Invention Grant
- Patent Title: Image forming apparatus, image forming system, and calibration method
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Application No.: US15920640Application Date: 2018-03-14
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Publication No.: US10389919B2Publication Date: 2019-08-20
- Inventor: Ryotaro Miwa
- Applicant: Ryotaro Miwa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2017-055140 20170321
- Main IPC: H04N1/60
- IPC: H04N1/60 ; H04N1/00 ; G03G15/00 ; G03G15/01 ; G01J3/50

Abstract:
An image forming apparatus includes an image forming section to form a correction pattern, a reading unit to read the pattern and generate first data, a color converter to convert the first data into second data, a memory to store density conversion data for a recording medium, a determiner to determine whether the memory contains the conversion data for the recording medium the pattern is formed, an acquisition unit to acquire spectral measured by an external colorimeter the memory does not contain the conversion data, a first density converter to convert the spectral data into density data, a density conversion data generator to correlate the second data and the density data and generate the conversion data, a second density converter to convert the second data into the density data using the conversion data, and a correction curve generator to generate correction curve data based on the density data.
Public/Granted literature
- US20180278807A1 IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND CALIBRATION METHOD Public/Granted day:2018-09-27
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