Developing device for an image forming apparatus

Details Developing device for an image forming apparatus Developing device for an image forming apparatus

1994-12-28

1996-09-03

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

118653, G03G 1508, G03G 1506

Patent

active

055528708

ABSTRACT:
A developing device for an image forming apparatus and using a single component type developer, i.e., toner, has a developing roller, a doctor blade, and an elastic intermediae roller. The developing roller and intermediate roller contact each other and rotate in the same directions such that they move in opposite directions at the position where they contact each other. The developing roller is provide with a surface roughness of Rz 10 .mu.m or less in terms of ten-point mean value as prescribed by JIS (Japanese Industrial Standards) in order to deposit an adequate charge on toner.

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patent: 5486909 (1996-01-01), Takenaka et al.

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