CN208277640U - A kind of thermal printing head heating base plate of lettering even concentration - Google Patents
A kind of thermal printing head heating base plate of lettering even concentration Download PDFInfo
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- CN208277640U CN208277640U CN201820918274.2U CN201820918274U CN208277640U CN 208277640 U CN208277640 U CN 208277640U CN 201820918274 U CN201820918274 U CN 201820918274U CN 208277640 U CN208277640 U CN 208277640U
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- resistor
- heat generating
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- generating body
- lettering
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Abstract
The utility model proposes a kind of thermal printing head heating base plates of lettering even concentration, the insulating substrate of ground glaze layer is equipped with including surface, ground glaze layer is equipped with resistor layer, resistor layer is equipped with conductor layer, along main Print direction etching conductor layer exposed portion resistor layer to form heating region, pass through photomechanical production technology, conductor layer is formed into individual electrode, concatenate electrode and common electrode, the resistor layer of exposing is formed into several resistor bodies, two neighboring resistor body passes through individual electrode, concatenation electrode and common electrode connect to form heat generating body unit, several heat generating body units are electrically connected by corresponding individual electrode and same control IC, above-mentioned several heat generating body units are denoted as a module, the length-width ratio setting of the resistor body in each heat generating body unit in each module is not exactly the same, it is covered in the whole region of insulating substrate It is stamped protective layer.Above-mentioned heating base plate can compensate lettering concentration deviation caused by common electrode conductor resistance deviation, improve lettering even concentration.
Description
Technical field
The utility model relates to a kind of fevers of the thermal printing head of thermal printing field more particularly to lettering even concentration
Substrate.
Background technique
It is known that the thermal printing head insulating substrate that heating base plate includes that surface is formed with noncrystalline ground glaze layer,
The noncrystalline ground glaze layer is equipped with resistor layer, and conductor layer is equipped on the resistor layer, will by photomechanical production technology
The conductor layer forms individual electrode, concatenation electrode and common electrode, and the resistor layer is formed and is arranged along main Print direction
Several resistor bodies, two adjacent resistor bodies by individual electrode, concatenation electrode and common electrode connect and to form heater list
Member, several heat generating body units are formed by corresponding individual electrode and same control IC and are electrically connected, same control IC is controlled
Several heat generating body units be denoted as a module, in the prior art, the resistance in each heat generating body unit in usual each module
The equal setting of the length-width ratio of body, the length-width ratio also equal setting of the resistor body of the heat generating body unit in disparate modules.
But the lettering voltage of existing thermal printing head is usually only controlled at two since design and structure simplify needs
Gap position between IC processed connect offer with common electrode by bonding lead, since common electrode itself has centainly
Impedance, by each heat generating body unit of common electrode offer lettering voltage in each module, the lettering voltage being actually provided
Different, since the deviation of lettering voltage causes the color development concentration of lettering medium, there are deviations when practical lettering.
Utility model content
In order to solve the problems in the existing technology, the utility model proposes a kind of temperature-sensitives of lettering even concentration to beat
Head heating base plate is printed, to keep the uniformity of lettering concentration preferable.
To achieve the goals above, the utility model proposes a kind of thermal printing head of lettering even concentration fever bases
Plate, including insulating substrate are entirely or partly equipped with noncrystalline ground glaze layer, in the noncrystalline ground coat enamel on the insulating substrate
Layer is equipped with resistor layer, and conductor layer is equipped on the resistor layer, etches conductor layer exposed portion along main Print direction
The conductor layer is formed individual electrode, string by photomechanical production technology with the heating region for forming rectilinear form by resistor layer
The resistor layer of the exposed portion is formed several resistor bodies arranged along main Print direction, phase by receiving electrode and common electrode
Two adjacent resistor bodies connect by individual electrode, concatenation electrode and common electrode and to form heat generating body unit, several heater lists
Member is formed by corresponding individual electrode and same control IC and is electrically connected, by several heat generating body units of same control IC control
It is denoted as a module, the length-width ratio setting of the resistor body in each heat generating body unit in each module is not exactly the same, described
Protective layer is also covered in the whole region of insulating substrate.
Preferably, the width of the resistor body in each heat generating body unit in each module is all the same, each heater list
The length of two resistor bodies in member is identical, and the length of resistor body is successively successively decreased by outside to inside in each heat generating body unit.
Preferably, in each module, the length of the resistor body in outermost heat generating body unit is than most inner side heater list
The length of resistor body in member is big by 0.5% ~ 10%.
Preferably, in each module, the length of the resistor body in outermost heat generating body unit is than most inner side heater list
The length of resistor body in member is big by 2.5%.
Preferably, at the maximum value of the deviation of the length-width ratio of the resistor body in each heat generating body unit in each module
Between 0.5%~10%.
The beneficial effect of the program of the utility model is the thermal printing head fever base of above-mentioned lettering even concentration
Plate passes through the length-width ratio for changing the resistor body in each heat generating body unit, and the common electrode conductor resistance that can compensate for each resistor body is inclined
Lettering concentration deviation caused by difference, can make the uniformity of lettering concentration preferable.
Detailed description of the invention
The structure that Fig. 1 shows the thermal printing head heating base plate of lettering even concentration involved in the utility model is shown
It is intended to.
Fig. 2 shows the plan views of heating region involved in the utility model.
Appended drawing reference: 1- insulating substrate, 2- ground glaze layer, 3- resistor layer, 3a- resistor body, 3b- heat generating body unit, 4- are led
Body layer, 4a- common electrode, 4b- individual electrode, 4c- concatenate electrode, 5- protective layer.
Specific embodiment
Specific embodiment of the present utility model is further described with reference to the accompanying drawing.
As shown in Figure 1, 2, the thermal printing head of lettering even concentration involved in the utility model includes with heating base plate
Insulating substrate 1 is entirely or partly equipped with noncrystalline ground glaze layer 2, in the noncrystalline ground glaze layer 2 on the insulating substrate 1
Be equipped with resistor layer 3, the resistor layer 3 with a thickness of 5~300nm, the resistor layer 3 can be by tantalum silica or tantalum
Silicon carbide is formed, and is equipped with conductor layer 4 on the resistor layer 3, the conductor layer 4 with a thickness of 0.5~1 μm, the conductor
Aluminum conductor layer can be used in layer 4, along main Print direction etching 4 exposed portion resistor layer 3 of conductor layer to form rectilinear form
The conductor layer 4 is formed individual electrode 4b, concatenation electrode 4c and common electrode 4a by photomechanical production technology by heating region,
The resistor layer 3 of the exposed portion is formed to several resistor body 3a arranged along main Print direction, two adjacent resistor bodies
3a connects to form heat generating body unit 3b by individual electrode 4b, concatenation electrode 4c and common electrode 4a, several heat generating body unit 3b
It is formed and is electrically connected by corresponding individual electrode 4b and same control IC, by several heat generating body units of same control IC control
3b is denoted as a module, and the length-width ratio setting of the resistor body 3a in each heat generating body unit 3b in each module is not exactly the same,
The size of resistor body 3a in main Print direction (longitudinal direction of insulating substrate 1) is wherein denoted as to the width of resistor body 3a, it will
The size of resistor body 3a on secondary Print direction (short side direction of insulating substrate 1) is denoted as the length of resistor body 3a.Described exhausted
Protective layer 5 is also covered in the whole region of edge substrate 1, the protective layer 5 is formed using materials such as silicon oxynitrides.
The length of resistor body 3a in each heat generating body unit 3b and the specific set-up mode of width in each module are:
The width of the resistor body 3a in each heat generating body unit 3b in each module is all the same, two electricity in each heat generating body unit 3b
The length of resistance body 3a is identical, and the length of resistor body 3a is successively successively decreased by outside to inside in each heat generating body unit 3b, outermost hair
The length of resistor body 3a in hot body unit 3b is bigger by 0.5% ~ 10% than the length of the resistor body 3a in most inner side heat generating body unit 3b,
It is best with 2.5%.At the maximum value of the deviation of the length-width ratio of the resistor body 3a in each heat generating body unit 3b in each module
Between 0.5%~10%.
It is illustrated so that dot density is 8 points every millimeter of thermal printing head as an example, the width of resistor body 3a is 0.05mm, often
The length of resistor body 3a in a module in outermost heat generating body unit 3b is 0.132mm, by outside to inside, heat generating body unit
The length of resistor body 3a in 3b is sequentially reduced 0.0002mm, as shown in Figure 2, resistor body 3a's in remaining heat generating body unit 3b
Length sets gradually as 0.1318mm, 0.1316mm, until being reduced to the length of the resistor body 3a in most inner side heat generating body unit 3b
No longer reduce after degree 0.128mm.
The thermal printing head of lettering even concentration involved in the utility model is with heating base plate by changing each heater
It is inclined to can compensate for lettering concentration caused by the common electrode conductor resistance deviation of each resistor body for the length-width ratio of resistor body in unit
Difference can make the uniformity of lettering concentration preferable.
Claims (5)
1. a kind of thermal printing head heating base plate of lettering even concentration, it is characterised in that: including insulating substrate, described exhausted
It is entirely or partly equipped with noncrystalline ground glaze layer on edge substrate, resistor layer is equipped on the noncrystalline ground glaze layer, described
Resistor layer is equipped with conductor layer, along main Print direction etching conductor layer exposed portion resistor layer to form rectilinear form
The conductor layer is formed individual electrode, concatenation electrode and common electrode by photomechanical production technology by heating region, will be described
The resistor layer of exposed portion forms several resistor bodies arranged along main Print direction, and two adjacent resistor bodies pass through individual electricity
Pole, concatenation electrode and common electrode connect to form heat generating body unit, and several heat generating body units are by corresponding individual electrode and together
One control IC forms electrical connection, several heat generating body units of same control IC control is denoted as a module, in each module
Each heat generating body unit in resistor body length-width ratio setting it is not exactly the same, also covered in the whole region of the insulating substrate
It is stamped protective layer.
2. the thermal printing head heating base plate of lettering even concentration according to claim 1, it is characterised in that: Mei Gemo
The width of the resistor body in each heat generating body unit in block is all the same, the length phase of two resistor bodies in each heat generating body unit
Together, the length of resistor body is successively successively decreased by outside to inside in each heat generating body unit.
3. the thermal printing head heating base plate of lettering even concentration according to claim 2, it is characterised in that: Mei Gemo
In block, the length of the resistor body in outermost heat generating body unit is bigger than the length of the resistor body in most inner side heat generating body unit by 0.5%
~10%。
4. the thermal printing head heating base plate of lettering even concentration according to claim 3, it is characterised in that: Mei Gemo
In block, the length of the resistor body in outermost heat generating body unit is bigger than the length of the resistor body in most inner side heat generating body unit
2.5%。
5. the thermal printing head heating base plate of lettering even concentration according to claim 3, it is characterised in that: each
The maximum value of the deviation of the length-width ratio of the resistor body in each heat generating body unit in module is between 0.5%~10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918274.2U CN208277640U (en) | 2018-06-14 | 2018-06-14 | A kind of thermal printing head heating base plate of lettering even concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918274.2U CN208277640U (en) | 2018-06-14 | 2018-06-14 | A kind of thermal printing head heating base plate of lettering even concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208277640U true CN208277640U (en) | 2018-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820918274.2U Active CN208277640U (en) | 2018-06-14 | 2018-06-14 | A kind of thermal printing head heating base plate of lettering even concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208277640U (en) |
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2018
- 2018-06-14 CN CN201820918274.2U patent/CN208277640U/en active Active
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