Invention Grant
- Patent Title: Pulse generating device, rotator module, rotational speed control device, and image forming apparatus
- Patent Title (中): 脉冲发生装置，转子模块，转速控制装置和成像装置
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Application No.: US12876752Application Date: 2010-09-07
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Publication No.: US08410743B2Publication Date: 2013-04-02
- Inventor: Tatsuya Watahiki
- Applicant: Tatsuya Watahiki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-208465 20090909
- Main IPC: H02P1/26
- IPC: H02P1/26
Abstract:
A pulse generating device includes a rotatable disc having a plurality of patterns that are formed on a surface of the rotatable disc in a circumferential direction of the rotatable disc, and three pulse generators to each detect the plurality of patterns formed on the rotatable disc and to respectively generate three pulse signals each corresponding to a rotational speed of the rotatable disc based on the detected patterns. The three pulse generators are evenly spaced at intervals of 120 degrees of angle with respect to a rotational axis of the rotatable disc in the circumferential direction of the rotatable disc.
Public/Granted literature
- US20110057822A1 PULSE GENERATING DEVICE, ROTATOR MODULE, ROTATIONAL SPEED CONTROL DEVICE, AND IMAGE FORMING APPARATUS Public/Granted day:2011-03-10
Information query
