Invention Grant
US07969622B2 Image reading apparatus, image formation apparatus, image reading method, image formation method, program for causing image reading method to be executed, and program for causing image formation method to be executed
有权
图像读取装置，图像形成装置，图像读取方法，图像形成方法，用于执行图像读取方法的程序，以及用于执行图像形成方法的程序
- Patent Title: Image reading apparatus, image formation apparatus, image reading method, image formation method, program for causing image reading method to be executed, and program for causing image formation method to be executed
- Patent Title (中): 图像读取装置，图像形成装置，图像读取方法，图像形成方法，用于执行图像读取方法的程序，以及用于执行图像形成方法的程序
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Application No.: US12922035Application Date: 2009-05-01
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Publication No.: US07969622B2Publication Date: 2011-06-28
- Inventor: Toshihiro Saika
- Applicant: Toshihiro Saika
- Applicant Address: JP Kawasaki-shi
- Assignee: Canon Components, Inc.
- Current Assignee: Canon Components, Inc.
- Current Assignee Address: JP Kawasaki-shi
- Agency: Fitzpatrick, Cella, Harper & Scinto
- International Application: PCT/JP2009/058580 WO 20090501
- International Announcement: WO2010/125693 WO 20101104
- Main IPC: H04N1/04
- IPC: H04N1/04
Abstract:
In the so-called sky-shot in which reading is performed with a platen cover (32) open, an output signal of a read image is compared with a white reference value generated from a white reference member (40). Only if a value greater than or equal to the white reference value exists in the output signal of the read image, a reading operation to be performed with a light source unit in an image sensor unit (33) turned off during an original (34) reading operation is added to each scan line reading operation.
Public/Granted literature
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