Träger für eine Flachdruckplatte und Herstellungsverfahren dafür

Verfahren zum Verbinden von Metallgewebe

LITHOGRAPHIC PRESSURE PLATE SUBSTRATE AND PRE-SENSIBILIZED PLATE AND MANUFACTURING PROCESS FOR A LITHOGRAPHIC PRESSURE PLATE

PROCEDURE FOR MANUFACTURING A PHOTOLITHOGRAPHY DISK CARRIER

METHOD FOR JOINING BELT-LIKE METALLIC SHEETS

PURPOSE: To weld and join the belt-like metallic sheets in a state with an arc current stabilized at a set value at the time of subjecting the belt-like metallic sheets to TIG welding by generating an arc at a distance from the belt-like metallic sheets and performing welding on ends of the metallic sheets after the lapse of more than specified seconds from the generating time of the arc to roll a welded and joined part. CONSTITUTION: After the lapse of ≥0.6 second from generating of the arc, the belt-like metallic sheets are welded and joined together. By this method, welding is performed after the arc is stabilized at the set value and welding is performed after the temperature of an electrode is stabilized. A belt-like metallic sheet 10 of an Al alloy is conveyed to a joining device 16 and the tip 10A is cut by a precutting device 18 and abutted exactly on the rear end 22A or superposed thereon slightly. Both ends are abutted on each other by clamps 26 and 28 of welding equipment 24 ...

Verfahren zum Herstellen eines Trägers für eine Flachdruckplatte

Verfahren zum Herstellen eines Flachdruckplattenträgers

PRODUCTION OF BASE FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To prevent the generation of unequal corrugated shapes occurring in the nonuniform distribution of crystal grains and alloy components and to improve the gain as a planographic printing plate by continuously casting and rolling molten aluminum and regulating the draft of subsequent cold rolling and intermediate annealing temp. CONSTITUTION: The molten aluminum is continuously cast and rolled directly to a planar form by a twin roll continuous casting machine and is then subjected to cold rolling and intermediate annealing. Further, the surface of the rolled sheet increased in flatness by rolling mills and straightening machine down to a prescribed sheet thickness is subjedted to a surface roughening treatment, by which the base for planographic printing plates is obtd. The thickness of the cold rolled sheet is reduced to 2 to 10%, more preferably 4 to 7% of the continuously cast and rolled sheet by cold rolling and, thereafter, the sheet is subjected to the intermediate annealing ...

Lithographisches Druckplattensubstrat und vorsensibilisierte Platte und Herstellungsverfahren für eine lithographische Druckplatte

Lithographisches Druckplattensubstrat und vorsensibilisierte Platte und Herstellungsverfahren für eine lithographische Druckplatte

DEVICE FOR JOINING BAND-SHAPED METALLIC SHEETS

PURPOSE: To prevent the occurrence of defective welding, porosity and gas scum by providing a tapered electrode on the welding torch tip of welding equipment and forming the specified arc generating surface on the electrode tip. CONSTITUTION: The band-shaped metallic sheet 10 and 22 ends are subjected to TIG welding and joining by the welding equipment 24 and the welded and joined part is rolled by a rolling device to join the band-shaped metallic sheets 10 and 20 together. The tapered electrode 30A is then provided on the welding torch 30 tip of the welding equipment 24. The arc generating surface (lower end face) B formed of the circular flat surface having ≥0.3mm diameter is formed on the tip of the electrode 30A. By this method, even if the arc length is changed suddenly on the welding starting end or the welding finishing end of the welding and joining part, an arc is prevented from becoming unstable. COPYRIGHT: (C)1990,JPO&Japio ...

Verfahren zum Verbinden von Metallbändern

SUPPORT FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To provide a support for a lithographic printing plate used for a lithographic printing plate master or particularly the master having an image recording layer containing an infrared absorber having excellent stain resistance and plate wear resistance when the lithographic printing plate is used. SOLUTION: The support for the lithographic printing plate contains 0.1 to 20 mg/m2 of an adhesion quantity of a rare earth element atom on a surface. COPYRIGHT: (C)2003,JPO ...

Verfahren zum Herstellen eines Trägers für eine Flachdruckplatte

METHOD AND APPARATUS FOR JOINING METAL STRIP

PURPOSE: To improve joining quality of a metal strip by rolling with rolling roller roughened on the surface thereof. CONSTITUTION: A metal strip joining apparatus is constituted with a table 10, rolling roller 12, back bar 14, shaft 16, motor 18, cylinder 20, etc., as the main member, and the rolling roller 12 is constituted with a holding part 12A having a first radius and a projecting part 12B having a second radius. By forming the roughened surface part 13 on the surface of the rolling roller 12 with knurling work or grooving work by machining or with working of thermal- spraying, shot blasting, etc., the roughened surface on the joined surface can be transferred at the time of rolling, and wettability at the time of coating process can be improved with the roughening of the joined part. COPYRIGHT: (C)1991,JPO&Japio ...

Träger aus einer Aluminium-Legierung für eine Hochdruckplatte und Verfahren zur Herstellung dieser Gegenstände

PRODUCTION OF SUPPORTING BODY FOR PLANOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To provide a producing method for a supporting body for planographic printing plate which prevents the development of linear flaw caused by existence of Ti grain or Ti-B grain added in an aluminum or an aluminum alloy to fine the crystals and also, develops stable, uniform and close pits at the time of roughening the surface with an electrolysis. SOLUTION: At the time of producing an aluminum supporting body by adding an Al-Ti or Al-Ti-B alloy wire into molten aluminum, continuously casting and rolling with cooling rolls, executing cold-rolling and heat treatment to make an aluminum alloy plate and executing straightening and surface- roughening, etc., at the time of adding the alloy wire, the vibration is given to the illoy wire. Further, Cu content in the molten aluminum is made to 0.02-0.20% and the Al-Ti or Al-Ti-B alloy wire is added into the molten metal while giving the vibration to the alloy or without giving the vibration and the continuously casting and rolling ...

Verfahren zum Verbinden von Metallgewebe

Verfahren und Vorrichtung zum Verbinden von Bohnen aus Metall.

Verfahren und Vorrichtung zum Verbinden von Bohnen aus Metall.

Träger für eine Flachdruckplatte und Herstellungsverfahren dafür

PRODUCTION OF BASE FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To produce an excellent base for a planographic printing plate having a good electrolytic surface roughening property by subjecting an Al sheet obtd. by continuous casting and rolling to cold rolling, then to a specific heat treatment and subjecting the sheet to finish rolling to a specific sheet thickness. CONSTITUTION: The Al melt obtd. from an ingot by a melting and holding furnace 1 is subjected to continuous casting and rolling by a twin belts continuous casting device 2 and a hot rolling mill 3, by which the sheet of 4 to 30mm is obtd. This sheet is reduced in thickness by 60 to 95% by a cold rolling mill 5 or is rolled to a thickness of 11 to 4 times the final sheet thickness. This cold rolled sheet is thereafter heat treated. The sheet is annealed at 400 to 650°C annealing temp. at a heating up rate of 50°C/sec in an induction heating and annealing device 6 as the heat treatment described above. Further, the sheet is subjected to the second annealing at a heating up rate ...

METHOD AND APPARATUS FOR JOINING HOOP-LIKE METAL PLATE

PURPOSE: To provide joining method and apparatus preventing breakage or rupture of a hoop-like metal plate by uniformly trimming both edges of the wide hoop-like metal plate. CONSTITUTION: The joining apparatus for hoop-like metal plate provides the devices for rolling welded joining part after weld-joining end parts 10A, 22A, e.g. by butting the end parts 10A, 22A of hoop-like metal plate 10, 22 having different width sizes. Further, this apparatus provides means 42 for trimming the end part of the wide hoop-like metal plate 22 in the hoop-like metal plates 10, 22 joining the different widths while corresponding to side edges of the narrow hoop-like metal plate 10 and means 59 for detecting side edge positions of the hoop-like metal plates 10, 22 and shifting the trimming means 42 so as to keep positional relation between the trimming means 42 pre-inputted based on the detected side edge positions and the side edges of the hoop-like metal plates 10, 22. COPYRIGHT: (C)1992,JPO&Japio ...

VERFAHREN ZUM VERBINDEN VON STREIFEN

Verfahren zum Herstellen eines Flachdruckplattenträgers

SUPPORT FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To provide a support for a lithographic printing plate, in which no stain develops in a non-image part regardless of the change of printing conditions and which is excellent in printing performances. SOLUTION: A support is a plate-like body mainly made of aluminum. The percentage of Al6Fe in an intermetallic compound included in the plate like body is 5% or less or the whole amount of the intermetallic compound or that of α-AlFeSi is 10% or less of the whole amount of the intermetallic compound. At the same time, the density of the ink adhesion portions developed either in spots or in annuli on the surface of the plate-like body after the several times of successive alternate feeding of ink and the dampening water having the chlorine ionic concentration of 0.1 to 5% on the surface of the plate-like body and finally the drying-up of the water content left on the surface of the plate-like body corrsponds with the rating number of 8 to 10 in JIS H8502. COPYRIGHT: (C)2000 ...

Verfahren zum Verbinden von Metallbändern

Träger aus einer Aluminium-Legierung für eine Hochdruckplatte und Verfahren zur Herstellung dieser Gegenstände

Verfahren zum Verbinden von Streifen

Lithographic plate support and making method thereof

DEVICE FOR JOINING BELTLIKE METAL PLATES

PURPOSE: To prevent the occurrence of constriction, breakage and cracking in the vicinity of a welded and joined part by making the height to the projection part surface from the pressing art surface of a rolling roll in a joining device larger than the thickness difference of beltlike metal plates and making the height to tapered parts of both corner parts of the projection part almost equal to the thickness differ ence. CONSTITUTION: The beltlike metal plates 26 and 34 are pressed by pressing jigs 28 and 28 and the rolling central part thereof is situated and fixed on a back bar 14. The rolling roll 12 is then moved so that the corner parts of the projection part 12B are situated above the thickest part of the welding and joining part 32 of the beltlike metal plates 26 and 34 to be joined to determine the rolling position. The rolling roll 12 is then depressed and rotated to roll the central part of the welding and joining part 32. At this time, since the difference between L2 and L1 ...

METHOD FOR JOINING BAND-SHAPED METALLIC SHEETS

PURPOSE: To reduce a joining time of the title band-shaped metallic sheets by cutting the superposed band-shaped metallic sheets in the specific angular range with respect to the width direction and then, welding a superposed part. CONSTITUTION: A joining device 16 is constituted of an abutting device 18 and a rolling device 20. Clamps 22 and 28, a cutter and welding equipment 26 are arranged respectively to the inside of the abutting device 18. The band- shaped metallic sheets 10 and 30 are clamped respectively by the clamps 22 and 28 and ends 30A and 30A are superposed on each other in the device 18. The superposed part 32 is then cut at ≥5° angle with respect to the width direction by the cutter 24 and the welding equipment 26 welds a weld zone 46. Further, the rolling device 20 executes rolling and the difference in level on the weld zone 46 is solved. Since the superposed surfaces of the band-shaped metallic sheets 10 and 30 are easily abutted on each other, the joining time of those ...

METHOD FOR JOINING BAND-SHAPED METALLIC SHEETS

PURPOSE: To prevent the occurrence of defective welding, porosity and soot soil by forming an electrode tapered tip in a semispherical shape by an arc generated at a distance from band-shaped metallic sheets and welding the band- shaped metallic sheets together by the semispherical electrode tapered part and rolling the welded and joined part. CONSTITUTION: The band-shaped metallic sheets 10 and 22 ends are subjected to TIG welding and joining. The arc is then generated in a state separated from the band-shaped metallic sheets 10 and 22 and the tapered tip (lower end) B of an electrode 30A of a welding torch 30 is formed in a semispherical shape by no-load welding. The band-shaped metallic sheets 10 and 22 ends are then welded and joined together by the tapered part B of the electrode 30A formed in a semispherical shape. The welded and joined part is then rolled. By this method, even if the arc length is changed suddenly on the welding starting end or finishing end of the welding and joining ...

METHOD FOR JOINING BAND-SHAPED METALLIC SHEETS

PURPOSE: To prevent the strength deterioration of a welded zone due to hole opening and oxidation of the welded zone and to obtain a satisfactory welding effect by supplying inert gas to slightly superposed parts of band-shaped metallic sheets only from the welding torch side to perform welding. CONSTITUTION: The tip 10A of a band-shaped metallic sheet 10 and the rear end 22A of a band-shaped metallic sheet 22 are superposed slightly and fixed on back bars 36 and 36. Inert gas mixed with He and Ar is blown off as shielding gas 38 from nozzles 30A and 30B of a welding torch 30 and oxidation of an electrode 30C of the welding torch 30 and a weld bead of a joining part 40 is prevented and the slightly superposed parts are welded by high-frequency pulse are welding. Since the shielding gas with uneven gas pressure is not supplied to the joining part from the sides of the back bars 36 and 36, hole opening when the metallic sheets 4 are subjected to penetration welding is prevented and the strength ...

Planography strut attachment, mfg. method for original plate of planography printing plate and planography printing plate

Support for lithographic printing plate and presensitized plate and method of producing lithographic printing plate

Disclosed is a support for a lithographic printing plate, wherein an adhering amount of a rare-earth element atom to a surface thereof is 0.1 to 20 mg/mg², and a presensitized plate provided with an image recording layer on the support for a lithographic printing plate. The presensitized plate achieving both high scum resistance and long press life can be realized, which is the same in the case the image recording layer containing an infrared absorbent, where scum would easily occur, is provided onto the support.

SUBSTRATE FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To provide a substrate for a lithographic printing plate on the non- image area of which stain is not generated and which has excellent printing performance. SOLUTION: The substrate prepared by roughening and anodizing the surface of an aluminum (alloy) material is provided and when the surface of the substrate is observed by using an electron beam probe microanalyzer under the below described measuring conditions, the area ratio of overlapping points of Fe and Si of mottled distribution is at most 0.5% and preferably, among the overlapped points of Fe and Si, the number of the points with sizes of at least 1.6×10-7 mm2 is at most 800 per 1 mm2. The method for the measurement [The instrument for the measurement: the electron beam probe microanalyzer (EPMA). The conditions for the measurement are as follows. The acceleration voltage: 20 kV; the electric current for the measurement: 1.3×10-6 A; the diameter of the beam: 0 ×m; Pixel: 425×425; Interval: 0.4 μm (X)×0.4 ...

MANUFACTURE OF SUPPORTING BODY FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To provide a method for manufacturing a supporting body for planographic printing plate by which the variance in the material of an aluminum supporting body is reduced, the efficiency of electrolytic roughening treatment is improved and also a planographic printing plate without generating stripe-like irregularity on the roughened treated surface and excellent in roughening aptitude and having good appearance is made. CONSTITUTION: Molten metal is sent from a melting/holding furnace 1 to a two-roll continuous casting device 2. That is, a hot rolled coil of a thin sheet of 4-30mm thick is directly formed from a molten aluminum metal and coiled with a coiler 3. After that, it is set to a cold rolling mill and, at this time, rolling is executed at the temp. of aluminum of 100-250°C. After cold rolling is executed to a thickness of 2-15 times the final thickness, heat treatment is executed at a heating speed of ≥1°C/sec. After that, cold rolling is executed to the final thickness.

SUBSTRATE FOR LITHOGRAPHIC PRINTING PLATE

(57)【要約】 【課題】 印刷条件の変動に係わらず、非画像部に汚れ が発生しない印刷性能に優れた平版印刷版用支持体を提 供すること。 【解決手段】 少なくともＦｅ、Ｓｉを含むアルミニウ ム合金材の表面を陽極酸化処理してなる平版印刷版用支 持体であって、Ｆｅ、Ｓｉ、Ａｌの３種類の元素からな る金属間化合物（Ａ）と、Ｆｅ、Ｓｉ、Ａｌ、Ｘ（Ｘ は、Ｍｎ、Ｃｕ、Ｍｇ、Ｔｉ、Ｃｒ、およびＺｎからな る群から選ばれる少なくとも１つ）の４種類以上の元素 を含む金属間化合物（Ｂ）との存在比率が、Ａ／Ｂ≦ ０．６であることを特徴とする平版印刷版用支持体であ る。

METHOD FOR MANUFACTURING SUPPORT FOR LITHOGRAPHIC PRINTING PLATE, SUPPORT FOR LITHOGRAPHIC PRINTING PLATE, AND LITHOGRAPHIC PRINTING ORIGINAL PLATE

PROBLEM TO BE SOLVED: To provide a support for a lithographic printing plate to become the support of the lithographic printing plate without bringing about a scumming on a surface of a printed sheet even when printing conditions are different. SOLUTION: The support for the lithographic printing plate is formed by roughing at least one surface of an aluminum plate. In this support, fluorine atoms exist on the roughed surface formed by the roughing so as to satisfy 0.2≤A/(A+B)≤0.9 [wherein A: (counts.eV/sec) = peak area of fluorine on the roughed surface obtained by an X-ray photoelectron spectroscopy, and B: (counts.eV/sec) = peak area of aluminum of the roughed surface obtained by the X-ray photoelectron spectroscopy] with respect to aluminum atoms on the roughed surface. A method for manufacturing the support for the lithographic printing plate is provided. A lithographic printing original plate is also provided. COPYRIGHT: (C)2002,JPO ...

JOINING METHOD FOR STRIP METALLIC PLATE

PURPOSE: To reduce the variation ratio of arc length at the time when an electrode reaches the welding start end and at the time when the electrode is separated from the welding finish end, and to shorten the burn-through length dimensions of the welding start end and the welding finish end, in a joining method for a strip metallic plate. CONSTITUTION: In the joining method for a strip metallic plate for butting or superposing by a minute quantity each end part 10A, 22A of strip metallic plates 10, 22, welding and joining each end part 10A, 22A which is butted or superposed by a minute quantity and rolling the weld joint part, dimensions between each end part 10A, 22A which is butted or superposed by a minute quantity to the tip part of an electrode 30A of a welding torch 30 are set large to ≥1.0mm, and ≥1.5mm desirably. COPYRIGHT: (C)1992,JPO&Japio ...

METHOD AND DEVICE FOR JOINING METALLIC STRIPS

PURPOSE: To improve the strength of the joint of metallic strips by positioning the corner part of a projected line part at the neighborhood of the thickest part of a welded joint and rolling the welded joint. CONSTITUTION: A rolling roller 12 is moved finely in the axial direction so that the corner part 12C of the projected line part 12B is set on the upper part of the thickest part based on the position of the thickest part of the welded joint 32 of the metallic strips 26 to be joined. The rolling roller 12 is rolled down by a cylinder 20 to press and fix and metallic strips 26. Then, when a motor 18 is drawn, rotation is transmitted to the rolling roller 12 and rolling is performed in such a state that the central part to be rolled is inserted between the corner part 12C of the projected line part 12B and a back bar 14. The central part to be rolled is rolled by the projected line part 12B as it is held by a retaining part 12A. In this way, even when a narrow range is rolled selectively ...

MANUFACTURE OF SUPPORTING BODY FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To reduce the unevenness of a supporting body and to improve the yield of electrolytic surface roughening treatment by specifying manufacturing condition, in the manufacturing method, in which Al molten metal is continuous ly cast and directly rolled with a twin-roll, and successively cold-rolled, heat- treated and straightened. CONSTITUTION: An ingot is melted and held in a furnace 1 and fed by adjusting its temp to 660-760°C just before a twin roll type continuous casting apparatus 2. Further, the sheet thickness after continuous casting and directly rolling is made to be 6.0-8.0mm and wound into a coiler 3. Thereafter, the cold-rolling mill 4 is applied to this sheet to make the thickness 3-5 times that of the finish thickness, and successively, the induction heating type first heat treatment process 5 is applied and this sheet is heated to 400-650°C at ≥50°C/sec temp. raising rate. Contenuously, the second heat treatment process 6 is applied at ≤10°C/sec temp. raising rate ...

SUBSTRATE FOR LITHOGRAPHIC PRINTING PLATE AND MANUFACTURING METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a substrate for a lithographic printing plate which is constituted of an aluminum material or an aluminum alloy material and has the rear free of a fault called streaky unevenness and excellent in the quality of external appearance. SOLUTION: An aluminum sheet of which the standard deviation of the surface oxygen concentration in an aluminum surface expressed by the formula (1) is 15 or less, or an aluminum sheet of which the ratio between the oxygen concentration in the surface and the oxygen concentration in a part at 1 μm from a surface layer satisfies the condition of the formula (2), wherein the former is denoted by [O]s and the latter by [O]i, and of which the standard deviation of the surface oxygen concentration is 15 or less, is made to have a roughened surface and subjected to anodizing treatment. Standard deviation of surface oxygen concentration = Σ √(surface oxygen concentration n -surface average oxygen concentration)2/n...(1) [O]s/[O]i≤1.2 ...

PRODUCTION OF BASE FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To provide the process for production of the base for planographic printing which decreases the variations in the material of an aluminum base, improves the yield of an electrolytic surface roughening treatment, has excellent adaptability to surface roughening, does not generate stripe unequalness and has excellent appearance. CONSTITUTION: A symbol 1 in the caption is a melting and holding furnace where ingots are melted and held. The molten metal is sent from this furnace to a twin roll continuous casting device 2. Namely, a hot rolled coil of a sheet of 4 to 30mm is directly formed from molten aluminum. The sheet is coiled by a coiler 3. The sheet is reduced in thickness to 60 to 95% by a cold rolling mill or is formed to the sheet of 0.3 to 3.0mm substantial thickness. In succession, the sheet is subjected to a heat treatment stage and is annealed for 8 to 12 hours at 260 to 300° or is further subjected to annealing for 1 to 600 seconds at 500 to 660°C in combination; thereafter ...

METHOD AND DEVICE FOR JOINING BAND-LIKE METALLIC PLATE

PURPOSE: To execute rolling being free from contraction and fold by holding a band-like metallic plate by a holding part of a first radius of a joining part and a holding part of a roller consisting of a projecting line part of a second radius being larger by specific multiple of plate thickness than a first radius and rolling a joing surface by the projecting line part. CONSTITUTION: As for a band-like metallic plate 26, the center part to be rolled is held and fixed to a table 10 positioned on a back bar 14 by a holding jig 28. A rolling roller 12 is brought to rolling reduction by a cylinder 20 and fixes the band-like metallic plate 26 by strong pressure. A second radius of a projecting line part 12B is larger by 0.1-5.0 times of plate thickness of a material to be rolled than a first radius of a holding part 12A. By driving a motor 18, a rolling roller is rotated through a gear 24A, a chain 22 and a gear 24B and rolling is executed between the projecting line part and the back bar 14 ...

MANUFACTURE OF SUPPORTING BODY FOR PLANOGRAPHIC PRINTING

PURPOSE: To obtain a supporting body for planographic printing in which variance is reduced of the material for an aluminum supporting body, the yield of electrolytic roughening treatment is improved, and a planographic printing plate is made whose picture quality after the roughening is excellent and the yield is superior. CONSTITUTION: A roughening treatment is applied on the aluminum supporting body which continuously cast in a planar shape directly by a belt method 2 from the molten aluminum and on which hot rolling 3, cold rolling 5 and heat treatment 6 performed once or more and also straightening 7 is performed. The contents of Fe is 0.4% to 0.2%; those of Si is 0.20% to 0.05%; those of Cu is 0.002% to 0.02%; the purity of Al is 99.5% or higher; the crystal grain size D of the aluminum plate 8 after the continuous casting and hot rolling is 5μm to 50μm in the cross-section 8a vertical to the advancing direction of the casting; and also, the crystal grain size D of the aluminum plate ...

METHOD FOR MANUFACTURING SUPPORT FOR LITHOGRAPHIC PRINTING PLATE

(57)【要約】 【課題】 印刷条件の変動に依らず、非画像部に汚れを 発生させない。 【解決手段】 アルミニウム材もしくは、アルミニウム 合金材を粗面化処理し、塩酸を１重量％以上５重量％未 満含む水溶液に１０秒以上３分以下浸漬し、次いで陽極 酸化処理することを特徴とする平版印刷版用支持体の製 造方法。

PRODUCTION OF LITHOGRAPHIC PRINTING SUBSTRATE

PURPOSE: To stably produce a low-cost lithographic printing substrate having little occurrence of stepped unevenness and a superior face quality after being roughened by a method wherein an aluminum casting material contains Fe, Si, and Al respectively by a specific ratio, and in a continuously casted and rolled plate a ratio of a concentration distribution difference of alloy components in a rolling direction to that in a plate width direction is specified. CONSTITUTION: In the production of a lithographic printing substrate, an aluminum casting material contains 0-0.20wt.% Fe, 0-0.10wt.% Si, 99.7wt.% or more Al, and the casting material is rolled so that in a continuously casted and rolled plate a ratio of a concentration distribution difference of alloy components in a rolling direction 10a to that in a plate width direction 10b is 0.2-5. Additionally, the aluminum casting material also contains 0-0.05wt.% Cu and 0-0.05wt.% Ti. For imparting superior characteristics as a lithographic ...

Method and device for manufacture of lithographic printingblock bearing body

JOINING DEVICE FOR BAND-SHAPED METALLIC SHEET

PURPOSE: To improve the strength at the center in the welded joint part of band-shaped metallic sheets and to prevent the burn-through at both ends of the joint part by forming respective recesses to the center of the opposite surfaces of the clamps of clamping members which press and fix the band-shaped metallic sheets. CONSTITUTION: The front end 10A of the succeeding band-shaped metallic sheet 10 and the rear end 22A of the preceding band-shaped metallic sheet 22 are first cut by cutter blades 20, 20 of a precutting device 18. The front end 10A of the band-shaped metallic sheet 10 and the rear end 22A of the band-shaped metallic sheet 22 are superposed slightly on the front surface of a back bar 31. Cylinders 29... are then extended and the band-shaped metallic sheet 10 is pressed and fixed by the clamps 26. The band-shaped metallic sheet 22 is pressed and fixed by the clamps 28. The slightly superposed parts of the band-shaped metallic sheets are then welded and joined by a welding ...

SUPPORTING BODY FOR PLANOGRAPHIC PRINTING PLATE AND MANUFACTURE THEREOF

PURPOSE: To provide a supporting body for planographic printing plate and a manufacturing method thereof, in which the unevenness of material of an aluminum supporting body is reduced and the yield at the time of executing electrolytic surface roughening treatment is improved and the supporting body having excellent suitability to surface roughening and outward appearance without developing stripe flaw is obtd. CONSTITUTION: The aluminum sheet having 7.3mm thickness is formed with a twin roll continuous casting apparatus 2 and successively, the cold-rolling is executed to 0.5mm thickness with a cold-rolling mill 4. Successively, this aluminum thin sheet is passed to a heat treatment process 5 and the heat treatment is executed so as to form at least the part having no recrystallization on the surface layer to 15μm in the thickness direction. If necessary, the finish rolling can again apply to the cold-rolling mill and thereafter, a straightening device is applied. COPYRIGHT: (C)1994,JPO ...

JOINING DEVICE FOR BELTLIKE METAL PLATES

PURPOSE: To miniaturize the device and to improve precision of joining by providing an inlet side suction table and an outlet side suction table capable of sucking ends of belt like metal plates on a movable supporting base. CONSTITUTION: The end of a succeeding beltlike metal plate 18 is sucked by the inlet side suction table 44 and the supporting base 40 is moved up to the position of a cutting device 20 to precut the end of the metal plate 18. The end of a preceding beltlike metal plate 16 is then sucked by the outlet side suction table 42 and the supporting base 40 is moved up to the position of the cutting device 20 to precut the end of the metal plate 16. After cutting, both suction tables 42 and 44 are moved on the supporting base 40 and the tips 16a and 18a of the metal plates 16 and 18 are abutted or superposed slightly on each other. In this state, the supporting base 40 is moved up to welding equipment 22 to perform joining and welding. The supporting base 40 is moved up to a ...

Method and device for manufacture of lithographic printingblock bearing body

PRODUCTION OF SUBSTRATE FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To provide the planographic printing plate having a favorable electrolytic surface roughening property and excellent mechanical strength and appearance. CONSTITUTION: The caption number 1 denotes a melting and holding furnace where ingots are melted and held. The molten metal is sent from this furnace to a twin roll continuous casting device 2. Namely, a hot rolled coil of a sheet of 4 to 30mm is formed directly from the aluminum melt. This sheet is coiled by a coiler 3. The coil is thereafter rolled by a cold rolling mill 4, by which its thickness is reduced to 0.3-3.0mm. The rolled sheet is in succession treated by a heat treating stage (induction heating system) 5 and is subjected to two passes of intermediate annealing for 1-600 seconds at 500-660°C and is again rolled by the cold rolling mill 4 as the final rolling, by which the thickness is reduced to 0.1-1.0mm. The sheet is thereafter straightened by a straightening device 6. The sheet material obtd. in such a manner is ...

METHOD FOR JOINTING STRIP METAL

PURPOSE: To prevent the development of crack at joined part by specifying welding velocity in weld joining between Al alloy strip metal end parts having the specific chemical composition. CONSTITUTION: In the case of weld-joining the strip metal 10 containing Al as the essential component and ≥0.1% Mg component or Mn component, the welding velocity of TIG welding or high frequency pulse arc welding is set to ≤3m/min at neighbor hood of the side edge in the joining part of strip metal and ≥5m/min at neighborhood of the center part to execute the welding between the strip metals. By this method, both side edges and center part in the connecting part can be almost uniformly weld-joined and the development of crack can be prevented. COPYRIGHT: (C)1991,JPO&Japio ...

DEVICE FOR JOINING BAND-SHAPED METALLIC SHEET

PURPOSE: To prevent the generation of holing and unwelded parts which are the cause for the degradation in the strength of the joint part of band-shaped metallic sheets by forming the pressing surfaces of clamping members which press the band-shaped metallic sheets as rough surfaces. CONSTITUTION: The front end 10A of the succeeding band-shaped metallic sheet 10 and the rear end 22A of the preceding band-shaped metallic sheet 22 are first cut by cutter blades 20, 20 of a precutting device 18. The front end 10A of the band-shaped metallic sheet 10 and the rear end 22A of the band-shaped metallic sheet 22 are superposed slightly on the front surface of a back bar 31. Cylinders 29,... are then extended and the band-shaped metallic sheet 10 is pressed and fixed by the clamps 26. The band-shaped metallic sheet 22 is pressed and fixed by the clamps 28. The slightly superposed parts of the band-shaped metallic sheets are then welded and joined by a welding torch 30. The bottom ends of the clamps ...

METHOD FOR JOINING BELTLIKE SHEET METAL

PURPOSE: To suppress the influence of heat given to the title beltlike sheet metals to the minimum by specifying the welding time of high-frequency pulse arc welding, and welding and joining the Al alloy beltlike sheet metals having specific sheet thickness to each other and rolling a welded and joined part. CONSTITUTION: At the time of welding and joining the jointing part between the Al alloy beltlike sheet metals 10 and 22 having 0.1-0.5mm sheet thickness by using a single welding torch 30, the welding speed is set at ≥5m/min. A rolling device 32 is provided at the rear stage of welding device 24 and a rolling roll 34 of the rolling device 32 rolls the welded and joined part between the beltlike sheet metal ends 10A and 22A. By this method, the influence of heat given to the beltlike sheet metals can be suppressed to the minimum and a recrystallized part of the beltlike sheet metals after welding can be reduced and the rupture of the beltlike sheet metals at the time of turning is prevented ...

JOINING DEVICE FOR BAND-SHAPED METALLIC SHEET

PURPOSE: To surely join the butt parts of band-shaped metallic sheets to each other by providing a bypass circuit which is disposed in parallel with a welding means for joining the ends of the band-shaped metallic sheets to each other and controls the welding current flowing in the welding means and a means for making on-off control of the bypass circuit. CONSTITUTION: A part of the current from a three-phase AC power source flows through the bypass circuit 44 and the welding current falls when a switch 44B is turned on via a control circuit 36 by the command from a current program circuit 38 when a torch 30 arrives at a point A. The switch 44B is turned off by the control of a control circuit 36 when the torch 30 arrives at a point B. The current no longer flows in the bypass circuit 44 and the welding current flowing in the torch 30 increases. The switch 44B is turned on and the welding current decreases when the torch 30 arrives at a point C. The low welding current is passed at both ...

PRODUCTION OF SUPPORTING BODY FOR PLANOOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To produce a supporting body for a planographic printing plate at a low cost while its required performance is maintained by subjecting Al molten metal to continuous casting and rolling by twin rolls, thereafter subjecting it to hot rolling at a specified temp. and a specified draft and furthermore executing cold rolling, heat treatment and modification. SOLUTION: An ingot is melted by a melting holding furnace 1, and the molten metal of Al heated at about 700°C is fed to a twin roll continuous casting device 2, where the molten metal is continuously subjected to rolling while it is cooled and solidified. The obtd. twin roll continuously cast plate 7b is passed through hot rolling rolls 9 while being heated at 300 to 600°C by a heating device 8 and is rolled to reduce its thickness by 60 to 95%, and the obtd. hot rolled plate 7c is once coiled round a coiler 3. In such a way, the uniformization of the distribution of the elements and the structure in the hot rolled ...

METHOD AND DEVICE FOR JOINING BAND-LIKE METALLIC PLATE

PURPOSE: To prevent a hole from being made in a joint part at the time of welding and to improve the strength of the joint part by rewinding a band-like metallic plate wound round, from a core, straightening a winding way of an end part of the band-like metallic plate, superposing each end part by a minute quantity and welding and joining them. CONSTITUTION: A band-like metallic plate 10 is rewound from a roll 12 and carried to a joining device 16. A tip part 10A of the metallic plate 10 is cut by a pre-cutting device 18, and formed so that it can be superposed by a minute quantity to a rear end part 22A of a band-like metallic plate 22. A straightening roller 32 is provided on the left side and the right side, respectively of clamps 26, 28 in the drawing and straightens a winding way of the end parts 10A, 22A by moving in the right and the left directions. The straightened end parts 10A, 22A are superposed exactly by a set quantity, and held by the clamps 26, 28 in this state. Subsequently ...

JOINING METHOD OF STRIP-SHAPED METAL SHEETS WHOSE SURFACES ARE COATED WITH PHOTOSENSITIVE LIQUID

PURPOSE: To provide a welding method of strip-shaped metal sheets whose surface are coated with the photosensitive liquid in such a manner as applicable to any welding method without generating any coating stripes. CONSTITUTION: When joining is executed in the condition where a succeeding member 2 is piled upon a preceding member 1, a part to be joined 3 has two stepped parts 4, 5. The part to be joined 3 is provided with a pressure adhesive double coated tape zone 6 and an ultrasonic-joining zone 7, and the stepped parts 4, 5 are rolled by a tapered roller in the tapered surface not exceeding 20°. In the case of the butt welding or the lap welding where the preceding member 1 and the succeeding member 2 are welded at the part to be joined 3, the part to be joined 3 consists of heat-affected zones 81, 82 and a fusion zone 9, and for the stepped parts, the tapered part not exceeding 20° is obtained by rolling the steeped parts by the tapered roller. COPYRIGHT: (C)1993,JPO&Japio ...

METHOD AND DEVICE FOR JOINING BAND-LIKE METALLIC PLATE

PURPOSE: To decrease the generation of perforation of a junction by placing a band-like metallic plate end part on a step difference part of a back bar in which a step difference being equal to plate thickness of the band-like metallic plate is formed, superposing other metallic plate end part thereon by a minute quantity and welding and joining them. CONSTITUTION: Each end part of band-like metallic plates 10, 22 is superposed on each other by a minute quantity and welded and joined. In this case, a step difference part (step difference quantity l) being roughly equal to plate thickness of the band-like metallic plate 10 superposed to the lower side is formed in a back bar 31. Subsequently, an end part 10A of one band-like metallic plate 10 is placed thereon, an end part 22A of the other metallic pate 22 is superposed on this end part 10A by a minute quantity and each band-like metallic plate 10, 22 is welded and joined by an electrode 30A of a welding touch 30. In such a way, warp of ...

METHOD FOR JOINING BAND-SHAPED METALLIC SHEET

PURPOSE: To prevent the deposition defect at the center of the welded joint part of band-shaped metallic sheets by setting the welding speed at the center of the welded joint part lower than the welding speed at both ends thereof. CONSTITUTION: The front end 10A of the band-shaped metallic sheet 10 is clamped in clamps 26 and the rear end 22A of the band-shaped metallic sheet 22 is held in clamps 28. The front end 10A and the rear end 22A are slightly superposed on each other. The slightly superposed part 31 is welded by a welding torch 30. The welding speed between the points A and B at one end of the slightly superposed part 31 is set at V1, the welding speed between the points B and C at the center of the slightly superposed part is set at V2 and further, the welding speed between the C and D at the other end of the slightly superposed part 31 is set at V1. The welding speed V2 is set lower than V1 and welding currents are set constant over the entire range of X1, X2 and X3. The welding ...

JOINING METHOD FOR STRIPLIKE METAL PLATE

PURPOSE: To improve the joining strength of a welding junction part by arranging the end part of a striplike metal plate in opposition, providing an alloy filler metal to a joining part as well and rolling the joining part after welding the striplike metal plate. CONSTITUTION: The joining device 16 of a striplike metal plate is composed of a precut device 18, welding equipment 24 and rolling device 32. The striplike metal plate 12 rewound from a roll 12 is cut by the precut device 18 and abutted to the rear end part 22A of a preceding striplike metal plate 22. A filler metal 31 is formed by the metal composing metal plates 10, 22 and the alloy contg. the elements excepting it, arranged at the abutting part of the metal plates 10, 22 and the welding is executed. The welding junction part of the metal plate end parts 10A, 22A is rolled in the rolling device 32 to eliminate the step difference. The joining strength of the joining part is improved because the striplike metal plates 10, 22 are ...

METHOD FOR CONTINUOUSLY CASTING PLATE MATERIAL AND APPARATUS THEREFOR

PROBLEM TO BE SOLVED: To form a plate material so as not to develop a ripple mark. SOLUTION: An apparatus 10 is constituted so that a pair of rotating rolls 22A, 22B are arranged vertically at a prescribed gap (W) and a nozzle 24 is arranged at the inlet side of the gap W and the plate material 12 is produced by feeding out the molten metal 14 from the outlet side of the gap (W) while cooling the molten metal 14 spouted to the gap (W) from the nozzle 24 with the rotating rolls 22A, 22B. In such a case, since the tip part of the nozzle 24 has the outside surface of the tip part inclined at an acute angle to the spouting direction of the molten metal 14, the molten metal 14 spouted from the nozzle 24 forms a fixed meniscus. Therefore, no ripple mark is developed on the surface of the plate material 12. COPYRIGHT: (C)1998,JPO ...

BASE FOR PLANOGRAPHIC PRINTING PLATE AND PRODUCTION THEREOF

PURPOSE: To provide a base for a planographic printing plate which has decreased variation in the material quality of an aluminum base, has a high yield of an electrolytic surface roughening treatment, is excellent in the evaluation of the stripe-like unequalness and streak of the electrolytically roughened surface and has excellent mechanical strength. CONSTITUTION: An aluminum melt is directly continuously cast and rolled to a sheet form and thereafter, this sheet is subjected to cold rolling and heat treating to cause recrystallization over a range within 20% of the entire sheet thickness from the surface layer thereof, by which the base for the planographic printing plate is obtd. COPYRIGHT: (C)1995,JPO ...

SUPPORT FOR LITHOGRAPHIC PRINTING PLATE, ITS PRODUCTION METHOD, AND ORIGINAL PLATE FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To obtain a support for a lithographic printing plate excellent in stern ink scumming properties even when the severe schedule control of an aluminum plate is not implemented. SOLUTION: In the support for the lithographic printing plate having the abundance ratio per unit area of an Fe Si intermetallic compound, etc., existing within 10 μm from the surface layer of 0.5% or below, the aluminum plate having an aluminum content of at least 99 wt.% and the abundance ratio per unit area of the Fe Si intermetallic compound or a Si deposit existing within 10 μm from the surface layer of at least 1% is washed with an acidic washing liquid which contains sulfuric acid of a concentration of 300-800 g/liter and the temperature of which is 65-90°C and subjected to anodic oxidation treatment to form an oxide film on anode. A method for producing the support for the lithographic printing plate and an original plate for the lithographic printing plate are provided. COPYRIGHT: (C) ...

ALUMINUM ALLOY BASE FOR PLANOGRAPHIC PRINTING PLATE

PURPOSE: To produce an Al base for planographic printing having excellent electrolytic rough surface treatment efficiency after final cold rolling by forming molten Al to a planar form by rapid cooling with a twin roll type continuous casting machine, then subjecting the planar Al to cold rolling, intermediate annealing and the final cold rolling. CONSTITUTION: The molten Al in a melting and holding furnace 1 is supplied to the twin roll type continuous casting machine 2 and is subjected to rolling simultaneously with rapid cooling and solidifying by rolls. The rolled sheet is taken up as a hot rolled coil 3 having a thickness of 4 to 12mm. Next, this hot rolled coil is rolled to an Al sheet material having a thickness of 0.3 to 3.0mm by a cold rolling mill 4 and after the Al sheet is subjected to continuous intermediate annealing in a heat treating furnace, the Al sheet is further cold rolled to the Al sheet having a thickness of 0.1 to 0.5mm; thereafter, the flatness of the Al sheet is ...

METHOD AND DEVICE FOR JOINING BELTLIKE METAL PLATES

PURPOSE: To prevent the occurrence of hole by foreign matter burning and to improve the quality by sucking and removing dust, etc., along a joining part to be welded between beltlike metal plates and then, welding and joining the joining part. CONSTITUTION: The tip 10A of a beltlike metal plate 10 is superposed slightly on a rear end 22A of a beltlike metal plate 22 and the tip 10A and the rear end 22A are fixed by a clamp on a back bar 44. A high-frequency pulse arc is then generated from an electrode 30A of a welding torch 30 and compressed air is supplied to a supply pipe 38 and a suction nozzle 32 is allowed to generate suction force and further, as necessary, the compressed air is blown out from a blowout nozzle 34. When a traveling unit 36 is moved in the right direction, the foreign matter such as dust fixed on the slightly superposed part of the tip 10A and the end 22A is blown off and sucked by the suction nozzle and then, arc welding can be carried out. By this method, a weld ...

SUPPORT FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To provide a support for a lithographic printing plate to be used as an original plate for the lithographic printing plate showing outstanding resistance to dirt and plate wear when the plate is obtained. SOLUTION: The support for a lithographic printing plate is manufactured by roughening the surface of an aluminum sheet and oxidizing an anode, then making the sheet hydrophilic in an aqueous alkali metallic silicate solution with a concentration of 0.6 to 5.0 mass%, and treating the sheet in an aqueous solution containing carboxylic acid and/or carboxylate. COPYRIGHT: (C)2004,JPO ...

MANUFACTURE OF SUPPORTING BODY FOR LITHOGRAPHIC PRINTING PLATE

PROBLEM TO BE SOLVED: To restrain the generation of streaks of picture which appear continuously or intermittently in the rolling direction of an aluminum plate at the time of manufacturing a supporting body for a lithographic printing plate. SOLUTION: Aluminum is melted and the molten metal is fed between a pair of cooling rolls from a molten metal feeding nozzle 3 wherein a release agent which contains aggregate particles of particle size distribution of 5 μm-20 μm in median diameter and 4 μm-12 μm in mode diameter is coated on the inner surface coming into contact with molten metal 2, and the molten aluminum is continuously poured and rolled into a aluminum plate. Thereafter, either of cold rolling or heat treatment or both of them are applied one time or more to make an aluminum thin plate of 0.1 mm-0.5 mm thickness, flatting is further applied to make the aluminum supporting body, and roughening is applied to manufacture the supporting body for the lithographic printing plate. COPYRIGHT ...

Method of producing planographic printing plate support

A method of producing a planographic printing plate support in which after aluminum is continuously cast directly from molten aluminum into a thin aluminum plate, the aluminum thin plate is subjected to cold rolling, heat treatment and flattening to obtain an aluminum support. The aluminum support is then subjected to surface toughening. The components of the aluminum support are Fe: 0.4%-0.2%, Si: 0.20%-0.05%, Cu: not larger than 0.02%, and the Al purity is not smaller than 99.5%. After continuous casting, Fe in a range of from 20% to 90% of the Fe total content exists in a grain boundary and the rest of Fe exists as a solid solution in grains. In this case, it is preferable that in a section perpendicular to the direction of continuous casting, the grain size is in a range of from 2 μm to 500 μm.

Method of splicing webs

A method of splicing together leading and following webs which are delivered successively. In the splicing method, when the leading and following webs are different in shape or material from each other, there is interposed between the leading and following webs a dummy web for increasing the strength of splicing of the webs. Also, when the leading and following webs are welded and spliced togethr, the two webs are in part lapped on each other and the lapped portions thereof are cut inclined with respect to the width direction of the webs. After waste materials produced from the cutting are removed, the ends of the webs are butted against each other or slightly lapped on each other and are then welded together. A welded and spliced portion, which includes a fusion portion and a recrystallized portion produced due to heat during welding, is formed such that a difference between the web thickness of the recrystallized portion and the thickness of the adjoining portions of the recrystallized portion is within ±30%.

Method for splicing metal webs

Method and apparatus for splicing together metal webs (26) with the ends thereof being butted against each other or slightly lapped on each other. In the metal web splicing apparatus, there is provided a reduction roller (12) which comprises a hold portion (12A) having a first radius and a projected portion (12B) having a second radius slightly greater than the first radius. With use of the reduction roller (12), while both sides of the weldedly spliced portion of the metal webs (26) are being held and fixed by the hold portion (12A) of the roller (12), and weldedly spliced portion is rolled by the projected portion (12B) of the roller (12), thereby preventing escape of the rolled portion.

Support for lithographic printing plate and presensitized plate and method of producing lithographic printing plate

Disclosed is a support for a lithographic printing plate, wherein an adhering amount of a rare-earth element atom to a surface thereof is 0.1 to 20 mg/mg 2 , and a presensitized plate provided with an image recording layer on the support for a lithographic printing plate. The presensitized plate achieving both high scum resistance and long press life can be realized, which is the same in the case the image recording layer containing an infrared absorbent, where scum would easily occur, is provided onto the support.

Support for a planographic printing plate and method for producing same

A support for a planographic printing plate in which variations in the quality of the material of the aluminum support are reduced to thereby improve the yield in an electrolytic graining treatment and which is excellent in susceptibility to graining, has no stripe irregularities, and excellent appearance, and a method for producing such a planographic printing plate. An aluminum plate material is formed through a twin-roller continuous casting apparatus and subjected to cold rolling. Successively, the plate is subjected to heat treatment so as to form a surface portion of a depth of at least 15 µm in the thickness direction having no recrystallization in the surface layer. If necessary, the plate may be subjected to cold rolling again as final rolling. Thereafter, the plate is subjected to correction.

Method and apparatus for splicing metal webs

Method and apparatus for splicing together the ends of metal webs by TIG welding. In the method and apparatus, since the tapered end portion of an electrode disposed at the leading end of a welding torch for use in TIG welding is formed in a semi-spherical shape or in a circular flat surface, arc can remain stable even if the length of the arc in the TIG welding is changed suddenly at the welding starting or terminating end portion of the weldedly spliced portion of the metal webs.

Method and apparatus for splicing metal webs

Method and apparatus (16) for splicing together the ends (10A, 22A) of metal webs (10, 22) by TIG welding. In the method and apparatus (16), since the tapered end portion of an electrode (30A) disposed at the leading end of a welding torch (30) for use in TIG welding is formed in a semi-spherical shape or in a circular flat surface, arc can remain stable even if the length of the arc in the TIG welding is changed suddenly at the welding starting or terminating end portion of the weldedly spliced portion of the metal webs (10, 22).

Lithographisches druckplattensubstrat und vorsensibilisierte platte und herstellungsverfahren für eine lithographische druckplatte

Verfahren zum herstellen eines flachdruckplattenträgers

堆積物微生物燃料電池を用いた底質改善方法及び底質改善装置

【課題】堆積物微生物燃料電池由来の電力を有効活用し、底質改善の対象となる閉鎖性水域に安定的に酸素を供給して溶存酸素濃度を高めることにより、堆積物微生物燃料電池の動作を安定させると共に、広範囲の閉鎖性水域の底質を確実かつ効率的に改善することができる実用性及び省エネルギー性に優れた堆積物微生物燃料電池を用いた底質改善方法及び底質改善装置を提供する。【解決手段】複数の堆積物微生物燃料電池１０を有する発電部２１と、複数のコンデンサ２２を有する充放電昇圧部２３と、モータ駆動式の曝気用ポンプ１９と、充放電昇圧部２３を制御する制御部２５とを備え、制御部２５は、発電部２１による充放電昇圧部２３への充電と、充放電昇圧部２３による曝気用ポンプ１９への放電を切替えて、曝気用ポンプ１９により直上水を間欠的に曝気する。【選択図】図２

Flachdruckplattenträger und sein herstellungsverfahren

平版印刷版用支持体の製造方法

(57)【要約】 【課題】 平版印刷版用支持体製造時にアルミニウム板 の圧延方向に連続的又は断続的に出現するスジ状の面質 欠陥の発生を抑制する。 【解決手段】 アルミニウムを溶解し、メジアン径が５ μｍ〜２０μｍでモード径が４μｍ〜１２μｍの粒度分 布で骨材粒子を含む離型剤を溶湯に接する内表面に塗布 した溶湯供給ノズルから一対の冷却ロール間にアルミニ ウム溶湯を供給して板状のアルミニウムを連続鋳造圧延 した後、冷間圧延、熱処理の何れか又は両方を１回以上 行なって厚さ０．１ｍｍ〜０．５ｍｍのアルミニウム薄 板を作り、さらに矯正を行なってアルミニウム支持体と し、粗面化して平版印刷版用支持体を製造する。

Flachdruckplattenträger und sein Herstellungsverfahren