Inventor
TOMITA KAN
JP23 patents
Patents
23 patentsUS5054866AOct 8, 1991
Scanning optical apparatus
RICOH KK57 citations96
US6332611B1Dec 25, 2001
Sheet conveying path switching device and image forming apparatus using the sheet conveying path switching device
RICOH KK29 citations92
US6006051ADec 21, 1999
Electrophotographic apparatus and image forming apparatus employed therein with controlled timing of a power supply
RICOH KK30 citations92
US5819136AOct 6, 1998
Temperature control for a fixing device
RICOH KK37 citations92
US5376994ADec 27, 1994
Compact BI-color electrophotographic image forming apparatus
RICOH KK36 citations92
US5357583AOct 18, 1994
Graphics processing apparatus for smoothing edges of images
RICOH KK38 citations92
US5309182AMay 3, 1994
Bicolor image forming apparatus for forming a bicolor image on a photoconductive element
RICOH KK26 citations92
US5033806AJul 23, 1991
Optical scanner
RICOH KK41 citations92
US5161047ANov 3, 1992
Optical scanner for image recording apparatus
RICOH KK28 citations91
US5550623AAug 27, 1996
Digital copying machine having selective paper feed based on copy productivity
RICOH KK35 citations90
US5325474AJun 28, 1994
Graphic output device including antialiasing capability governed by decisions regarding slope of edge data
RICOH KK34 citations90
US5999765ADec 7, 1999
Image forming apparatus and method therefor
RICOH KK16 citations74
US5852499ADec 22, 1998
Method and device for determining fiber orientation of paper, and apparatus for removing image forming substance from paper
RICOH KK11 citations74
US5729349AMar 17, 1998
Method and device for determining fiber orientation of paper, and apparatus for removing image forming substance from paper
RICOH KK9 citations74
US5440408AAug 8, 1995
Image data processing apparatus having a digital copying function and a facsimile function and including means for distinguishing a facsimile reception sheet from a copy sheet
RICOH KK10 citations74
US5179277AJan 12, 1993
Methods for optically scanning a scanned face with an equi-angular scan velocity
RICOH KK7 citations74
US5130839AJul 14, 1992
Scanning optical apparatus
RICOH KK18 citations74
US5115334AMay 19, 1992
Optical scanning device
RICOH KK14 citations74
US5099355AMar 24, 1992
Optical element having heat control means
RICOH KK8 citations74
US5493424AFeb 20, 1996
Image forming apparatus
RICOH KK9 citations70
US5337182AAug 9, 1994
Optical Scanner
RICOH KK5 citations63
US5208694AMay 4, 1993
Optical scanner
RICOH KK5 citations63
US4891711AJan 2, 1990
Document reader for a digital copier
RICOH KK6 citations63