A Study on Mono-Component Color Developers for Electrophotography

电子照相用单组分彩色显影剂的研究

• 批准号: 61550221
• 负责人: TAKEUCHI Manabu
• 金额: $ 0.58万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550221/
• 关键词: Electrophotography; Electrophotographic Developer; Tribo Electrification; コロナ帯電; 一成分現像剤; カラー現像剤

Recently electrophotography is widely applied for various non-impact printing systems, for example photo-copying machines, laser beam printers, LED printers, etc. Although two-component developers are mainly used in the systems at the present time, mono-component developer is more desirable to improve their maintenance. Scince a mono-component developer usually contains magnetic materials, however, it is difficult to make color mono-component developers.We have studied fundamental properties and conitions which non-magnetic monocomponent developers must have. First electrical properties of several kinds of polymer powders, such as polystylene, epoxy, polyethylene, etc. were studied, which may be the main constituent of the mono-component developers. It was found that polymers, such as polyvinyl alcohol, polyvinyl chloride, nylon, could not keep charge for a long time. While, polymer powders, such as polyethylene, epoxy, Teflon, etc. could keep charge for more than several days.Next, electrical properties of the powders, consisting of a polymer and a pigment, were characterized. The amounts of tribo charge in those powders were in the range og 1 - 10 <micrn>C/g. Electrical properties of the pwders are similar to those of the main polmers, for example, the pwder, consisting of polyvinyl chloride and a pigment, cannot keep charge for a long time. It is concluded that polyethylene, epoxy, etc. may be the main polymer for mono-component developers.

近年来，电子照相广泛应用于各种非击打式打印系统，例如复印机、激光打印机、LED打印机等。虽然目前在系统中主要使用双组分显影剂，但更希望使用单组分显影剂以改善其维护。由于单组份显影剂中通常含有磁性材料，但制备彩色单组份显影剂很困难，我们研究了非磁性单组份显影剂必须具有的基本性质和条件。首先研究了可能作为单组分显影剂主要成分的聚苯乙烯、环氧树脂、聚乙烯等聚合物粉体的电学性能。研究发现，聚乙烯醇、聚氯乙烯、尼龙等聚合物不能长时间保持电荷。而聚乙烯、环氧树脂、聚四氟乙烯等高分子粉末可以保持电荷数天以上。其次，对由聚合物和颜料组成的粉末的电性能进行了表征。这些粉末中的摩擦电荷量在1 - 10 C/g的范围内<micrn>。电性能与主要聚合物相似，例如，由聚氯乙烯和颜料组成的电性能不能长时间保持电荷。认为聚乙烯、环氧树脂等是单组分显影剂的主要聚合物。

项目成果

竹内学他: Proc.XIth Int.Cong.Electron Microscopy. II. 1449-1450 (1986)

Manabu Takeuchi 等人：Proc.XIth Int.Cong.Electron Microscopy II。

竹内学: 茨城大学工学部研究集報. 35. (1987)

竹内学：茨城大学工学部研究报告35。（1987）

M. Takeuchi, et al: "Frictional Electrification of Ferrite Carriers" Proc.Japan Hardcopy '88. (1988)

M. Takeuchi 等人：“铁氧体载体的摩擦起电”Proc.Japan Hardcopy 88。