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Inkjet head and inkjet printer

An inkjet head and ink technology, applied in printing, inking devices, printed circuits, etc., can solve the problems of increasing the mounting area of ​​the driver IC, worsening the ejection characteristics, and hindering the miniaturization of the device.

Active Publication Date: 2021-06-18
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the thinning of the common wiring leads to deterioration of discharge characteristics due to pressure drop
When the common wiring is thickened, the mounting area of ​​the driver IC becomes large, and the miniaturization of the device is hindered

Method used

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  • Inkjet head and inkjet printer
  • Inkjet head and inkjet printer
  • Inkjet head and inkjet printer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach 〕

[0025] (inkjet head 3)

[0026] figure 1 is a diagram showing a schematic configuration of an electrical circuit of the inkjet head 3 of the embodiment, in which figure 1 (a) is a general example, figure 1 (b) is a modified example.

[0027] The inkjet printer 1 includes a plurality of inkjet heads 3 . In addition, the inkjet printer 1 includes an ink supply unit that supplies ink to the inkjet head 3 , a medium conveyance unit that conveys a storage medium to the inkjet head 3 , a print control unit, and the like (none of which are shown).

[0028] Each inkjet head 3 includes a plurality of actuators 7, a drive IC 8, and the like. The driver IC 8 includes a driver circuit including an output transistor 8T.

[0029] One end of the plurality of actuators (elements) 7 is connected to the individual wiring 11 , and the other end is connected to the common wiring 16 .

[0030] The individual wiring 11 is a wiring connected to each actuator 7 individually, and is connected to...

no. 2 approach 〕

[0136] (inkjet head 4)

[0137] Figure 5 is a diagram showing the inkjet head 4 of the second embodiment, in which Figure 5 (a) shows the state before joining, Figure 5 (b) shows the state after joining. For convenience of description, the flexible substrate 40 and the interposer substrate 30 are illustrated with wiring and the like passing through the substrate.

[0138] The same reference numerals and the like are attached to the same components as those of the inkjet head 3 of the first embodiment, and description thereof will be omitted.

[0139] The inkjet head 4 includes a head substrate 10 , a flexible substrate 40 , and a relay substrate 30 . Between the head substrate 10 and the relay substrate 30 , two flexible substrates 40 are arranged in parallel.

[0140] (flexible substrate 40)

[0141] The flexible substrate 40 has substantially the same structure as the flexible substrate 20 .

[0142] The flexible substrate 40L on the left does not have the common c...

no. 3 approach 〕

[0156] (inkjet head 5)

[0157] Figure 7 It is a figure which shows the inkjet head 5 of 3rd Embodiment. For convenience of description, the flexible substrate 40 and the interposer substrate 30 are illustrated with wiring and the like passing through the substrate.

[0158] The same reference numerals and the like are attached to the same components as those in the inkjet heads 3 and 4 of the first and second embodiments, and description thereof will be omitted.

[0159] The inkjet head 5 includes a head substrate 10 , a flexible substrate 40 , and a relay substrate 30 . Between the head substrate 10 and the relay substrate 30 , three flexible substrates 40L, 40C, and 40R are arranged in parallel.

[0160] (flexible substrate 40)

[0161] The flexible substrate 40L on the left does not have the common connection wiring 26R, and the flexible substrate 40R on the right does not have the common connection wiring 26L. The central flexible substrate 40C does not have the com...

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PUM

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Abstract

An inkjet head and an inkjet printer capable of avoiding complication of common wiring on a flexible substrate on which a driver IC is mounted and capable of easily confirming the output of the driver IC. The inkjet head (3) has: an actuator substrate (10), configured with an actuator (7); a flexible substrate (20), configured with a driver IC (8); and a printing substrate (30), laid with a The first reference potential wiring (34) of the potential. The actuator substrate (10) has common wiring (16) laid to the edge portion (10b), and the flexible substrate (20) has: common connection wiring (26), common wiring (16) and first reference potential wiring (34 ) connection; the second reference potential wiring (24), spaced apart from the common connection wiring (26) and connected to the driver IC (8) and the first reference potential wiring (34); and the output monitoring wiring (25), from the driver IC (8) Laying to the edge portion (20b) through between the common connection wiring (26) and the second reference potential wiring (24).

Description

technical field [0001] Embodiments of the present invention relate to an inkjet head and an inkjet printer. Background technique [0002] The inkjet head includes a head substrate, and elements such as a flow path forming member formed with a plurality of ink chambers, a nozzle plate formed with a plurality of nozzles communicating with each ink chamber, and a plurality of actuators corresponding to the ink chambers are arranged on the head. substrate. [0003] The head substrate is connected to the print control unit via a flexible substrate, a relay substrate, a cable, and the like. A driver IC that drives multiple elements is sometimes mounted on a flexible substrate. [0004] Drive power is output from the drive IC and supplied to each element based on an instruction from the print control unit. As a result, the plurality of elements deform, generate heat, etc., the pressure of the ink in the pressure chamber increases, and the ink is ejected from the nozzles. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14B41J2/01
CPCB41J2/14233B41J2/01B41J2002/14258B41J2/14201B41J2002/14459B41J2002/14491B41J2202/11H05K1/189B41J2/04541B41J2/04586B41J2/1433B41J2/14072
Inventor 仁田昇
Owner TOSHIBA TEC KK