Invention Grant
- Patent Title: Utilizing luminance variation of the white area of the tone chart in tone correction
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Application No.: US17319998Application Date: 2021-05-13
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Publication No.: US11265447B2Publication Date: 2022-03-01
- Inventor: Masanori Matsuzaki
- Applicant: CANON KABUSHIKI KAISHA
- 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: JPJP2020-098732 20200605
- Main IPC: H04N1/60
- IPC: H04N1/60 ; H04N1/00 ; H04N1/407
Abstract:
An image forming apparatus outputs a tone chart for calibration by a printer, reads the output tone chart by a scanner, determines whether data on a sheet is affected by a surface shape of the sheet based on the read tone chart, corrects data on a white area of the read chart based on a result of the determination, and executes calibration using the corrected data.
Public/Granted literature
- US20210385341A1 IMAGE FORMING APPARATUS AND CONTROL METHOD OF IMAGE FORMING APPARATUS Public/Granted day:2021-12-09
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