Inventor
YASUDA WATARU
JP13 patents
Patents
13 patentsUS4656964AApr 14, 1987
Developing device
RICOH KK27 citations92
US4624545ANov 25, 1986
Developing device with regulated developer supply
RICOH KK26 citations92
US4575220AMar 11, 1986
Developing device
RICOH KK27 citations92
US4564285AJan 14, 1986
Developing device having dispersed floating electrodes in a dielectric layer
RICOH KK48 citations92
US5678129AOct 14, 1997
Image forming apparatus with contact type charging member
RICOH KK20 citations91
US5749022AMay 5, 1998
Charging apparatus and method for use in image forming device
RICOH KK36 citations89
US4625676ADec 2, 1986
Developing device
RICOH KK15 citations82
US4561381ADec 31, 1985
Voltage-controlled developing device
RICOH KK22 citations82
US4528937AJul 16, 1985
Device for forming a developer film
RICOH KK26 citations82
US4896625AJan 30, 1990
Developing device
RICOH KK13 citations73
US4674439AJun 23, 1987
Developing device
RICOH KK13 citations73
US5258248ANov 2, 1993
Image density control method for an image forming apparatus
RICOH KK12 citations72
US5028960AJul 2, 1991
Image density control method for an image forming apparatus
RICOH KK4 citations61