The Paper's Abstract of The 3rd
International Conference on Imaging Science and Hardcopy
　

　

Influence of toner particle shapes and sizes on characteristics of nonmagnetic monocomponent developing process

 　
　 　

May 26-29,1998
Chongqing China

Chiseki Yamaguchi
PPC Engineering & Production Division, NEC Niigata Ltd.
1-10 Nisshincho, Fucyu, Tokyo 183, Japan
Phone: +81-423-33-1676  Fax: +81-423-33-1783   E-mail: yamagchi@ppc.fc.nec.co.jp
Manabu Takeuchi
 Department of Electrical and Electric Engineering, Ibaraki University
4-12-1 Nakanarusawa, Hitachi, Ibaraki 316, Japan

　 Abstract:
　      The influence of toner particle shapes and sizes on developing characteristics of nonmagnetic monocomponent toners was studied Five kinds of toners with different particle shapes and sizes were prepared in this study, two irregular, two quasispherical and one spherical ones. The quasi spherical toners were prepared by modifying the irregular toners. The spherical toners were prepared by suspension polymerization. In addition to a conventional irregular toner, another irregular toner made from the spherical toners was prepared because the preparation method and materials of the spherical toners were different from other shape toners.   Characteristics of the nonmagnetic monocomponent developing process was evaluated by properties of the toner layer and development characteristics of the toner layer. Toner mass feed on the developing roller increased with approaching the toner shape to spherical. The spherical toners had the largest charging values among all the toners. The mass of the irregular toner remained on the developing roller after the developing step was more than those of other shape toners even under higher electric developing field. Developing characteristics of fine and quasispherical toners approached the theoretical one. The toner layer consisting of the polymerization spherical toners was developed in proportion to the electric filed at lower electric developing field.

　

中国复印科学与工程学会
Reprographic Scientists and Engineers Society of China 
7 Chang-Tu Rd.Tianjin300131,China  Tel:(22)26669189 Fax: (22)26669189 
E-mail: rsesc@public.tpt.tj.cn
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