Invention Grant
- Patent Title: Endless belt unit, image forming apparatus, and method of driving and controlling belt member
- Patent Title (中): 无端带单元，成像设备和带构件的驱动和控制方法
-
Application No.: US10701428Application Date: 2003-11-06
-
Publication No.: US07076195B2Publication Date: 2006-07-11
- Inventor: Yoshihiro Sakai
- Applicant: Yoshihiro Sakai
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2002-322577 20021106; JP2003-341056 20030930
- Main IPC: G03G15/01
- IPC: G03G15/01
Abstract:
A belt unit includes a belt member, scale marks, a scale mark detector, a reference mark, and a reference mark detector. The belt member makes an endless movement while being stretched by stretching members. The scale mark detector detects the scale marks, and the reference mark is provided at a predetermined position on the surface of the belt member. The reference mark detector detects whether the reference mark is present at the predetermined position.
Public/Granted literature
- US20040141775A1 Endless belt unit, image forming apparatus, and method of driving and controlling belt member Public/Granted day:2004-07-22
Information query
