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    • 5. 发明授权
    • Process for producing lithographic printing plate
    • 平版印刷版生产工艺
    • US06207332B1
    • 2001-03-27
    • US08988282
    • 1997-12-10
    • Takao NakayamaShigeyuki DanRyousuke ItakuraHideyuki HattoriHiroshi Tashiro
    • Takao NakayamaShigeyuki DanRyousuke ItakuraHideyuki HattoriHiroshi Tashiro
    • G03G1302
    • G03G13/28G03G5/10G03G13/02Y10S430/102
    • A process for producing a lithographic printing plate which is inexpensive, is not elongated, can be readily handled and can provide a uniform image, is disclosed. The process comprises the steps of: using an original plate for lithographic printing comprising a support having a volume electric resistance of more than 1×1010 &OHgr;·cm, a conductive layer having a volume electric resistance of 1×105 &OHgr;·cm or less, provided on one surface of the support, and a photoconductive layer containing zinc oxide and a binder, provided on the conductive layer, conducting negative corona discharge from the side of the photoconductive layer of the original plate for lithographic printing, and during this corona discharge, contacting a conductor having earth potential with at least the support of the original plate, thereby charging the photoconductive layer of the original plate for lithographic printing.
    • 公开了一种制造廉价的未拉伸的平版印刷版的方法,可以容易地处理并且可以提供均匀的图像。 该方法包括以下步骤:使用原版平版印刷,其中包括体积电阻大于1×10 10欧米汞厘米的载体,具有体积电阻为1×10 5欧姆·厘米或更小的导电层,设置在一个表面上 的载体和包含氧化锌和粘合剂的光电导层,设置在导电层上,从用于平版印刷的原版的光电导层侧进行负电晕放电,并且在该电晕放电期间,接触具有接地的导体 至少具有原版支撑的电位,从而对原版的光电导层充电以进行平版印刷。
    • 8. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5106716A
    • 1992-04-21
    • US537723
    • 1990-06-14
    • Eiichi KatoHideyuki Hattori
    • Eiichi KatoHideyuki Hattori
    • G03G9/13
    • G03G9/131G03G9/133Y10S430/105
    • A liquid developer for electrostatic photography is disclosed. The liquid developer of this invention comprises resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA.cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are copolymer resin grains obtained by polymerizing a solution containing at least one mono-functional monomer (A) which is soluble in the above non-aqueous solvent but becomes insoluble in the non-aqueous solvent by being polymerized, in the presence a dispersion-stabilizing resin, which is soluble in the non-aqueous solvent and is composed of at least one recurring unit represented by the formulae (Ia) and (Ib) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 as defined in the specification.The liquid developer according to the present invention is excellent in redispersibility, storability, stability, image-reproducibility and fixability.
    • 公开了一种用于静电摄影的液体显影剂。 本发明的液体显影剂包含分散在电阻至少为10欧姆·厘米且介电常数不高于3.5的非水溶剂中的树脂颗粒,其中分散的树脂颗粒是通过聚合溶液获得的共聚树脂颗粒 含有至少一种可溶于上述非水溶剂的单官能单体(A),但在可溶于非水溶剂的分散稳定树脂存在下,通过聚合而变得不溶于非水溶剂, 并且由如本说明书中定义的至少一种由式(Ia)和(Ib)表示的重复单元由重均分子量为1×10 3至2×10 4组成。 根据本发明的液体显影剂在再分散性,保存性,稳定性,图像再现性和定影性方面都是优异的。
    • 9. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5041352A
    • 1991-08-20
    • US473535
    • 1990-02-01
    • Eiichi KatoKazuo IshiiHideyuki Hattori
    • Eiichi KatoKazuo IshiiHideyuki Hattori
    • G03G9/13
    • G03G9/131G03G9/133
    • A liquid developer for electrostatic photography comprising a resin dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA.cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin is a polymer resin obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the aforesaid non-aqueous solvent but become insoluble after being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the aforesaid non-aqueous solvent and at least one oligomer (B) having a number average molecular weight of not more than 1.times.10.sup.4 and having at least one polar group selected from a carboxy group, a sulfo group, a hydroxy group, a formyl group, an amino group, a phosphono group, and ##STR1## wherein R.sup.0 represents a hydrocarbon group or --OR.sup.1, (wherein R.sup.1 represents a hydrocarbon group) bonded to only one terminal of the main chain of a polymer composed of a recurring unit represented by following formula (II): ##STR2## wherein V.sup.1, R.sup.2, a.sup.1 and a.sup.2 are as defined in the specification. The liquid developer is excellent in dispersion stability, re-dispersibility, and fixability, and also is capable of forming an offset printing plate having excellent ink-receptivitiy for printing ink and excellent printing durability by electrophotography.
    • 一种用于静电照相的液体显影剂,其包含分散在电阻至少为10 9Ω·cm,介电常数不高于3.5的非水溶剂中的树脂,其中所述分散树脂是通过聚合含有 至少一种在可溶于上述非水溶剂的分散稳定树脂和至少一种低聚物的存在下,其可溶于前述非水溶剂但在聚合后变得不溶的单官能单体(A) B)数均分子量不大于1×10 4,并且具有至少一个选自羧基,磺基,羟基,甲酰基,氨基,膦酰基的极性基团, 其中R 0表示烃基或-OR 1(其中R 1表示烃基),其仅与由以重复单元表示的重复单元组成的聚合物的主链的仅一个末端键合 下式(II):其中V1,R2,a1和a2如说明书中所定义。 液体显影剂的分散稳定性,再分散性和定影性优异,并且还能够形成具有优异的用于印刷油墨的油墨接受性和通过电子照相术获得优异印刷耐久性的胶版印刷版。
    • 10. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5112718A
    • 1992-05-12
    • US535674
    • 1990-06-11
    • Eiichi KatoHideyuki Hattori
    • Eiichi KatoHideyuki Hattori
    • C08F299/00G03G9/13
    • G03G9/133C08F299/00Y10S430/105
    • A liquid developer for electrostatic photography is disclosed. The liquid developer comprises resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA. cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are polymer resin grains obtained by polymerizing a solution containing at least one kind of a mono-functional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble in the non-aqueous solvent by being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the non-aqueous solvent and is a comb-like copolymer comprising (1) at least a mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and (2) at least a monomer represented by formula (III) as defined in the specification.The liquid developer according to the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability.
    • 公开了一种用于静电摄影的液体显影剂。 液体显影剂包含分散在电阻至少为10Ω欧姆·厘米且介电常数不高于3.5的非水溶剂中的树脂颗粒,其中分散的树脂颗粒是聚合物树脂颗粒,其通过聚合至少包含至少 一种可溶于非水溶剂但通过聚合在不溶于非水溶剂的单官能单体(A)中,在可溶于非水溶剂的分散稳定树脂的存在下, 溶剂,并且是梳状共聚物,其包含(1)至少一种重均分子量为1×10 3至2×10 4的单官能大分子单体(M)和(2)至少由式(III)表示的单体,如 规格。 根据本发明的液体显影剂的再分散性,保存性,稳定性,图像再现性和定影性优异。