Amorphous diamond wear proof protective layer of heat-sensitive printing head and its preparing method

A thermal print head, amorphous diamond technology, applied in printing and other directions, can solve the problems of poor bonding, poor wear resistance, and high stress on the wear-resistant protective layer

Inactive Publication Date: 2005-12-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor wear resistance and short service life of the existing wear-resistant protective layer of the thermal print head due to the low hardness of the film quality, and the existing preparation method of the wear-resistant protective layer makes the wear-resistant protective layer stress high and poor bonding, thereby providing an amorphous diamond wear-resistant protective layer for a thermal print head and a preparation method thereof

Method used

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  • Amorphous diamond wear proof protective layer of heat-sensitive printing head and its preparing method

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specific Embodiment approach 1

[0005] Specific embodiment one: the amorphous diamond wear-resistant protective layer of the thermal print head in this specific embodiment utilizes the filtered cathode vacuum arc system to deposit an amorphous diamond film on the surface of the thermal print head, and the amorphous diamond film The thickness is 0.3 ~ 2μm. The filtered cathode vacuum arc system is used to deposit amorphous diamond film, which has large deposition area, fast deposition speed, high film quality, low deposition temperature and pure surface.

specific Embodiment approach 2

[0006] Specific embodiment two: adopt the step of the preparation method of the amorphous diamond wear-resistant protection layer of the thermal print head of filtering cathodic vacuum arc system to comprise: 1, cleaning: will need to prepare the thermal print head of wear-resistant protective layer with acetone Clean in an ultrasonic cleaning machine, take it out and dry it with a hair dryer; 2. Marking: Use a marker pen to mark and cover the connection between the thermal print head and the drive circuit, and then install it on the substrate chuck of the filtered cathode vacuum arc system Put the deposition surface of the wear-resistant protective layer of the thermal print head to the etching work area of ​​the vacuum chamber, and vacuumize; 3. Etching: the background vacuum degree is 1.5 to 2.5×10 -6 During Torr, inject argon with a purity of 99.99% to raise the vacuum to 1.0-4.0×10 -4 Torr, using a Kaufman ion gun to etch the deposition surface of the wear-resistant prote...

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the cleaning time in the ultrasonic cleaning machine in step 1 is 15 minutes. Other steps are the same as in the second embodiment.

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Abstract

The present invention relates to the amorphous diamond wearing coat of the heat-sensitive printing head and the preparation method. The present invention use the filtering negative electrode air-void electric arc to deposit amorphous diamond film on the heat-variable printing head, and the thickness of the film is between 0.3 and 2 micron m. The present invention contains some approaches as following. Firstly, clean. Secondly, chalk line. Thirdly, etch. Fourthly, deposit. The last is final treatment. The amorphous diamond wearing coat of the present invention has the excellences such as the slippery surface, low friction factor and the conductivity factor is finer. The preparation method adopts energy downing gradient method, which makes the stress of the wearing coat low and the associability strong, so it extends the operational life span of the heat- sensitive printing head.

Description

Technical field: [0001] The invention relates to a wear-resistant protective layer of a thermal printing head used in a thermal printer and a preparation method thereof. Background technique: [0002] With the development of the information industry, thermal printers that work in a non-collision mode are widely used in portable terminal printing, electronic cash registers ( POS) printing, medical ticket printing, fax machine output, plate making printing, sticker printing, bill printing and other fields. Among them, the thermal print head (TPH) is the core component of the thermal printer. Its working principle is to apply the information collected by the host to the heating resistor in the form of pulses after being driven by the circuit, and the heating resistor generates Joule heat to conduct The method is directly transferred to thermal printing paper that is sensitive to thermal discoloration (or transferred to ordinary paper through thermal transfer ribbon), so as to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/335
Inventor 朱嘉琦韩杰才孟松鹤檀满林赫晓东
Owner HARBIN INST OF TECH
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