CN108016141B - A kind of thermal printing head repairs resistance method - Google Patents
A kind of thermal printing head repairs resistance method Download PDFInfo
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- CN108016141B CN108016141B CN201711282615.8A CN201711282615A CN108016141B CN 108016141 B CN108016141 B CN 108016141B CN 201711282615 A CN201711282615 A CN 201711282615A CN 108016141 B CN108016141 B CN 108016141B
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- heat generating
- resistance value
- generating body
- body unit
- resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/335—Structure of thermal heads
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Abstract
What the present invention proposed a kind of thermal printing head repairs resistance method, comprising the following steps: step S101, tests the resistance value of whole heat generating body units；Step S102, it is based on above-mentioned resistance value, determine each heat generating body unit repairs resistance target resistance value；Step S103, whole heat generating body units are divided into several subregions；Step S104, the first subregion is selected；Step S105, each heat generating body unit repairs resistance data in subregion selected by determining；Step S106, according to resistance data are repaired, each heat generating body unit in selected subregion is applied simultaneously and repairs resistance pulse progress resistance value amendment；Step S107, in subregion selected by test each heat generating body unit resistance value；Step S108, judge whether the resistance value of each heat generating body unit is less than or equal to its corresponding target resistance value；If not, return step S105；If so, entering step S109；Step S109, judge whether current partition is last subregion；If so, repairing resistance terminates；If not, entering step S110；Step S110, next subregion, return step S105 are switched to.The above method, which can effectively improve, repairs resistance efficiency.
Description
Technical field
The present invention relates to thermal printing head technical field, specifically a kind of thermal printing head repairs resistance method.
Background technique
It is well known that being sent out on thermal printing head configured with continuous multiple temperature-sensitives configured according to certain resolution ratio linearity
Hot body unit makes heat generating body unit generate joule thermal effect by applying corresponding pulse voltage to each heat generating body unit,
Print power-up can be converted to thermal energy, and being applied on thermal media by the thermal energy generated using heat generating body unit sends out thermal media
Color.Since there are deviations for the resistance value of heat generating body unit, the calorific value of heat generating body unit when lettering is had differences, causes to print dense
Degree has differences, and in order to eliminate the difference of this one property of density unevenness, usually implements resistance value adjustment to heat generating body unit, makes each
The resistance value of heat generating body unit, which reaches, to be met in the target Standard resistance range of lettering requirement, is typically now by heat generating body unit
Print plus pulse voltage flow through the electric current of certain time to make heat generating body unit internal structure change and reach adjustment heater
The purpose of unit resistance value, this process commonly referred to as repair resistance.
What Fig. 1 showed general thermal printing head repairs resistance flow chart, step S1, tests the resistance value of all heat generating body units；
Step S2, target resistance value is hindered according to fixed the repairing of the resistance value of surveyed heat generating body unit setting；Step S3, to higher than target resistance value
Heat generating body unit applies pulse voltage, carries out resistance value amendment；Step S4, whether the heat generating body unit resistance value that judgement repairs after resistance is less than
Equal to target resistance value；If not, return step S3；If so, entering step S5；Step S5, judging current heat generating body unit is
The last one no for resistance to be repaired；If it is, repairing resistance terminates；If it is not, then entering step S6, being switched to next heater
Unit, later return step S3.
As can seen above it is existing repair resistance process pulse voltage successively applied to each heat generating body unit carry out repairing resistance, repair resistance efficiency
It is low, the time is long, be unfavorable for the raising of working efficiency.
Summary of the invention
The present invention is directed to shortcoming and defect existing in the prior art, proposes that one kind can effectively improve thermal printing head and repair
That hinders the thermal printing head of efficiency repairs resistance method.
To achieve the goals above, repair resistance method the invention proposes a kind of thermal printing head, the method includes with
Lower step:
Step S101, the resistance value of whole heat generating body units of resistance thermal printing head to be repaired is tested；
Step S102, the resistance value based on above-mentioned each heat generating body unit, determine each heat generating body unit repairs resistance target resistance value；
Step S103, whole heat generating body units are divided into several subregions；
Step S104, the heat generating body unit of first subregion is selected；
Step S105, each heat generating body unit repairs resistance data in subregion selected by determining；
Step S106, according to resistance data are repaired, all heat generating body units in selected subregion is applied simultaneously and repair resistance pulse, carried out
Resistance value amendment；
Step S107, in subregion selected by test all heat generating body units resistance value；
Step S108, whether the resistance value that each heat generating body unit after resistance is repaired in judgement is less than or equal to its corresponding target resistance value；
If it is not, then return step S105；If it is, entering step S109；
Step S109, judge currently selected subregion whether be resistance to be repaired the last one subregion；If it is, repairing resistance knot
Beam；If it is not, then entering step S110；
Step S110, next subregion, return step S105 are switched to.
Preferably, the step S102 the following steps are included:
Step 1 carries out preliminary treatment to the resistance value of each heat generating body unit measured, and formula based on preliminary treatment is such as
Under: Ri '=(Ri-Rave)/((Rmax-Rmin)/(RO*m))+RO；Wherein, Rmax indicates the maximum of each heat generating body unit resistance value
Value, Rmin indicate the minimum value of each heat generating body unit resistance value, and Rave indicates the average value of each heat generating body unit resistance value, and R0 is indicated should
The target resistance value of thermal printing head preset heat generating body unit when making, m indicate target resistance value deviation, and Ri indicates measure i-th
The resistance value of a heat generating body unit, Ri' indicate the resistance value of i-th of heat generating body unit after preliminary treatment；
Step 2, to after preliminary treatment resistance value carry out the processing of sliding average method, based on formula it is as follows:Wherein k, i, j are positive integer, and Rk indicates the target resistance value of k-th of heat generating body unit, and j is indicated
It is averaged number a little.
Preferably, in the step S105, the resistance data of repairing of each heat generating body unit obtain by the following method: will be selected
The resistance value of each heat generating body unit is compared with respective target resistance value in subregion, when heat generating body unit resistance value is hindered greater than its target
When value, the resistance data of repairing of the heat generating body unit are denoted as ' 1 ', when heat generating body unit resistance value is less than or equal to its target resistance value, the hair
The resistance value data of hot body unit are denoted as ' 0 '.
The beneficial effect of the program of the present invention is repairing resistance method and capable of effectively improving and repair resistance for above-mentioned thermal printing head
Efficiency, and then effectively improve working efficiency.
Detailed description of the invention
What Fig. 1 showed general thermal printing head repairs resistance flow chart.
Resistance flow chart is repaired Fig. 2 shows thermal printing head according to the present invention.
Fig. 3 shows the resistance value distribution schematic diagram that target resistance value according to the present invention determines a kind of embodiment of method.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
The process for repairing resistance method of thermal printing head according to the present invention is as shown in Fig. 2, the resistance method of repairing includes step
It is rapid as follows:
Step S101, the resistance value of whole heat generating body units of resistance thermal printing head to be repaired is tested.In the present embodiment, as schemed
Shown in 3, resistance thermal printing head to be repaired totally 448 heat generating body units, i.e. 448 heat generating spots, whole heaters that test is obtained
The resistance value data of unit draw to obtain resistance value curve A, wherein maximum value Rmax=816.58 Ω, minimum resistance value Rmin=
731.58 Ω, average resistance value Rave=779.7 Ω.
Step S102, the resistance value based on above-mentioned each heat generating body unit, determine each heat generating body unit repairs resistance target resistance value.
Specific determination process is as follows: preliminary treatment is carried out to the resistance value of each heat generating body unit measured first, it is preliminary to locate
Formula is as follows based on reason:
Ri'=(Ri-Rave)/((Rmax-Rmin)/(R0*m))+R0；
Wherein, Rmax indicates the maximum value of each heat generating body unit resistance value, and Rmin indicates the minimum of each heat generating body unit resistance value
Value, Rave indicate that the average value of each heat generating body unit resistance value, R0 indicate preset heat generating body unit when thermal printing head production
Target resistance value, m indicates target resistance value deviation, and Ri indicates the resistance value of i-th of heat generating body unit measured, and Ri' is indicated through preliminary
The resistance value of treated i-th of heat generating body unit.
In this example, it is assumed that R0=700 Ω, m=± 2%, therefore
Ri'=(Ri-779.7)/((816.58-731.58)/(700*0.04))+700.
Secondly the processing of sliding average method carried out to the resistance value after preliminary treatment, it is specific based on formula it is as follows:Wherein k, i, j are positive integer, and Rk indicates the target resistance value of k-th of heat generating body unit, and j is indicated
It is averaged number a little.
In the present embodiment, j=30 can be made.
The target resistance value data of each heat generating body unit are calculated by step S102, drafting obtains target resistance value curve B.
Step S103, whole heat generating body units are divided into several subregions.In the present embodiment, by whole heat generating body units point
For 7 subregions, wherein every subregion is 64 heat generating body units.
Step S104, the heat generating body unit of first subregion is selected.
Step S105, each heat generating body unit repairs resistance data in subregion selected by determining.
In the present embodiment, the resistance data of repairing of each heat generating body unit obtain by the following method: by selected subregion Nei Gefa
The resistance value of hot body unit is compared with respective target resistance value, when heat generating body unit resistance value is greater than its target resistance value, the hair
The resistance data of repairing of hot body unit are denoted as ' 1 ', when heat generating body unit resistance value is less than or equal to its target resistance value, the heat generating body unit
Resistance value data are denoted as ' 0 ', and so obtain each heat generating body unit in selected subregion repairs resistance data.
Step S106, according to resistance data are repaired, all heat generating body units in selected subregion is applied simultaneously and repair resistance pulse, carried out
Resistance value amendment.In the present embodiment, at the same carry out the modified heat generating body unit number of resistance value be 1~64.
Step S107, in subregion selected by test all heat generating body units resistance value.
Step S108, whether the resistance value that each heat generating body unit after resistance is repaired in judgement is less than or equal to its corresponding target resistance value；
If it is not, then return step S105；If it is, entering step S109.
Step S109, judge currently selected subregion whether be resistance to be repaired the last one subregion；If it is, repairing resistance knot
Beam；If it is not, then entering step S110.
Step S110, next subregion, return step S105 are switched to.
Thermal printing head according to the present invention repair that resistance method can effectively improve thermal printing head at this stage repair resistance
Efficiency.
Claims (2)
1. a kind of thermal printing head repairs resistance method, it is characterised in that: the described method comprises the following steps:
Step S101, the resistance value of whole heat generating body units of resistance thermal printing head to be repaired is tested；
Step S102, the resistance value based on above-mentioned each heat generating body unit, determine each heat generating body unit repairs resistance target resistance value comprising
Following steps:
Step 1 carries out preliminary treatment to the resistance value of each heat generating body unit measured, and formula based on preliminary treatment is as follows: Ri '
=(Ri-Rave)/((Rmax-Rmin)/(R0*m))+R0；
Wherein, Rmax indicates the maximum value of each heat generating body unit resistance value, and Rmin indicates the minimum value of each heat generating body unit resistance value,
Rave indicates that the average value of each heat generating body unit resistance value, R0 indicate the mesh of preset heat generating body unit when thermal printing head production
Resistance value is marked, m indicates target resistance value deviation, and Ri indicates the resistance value of i-th of the heat generating body unit measured, and Ri' is indicated through preliminary treatment
The resistance value of i-th of heat generating body unit afterwards；
Step 2, to after preliminary treatment resistance value carry out the processing of sliding average method, based on formula it is as follows:Wherein k, i, j are positive integer, and Rk indicates the target resistance value of k-th of heat generating body unit, and j is indicated
It is averaged number a little；
Step S103, whole heat generating body units are divided into several subregions；
Step S104, the heat generating body unit of first subregion is selected；
Step S105, each heat generating body unit repairs resistance data in subregion selected by determining；
Step S106, according to resistance data are repaired, all heat generating body units in selected subregion is applied simultaneously and repair resistance pulse, carry out resistance value
Amendment；
Step S107, in subregion selected by test all heat generating body units resistance value；
Step S108, whether the resistance value that each heat generating body unit after resistance is repaired in judgement is less than or equal to its corresponding target resistance value；If
It is no, then return step S105；If it is, entering step S109；
Step S109, judge currently selected subregion whether be resistance to be repaired the last one subregion；If it is, repairing resistance terminates；Such as
Fruit is no, then enters step S110；
Step S110, next subregion, return step S105 are switched to.
2. thermal printing head according to claim 1 repairs resistance method, it is characterised in that: each to send out in the step S105
The resistance data of repairing of hot body unit obtain by the following method: by the resistance value of each heat generating body unit in selected subregion with respective target
Resistance value is compared, and when heat generating body unit resistance value is greater than its target resistance value, the resistance data of repairing of the heat generating body unit are denoted as ' 1 ',
When heat generating body unit resistance value is less than or equal to its target resistance value, the resistance value data of the heat generating body unit are denoted as ' 0 '.
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| CN108016141B true CN108016141B (en) | 2019-08-20 |
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| JP2019202452A (en) * | 2018-05-22 | 2019-11-28 | 東芝テック株式会社 | Image forming apparatus |
| CN108944064B (en) * | 2018-06-07 | 2021-02-23 | 广州四为科技有限公司 | Adjusting and measuring device and method for adjusting and measuring resistance value of thermal head |
| CN110789236B (en) * | 2019-11-06 | 2020-09-25 | 上海商米科技集团股份有限公司 | Method for detecting bad point of printing head of thermal printer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654219A (en) * | 2004-02-12 | 2005-08-17 | 阿尔卑斯电气株式会社 | Thermal head |
| CN201471856U (en) * | 2009-09-01 | 2010-05-19 | 山东华菱电子有限公司 | Thermal printer head |
| CN103381711A (en) * | 2012-05-04 | 2013-11-06 | 山东华菱电子有限公司 | Method and device for thermal printing head resistor repair |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60194654A (en) * | 1984-03-15 | 1985-10-03 | Seiko Epson Corp | Printing head for copy |
| JPS6339358A (en) * | 1986-08-04 | 1988-02-19 | Mitsubishi Electric Corp | Formation of thick film resistor |
| JP2635767B2 (en) * | 1989-06-02 | 1997-07-30 | シャープ株式会社 | Thermal head device and video printer |
| JPH09118031A (en) * | 1995-10-25 | 1997-05-06 | Toshiba Corp | Thermal print head |
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2017
- 2017-12-07 CN CN201711282615.8A patent/CN108016141B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654219A (en) * | 2004-02-12 | 2005-08-17 | 阿尔卑斯电气株式会社 | Thermal head |
| CN201471856U (en) * | 2009-09-01 | 2010-05-19 | 山东华菱电子有限公司 | Thermal printer head |
| CN103381711A (en) * | 2012-05-04 | 2013-11-06 | 山东华菱电子有限公司 | Method and device for thermal printing head resistor repair |
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