КОМПОЗИЦИЯ ТОНЕРА

... 1. Тонер, содержащий смолу ядра, содержащую низкоплавкий воск или смесь низкоплавких восков, и смолу оболочки, в котором низкоплавкий воск имеет температуру плавления менее чем около 95°С и, необязательно, Tсмолы ядра ниже чем Tсмолы оболочки.2. Тонер по п.1, отличающийся тем, что тонер имеет показатель текучести расплава (MFI) по меньшей мере около 18 г/10 мин при температуре около 125°С и нагрузке 5 кг.3. Тонер по п.1, отличающийся тем, что Tсмолы оболочки меньше чем около 60°С.4. Тонер по п.1, отличающийся тем, что Tсмолы ядра по меньшей мере на 1°С меньше Tсмолы оболочки.5. Тонер по п.1, отличающийся тем, что Tсмолы ядра меньше чем около 60°С.6. Тонер по п.1, отличающийся тем, что смолу оболочки выбирают из группы, состоящей из стирол-акрилатов, стирол-бутадиенов, стирол-метакрилатов и их комбинаций.7. Тонер по п.1, отличающийся тем, что тонер дополнительно содержит красящее вещество.8. Тонер по п.1, отличающийся тем, что тонер является тонером, полученным агрегацией эмульсии.9. Тонер ...

ЗАЩИТНЫЙ ТОНЕР И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

PRESSURE FIXABLE MAGNETIC TONERS

... 1431699 Electrostatic toner XEROX CORP 4 April 1973 [10 April 1972] 16092/73 Heading G2H An electrostatic toner which can be pressure fixed without heat, and magnetically applied without the use of carrier particles, is made up of particles each of which has a pressure-rupturable polymeric shell with an adhesive polymer and particles of a magnetically-attractable substance inside. In use, fixing may be by pressure alone, or by a combination of heat and pressure. Lists of polymeric materials which can be used and methods of preparation are given. The magnetically attractable particles may be metallic and contain Co, Fe, Ni, Al, Cu, Pb, Mg, Sn, Zn, Au, Ag, Sb, Be, Bi, Cd, Ca, Mn, Se, Ti, W, V or Z as elements or alloys, or may be of oxides of Al, Fe, Ni, Zn, Z, Ti or Mg, of nitrides of V or Cr, of carbides of W or Si or of ferromagnetic ferrites. A pigment, which may be carbon black, and/or a dye colourant, may also be present.

TONER COMPOSITIONS AND PROCESSES

Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.

HYBRID EMULSION AGGREGATE TONER

Emulsion aggregate toner compositions that use two different emulsion aggregation (EA) technologies are described. Namely, there is provided an emulsion aggregation toner that comprises a base resin composed of both styrene-acrylate and polyester resins. Such hybrid emulsion aggregation toner compositions are lower in cost but still maintain desirable developer properties like low minimum fusing temperature (MFT) and lower dielectric loss.

전자사진용 토너 및 그의 제조방법

전자사진용 토너 및 그의 제조방법이 제공되며, 상기 토너는 중량평균분자량이 서로 상이한 2종의 수지를 포함하는 바인더, 착색제 및 이형제를 포함한다.

Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus

Provided is a toner for electrostatic charge image developing, comprising a core layer which contains a first binder resin and a coloring agent, and a shell layer which contains a second binder resin and covers the core layer, characterized in that the following equation (1) and the following equation (2) are satisfied, - Equation (1) 2.0x105 G'(60) 4.0x106 - Equation (2) 10 G'(60)/G'(80) 40 wherein, in the equation (1) and the equation (2), G'(60) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 60 DEG C, a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%, and G'(80) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 80 DEG C, a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%. Also provided is a developer for electrostatic charge image developing ...

TONER AND TWO-COMPONENT DEVELOPER

There are provided a toner and a two-component developer effective to make exudation of a release agent easy during fixing and to prevent occurrence of high-temperature offset, in which both the preservation stability and the fixing property are improved at the same time. The capsule toner comprises a toner base particle and a resin layer formed of fine resin particles with which a surface of the toner base particle is coated. In the capsule toner, both of the following expressions are satisfied: A Подробнее

Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus

Provided is a toner for electrostatic charge image developing, comprising a core layer which contains a first binder resin and a coloring agent, and a shell layer which contains a second binder resin and covers the core layer, characterized in that the following equation (1) and the following equation (2) are satisfied, 2.0x10⁵<=G'(60)<=4.0x10⁶ Equation (1) 10<=G'(60)/G'(80)<=40 Equation (2) wherein, in the equation (1) and the equation (2), G'(60) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 60° C., a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%, and G'(80) represents a storage elastic modulus ...

TONER

A toner includes a plurality of toner particles each including a core and a shell layer entirely covering a surface of the core. The core contains a foamable polymer having a foamable group that is foamable through heating. A first foaming amount is at least 7 mL. The first foaming amount is an amount of gas collected over water during a period from when heating of the toner up to 120° C. is started at 30° C. to when a temperature of the toner has been kept at 120° C. for 30 minutes after the heating. A second foaming amount is at least 6 mL. The second foaming amount is an amount of gas collected over water during a period from when the heating is started at 30° C. to when the temperature of the toner reaches 0° C. through cooling after the liquid has been kept at 120° C. for 30 minutes.

CAPSULE TONER AND ITS PRODUCTION

PURPOSE: To hole securely pulverous inorg. particles and to provide stably the effect thereof over a long period of time by coating a shell material resin on the core material particles stuck with the pulverrous inorg. particles of a fluidity imparting agent, etc. by mixing for external addition. CONSTITUTION: A soft solid material having excellent fixability, for example, wax is used as the core material and various dyes and pigments are incorporated as a coloring agent therein. Such component is subjected to, for example, melting and kneading, then pelletizing by a spray dryer, etc. and further classifying if necessary, by which the pulverous particles are obtd. The pulverous inorg. powder such as, for example, alumina, is externally added and mixed to and with the resultant core material particles at preferably 40W50°C by using a powder mixing or pulverizing machine. The core material particles stuck with the resultant pulverous paticles are coated with the shell material resin, for ...

ТОНЕРНЫЕ КОМПОЗИЦИИ И СПОСОБЫ

Herstellungsverfahren eines elektrophotographischen Toners

POROUS PARTICLES WITH NOT POROUS BOWL

SECURITY TONER AND PROCESS OF USING THEREOF

The present disclosure relates to toner compositions containing an IR-taggant, and method of making thereof. The disclosure also relates to method for confirming authenticity of an item.

Toner and two-component developer

PRESSURE FIXABLE ELECTROSTATAGRAPHIC TONER

TONER

Upgrading is attained in the development, transfer and fixation of toner. The toner is one having toner particles containing at least a binder resin, a wax and a colorant, characterized in that the glass transition temperature (TgA), as measured by a differential scanning calorimeter, of the toner is in the range of 40 ° to 60°C, and that the maximum peak temperature (P1), as measured by a differential scanning calorimeter, of the toner is in the range of 70° to 120°C, and that the glass transition temperature (TgB), as measured by a differential scanning calorimeter, of cyclohexane (CHX) insolubles among tetrahydrofuran (THF) solubles of the toner is in the range of 80° to 120°C, and that the above TgA and TgB satisfy a specified formula, and that the viscosity at 100°C, as measured by a flow tester temperature raising method, of the toner is in the range of 5000 to 30,000 Pa.s, and that the acid value of the cyclohexane (CHX) insolubles is in the range of 5 to 40 mgKOH/g. COPYRIGHT KIPO ...

Toner composition

A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same.

CAPSULATED TONER

PURPOSE: To improve the fixability and anti-offsetting power by forming a capsule around a core substance contg. a display recording material, a polymer, a specified org. liq. and a high b.p. solvent so that the org. liq. forms a continuous phase in the core substance. CONSTITUTION: A core substance is composed essentially of a display recording material, a polymer, an org. liq. having ≥120°C b.p. and causing no dissolution or swelling of the polymer, and a high b.p. solvent incompatible with the org. liq., capable of dissolving or swelling the polymer, and having ≥150°C b.p. which is higher than the b.p. of the org. liq. so that the org. liq. forms a continuous phase in the core substance. A capsule is formed around the core substance. The core substance contains magnetic particles. Paraffin or naphthene hydrocarbon is used as the org. liq., dimethyl or diethyl ester of dicarboxylic as the high b.p. solvent, and a (meth)acrylate polymer as the polymer. The capsule is made of urea resin ...

PRODUCTION OF TONER OR CAPSULED TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE

PURPOSE: To stabilize the developing performance and fixability of a toner or capsuled toner by heating a mixture of a binder contg. a specified compound with a colorant and by stirring the mixture in the presence of solid media so as to form the toner or capsuled toner. CONSTITUTION: A mixture of 100pts.wt. binder contg. a compound having a long chain of aliphatic hydrocarbon and ≤30cps melt viscosity at 100°C with 1W200pts.wt. colorant is heated. In order to dissociate an aggregate of the colorant in the mixture, the mixture is stirred in the presence of solid media. Toner particles are formed from the resulting uniform mixture. Solid core particles may be formed from the uniform mixture and capsuled. The compound having a long chain of aliphatic hydrocarbon and 1W30cps melt viscosity at 100°C may be 12W50C hydrocarbon, fatty acid or fatty acid ester. The developing performance and fixability of the toner or capsuled toner are stabilized. COPYRIGHT: (C)1987,JPO&Japio ...

MAGNETIC CAPSULE TONER

PURPOSE: To permit fixing with light pressurizing force, simplification of a fixing device and inexpensive formation of a titled toner by incorporating a nuclear material consisting of the pulverized powder of a mixture composed of magnetic powder, electric charge controlling agent, pigments, etc., and a gelling material into a capsule shell contg. the charge controlling agent. CONSTITUTION: The nuclear material consisting of the mixture composed of the magnetic powder, charge controlling agent, pigments, etc., and the gelling material is incorporated into the capsule shell contg. the charge controlling agent. Iron oxide, iron carbonyl, ferromagnetic alloy, etc., (preferably 0.1W1μ grain size) are used as the magnetic material particles constituting the nuclear material. Metal-contg. dyes, nigrosine, etc., are used for the charge controlling agent and inorg. pigments such as carbon black and titanium oxide and org. pigments such as copper phthalocyanine and quinacrine deriv. are used for ...

ПРОЯВЛЯЮЩИЙ СКРЫТОЕ ЭЛЕКТРОСТАТИЧЕСКОЕ ИЗОБРАЖЕНИЕ ТОНЕР

... 1. Тонер, содержащий:частицу ядра, содержащую по меньшей мере связующую смолу, красящее вещество и смазочное средство; иоболочку на поверхности частицы ядра,при этом тонер дает надосадочную жидкость, имеющую коэффициент пропускания от 50% до 95% в отношении света с длиной волны 800 нм, причем надосадочная жидкость образуется после того, как 3 г тонера добавляют к 40 г умягченной ионным обменом воды, содержащей 0,5 массовых % додецилсульфата натрия, с последующими перемешиванием в течение 90 мин и облучением ультразвуковыми волнами с 20 кГц и 80 Вт в течение 5 мин, и жидкость, содержащую диспергированный в ней тонер, центрифугируют при 3000 об/мин в течение 5 мин.2. Тонер по п. 1, при этом оболочка содержит выступы и образована тонкодисперсными частицами смолы, присоединенными к поверхности частицы ядра.3. Тонер по п. 2, при этом тонер получен способом, включающим: растворение или диспергирование в органическом растворителе связующей смолы, красящего вещества и смазочного средства, чтобы ...

Super low melt toners

TONER COMPOSITIONS AND PROCESSES

Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.

TONER COMPOSITION

A toner is described containing low melt wax and having a core and shell, which toner exhibits improved fusing performance as compared to a toner produced with a high melt wax in the core; having a core resin with a T g equal to or lower than that of the shell resin; or both.

LATENT ELECTROSTATIC IMAGE DEVELOPING TONER

POLYMERIZATION-PROCESS TONER AND PROCESS FOR THE PRODUCTION THEREOF

A polymerization-process toner of a core-shell structure composed of colorant-containing polymer particles covered with polymer layers, which is characterized in that: (a) the gel content is 60 to 95 % as determined by the tetrahydrofuran extraction method, (b) the melt index is 0.5 to 15 g/10 min as determined at 150 °C under a load of 2.16 kg, and (c) the sphericity as represented in terms of average ratio of long radius (rl) to short radius (rs) (i.e., rl/rs ratio) is 1.0 to 1.2; and a process for the production thereof.

Toner for developing static image and an image forming method

A toner for developing a static image comprising at least a resin, colorant and crystalline substance is disclosed. The toner particle has a domain-matrix structure and the domain has an average of the ratio of the major axis to the minor axis of from 1.5 to 2.5 when the domain is approximated by an ellipse.

Electrostatic image developing

An electrostatic image developing toner is disclosed. The resin of the toner particle has a cell structure and an average value of FERE-horizontal diameters of the cells is from 20 to 200 nm and a coefficient of the FERE-horizontal diameters of the cells is from 10 to 35%.

Electrostatic image developing toner and image forming method

An electrostatic image developing toner is disclosed, comprising toner particles composed of a core containing resin and a colorant and a shell containing a resin, wherein the standard deviation of shape factor SF-1 of the toner particles and the standard deviation of shape factor SF-2 fall within the specific range, and the ratio of maximum thickness of the shell to minimum thickness falls within the specific range.

ТОНЕРНЫЕ КОМПОЗИЦИИ И СПОСОБЫ

FIELD: physics. SUBSTANCE: present invention generally relates to toner compositions and methods and more specifically to economical toners consisting of one amorphous polyester resin, crystalline polyester, dye, optional wax and optional additives, and said amorphous polyester resin is obtained by catalytic polymerisation of monomers, for example carboxylic acid, dicarboxylic acid, benzene tricarboxylic acid, at least one bisphenol and a component selected from a group consisting of at least one of dodecyl succinic anhydride and dodecyl succinic acid, and wherein said amorphous polyester resin contains less than about 16 wt. % dodecyl succinic anhydride. Disclosed toner composition consists of a core of a first amorphous polyester resin, a second crystalline polyester, a wax and a coloring agent, and at least one shell surrounding said core, which consists of said first amorphous polyester resin and wax, wherein said first amorphous polyester resin is obtained by polycondensation of organic diol, an organic dibasic acid, a polycondensation catalyst and dodecyl succinic anhydride present in an amount of about 9.5 to about 12.8 wt. %, or dodecyl succinic acid present in an amount of about 9.5 to about 12.8 wt. %, whereby terpoli(propoxylated bisphenol A co-dodecylsuccinate)-terpoly(propoxylated bisphenol A co-terephthalate)-terpoly-(propoxylated bisphenol A co-dodecylsuccinate) are obtained, terpoly-(propoxylated bisphenol A terephthalate)-terpoly-(propoxylated bisphenol A-dodecenylsuccinate)-terpoly-(propoxylated bisphenol A fumarate)-(propoxylated bisphenol A-trimellitat), or terpoli (propoxylated bisphenol A-terephthalate)-terpoly(propoxylated bisphenol A-dodecenylsuccinate)-terpoly (propoxylated bisphenol A fumarate), and wherein said crystalline polyester resin is selected from a group consisting of poly(1,6-hexylene-1,12-dodecanoate), poly(1,9-nonylene-succinate) and poly(1,6-hexylene-succinate). EFFECT: technical result consists in providing toners with ...

ELEKTROSTATOGRAPHISCHES, MAGNETISCHES TONERMATERIAL

PRESSURE FIXABLE MAGNETIC TONERS

toner de agregado de emulsão híbrido

Electrophotographic toner and method for producing the same, electrophotographic developer and image forming method

ТОНЕРЫ СО СВЕРХНИЗКОЙ ТЕМПЕРАТУРОЙ ПЛАВЛЕНИЯ

... 1. Тонер, содержащий ядро, которое содержит:по меньшей мере, одну аморфную смолу,по меньшей мере, одно гелеобразующее вещество, инеобязательно, один или более ингредиентов, выбранных из группы, состоящей из аморфных смол, восков, коагулянтов, пигментов и их комбинаций.2. Тонер по п.1, в котором, по меньшей мере, одна аморфная смола представляет собой смолу на биологическом сырье.3. Тонер по п.1, в котором, по меньшей мере, одно гелеобразующее вещество получают из компонента, выбранного из группы, состоящей из амидов, эпокси и их комбинаций.4. Тонер по п.1, в котором, по меньшей мере, одно гелеобразующее вещество содержит амид.5. Тонер по п.1, в котором, по меньшей мере, одно гелеобразующее вещество содержит эпоксигруппу.6. Тонер по п.1, где тонер имеет минимальную температуру термического закрепления от около 100°С до около 130°С.7. Тонер, полученный агрегацией эмульсии, содержащий ядро, которое содержит:по меньшей мере, одну аморфную смолу,по меньшей мере, одно гелеобразующее вещество, ...

ENCAPSULATED TONER FOR DEVELOPMENT OF ELECTRO-STATIC IMAGES AND PROCESS FOR PRODUCING THE SAME

LATENT ELECTROSTATIC IMAGE DEVELOPING TONER

A toner including: a core particle containing at least a binder resin, a colorant and a releasing agent; and a shell on a surface of the core particle, wherein the toner gives a supernatant having a transmittance of 50% to 95% with respect to light having a wavelength of 800 nm, where the supernatant is formed after 3 g of the toner is added to 40 g of ion-exchange water containing 0.5% by mass of sodium dodecyl sulfate, followed by stirring for 90 min and by irradiating with ultrasonic waves of 20 kHz and 80 W for 5 min, and a liquid containing the toner dispersed therein is centrifugated at 3,000 rpm for 5 min.

Toner and process for production thereof

Disclosed is a toner obtained by coating surfaces of core particles including at least a binder resin having a carboxyl group and a coloring agent with successive coatings of a water-soluble crosslinking agent capable of crosslinking with a carboxyl group and a water-soluble polymer having a carboxyl group, which have been successively applied on the core particles and crosslinked with each other. The thus-formed toner is provided with a good harmony of favorable fixability represented by a low lowest fixable temperature and favorable storage stability represented by little aggregation after standing at 50°C for 8 hours.

ТОНЕРЫ СО СВЕРХНИЗКОЙ ТЕМПЕРАТУРОЙ ПЛАВЛЕНИЯ

FIELD: printing industry. SUBSTANCE: invention relates to novel toners. The toner comprises a core particle with low viscosity with encapsulated pigment, comprising at least one amorphous resin based on the biological raw material and at least one gelling agent, where at least one gelling agent comprises a gelling agent having the structural formula (1), as in the invention formula, where the toner comprises optionally one or more ingredients selected from the group consisting of amorphous resins, waxes, coagulants, pigments, and their combinations, and where the said at least one gelling agent is used instead of crystalline resin in the particle core. The variant of toner and a core particle with low viscosity are claimed. EFFECT: use in formation of EA-toners with ultra-low melting point, the toner provides good gloss. 18 cl, 4 ex

ПРОЯВЛЯЮЩИЙ СКРЫТОЕ ЭЛЕКТРОСТАТИЧЕСКОЕ ИЗОБРАЖЕНИЕ ТОНЕР

Настоящее изобретение относится к: проявляющему скрытое электростатическое изображение тонеру для проявления скрытого электростатического изображения, сформированного электрофотографическим способом, способом электростатической записи и способом электростатической печати; и способу формирования изображения, устройству формирования изображения и технологическому картриджу, в каждом из которых используется этот проявляющий скрытое электростатическое изображение тонер.Заявленный тонер включает в себя: частицу ядра, содержащую по меньшей мере связующую смолу, красящее вещество и смазочное средство; и оболочку на поверхности частицы ядра, при этом тонер дает надосадочную жидкость, имеющую коэффициент пропускания от 50% до 95% в отношении света с длиной волны 800 нм, причем надосадочная жидкость образуется после того, как 3 г тонера добавляют к 40 г умягченной ионным обменом воды, содержащей 0,5 массовых % додецилсульфата натрия, с последующими перемешиванием в течение 90 мин и облучением ультразвуковыми ...

ЗАЩИТНЫЙ ТОНЕР И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Изобретение может быть использовано для обеспечения защиты документов от подделки. Тонер, полученный способом агрегации эмульсии, имеет частицы, содержащие ядро и оболочку, при этом ядро содержит ИК маркер, кристаллическую полиэфирную смолу и аморфную полиэфирную смолу. ИК маркер выбирают из группы, состоящей из неорганической керамической наночастицы, ИК-излучающего органического красителя, ИК-излучающей квантовой точки. ИК маркер имеет максимум излучения в диапазоне длин волн от 1000 до 1200 нм. Предложены также способ получения тонера и способ для удостоверения подлинности предмета. Изобретения позволяют повысить уровень защиты документов. 3 н. и 15 з.п. ф-лы, 5 табл., 2 пр., 1 ил.

Latent electrostatic image developing toner

A toner including: a core particle containing at least a binder resin, a colorant and a releasing agent; and a shell on a surface of the core particle, wherein the toner gives a supernatant having a transmittance of 50% to 95% with respect to light having a wavelength of 800 nm, where the supernatant is formed after 3 g of the toner is added to 40 g of ion-exchange water containing 0.5% by mass of sodium dodecyl sulfate, followed by stirring for 90 min and by irradiating with ultrasonic waves of 20 kHz and 80 W for 5 min, and a liquid containing the toner dispersed therein is centrifugated at 3,000 rpm for 5 min.

TONER COMPOSITION

A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same.

PRESSURE FIXABLE MAGNETIC TONERS

TONER COMPOSITION

A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature, and processes for producing the same.

CORE-SHELL POLYMER NANOPARTICLES AND METHOD FOR MAKING EMULSION AGGREGATION PARTICLES USING SAME

The method of making nano-sized particles for use in making emulsion aggregation toner particles, the nano-sized particles having a core portion and a shell portion, wherein the core portion of the nano-sized particles includes crystalline resin and the shell portion includes amorphous resin and is substantially to completely free of the crystalline resin.

Image forming apparatus and image forming method

An object of the present invention is intended to provide an image forming apparatus and an image forming method through which an effect of granting flavor to a printing object is excellent. In accordance with an embodiment, an image forming apparatus comprises a developing device and a fixing device. A toner is housed in the developing device. The fixing device includes a fixing roller and a pressure roller. The toner contains binder resin and a microcapsule in which perfume is encapsulated. A glass transition temperature of the toner is below 60 degrees centigrade. A nip part is formed by the fixing roller and the pressure roller. A pressure applied to an image receiving medium passing through the nip part is below 0.19 N/mm2.

Image forming apparatus and image forming method

An image forming apparatus and an image forming method through which an effect of granting flavor to a printing object is excellent. In accordance with an embodiment, an image forming apparatus comprises a developing device and a fixing device. A toner is housed in the developing device. The fixing device includes a fixing roller and a pressure roller. The toner contains binder resin and a microcapsule in which perfume is encapsulated. A glass transition temperature of the toner is below 60 degrees centigrade. A nip part is formed by the fixing roller and the pressure roller. A pressure applied to an image receiving medium passing through the nip part is below 0.19 N/mm2.

Toner

A toner includes toner particles. The toner particles each include a core, a shell layer, and an external additive. The core contains a first thermoplastic resin as a binder resin. The shell layer partially covers a surface of the core. The external additive is attached to regions of the surface of the core that are not covered with the shell layer. The external additive includes external additive particles. The external additive particles protrude outward in radial directions of the core further than a surface of the shell layer. At least part of surfaces of the external additive particles is exposed from the shell layer. The shell layer contains a second thermoplastic resin or a thermosetting resin. The second thermoplastic resin has a higher softening point than the core. The shell layer has a thickness of at least 5 nm.

ENCAPSULATED TONER

An encapsulated toner for development of electrical latent images comprises a core particle containing a colorant and a soft solid material, inorganic fine particles attached to the vicinity of the surface of the core particle, and a shell coating the core particle and the inorganic fine particles. The inorganic fine particles function to, e.g., reinforce the encapsulated toner with a thin shell and may be attached to the core particles through dry-mixing. The core particles with the attached inorganic particles may be coated with a shell resin through phase separation.

SUPER LOW MELT TONERS

Environmentally friendly latex particles are provided which include a gelling agent and a pigment encapsulated in an amorphous resin which may be utilized in forming EA super low melt toners. Methods for providing these resins and toners are also provided.

Toner and process for production thereof

POUDRE PIGMENTAIRE ENROBEE POUR LE DEVELOPPEMENT D'IMAGES ELECTROSTATIQUES ET SON PROCEDE DE PRODUCTION

L'INVENTION CONCERNE UNE POUDRE PIGMENTAIRE ENROBEE POUR LE DEVELOPPEMENT D'IMAGES LATENTES ELECTROSTATIQUES. CHAQUE MICROCAPSULE DE POUDRE COMPREND UNE PARTICULE 1 DE NOYAU CONTENANT UN COLORANT ET UNE MATIERE SOLIDE TENDRE, DE FINES PARTICULES INORGANIQUES 2 ATTACHEES A PROXIMITE DE LA SURFACE DE LA PARTICULE DE NOYAU, ET UNE COQUE 3 RECOUVRANT LA PARTICULE DE NOYAU ET LES FINES PARTICULES INORGANIQUES. CES DERNIERES ONT POUR FONCTION, PAR EXEMPLE, DE CONSOLIDER LES PARTICULES DE POUDRE A L'AIDE D'UNE MINCE COQUE ET ELLES PEUVENT ETRE FIXEES AUX PARTICULES DE NOYAUX PAR MELANGE A SEC. LES PARTICULES DE NOYAUX, SUR LESQUELLES LES FINES PARTICULES INORGANIQUES SONT FIXEES, PEUVENT ETRE RECOUVERTES D'UNE RESINE FORMANT COQUE, PAR UN PROCEDE DE SEPARATION DE PHASES. DOMAINE D'APPLICATION: COPIEURS.

TONER, DEVELOPER, AND IMAGE FORMING METHOD

A toner containing at least a binder resin and a colorant, wherein the toner has a core-shell structure composed of a core, and a shell having a thickness of 0.01 mum to 2 mum on a surface of the core, and wherein the toner satisfies the following relation: 1.1<=ST/CT<=2.0 where ST is a softening temperature of the shell, and CT is a softening temperature of the core, both measured by a SPM probe with an integrated heater.

Toner, development agent, and image formation method

A toner including a mother toner particle having a core-shell structure formed of a core containing a binder resin, a coloring agent, and an optional releasing agent, and a shell having a layer thickness of from 0.01 to 2.00 m, the core having a softening index of from 60 to 85° C. as measured by a flow tester, and the shell having a thermal hardness of from 0.7 to 1.8 m, and an optional external additive.

Toner and two-component developer

There are provided a toner and a two-component developer effective to make exudation of a release agent easy during fixing and to prevent occurrence of high-temperature offset, in which both the preservation stability and the fixing property are improved at the same time. The capsule toner comprises a toner base particle and a resin layer formed of fine resin particles with which a surface of the toner base particle is coated. In the capsule toner, both of the following expressions are satisfied: A Подробнее

TONER AND PROCESS FOR PRODUCTION THEREOF

Disclosed is a toner obtained by coating surfaces of core particles including at least a binder resin having a carboxyl group and a coloring agent with successive coatings of a water-soluble crosslinking agent capable of crosslinking with a carboxyl group and a water-soluble polymer having a carboxyl group, which have been successively applied on the core particles and crosslinked with each other. The thus-formed toner is provided with a good harmony of favorable fixability represented by a low lowest fixable temperature and favorable storage stability represented by little aggregation after standing at 50° C. for 8 hours.

Method for making emulsion aggregation particles using core-shell polymer nanoparticles

RESIN PARTICLE AND TONER

A resin particle contains a core containing a first binder resin containing an alcohol component and a shell containing a second binder resin containing at least one of polyethylene terephthalate and polybutylene terephthalate, wherein the first binder resin contains a plant-derived alcohol monomer accounting for 5 to 35 percent by mass of the entire of the alcohol component and the at least one of polyethylene terephthalate and polybutylene terephthalate accounts for 10 to 70 percent by mass of the entire of the second binder resin.

MICROENCAPSULATED TONER

PURPOSE: To enhance fixing effect of a toner and to make a picture image distinct by incorporating specified three kinds of compd. into a core material in a specified proportion, and specifying also proportion by weight of the core material to an external shell. CONSTITUTION: A mixture of (A) a nonpolar hydrocarbon compd. having ≤0°C m.p. ≥80°C b.p., (B) a nonpolar hydrocarbon compd. having 60-75°C m.p., and (C) a hydrocarbon compd. having 77-120°C m.p., ≤5 penetration degree, and ≤30csi melt viscosity at 100°C in 20-50/40-25/40-25 proportion is used as a core material for the title toner. Further, the weight ratio of the core material to the shell material is regulated to 70/30-95/5. n-Nonane is useable for the component A, 30-40C n-paraffin is useable for the component B, and polyethylene wax having a low mol.wt. is useable for the component C. COPYRIGHT: (C)1989,JPO&Japio ...

ENCAPSULATED TONER

PIGMENT POWDER COATED FOR DEVELOPING ELECTROSTATIC IMAGES AND METHOD FOR PRODUCTION THEREOF

Toner and process for production thereof

Disclosed is a toner obtained by coating surfaces of core particles including at least a binder resin having a carboxyl group and a coloring agent with successive coatings of a water-soluble crosslinking agent capable of crosslinking with a carboxyl group and a water-soluble polymer having a carboxyl group, which have been successively applied on the core particles and crosslinked with each other. The thus-formed toner is provided with a good harmony of favorable fixability represented by a low lowest fixable temperature and favorable storage stability represented by little aggregation after standing at 50° C. for 8 hours.

Methode und Vorrichtung zur Farbbildformung mittels eines Mikrokapsel-Toner

PRESSURE FIXABLE TONER

PRESSURE FIXABLE TONER

SUPER LOW MELT TONERS

Environmentally friendly latex particles are provided which include a gelling agent and a pigment encapsulated in an amorphous resin which may be utilized in forming EA super low melt toners. Methods for providing these resins and toners are also provided.

HYBRID EMULSION AGGREGATE TONER

Emulsion aggregate toner compositions that use two different emulsion aggregation (EA) technologies are described. Namely, there is provided an emulsion aggregation toner that comprises a base resin composed of both styrene-acrylate and polyester resins. Such hybrid emulsion aggregation toner compositions are lower in cost but still maintain desirable developer properties like low minimum fusing temperature (MFT) and lower dielectric loss.

Developing apparatus using non-magnetic mono-component toner and method of adding toner to same

POROUS PARTICLES WITH NON-POROUS SHELL

The present invention is core-shell polymer particles comprising a common binder polymer for the core and the shell wherein the core has a porosity and the shell is non-porous The particles have a porosity from 10 to 70 percent.

Dispersionsflüssigkeit von vernetzten Harzteilchen

Eine Dispersion vernetzter Harzteilchen mit einer volumengemittelten Teilchengröße (D50) von 0,05 bis 0,7 μm, wobei die Dispersion durch ein Verfahren hergestellt ist, welches die Schritte umfasst: (A) Neutralisieren eines Harzes, welches einen einen Säurerest enthaltenden Polyester enthält, in einem wässrigen Medium, um eine Dispersion von Harzteilchen zu erhalten; und (B) Mischen der in Schritt (A) erhaltenen Dispersion von Harzteilchen mit einem einen Oxazolinrest enthaltenden Polymer bei einer Temperatur von 60 bis 100°C.

Super low melt toners

TONER COMPOSITION

A toner is described containing low melt wax and having a core and shell, which toner exhibits improved fusing performance as compared to a toner produced with a high melt wax in the core; having a core resin with a T g equal to or lower than that of the shell resin; or both.

CORE-SHELL POLYMER NANOPARTICLES AND METHOD FOR MAKING EMULSION AGGREGATION PARTICLES USING SAME

The method of making nano-sized particles for use in making emulsion aggregation toner particles, the nano-sized particles having a core portion and a shell portion, wherein the core portion of the nano-sized particles includes crystalline resin and the shell portion includes amorphous resin and is substantially to completely free of the crystalline resin.

LATENT ELECTROSTATIC IMAGE DEVELOPING TONER

A toner including: a core particle containing at least a binder resin, a colorant and a releasing agent; and a shell on a surface of the core particle, wherein the toner gives a supernatant having a transmittance of 50% to 95% with respect to light having a wavelength of 800 nm, where the supernatant is formed after 3 g of the toner is added to 40 g of ion-exchange water containing 0.5% by mass of sodium dodecyl sulfate, followed by stirring for 90 min and by irradiating with ultrasonic waves of 20 kHz and 80 W for 5 min, and a liquid containing the toner dispersed therein is centrifugated at 3,000 rpm for 5 min.

Toner, two-component developer, and image forming method

The invention relates to a toner, a two-component developer and an image forming method. The toner including a mother particle and an external additive is provided. The mother particle includes a core including a crystalline polyester, an amorphous polyester, a colorant, and a release agent; and a shell including resin particles. A deformation amount H1 of the toner compressed by a pressure of 0.5 mN under a temperature of 25 DEG C. is between 0.2 and 1.5 [mu]m. A difference D between the deformation amount H1 and a deformation amount H2 of the toner compressed by a pressure of 0.5 mN under a temperature of 50 DEG C. is between 0.0 and 1.0 [mu]m. A surface roughness Ra of the toner melted at 90 DEG C. is between 0.02 and 0.40 [mu]m.

PIGMENTARY POWDER ENROBEE FOR the DEVELOPMENT Of ELECTROSTATIC IMAGES AND ITS PROCESS OF PRODUCTION

L'INVENTION CONCERNE UNE POUDRE PIGMENTAIRE ENROBEE POUR LE DEVELOPPEMENT D'IMAGES LATENTES ELECTROSTATIQUES. CHAQUE MICROCAPSULE DE POUDRE COMPREND UNE PARTICULE 1 DE NOYAU CONTENANT UN COLORANT ET UNE MATIERE SOLIDE TENDRE, DE FINES PARTICULES INORGANIQUES 2 ATTACHEES A PROXIMITE DE LA SURFACE DE LA PARTICULE DE NOYAU, ET UNE COQUE 3 RECOUVRANT LA PARTICULE DE NOYAU ET LES FINES PARTICULES INORGANIQUES. CES DERNIERES ONT POUR FONCTION, PAR EXEMPLE, DE CONSOLIDER LES PARTICULES DE POUDRE A L'AIDE D'UNE MINCE COQUE ET ELLES PEUVENT ETRE FIXEES AUX PARTICULES DE NOYAUX PAR MELANGE A SEC. LES PARTICULES DE NOYAUX, SUR LESQUELLES LES FINES PARTICULES INORGANIQUES SONT FIXEES, PEUVENT ETRE RECOUVERTES D'UNE RESINE FORMANT COQUE, PAR UN PROCEDE DE SEPARATION DE PHASES. DOMAINE D'APPLICATION: COPIEURS. THE INVENTION CONCERNS A COATED PIGMENT POWDER FOR THE DEVELOPMENT OF LATENT ELECTROSTATIC IMAGES. EACH MICROCAPSULE OF POWDER CONSISTS OF A CORE PARTICLE 1 CONTAINING A COLOR AND A SOFT SOLID MATERIAL, FINE INORGANIC PARTICLES 2 ATTACHED NEAR THE SURFACE OF THE CORE PARTICLE, AND A SHELL 3 COVERING THE PARTICULATE PARTICULATE AND THE PARTICULATE PARTICULATE . THE LATTER'S FUNCTION, FOR EXAMPLE, TO CONSOLIDATE THE POWDER PARTICLES USING A THIN SHELL AND THEY CAN BE FIXED TO THE CORE PARTICLES BY DRY-MIXING. THE PARTICLES OF CORES, ON WHICH THE FINE INORGANIC PARTICLES ARE FIXED, CAN BE COVERED WITH A RESIN FORMING A SHELL, BY A PHASE SEPARATION PROCESS. FIELD OF APPLICATION: COPIERS.

Method for preparing toner and toner prepared by using the method

TONER

결착 수지, 착색제 및 왁스를 함유하는 코어에, 수지A를 함유하는 쉘상을 형성한 코어 쉘 구조의 토너 입자를 갖는 토너이며, 수지A의 시차 주사 열량계(DSC)에 의한 측정에 있어서, 1회째의 승온에서의 최대 흡열 피크의 피크 온도(TpA(℃))가 55℃ 이상, 80℃ 이하이고, 수지A의 점탄성 측정에 있어서, TpA-10(℃)에 있어서의 손실 탄성률이 1×10 7 Pa 이상, 1×10 8 Pa 이하이고, 수지A의 점탄성 측정에 있어서, TpA(℃), TpA+10(℃), TpA+25(℃)에 있어서의 손실 탄성률이 특정한 관계를 만족하는 것을 특징으로 하는 토너. Shell structure in which a shell phase containing a resin A is formed on a core containing a binder resin, a coloring agent, and wax, wherein in the measurement by the differential scanning calorimeter (DSC) of the resin A, and the peak temperature of the maximum endothermic peak in the temperature rise (TpA (℃)) is above 55 ℃, less than 80 ℃, in viscoelasticity measurement of the resin a, TpA-10 loss modulus is 1 × 10 7 Pa in the (℃) above, characterized in that it satisfies the loss of a particular relationship elastic modulus at 1 × 10 8, and Pa or less, in a viscoelasticity measurement of the resin a, TpA (℃), TpA + 10 (℃), TpA + 25 (℃) Toner.

TONER AND METHOD OF PREPARING THE SAME

The present invention provides a toner and a method of preparing the same. Wherein the toner has a honeycomb core-shell structure and has at least two core layers. Each core layer is fully covered with a shell layer.

SUPER LOW MELT TONERS

Environmentally friendly latex particles are provided which include a gelling agent and a pigment encapsulated in an amorphous resin which may be utilized in forming EA super low melt toners. Methods for providing these resins and toners are also provided.

MICROENCAPSULATED TONER

PURPOSE: To enable electrostatic charge control and to eliminate fatigue deterioration by coating a core material with an outer shell chemically combined with a charge controlling group to obtain an encapsulated toner. CONSTITUTION: The core material contg. a fixing component is coated with the outer shell chemically combined with the charge controlling group. For example, the HORF, ClCO-R, R being alkyl, of the charge controller are reacted with the functional groups of the outer shell, such as -COOH, -OH, or -NH2, to chemically combine them, and a magnetic powder, a colorant, etc., are dispersed into a polyvinyl acetate resin, as the core material, and coated with the outer shell of a polyurethane resin, and xylenediamine is reacted with the resin of the outer shell to chemically combine them and form a microencapsulated toner. The use of the charge controlling group chemically combined with the outer shell permits the toner to be favorably controlled in charge, reduced in deterioration ...

Methode und Vorrichtung zur Farbbildformung mittels eines Microkapseltoners

HYBRID-EMULSIONSAGGREGATTONER

Toneradditive, um gedruckten Bildern bestimmte Eigenschaften zu verleihen. Insbesondere Toneradditive, die gewünschte abstimmbare Glanzintensitäten bereitstellen. Die vorliegenden Toneradditive umfassen Polyolefine. Der Einbau derartiger Additive in Toner, insbesondere Emulsionsaggregations-(EA)-Toner, liefert Glanzkontrolle ohne irgendeinen signifikanten negativen Einfluss auf die Mindestfixiereigenschaften des Toners.

Super low melt toners

Toners comprise aggregated latex particles having a core/shell structure in which the core comprises amorphous resin, colourant and gelling agent, and the shell comprises the same amorphous resin but is substantially free of gelling agent, the particles then being coalesced to form toner particles. The amorphous resin is preferably a polyester, polyamide, polyimide, polyisobutyrate, polyolefin or combination thereof, most preferably a diol/diacid polyester. Gelling agents may be compounds having a transition temperature at which the agent transitions reversibly between a low temperature gel material to a higher temperature liquid in the range of 100 to 130 oC. examples being an amide formed from a dimer or polymer fatty acid derived from palm oil, rapeseed oil, castor oil, oleic acid or linoleic acid and a diamine such as an alkylenediamine or poly(alkyleneoxy)diamine. The preferred gelling agent is: ...

Electrophotographic toner and process of preparing the same

An electrophotographic toner and a process for preparing the same. The electrophotographic toner includes a binder, a coloring agent, and a release agent. The binder includes two resins having different weight average molecular weights.

Image forming device and method therefor

The invention relates to an image forming device and method therefor solving the subject matter that, if the linear speed of the developing solution carrier for that of the latent image carrier is lowered in order to secure the development capacity, the line image is deteriorated and there occurs a troublesome matter such as the blanking at the halftone rear edge. Such image forming device of the present invention is provided with a two-component magnetic brush type developing apparatus in which the developing bias composed of the DC bias and the AC bias superposed thereon is applied to the developing apparatus, and the latent image formed on the latent image carrier is developed with the two-component developing solution including the magnetic toner and the magnetic carrier. In the image forming device, the magnetic substance including percentage of the magnetic toner is set to 5 wt % DIFFERENCE 35 wt %.

Herstellungsverfahren eines elektrophotographischen Toners

PRESSURE FIXABLE TONER

... 1406687 Electrostatic developer XEROX CORP 19 Dec 1972 [30 Dec 1971] 58568/72 Heading G2H An electrostatic toner comprises particles with cores of a material which is normally solid, but flows under pressure and acts as an adhesive, encased in rupturable shells. Pressure, or a combination of pressure and heat, is used to rupture the shells and cause fixing. Preferably the toner contains carbon black pigment, and is used with glass or coated steel carrier beads. Powdered silica may be incorporated in the developer. Numerous examples are given.

Electrophotographic toner and method of manufacturing same

An electrophotographic toner is made up of toner particles composed of irregularly-shaped core particles made chiefly of binder resin, and surface-modifying fine particles which are first dispersed over and attached to the surface of the core particles, and then affixed or formed into a film thereon. The BET specific surface area, based on N2 adsorption, of the toner particles is less than 0.64 times the BET specific surface area of the core particles and surface-modifying fine particles combined together. Further, this value is 1.07 times the BET specific surface area of hypothetical toner particles which are perfect spheres. Consequently, the toner is not prone to problems such as filming, toner scattering, and fogging which are caused by peeling, separation, etc. of the surface-modifying fine particles, nor to poor cleaning due to spherical toner particles. Further, since the toner is manufactured with a quantitative grasp of the state of modification of the surface of the core particles ...

Toner having improved fixing property and glossiness

Electrostatic latent image developing toner

An electrostatic latent image developing toner includes a plurality of toner particle each including a toner mother particle and silica particles attached to a surface of the toner mother particle. The toner mother particle includes a toner core and a shell layer. The shell layer includes a first domain substantially formed from a first resin and a second domain substantially formed from a second resin. Both the first resin and the silica particles have higher positive chargeability than the second resin. A shell coverage is at least 40% and no greater than 90%. The toner particles each have an average value of surface potentials measured using a scanning probe microscope of at least +50 mV and no greater than +350 mV and a standard deviation thereof of no greater than 120 mV.

Electrographic toner and method of manufacturing same

Method of preparing toner and toner prepared using the method

The present invention provides a method of manufacturing toner uses a simplified process, in which the use of a surfactant is reduced to minimize the amount of wastewater generated. The toner manufactured using the method, an image forming method using the toner, and an image forming apparatus employing the toner are also provided.

Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus

Toner particle, developer, and image forming method

A toner particle including a mother particle and an outer shell layer is provided. The mother particle includes a binder resin and a colorant. The outer shell layer is formed of a reaction product of a silicon compound chemically binding to a surface of the mother particle. The outer shell layer may be formed on either the whole surface or a part of the surface of the mother particle. The reaction product of the silicon compound may be a silica compound.

Toner Process

The present disclosure describes a toner produced using a coalescing temperature lower than the melting point of a wax in the toner, quench cooling or both. The resulting toners can exhibit reduced dielectric loss and improved tribo charging.

RESIN PARTICLES AND METHOD FOR PRODUCING SAME

Provided are resin particles which have excellent thermal bondability, excellent low-temperature fixability, excellent heat resistant storage stability and high bonding strength, and which provide a coating film that has high gloss and excellent water resistance. The resin particles are composed of resin particles (X), each of which has a shell layer (S) containing a crystalline polyurethane resin (B) on the surface of a core layer (Q) containing a crystalline resin (A). The maximum peak temperature (Ta) of the heat of fusion of the crystalline resin (A) is 40 to 70° C. and the maximum peak temperature (Tu) of the heat of fusion of the crystalline polyurethane resin (B) is 50 to 90° C. 114-. (canceled)15. A method for producing a resin particle (X) resulting from attachment of a resin particle (E) to the surface of a resin particle (G) containing a crystalline resin (A) , the resin particle (X) being obtained by following a step of dispersing a solution (D) prepared by dissolving the crystalline resin (A) in an organic solvent (C) in a dispersion medium (F) containing the resin particle (E) containing a crystalline polyurethane resin (B) , thereby obtaining a dispersion (DF) , and then removing the organic solvent (C) and the dispersion medium (F) from the dispersion (DF) , wherein the resin particle (X) is structured to have a shell layer (S) containing the crystalline polyurethane resin (B) on the surface of a core layer (Q) containing the crystalline resin (A) , the maximum peak temperature (Ta) of the heat of fusion of the crystalline resin (A) is 40 to 70° C. , and the maximum peak temperature (Tu) of the heat of fusion of the crystalline polyurethane resin (B) is 50 to 90° C.16. The method for producing a resin particle (X) according to claim 15 , wherein the crystalline resin (A) is obtained from its precursor (A0).17. The method for producing a resin particle (X) according to claim 16 , wherein the precursor (A0) is a combination of a prepolymer (α) having a ...

ELECTROSTATIC LATENT IMAGE DEVELOPING TONER AND EXTERNAL ADDITIVE

An electrostatic latent image developing toner includes a plurality of toner particles, The toner particles each include a toner mother particle and a plurality of external additive particles. The toner mother particle contains at least a hinder resin and a colorant. The external additive particles each include a first particle, a plurality of second particles disposed at a surface of the first particle, and the coat layer coating the first particle having the second particles. 1. An electrostatic latent image developing toner comprising a plurality of toner particles , whereinthe toner particles each include a toner mother particle and a plurality of external additive particles,the toner mother particle contains at least a hinder resin and a colorant, and a first particle;', 'a plurality of second particles disposed at a surface of the first particle; and', 'a coat layer coating the first particle having the second particles., 'the external additive particles each includ.e2. The electrostatic latent image developing toner according to claim 1 , whereinthe first particle is a resin particle, andthe second particles are inorganic particles.3. The electrostatic latent image developing toner according to claim I claim 1 , whereinthe second particles are disposed at the surface of the first particle such that part of each of the second particles is left outside the surface of the first particle.4. The electrostatic latent image developing toner according to claim I claim 1 , whereinthe second particles are disposed so as to be in contact with the surface of the first particle, andpart of each of the second particles protrudes from the surface of the first particle with the coat layer coating the second particles.5. The electrostatic latent image developing toner according to claim 1 , whereinthe second particles have a smaller volume median diameter than the first particle.6. The electrostatic latent image developing toner according to claim I claim 1 , whereinthe coat ...

Toner, image forming apparatus, process cartridge, and developer

A toner, including: a colorant; and a binder resin, wherein a spreadability of the toner under a non-pressurized condition is 1.20 to 2.50, wherein a common logarithm of a storage modulus at 100° C. (G′) of the toner is 4.0 [log Pa] to 5.0 [log Pa], and wherein a ratio of a loss modulus at 100° C. (G″) to the storage modulus at 100° C. (G′) of the toner (G″/G′=tan δ) is 1.1 to 2.2.

Electrostatic charge image developing toner

An electrostatic charge image developing toner includes a plurality of toner particles. Each of the plurality of toner particles includes a toner core and a shell layer covering the toner core. The shell layer contains a thermosetting resin. A content ratio of a toner component insoluble in tetrahydrofuran is at least 90 mass % relative to mass of the toner. Melt viscosity of the toner at 75° C. is at least 1.0×10 4 Pa·s and no greater than 1.0×10 5 Pa·s. The thermosetting resin is preferably a melamine resin or a urea resin. The toner core preferably contains a binder resin, and the binder resin has a softening point (Tm) of at least 85° C. and no greater than 95° C.

Electrostatic charge image developing toner and toner container

An electrostatic charge image developing toner includes toner particles containing an amorphous resin and a crystalline resin, wherein when a softening temperature is measured at 30 points in surface layer parts of the toner particles, a difference (T H (° C.)−T L (° C.)) between a maximum value (T H (° C.)) and a minimum value (T L (° C.)) out of the softening temperatures at the 30 points is from 25° C. to 100° C.

Electrostatic charge image developing toner

An electrostatic charge image developing toner includes a toner core including at least a binder resin and a shell layer configured to cover the toner core. The shell layer includes an inner layer and an outer layer. A difference obtained by subtracting a SP value of a material for the inner layer from a SP value of the binder resin, ΔSP 1 , is 0.3 or larger and 1.4 or lower. A difference obtained by subtracting a SP value of a material for the outer layer from the SP value of the material for the inner layer, ΔSP 2 , is 0.5 or larger and 1.6 or lower. The ΔSP 1 is below the ΔSP 2 .

FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, ELECTROPHOTOGRAPHIC DEVELOPER, AND METHOD FOR MANUFACTURING FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER

An object of the present invention is to provide a ferrite carrier core material for an electrophotographic developer having desired resistance properties and charging properties with small environmental variation of resistivity and charge amount while maintaining the advantages of ferrite carriers, a ferrite carrier for an electrophotographic developer, an electrophotographic developer using the ferrite carrier, and a method for manufacturing the ferrite carrier core material for an electrophotographic developer. In order to solve the problem, a ferrite carrier core material comprising ferrite particles containing 15 mass % or more and 25 mass % or less of Mn, 0.5 mass % or more and 5.0 mass % or less of Mg, 0.05 mass % or more and 4.0 mass % of Sr, and 45 mass % or more and 55 mass % or less of Fe, with Zr localized in the surface thereof is used. 1. A ferrite carrier core material for an electrophotographic developer , comprising a ferrite particle containing 15 mass % or more and 25 mass % or less of Mn , 0.5 mass % or more and 5.0 mass % or less of Mg , 0.05 mass % or more and 4.0 mass % of Sr , and 45 mass % or more and 55 mass % or less of Fe , with Zr localized in the surface thereof.2. The ferrite carrier core material for an electrophotographic developer according to claim 1 , containing 0.1 mass % or more and 4.0 mass % or less of Zr.3. The ferrite carrier core material for an electrophotographic developer according to claim 1 , having a degree of localization of Zr represented by the following Expression (1) of 2.0 or more and 70.0 or less:{'br': None, 'i': s', 'c, 'Degree of localization of Zr=Zr()/Zr() \u2003\u2003(1)'}wherein Zr(s) represents a Zr content (mass %) in the surface part of the cross section of a particle examined by energy dispersive X-ray analysis, and Zr(c) represents a Zr content (mass %) in the central part of the cross section of a particle examined by energy dispersive X-ray analysis.4. The ferrite carrier core material for an ...

TONER FORMULATION USING WAX ENCAPSULATED WITH A STYRENE ACRYLATE LATEX FORMULATION AND METHOD OF PREPARING THE SAME

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylate encapsulated wax latex, a pigment, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed method of preparing the toner results in a change in the distribution of the components of the toner particle wherein the lower molecular weight resins, the pigment, and the wax are located away from the surface of the toner particle and the pigment is clinging to the edge of the wax domain. 1. A method of producing toner comprising: (a) preparing a wax dispersion;', '(b) preparing a monomer solution;', '(c) seeding the wax dispersion with a portion of the monomer solution;', '(d) preparing an initiator solution; and', 'to the seeded wax dispersion, wherein a monomer encapsulated wax latex is formed;', '(e) adding the initiator solution and a remaining portion of the monomer solution'}, 'preparing a first polymer emulsion;', 'preparing a second polymer emulsion;', 'preparing a pigment dispersion;', 'combining and agglomerating the first polymer emulsion with the pigment dispersion and the monomer encapsulated wax latex to form toner cores;', 'combining and agglomerating the second polymer emulsion with the toner cores to form toner shells around the toner cores; and', 'fusing the aggregated toner cores and toner shells to form toner particles., 'preparing a latex to encapsulate a wax, the preparing of the latex including the steps of2. The method of claim 1 , wherein the monomer solution includes a hydrophilic monomer having carboxyl (—COOH) and hydroxy (—OH) functional groups and a hydrophobic monomer having styrene and acrylate functionality.3. The method of claim 2 , wherein the hydrophobic monomer having acrylate functionality is an alkyl acrylate.4. The method of claim 3 , wherein the alkyl acrylate monomer is butyl acrylate.5. The method of claim 3 , ...

TONER FORMULATION USING CRYSTALLINE POLYESTER ENCAPSULATED WITH A STYRENE ACRYLATE LATEX FORMULATION AND METHOD OF PREPARING THE SAME

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylic encapsulated crystalline polyester latex, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed method of preparing the toner results in a change in the distribution of the components of the toner particle wherein the lower molecular weight resins, the pigment, and the wax are located away from the surface of the toner particle. 1. A method of producing toner comprising:preparing a latex to encapsulate a crystalline polyester, the preparing of the latex including the steps of:(a) preparing a crystalline polyester dispersion;(b) preparing a monomer solution;(c) seeding the crystalline polyester dispersion with a portion of the monomer solution;(d) preparing an initiator solution; and(e) adding the initiator solution and a remaining portion of the monomer solution to the seeded crystalline polyester dispersion, wherein a polymer encapsulated crystalline polyester latex is formed;preparing a first polymer emulsion;preparing a second polymer emulsion;preparing a wax emulsion;preparing a pigment dispersion;combining and agglomerating the first polymer emulsion with the pigment dispersion, wax emulsion and the monomer encapsulated crystalline polyester latex to form toner cores;combining and agglomerating the second polymer emulsion with the toner cores to form toner shells around the toner cores; andfusing the aggregated toner cores and toner shells to form toner particles,wherein the monomer solution includes a hydrophilic monomer having one of a carboxyl (—COOH) functional group and a hydroxy (—OH) functional group and a hydrophobic monomer having styrene and acrylate functionality, and wherein the hydrophilic monomer having having one of a carboxyl (—COOH) functional group and a hydroxy (—OH) functional group is at least one of ...

Metallic Toner Comprising Metal Integrated Particles

A toner and a toner process including providing at least one hybrid metallic toner component selected from the group consisting of hybrid metallic-latex particles, hybrid metallic-wax particles, hybrid metallic-colorant particles, and combinations thereof; contacting the at least one hybrid metallic toner component with one or more components selected from the group consisting of a latex polymer, a wax; and a colorant to form a blend; heating the blend at a temperature below the glass transition temperature of the latex polymer to form aggregated toner particles; adding a coalescing agent to the toner particles thereby coalescing the toner particles; and recovering the toner particles.

Electrostatic latent image developing toner

An electrostatic latent image developing toner includes a plurality of toner particle each including a toner mother particle and silica particles attached to a surface of the toner mother particle. The toner mother particle includes a toner core and a shell layer. The shell layer includes a first domain substantially formed from a first resin and a second domain substantially formed from a second resin. Both the first resin and the silica particles have higher positive chargeability than the second resin. A shell coverage is at least 40% and no greater than 90%. The toner particles each have an average value of surface potentials measured using a scanning probe microscope of at least +50 mV and no greater than +350 mV and a standard deviation thereof of no greater than 120 mV.

Latent electrostatic image developing toner

A toner including: a core particle containing at least a binder resin, a colorant and a releasing agent; and a shell on a surface of the core particle, wherein the toner gives a supernatant having a transmittance of 50% to 95% with respect to light having a wavelength of 800 nm, where the supernatant is formed after 3 g of the toner is added to 40 g of ion-exchange water containing 0.5% by mass of sodium dodecyl sulfate, followed by stirring for 90 min and by irradiating with ultrasonic waves of 20 kHz and 80 W for 5 min, and a liquid containing the toner dispersed therein is centrifugated at 3,000 rpm for 5 min.

TONER

A toner includes toner particles. The toner particles each include a core, a shell layer, and an external additive. The core contains a first thermoplastic resin as a binder resin. The shell layer partially covers a surface of the core. The external additive is attached to regions of the surface of the core that are not covered with the shell layer. The external additive includes external additive particles. The external additive particles protrude outward in radial directions of the core further than a surface of the shell layer. At least part of surfaces of the external additive particles is exposed from the shell layer. The shell layer contains a second thermoplastic resin or a thermosetting resin. The second thermoplastic resin has a higher softening point than the core. The shell layer has a thickness of at least 5 nm. 1. A toner comprising toner particles , whereinthe toner particles each include a core, a shell layer, and an external additive, the core containing a first thermoplastic resin as a binder resin, the shell layer partially covering a surface of the core, the external additive being attached to regions of the surface of the core that are not covered with the shell layer,the external additive includes external additive particles,the external additive particles protrude outward in radial directions of the core further than a surface of the shell layer,at least part of surfaces of the external additive particles is exposed from the shell layer,the shell layer contains a second thermoplastic resin or a thermosetting resin, the second thermoplastic resin having a higher softening point than the core, andthe shell layer has a thickness of at least 5 nm.2. The toner according to claim 1 , whereinthe shell layer contains the second thermoplastic resin, andthe softening point of the second thermoplastic resin is at least 25° C. higher than a softening point of the core.3. The toner according to claim 1 , whereinthe shell layer contains the second ...

Toner

Toner comprising a toner particle, the toner particle includes a toner core particle and an organosilicon polymer covering the toner core particle surface, the organosilicon polymer has a structure represented by R4—SiO3/2 (R4 each independently represents an alkyl group having 1 to 6 carbon atoms or a phenyl group), the toner core particle includes a resin A having a substituted or unsubstituted silyl group in a molecule thereof, a substituent of the substituted silyl group is at least one selected from the group consisting of an alkyl group having 1 or more carbon atoms, an alkoxy group having 1 or more carbon atoms, a hydroxy group, a halogen atom, and an aryl group having 6 or more carbon atoms, a content of silicon atoms in the resin A is 0.02 to 10.00% by mass, and a content of silicon atoms in the organosilicon polymer is 30 to 50% by mass.

用于静电荷图像显影的调色剂、用于静电荷图像显影的显影剂及成像装置

本发明提供了一种用于静电荷图像显影的调色剂，该调色剂具有包含第一粘合剂树脂及着色剂的核层，和包含第二粘合剂树脂并覆盖所述核层的壳层，其特征在于满足下述方程(1)和下述方程(2)，·方程(1)2.0×10 5 ≤G’(60)≤4.0×10 6 ；·方程(2)10≤G’(60)/G’(80)≤40。其中，在方程(1)及方程(2)中，G’(60)代表在温度为60℃、振动频率为6.28弧度/秒、应变量为0.01％～0.5％的条件下测定的该用于静电荷图像显影的调色剂的储存弹性模量(Pa)，G’(80)代表在温度为80℃、振动频率为6.28弧度/秒、应变量为0.01％～0.5％的条件下测定的该用于静电荷图像显影的调色剂的储存弹性模量(Pa)。本发明还提供了包含所述调色剂和载体的用于静电荷图像显影的显影剂，以及使用该调色剂的成像装置。

Display control circuit

(57)【要約】 【課題】この発明は、現像能力を確保するために潜像担 持体線速に対する現像剤担持体線速を下げるとライン画 像が悪くなりハーフトーン後端白抜け等の不具合が生ず るという課題を解決しようとするものである。 【解決手段】 この発明は、直流バイアスに交流バイア スを重畳した現像バイアスが印加され、磁性トナーを含 む２成分現像剤１４で潜像を現像する２成分磁気ブラシ 現像装置１２を備えた画像形成装置において、前記磁性 トナーの磁性体含有率を５ｗｔ％〜３５ｗｔ％としたも のである。

Security toner and process of using thereof

The present disclosure relates to toner compositions containing an IR-taggant, and method of making thereof. The disclosure also relates to method for confirming authenticity of an item.

Security toner and process of using thereof

본 개시내용은 IR-타간트를 함유하는 토너 조성물 및 이의 제조 방법에 관한 것이다. 본 개시내용은 아이템의 진정성을 확인하는 방법에 관한 것이다. The present disclosure relates to a toner composition containing IR-taggant and a method for preparing the same. The present disclosure relates to a method of verifying the authenticity of an item.

Microencapsulated toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Microencapsulated toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Toner, developer using the toner, developer storage container, and image forming method

【課題】微粒子を外添剤として用いた際に生じていた課題に対し新たな手法で従来と同等以上の機能を有するトナーの提供。 【解決手段】少なくとも結着樹脂および着色剤を有するトナー粒子において、トナー母体粒子表面に珪素化合物の反応物が化学的に結合して外殻層を形成していることを特徴とするトナー。前記珪素化合物の反応物の含有量（質量比）が、前記トナー母体粒子１００質量部に対して前記珪素化合物の反応物中の珪素原子が０．５〜３０質量部であることが好ましい。 【選択図】なし

Aggregation processes

A process comprising aggregating a colorant encapsulated polymer particle containing a colorant with colorant particles and wherein said colorant encapsulated latex is generated by a miniemulsion polymerization.

Nonmagnetic toner

결착 수지, 착색제 및 왁스 성분을 적어도 함유하는 토너 입자와, 무기 미분체를 갖는 비자성 토너이며, 1) 50 내지 80℃의 온도 범위에 있어서, 상기 토너의 저장 탄성률(G')과 손실 탄성률(G")의 비인 손실 탄젠트(tanδ)의 값이 최대가 되는 온도를 T1이라고 하였을 때, 상기 온도 T1에서의 상기 토너의 저장 탄성률(G'(T1))의 값이 5.00×10 7 ≤G'(T1)≤1.00×10 9 (dN/m 2 )이고, 2) 상기 50 내지 80℃의 온도 범위에 있어서, 상기 토너의 저장 탄성률(G')과 손실 탄성률(G")의 비인 손실 탄젠트(tanδ)의 값이 0.80 내지 2.00의 값을 나타내는 온도가 연속해서 15℃ 이상의 범위에서 존재하고, 3) 120 내지 160℃의 온도 범위에 있어서, 상기 토너의 저장 탄성률(G')과 손실 탄성률(G")의 비인 손실 탄젠트(tanδ)의 값이 1.00 이상인 것을 특징으로 하는 비자성 토너에 관한 것이다. A toner particle containing at least a binder resin, a colorant, and a wax component, and a non-magnetic toner having an inorganic fine powder. 1) The storage elastic modulus (G ') and the loss modulus of the toner in a temperature range of 50 to 80 deg. When the temperature at which the value of the loss tangent (tanδ), which is the ratio of G &quot;) is maximum, is T1, the value of the storage elastic modulus (G '(T1)) of the toner at the temperature T1 is 5.00 × 10 7 ? (T1)? 1.00 × 10 9 (dN / m 2 ), and 2) a loss tangent at a ratio of the storage elastic modulus (G ′) and the loss modulus (G ″) of the toner in the temperature range of 50 to 80 ° C. tanδ) is continuously present in a range of 15 ° C. or higher, and 3) in a temperature range of 120 ° C. to 160 ° C., and a storage modulus (G ′) and loss modulus (G) of the toner. A non-magnetic toner is characterized in that the value of the loss tangent tan?

Toner composition

Patent RU2019100501A3

ВУ“? 2019100501`” АЗ Дата публикации: 24.02.2022 Форма № 18 ИЗПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2019100501/04(000749) 11.01.2019 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 15/878,962 24.01.2018 05 Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ЗАЩИТНЫЙ ТОНЕР И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ Заявитель: ЗИРОКС КОРПОРЕЙШН, 0$ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) (03С 9/087 (2006.01) 003С 9/093 (2006.01) В420 25/382 (2014.01) 003С( 9/09 (2006.01) В41М 3/14 (2006.01) (090 11/00 (2014.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) 0030 9/00-©03С 9/18, С09Б 11/00-С09Р 11/40, ВАМ 3/14, В420 25/00-В42) 25/485 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): РУ\У/Р1, Езрасепе, Соозе, РабЗеагсЬ 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием ...

Capsule toner and its production

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus

본 발명은 제1 결착 수지 및 착색제를 함유하는 코어층과, 제2 결착 수지를 함유하고 또한 상기 코어층을 피복하는 쉘층을 가진 정전하상 현상용 토너에 있어서, The present invention relates to a toner for electrostatic image development, comprising: a core layer containing a first binder resin and a colorant; and a shell layer containing a second binder resin and covering the core layer. 하기 식(1) 및 하기 식(2)을 만족하는 것을 특징으로 하는 정전하상 현상용 토너를 제공한다. There is provided a toner for developing electrostatic images, which satisfies the following formula (1) and the following formula (2). ·식(1) 2.0×10 5 ≤ G'(60) ≤ 4.0×10 6 Equation (1) 2.0 x 10 5 ≤ G '(60) ≤ 4.0 x 10 6 ·식(2) 10 ≤ G'(60)/G'(80) ≤ 40 Equation (2) 10 <G '(60) / G' (80) <40 [식(1) 및 식(2) 중, G'(60)은 온도 60℃, 진동 주파수 6.28 rad/초, 변형율 0.01∼0.5%의 조건으로 측정한 상기 정전하상 현상용 토너의 저장 탄성률(Pa)을 나타내고, G'(80)은 온도 80℃, 진동 주파수 6.28 rad/초, 변형율 0.01∼0.5%의 조건으로 측정한 상기 정전하상 현상용 토너의 저장 탄성률(Pa)을 나타낸다.] [Equation (1) and (2), G'60 is the storage modulus (Pa of the electrostatic image developing toner measured under conditions of a temperature of 60 DEG C, a vibration frequency of 6.28 rad / sec and a strain of 0.01 to 0.5% (Pa). G '(80) represents the storage modulus (Pa) of the toner for developing electrostatic images measured under conditions of a temperature of 80 DEG C, a vibration frequency of 6.28 rad / sec and a strain of 0.01 to 0.5%.] 또한, 본 발명은 상기 토너와 캐리어로 이루어지는 정전하상 현상용 현상제와, 상기 토너를 사용한 화상 형성 장치를 제공한다. The present invention also provides a developer for electrostatic image development comprising the toner and a carrier, and an image forming apparatus using the toner. 정전하상 현상용 토너, 정전하상 현상용 현상제, 화상 형성 장치 Toner for developing electrostatic images, Developer for developing electrostatic images, Image forming apparatus

Toner, device for image formation, technological cartridge and applicant

FIELD: printing industry.SUBSTANCE: toner containing colouring matter is proposed; a binder resin containing a crystalline polyester and a non-crystalline polyester modified with urea and unmodified, and ethyl acetate in an amount of 1-30 μg/g. The degree of crystallinity of toner is 10% or more; ability to spread toner at atmospheric pressure - 1.20-2.50; the decimal logarithm of the dynamic modulus of elasticity at 100°C (G') of the toner is from 4.0 [log Pa] to 5.0 [log Pa], and ratio of loss modulus at 100°C (G") to the dynamic modulus of elasticity at 100°C (G') of toner ((G"/G')=tan δ) is 1.1-2.2. An image forming device, a technological cartridge, and a developer using the claimed toner are also provided.EFFECT: proposed toner is capable of low-temperature fixation in conditions of low temperature and high ambient humidity.8 cl, 3 dwg, 3 tbl, 6 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 627 356 C2 (51) МПК G03G 9/08 (2006.01) G03G 9/087 (2006.01) G03G 9/10 (2006.01) G03G 15/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015143999, 13.03.2014 (24) Дата начала отсчета срока действия патента: 13.03.2014 (72) Автор(ы): СУГИУРА Хидеки (JP), КУМАИ Мио (JP) (73) Патентообладатель(и): РИКОХ КОМПАНИ, ЛТД. (JP) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: WO 2012011546 A, 26.01.2012. RU Приоритет(ы): (30) Конвенционный приоритет: R U 07.08.2017 2454691 C1, 27.06.2012. US 7323281 B2, 29.01.2008. 15.03.2013 JP 2013-054299 (45) Опубликовано: 07.08.2017 Бюл. № 22 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.10.2015 (86) Заявка PCT: JP 2014/057640 (13.03.2014) (87) Публикация заявки PCT: 2 6 2 7 3 5 6 (43) Дата публикации заявки: 26.04.2017 Бюл. № 12 2 6 2 7 3 5 6 R U Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ТОНЕР, УСТРОЙСТВО ДЛЯ ФОРМИРОВАНИЯ ...

Polymer particles containing a cross-linked polymer core and a linear non-cross-linked polymer shell, and toner formed therefrom

Polymer particles comprising a cross-linked polymer core and a linear non-cross-linked polymer shell may be formed by emulsion polymerization. The polymer particles may be used in forming toner.

Toner and method for producing the toner

Low melt toner

Toners containing encapsulated crystalline resin have lower minimum fix temperatures without charge degradation.

Colorful carbon powder and preparation method thereof

A method of preparing a color toner by: a) preparing an anionic polymer composite emulsion comprising wax with a wax particle and nanosilica as core by in situ emulsion polymerization; b) preparing a cationic polymer composite emulsion comprising colorant with a colorant and nanosilica as core by in situ emulsion polymerization; c) agglutinating the anionic polymer composite emulsion comprising wax and the cationic polymer composite emulsion comprising colorant; and d) filtering, washing, and drying the product obtained in c). The color toner prepared by this method. The color toner has high development density, high resolution, low bottom ash, low waste rate, and low consumption, and is easy to recover and recycle.

Toner, image forming apparatus, process cartridge, and developer

Resin particles for toner and toner prepared therewith

The present invention provides a resin particle for toner, which is allowed to contain colorant particles and/or charge-controlling agent particles through a miniemulsion method, and a toner prepared with the resin particles aggregated/fused.

Toner for electrostatic charge image developing, developer for electrostatic charge image developing, and image forming apparatus

Provided is a toner for electrostatic charge image developing, comprising a core layer which contains a first binder resin and a coloring agent, and a shell layer which contains a second binder resin and covers the core layer, characterized in that the following equation (1) and the following equation (2) are satisfied, Equation   ( 1 )   2.0 × 10 5 ≤ G ′ ( 60 ) ≤ 4.0 × 10 6 Equation   ( 2 )   10 ≤ G ′ ( 60 ) / G ′ ( 80 ) ≤ 40 wherein, in the equation (1) and the equation (2), G'(60) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 60°C, a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%, and G'(80) represents a storage elastic modulus (Pa) of the toner for electrostatic charge image developing measured under the conditions of a temperature of 80°C, a vibration frequency of 6.28 rad/sec, and a strain amount of 0.01 to 0.5%. Also provided is a developer for electrostatic charge image developing comprising the toner and a carrier, and an image forming apparatus using the toner.

Toner for developing static image and an image forming method

A toner for developing a static image comprising at least a resin, colorant and crystalline substance is disclosed. The toner particle has a domain-matrix structure and the domain has an average of the ratio of the major axis to the minor axis of from 1.5 to 2.5 when the domain is approximated by an ellipse.

Toner

Toner and method for producing the same

Electrostatographic magnetic toner

toner

Pressure fixable microencapsulated toner

Toner and method for producing the same

Microcapsule toner having a microphase separation structure

A microcapsule toner comprising an outer shell and a core containing a fixable component, wherein the fixable component has a micro phase separation structure composed of a liquid continuous phase and a disperse phase containing a resin and having a glass transition temperature of not higher than 20 DEG C., and said fixable component contains a block and/or graft copolymer comprising two or more monomer components, at least one of the monomer components being compatible with said disperse phase with the other monomer component or components being compatible with said continuous phase. On pressure application, the toner is instantaneously fixed to provide a fixed toner image which does not fall off or is not destroyed by outer force. The fixable component forms a stable micro phase separation structure which satisfies both fluidity before fixing and hardness after fixing and retains fixability during long-term preservation.

Method for preparing toner and toner prepared by using the method

본 발명은 폴리에스테르 수지 및 착색제를, 친수성기 및 소수성기를 가지며 하나 이상의 반응성 관능기를 포함하는 거대 단량체 및 반응성 유화제 중에서 선택된 하나 이상과 혼합하여 코어(core)를 제조하는 단계; 및 상기 코어의 외부표면에 하나 이상의 중합성 단량체와 개시제를 가하여 중합반응하고, 상기 거대 단량체 및 반응성 유화제 중 하나 이상이 상기 중합반응에 참여하여 셸(shell)을 제조하는 단계;를 포함하는 토너의 제조방법을 제공한다. 또한 본 발명은 상기 제조방법을 이용하여 제조한 토너, 상기 토너를 이용하는 화상 형성 방법, 및 상기 토너를 수용한 화상 형성 장치에 관한 것이다. 본 발명에 따른 제조방법을 이용하면, 코어/셸 구조의 제조방식으로 저온 정착 및 화상특성이 우수한 폴리에스테르 수지를 코어 조성물로 사용하고, 보전성과 대전특성이 우수한 스티렌을 셸 조성물로 사용함으로써 저온 정착의 고속, 고품질의 화상 형성 장치를 제조할 수 있다. 또한, 반응성 유화제의 사용으로 세척공정을 단순화할 수 있으며, 오폐수의 발생량을 감소시킬 수 있기 때문에 환경적인 측면에서도 매우 유리하다.

Process for producing toner for developing electrostatically charged images

Suspension polymerized toner in core-shell structure with positive charges and preparation method

具有正电荷的核壳结构的悬浮聚合墨粉，是将构成墨粉核粒子的组合物与水性分散液混合后通过升温聚合反应得到墨粉软核粒子悬浮分散液，再经水性聚合反应形成在该软核粒子外包覆有密集正电荷的刚性壳层的核壳复合粒子。其制备方法是将构成墨粉软核树脂的单体油相与水性分散液混合，悬浮造粒后经升温聚合反应使单体油滴粒子转化为墨粉软核粒子悬浮分散液；将高Tg壳单体加入阴离子表面活性剂中乳化后，与阳离子单体分别加入具有软性墨粉核粒子的悬浮分散液中混合后第二次聚合，再清洗、过滤。本发明由于阳离子单体与墨粉壳树脂单体具有很好的反应活性，可在软性墨粉核粒子外表面包覆具有密集正电荷的树脂层，形成的墨粉成像特性、低温定影性和转印性佳。

Electrostatic charge image developing toner

本发明提供一种静电荷像显影用调色剂。所述静电荷像显影用调色剂具备：至少含有粘结树脂的调色剂核和包覆调色剂核的壳层。壳层由内层和外层构成。粘结树脂的SP值减去内层的材料的SP值得到的差ΔSP 1 是0.3以上且1.4以下。内层的材料的SP值减去外层的材料的SP值得到的差ΔSP 2 是0.5以上且1.6以下。ΔSP 1 小于ΔSP 2 。

Toner particle for high speed single component development system

本发明公开了一种调色剂组合物，所述调色剂组合物包含调色剂颗粒，所述调色剂颗粒包含树脂、任选的蜡和任选的着色剂，其中所述树脂为包含胶乳核、胶乳壳和胶乳凝胶的三胶乳系统；并且胶乳核的玻璃化转变温度Tg低于胶乳壳的玻璃化转变温度Tg。本发明还公开了一种制备调色剂组合物的方法，所述方法包括共混包含基础聚合物的胶乳核树脂和胶乳凝胶及任选的添加剂；加入凝结剂和酸；使浆料均质化；在搅拌的同时提高温度至接近于胶乳核树脂的玻璃化转变温度的值以形成尺寸为约3至约9μm的聚集颗粒；在受控的速率下向浆料中加入胶乳壳树脂以形成含有调色剂颗粒的批料，所述调色剂颗粒具有核和壳；向批料中加入pH调节剂以冻结调色剂颗粒的生长；通过提高温度至高于壳的玻璃化转变温度的聚结温度，使批料聚结；监测批料的颗粒圆形度；和回收调色剂颗粒。

Toner

【課題】定着性の阻害にならないような薄いシェル相でありながら、コア中の低分子量成分やワックスの染み出しを抑制し、保存安定性に優れたトナーを提供すること。 【解決手段】結着樹脂（Ａ）、着色剤及びワックスを含有するコアに、樹脂（Ｂ）を含有するシェル相を形成したコアシェル構造のトナー粒子を有するトナーであって、トナー粒子が、コアに対して、特定量の樹脂（Ｂ）を含有し、結着樹脂（Ａ）の溶解度パラメータ（ＳＰ値）をＳＰ（Ａ）、樹脂（Ｂ）のＳＰ値をＳＰ（Ｂ）、樹脂（Ｂ）を構成する繰り返しユニットのうち最もＳＰ値の小さい繰り返しユニットのＳＰ値をＳＰ（Ｃ）、ワックスのＳＰ値をＳＰ（Ｗ）としたとき、ＳＰ（Ａ）、ＳＰ（Ｂ）、ＳＰ（Ｃ）及びＳＰ（Ｗ）が特定の関係を満たすことを特徴とするトナー。 【選択図】なし

Nonmagnetic toner

Super low melt toners.

Se proporcionan partículas de látex ambientalmente amigables las cuales incluyen un agente gelificante y un pigmento encapsulado en una resma amorfa, las cuales pueden ser utilizadas en la formación de pigmentos orgánicos de fusión superbaja EA. También se proporcionan los métodos para proporcionar esas resinas y pigmentos orgánicos.

Toner

Toner characterized in that assuming that the glass transition point of the toner measured by a differential scanning calorimeter (DSC) is represented by T 1 (° C.), in a micro compression test at T 1 −10 (° C.), when a load from 0.00 N (0.00 mgf) to 7.85×10 −4 N (80.00 mgf) is applied at the intervals of 7.85×10 −7 N (0.08 mgf) to a single particle of the toner, the strain value A 80a (%) at 7.85×10 −4 N is 35.0 to 75.0%; and in a load (x-axis)-strain (y-axis) curve obtained by the micro compression test, the ratio of an area (S 1a ) of a specific region, relative to an area (S 2a ) of a specific region, (S 1a /S 2a ), is 1.5 to 3.5.

TONER PARTICLES FOR HIGH-SPEED ONE-COMPONENT MANIFESTATION SYSTEMS

1. Композиция тонера, содержащая:частицы тонера, содержащие:смолу;необязательный воск; инеобязательное красящее вещество,в которой:смола представляет собой систему из трех латексов, содержащую:латексное ядро, включающее базовый полимер;латексную оболочку, включающую оболочечный полимер; илатексный гель; итемпература стеклования Tg латексного ядра ниже, чем температура стеклования Tg латексной оболочки.2. Композиция тонера по п.1, в которой частицы тонера имеют диаметр от около 3 до около 10 мкм.3. Композиция тонера по п.1, в которой частицы тонера имеют круглость от около 0,945 до около 0,998.4. Композиция тонера по п.1, в которой частицы тонера имеют удельную поверхность по методу БЭТ от около 0,8 м/г до около 1,5 м/г.5. Композиция тонера по п.1, где композиция тонера представляет собой однокомпонентную композицию тонера.6. Композиция тонера по п.1, где:температура стеклования Tg латексного ядра составляет от около 40°C до около 65°C; итемпература стеклования Tg латексной оболочки составляет от около 50°C до около 75°C.7. Композиция тонера по п.1, в которой:молекулярная масса Mw латексного ядра составляет от около 15 kpse до около 65 kpse; имолекулярная масса Mw латексной оболочки составляет от около 15 kpse до около 65 kpse.8. Композиция тонера по п.1, где композиция тонера предназначена для использования в высокоскоростных электрофотографических устройствах, имеющих скорость вывода на печать, по меньшей мере, около 50 страниц в минуту.9. Способ изготовления композиции тонера, включающий:формирование суспензии, содержащей частицы, путем объединения:эмульсии, содержащей смолу, которая содержит смолу латексного ядра, включающую базовую полимерную смолу, и

Electrophotographic toner and manufacturing method

Capsule toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Patent JPS5421098B2

Metal toner containing particles with integrated metal

Заявленная группа изобретений относится к области тонеров и способов получения тонеров. Заявленная группа изобретений включает способ получения тонера и варианты эмульсионного агрегационного тонера. Причем заявленный способ получения тонера включает: обеспечение по меньшей мере одного гибридного металлического компонента тонера, выбранного из группы, состоящей из гибридных металлолатексных частиц, содержащих латексные частицы, имеющие нанесенный на них слой металла, гибридных металловосковых частиц, содержащих восковые частицы, имеющие нанесенный на них слой металла, гибридных металлоокрашивающих частиц, содержащих частицы окрашивающего вещества, имеющие нанесенный на них слой металла, и их комбинаций, приведение в контакт по меньшей мере одного гибридного металлического компонента тонера с одним или более компонентами, выбранными из группы, состоящей из латексного полимера, воска и окрашивающего вещества, с получением смеси, нагревание смеси при температуре ниже температуры стеклования латексного полимера с получением агрегированных частиц тонера, добавление коалесцирующего агента к частицам тонера, что приводит к коалесценции частиц тонера и выделению частиц тонера. Технический результат заключается в обеспечении надежного способа получения серебряного металлического тонера, а также в обеспечении улучшенного металлического тонера и частиц металлического тонера, которые могут быть использованы в качестве дисперсии исходного материала в процессе эмульсионной агрегации. 4 н. и 19 з.п. ф-лы, 4 ил.

Image forming apparatus and image forming method

An image forming apparatus includes: an image holding member; a toner image formation device that forms a toner image using a toner, the toner including a first component and a second component that are present separately from each other and form a color when they are reacted with each other, and a photocurable composition containing either one of the first component and the second component, the photocurable composition being cured or maintained in an uncured state by applying color forming information, to control the reaction for color formation; a color forming information applying device; a transfer device; a fixing device; and a color formation device.

Method for producing toner for developing electrostatic images

Toner, method of preparing the toner, and developer, image forming method, image forming apparatus, and process cartridge using the toner

A toner is provided including a colorant; a first binder resin; and a second binder resin, wherein an amount of the first binder resin and an amount of the second binder resin are phase separated from each other in the toner, and wherein a phase of the first binder resin is partially or completely covered with a phase of the second binder resin; and a method of preparing the toner, and a developer, an image forming method, an image forming apparatus, and a process cartridge using the toner.

Polymerized toner and method for producing the same

Insulating magnetic encapsulated toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Pressure fixable electrostatagraphic toner

PRESSURE AND HEAT/PRESSURE FIXABLE ENCAPSULATED ELECTROSTATOGRAPHIC TONERS COMPRISING ADHESIVE, SOFT-SOLID CORE MATERIALS ENCAPSULATED IN A POLYMERIC SHELL MATERIAL. DEVELOPER COMPOSITIONS EMPLOYING THE ENCAPSULATED TONERS AND METHODS OF FORMING VISIBLE ELECTROSTATOGRAPHIC TONER IMAGES ARE ALSO DISCLOSED.

Toner compositions

A toner having its surface functionalized with functional groups, and processes for producing the same, are provided.

Styrene/acrylate and polyester hybrid toner

The present disclosure describes toner particles that have polyester resin and styrene/acrylate resin in the core.

Toner, image forming apparatus, and image forming method

Method for producing toner

A method for producing a toner, includes the steps of: preparing a core having a zeta potential at pH 4 of −5 mV or less; and forming a cationic shell layer on a surface of the core in a solution in which a material of the shell layer having miscibility with a solvent of 250% by mass or more and 1000% by mass or less is dissolved in the solvent.

TONER, IMAGE DEVICE, TECHNOLOGICAL CARTRIDGE AND DEVELOPER

Toner for development of electrostatic image and production process thereof

A toner for development of electrostatic images which has a residual polymerizable monomer content lower than 70 ppm and is substantially spherical as demonstrated by the flowability of at least 55%, and a process for producing a toner reduced in residual polymerizable monomer content by subjecting a slurry containing polymer particles obtained by polymerization to a stripping treatment under reduced pressure.

Image forming apparatus and image forming method

Ultra low melting point toner

Patent RU2017138958A3

Toner for electrostatic image development

静電荷像現像用トナーは、複数のトナー粒子を含む。複数のトナー粒子の各々は、トナーコアと、トナーコアを被覆するシェル層とを含む。シェル層は、熱硬化性樹脂を含む。トナーのテトラヒドロフラン不溶分の含有割合が、トナーの質量に対して９０質量％以上である。トナーの７５℃での溶融粘度が１．０×１０4Ｐａ・ｓ以上１．０×１０5Ｐａ・ｓ以下である。熱硬化性樹脂は、メラミン樹脂又は尿素樹脂であることが好ましい。トナーコアは、結着樹脂を含み、結着樹脂の軟化点（Ｔｍ）は、８５℃以上９５℃以下であることが好ましい。 The electrostatic charge image developing toner includes a plurality of toner particles. Each of the plurality of toner particles includes a toner core and a shell layer that covers the toner core. The shell layer includes a thermosetting resin. The content of the tetrahydrofuran insoluble matter in the toner is 90% by mass or more based on the mass of the toner. The melt viscosity at 75 ° C. of the toner is 1.0 × 10 4 Pa · s or more and 1.0 × 10 5 Pa · s or less. The thermosetting resin is preferably a melamine resin or a urea resin. The toner core preferably contains a binder resin, and the softening point (Tm) of the binder resin is preferably 85 ° C. or higher and 95 ° C. or lower.

Toner for developing electrostatic latent images

본 개시에서는, 낮은 PER 요구조건과 더불어 저온 정착성, 고온 내오프셋성, 화상내구성, 유동성 및 고온보존성을 모두 만족시키는 임계적 효과를 달성할 수 있는, 착색제, 바인더 수지 및 왁스를 함유하는 코어입자를 포함하는 토너를 제공한다.

Capsule toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Toner for developing electrostatic image

本发明的目的在于提供一种可抑制定影时的粉尘、提高耐热偏移性、且画质优异的静电荷图像显影用调色剂(以下，称为调色剂)。本发明涉及的调色剂含有粘结树脂、着色剂及蜡，所述蜡在包含于调色剂中的状态下的熔点为55～90℃，且该调色剂的Dt值满足下式。101≤Dt≤195,449/Vp－1,040[式中，Dt表示对在静态环境下对该调色剂进行加热时的粉尘飞散量，Vp表示图像形成装置中换算成A4横向的印刷速度(张/分)，其中Vp为171.2以下。]

Capsule toner

A capsule toner, comprising core particles of a core material exhibiting a cloud point within the range of from 30 to 90 and a penetration within the range of from 2 to 15, and a shell material coating the core particles. The capsule toner is preferably formed by dispersing the core particles in solution of the shell material in a good solvent for the shell material, and then adding a poor solvent for the shell material to cause the deposition of the shell material on the core particles.

Toner compositions

Toner

本发明提供一种调色剂。调色剂含有多个调色剂颗粒，该调色剂颗粒具有核和形成于核的表面的壳层。壳层包含源自热塑性树脂的单元和源自热固性树脂的单体或预聚物的单元。在使用扫描探针显微镜，一边使扫描探针显微镜的悬臂的温度上升，一边对核及壳层各自的杨氏模量进行测量的情况下，如果将壳层的杨氏模量的变化率(30℃～50℃)作为X1、将核的杨氏模量的变化率(30℃～50℃)作为X2、将壳层的杨氏模量的变化率(50℃～70℃)作为Y1、将核的杨氏模量的变化率(50℃～70℃)作为Y2，则满足如下条件。X2/X1是2.0以上且5.0以下。Y2/Y1是4.0以上且7.0以下。

Toner

本发明提供一种调色剂。调色剂含有多个调色剂颗粒，该调色剂颗粒具有核和形成于核的表面的壳层。壳层包含源自热塑性树脂的单元和源自热固性树脂的单体或预聚物的单元。在使用扫描探针显微镜，一边使扫描探针显微镜的悬臂的温度上升，一边对核及壳层各自的杨氏模量进行测量的情况下，如果将壳层的杨氏模量的变化率(30℃～50℃)作为X1、将核的杨氏模量的变化率(30℃～50℃)作为X2、将壳层的杨氏模量的变化率(50℃～70℃)作为Y1、将核的杨氏模量的变化率(50℃～70℃)作为Y2，则满足如下条件。X2/X1是2.0以上且5.0以下。Y2/Y1是4.0以上且7.0以下。

Toner for developing electrostatic latent image

A toner for developing an electrostatic latent image includes a plurality of toner particles. Each of the plurality of toner particles includes an additive attached to a surface of the particle, such that, when the plurality of toner particles are measured by X-ray fluorescence (XRF) spectrometry, an X-ray fluorescence intensity of lanthanum [La] (unit: kcps) and an X-ray fluorescence intensity of strontium [Sr] (unit: kcps) measured by the XRF spectrometry of the toner satisfy the following conditions (1) and (2): 0.2 kcps < [La] < 2 kcps (1), and 100 kcps < [Sr] < 800 kcps (2).

Electrostatic charge image developing toner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Toner

Toner characterized in that assuming that the glass transition point of the toner measured by a differential scanning calorimeter (DSC) is represented by T 1 (° C.), in a micro compression test at T 1 −10 (° C.), when a load from 0.00N (0.00 mgf) to 7.85×10 −4 N (80.00 mgf) is applied at the intervals of 7.85×10 −7 N (0.08 mgf) to a single particle of the toner, the strain value A 80a (%) at 7.85×10 −4 N is 35.0 to 75.0%; and in a load (x-axis)-strain (y-axis) curve obtained by the micro compression test, the ratio of an area (S 1a ) of a specific region, relative to an area (S 2a ) of a specific region, (S 1a /S 2a ), is 1.5 to 3.5.

Toner particle, electrophotographic toner, developing agent, toner cartridge and image forming apparatus, and manufacture method of toner particle

In accordance with an embodiment, a toner particle comprises two or more glass transition temperatures. Wherein, a first glass transition temperature is within a range from 5 degrees centigrade to 20 degrees centigrade and a second glass transition temperature is within a range from 50 degrees centigrade to 65 degrees centigrade.