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Ink-jet head circuit

A technology of inkjet head and circuit, which is applied in printing and other directions, can solve the problem of long time consumption, and achieve the effect of reducing time and money

Inactive Publication Date: 2007-04-25
INT UNITED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of debugging program not only takes a long time (about 3 to 5 days), but also costs a lot of money (about tens of thousands of yuan)

Method used

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  • Ink-jet head circuit
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  • Ink-jet head circuit

Examples

Experimental program
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Effect test

Embodiment Construction

[0032] Please refer to FIG. 3 , which is a circuit diagram of an inkjet head circuit used in an inkjet printing device such as a printer according to an embodiment of the present invention. The structure of the inkjet print head chip is, for example, including a substrate, a plurality of transistors, an isolation structure, a dielectric layer, a resistive layer, a first conductor part that provides voltage or current to a heating resistor, The protective layer is used as the second conductor part (not shown in the figure) for transmitting and receiving inkjet printing equipment signal and / or voltage or current. However, the present invention and the embodiments of the present invention are not limited to the above inkjet print head chip structure. In this embodiment, two test pads 300 and 310 are electrically connected to the heating circuit as shown in FIG. 1 , and these two test pads 300 and 310 are part of the inkjet head circuit of the printer. In addition, the inkjet hea...

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PUM

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Abstract

The invention relates to an ink injector circuit of ink injection printer, which is inside the ink injector. Wherein, the invention at least comprises a testing pad connected to the circuit, used to test the signal character but not transmit signal between injector and the printer.

Description

technical field [0001] The present invention relates to an inkjet head circuit, and more particularly to an inkjet head circuit for an inkjet printing device and having a test pad. Background technique [0002] With the evolution of integrated circuit technology, the circuits used in inkjet heads of inkjet printing devices (such as printers) have been integrated in a small space. Such technological progress has undoubtedly reduced the space requirements of the inkjet head, but it has also created other problems. [0003] Fig. 1 shows the heating circuit in the inkjet head of a typical printer, wherein, the printer uses a contact pad (contact pad) or a contact (contact pad or contact, hereinafter collectively referred to as: contact pad) 100 to input a selection signal, and a contact pad 110 to input a ground Potential, and use the contact pad 120 to input the working potential. This is a very simple circuit, but even a simple circuit may have problems. In the circuit show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/135B41J2/04B41J2/07
Inventor 胡瑞华赖伟夫
Owner INT UNITED TECH