CN201140570Y - Thermal sensitive printing head - Google Patents
Thermal sensitive printing head Download PDFInfo
- Publication number
- CN201140570Y CN201140570Y CNU2007201597481U CN200720159748U CN201140570Y CN 201140570 Y CN201140570 Y CN 201140570Y CN U2007201597481 U CNU2007201597481 U CN U2007201597481U CN 200720159748 U CN200720159748 U CN 200720159748U CN 201140570 Y CN201140570 Y CN 201140570Y
- Authority
- CN
- China
- Prior art keywords
- printing head
- heating resistor
- ground glaze
- glaze layer
- electrode cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electronic Switches (AREA)
Abstract
The utility model relates to a heat-sensitive printing head, which belongs to the field of heat-sensitive printers, and aims at solving the defects of the technology that heat-sensitive printing heads are easily to be abraded and the service life is short. The heat-sensitive printing head comprises a base plate which is made of insulation materials, wherein a ground glaze layer is partly or wholly formed on the surface of the base plate made of insulation materials, an electrode line conductor is formed on the ground glaze layer or the surface of the base plate, the electrode line conductor supplies power to a heating resistance body, the heating resistance body and at least a part of a protecting layer of the electrode line conductor which is connected with the heating resistance body are covered. The heat-sensitive printing head is characterized in that a depression groove is arranged on the ground glaze layer, and the heating resistance body is positioned in the depression groove.
Description
Technical field
The utility model thermal printer field at length says it is a kind of thermal printing head.
Background technology
As everyone knows, generally speaking, the ceramic substrate of thermal printing head (thermal print head) uses the glaze slurry, adopts the method (to call thick film in the following text) of printing, sintering to form ground glaze layer on insulated substrate.The heating resistor that on ground glaze layer, adopts thick film to form; thickness between 3～10 μ, like this, after having covered protective layer; protective layer on the heating resistor is compared with the protective layer of other parts, can form the projection about the thickness similar to the heating resistor shape 3～10 μ.In thermal printing head when work, is because the heat that heating resistor is produced conducts to heat-sensitive paper or colour band by protective layer rapidly, so generally require the gross thickness of the protective layer of thermal printing head need be below 10um.
Yet; adopt thick film to form the thermal printing head of said structure; when work; owing to need to keep certain pressure between printer rubber roll and the printhead; protruding protective layer on the above-mentioned heating resistor is easy to be worn; make heating resistor expose, wear and tear, become the low principal element of traveling life-span of thermal printing head.
Summary of the invention
The purpose of this utility model is in order to solve the technical deficiency that existing thermal printing head is easy to wear, service life is short, a kind of new thermal printing head to be provided, to prolong the traveling life-span of thermal printing head.
The technical scheme that the above-mentioned technical deficiency that solves the utility model adopts is: a kind of thermal printing head; comprise the substrate that insulating materials constitutes; insulating materials substrate surface is formed with part or comprehensive ground glaze layer; ground glaze layer or substrate surface are formed with electrode cable; by above-mentioned electrode cable power supplying and heating resistive element; the protective layer of at least a portion of the described electrode cable that covers described heating resistor and link to each other with heating resistor; it is characterized in that; recessed trench is arranged on the ground glaze layer, and heater is positioned at recessed trench.Like this, the surface of heater and the surface of ground glaze layer are positioned on same cambered surface or the plane, and perhaps the heater surface is surperficial obviously not protruding with respect to ground glaze layer.Like this; covered after the described protective layer; protective layer is compared with the protective layer of other parts on the heater; obviously not protruding; and the thickness of protective layer is identical with the thickness of the protective layer of other parts above the heater; when real work,, improved in the traveling life-span of printhead greatly like this because the protective layer projection is resolved by quick wear problems above the heater.
The utility model can realize that also an end of said electrode cable is between heating resistor lower surface and described ground glaze layer upper surface by following measure.One end of said electrode cable also can be positioned at the heating resistor upper surface.
The beneficial effects of the utility model are to have solved the problem that printhead is worn easily heating resistor is exposed, thereby can prolong the service life of printhead.Thermal printing head of the present invention can be used for the industrial thermal printer to having relatively high expectations service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1, structural representation of the present utility model also is the schematic diagram of a kind of embodiment.
1. insulated substrates among the figure, 2. ground glaze layer, 3. electrode cable, 4. heating resistor, 5. protective layer, 6. recessed trench.
The specific embodiment
As shown in Figure 1: on insulated substrate 1, adopt thick film to form ground glaze layer 2, being processed to form the degree of depth on ground glaze layer 2 is 3～10 μ recessed trench 6, modes such as employing printing are packed into recessed trench 6 with an amount of slurry that is used to form heating resistor 4, the surface that makes the surface of heating resistor 4 and ground glaze layer 2 is on same cambered surface, and perhaps heating resistor 4 surfaces are with respect to glaze obvious projection not.Form electrode cable 3 then; electrode cable 3 parts cover on the insulated substrate 1; electrode cable 3 another part then cover on the ground glaze layer 2 and with heating resistor 4 and are electrically connected, heating resistor 4 and with described electrode cable 3 that heating resistor 4 links to each other on cover the protective layer 5 of at least a portion.The protective layer of heating resistor 4 is compared with the protective layer of other parts like this, and is obviously not protruding.
The processing of above-mentioned recessed trench 6 can adopt modes such as grinding, sandblast, chemicals etching to form.
With the thermal printing head that said method is processed to form, on ground glaze layer 2, processed recessed trench 6, be attached with heating resistor 4 in the recessed trench 6.As shown in Figure 1: the thickness A of the ground glaze layer 2 under the heating resistor 4 is not more than thickness B and B ' near the ground glaze layer 2 at heating resistor 4 edges.
Claims (3)
1. thermal printing head; comprise the substrate that insulating materials constitutes; insulating materials substrate surface is formed with part or comprehensive ground glaze layer; ground glaze layer or substrate surface are formed with electrode cable; by above-mentioned electrode cable power supplying and heating resistive element; the protective layer of at least a portion of the described electrode cable that covers described heating resistor and link to each other with heating resistor is characterized in that: the protective layer surface that covers on protective layer surface that covers on the heating resistor and the electrode cable is on same cambered surface or the same plane.
2, according to the described thermal printing head of claim 1, an end that it is characterized in that said electrode cable is between heating resistor lower surface and described ground glaze layer upper surface.
3,, it is characterized in that an end of said electrode cable also can be positioned at the heating resistor upper surface according to the described thermal printing head of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201597481U CN201140570Y (en) | 2007-12-29 | 2007-12-29 | Thermal sensitive printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201597481U CN201140570Y (en) | 2007-12-29 | 2007-12-29 | Thermal sensitive printing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201140570Y true CN201140570Y (en) | 2008-10-29 |
Family
ID=40068284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201597481U Expired - Fee Related CN201140570Y (en) | 2007-12-29 | 2007-12-29 | Thermal sensitive printing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201140570Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000188A1 (en) * | 2009-06-30 | 2011-01-06 | 山东华菱电子有限公司 | Thermal print head |
| CN109421386A (en) * | 2017-08-25 | 2019-03-05 | 罗姆股份有限公司 | The manufacturing method of thermal printing head and thermal printing head |
| CN109484039A (en) * | 2018-12-03 | 2019-03-19 | 山东华菱电子股份有限公司 | A kind of manufacturing method of thermal printing head heating base plate |
-
2007
- 2007-12-29 CN CNU2007201597481U patent/CN201140570Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000188A1 (en) * | 2009-06-30 | 2011-01-06 | 山东华菱电子有限公司 | Thermal print head |
| CN109421386A (en) * | 2017-08-25 | 2019-03-05 | 罗姆股份有限公司 | The manufacturing method of thermal printing head and thermal printing head |
| JP2019038184A (en) * | 2017-08-25 | 2019-03-14 | ローム株式会社 | Thermal print head and manufacturing method of thermal print head |
| CN109421386B (en) * | 2017-08-25 | 2021-04-23 | 罗姆股份有限公司 | Thermal print head and method of manufacturing thermal print head |
| JP6991788B2 (en) | 2017-08-25 | 2022-01-13 | ローム株式会社 | Manufacturing method of thermal print head and thermal print head |
| CN109484039A (en) * | 2018-12-03 | 2019-03-19 | 山东华菱电子股份有限公司 | A kind of manufacturing method of thermal printing head heating base plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |