Halftone proofing with inkjet printers

Details Halftone proofing with inkjet printers Halftone proofing with inkjet printers

2007-11-06

2007-11-06

Grant, II, Jerome (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Plotter

C358S003060, C358S003300, C358S502000, C358S001160, C347S001000

Reexamination Certificate

active

11122260

ABSTRACT:
Techniques are described for preparing halftone bitmap images for printing on inkjet printers. The techniques may involve exclusive use of low-density inks to reproduce highlight colors and means for reducing the amount of ink applied to the page within “solid” areas while maintaining complete coverage of these areas. The techniques may rely on the high addressability and larger ink palette of recent inkjet printers. For example, some inkjet printers offer seven ink channels: low and high density inks for the cyan, magenta, and black channels, and a single high-density yellow ink. In one embodiment, halftone dots within a bitmap image are separated into perimeter data and core data. The perimeter data is then associated with a low-density ink channel and the core data is associated with a high-density ink channel.

REFERENCES:
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patent: 1 365 574 (2003-11-01), None
J.C. Russ, The Image Processing Handbook, Fourth Edition, CRC Press 2002, pp. 409, 410,425-431.

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