Photocopying – Contact printing – Light boxes
Patent
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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Endoh Shuichi
Hosokawa Hiroshi
Komatsubara Satoru
Matsumae Iwao
Murakami Eisaku
Ricoh & Company, Ltd.
Smith Matthew S.
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