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    • 8. 发明授权
    • Electrophotographic printing original plate and electrophotographic
plate making process using the printing original plate
    • 电子照相印刷原版和电子版制版工艺采用印刷原版
    • US4596754A
    • 1986-06-24
    • US726363
    • 1985-04-23
    • Kyoji TsutsuiMitsuru HashimotoMasafumi OhtaMasaomi Sasaki
    • Kyoji TsutsuiMitsuru HashimotoMasafumi OhtaMasaomi Sasaki
    • C09B35/021G03G5/047G03G5/06G03G5/14
    • G03G5/0685C09B35/021G03G5/047G03G5/0679G03G5/0681G03G5/0683
    • An electrophotographic printing original plate is disclosed, which comprises an electroconductive support material and an electrophotographic photosensitive layer formed thereon, which electrophotographic photosensitive layer comprises (i) a charge generation layer consisting essentially of a particular azo pigment serving as a charge generating material and (ii) a charge transport layer consisting essentially of a charge transporting material and an alkali-soluble resin; and an electrophotographic printing plate making process using the above printing original plate is also disclosed, which comprises the steps of electrically charging uniformly the above printing original plate, exposing the charged printing original plate to optical images to form latent electrostatic images thereon, developing the latent electrostatic images with toner, fixing the toner images to the printing original plate, and removing the electrophotographic photosensitive layer portions corresponding to the non-image areas of the printing original plate by dissolving the photosensitive layer portions in a dissolving liquid, thereby making a printing plate.
    • 公开了一种电子照相印刷原版,其包括导电支撑材料和形成在其上的电子照相感光层,该电子照相感光层包含(i)基本上由用作电荷产生材料的特定偶氮颜料组成的电荷产生层和(ii )电荷传输层,其主要由电荷输送材料和碱溶性树脂组成; 并且还公开了使用上述印刷原版的电子照相印版制作方法,其包括以下步骤:均匀地对上述印刷原版进行充电,将带电印刷原版曝光于光学图像上以在其上形成静电图像, 用调色剂静电图像,将调色剂图像固定到印刷原版上,并通过将感光层部分溶解在溶解液中来除去与印刷原版的非图像区域对应的电照相感光层部分,从而制成印版 。
    • 9. 发明授权
    • Disazo electrophotographic photosensitive member
    • 双偶电子照相感光构件
    • US4551404A
    • 1985-11-05
    • US406313
    • 1982-08-09
    • Masaaki HiroYoshio TakasuShozo IshikawaKazuharu KatagiriHideyuki Takahashi
    • Masaaki HiroYoshio TakasuShozo IshikawaKazuharu KatagiriHideyuki Takahashi
    • C09B35/021G03G5/06G03G5/14
    • G03G5/0685C09B35/021G03G5/0679G03G5/0683G03G5/0687G03G5/0688
    • An electrophotographic photosensitive member characterized by containing at least one azo pigment represented by the following formula (1), (2), or (3): ##STR1## In these formulae; ##STR2## wherein Z represents ##STR3## in which R.sub.71 is hydrogen, or substituted or unsubstituted alkyl; n is 0 or 1; R.sub.21, R.sub.22, R.sub.61 and R.sub.62 represent hydrogen, alkyl, alkoxy, nitro, or hydroxyl R.sub.31 and R.sub.32 represent hydrogen or alkoxy; and R.sub.41, R.sub.42, R.sub.43, R.sub.44, R.sub.51, R.sub.52, R.sub.53 and R.sub.54 represent hydrogen, halogen, or organic monovalent residue. ##STR4## wherein X represents a residue necessary for completing an aromatic hydrocarbon ring or a heterocyclic ring, each ring being substituted or unsubstituted; R.sub.11 represents hydrogen or alkyl; R.sub.12 represents methyl, ethyl or C.sub.3 -C.sub.8 linear alkyl; and R.sub.17 and R.sub.18 represent alkyl, aralkyl or aryl, each substituted or unsubstituted. In formula (2), R.sub.11, R.sub.12 and X are as defined above; R.sub.13 and R.sub.14 represent hydrogen or cyano; and R.sub.15 and R.sub.16 represent hydrogen, halogen, alkyl, alkoxy, nitro or hydroxyl.
    • 特征在于含有至少一种由下式(1),(2)或(3)表示的偶氮颜料:(CpNN)2A1(1)(2)(CpNN)3A2(3) 在这些公式中 A1: A2: 其中Z代表B,4 R71,S,OSOorCO,+ RE,其中R71为氢 ,或取代或未取代的烷基; n为0或1; R 21,R 22,R 61和R 62表示氢,烷基,烷氧基,硝基或羟基R 31,R 32表示氢或烷氧基; R 41,R 42,R 43,R 44,R 51,R 52,R 53和R 54表示氢,卤素或有机一价残基。 Cp: + TR 其中X表示完成芳族烃环或杂环所必需的残基,每个环是取代或未取代的; R11表示氢或烷基; R12表示甲基,乙基或C3-C8直链烷基; 并且R 17和R 18代表烷基,芳烷基或芳基,各取代或未取代。 在式(2)中,R 11,R 12和X如上所定义; R 13和R 14表示氢或氰基; R 15和R 16表示氢,卤素,烷基,烷氧基,硝基或羟基。