CN206826188U - A kind of thermal printing head heating base plate suitable for wet environment - Google Patents
A kind of thermal printing head heating base plate suitable for wet environment Download PDFInfo
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- CN206826188U CN206826188U CN201720661101.2U CN201720661101U CN206826188U CN 206826188 U CN206826188 U CN 206826188U CN 201720661101 U CN201720661101 U CN 201720661101U CN 206826188 U CN206826188 U CN 206826188U
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- protective layer
- glass glaze
- layer
- public electrode
- heating resistor
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Abstract
The utility model proposes a kind of thermal printing head heating base plate suitable for wet environment, the insulated substrate of ground glaze layer is provided with including surface portion, the surface of insulated substrate and ground glaze layer is provided with individual electrode and public electrode, heating resistor configures between electrodes, public electrode one end is connected with heating resistor, and the other end is used to be connected with printing power supply；Individual electrode one end is connected with heating resistor; the other end is connected with pad; the surface of heating resistor, individual electrode and public electrode is provided with protective layer; protective layer is formed by stacking by the different glass glaze protective layer of at least two layers of insulating resistance value; the surface of heating resistor, individual electrode and part public electrode is covered with insulating glass glaze protective layer; at least provided with one layer of electro-conductive glass glaze protective layer on insulating glass glaze protective layer; any one layer of electro-conductive glass glaze protective layer covers public electrode, electro-conductive glass glaze protective layer is connected with printing power supply.Above-mentioned heating base plate can improve the electrocorrosion-resisting performance of thermal printing head.
Description
Technical field
Thermal printing field is the utility model is related to, more particularly to a kind of thermal printing head suitable for wet environment is sent out
Hot substrate.
Background technology
It is well known that thermal printing head of the prior art includes insulated substrate with heating base plate, in the insulated substrate
Surface portion be provided with ground glaze layer, on the surface of the insulated substrate and ground glaze layer be provided with individual electrode and public electrode,
Heating resistor along main Print direction configure between individual electrode and public electrode, as produce Joule heat heater,
One end of the public electrode is connected along secondary Print direction with the heating resistor, and its other end is used for printing power supply phase
Connection；One end of the individual electrode is connected along secondary Print direction with the heating resistor, and its other end is connected with pad
Connect, glass glaze protective layer is provided with the surface of the heating resistor, individual electrode and public electrode.
The manufacturing process of glass glaze protective layer of the prior art is：Thick-film material wear-resisting, that insulation effect is good is chosen to adopt
With printing, the method for sintering（Hereinafter referred to as thick film）Protective layer is formed on heating resistor, for protecting heating resistor, public affairs
Common electrode and individual electrode.
Increased number of stomata often be present in existing glass glaze protective layer, during thermal printing, printed thermal media and heat
Alkali metal, halogen etc. are contained in quick print head surface contact, common printed thermal media, such as its inside such as heat-sensitive paper, colour band
Ion, therefore when gas hole defect be present inside glass glaze protective layer, alkali metal ion, halogen under the printing environment of high humility
Ion-solubility so that moisture, ion and individual electrode form galvanic circle, the voltage between glass glaze protective layer and printing power supply
Poor ＞ 1.23V（Hydrolyze potential difference）When, it may occur that water, halide ion cell reaction, the hydrogen ion of generation, halo acid ion with
Other electrode chemically reacts, and electrode is broken, so as to cause damage of product.
Utility model content
In order to solve problems of the prior art, the utility model proposes a kind of temperature-sensitive suitable for wet environment
Printhead heating base plate, to improve the electrocorrosion-resisting performance of thermal printing head.
To achieve these goals, the utility model proposes a kind of thermal printing head heating suitable for wet environment
Substrate, including insulated substrate, ground glaze layer is provided with the surface portion of the insulated substrate, in the insulated substrate and ground-coat enamel
The surface of layer is provided with individual electrode and public electrode, and heating resistor is configured in individual electrode and common electrical along main Print direction
Between pole, one end of the public electrode is connected along secondary Print direction with the heating resistor, and its other end is used for beating
Print power supply is connected；One end of the individual electrode is connected along secondary Print direction with the heating resistor, its other end with
Pad is connected, and is provided with protective layer on the surface of the heating resistor, individual electrode and public electrode, the protective layer by
The different glass glaze protective layer of at least two layers of insulating resistance value is formed by stacking, in the heating resistor, individual electrode and portion
The surface of public electrode is divided to be led covered with insulating glass glaze protective layer on the insulating glass glaze protective layer at least provided with one layer
Electric glass glaze protective layer, any one layer of electro-conductive glass glaze protective layer covering be not by the public of insulating glass glaze protective layer covering
Electrode, the electro-conductive glass glaze protective layer is set to be connected by the public electrode with printing power supply.
Preferably, the insulation square resistance of the insulating glass glaze protective layer is not less than 100M Ω/.
Preferably, the insulation square resistance of any one layer of electro-conductive glass glaze protective layer is between 0.1-50M Ω/.
The beneficial effect of the program of the present utility model is that the above-mentioned thermal printing head suitable for wet environment generates heat
Substrate can effectively avoid the gas hole defect because of protective layer, and cause moisture, ion etc. to immerse protective layer and cause electrochemistry rotten
Erosion, greatly improve the electrocorrosion-resisting performance of thermal printing head.
Brief description of the drawings
Fig. 1 shows the structural representation of the heating base plate in the utility model first embodiment.
Fig. 2 shows the structural representation of the heating base plate in the utility model second embodiment.
Reference：1- insulated substrates, 2- ground glaze layers, 3a- public electrodes, 3b- individual electrodes, 4- heating resistors, 5a-
Insulating glass glaze protective layer, 5b- top layers electro-conductive glass glaze protective layer, 5c- intermediate layers electro-conductive glass glaze protective layer.
Embodiment
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
The thermal printing head suitable for wet environment involved by the utility model includes insulated substrate 1 with heating base plate,
Ground glaze layer 2 is provided with the surface portion of the insulated substrate 1, is provided with the surface of the insulated substrate 1 and ground glaze layer 2
Other electrode 3b and public electrode 3a, heating resistor 4 along main Print direction configure individual electrode 3b and public electrode 3a it
Between, as the heater for producing Joule heat, one end of the public electrode 3a is along secondary Print direction and the phase of heating resistor 4
Connection, its other end are used to be connected with printing power supply；One end of the individual electrode 3b is along secondary Print direction and the heating
Resistive element 4 is connected, and its other end is connected with pad, in the heating resistor 4, individual electrode 3b and public electrode 3a
Surface be provided with protective layer, the protective layer is formed by stacking by the different glass glaze protective layer of at least two layers of insulating resistance value.
As shown in figure 1, in embodiment 1, the glass glaze protective layer includes two layers, wherein the heating resistor 4,
Individual electrode 3b and part public electrode 3a surface are covered with insulating glass glaze protective layer 5a, the insulating glass glaze protection
Layer 5a insulation square resistance is not less than 100M Ω/, plays heating resistor 4, individual electrode 3b and other layers of glass glaze
Insulating effect between protective layer；Top layer electro-conductive glass glaze protective layer 5b, institute are provided with the insulating glass glaze protective layer 5a
State the public electrode 3a that electro-conductive glass glaze protective layer 5b coverings in top layer are not covered by the insulating glass glaze protective layer 5a so that institute
State top layer electro-conductive glass glaze protective layer 5b by the public electrode 3a with printing power supply to be connected, the top layer electro-conductive glass glaze
Protective layer 5b insulating resistance value is less than insulating glass glaze protective layer 5a, its square resistance that insulate between 0.1-50M Ω/,
Potential difference between the top layer electro-conductive glass glaze protective layer 5b and printing power supply is 0.1-0.2V, so even insulating glass glaze is protected
The defects of stomata be present in sheath 5a, and when moisture, ion, individual electrode shape 3b are into galvanic circle under water vapour environment, due to
Top layer electro-conductive glass glaze protective layer 5b and printing power supply between potential difference less than hydrolysis potential difference 1.23V, therefore will not occur moisture,
The cell reaction of halide ion, thus avoid individual electrode and corrode.
Fig. 2 shows the structural representation of the heating base plate in the utility model second embodiment.In the present embodiment, institute
State protective layer to be formed by stacking by triplex glass glaze protective layer, in the heating resistor 4, individual electrode 3b and part common electrical
Pole 3a surface is not low covered with insulating glass glaze protective layer 5a, the insulation square resistance of the insulating glass glaze protective layer 5a
In 100M Ω/, the insulating effect between heating resistor 4, individual electrode 3b and other layers of glass glaze protective layer is played；Institute
State and be also sequentially provided with intermediate layer electro-conductive glass glaze protective layer 5c and top layer conduction on insulating glass glaze protective layer 5a from the bottom to top
Glass glaze protective layer 5b, and the intermediate layer electro-conductive glass glaze protective layer 5c and top layer electro-conductive glass glaze protective layer 5b insulation
Square resistance is protected between 0.1-50M Ω/ using top layer electro-conductive glass glaze protective layer 5b or intermediate layer electro-conductive glass glaze
The public electrode 3a that layer 5c coverings are not covered by the insulating glass glaze protective layer 5a so that the top layer electro-conductive glass glaze protection
Layer 5b or intermediate layer electro-conductive glass glaze protective layer 5c is connected by the public electrode 3a with printing power supply, such that institute
The potential difference stated top layer electro-conductive glass glaze protective layer 5b and printed between power supply is less than hydrolysis potential difference 1.23V, therefore water will not occur
Divide, the cell reaction of halide ion, thus avoid individual electrode and corrode.
The thermal printing head suitable for wet environment involved by the utility model can be avoided effectively with heating base plate
Because of the gas hole defect of protective layer, and make it that moisture, ion etc. immerse protective layer and cause electrochemical corrosion, greatly improve temperature-sensitive
The electrocorrosion-resisting performance of printhead.
Claims (3)
1. a kind of thermal printing head heating base plate suitable for wet environment, including insulated substrate, in the insulated substrate
Surface portion is provided with ground glaze layer, and individual electrode and public electrode are provided with the surface of the insulated substrate and ground glaze layer, hair
Thermoelectricity resistance body is configured between individual electrode and public electrode along main Print direction, and one end of the public electrode prints along pair
Direction is connected with the heating resistor, and its other end is used to be connected with printing power supply；One end edge of the individual electrode
Secondary Print direction is connected with the heating resistor, and its other end is connected with pad, in the heating resistor, Ge Bie electricity
Pole and the surface of public electrode are provided with protective layer, it is characterised in that：The protective layer is different by least two layers of insulating resistance value
Glass glaze protective layer be formed by stacking, the surface of the heating resistor, individual electrode and part public electrode covered with
Insulating glass glaze protective layer, it is any one at least provided with one layer of electro-conductive glass glaze protective layer on the insulating glass glaze protective layer
The public electrode that the protective layer covering of layer electro-conductive glass glaze is not covered by the insulating glass glaze protective layer, makes the electro-conductive glass glaze
Protective layer is connected by the public electrode with printing power supply.
2. the thermal printing head heating base plate according to claim 1 suitable for wet environment, it is characterised in that：It is described
The insulation square resistance of insulating glass glaze protective layer is not less than 100M Ω/.
3. the thermal printing head heating base plate according to claim 1 or 2 suitable for wet environment, it is characterised in that：
The insulation square resistance of any one layer of electro-conductive glass glaze protective layer is between 0.1-50M Ω/.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661101.2U CN206826188U (en) | 2017-06-08 | 2017-06-08 | A kind of thermal printing head heating base plate suitable for wet environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720661101.2U CN206826188U (en) | 2017-06-08 | 2017-06-08 | A kind of thermal printing head heating base plate suitable for wet environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206826188U true CN206826188U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720661101.2U Active CN206826188U (en) | 2017-06-08 | 2017-06-08 | A kind of thermal printing head heating base plate suitable for wet environment |
Country Status (1)
| Country | Link |
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| CN (1) | CN206826188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693451A (en) * | 2019-01-28 | 2019-04-30 | 山东华菱电子股份有限公司 | A kind of thermal printing head heating base plate and its manufacturing method |
-
2017
- 2017-06-08 CN CN201720661101.2U patent/CN206826188U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693451A (en) * | 2019-01-28 | 2019-04-30 | 山东华菱电子股份有限公司 | A kind of thermal printing head heating base plate and its manufacturing method |
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