The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2009
Filed:
Sep. 13, 2006
Terekhov Vladislav, Suwon-si, KR;
Ki-min Kang, Seongnam-si, KR;
Terekhov Vladislav, Suwon-si, KR;
Ki-min Kang, Seongnam-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method and apparatus for compensating for a defective nozzle in an inkjet image forming apparatus are provided, in which a defective nozzle of a nozzle unit is detected, ejecting statuses of nozzles of the nozzle unit are checked which eject ink at a compensation position on a printing medium corresponding to the defective nozzle and nozzles of the nozzle unit which eject ink at positions adjacent to the compensation position when the defective nozzle is detected, and at least three pieces of image data to be printed at the compensation position and the adjacent positions are swapped and printed according to the ejecting statuses of the nozzle. Accordingly, the image data are swapped for each other in order to be printed or divided and then printed. Thus, image quality degradation such as a visible white line can be prevented.