- Patent Title: Image processing apparatus for primary color and spot halftoning
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Application No.: US15460544Application Date: 2017-03-16
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Publication No.: US10477068B2Publication Date: 2019-11-12
- Inventor: Yuuki Sagimori , Akiho Watanabe
- Applicant: Yuuki Sagimori , Akiho Watanabe
- 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: JP2016-055748 20160318; JP2017-002759 20170111
- Main IPC: H04N1/405
- IPC: H04N1/405 ; H04N1/52 ; H04N1/60

Abstract:
An image processing apparatus includes processing circuitry. The processing circuitry is to acquire image data including primary color image data for primary color and spot color image data for spot color; generate primary color halftone data representing the primary color image data as a group of halftone dots, using a primary color screen specifying cyclic arrangement of lines of halftone dots; and generate spot color halftone data representing the spot color image data as a group of halftone dots, using a spot color screen having a second phase that is different from a first phase represented by the cyclic arrangement of lines specified in the primary color screen.
Public/Granted literature
- US20170272611A1 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM Public/Granted day:2017-09-21
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