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    • 3. 发明授权
    • Positively charged electrostatic toner contains low molecular weight
waxy material and pyridinium halide or organic sulfonate
    • 带正电荷的静电调色剂含有低分子量蜡质材料和卤化吡啶鎓或有机磺酸盐
    • US4460672A
    • 1984-07-17
    • US434198
    • 1982-10-14
    • Robert J. GruberPaul C. JulienSteven B. BolteRonald J. Koch
    • Robert J. GruberPaul C. JulienSteven B. BolteRonald J. Koch
    • G03G9/097G03G9/10
    • G03G9/09758G03G9/09741G03G9/0975
    • This invention is generally directed to an improved positively charged dry electrostatic toner composition comprised of resin particles, pigment particles, a low molecular weight waxy material having a molecular weight of from 500 to about 20,000, and from about 0.5 percent to about 10 percent by weight of a charge enhancing additive selected from the group consisting of alkyl pyridinium halides, organic sulfonate compositions and organic sulfate compositions, of the following formulas: ##STR1## wherein R is a hydrocarbon group containing about 8 to about 22 carbon atoms, and A is an anion, and ##STR2## wherein R.sub.1 is an alkyl group containing from about 12 carbon atoms to about 22 carbon atoms, R.sub.2 and R.sub.3 are independently selected from alkyl groups containing from about 1 carbon atom to about 5 carbon atoms, R.sub.4 is an alkylene group containing from about 1 carbon atom to about 5 carbon atoms, R.sub.5 is a tolyl group or an alkyl group containing from about 1 carbon atom to about 3 carbon atoms, and n is the number 3 or 4.
    • 本发明一般涉及由树脂颗粒,颜料颗粒,分子量为约500至约20,000和约0.5重量%至约10重量%的低分子量蜡状材料组成的带正电荷的干电荷调色剂组合物 的选自下列式的烷基吡啶鎓卤化物,有机磺酸盐组合物和有机硫酸盐组合物的电荷增强添加剂:其中R是含约8至约22个碳原子的烃基 原子,A是阴离子,而图像II。 其中R 1是含有约12个碳原子至约22个碳原子的烷基,R 2和R 3独立地选自含有约1个碳原子至约5个碳原子的烷基,R4是含约1个碳原子的亚烷基 至约5个碳原子,R 5为甲苯基或含有约1个碳原子至约3个碳原子的烷基,n为3或4。
    • 5. 发明授权
    • Process for magnetic image character recognition
    • 磁图像字符识别过程
    • US4517268A
    • 1985-05-14
    • US531520
    • 1983-09-12
    • Robert J. GruberJohn F. KnappSteven B. Bolte
    • Robert J. GruberJohn F. KnappSteven B. Bolte
    • G03G19/00G03G9/08G03G9/083G03G9/087G03G9/113G06K15/14H01F41/16
    • H01F41/16G03G9/08G03G9/083G03G9/0833G03G9/08711
    • Disclosed is an improved, simple, economical process for generating documents, such as personal checks, suitable for magnetic image character recognition, which process comprises generating such documents with conventional xerographic methods in a high speed electronic laser printing device, and wherein there is selected as the developer composition a magnetic toner containing from about 20 percent by weight to about 70 percent by weight of magnetite particles, and from about 30 percent by weight to about 80 percent by weight of toner resin particles of styrene copolymers, such as a styrene butadiene copolymer, a styrene n-butylmethacrylate copolymer, or polyesters, and wherein the carrier particles are comprised of ferrite cores, coated with various polymeric resinous compositions. There can also be included in the developer composition various additives such as collodial silica particles, and charge enhancing additives, and further conductive carbon black or insulating carbon black particles can be incorporated into the carrier polymeric resinous coating.
    • 公开了一种改进的,简单的,经济的用于生成适合于磁图像字符识别的诸如个人检查的文档的过程,该方法包括在高速电子激光打印装置中用常规静电印刷方法生成这样的文档,并且其中选择为 显影剂组合物含有约20重量%至约70重量%的磁铁矿颗粒的磁性调色剂和约30重量%至约80重量%的苯乙烯共聚物如苯乙烯丁二烯共聚物的调色剂树脂颗粒 ,苯乙烯正丁基甲基丙烯酸酯共聚物或聚酯,并且其中载体颗粒由铁氧体磁芯组成,涂覆有各种聚合物树脂组合物。 还可以在显影剂组合物中包括诸如胶体二氧化硅颗粒和电荷增强添加剂的各种添加剂,并且可以在载体聚合物树脂涂料中引入另外的导电炭黑或绝缘炭黑颗粒。