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Printing apparatus and maintenance method thereof

A technology of printing device and state, which is applied in printing and other directions to achieve the effect of refining the image quality improvement effect and cost, and reducing the amount of ink

Active Publication Date: 2011-09-21
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In Patent Document 3, although different maintenance actions are performed according to the ejection state of the ink, there is no criterion for judging the different ejection states depending on the ink.

Method used

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  • Printing apparatus and maintenance method thereof
  • Printing apparatus and maintenance method thereof
  • Printing apparatus and maintenance method thereof

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Experimental program
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no. 1 approach

[0041] 1-1. Composition

[0042] figure 1 It is a block diagram illustrating a printing system including an inkjet printer 1 (hereinafter simply referred to as a printer) as a printing device and a personal computer (PC) 100 . The printer 1 ejects ink toward a printing medium such as paper, cloth, and film to form an image (print) on the printing medium. PC 100 is communicably connected to printer 1 . In order for the printer 1 to print an image, the PC 100 transmits print data corresponding to the image to the printer 1 .

[0043] The printer 1 has a paper conveyance unit 11 , a carriage unit 12 , a drive signal generation circuit 13 , a head unit 14 , a discharge state detection unit 15 , a cover unit 16 , and a controller 18 . The paper conveying unit 11 has a paper feed roller (not shown) and a paper feed motor (not shown), such as figure 2 The paper is conveyed in the sub-scanning direction (paper conveying direction) as shown. The carriage unit 12 includes a carria...

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Abstract

The invention relates to a printing apparatus and a maintenance method thereof. A maintenance method of nozzles in a case of a clogged state or an unstable ejection state is optimized. An actual measurement value indicating an ejection state of ink ejected from nozzles is measured, the actual measurement value is compared with a first threshold value and a second threshold value which are set for each ink color to determine which is the ejection state of the ink among three states of a normal state, a clogged state, and an unstable ejection state between the normal state and the clogged state, which are distinguished by the first threshold value and the second threshold value, and different maintenance operations are performed in accordance with a determination result.

Description

technical field [0001] The invention relates to a printing device and a maintenance method for the printing device. Background technique [0002] Patent Document 1 describes a method in which a voltage-applied detection member is provided in parallel with the nozzle row, and an induced current flowing through the detection member is detected when ink droplets ejected from the nozzles pass by the detection member, thereby realizing Whether or not ink droplets are ejected from the nozzles and the direction in which ink droplets are ejected are detected. Patent Document 2 describes that when a clogged state is detected, ink is sucked, but the amount of suction operation is changed according to the number of inspections, thereby reducing the ink and time consumed by the suction operation. Patent Document 3 describes that flushing is performed when a clogging state is detected, and a wiping operation is performed when the ink ejection direction is abnormal. Patent Document 4 de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/165
CPCB41J2/16579B41J2/125
Inventor 小松伸也
Owner SEIKO EPSON CORP
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