Invention Grant
US09444974B2 Printing system for printing patches having different length to measure gradation values
有权
用于打印具有不同长度的贴片的打印系统来测量灰度值
- Patent Title: Printing system for printing patches having different length to measure gradation values
- Patent Title (中): 用于打印具有不同长度的贴片的打印系统来测量灰度值
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Application No.: US12970566Application Date: 2010-12-16
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Publication No.: US09444974B2Publication Date: 2016-09-13
- Inventor: Yuki Omagari , Mitsuru Uratani , Yuki Ishida , Seiji Abe , Masaaki Obayashi
- Applicant: Yuki Omagari , Mitsuru Uratani , Yuki Ishida , Seiji Abe , Masaaki Obayashi
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A. Inc., IP Division
- Priority: JP2009-290105 20091222
- Main IPC: H04N1/60
- IPC: H04N1/60 ; H04N1/00
Abstract:
According to the present invention, patch data is printed in such a manner that the length of a low-optical-density patch is small and the length of a high-optical-density patch is large. In addition, the measurement is performed by a sensor that measures at a constant scanning speed. Therefore, SN of a dark patch having a high optical density is improved, and a patch chart can be measured in a short time.
Public/Granted literature
- US20110149316A1 PRINTING SYSTEM, PRINTING METHOD, IMAGE PROCESSING SYSTEM, AND IMAGE PROCESSING METHOD Public/Granted day:2011-06-23
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