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Temperature-sensitive print head

A thermal print head and heating resistor technology, applied in printing, electrical components, image communication, etc., to prevent electrostatic damage and reduce charge accumulation

Inactive Publication Date: 2012-10-24
SHANDONG HUALING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no detailed description on the prevention of electrostatic breakdown of the heating resistor 15, the prevention of electrostatic breakdown of the circuit board 12 arranged on the metal base 10, and the wiring method of the ground wire 42.

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] Implementation form 1:

[0019] refer to figure 1 Embodiment 1 of the present invention will be described. figure 1 It is a cross-sectional view of a thermal print head according to Embodiment 1. On the surface of an insulating substrate 1 such as a ceramic substrate, an amorphous glass paste 2 is partially or completely coated to form a smooth fine pattern, and then Forming the conductor pattern 3 and the heating resistor body layer 4, the conductor pattern 3 can be printed, sintered, photolithography and other graphic plate-making techniques, using gold paste to form the electrode lead-out pattern 3a and the bonding pad pattern 3b on the surface of the insulating substrate 1 Wait. The heating resistor 4 is formed by linearly printing and sintering the resistive paste along the direction of the recording web, and is connected to the conductor pattern 3 for supplying applied power as a heating unit for generating Joule heat.

[0020] Cover the surface of the cond...

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PUM

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Abstract

The invention relates to a temperature-sensitive print head which comprises an external wiring portion. The external wiring portion is provided with power grounding terminals and a signal grounding terminal, a heating resistor layer capable of generating Joule heat is configured on an insulating substrate along a recording width direction, circuit patterns are formed on the surface of the insulating substrate, an insulating protective film layer is covered on the heating resistor layer, a conducting layer is partially or completely covered on a heating resistor covered by the protective film layer, and is connected with an electrostatic grounding terminal arranged on the external wiring portion by a leading-out circuit pattern, and the external wiring portion is provided with the grounding terminals which keep electrically connected with the electrostatic grounding terminal via impedance or by piezoresistors with voltage dependences. The temperature-sensitive print head has the advantages that accumulated charges on the conducting layer are reduced, and can be outwardly released via the circuit patterns configured on the insulating substrate and the external terminals, and static electricity or electrostatic damage to the temperature-sensitive print head due to surge is prevented.

Description

technical field [0001] The invention relates to the technical field of facsimile machines or printers, in particular to a thermal print head used in facsimile machines or printers. Background technique [0002] According to the patent announcement of Japanese patent "Japanese Patent Laid-Open No. 11-70682" figure 1 and paragraph [0019] (refer to Patent Document 1), a thermal print head is designed, the main feature of which is that an auxiliary electrode 9 is formed at the position of the field 2 between the individual electrode 4 and the common electrode 5, the One end of the auxiliary electrode 9 is connected to the conductive layer 8 through a via hole, and the other end is electrically connected to an external power supply applied with a negative potential through a flexible printed circuit board or the like. [0003] In addition, according to the patent notice of Japanese Patent Laid-Open No. 7-171981 figure 1 and paragraph [0016] (refer to Patent Document 2), a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/335H04N1/00
Inventor 赵哲远藤孝文
Owner SHANDONG HUALING ELECTRONICS
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