Method of inkjet printing

Details Method of inkjet printing Method of inkjet printing

2011-03-08

2011-03-08

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S043000

Reexamination Certificate

active

07901024

ABSTRACT:
A method of inkjet printing includes using a grayscale inkjet print head. The inkjet print head is driven driving to eject a number of successive ink droplets from the ink chamber in accordance with print tone data provided to the grayscale print head, the number of successive ink droplets forming a multiple-droplet drop creating a printed dot of appropriate tone on the receiving medium. The method includes the step of excluding print tone data corresponding with the ejection of a single-droplet drop from being provided to the grayscale print head. A preferred embodiment includes the removal of this print tone data from the data provided to the grayscale print head. A more preferred embodiment includes applying a multilevel halftoning technique for avoiding the use of print tone data corresponding with a single-droplet drop during the generation of the print tone data for inkjet printing the image with the grayscale print head.

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patent: 1 524 117 (2005-04-01), None
Official Communication issued in International Patent Application No. PCT/EP2007/060645, mailed on Feb. 8, 2008.
“Partial Dot Overlap Method for Grey Scale Printing”, IBM Technical Disclosure Bulletin, vol. 36, No. 2, Feb. 1993, pp. 269-271.

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