发明申请
US20120133701A1 Position Detecting Device, Liquid Ejecting Apparatus and Method of Detecting Smear of Scale
有权
位置检测装置，液体喷射装置和检测标尺涂片的方法
- 专利标题： Position Detecting Device, Liquid Ejecting Apparatus and Method of Detecting Smear of Scale
- 专利标题（中）： 位置检测装置，液体喷射装置和检测标尺涂片的方法
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申请号： US13365863申请日： 2012-02-03
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公开(公告)号： US20120133701A1公开(公告)日： 2012-05-31
- 发明人: Satoshi Nakata , Hitoshi Igarashi
- 申请人： Satoshi Nakata , Hitoshi Igarashi
- 申请人地址： JP Tokyo
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP Tokyo
- 优先权： JP2005-277274 20050926; JP2005-277275 20050926; JP2005-281514 20050928; JP2005-295966 20051011
- 主分类号： B41J29/393
- IPC分类号： B41J29/393
摘要：
A position detecting device for detecting a position of an object, includes a light emitting portion that emits light, a light receiving portion that receives the light from the light emitting portion, and a scale that is arranged between the light emitting portion and the light receiving portion, and includes a position detecting pattern and a smear detecting pattern. The position detecting pattern has a first light transmitting portion for transmitting the light from the light emitting portion and a first light interception portion for intercepting the light from the light emitting portion which are alternately arranged in a detection range of the object. The smear detecting pattern for detecting smear of the scale has a second light transmitting portion for transmitting the light from the light emitting portion and a second light interception portion for intercepting the light from the light emitting portion which are alternately arranged.
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