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Liquid ejecting apparatus and control method thereof

A jetting device and liquid jetting head technology, applied in printing devices, printing, etc., can solve problems such as difficulty in suppressing ink consumption, poor jetting, and reduced image quality of recorded images

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

AI Technical Summary

Problems solved by technology

When the meniscus is in such an unstable state, when switching from the flushing operation to the recording operation, there is a possibility that ejection failure may occur during the recording operation, resulting in a decrease in the image quality of the recorded image, etc.
In addition, there is a problem that it is difficult to suppress the consumption of ink when the ink whose viscosity increases particularly near the meniscus is ejected during flushing, and then the pressure generating element is repeatedly applied with flushing drive pulses and continuously used.

Method used

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  • Liquid ejecting apparatus and control method thereof
  • Liquid ejecting apparatus and control method thereof
  • Liquid ejecting apparatus and control method thereof

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no. 2 Embodiment

[0046] Next, a second embodiment will be described. In the second embodiment, configurations different from those in the first embodiment will be described, and unless differences are mentioned, the printer configuration and its control method are the same.

[0047] Figure 5 It is a flowchart explaining the flow of flushing in the second embodiment.

[0048] In the printer 1 of the present invention, a configuration may be employed in which the resonance pulse FLP1 of the second embodiment is set to be ejected from the nozzle opening 35 when the piezoelectric vibrator 30 is driven, compared with the recording drive pulse. The ejection amount of the ink is large and the flying speed of the ink is fast. If the normal printing mode is switched to the flushing mode, the resonance pulse FLP1 is applied to the piezoelectric vibrating element 30 to perform the first flushing process, and then the recording drive pulse is applied. The piezoelectric vibrator 30 is used to execute th...

no. 3 Embodiment

[0053] Next, a third embodiment will be described. The third embodiment will describe the different configurations from the first embodiment, and the printer configuration and its control method are the same unless there is any difference.

[0054] Figure 6 It is a table showing the driving pulses used in the flushing of the third embodiment.

[0055] In addition, the printer 1 according to the third embodiment may be configured such that the drive signal COM generated by the drive signal generation circuit 58 includes setting the ejection amount and flying speed of the ink ejected from the nozzle opening 35 when the piezoelectric vibrator 30 is driven. The intermediate pulse FLP2 (for example, Th=3Tc / 4, Vd=0.8Vd1) having a value between the driving pulse for recording and the resonance pulse FLP1 is applied to the pressure after the first flushing process and before the second flushing process. The electro vibrator 30 is used to perform the third rinse process. That is, t...

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Abstract

The invention relates to a liquid ejecting apparatus and a control method thereof. A resonance pulse is a voltage waveform substantially containing an expansion element for varying a voltage to expand a pressure chamber, an expansion sustaining element generated following with the expansion element, and sustaining a maximum voltage at a predetermined value, and a contraction element generated following with the expansion sustaining element, and varying the voltage to contract the pressure chamber. A time span from a front end of the expansion element to a front end of the contraction element is set as 1 / 2 of an inherent vibration cycle of ink in the pressure chamber.

Description

technical field [0001] The present invention relates to a liquid ejecting device and a control method for the liquid ejecting device. Background technique [0002] In an inkjet printer as one of the liquid ejecting devices, when the power is turned off, or in a standby state in which no printing is performed while the power is turned on, the nozzle surface of the recording head is sealed (capping) by a cap member. ). Thereby, evaporation of the ink solvent from the nozzle can be suppressed. However, during the printing operation (during the recording operation), since the nozzle surface is released from the capped state, the meniscus in the nozzle is exposed to the atmosphere. Therefore, during the period of opening from the cap member, the viscosity of the ink near the nozzle increases due to the gradual evaporation of the ink solvent from the nozzle with the passage of time. In addition, even if the nozzle forming surface of the recording head is sealed by using a cappi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/045B41J2/165B41J29/393
CPCB41J2/04596B41J2/04551B41J2/04588B41J2/04581B41J2/16526
Inventor 张俊华猿田稔久
Owner SEIKO EPSON CORP
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