CN202271663U - Thermosensitive printing head - Google Patents
Thermosensitive printing head Download PDFInfo
- Publication number
- CN202271663U CN202271663U CN2011204148565U CN201120414856U CN202271663U CN 202271663 U CN202271663 U CN 202271663U CN 2011204148565 U CN2011204148565 U CN 2011204148565U CN 201120414856 U CN201120414856 U CN 201120414856U CN 202271663 U CN202271663 U CN 202271663U
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- Prior art keywords
- heating resistor
- thermal
- variable coating
- electrode
- printing head
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Abstract
The utility model relates to a thermosenstive printing head, in particular to a thrermosensitive printing head comprising a base plate made of insulating materials. A base layer is arranged on the base plate. The thermosensitive printing head is characterized in that a thermal conductivity variable coating is arranged on the base layer, a wire electrode is formed above the base layer and the thermal conductivity variable coating, the wire electrode is divided into an individual electrode and a common electrode, the individual electrode is connected with a heating resistor body and a control IC in the auxiliary printing direction, the common electrode is connected with the heating resistor body and a wire pattern in the auxiliary printing direction, a heating resistor body belt is formed in the main printing direction on the wire electrode, a protective layer is arranged above the wire pattern and the heating resistor body belt, and the thermal conductivity variable coating can switch between a low thermal conductivity and a high thermal conductivity based on whether current is available or not. The thermosenstive printing head increases the effective utilization of the heat of the heating resistor body, accelerates the heating/cooling temperature of the heating resistor body, reduces energy consumption, increases the heat for upward transfer during heating, improves the printing effect at the initial position, timely carries away residual heat in the heating resistor body during cooling, improves heat dissipation effect, and avoids the hangover phenomenon arising from heat accumulation.
Description
Technical field
The utility model relates to thermal printing head, the thermal printing head that especially a kind of heating resistor power consumption less, warming and cooling rate is fast, heat utilization ratio is high.
Background technology
As everyone knows; Thermal printing head comprises the substrate that is made up of insulating materials; On substrate, do a basic unit (ground glaze layer), form lead electrode in the basic unit, lead electrode is divided into individual electrode and common electrode; The individual electrode that is called that connects heating resistor band and control IC along secondary Print direction; Connect the common electrode that is called of heating resistor and lead pattern along secondary Print direction, the leading India side in the edge that on lead electrode, forms to the heating resistor band, matcoveredn above wire pattern and the heating resistor band.The basic unit of heating resistor below adopts the material of thermal conductivity and temperature correlation, and thermal conductivity and temperature relation in direct ratio, and temperature high heat conductance more is big more.
In the process of heating resistor heating, the temperature of the heating resistor that is in contact with it is only depended in the variation of basic unit's thermal conductivity, when thermal printing head is started working; Add work voltage through seal thermal printing head is heated up, desirable state is the moment that adds at the operating voltage seal, and heating resistor reaches desired temperature at once; And actual situation is, the moment heating resistor band that seal adds work voltage begins heating, and heat is to transmitting all around simultaneously; The basic unit of heating resistor below raises because of absorbing the heat temperature, makes this basic unit's thermal conductivity raise, and then the feasible faster of transmitting heat through this basic unit downwards; This just plays a reaction to the temperature-rise period of thermal printing head; Prolonged the heating-up time, increased the product power consumption, simultaneously owing to can not in time reach temperature required; Make that the original position lettering is unintelligible, reduced the lettering quality.
In the process of thermal printing head cooling, operating voltage stops seal and adds, and heating resistor stops heating; Desirable state is to stop to print the moment that adds in operating voltage, and the heating resistor temperature is reduced to required low-temperature condition rapidly, in this process, lowers the temperature and only realizes through heat conducting mode; So need this moment the basic unit of heating resistor below to have the high heat conductance characteristic, guarantee that residual heat was led away in moment in the heating resistor band, and in fact the height of itself temperature is depended in the variation of basic unit's thermal conductance value of heating resistor below; Stop to print the moment that adds in operating voltage; Because the temperature of heating resistor does not change, so temperature of basic unit does not change yet below it, so the thermal conductivity of this basic unit is also constant; The efficient that heat transmits downwards remains unchanged; This just makes that residual heat can't in time be led away in the heating resistor, causes " hangover " phenomenon in the process of printing, occurring, influences print quality.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of prior art, to provide a kind of heating resistor band below to add the variable coating of one deck thermal conductivity, making the thermal printing head of heating resistor quick heating, cooling news speed.
The utility model can reach through following measure:
A kind of thermal printing head; Comprise the substrate that is made up of insulating materials, substrate is provided with basic unit, it is characterized in that basic unit is provided with the variable coating of thermal conductance; The top of basic unit and the variable coating of thermal conductance forms lead electrode; Lead electrode is divided into individual electrode and common electrode, connects heating resistor and the individual electrode that is called of controlling IC along secondary Print direction, connects the common electrode that is called of heating resistor and lead pattern along secondary Print direction; The leading India side in the edge that on lead electrode, forms to the heating resistor band, wire pattern and heating resistor band top matcoveredn.
The variable coating of the described thermal conductance of the utility model is located in the basic unit under the heating resistor and to both sides extends, and the variable coating of thermal conductance is provided with heating resistor and lead electrode.
The variable coating of the said thermal conductance of utility model can be conducted electricity, and its resistance is at least 6 times of heating resistor resistance, and high heat conductance is at least 5 times of heating resistor bulk thermal conductivities.
The variable coating of thermal conductance in the utility model can be according to the having or do not have of electric current, and thermal conductivity is switched between two states automatically, and when the variable coating of thermal conductance had electric current, its thermal conductivity was low; When the variable coating no current of thermal conductance, its thermal conductivity is high, during work, if lead electrode is provided in a side of on the variable coating of thermal conductance with heating resistor band intersection; Voltage is added between common electrode and the individual electrode by seal, and the heating resistor band begins heating, owing to there is electric current to pass through, this coating automatically switches into the lower thermal conductivity state in the variable coating of thermal conductance of its below of while; This makes the heat that transmits reduce downwards, and the efficient heat that upwards transmits increases, and has improved the effective rate of utilization of heating resistor body heat content; Accelerate the programming rate of heating resistor, reduced power consumption, improved the lettering effect of original position simultaneously; Improved the lettering quality, when operating voltage stops to print the moment that adds, the variable coating no current of thermal conductance; The thermal conductivity automatic switchover high heat conductance shape of the variable coating of thermal conductance this moment, thermal conductivity return to the level before the operating voltage seal adds, and are in the high heat conductance state; Make the heat that transmits increase downwards, heat residual in the heating resistor band is in time taken away, and has improved the radiating effect of thermal printing head; The generation of " hangover " phenomenon of having avoided causing because of thermal accumlation helps to improve the lettering effect, improves the lettering quality.
Description of drawings
Fig. 1 is a kind of structure vertical view of the utility model.
Fig. 2 is a kind of structure section figure of the utility model.
Fig. 3 adds the variable coating product of thermal conductance and does not add the variable coating product temperature lift-down curve of thermal conductance for the utility model.
Mark among the figure: the variable coating of common electrode 1, individual electrode 2, thermal conductance 3, heating resistor band 4, substrate 5, basic unit 6, lead electrode 7, protective layer 8.
The specific embodiment
Below in conjunction with embodiment the utility model is done and to be further described:
A kind of thermal printing head comprises the substrate that is made up of insulating materials, and substrate is provided with the basic unit with enamel; Basic unit is provided with the variable coating of thermal conductance, and the variable coating of thermal conductance generally is located in the basic unit under the heating resistor and to both sides extends, and the variable coating of thermal conductance is provided with heating resistor and lead electrode; The variable coating of thermal conductance can also be provided with in enamel basic unit entirely, is the variable coating waste material of thermal conductance, and the variable coating of said thermal conductance can be conducted electricity; Its resistance is at least 6 times of heating resistor resistance; High heat conductance is at least 5 times of heating resistor bulk thermal conductivities, and the top of basic unit and the variable coating of thermal conductance forms lead electrode, and lead electrode is divided into individual electrode and common electrode; The individual electrode that is called that connects heating resistor and control IC along secondary Print direction; Connect the common electrode that is called of heating resistor and lead pattern along secondary Print direction, the leading India side in the edge that on lead electrode, forms to the heating resistor band, matcoveredn above wire pattern and the heating resistor band.
The variable coating of thermal conductance in the utility model can be according to the having or do not have of electric current, and thermal conductivity is switched between two states automatically, and when the variable coating of thermal conductance had electric current, its thermal conductivity was low; When the variable coating no current of thermal conductance, its thermal conductivity is high, during work, if lead electrode is provided in a side of on the variable coating of thermal conductance with heating resistor band intersection; Voltage is added between common electrode and the individual electrode by seal, and the heating resistor band begins heating, owing to there is electric current to pass through, this coating automatically switches into the lower thermal conductivity state in the variable coating of thermal conductance of its below of while; This makes the heat that transmits reduce downwards, and the efficient heat that upwards transmits increases, and has improved the effective rate of utilization of heating resistor body heat content; Accelerate the programming rate of heating resistor, reduced power consumption, improved the lettering effect of original position simultaneously; Improved the lettering quality, when operating voltage stops to print the moment that adds, the variable coating no current of thermal conductance; The thermal conductivity automatic switchover high heat conductance shape of the variable coating of thermal conductance this moment, thermal conductivity return to the level before the operating voltage seal adds, and are in the high heat conductance state; Make the heat that transmits increase downwards, heat residual in the heating resistor band is in time taken away, and has improved the radiating effect of thermal printing head; The generation of " hangover " phenomenon of having avoided causing because of thermal accumlation helps to improve the lettering effect, improves the lettering quality.
Embodiment, as shown in the figure, a kind of thermal printing head; Comprise the substrate 5 that is made up of insulating materials, on substrate 5, do a basic unit 6 with glaze, go to a grassroots level 6 thickness of heating resistor is more than the 5um; In basic unit 6, do the variable coating 3 of a thermal conductance over against the position of heating resistor band 4, to form a useful boss, the thickness of the variable coating 3 of thermal conductance is below the 20um; Form lead electrode 7 at ready-made substrate surface then, lead electrode is divided into individual electrode 2 and common electrode 1, and individual electrode 2 one ends are connected with heating resistor 4 along secondary Print direction; The other end is connected with control IC, and an end of common electrode 1 is connected with heating resistor 4 along secondary Print direction, and the other end is connected with the lead pattern; On lead electrode 7, form along leading India side to heating resistor band 4, matcoveredn 8 above wire pattern and the heating resistor band.
The variable coating 3 of thermal conductance that the utility model adds has high heat conductance and lower thermal conductivity two states; The high heat conductance value is more than 5 times of lower thermal conductivity value; Between two states, switch according to having or not automatically of electric current in the coating; This coating can be conducted electricity, and the coating resistance is more than 6 times of heating resistor band resistance.
During thermal printing head work, because lead electrode 7 is positioned at the intersection of variable coating 3 of thermal conductance and heating resistor 4, operating voltage is added between common electrode 1 and the individual electrode 2 by seal; Heating resistor 4 begins heating, owing to there is electric current to pass through, this coating thermal conductivity automatically switches to the lower thermal conductivity state in the variable coating 3 of thermal conductance of its below of while; This makes the heat of transmission downwards reduce, and the efficient heat that upwards transmits increases, and has improved the effective rate of utilization of the heat of heating resistor band generation; Accelerated the programming rate of heating resistor; Reduce power consumption, improved the lettering effect of original position simultaneously, improved the lettering quality.
When operating voltage stops to print the moment that adds, the voltage vanishing between common electrode 1 and the individual electrode 2, the electric current in the variable coating 3 of thermal conductance is reduced to zero rapidly; This moment, the coating thermal conductivity automaticallyed switch; Thermal conductivity returns to the high heat conductance state before the operating voltage seal adds, and makes the heat that transmits increase downwards, and heat residual in the heating resistor band 4 is in time taken away; Improved the radiating effect of thermal printing head; The generation of " hangover " phenomenon of having avoided causing because of thermal accumlation helps to improve the lettering effect, improves the lettering quality.
Claims (3)
1. thermal printing head; Comprise the substrate that is made up of insulating materials, substrate is provided with basic unit, it is characterized in that basic unit is provided with the variable coating of thermal conductance; The top of basic unit and the variable coating of thermal conductance forms lead electrode; Lead electrode is divided into individual electrode and common electrode, connects heating resistor and the individual electrode that is called of controlling IC along secondary Print direction, connects the common electrode that is called of heating resistor and lead pattern along secondary Print direction; The leading India side in the edge that on lead electrode, forms to the heating resistor band, wire pattern and heating resistor band top matcoveredn.
2. a kind of thermal printing head according to claim 1 is characterized in that the variable coating of thermal conductance is located in the basic unit under the heating resistor and to the both sides extension, the variable coating of thermal conductance is provided with heating resistor and lead electrode.
3. a kind of thermal printing head according to claim 1; It is characterized in that the variable coating of thermal conductance can conduct electricity; Its resistance is at least 6 times of heating resistor resistance; High heat conductance is at least 5 times of heating resistor bulk thermal conductivities, and the variable coating of thermal conductance can be switched between lower thermal conductivity and high heat conductance two states according to the having or do not have of electric current automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204148565U CN202271663U (en) | 2011-10-27 | 2011-10-27 | Thermosensitive printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204148565U CN202271663U (en) | 2011-10-27 | 2011-10-27 | Thermosensitive printing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202271663U true CN202271663U (en) | 2012-06-13 |
Family
ID=46192048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204148565U Expired - Lifetime CN202271663U (en) | 2011-10-27 | 2011-10-27 | Thermosensitive printing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202271663U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152569A (en) * | 2020-02-19 | 2020-05-15 | 山东华菱电子股份有限公司 | A thermal print head that can improve both printing quality and service life |
| CN111231521A (en) * | 2020-03-24 | 2020-06-05 | 山东华菱电子股份有限公司 | A spliced thermal print head that can improve the printing effect at the splicing |
-
2011
- 2011-10-27 CN CN2011204148565U patent/CN202271663U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152569A (en) * | 2020-02-19 | 2020-05-15 | 山东华菱电子股份有限公司 | A thermal print head that can improve both printing quality and service life |
| CN111231521A (en) * | 2020-03-24 | 2020-06-05 | 山东华菱电子股份有限公司 | A spliced thermal print head that can improve the printing effect at the splicing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 264209 fire road 159, hi tech District, Shandong, Weihai Patentee after: SHANDONG HUALING ELECTRONICS CO., LTD. Address before: 264209 fire road 159, hi tech District, Shandong, Weihai Patentee before: Hualing Electronics Co., Ltd., Shandong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |