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Ink Supply System Used For Ink-jet Printer, And Ink Pressure Control Method In System

An inkjet printer and ink supply technology, applied in printing and other directions, can solve problems such as complex device structure, and achieve the effects of easy operation, easy control, and reduced maintenance costs.

Active Publication Date: 2015-08-26
SEIREN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even in this case, it is necessary to investigate the correlation of the pressure value between the pressure controller and the nozzle position in advance, and there is a problem similar to the above.
Furthermore, in this case, since the pressure controller is arranged before and after the head, there is also a problem that the structure of the device becomes complicated.

Method used

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Embodiment Construction

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 It is an explanatory diagram showing the outline of an ink supply system for an inkjet printer according to an embodiment of the present invention. The ink supply system of the present invention is a device that circulates and supplies ink to an inkjet head 1 (hereinafter simply referred to as head 1 ) provided with ink discharge nozzles via an ink circulation path 2 . Such as figure 1 As shown, ink 5 is supplied from a sub-tank (ink tank) 3 to the head 1 through a main pump 4 . As the main pump 4, a metering pump such as a gear pump is used. Among them, the type of the main pump 4 such as a tube pump and a diaphragm pump is not particularly limited.

[0022] In the ink circulation path 2, a damper 6, a filter 7, a heater (temperature adjustment unit) 8, and solenoid valves 9a and 9b are provided. The damper 6 is disposed downstream of the main pump...

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Abstract

The present invention relates to an ink supply system used for an ink-jet printer, and an ink pressure control method in the system. Aiming at an ink gun 1 possessing a nozzle 41 and a pressure chamber 48, the ink is supplied circularly from a sub can 3 via an ink circulation path 2, at the upstream side of the ink gun 1, a pressure sensor 21 is configured, and at the downstream side, a pressure sensor 22 is configured. The flow path resistance R1 between the pressure sensor 21 and the ink gun 1 and the flow path resistance R2 between the pressure sensor 22 and the ink gun 1 are set to be equal R1=R2. A controller 10 calculates the ink pressure at the nozzle 41 according to the detection values of the pressure sensors 21, 22, so that the pressure in the sub can 3 is controlled in a manner of enabling the pressure to be a specified value.

Description

technical field [0001] The present invention relates to an inkjet printer for printing, drawing, coating of raw materials, etc. on a film, a substrate, and other objects to be processed by an inkjet method, and particularly relates to an ink supply system for circulating and supplying liquid ink to an inkjet head of the printer. Background technique [0002] In an inkjet type printer, extremely fine ink droplets are ejected from nozzles provided in an inkjet head on an object to be processed to perform desired printing, image recording, and the like. Such an inkjet printer can perform a recording operation in a state separated from the object to be processed, so it can perform printing, material coating, etc. on objects to be processed of various materials, and can be used in a wide range of applications. In recent years, since higher-definition recording is possible than other recording methods, the inkjet method has been adopted in the manufacture of display devices, circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
Inventor 沢崎浩史荒井肇
Owner SEIREN CO LTD
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