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    • 3. 发明授权
    • Electrophotographic developing method using magnetic toners
    • 使用磁性调色剂的电子照相显影方法
    • US4433042A
    • 1984-02-21
    • US327197
    • 1981-12-03
    • Tsuneaki KawanishiAkio MukohHirosada MorishitaNobuyoshi Hoshi
    • Tsuneaki KawanishiAkio MukohHirosada MorishitaNobuyoshi Hoshi
    • G03G9/08G03G9/083G03G13/09G03G13/22
    • G03G13/22G03G9/0823G03G9/083
    • Electrophotographic copying is carried out by electrostatically forming a latent image on a recording medium, supplying a magnetic toner of single component system containing at least a resin and fine particles of forromagnetic material on a non-magnetic sleeve provided with a permanent magnet roller having a plurality of magnetic poles therein, transporting the magnetic toner into a gap between the recording medium and the non-magnetic sleeve, attaching the magnetic toner to the recording medium, thereby developing the latent image into a visible image, electrostatically transferring the toner image thus formed on the recording medium onto a transfer sheet, and fixing the transferred image, thereby obtaining a final image, wherein the magnetic toner has a resistivity of more than 5.times.10.sup.15 .OMEGA.cm and a relative dielectric constant of less than 3.0.Good development and good transferred image are obtained even with a recording medium having a low relative dielectric constant and a high insulating property, and practically high transfer efficiency can be obtained with the ordinary sheet having a low resistivity as a transfer sheet.
    • 通过在记录介质上静电形成潜像来进行电子照相复印,将含有至少一种树脂的单组分体系的磁性调色剂和非磁性的细小颗粒供给到具有多个 将磁性调色剂输送到记录介质和非磁性套筒之间的间隙中,将磁性调色剂附着到记录介质上,从而将潜像显影成可见图像,将如此形成的调色剂图像静电转印到 将记录介质转印到转印纸上,并固定转印图像,从而获得最终图像,其中磁性调色剂的电阻率大于5×10 15欧姆·厘米,相对介电常数小于3.0。 即使使用具有低相对介电常数和高绝缘性的记录介质,也能获得良好的显影和良好的转印图像,并且通过具有低电阻率的普通片作为转印片可以获得实际上高的转印效率。
    • 5. 发明授权
    • Complex type electrophotographic plate
    • 复合型电子照相平板
    • US4346157A
    • 1982-08-24
    • US232829
    • 1981-02-09
    • Atsushi KakutaShigeo SuzukiYasuki MoriHirosada Morishita
    • Atsushi KakutaShigeo SuzukiYasuki MoriHirosada Morishita
    • G03G5/06G03G5/09
    • G03G5/0637G03G5/0629G03G5/0631G03G5/0661G03G5/067Y10S430/10
    • A complex type electrophotographic plate comprises a conductive support; a first layer, adhered to the support, of a charge generating material, said first layer having a thickness of 0.1 to 5 .mu.m; and a second layer, superposed on the first layer, of a homogeneous mixture of a charge transport material and an insulating, resinous binder therefor, said second layer having a thickness of 5 to 100 .mu.m and being substantially transparent to light of a wave length of 4200 to 8000 A; wherein said charge transport material is at least one member selected from the class consisting of nonionic compounds represented by the general formula: X--(CH.dbd.CH).sub.n Ar where X is a heterocyclic group selected from the group consisting of ##STR1## and Y is O or S, R is a lower alkyl group; the hetero ring may be substituted; n is an integer of 0, 1 or 2; and Ar is an aryl or substituted aryl group.The electrophotographic plate has a high light sensitivity and can be used in more than 10.sup.3 repetitions without fatigue.
    • 复合型电子照相板包括导电支撑件; 第一层,附着到载体上,电荷产生材料,所述第一层的厚度为0.1-5μm; 以及叠置在第一层上的电荷输送材料和绝缘的树脂粘合剂的均匀混合物的第二层,所述第二层的厚度为5至100μm,并且对波长的光是基本上透明的 4200至8000A; 其中所述电荷输送材料是选自由以下通式表示的非离子化合物中的至少一种:X-(CH = CH)n Ar其中X是选自下组的杂环基: IMAGE> Y是O或S,R是低级烷基; 杂环可以被取代; n是0,1或2的整数; 并且Ar是芳基或取代的芳基。 电子照相平板具有高的光敏感性,可以在不发生疲劳的情况下重复使用103次以上。
    • 6. 发明授权
    • Complex type electrophotographic plate and electrophotographic method
using the same
    • 复合型电子照相平板和使用其的电子照相方法
    • US4435492A
    • 1984-03-06
    • US383957
    • 1982-06-01
    • Shigeo SuzukiAtsushi KakutaYasuki MoriHirosada Morishita
    • Shigeo SuzukiAtsushi KakutaYasuki MoriHirosada Morishita
    • G03G5/06G03G5/14
    • G03G5/067
    • In a complex type electrophotographic plate comprising an electroconductive support, superposed thereon a charge generating material (CGL) layer and a charge transport material layer superposed on the CGL layer when there is used as said charge transport material at least one compound of the formula:X--(CH.dbd.CH).sub.n --CH.dbd.Ywherein X is a heterocyclic group of the formula: ##STR1## Y is a heterocyclic group of the formula: ##STR2## these heterocyclic groups may be substituted by one or more lower alkyl groups, halogen atoms, or phenyl groups; Z is an oxygen, sulfur or selenium atom; R is an alkyl group having 1 to 7 carbon atoms; n is an integer of 1 or 2; and one hydrogen atom in the group of the formula --(CH.dbd.CH).sub.n -- may be substituted by an alkyl group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, a styryl group or a group of the formula: ##STR3## electrophotographic characteristics such as light sensitivity, dark decay characteristics, repetition characteristics, etc. are improved remarkably. An electrophotographic method using such an electrophotographic plate is also provided.
    • 在包含导电载体的复合型电子照相板中,当用作至少一种下式的化合物时,叠加有电荷产生材料(CGL)层和叠加在CGL层上的电荷传输材料层:X - (CH = CH)n-CH = Y其中X是下式的杂环基:Y是下式的杂环基:这些杂环基可以 被一个或多个低级烷基,卤素原子或苯基取代; Z是氧,硫或硒原子; R是具有1至7个碳原子的烷基; n为1或2的整数; 式 - (CH = CH)n - 基中的一个氢原子可以被具有1至4个碳原子的烷基,卤素原子,苯基,苯乙烯基或下式的基团取代: 电子照相特性如光敏度,暗衰变特性,重复特性等显着提高。 还提供了使用这种电子照相板的电子照相方法。
    • 8. 发明授权
    • Liquid developer for electro photography
    • 液体显影剂电摄影
    • US4156034A
    • 1979-05-22
    • US559520
    • 1975-03-18
    • Akio MukohYasuki MoriHirosada MorishitaNobuhiko ShitoShigeyoshi Tanaka
    • Akio MukohYasuki MoriHirosada MorishitaNobuhiko ShitoShigeyoshi Tanaka
    • G03G9/13G03G9/16
    • G03G9/131Y10S526/934
    • A liquid developer for electro photography which comprises a coloring agent, a coating agent, a resistivity controlling agent and a carrier liquid which disperses or dissolves the said three agents is suitable for providing high reproducibility of images when at least one of the following copolymers are used as said coating agent:(a) Copolymer of an acrylic acid compound represented by the following general formula (i) and a para-alkylstyrene represented by the following general formula (ii): ##STR1## (WHEREIN R.sub.1 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.2 is hydrogen or C.sub.m H.sub.p X.sub.q wherein m=1-6 and p+q=2m+1 or p+q=m-1 and X is a halogen, amino group, secondary or tertiary amino group having an alkyl group of 1-4 carbon atoms, nitro group, cyano group or hydroxyl group) ##STR2## (WHEREIN R.sub.3 is an alkyl group of 2-18 carbon atoms). (B) Copolymer obtained by polymerizing at least one member selected from the para-alkylstyrene represented by said general formula (ii), other polymerizable vinyl monomer and a polymerizable polymer and at least one member selected from an acrylic acid compound having an ether bond and represented by the following general formula (iii): ##STR3## (WHEREIN R.sub.4 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.5 is ##STR4## C.sub.l H.sub.2l+l wherein Y is hydrogen or hydroxyl group, m is 1-6, n is 1-30 and l is 0-18) and(c) Copolymer obtained by polymerizing at least one acrylic acid compounds selected from those of said general formulas (i) and (iii), the para-alkylstyrene represented by the general formula (ii) and an acrylic acid compound represented by the following general formula (iv): ##STR5## (WHEREIN R.sub.6 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.7 is an alkyl group of 1-18 carbon atoms).
    • 用于电摄影的液体显影剂包括着色剂,涂层剂,电阻率控制剂和分散或溶解所述三种试剂的载体液体,当使用至少一种以下共聚物时,适于提供高的图像再现性 作为所述涂布剂: