Photocopying – Contact printing – Light boxes
Patent
1995-06-20
1996-09-17
Beatty, Robert
Photocopying
Contact printing
Light boxes
118661, G03G 1506
Patent
active
055573800
ABSTRACT:
An apparatus for developing an electrostatic latent image includes a developing agent application device which holds the developing agent on the surface thereof in the developing agent-holding zone, and conveys the thus held developing agent into a developing zone to apply it onto the electrostatic latent image. A limiting device is included for limiting the amount of the developing agent held on the surface of the developing agent application device in a developing agent limiting zone located between the developing agent holding zone and the developing zone. The limiting device includes a blade made of a rigid member that is brought into forced contact with the surface of the developing agent application device, a blade support device for supporting the blade in a manner such that a first surface thereof is forced into contact with the surface of the developing agent application device, and a resilient urging device which is disposed on a side of a second surface of the blade. The blade support device includes lower support members for supporting the lower end at the blade. The application device has an Asker C hardness between 67 to 85, the blade exerts a line pressure of 40 to 90 g/cm, and the developing agent thickness is limited in the range of 20 to 27 .mu.m.
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Patent Abstracts of Japan, vol. 14, No. 158 (P-1027), to Matsushita Electric Ind. Co., Ltd., dated Mar. 27, 1990 02-015287.
Kitajima Ken-ichiro
Maeda Masahiko
Nakashima Masayuki
Tomita Shoji
Uyama Masao
Beatty Robert
Mita Industrial Co. Ltd.
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