Photocopying – Contact printing – Light boxes
Patent
1993-06-23
1995-01-24
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
355204, 355245, G03G 1506
Patent
active
053846290
ABSTRACT:
Disclosed are a developer cartridge designed to permit discrimination of whether the cartridge is used or unused, and an image forming apparatus using this cartridge. The developer cartridge comprises a cylindrical body whose rotational axis extends in a direction perpendicular to a developer carrying direction of the developing unit; a first developer storage room, provided at the cylindrical body, for storing an unused developer; an opening formed in the first developer storage room; a case having a cylinder for rotatably retaining the cylindrical body, the cylinder having an injection port provided in association with the opening of the first developer storage room; a second developer storage room, provided at a lower portion of the cylinder of the case, for storing a used developer from the developing unit; and setting means selectively movable to a first position indicating an unused state of the developer cartridge and a second position indicating a used state of the developer cartridge to detect if the developer cartridge is unused or used. The image forming apparatus comprising an endless latent carrier; means for forming an electrostatic latent image on the endless latent carrier; developing means for developing the electrostatic latent image on the endless latent carrier; a developer cartridge detachably attached to the developing means for exchanging developers, and having the same components as the above-described cartridge; drive means for driving the cylindrical body of the developer cartridge for developer exchange; detecting means for detecting the setting means of the developer cartridge to detect if the developer cartridge is unused or used; and a control circuit for controlling the drive means in accordance with a detection result from the detecting means.
REFERENCES:
patent: 4089601 (1978-05-01), Navone
patent: 4625895 (1986-12-01), Tsukano
patent: 4768055 (1988-08-01), Takamatsu et al.
patent: 4894688 (1990-01-01), Taniguchi et al.
patent: 4913087 (1990-04-01), Saita et al.
patent: 5084734 (1992-01-01), Yoshino et al.
patent: 5109254 (1992-04-01), Oka et al.
patent: 5121168 (1992-06-01), Aoki et al.
patent: 5260750 (1993-11-01), Ishida et al.
"Method for Exchanging Developer for Recorder," M. Kawashima et al., Patent Abstracts of Japan, vol. 16, No. 373 (P-1400), Jul. 1986.
"Toner Supervising Device for Electrophotographic Device," K. Yamada et al., Patent Abstracts of Japan, vol. 10, No. 198 (P-476), Jul. 11, 1986.
Fujii Michihiro
Watanabe Mamoru
Brase Sandra L.
Fujitsu Limited
Smith Matthew S.
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