Photocopying – Including fiber optics
Patent
1986-05-09
1988-03-15
Grimley, Arthur T.
Photocopying
Including fiber optics
118653, G03G 1509
Patent
active
047316322
ABSTRACT:
The present invention relates to a toner development device for an electrophotographic copying machine and aims to attain a reproduced image without uneven thickness by stirring developers composed of toner and carrier and feeding the developers mixed uniformly in the longitudinal direction along a photosensitive drum. An electrostatic latent image produced on the photosensitive drum is made to be visible in contact with the developers retained in a brushlike state by magnetic force of a magnet roller thereon. The developers, of which a part of the toner is spent, is scraped off by the primary scraper of a scraping means, which is arranged so as to contact slidingly with the magnet roller. To the primary scraper, the secondary scraper is fixed for its fixed position to be adjusted forwards and rearwards in order to distribute the toner uniformly in the toner development device. The developers scraped off can be returned more to somewhat insufficient portions and less to somewhat excessive portions in a stirring means composed of a plurality of screw rollers through the outer edge of the secondary scraper of which position adjusted accordingly.
REFERENCES:
patent: 4044719 (1977-08-01), Ohmori
patent: 4173405 (1979-11-01), Swapceinski et al.
Bessho Yoshihiko
Fukushima Masao
Nishikawa Masao
Yamaguchi Yasunari
Dainippon Screen Mfg. Co,. Ltd.
Grimley Arthur T.
Pendegrass J.
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