Inventor
MAMIZUKA MITSURU
JP12 patents
Patents
12 patentsUS4933727AJun 12, 1990
Color recording apparatus
RICOH KK72 citations96
US5121170AJun 9, 1992
Device for transporting sheet members using an alternating voltage
RICOH KK72 citations95
US6061144AMay 9, 2000
Color image forming apparatus having function for correcting image density when image development system is deteriorated
RICOH KK31 citations92
US4690542ASep 1, 1987
Color copying apparatus
RICOH KK28 citations92
US4664501AMay 12, 1987
Method of and apparatus for producing duplicates in color
RICOH KK29 citations92
US4662739AMay 5, 1987
Method of controlling copying machine operation
RICOH KK26 citations92
US5160969ANov 3, 1992
Image forming apparatus having a separate black developer stored for a color image
RICOH KK52 citations91
US4796050AJan 3, 1989
Mechanism for driving photosensitive drums
RICOH KK43 citations89
US4987428AJan 22, 1991
Color image forming apparatus
RICOH KK9 citations74
US4746950AMay 24, 1988
Color copier
RICOH KK13 citations74
US5825398AOct 20, 1998
Image forming apparatus using a synchronized transfer medium driver
RICOH KK10 citations73
US5631691AMay 20, 1997
Image forming apparatus
RICOH KK14 citations73