Ink jet image forming apparatus, and method for compensating defective nozzle thereof

A technology of imaging devices and nozzles, applied in printing devices, visual representation of matrix printers, printing, etc., can solve problems such as poor printing quality
CN1939729AInactive Publication Date: 2007-04-04SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Publication Date
2007-04-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention relates to an inkjet image forming apparatus and a method of compensating for defective nozzles in the inkjet image forming apparatus. By analyzing the ejection state of the nozzles ejecting ink at the compensation position and the positions adjacent to the compensation position, the compensation position is the position printed with the defective nozzle, and according to the ejection state of the nozzle, by the ejection and compensation position. Ink of different color from the ink of the defective nozzle mixes the ink ejected at the adjacent position to the compensation position to compensate the defective nozzle. Therefore, ink dots lost by defective nozzles can be compensated, so that deterioration of image quality, which is easily perceived by the user, such as leucorrhea, can be avoided. In addition, the compensation effect can be improved by adjusting the jetting quantity or chromaticity of ink jetted at or near the compensation position.
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Description

[0001] This application claims priority under 35 U.S.C Β§119(a) to Korean Patent Application No. 10-2005-0090708 filed with the Korean Intellectual Property Office on September 28, 2005, the full disclosure of which is at Introduced here for reference. technical field

[0002] The present invention relates to an inkjet imaging device. More particularly, it relates to an inkjet image forming apparatus that can compensate for image quality deterioration due to occurrence of defective nozzles, and a method for compensating for occurrence of defective nozzles in the inkjet image forming apparatus. Background technique

[0003] In general, an inkjet image forming device is a device that ejects ink to form an image using a print head that is separated from a print medium by a predetermined interval and that reciprocates in a direction perpendicular to a conveying direction of the print medium. Such an inkjet imaging device that uses a printing head to spray ink on a printing mediu...

Claims

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