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Method and apparatus to execute a spitting service on a wide array print head of an image forming apparatus

A dot-matrix printing and printing head technology, applied in printing devices, printing, etc., can solve problems such as drawing errors and image quality deterioration

Inactive Publication Date: 2007-03-14
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the ink on the nozzle dries up, the ink absorption changes due to the change in the ink density, resulting in poor image quality
Also, if the ink dries too quickly, wicking errors may occur

Method used

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  • Method and apparatus to execute a spitting service on a wide array print head of an image forming apparatus
  • Method and apparatus to execute a spitting service on a wide array print head of an image forming apparatus
  • Method and apparatus to execute a spitting service on a wide array print head of an image forming apparatus

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Embodiment Construction

[0039] Embodiments of the invention, examples of which are illustrated in the accompanying drawings, will now be described in detail, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0040] FIG. 1 is a flow chart showing a spraying operation method of a wide dot matrix print head in an image forming apparatus according to an embodiment of the present invention. In the wide dot-matrix print head of the image forming apparatus, a plurality of print heads are arrayed along its longitudinal direction. Each of the plurality of printheads includes a plurality of nozzles. The arrangement of nozzles and printheads on a wide dot matrix printhead is shown in FIG. 11 .

[0041] Fig. 11 is a plan view of a wide dot matrix print head of an inkjet image forming apparatus. FIG. 12 is a cross-sectional view showing one of the plurality of nozzles of the wide-matrix pr...

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PUM

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Abstract

A method and apparatus to perform a spitting service on a wide array print head includes detecting dot counts of print heads after a predetermined page is printed, determining spitting service levels corresponding to the detected dot counts, and executing spitting services for the print heads according to the spitting service levels. Accordingly, spitting services of a plurality of print heads of the wide array print head can be classified into several levels for execution, so that the print heads can maintain an optimum condition and provide a best printing quality, and unnecessary ink consumption can be reduced.

Description

[0001] Cross Reference Related Applications [0002] This application claims priority under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2005-0084242 filed with the Korean Intellectual Property Office on September 9, 2005, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to imaging devices, and more particularly to methods and apparatus for performing spitting services on printheads of imaging devices including wide dot matrix printheads. Background technique [0004] The printhead operates by wiping its nozzles for optimal printing, or by wicking ink to keep the nozzles from drying out. [0005] There are three main types of used manipulation methods. [0006] The first type of operation method is a method of collectively performing an operation when the dot count of each color reaches a predetermined number. In this method, operations are performed irrespective of whether printing is in progress or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J29/38B41J2/07
CPCB41J2/155B41J2/16585B41J2/16526B41J2002/1657
Inventor 李贞和金政焕
Owner SAMSUNG ELECTRONICS CO LTD