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Liquid ejection device and drive timing determination method

A liquid and driving signal technology, applied in the direction of inking device, printing device, printing, etc., can solve the problem of unstable ink ejection and other problems

Active Publication Date: 2021-10-26
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a plurality of actuators are driven at approximately the same timing, ink ejection may become unstable due to crosstalk in which the actions of the actuators interfere with each other.

Method used

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  • Liquid ejection device and drive timing determination method
  • Liquid ejection device and drive timing determination method
  • Liquid ejection device and drive timing determination method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0032] An inkjet printer 10 that prints an image on a recording medium will be described as an example of an image forming apparatus equipped with the liquid ejection device 1 according to the embodiment. figure 1 A schematic configuration of the inkjet printer 10 is shown. The inkjet printer 10 includes, for example, a box-shaped casing 11 as an exterior body. Arranged inside the housing 11 are: a cassette 12 for accommodating a sheet S as an example of a recording medium, an upstream transport path 13 for the sheet S, a conveyor belt 14 for transporting the sheet S taken out from the cassette 12, and an The sheet S on the belt 14 includes inkjet heads 1A to 1D that eject ink droplets, a downstream conveyance path 15 of the sheet S, a discharge tray 16 , and a control substrate 17 . An operation unit 18 serving as a user interface is disposed on the upper side of the casing 11 .

[0033] Image data to be printed on the sheet S is generated, for example, by a computer 2 as a...

no. 2 approach

[0085] Next, a liquid ejection device according to a second embodiment will be described. Figure 18 A perspective view of an inkjet head 100A is shown as an example of the liquid ejection device of the second embodiment. The inkjet head 100A has the same configuration as the inkjet head 1A described in the first embodiment except that the nozzles 51 are arranged in a row. Therefore, with figure 2 The same components are given the same reference numerals, and thus detailed description thereof will be omitted.

[0086] Such as Figure 18 As shown, the inkjet head 100A arranges the nozzles 51 constituting the channels in a row along the X direction. and, if Figure 19 (a) shows an example in which drive timings A to D are regularly assigned to the respective channels. Figure 19 (b) shows the amount of delay in the drive timing of each channel in terms of time. If the inkjet head 100A of the second embodiment also pays attention to the channels to which the driving timing...

no. 3 approach

[0089] Next, a liquid ejection device according to a third embodiment will be described. Figure 20 A vertical cross-sectional view of an inkjet head 101A is shown as an example of a liquid ejection device. The inkjet head 101A omits the pressure chamber (individual pressure chamber) 41 and has the same configuration as the inkjet head 1A described in the first embodiment except that the nozzle plate 5 communicates directly with the common ink chamber 42 . Therefore, due to the Figure 4 The same components are denoted by the same reference numerals, so detailed description thereof will be omitted.

[0090] Figure 20 The shown inkjet head 101A assigns all the channels Figure 16 (a) shows driving timings A to D as an example, and drives are performed. In addition, in the inkjet head 101A, the nozzles 51 may be arranged in a row as in the second embodiment.

[0091] According to any one of the above-mentioned implementation methods, by Figure 16 (a) or FIG. 19(a) shows ...

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Abstract

A liquid ejection device and a driving timing determination method capable of suppressing crosstalk in which actions of actuators interfere with each other to perform stable liquid ejection. A liquid ejection device (1A) according to an embodiment includes a nozzle plate (5) in which nozzles (51) for ejecting liquid are arrayed, an actuator (8), a liquid supply unit (4), and a drive control unit (7). An actuator is provided for each nozzle. The liquid supply part communicates with the nozzle. When focusing on one of the plurality of nozzles, the drive control unit supplies drive signals of driving waveforms in opposite phases to each other to the actuators of at least one group of nozzles adjacent to the focused nozzle.

Description

technical field [0001] Embodiments of the present invention relate to a liquid ejection device and a driving timing determination method. Background technique [0002] There is known a liquid discharge device that supplies a predetermined amount of liquid to a predetermined position. The liquid ejection device is mounted on, for example, an inkjet printer, a 3D printer, a dispensing device, and the like. An inkjet printer ejects ink droplets from an inkjet head to form an image or the like on the surface of a recording medium. The 3D printer ejects the liquid droplets of the modeling material from the modeling material nozzle and solidifies them to form a three-dimensional modeling object. The dispensing device discharges liquid droplets of the sample to supply a predetermined amount to a plurality of containers or the like. [0003] A liquid ejection device having a plurality of nozzles that drive actuators to eject ink drives the plurality of actuators in the same phase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14B41J29/38
CPCB41J2/14B41J29/38B41J2/04581B41J2/04573B41J2/04588B41J2202/15B41J2002/14459B41J2/04541
Inventor 仁田昇
Owner TOSHIBA TEC KK