Developing device

Details Developing device Developing device

1980-04-10

1983-03-22

Witkowski, S. J.

Photocopying

Including fiber optics

355 14D, 118658, 427 141, 430122, G03G 1509

Patent

active

043773320

ABSTRACT:
To form an irregularity-free thin layer of developer on a developer supporting member, the surface of the developer supporting member is formed with concavo-convexities along the conveyance direction thereof. To eliminate any irregularity of the developer layer on the developer supporting member and to sufficiently impart charge to the developer by the friction between the developer and the supporting member, the concavo-convexities should preferably have a pitch of 5-100.mu., a concavity depth d of 0.2-10.mu. and a concavity width W of 2d-3d. The concavo-convexities should desirably be rounded rather than sharp.

REFERENCES:
patent: 2910963 (1959-11-01), Herman
patent: 3863603 (1975-02-01), Buckley et al.
patent: 3909258 (1975-09-01), Kotz
patent: 4018187 (1977-04-01), Abbott et al.
patent: 4200665 (1980-04-01), Suzuki et al.
patent: 4218691 (1980-08-01), Fujii
patent: 4240740 (1980-12-01), Young

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