Invention Grant
US08995026B2 Image reading apparatus with correction using diffuse reflection surface and image forming apparatus with same
有权
具有使用漫反射面校正的图像读取装置和具有该反射面的图像形成装置
- Patent Title: Image reading apparatus with correction using diffuse reflection surface and image forming apparatus with same
- Patent Title (中): 具有使用漫反射面校正的图像读取装置和具有该反射面的图像形成装置
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Application No.: US13915423Application Date: 2013-06-11
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Publication No.: US08995026B2Publication Date: 2015-03-31
- Inventor: Masafumi Takahashi
- Applicant: Canon Kabushiki Kaisha
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2012-140637 20120622
- Main IPC: H04N1/40
- IPC: H04N1/40 ; H04N1/401 ; H04N1/407
Abstract:
An image reading apparatus includes: an image reading unit which has a light source irradiating light to a sheet conveyed along reading glass, and an image reading element reading an image by reflected light from the sheet; a conveyance guide portion which guides the sheet and which is disposed in a position, that corresponds to the image reading unit, with the reading glass interposed between the conveyance guide portion and the image reading unit; a correction unit which corrects image information obtained by reading the sheet by the image reading unit based on reflected light that is emitted from the light source and reflected on the conveyance guide portion; and the conveyance guide portion which has a diffuse reflecting surface diffusing and reflecting the light from the light source.
Public/Granted literature
- US20130342876A1 IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS Public/Granted day:2013-12-26
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