Invention Grant
- Patent Title: Load abnormality detection apparatus performing accurate judgment of cause of abnormality
- Patent Title (中): 负载异常检测装置执行异常原因的准确判断
-
Application No.: US13975477Application Date: 2013-08-26
-
Publication No.: US08855512B2Publication Date: 2014-10-07
- Inventor: Yuusuke Ishizaki
- Applicant: Yuusuke Ishizaki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JP2010-063209 20100318; JP2011-038084 20110224
- Main IPC: G03G15/00
- IPC: G03G15/00 ; H02P29/02 ; G03G15/16 ; H02P5/00 ; G03G15/01 ; H02P5/46

Abstract:
A load abnormality detection apparatus includes first and second rotational members that contact each other directly or via a recording medium interposed therebetween, a first motor that drives the first rotational member and is controlled by a first drive current and a second motor that drives the second rotational member and is controlled by a second drive current. The load abnormality detection apparatus further includes a current detection part configured to detect the first and second drive currents, a first judgment part configured to judge whether the first drive current is within a first range, a second judgment part configured to judge whether the second drive current is within a second range and an abnormality detection part configured to detect a load abnormality of the first and/or second rotational members and identify a cause of the load abnormality based on results from the first and second judgment parts.
Public/Granted literature
- US20130343772A1 LOAD ABNORMALITY DETECTION APPARATUS PERFORMING ACCURATE JUDGMENT OF CAUSE OF ABNORMALITY Public/Granted day:2013-12-26
Information query