Invention Grant
- Patent Title: Minimizing dot graininess in dot-on-dot printing devices
- Patent Title (中): 最小化点对点打印设备的点粒度
-
Application No.: US12178960Application Date: 2008-07-24
-
Publication No.: US08179568B2Publication Date: 2012-05-15
- Inventor: Zhen He
- Applicant: Zhen He
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fleit Gibbons Gutman Bongini & Bianco P.L.
- Agent Philip E. Blair
- Main IPC: G06F15/00
- IPC: G06F15/00 ; G06K9/00

Abstract:
What is disclosed is a novel system and method for minimizing dot visibility in color marking devices capable of dot-on-dot printing. The present method achieves minimum dot visibility for a given dispersed-dot screen by performing a CMYK to CMYKRGB conversion which uses less visible dots as much as possible before more visible dots are introduced. The output color dot coverages are calculated sequentially to minimize the coverage of more visible dots in a decreasing order of brightness. Resulting images have noticeably reduced halftone graininess, particularly in the mid to darker tone areas. The present method is also computationally efficient.
Public/Granted literature
- US20100020339A1 MINIMIZING DOT GRAININESS IN DOT-ON-DOT PRINTING DEVICES Public/Granted day:2010-01-28
Information query