Patent Number: 6,332,662

Title: Technique for improving printing quality

Abstract: A method for efficiently compensating for malfunctioning nozzles in a printhead. A print order is input, malfunctioning nozzles on a printhead are identified, and, in the case malfunctioning nozzles are present, compensation printing occurs to optimize print quality. The detecting of malfunctioning nozzles includes printing a test pattern, scanning the test pattern, comparing the scanned test pattern to an ideal test pattern, and then identifying the locations of malfunctioning nozzles. In the case that only one nozzle is malfunctioning, the number of nozzles used to scan a line of print is reduced by two so that compensation printing can correct two lines of print with one single swath.

Inventors: Choi; Seung-Young (Kyungki-do, KR)

Assignee: SamSung Electronics., Ltd.

International Classification: B41J 29/393 (20060101); B41J 029/393 ()

Expiration Date: 12/25/2018