APPARATUS AND METHOD FOR MARKING MATERIAL FIX LEVEL CONTROL IN A PRINTING APPARATUS

An apparatus and method control fix levels in a printing apparatus. The apparatus can include a media transport configured to transport a media sheet having marking material on at least a first side of the media sheet. The apparatus can include a media sheet rub module configured to rub a rub material against the first side of the media sheet. The apparatus can include a sensor configured to sense marking material on the rub material, the marking material rubbed from the first side of the media sheet onto the rub material. The apparatus can include a controller configured to determine a fix level of marking material on the media sheet based on the sensed marking material on the rub material, the fix level indicating how well the marking material is affixed to the media sheet. 1. An apparatus comprising:a media transport configured to transport a media sheet having marking material on at least a first side of the media sheet;a media sheet rub module configured to rub a rub material against the first side of the media sheet;a sensor configured to sense marking material on the rub material, the marking material rubbed from the first side of the media sheet onto the rub material; anda controller configured to determine a fix level of marking material on the media sheet based on the sensed marking material on the rub material, the fix level indicating how well the marking material is affixed to the media sheet.2. The apparatus according to claim 1 , wherein the controller is configured to determine a fix level of marking material on the media sheet based on a difference between a value corresponding to the sensed marking material on the rub material and a value corresponding to the rub material without marking material.3. The apparatus according to claim 2 , wherein the controller is configured to determine a fix level of marking material on the media sheet by determining a difference between a value corresponding to the sensed marking material on the rub material and a ...

Method of producing liquid toner with polyester resin

A method for producing a liquid toner composition includes: melt-mixing a colorant and a thermoplastic resin in an extruder to homogeneously disperse the colorant in the thermoplastic resin to form a colorant/resin mixture; mixing the colorant/resin mixture with a non-polar liquid to form a dispersion; and cold grinding the dispersion to form toner particles of the colorant/resin mixture dispersed in the non-polar liquid, wherein the particles have an average particle size of less than about 20 μm.

Imaging member having a textured imaging surface and a phase change ink image producing machine having same

A liquid ink imaging member having a top outer imaging surface is provided for receiving image forming ink droplets from a printhead. The liquid ink imaging member includes (a) a substrate member; (b) at least one elastomeric layer formed over the substrate member and including the top outer imaging surface; and (c) a surface texture formed into the top outer imaging surface and comprising asperities spaced apart at most from about one-half to about one pixel spot size for providing contact angle hysteresis to pin image forming ink droplets received thereon, thereby preventing ink droplet drawback, and resulting in quality images.

Apparatus and method for marking material fix level control in a printing apparatus

An apparatus and method control fix levels in a printing apparatus. The apparatus can include a media transport configured to transport a media sheet having marking material on at least a first side of the media sheet. The apparatus can include a media sheet rub module configured to rub a rub material against the first side of the media sheet. The apparatus can include a sensor configured to sense marking material on the rub material, the marking material rubbed from the first side of the media sheet onto the rub material. The apparatus can include a controller configured to determine a fix level of marking material on the media sheet based on the sensed marking material on the rub material, the fix level indicating how well the marking material is affixed to the media sheet.

SHOW-THROUGH MEASUREMENT SYSTEM AND METHOD FOR INKS ON MEDIA

Systems and methods of measuring an amount of show-through in a printed document are disclosed. The systems and methods include an imaging device that scans a back side of the printed document and scans a front side of the printed document with a blank document disposed thereon. The imaging device produces bitmaps related to the scans and calculates bit depths associated with the bitmaps. A difference array is calculated based on the differences between the bitmaps of the back side and front side scans, and the average value and standard deviation of the difference array is calculated. The amount of show-through of the document is measured based on a formula with the calculated average and standard deviation.

Phase change ink image producing machine including an imaging member having a textured imaging surface

A phase change ink image producing machine including (a) a control subsystem for controlling operation of all subsystems and components of the image producing machine; (b) melting apparatus for melting solid phase change ink into melted molten liquid ink; (c) a printhead system located for receiving said melted molten liquid ink, said printhead system being connected to said control subsystem for ejecting droplets of melted molten liquid ink onto an imaging member to form an image and a liquid ink imaging member having a top outer imaging surface for receiving image forming ink droplets from a printhead. The liquid ink imaging member includes (i) a substrate member; (ii) at least one elastomeric layer formed over the substrate member and including the top outer imaging surface; and (iii) a surface texture formed into the top outer imaging surface and comprising asperities spaced apart at most from about one-half to about one pixel spot size for providing contact angle hysteresis to pin ...

Method of producing liquid toner with metallic sheen

A liquid toner includes a carrier liquid, and toner particles including a thermoplastic resin and a metallic colorant dispersed in said thermoplastic resin, the toner particles being dispersed in the carrier liquid. The liquid toner enables formation of printed images having a metallic sheen using a liquid toner imaging process.

Show-through measurement system and method for inks on media

Systems and methods of measuring an amount of show-through in a printed document are disclosed. The systems and methods include an imaging device that scans a back side of the printed document and scans a front side of the printed document with a blank document disposed thereon. The imaging device produces bitmaps related to the scans and calculates bit depths associated with the bitmaps. A difference array is calculated based on the differences between the bitmaps of the back side and front side scans, and the average value and standard deviation of the difference array is calculated. The amount of show-through of the document is measured based on a formula with the calculated average and standard deviation.

Liquid developer compositions with charge adjuvants of a copolymer of an alky acrylamidoglycolate alkyl ether and an alkenylester

A positively charged liquid developer comprised of liquid, thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkyl acrylamidoglycolate alkyl ether and an alkenylester, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment, and which charge adjuvant is of the formula ##STR1## wherein R 1 is hydrogen or alkyl of 1 to 20 carbons; R 2 is H, alkyl of 1 to 20, aryl of 6 to 20 carbons, and aryl alkyl of 7 to 35 carbons; m is from 0 to about 10; and wherein the alkyl and aryl groups optionally contain heteroatoms of F, Cl, O, S, N, Si, and P; R 3 and R 4 are alkyl; and x and y represent the number of segments.

Liquid developer compositions with copolymers

A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge director, and a charge control agent comprised of a PEO:PPO, preferably in a solid form. The developer is suitable for use in electrographic imaging processes.

Liquid developer compositions with cyclodextrins

A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge director, and a charge control agent comprised of a cyclodextrin or a cyclodextrin derivative containing one or more organic basic amino groups.

Liquid developer compositions with cyclodextrins

A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, colorant, a charge director, and a charge control agent comprised of a cyclodextrin or a cyclodextrin derivative containing one or more organic basic amino groups.

Reinforced seamless intermediate transfer member

A seamless intermediate transfer member has a reinforcing member in an endless configuration, a filler material such as a polymer and electrical property regulating material to regulate the electrical properties such as surface and bulk resistivity, dielectric constant and charge dissipation. The seamless intermediate transfer member also has good mechanical properties. The reinforcing member can be prepared by any suitable method such as by weaving. Filler material and electrical regulating material can be applied on, around or embedded into the reinforcing member. The member can be employed in an electrostatographic imaging system with more than one toner imaging station. The member can pick up a separate image from each individual imaging station and transfer the combined image to a suitable substrate. The seamless intermediate transfer member is capable of dissipating charge between toner imaging stations, achieving good transfer efficiencies and has a non-stretch characteristic to attain good registration of a toner image.

Liquid developer containing cyclodextrin

Liquid developer composition

Liquid developer compositions with copolymers

A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge director, and a charge control agent comprised of a PEO:PPO, preferably in a solid form.

Liquid developer compositions and processes

A process for the preparation of liquid developers with reduced fines which comprises heating a liquid developer comprised of thermoplastic resin, pigment, charge adjuvant, liquid hydrocarbon, and optional charge director, wherein said heating is accomplished at about 5° C. below the melting point of said thermoplastic resin, which heating enables said fines comprised of said developer components, and of a size diameter of from about 0.1 to about 0.4 micron to be reduced.

Verfahren und Gerät zur Bilderzeugung mit einem Zwischenübertragungselement

Übertragungsverfahren eines Tonerbildes von einem flexiblen Element auf ein Kopiermedium

Übertragungsverfahren eines Tonerbildes von einem flexiblen Element auf ein Kopiermedium