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    Liquid developer for use in electrophotography
    1.
    发明授权
    Liquid developer for use in electrophotography 失效
    用于电子照相术的液体显影剂

    公开(公告)号：US4388395A

    公开(公告)日：1983-06-14

    申请号：US339544

    申请日：1982-01-15

    申请人： Kazuo Tsubuko ,  Junichiro Hashimoto ,  Shinichi Kuramoto ,  Makoto Okawara

    发明人： Kazuo Tsubuko ,  Junichiro Hashimoto ,  Shinichi Kuramoto ,  Makoto Okawara

    IPC分类号： C08F265/00 ,  C08F265/04 ,  C08F290/00 ,  C08F290/12 ,  C08F299/00 ,  G03G9/13 ,  G03G9/12

    CPC分类号： C08F265/04 ,  C08F290/12 ,  G03G9/133

    摘要： A liquid developer for use in electrophotography is disclosed which is prepared by dispersing a toner consisting essentially of a pigment or dye and a resin in a carrier liquid having a high insulating property and a low dielectric constant, wherein said resin is a nonaqueous dispersed resin obtained by effecting, in a nonaqueous solvent comprising an aliphatic hydrocarbon, the steps of:(a) copolymerizing (1) a monomer A having the general formula I: ##STR1## [wherein R is H or --CH.sub.3, and A is --COOC.sub.n H.sub.2n+1 or --OC.sub.n H.sub.2n+1 (n is an integer of 6 to 20)] with (2) a polyfunctional monomer having two or more double bonds and (3) a monomer B having a glycidyl group or a vinyl monomer C having a carboxyl group,(b) esterifying the resulting copolymer with the monomer C when the monomer B was used in the step (a) and with the monomer B when the monomer C was used in the step (a) respectively, and(c) grafting the resulting esterified copolymer with a monomer D selected from the group consisting of compounds having the general formula II: ##STR2## [wherein R is the same as previously stated and Z is --COOC.sub.m H.sub.2m+1 (m is an integer of 1 to 4), --OCOC.sub.m' H.sub.2m'+1 (m' is an integer of 1 to 6), ##STR3## (m is the same as previously stated), --COOH, --COOC.sub.2 H.sub.4 OH or ##STR4## styrene, vinyl acetate, vinyltoluene, chlorostyrene, vinylpyrrolidone and vinylpyridine.

    摘要翻译： 公开了一种用于电子照相术的液体显影剂，其通过将基本上由颜料或染料和树脂组成的调色剂分散在具有高绝缘性能和低介电常数的载体液体中制备，其中所述树脂是获得的非水分散树脂 通过在包含脂族烃的非水溶剂中进行以下步骤：（a）使（1）具有通式I的单体A：其中R是H或-CH 3，A是-COOC n H 2n + 1或-OCnH2n + 1（n为6〜20的整数）]与（2）具有两个以上双键的多官能单体和（3）具有缩水甘油基的单体B或具有羧基的乙烯基单体C ，（b）当在步骤（a）中使用单体B时，和单体B分别在步骤（a）中使用单体C时，用单体C酯化所得共聚物，和（c）将所得的共聚物 酯化的共聚物与选自下组的单体D. 具有通式II的化合物：其中R与前述相同，Z为-COOCmH2m + 1（m为1〜4的整数），-OCOCm'H2m'+ 1（m'为整数 1〜6），＆lt; IMAGE＆gt;（m与前述相同），-COOH，-COOC 2 H 4 OH或苯乙烯，乙酸乙烯酯，乙烯基甲苯，氯苯乙烯，乙烯基吡咯烷酮和乙烯基吡啶。

    Electrostatic copying apparatus
    2.
    发明授权
    Electrostatic copying apparatus 失效
    静电复印机

    公开(公告)号：US4310238A

    公开(公告)日：1982-01-12

    申请号：US181609

    申请日：1980-08-27

    申请人： Manabu Mochizuki ,  Seiichi Miyakawa ,  Taro Kimura ,  Junichiro Hashimoto

    发明人： Manabu Mochizuki ,  Seiichi Miyakawa ,  Taro Kimura ,  Junichiro Hashimoto

    IPC分类号： G03G15/10 ,  G03G15/00

    CPC分类号： G03G15/105 ,  Y10S222/01

    摘要： First and second sensors (37), (39) are provided in a developing tank (36) containing a liquid developer consisting of a liquid carrier or dispersant and toner particles dispersed in the carrier. The first sensor (37) measures the electrical resistivity of the developer whereas the second sensor (39) measures the optical transmissibility thereof. Additional toner is supplied into the developer to maintain the transmissivity at a value which is a predetermined function of the resistivity. The transmissibility value is reduced as the resistivity increases, thereby maintaining the copy image density constant. The first sensor (37) includes two electrodes immersed in the developer and an A.C. or D.C. voltage is applied thereacross. The current flow through the electrodes (37) and thereby the developer is measured to determine the resistivity of the developer. Where the applied voltage is D.C., an arrangement is provided to mechanically scrape accumulated developer off the electrodes (37) at intermittent intervals.

    摘要翻译： 第一和第二传感器（37），（39）设置在包含由液体载体或分散剂组成的液体显影剂和分散在载体中的调色剂颗粒的显影槽（36）中。 第一传感器（37）测量显影剂的电阻率，而第二传感器（39）测量其透光率。 附加的调色剂被供应到显影剂中以将透射率保持在作为电阻率的预定函数的值。 透射率值随着电阻率的增加而减小，从而保持复印图像的密度不变。 第一传感器（37）包括浸在显影剂中的两个电极，并且在其上施加交流或直流电压。 测量通过电极（37）和由此显影剂的电流流动以确定显影剂的电阻率。 在施加的电压为直流电的情况下，提供了一种布置以间歇地间隔地将积聚的显影剂从电极（37）上刮除。

    Liquid developer for use in electrophotography
    5.
    发明授权
    Liquid developer for use in electrophotography 失效
    用于电子照相术的液体显影剂

    公开(公告)号：US4250241A

    公开(公告)日：1981-02-10

    申请号：US071447

    申请日：1979-08-31

    申请人： Kazuo Tsubuko ,  Taro Kimura ,  Motoo Tasaka ,  Junichiro Hashimoto

    发明人： Kazuo Tsubuko ,  Taro Kimura ,  Motoo Tasaka ,  Junichiro Hashimoto

    IPC分类号： C08F289/00 ,  C08F16/00 ,  C08F16/16 ,  C08F20/00 ,  C08F20/10 ,  C08F291/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L33/00 ,  C08L33/02 ,  C08L51/00 ,  C08L51/02 ,  C08L77/00 ,  C08L101/00 ,  G03G9/12 ,  G03G9/13

    CPC分类号： G03G9/122 ,  G03G9/133

    摘要： A liquid developer for use in electrophotography which is prepared by making a carrier liquid comprising a non-aqueous solvent having a highly insulating property and a low dielectric constant contain a coloring agent and a resin dispersed therein, characterized in that said resin contains the following components (A) and (B):(A) a polymer comprising at least one kind of resin having an acetone tolerance value of 100-5000 and at least one kind of monomer capable of dissolving said resin, and(B) a non-aqueous type thermoplastic resin obtained by esterifying a copolymer obtained from a monomer having the general formula I ##STR1## [wherein R is --H or --CH.sub.3 and X is --COOC.sub.n H.sub.2n+1 or --OC.sub.n H.sub.2n+1 (6.ltoreq.n.ltoreq.20)], and any one of a monomer having a glycidyl group, an unsaturated carboxylic acid and its anhydride, with said unsaturated carboxylic acid or its anhydride when said copolymer has the glycidyl group as the constitution unit and with the monomer having the glycidyl group when the copolymer has the unsaturated carboxylic acid or its anhydride as the constitution unit; and further graft-polymerizing the unsaturated portion of the resulting esterification product with at least one member of monomers having the general formula II ##STR2## [wherein R is --H or --CH.sub.3 and Y is --COOC.sub.n' H.sub.2n'+1 (1.ltoreq.n'.ltoreq.4), --OCOC.sub.m H.sub.2m+1 (1.ltoreq.m.ltoreq.6), ##STR3## and the general formula III ##STR4## [wherein R is --H or --CH.sub.3, and Z is --COOCH.sub.2 CH--N (C.sub.n" H.sub.2n"+1).sub.2 (1.ltoreq.n".ltoreq.5), --COOH, --COOC.sub.2 H.sub.4 OH or ##STR5##

    摘要翻译： 通过制备包含具有高绝缘性和低介电常数的非水溶剂的载体液体制备的用于电子照相术的液体显影剂含有分散在其中的着色剂和树脂，其特征在于所述树脂含有以下成分 （A）和（B）：（A）包含丙酮耐量值为100-5000的至少一种树脂和能够溶解所述树脂的至少一种单体的聚合物，（B）非水性 通过酯化由具有通式I的单体获得的共聚物获得的热塑性树脂[其中R是-H或-CH 3，X是-COOCnH 2 n + 1或-OC n H 2n + 1（6≤n= 20）]和具有缩水甘油基，不饱和羧酸及其酸酐的单体中的任一种与所述不饱和羧酸或其酸酐的共聚物，当所述共聚物具有缩水甘油基作为构成单元时，并且具有缩水甘油基的单体 当共聚物 具有不饱和羧酸或其酸酐作为构成单元; 并进一步将所得酯化产物的不饱和部分与至少一种具有通式II的单体接枝聚合[其中R为-H或-CH 3且Y为-COOCn'H 2n + 1（1 < / = n'和通式III [其中R是-H或-CH 3，Z是 -COOCH 2 CH-N（Cn''H2n“+ 1）2（1

    Liquid developer for electrophotography
    7.
    发明授权
    Liquid developer for electrophotography 失效
    电子照相用液体显影剂

    公开(公告)号：US4595646A

    公开(公告)日：1986-06-17

    申请号：US558265

    申请日：1983-12-05

    申请人： Kazuo Tsubuko ,  Junichiro Hashimoto

    发明人： Kazuo Tsubuko ,  Junichiro Hashimoto

    IPC分类号： G03G9/12 ,  G03G9/135

    CPC分类号： G03G9/1355 ,  G03G9/135

    摘要： A liquid developer for electrophotography is disclosed, which comprises a highly electrically insulating carrier liquid with a low dielectric constant and a colorant comprising a pigment component treated with a humic acid component selected from the group consisting of humic acid, a humic acid salt and a humic acid derivative, and then coated with a resin component, which colorant is dispersed in the highly electrically insulating carrier liquid.

    摘要翻译： 公开了一种用于电子照相术的液体显影剂，其包括具有低介电常数的高电绝缘载液和包含用腐植酸组分处理的颜料组分的着色剂，所述腐殖酸组分选自腐殖酸，腐殖酸盐和腐殖酸 酸衍生物，然后用树脂组分涂覆，该着色剂分散在高电绝缘载液中。