Title:
BOUNDARY VALUE TABLE OPTIMIZATION DEVICE, BOUNDARY VALUE TABLE SETTING DEVICE, LIQUID DISCHARGE HEAD, LIQUID DISCHARGE DEVICE, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2007/119686
Kind Code:
A1
Abstract:
The method for greatly correcting a gradation value by a gradation correction
unit significantly reduces the number of gradations which can be reproduced.
An information storage unit of a liquid discharge head capable of expressing
one pixel by a multi-start droplet contains information for selecting a boundary
table for multi-value error diffusion for each discharge condition. When a
liquid discharge head is mounted, the selection information matching the discharge
condition is read out and the boundary value table corresponding to the selection
information is set for reference of a half-toning unit. Thus, it is possible
to optimize the boundary value table and correct the gradation characteristic
without significantly reducing the number of gradations which can be reproduced.
Inventors:
KUWAHARA SOICHI (JP)
Application Number:
PCT/JP2007/057673
Publication Date:
October 25, 2007
Filing Date:
April 05, 2007
Export Citation:
Assignee:
SONY CORP (JP)
KUWAHARA SOICHI (JP)
KUWAHARA SOICHI (JP)
International Classes:
B41J2/52; B41J2/01; B41J2/205; G06T1/00; H04N1/40; H04N1/52
Foreign References:
| JP2005252633A | 2005-09-15 | |||
| JP2002252775A | 2002-09-06 |
Attorney, Agent or Firm:
NAKAMURA, Tomoyuki (Toranomon Kotohira Tower 2-8, Toranomon 1-chome, Minato-k, Tokyo 01, JP)
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