EP 1536371 B1 20070502 - Method of camouflaging defects of printing elements in a printer
Title (en)
Method of camouflaging defects of printing elements in a printer
Title (de)
Verfahren, um Defekte von Druckelementen eines Druckers zu tarnen
Title (fr)
Procédé de camoufler les défauts des éléments d'impression dans une imprimante
Publication
Application
Priority
- EP 04106008 A 20041123
- EP 03078754 A 20031127
Abstract (en)
[origin: EP1536371A1] A method of camouflaging defective print elements in a printer having a printhead with a plurality of print elements, wherein each pixel of the image is assigned to a print element with which it is to be printed, and image information of a pixel that is assigned to a defective print element is shifted to a nearby pixel position where it can be printed with a non-defective print element, characterised by the steps of: a) encoding the image information to be printed as a multi-level pixel matrix (38) in which one of a plurality of predetermined pixel values ("0", "1 ", "2") is assigned to each pixel and at least one of said predetermined pixel values is a conditional pixel value ("1") encoding a print instruction that depends upon whether or not a neighbouring pixel corresponds to a defective print element, b) determining defective print elements of the printer, and c) executing said print instruction. <IMAGE>
IPC 8 full level
G06K 15/00 (2006.01); B41J 2/165 (2006.01); B41J 2/21 (2006.01)
CPC (source: EP)
B41J 2/2139 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04106008 A 20041123