公开(公告)号：US5714289A

公开(公告)日：1998-02-03

申请号：US457604

申请日：1995-06-01

申请人： Eiichi Kato ,  Sadao Osawa ,  Seishi Kasai

发明人： Eiichi Kato ,  Sadao Osawa ,  Seishi Kasai

IPC分类号： G03G5/147 ,  G03G13/28

CPC分类号： G03G13/283 ,  G03G5/14786

摘要： A method for preparation of an electrophotographic printing plate which can provide a printing plate excellent in image qualities of plate-making and printing, and continuously produce such printing plates in a stable manner for a long period of time and which is suitable for a scanning exposure system using a laser beam. The method comprises forming a toner image by an electrophotographic process on a peelable transfer layer of an electrophotographic light-sensitive material which comprises an electrophotographic light-sensitive element a surface of which has releasability and the peelable transfer layer provided on the surface thereof which contains a thermoplastic resin capable of being removed upon a chemical reaction treatment, thermally transferring the toner image together with the transfer layer onto a support for a lithographic printing plate and removing the thermoplastic resin upon a treatment, for example, with an aqueous alkaline solution, whereby a printing plate is obtained.

摘要翻译： 一种电子照相印版的制备方法，其可以提供制版和印刷图像质量优异的印刷版，并且以长时间稳定的方式连续生产这种印版，并且适合于扫描曝光 系统使用激光束。 该方法包括通过电子照相方法在电子照相感光材料的可剥离转印层上形成调色剂图像，该电子照相感光材料的表面具有可释放性的电子照相感光元件和其表面上设置的可剥离转印层，其含有 能够在化学反应处理时被去除的热塑性树脂，将调色剂图像与转印层一起热转印到平版印刷版的载体上，并且例如用碱性水溶液处理除去热塑性树脂，由此 得到印版。

公开(公告)号：US06386104B1

公开(公告)日：2002-05-14

申请号：US09709546

申请日：2000-11-13

申请人： Seishi Kasai ,  Eiichi Kato

发明人： Seishi Kasai ,  Eiichi Kato

IPC分类号： B41N600

CPC分类号： B41N6/00

摘要： An under sheet for a lithographic printing plate which has an initial modulus of elasticity of 34×108 Pa or more, and has concavities and convexities having a central line average roughness (Ra) of less than 2 &mgr;m and Ra/Rz of 0.05 or more on the surface in contact with the back surface of the lithographic printing plate.

摘要翻译： 一种用于平版印刷版的底片，其初始弹性模量为34×10 8 Pa以上，并且具有中心线平均粗糙度（Ra）小于2μm的凹凸和Ra / Rz为0.05以上的凹凸 表面与平版印刷版的背面接触。

公开(公告)号：US06231988B1

公开(公告)日：2001-05-15

申请号：US09152922

申请日：1998-09-14

申请人： Eiichi Kato ,  Seishi Kasai

发明人： Eiichi Kato ,  Seishi Kasai

IPC分类号： B32B904

CPC分类号： B41C1/1058 ,  B41C1/1066 ,  G03G13/28 ,  G03G13/283 ,  G03G13/286 ,  Y10T428/256 ,  Y10T428/31 ,  Y10T428/31663

摘要： A lithographic printing plate precursor comprising a waterproof support having thereon an image-receiving layer, wherein the image-receiving layer comprises at least anatase-type titanium oxide grains and a resin having a siloxane bond in which silicon atoms are linked via an oxygen atom, the surface of the image-receiving layer has at least 25 degrees of contact angle with water and the contact angle with water is reduced to 15 degrees or below when it is irradiated with ultraviolet light: and a method for preparing a lithographic printing plate from the aforesaid lithographic printing plate precursor, which comprises forming a colored image on the image-receiving layer of the printing plate precursor by utilizing an electrophotographic recording system or an ink jet recording system and desensitizing the image-receiving layer by overall irradiation with ultraviolet light to change the non-image area to a water-receptive surface.

摘要翻译： 一种平版印刷版原版，其特征在于，具有防水载体，其上具有图像接收层，其中所述图像接收层至少包含锐钛矿型氧化钛颗粒和具有硅氧烷键的树脂，其中硅原子通过氧原子连接， 图像接收层的表面与水的接触角至少为25度，并且当用紫外线照射时，与水的接触角降低到15度以下;以及从该光刻胶制备平版印刷版的方法 上述平版印刷版原版，其包括通过利用电子照相记录系统或喷墨记录系统在印版前体的图像接收层上形成着色图像，并且通过用紫外光整体照射来使图像接收层脱敏以改变 非图像区域到接受水的表面。

公开(公告)号：US5939228A

公开(公告)日：1999-08-17

申请号：US787584

申请日：1997-01-22

申请人： Hiroshi Tashiro ,  Seishi Kasai ,  Eiichi Kato

发明人： Hiroshi Tashiro ,  Seishi Kasai ,  Eiichi Kato

IPC分类号： G03G5/05 ,  G03G5/08 ,  G03G13/28 ,  G03G5/087

CPC分类号： G03G5/0514 ,  G03G13/28 ,  G03G5/0517 ,  G03G5/0521 ,  Y10T428/24413

摘要： A direct drawing type lithographic printing plate precursor comprising a water-resistant support having provided thereon an image-receiving layer, wherein the image-receiving layer is formed by film coating a dispersion prepared by wet dispersion processing, with a dispersion medium of a nonaqueous solvent, a mixture comprising at least dry zinc oxide, a binder resin and an organic compound which is soluble in the dispersion medium and contains at least one acid group selected from the group consisting of --CO.sub.2 H, --SO.sub.3 H and --PO.sub.3 H.sub.2, adding a water-soluble low molecular weight organic compound containing at least two or more --PO.sub.3 H.sub.2 groups, which can form a chelate compound with a zinc ion, and further effecting wet dispersion processing.

摘要翻译： 包括在其上设置有图像接收层的耐水支撑体的直接拉伸型平版印刷版原版，其中，图像接收层通过将通过湿分散处理制备的分散体膜涂覆在非水溶剂的分散介质上而形成 ，至少包含干燥的氧化锌，粘合剂树脂和可溶于分散介质并含有至少一种选自-CO 2 H，-SO 3 H和-PO 3 H 2的酸基的有机化合物的混合物， 含有至少两个以上的PO 3 H 2基团的可溶性低分子量有机化合物，其可以与锌离子形成螯合化合物，并进一步进行湿分散处理。

公开(公告)号：US5342716A

公开(公告)日：1994-08-30

申请号：US946320

申请日：1992-10-22

申请人： Eiichi Kato ,  Seishi Kasai

发明人： Eiichi Kato ,  Seishi Kasai

IPC分类号： G03G5/05

CPC分类号： G03G5/0596 ,  G03G5/0589

摘要： An electrophotographic lithographic printing plate precursor having a photoconductive layer containing resin (A) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and containing a polymer component of the specified repeating unit and a polymer component having a polar group and dispersed resin grain (L) which is obtained by dispersion polymerization of monomer (C) containing a functional group capable of forming a carboxy group upon decomposition in the presence of a dispersion stabilizing resin soluble in a non-aqueous solvent and which has a silicon and/or fluorine atom-containing substituent.The electrophotographic lithographic printing plate precursor has good electrophotographic characteristics and water retentivity due to the suitable interaction between zinc oxide, a spectral sensitizing dye, the resin (A) and the dispersed resin grain (L) and provides a printing plater having excellent printing image and good printing durability even under severe conditions. Also, it is advantageously employed in the scanning exposure system using a semiconductor laser beam.

摘要翻译： PCT No.PCT / JP92 / 00188 Sec。 371日期：1992年10月22日 102（e）日期1992年10月22日PCT提交1992年2月21日PCT公布。 WO92 / 15048 PCT公开 日本9月3日，1992。一种电子照相平版印刷版原版，其具有含有重均分子量为1×10 3〜2×10 4的含有树脂（A）的光电导层，并含有规定重复单元的聚合物成分和具有极性的聚合物成分 在可溶于非水溶剂中的分散稳定树脂存在下，通过分解含有能够形成羧基的官能团的单体（C）获得的组分散树脂颗粒（L） 硅和/或含氟原子的取代基。 电子照相平版印刷版原版由于氧化锌，光谱增感染料，树脂（A）和分散树脂颗粒（L）之间的适当相互作用而具有良好的电子照相特性和保水性，并且提供了具有优异印刷图像的印刷机和 良好的印刷耐久性甚至在恶劣的条件下。 此外，它有利地用于使用半导体激光束的扫描曝光系统中。

公开(公告)号：US5154997A

公开(公告)日：1992-10-13

申请号：US661150

申请日：1991-02-27

申请人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

发明人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

IPC分类号： C08F299/00 ,  C08L29/00 ,  C08L29/10 ,  C08L33/04 ,  C08L33/06 ,  G03G5/05 ,  G03G5/08 ,  G03G5/087 ,  G03G13/28

CPC分类号： G03G5/0546 ,  G03G5/0589

摘要： An electrophotographic light-sensitive material is disclosed. The light-sensitive material comprises a support having provided thereon a photoconductive layer containing at least one inorganic photoconductive substance, a spectral sensitizer, and a binder resin which contains at least one binder resin (A) and at least one binder resin (B) as defined in the specification. The light-sensitive material is excellent in electrostatic charging characteristics and pre-exposure fatigue resistance.

公开(公告)号：US5112712A

公开(公告)日：1992-05-12

申请号：US600047

申请日：1990-10-19

申请人： Seishi Kasai ,  Kazuo Ishii ,  Eiichi Kato

发明人： Seishi Kasai ,  Kazuo Ishii ,  Eiichi Kato

IPC分类号： G03G5/08 ,  C07D207/46 ,  C07D209/48 ,  C07D209/56 ,  C07D209/62 ,  C07D209/66 ,  C07D209/76 ,  C07D209/94 ,  C07D211/94 ,  C07D217/24 ,  C07D221/14 ,  C07D221/18 ,  C07D221/20 ,  C07D223/10 ,  C07D223/16 ,  C07D233/72 ,  C07D263/44 ,  C07D265/32 ,  C07D471/06 ,  C07D487/04 ,  C07D491/044 ,  C07D491/18 ,  G03G5/06 ,  G03G5/09

CPC分类号： C07D209/48 ,  C07D207/46 ,  C07D209/66 ,  C07D209/76 ,  G03G5/0607 ,  G03G5/0629 ,  G03G5/0631 ,  G03G5/0633 ,  G03G5/0637 ,  G03G5/0638 ,  G03G5/0642 ,  G03G5/0648 ,  G03G5/065 ,  G03G5/0651 ,  G03G5/0653 ,  G03G5/09

摘要： This invention provides an electrophotographic photosensitive material comprising a conductive support having thereon a photoconductive layer containing at least an inorganic photoconductor and a binder resin, wherein the photoconductive layer contains an N-hydroxyimide compound represented by the following general formula (I): ##STR1## wherein Z represents an organic residue capable of forming a cyclic compound having a saturated or unsaturated bond, thereby increasing its photosensitivity and improving its chargeability, dark charge retentivity and photosensitivity over a wide range from visible to infrared regions. Upon actual reproduction, the inventive material provides a fog-free and clear image even under severe conditions such as high temperature and high humidity conditions (e.g., 30.degree. C. and 80% RH).

公开(公告)号：US5049463A

公开(公告)日：1991-09-17

申请号：US596656

申请日：1990-10-10

申请人： Eiichi Kato ,  Akio Oda ,  Seishi Kasai

发明人： Eiichi Kato ,  Akio Oda ,  Seishi Kasai

IPC分类号： G03G5/05

CPC分类号： G03G5/0589

摘要： An electrophotographic lithographic printing plate precursor, in which the effect by the hydrophilic property of non-image areas is further improved, and which is stable during storage even under very severe conditions and capable of readily realizing the hydrophilic property in a short time during processing of rendering hydrophilic is provided, which utilizes an electrophotographic photoreceptor comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein said binder resin comprises at least one resin containing at least one polymeric component having at least one of formyl group and functional groups represented by the following General Formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represent, same or different, hydrocarbon groups or R.sub.1 and R.sub.2 are organic residual radicals which are combined with each other to form a ring.

公开(公告)号：US06884557B2

公开(公告)日：2005-04-26

申请号：US10348410

申请日：2003-01-21

申请人： Seishi Kasai ,  Tadahiro Sorori ,  Ryosuke Itakura ,  Eiichi Kato

发明人： Seishi Kasai ,  Tadahiro Sorori ,  Ryosuke Itakura ,  Eiichi Kato

IPC分类号： B41N3/08 ,  G03G13/28 ,  G03G9/00

CPC分类号： B41N3/08 ,  G03G13/28 ,  G03G13/283

摘要： A desensitizing treatment liquid for offset printing plates, which contains a compound represented by formula (I) wherein φ represents —PO3H2, —OPO3H2, or the salt thereof and R1 represents an organic residue which may have a substituent. The desensitizing treatment liquid gives no problems to environmental pollution, is stable to the long-period storage and the continuous use, can shorten the etching treatment time, and is excellent in the desensitizing treatment ability as well as can provide an offset printing plate having a good reproducibility of highly minute images of a middle tone, screen tint, etc., and capable of printing without forming scumming at the non-image area.

摘要翻译： 一种胶版印刷用脱敏处理液，其含有式（I）表示的化合物，其中phi表示-PO 3 H 2 H 2，-OPO 3， H 2或其盐和R 1表示可以具有取代基的有机残基。 脱敏处理液对环境污染没有问题，对长期储存和连续使用是稳定的，可以缩短蚀刻处理时间，并且脱敏处理能力优异，并且可以提供具有 中等色调，丝网色调等高分辨率图像的重复性好，能够在非图像区域形成浮渣的情况下进行打印。

公开(公告)号：US06183923B2

公开(公告)日：2001-02-06

申请号：US09251880

申请日：1999-02-17

申请人： Eiichi Kato ,  Seishi Kasai

发明人： Eiichi Kato ,  Seishi Kasai

IPC分类号： G03G500

CPC分类号： G03G13/286 ,  B41C1/1066 ,  G03G13/26 ,  G03G13/28 ,  G03G13/283 ,  Y10T428/24802 ,  Y10T428/256

摘要： A lithographic printing plate precursor is disclosed, comprising a water-resistant support having provided thereon an image-receiving layer, wherein the image-receiving layer comprises anatase-type titanium oxide grains and a binder resin comprising a complex composed of an organometallic polymer and an organic polymer containing at least one member selected from the group consisting of an amido bond, a urethane bond, a ureido bond and a hydroxy group, the surface of the image-receiving layer has a contact angle with water of at least 25 degrees and the contact angle with water thereof is reduced to 15 degrees or below when it is irradiated with ultraviolet light, and further, a method for preparing the lithographic printing plate precursor and a method for preparing a lithographic printing plate by using the lithographic printing plate precursor are disclosed.

摘要翻译： 公开了一种平版印刷版原版，其包括在其上设置有图像接收层的防水支撑体，其中图像接收层包括锐钛矿型氧化钛颗粒和包含由有机金属聚合物和 含有选自酰氨基键，氨基甲酸酯键，脲基键和羟基中的至少一种的有机聚合物，图像接收层的表面与水的接触角至少为25度， 公开了当用紫外线照射时，与水的接触角降低到15度以下，此外，公开了使用平版印刷版原版制备平版印刷版原版的方法和制备平版印刷版的方法 。