Inventor
YAHATA MASASUMI
JP10 patents
Patents
10 patentsUS6118951ASep 12, 2000
Image forming apparatus and toner replenishing device therefor
RICOH KK131 citations96
US6091912AJul 18, 2000
Tower supplying device and image forming apparatus using same toner supplying device
RICOH KK104 citations96
US5950062ASep 7, 1999
Toner sorting device for separating reusable toner from used toner and image forming apparatus using the same device
RICOH KK84 citations95
US6151471ANov 21, 2000
Toner supplying device, method and image forming apparatus using the same toner supplying device or method
RICOH KK69 citations94
US5909609AJun 1, 1999
Image forming apparatus with provisions for supplying toner therein
RICOH KK84 citations94
US5202732AApr 13, 1993
Developing device for image forming equipment
RICOH KK38 citations92
US6097903AAug 1, 2000
Toner supplying device, toner container therefor and image forming apparatus using same toner supplying device and toner container
RICOH KK53 citations91
US5414499AMay 9, 1995
Developing device for image forming apparatus having improved air/toner filtering
RICOH KK13 citations73
US5260749ANov 9, 1993
Toner cartridge
RICOH KK10 citations73
US4982223AJan 1, 1991
Developer guide for preventing developer from entering gap between developing sleeves
RICOH KK2 citations62