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    • 21. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5356748A
    • 1994-10-18
    • US974215
    • 1992-11-10
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • C08F290/04G03G9/13G03G9/135
    • C08F290/04G03G9/133
    • A positively chargeable liquid developer for electrostaticphotography comprising a non-aqueous solvent having a volume specific resistance of at least 10.sup.9 .OMEGA.cm and resin grains dispersed therein, wherein the resin grains contain a dispersion stabilizing resin which is dissolved or dispersed in a colloidal form in the non-aqueous solvent and which mainly comprises a graft copolymer composed of (1) at least one macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 1.times.10.sup.5 obtained by bonding a terminal carboxyl group bonded to the main chain of a polymer containing at least one specific polymer component to an epoxy compound having at least one polymerizable double bond group, using a quaternary ammonium salt as a reaction catalyst, and (2) at least one specific monomer, which gives the definite chargeability, easily controls the charge amount, is excellent in dispersion stability and endures long-term use and storage.
    • 一种用于静电照相的可带正电荷的液体显影剂,其包含体积电阻率为至少为10 10Ω·cm的非水溶剂和分散在其中的树脂颗粒,其中树脂颗粒含有以胶体形式溶解或分散于其中的分散体稳定树脂 非水性溶剂,其主要包含由(1)至少一种重均分子量为1×10 3〜1×10 5的大分子单体(M)组成的接枝共聚物,所述大分子单体(M)通过键合与含有 使用季铵盐作为反应催化剂的具有至少一个可聚合双键基团的环氧化合物的至少一种特定聚合物组分,和(2)具有确定带电性的至少一种特定单体容易控制电荷量 ,具有优异的分散稳定性和耐久长期使用和储存。
    • 22. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5344694A
    • 1994-09-06
    • US885353
    • 1992-05-19
    • Seiji HorieKenji SanoNobuo SuzukiSyu Watarai
    • Seiji HorieKenji SanoNobuo SuzukiSyu Watarai
    • G03G5/05G03G9/13B32B9/00
    • G03G5/0521G03G9/131G03G9/133Y10T428/24802
    • A liquid developer for electrostatic photography, said liquid developer comprising resin particles dispersed in a non-aqueous solvent having a volume resistivity of at least 10.sup.9 .OMEGA.cm, said dispersed resin particles being obtained by polymerizing(a) at least one member of methyl methacrylate and ethyl methacrylate soluble in said non-aqueous solvent and(b) at least one member selected from the group consisting of acrylic esters and methacrylic esters having an alkyl group having not more than 4 carbon atoms, said esters being soluble in said non-aqueous solvent, but being made insoluble by polymerization,said components (a) and (b) being polymerized in the presence of a dispersion stabilizing resin which is soluble in said non-aqueous solvent, and said dispersion stabilizing resin comprising a graft copolymer formed by polymerizing(i) at least one member of macromonomers (M) having a weight-average molecular weight of 1.times.10.sup.3 to 4.times.10.sup.4, said macromonomers (M) having a polymerizable double bond containing group represented by the formula (I) defined in the specification bonded to one terminal of the main polymer chain, said macromonomers (M) containing at least one member of polymer components represented by formula (II) defined in the specification in the main chain thereof, and(ii) at least one member of monomers represented by formula (III) as defined in the specification,said monomers (a) and (b) being made insoluble by polymerization.
    • 一种用于静电摄影的液体显影剂,所述液体显影剂包括分散在体积电阻率为至少10 9欧米亚厘米的非水溶剂中的树脂颗粒,所述分散的树脂颗粒通过聚合(a)至少一种甲基丙烯酸甲酯和 可溶于所述非水溶剂的甲基丙烯酸乙酯和(b)选自具有不超过4个碳原子的烷基的丙烯酸酯和甲基丙烯酸酯的至少一种,所述酯可溶于所述非水溶剂 但是通过聚合使其不溶,所述组分(a)和(b)在可溶于所述非水溶剂的分散体稳定树脂的存在下聚合,所述分散体稳定树脂包含通过聚合形成的接枝共聚物 i)至少一种重均分子量为1×10 3至4×10 4的大分子单体(M)的成员,所述大分子单体(M)具有可聚合的 所述大分子单体(M)含有在本说明书中定义的至少一种由式(II)表示的聚合物组分的组分中的至少一种聚合物组分, 其主链,和(ii)说明书中定义的至少一种由式(III)表示的单体,所述单体(a)和(b)通过聚合而不溶解。
    • 24. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5589312A
    • 1996-12-31
    • US411079
    • 1995-03-27
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • G03G9/13
    • G03G9/131G03G9/133
    • A liquid developer for electrostatic photography comprising resin grains dispersed in a non-aqueous solvent having a volume specific resistivity of at least 10.sup.9 .OMEGA.cm, wherein the resin grains are obtained by polymerizing (a) at least one monomer selected from benzyl methacrylate, benzyl acrylate, styrene and a styrene derivative, and (b) at least one monomer selected from acrylic acid esters and methacrylic acid esters having an alkyl group having not more than 3 carbon atoms which are soluble in the non-aqueous solvent but become insoluble therein by being polymerized, in the presence of a dispersion stabilizing resin which mainly comprises a graft copolymer composed of at least one macromonomer (M) containing a polymer component represented by the general formula (Ia) or (Ib) defined herein.The liquid developer is excellent in dispersion stability, and toner images having resist with high resistivity to etching solutions can be formed in electrostatic photography.
    • 一种用于静电摄影的液体显影剂,其包含分散在体积电阻率为至少10 9欧米亚厘米的非水溶剂中的树脂颗粒,其中树脂颗粒通过聚合(a)至少一种选自甲基丙烯酸苄基酯,丙烯酸苄酯 ,苯乙烯和苯乙烯衍生物,和(b)至少一种选自具有不超过3个碳原子的烷基的丙烯酸酯和甲基丙烯酸酯,其可溶于非水溶剂但通过 在分散稳定树脂的存在下聚合,其主要包括由至少一种含有由本文定义的通式(Ia)或(Ib)表示的聚合物组分的大分子单体(M)组成的接枝共聚物。 液体显影剂具有优异的分散稳定性,并且可以在静电摄影中形成具有对蚀刻溶液具有高电阻率的抗蚀剂的调色剂图像。