Title:
DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2014145910
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a developing device capable of improving toner conveyability, sticking resistance, and filming resistance of a developing roller.SOLUTION: A developing device comprises: a toner with the aggregation degree of 50 to 90%; and a developing roller that rotates while carrying the toner. The developing roller comprises, on the surface: a plurality of streak-like groove parts extending in a circumferential direction; and a plurality of step parts extending in a rotation shaft direction.
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Inventors:
YASUNAGA HIDEAKI
SHIGESATO KEIICHIRO
SHIGESATO KEIICHIRO
Application Number:
JP2013014412A
Publication Date:
August 14, 2014
Filing Date:
January 29, 2013
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
G03G15/08; G03G21/18
Domestic Patent References:
| JP2004157276A | 2004-06-03 | |||
| JP2005266203A | 2005-09-29 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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