Ink jet printing apparatus and print head recovery method

A recovery method, print head technology, applied in printing and other directions, to achieve the effect of improving performance

Inactive Publication Date: 2012-09-26
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the heating operation does not lead to an increase in the complexity of the overall device, or to higher costs and an increase in the amount of wasted ink, as the suction operation does, the above heating operation is Demonstrated low level of performance in removing air bubbles attached to the tip of the nozzle

Method used

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  • Ink jet printing apparatus and print head recovery method
  • Ink jet printing apparatus and print head recovery method
  • Ink jet printing apparatus and print head recovery method

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no. 1 example

[0043] Figure 1 ~ Figure 13B Shows the first embodiment of the present invention. The first embodiment of the present invention will be explained in the following four separate sections: the mechanical structure of the printing apparatus, the structure of the control system in the printing apparatus, the structure of the head cartridge, and the recovery operation.

[0044] Mechanical structure of printing equipment

[0045] figure 1is a schematic perspective view of a serial inkjet printing device to which the present invention can be applied. This serial type inkjet printing apparatus forms an image on a printing medium P by repeating a printing scanning operation of the inkjet printing head 102 and a feeding operation of the printing medium P. The print scan operation is an operation of causing the print head 102 to discharge ink from its nozzle openings while moving the print head 102 in the main scan direction indicated by an arrow X (main scan). The feeding operat...

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Abstract

An ink jet printing apparatus and a print head recovery method are provided which effectively execute a preliminary ejection to eject ink not contributing to image printing from nozzle opening of the print head to maintain the ink ejection performance in good condition. The ink in the print head is heated to a first temperature, at which a first preliminary ejection is executed. Then, when the ink temperature falls to a second temperature, which is lower than the first temperature, a second preliminary ejection is executed.

Description

technical field [0001] The present invention relates to an inkjet printing apparatus for printing an image using an ink discharge print head and a recovery method for keeping the ink discharge performance of the print head in a good state. Background technique [0002] Conventionally, a recovery operation for keeping ink discharge from nozzle openings of a print head in a normal state has been performed in an inkjet printing apparatus. This recovery operation can discharge viscous ink and fine ink bubbles from the print head, and remove foreign matter and ink mist adhering to the surface of the print head on which the nozzle openings are formed. For example, a recovery operation including a suction operation, a pre-discharging operation, a wiping operation, and a heating operation is known. [0003] Ink bubbles, especially ink bubbles formed in the nozzle openings of the print head, may cause ink discharge abnormalities such as ink discharge failure, deflection of ink disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/165B41J2/05
CPCB41J2/04563B41J2/0458B41J2/04588B41J2/04528B41J2/04598
Inventor 山本和歌子神田英彦田中宏和大贯宪一
Owner CANON KK
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