Electrophotographic lithographic printing plate precursor
    2.
    发明授权
    Electrophotographic lithographic printing plate precursor 失效
    电子照相平版印刷版前体

    公开(公告)号:US5424155A

    公开(公告)日:1995-06-13

    申请号:US983517

    申请日:1993-04-21

    CPC分类号: G03G13/28 G03G15/28 G03G5/10

    摘要: The present invention aims at, in an electrophotographic lithographic printing plate precursor, improving the construction and composition of back layers and in particular, preventing occurrence of printing scum by rubbing and increasing the number of prints until printing wrinkles occur. The feature of the present invention consists in an electrophotographic lithographic printing plate precursor comprising, at least, a photoconductive layer on one surface of a base and a back layer on the other surface thereof, in which the back layer comprises an outermost layer containing a hydrophilic high molecular material and an innerlayer having a Cobb's water absorbing capacity of at most 25 g/m.sup.2 (45 minute value).

    摘要翻译: PCT No.PCT / JP92 / 00815 Sec。 371日期:1993年4月21日 102(e)日期1993年4月21日PCT提交1992年6月26日PCT公布。 出版物WO93 / 00615 日本1993年1月7日。本发明的目的在于,在电子照相平版印刷版原版中,改善背层的结构和组成,特别是通过摩擦和增加打印数量直到印刷皱纹发生时产生印刷浮渣 。 本发明的特征在于电子照相平版印刷版原版,其至少包括在基底的一个表面上的光电导层和在另一个表面上的背层,其中背层包括含有亲水性的最外层 高分子材料和Cobb吸水能力至多为25g / m 2(45分钟值)的内层。

    Electrophotographic lithographic printing plate precursor
    3.
    发明授权
    Electrophotographic lithographic printing plate precursor 失效
    电子照相平版印刷版前体

    公开(公告)号:US5378564A

    公开(公告)日:1995-01-03

    申请号:US21682

    申请日:1993-02-24

    IPC分类号: G03G5/14

    CPC分类号: G03G5/142 G03G5/144

    摘要: An electrophotographic lithographic printing plate precursor capable of well maintaining both the electrophotographic properties and the printing properties is provided, which comprises, at least, a photoconductive layer on one side of a support and an under layer directly under the photoconductive layer, in which the under layer consists of a plurality of layers comprising an outermost layer having a surface resistivity of at most 1.times.10.sup.11 .OMEGA. and an inner layer having a Cobb's water absorbing capacity of at most 15 g/m.sup.2 (45 minute value) or having a Young's Modulus of at most 1000 kg/cm.sup.2.

    摘要翻译: 提供了能够良好地保持电子照相特性和印刷性能的电子照相平版印刷版原版,其至少包括在载体的一侧上的光电导层和直接在光电导层下的下层,其中下 层包括多个层,其包含具有至多1×10 11欧米茄的表面电阻率的最外层和具有至多15g / m 2(45分钟值)的Cobb吸水能力或至多具有至多杨氏模量的内层 1000 kg / cm2。

    Liquid developer for electrostatic photography

    公开(公告)号:US4618557A

    公开(公告)日:1986-10-21

    申请号:US763112

    申请日:1985-08-07

    IPC分类号: G03G9/12 G03G9/13

    CPC分类号: G03G9/131

    摘要: An liquid developer for electrostatic photography is described, comprising a carrier liquid having an electric resistance of at least 10.sup.9 .OMEGA..multidot.cm and a dielectric constant of not more than 3.5, and a resin dispersed therein, said resin being obtained by polymerizing a monomer, which is soluble in said carrier liquid but becomes insoluble upon being polymerized, in the presence of at least one kind of a soluble dispersion stabilizing resin, said soluble dispersion stabilizing resin being a copolymer containing at least recurring units represented by following formulae (IIIa) and (IIIb) obtained by applying a reaction for introducing an unsaturated bond into a copolymer obtained by polymerizing a monomer represented by formula (I) and a monomer represented by formula (III) ##STR1## wherein in formula (I), V represents --O--, --S--, --CO--, --CO.sub.2 --, --SO.sub.2 --, --OCO--, --CONH--, --CONR'-- (wherein R' represents a hydrocarbon group), --NHCO--, NHCO.sub.2 --, or --NHCONH--; X represents --CO.sub.2 H, --COCl, --OH, --SH, --NH.sub.2, --NCO, or --SO.sub.2 CH.sub.2 CH.sub.2 Cl; W represents a hydrocarbon group linking said atomic group V and said atomic group X directly or through a hetero atom, or W represents a chemical bond; and a.sub.1, a.sub.2, and a.sub.3 each represents a hydrogen atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group;in formula (II), Y represents --O--, --S--, --CO--, --CO.sub.2 --, --SO.sub.2 --, --OCO--, CONH--, --CONR"-- (wherein R" represents a hydrocarbon group), --NHCO--, --NHCO.sub.2 --, or --NHCONH--; R represents a hydrocarbon group; and b.sub.1, b.sub.2, and b.sub.3 each represents a hydrocarbon atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group;in formula (IIIa), a.sub.1, a.sub.2, a.sub.3, V, and W have the same meanings as defined for formula (I); X' represents --CO.sub.2 --, --COS--, --SCO--, --CONH--, --OCO--, --NHCO--, --NHCONH--, --SO.sub.2 --, --O--, or --S--; Z represents a hydrocarbon group linking said atomic group X' and unsaturated bond directly or through a hetero atom, or Z represents a chemical bond; the total number of atoms of the main chain portion of atomic group --V--W--X'--Z-- must, however, be at least 9; and d.sub.1, d.sub.2, and d.sub.3 each represents a hydrocarbon atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group; andin formula (IIIb), b.sub.1, b.sub.2, b.sub.3, Y, and R have the same meanings as defined for formula (II).

    Method of making liquid developer for electrostatic photography
    5.
    发明授权
    Method of making liquid developer for electrostatic photography 失效
    制备静电摄影用液体显影剂的方法

    公开(公告)号:US4842975A

    公开(公告)日:1989-06-27

    申请号:US136517

    申请日:1987-12-22

    IPC分类号: G03G9/12 G03G9/13

    CPC分类号: G03G9/131

    摘要: A liquid developer for electrostatic photography is described, comprising at least a resin dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 ohms.cm and a dielectric constant of not more than 3.5. The resin is a copolymer resin obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble upon polymerization and at least one specified monomer (B) containing an aliphatic group having at least 8 carbon atoms and being copolymerizable with the monomer (A), in the presense of a resin not containing a grafting group polymerizable with the monomers and being soluble in the non-aqueous solvent. The resin may be colored by dissolving at least one organic dye in the dispersion of the resin and heating the mixture. The developer has excellent dispersion stability, redispersibility, fixability and preservability.

    摘要翻译: 描述了用于静电摄影的液体显影剂,其至少包含分散在电阻至少为109欧姆·厘米且介电常数不大于3.5的非水溶剂中的树脂。 树脂是通过聚合含有至少一种可溶于非水溶剂但在聚合时变得不溶的单官能单体(A)的溶液和至少一种含至少一个具有至少一个脂族基团的特定单体(B)的溶液而获得的共聚物树脂 8个碳原子并且可与单体(A)共聚,在不含可与单体聚合并可溶于非水溶剂的接枝基团的树脂的存在下。 树脂可以通过将至少一种有机染料溶解在树脂的分散体中并加热混合物而着色。 显影剂具有优异的分散稳定性,再分散性,定影性和保存性。

    Liquid developer for electrostatic photography
    7.
    发明授权
    Liquid developer for electrostatic photography 失效
    静电摄影用液体显影剂

    公开(公告)号:US4837102A

    公开(公告)日:1989-06-06

    申请号:US94612

    申请日:1987-09-09

    IPC分类号: G03G9/13

    摘要: A liquid developer for electrostatic photography comprising a carrier medium having an electrical resistivity of not less than 10.sup.9 106.cm and a dielectric constant of not more than 3.5 having dispersed therein at least a resin, wherein said resin is a copolymer resin obtained by copolymerizing (1) a solution containing at least one copolymer having an unsaturated bond obtained by copolymerizing at least one monomer (A) represented by formula (I) shown below and at least one monomer (B) represented by formula (II) shown below, and reacting the resulting copolymer with at least one monomer (C) represented by formula (III) shown below, (2) at least one monomer (D) which is soluble in the carrier medium but becomes insoluble upon polymerization, and (3) at least one monomer (E) represented by formula (IV) shown below to obtained a resin dispersion: ##STR1## wherein a.sub.1, a.sub.2 a.sub.3, b.sub.1, b.sub.2, b.sub.3, d.sub.1, d.sub.2, d.sub.3, e.sub.1, e.sub.2, e.sub.3, X, Y, V, Z, L, F, Q, G, R.sub.1, R.sub.2, R.sub.3, T.sub.1, T.sub.2, U, m and n are defined in the specification. The developer is excellent in redispersibility, preservability, stability, image reproducibility, and fixing properties and is capable of producing a master plate for offset printing having excellent printing durability.

    摘要翻译: 一种静电摄影用液体显影剂,其特征在于,具有电阻率为109×106.cm以上且介电常数不超过3.5的载体介质,其中至少分散有树脂,其中所述树脂是通过共聚( 1)含有至少一种具有不饱和键的共聚物的溶液,其通过使至少一种由下述式(I)表示的单体(A)和至少一种如下所示的式(II)表示的单体(B)共聚而获得, 所得共聚物与至少一种由下式(III)表示的单体(C),(2)至少一种可溶于载体介质但在聚合时变得不溶的单体(D),和(3)至少一种 (IV)其中a1,a2 + L,a3(Ⅳ)表示的单体(E),以获得树脂分散体:(ⅰ) ,b1,b2,b3,d1,d2,d3,e1,e2,e3,X,Y,V,Z,L,F,Q,G,R1,R2,R 3,T1,T2,U,m和n在说明书中定义。 显影剂具有优异的再分散性,保存性,稳定性,图像再现性和定影性,并且能够制造具有优异印刷耐久性的胶版印刷母板。

    Liquid developing method and apparatus for electrophotography, and
electrodes therefor
    8.
    发明授权
    Liquid developing method and apparatus for electrophotography, and electrodes therefor 失效
    用于电子照相术的液体显影方法和装置及其电极

    公开(公告)号:US5081499A

    公开(公告)日:1992-01-14

    申请号:US337224

    申请日:1989-04-12

    IPC分类号: G03G15/10

    CPC分类号: G03G15/10

    摘要: A liquid electrophotographic development method where electrodes are arranged only on the side of the photosensitive layer of a master, developing liquid is supplied between the master and the electrodes, and conductors are made to come into contact with the base of the master so that an electric field is generated between the photosensitive plane and the electrodes for development. The electrode to be used for the electrophotographic development method includes conductive wires of a plural number which are arranged in the direction perpendicular to the traveling direction of the material so as to come into contact with the conductive base thereof. If the electrodes are utilized, a main electrode needs to be arranged only on the side of the photosensitive layer of the master, and developing liquid is supplied therebetween. The electrode is adapted to come into contact with the conductive base of the master, to thereby generate an electric field between the main electrode and the electrode. Therefore, the master can be directly injected with electrons instead of indirect injection, and adhesion of toner scum which often was caused in the prior art can be avoided. This further eliminates the trouble of cleaning the electrodes to improve maintenance.

    摘要翻译: 液晶电子照相显影方法,其中电极仅布置在母版的感光层的一侧,显影液被供应在母体和电极之间,并且使导体与母版的基部接触,使得电 在感光平面和用于显影的电极之间产生场。 用于电子照相显影方法的电极包括多个导线,它们沿与材料的行进方向垂直的方向布置成与其导电基底接触。 如果使用电极,则主电极仅需要布置在母板的感光层的一侧,并且在其间供应显影液。 电极适于与母板的导电基底接触,从而在主电极和电极之间产生电场。 因此,主体可以直接注入电子而不是间接注入,并且可以避免在现有技术中经常引起的调色剂浮渣的粘附。 这进一步消除了清洁电极以改善维护的麻烦。

    Block copy material for lithographic printing plate material, lithographic press and lithographic printing method
    9.
    发明授权
    Block copy material for lithographic printing plate material, lithographic press and lithographic printing method 失效
    平版印刷版材料,平版印刷机和平版印刷方法的复印材料

    公开(公告)号:US06176182B1

    公开(公告)日:2001-01-23

    申请号:US09131700

    申请日:1998-08-10

    IPC分类号: B41N600

    CPC分类号: B41N6/00

    摘要: A block copy material for a lithographic printing plate material comprising a sheet-like substrate, on at least one side of which a plurality of minute projections are distributively formed, or a lithographic press having a plate cylinder, on a surface of which a plurality of minute projections are distributively formed, wherein the density of minute projections having a height of more than 40 &mgr;m is 20 projections/cm2 or less on surface average, and the density of minute projections having a height of 3 &mgr;m or more is 25 projections/cm2 or more on surface average. The block copy material for a lithographic printing plate material, the lithographic press and a lithographic printing method using the block copy material or the lithographic press can avoid the deterioration of the printing dimension and printing accuracy caused by strain partially developed in printing, and can solve the problem of conventional methods, the deterioration of the workability in printing.

    摘要翻译: 一种用于平版印刷版材料的块复制材料,其包括片状基底,其至少一侧上分布有多个微小凸起,或具有印版滚筒的平版印刷机,其表面上具有多个 分布形成微小突起,其中高度大于40μm的微小突起的密度在表面平均上为20个突起/ cm 2以下,高度为3μm以上的微小突起的密度为25个突起/ cm 2 或更多表面平均值。 用于平版印刷版材料的平版印刷材料,平版印刷机和使用块复制材料或平版印刷机的平版印刷方法可以避免印刷中部分显影的应变引起的印刷尺寸和印刷精度的劣化,并且可以解决 传统方法的问题,打印作业性的恶化。

    Plate material placement apparatus and method
    10.
    发明授权
    Plate material placement apparatus and method 失效
    板材放置装置及方法

    公开(公告)号:US06474236B1

    公开(公告)日:2002-11-05

    申请号:US09624774

    申请日:2000-07-25

    IPC分类号: B41F2706

    摘要: A plate making apparatus of a flexible plate material 13, 22 being placed on a plate cylinder 7 for executing planographic printing in multiple colors. The plate making apparatus has a cutter 23 being placed between a storage section 21 of a roll-like plate material and an exposure section 25 for cutting the roll-like plate material like a sheet and punch means 30 for making plate cylinder engagement holes 14a and 14b in the left and right margins of the plate material along the transport direction thereof, the plate cylinder engagement holes to be engaged in protrusions 7a an 7b disposed in the circumferential direction of the left and right margins of the plate cylinder. Accordingly, it is possible to provide a plate making apparatus which reliably holds a plate material on a plate cylinder for enabling planographic printing and can use a roll-like plate material.

    摘要翻译: 柔性板材13,22的制版装置放置在印版滚筒7上,用于执行多种颜色的平版印刷。 制版装置具有切割器23,其被放置在卷状板材料的存储部分21和用于切割片状的卷状板材的曝光部分25和用于制造印版滚筒接合孔14a和 14b在板材沿其输送方向的左右边缘处,印版滚筒接合孔被接合在印版滚筒的左右边缘的圆周方向上设置的突起7a,7b中。 因此,可以提供一种将板材可靠地保持在印版滚筒上以实现平版印刷并能够使用卷状板材的制版装置。