JPH0272966A - Thick-film type thermal recording head - Google Patents
Thick-film type thermal recording headInfo
- Publication number
- JPH0272966A JPH0272966A JP22464788A JP22464788A JPH0272966A JP H0272966 A JPH0272966 A JP H0272966A JP 22464788 A JP22464788 A JP 22464788A JP 22464788 A JP22464788 A JP 22464788A JP H0272966 A JPH0272966 A JP H0272966A
- Authority
- JP
- Japan
- Prior art keywords
- heat generating
- mass
- resistance values
- generating section
- value
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000020169 heat generation Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract 2
- 230000033228 biological regulation Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 241000287127 Passeridae Species 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B41J2/345—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 characterised by the arrangement of resistors or conductors
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はファクシミリやプリンタなどに応用さｎている
感熱記録ヘッドに係り、特に高ｔｈ質対応厚膜型感熱記
録ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal recording head that is applied to facsimile machines, printers, etc., and particularly relates to a thick film type thermal recording head that is compatible with high quality.
従来の装置は特開昭６０−１６９８０１号公報に記載の
ように、所要抵抗値に達していない発熱抵抗体の抵抗値
をレーザ穿孔により所要抵抗値に納めていた。In the conventional device, as described in Japanese Patent Application Laid-Open No. 60-169801, the resistance value of the heating resistor which has not reached the required resistance value is reduced to the required resistance value by laser drilling.
上記従来技術は１発熱抵抗体の抵抗値を所要の値に納め
るために、レーザ穿孔によってＭｕを行っていた。しか
し、抵抗ｉ［そのものを一定にする従来の方法は、抵抗
値以外に発熱部に関与している抵抗体の質量については
考慮されていなかったため１画質劣化の問題がめった。In the prior art described above, Mu was performed by laser drilling in order to keep the resistance value of one heating resistor within a required value. However, the conventional method of keeping the resistance i constant did not take into account the mass of the resistor involved in the heat generating section in addition to the resistance value, which often led to the problem of deterioration in image quality.
本発明の目的は１発熱抵抗体の質量と抵抗値の関係を考
慮して抵抗値ａｌｌ！に行うことにある。The object of the present invention is to calculate the resistance value all by considering the relationship between the mass and resistance value of the heating resistor. It's about doing things.
上記目的は１発熱抵抗体の発熱部に１個または複数個の
穿孔を形成し、この穿孔によって各々の発熱部の質量と
抵抗値の積が一定になるように抵抗値調整を何うことに
より、達成される。The above purpose is achieved by forming one or more perforations in the heat generating part of a heat generating resistor, and by adjusting the resistance value so that the product of the mass and resistance value of each heat generating part becomes constant using the perforations. , achieved.
発熱抵抗体の発熱部にレーザを照射すると、その部分の
発熱抵抗体が除去され発熱部に所定の径のレーザ穿孔が
形成される。このレーザ穿孔の数によシ、発熱部の質量
と抵抗値が変化し、各発熱部の質量と抵抗値の積の値が
一足の値に調整される。When the heat generating portion of the heat generating resistor is irradiated with a laser, the heat generating resistor in that portion is removed and a laser perforation with a predetermined diameter is formed in the heat generating portion. Depending on the number of laser perforations, the mass and resistance value of the heat generating part change, and the product of the mass and resistance value of each heat generating part is adjusted to a value of one foot.
以下５本発明の実施例を第１図〜第４図により説明する
３、
アルミナなどの絶縁性の基板１の一十面には。Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. 3. Ten surfaces of an insulating substrate 1 made of alumina, etc.
記録信号が印加される第１０ｔｉｚ及び第２の電極３が
亘嶽状に配列されている。これら第１の電極２及び第２
の電極３は、例えば雀などの貴金属を主成分とする導電
性ペーストでスクリーン印刷法によって所望のバター／
配置に印刷され、その後約１２０Ｃで約２０分間乾燥し
、約８５０Ｃ〜９００Ｃ程度で約３０分〜６０分ｍｇし
形成される。不実施例では、第１の電極２と第２の電極
３とは、一定のピッチで互い違いに配列されておシ、第
１の電極２には、選択的に記録信号が印加され。The tenth electrode and the second electrode 3 to which a recording signal is applied are arranged in a straddle shape. These first electrodes 2 and second electrodes
The electrode 3 is made of a conductive paste mainly composed of a noble metal such as a sparrow, and is coated with a desired butter/container by screen printing.
The pattern is printed, then dried at about 120C for about 20 minutes, and then dried at about 850C to 900C for about 30 to 60 minutes. In the non-example, the first electrode 2 and the second electrode 3 are alternately arranged at a constant pitch, and a recording signal is selectively applied to the first electrode 2.
第２の電極３は共通電極となっている。そして、第１の
電極２には、６４本が１組となシ、計８個の駆動用ＩＣ
回路５が接続されており、画像信号発生回路６からの画
像信号が選択的に印加される。The second electrode 3 is a common electrode. The first electrode 2 has 64 drive ICs in one set, a total of 8 drive ICs.
A circuit 5 is connected, and an image signal from an image signal generation circuit 6 is selectively applied.
また、第２の電＆３は、共通部３ａを介して接地されて
いる。これら互い違いに配ｍδれた第１の発熱抵抗体４
が設けられている。この発熱抵抗−は、（１！化ルテニ
ウム（ｋＬｕＯｚ）などの抵抗体ペーストをスクリーン
印刷法などにより幅が約３００μｍで所望の厚みに道布
し、その後約１２０Ｃ〜１５０Ｃで約１０分〜２０分間
乾燥し、約８５０Ｃ〜９００Ｃで約３０分〜６０分間焼
成して形成てれる。これにより２発熱抵抗体４に、互い
違いに配置された多数の第１′ｗＬ他２と第２電極３の
間に発熱ｓ４ａを形成することになる。この発熱抵抗体
４の形成時は、各発熱部４ａの抵抗値が所定値工り小さ
くなるよう考慮される。しかし、その抵抗値は２０％程
度のばらつきが生じる。Further, the second voltage &3 is grounded via the common portion 3a. These first heating resistors 4 arranged mδ alternately
is provided. This heating resistor is made by applying a resistor paste such as 1!ruthenium oxide (kLuOz) to a width of about 300 μm and a desired thickness using a screen printing method, and then heating it at about 120C to 150C for about 10 to 20 minutes. It is dried and fired at about 850C to 900C for about 30 to 60 minutes.This causes the two heating resistors 4 to have a large number of alternatingly arranged first and second electrodes 2 and 3. When forming the heat generating resistor 4, consideration is given to reducing the resistance value of each heat generating part 4a by a predetermined value.However, the resistance value varies by about 20%. occurs.
本実施例においては、この発熱抵抗体４の形成後に発熱
部４ａの抵抗値ばらつきの調整が行われる。In this embodiment, after the heating resistor 4 is formed, the resistance value variation of the heating portion 4a is adjusted.
この発熱抵抗体４の各々の発熱部４ａの抵抗値ｍｕは、
穿孔装置１例えばレーザ穿孔装置によるトリミングによ
り行われる。The resistance value mu of each heat generating part 4a of this heat generating resistor 4 is
Trimming is performed using the drilling device 1, for example, a laser drilling device.
通常、このレーザ穿孔によるトリミングは１発熱部４ａ
の質量を低減、抵抗値ｒ上昇嘔せる方向にある。Normally, this trimming by laser drilling is performed on one heating section 4a.
As the mass decreases, the resistance value r increases.
第３図は、レーザ穿孔による発熱部４ａの質量。FIG. 3 shows the mass of the heat generating part 4a formed by laser drilling.
抵抗値変化の計測例金示す。図でもわかるように。An example of measuring resistance change is shown below. As you can see in the diagram.
抵抗値の増大に伴って１発熱部４ａの質量がレーザ穿孔
によって減少する。As the resistance value increases, the mass of the first heat generating part 4a decreases due to laser drilling.
抵抗値のみを一定の値に調整する従来の方法は。The conventional method is to adjust only the resistance value to a constant value.
第４図に示す工うに、目ｍｍ抗甑に対してｖＩ４整量が
多い場合と少ない場合とでは、レーザ穿孔７の数が極端
に違うため、各々の発熱体４ａの発熱量に差ができ１画
質劣化をまねいていた。As shown in Fig. 4, the number of laser perforations 7 is extremely different depending on whether the vI4 value is large or small with respect to the mm diameter, so there is a difference in the amount of heat generated by each heating element 4a. 1 This caused a deterioration in image quality.
本実施例は１発熱体４ａの発熱量が質量と温夏変化に比
例することに層目し１発熱体の発熱量をＱ、 ＊１ｌｌ
−をｍ、電波変化をΔＴ、抵抗値を几、印加電圧を■と
した時、Ｑ＝ｍＣΔＴ＝Ｖり岨の関係から１発熱量を一
定にするために５発熱体４ａの質量と抵抗値の積を一定
にするように抵抗値ばらつきを調整する。This example focuses on the fact that the calorific value of one heating element 4a is proportional to the mass and temperature change, and the calorific value of one heating element is Q, *1ll.
When - is m, the radio wave change is ΔT, the resistance value is 几, and the applied voltage is Adjust the resistance value variation so that the product of
第１図は、発熱体４ａの抵抗値ばらつきを調整する際の
調整方法の概略傅成全示すものである。FIG. 1 schematically shows the entire method of adjusting the resistance value variation of the heating element 4a.
各々の発熱体４ａの初期抵抗姐金測足し、その後レーザ
穿孔を１個形成し、穿孔形成後の抵抗値の測定、発熱体
４ａの質量の算出を行つｆｃ後、この時の質量と抵抗値
の槓の＆ＴｔＪ１行い、−′Ｃの値が発熱体４ａの質量
（穿孔形成前）と取入抵抗１鉦の積ｍ几□８に等しい場
合は調整を停止し１次の発熱体４ａの調整を始める。等
しくｌい場合は、レーザ穿孔から判定の間を何度がＳ返
して調整を行う。Measure the initial resistance of each heating element 4a, then form one laser hole, measure the resistance after forming the hole, and calculate the mass of the heating element 4a. Perform &TtJ1 for the value, and if the value of -'C is equal to the product m⇠□8 of the mass of the heating element 4a (before hole formation) and the intake resistance 1, stop the adjustment and adjust the value of the primary heating element 4a. Start making adjustments. If they are equal, adjust by repeating the number of times between laser drilling and determination.
本実施例によれば、構成ちれた感熱記録ヘッドによる記
録媒体への記録は１発熱抵抗体４の谷々の発熱部４ａが
質量と抵抗値の関係の調整による抵抗値ばらつきの低減
により、高画質の印画を実現できる。According to this embodiment, recording on a recording medium by a thermal recording head having a configuration is possible by reducing variations in resistance value by adjusting the relationship between mass and resistance value of the heat generating portions 4a in the valleys of one heat generating resistor 4. Achieves high-quality prints.
本発明によれば１発熱抵抗体の発熱部の発熱はらつきを
低減でき、高画質の記録を行うことができる。According to the present invention, fluctuations in heat generation in the heat generating portion of one heat generating resistor can be reduced, and high quality recording can be performed.
第１図は本発明の感熱記録ヘッドの抵抗値ばらつきの調
整方法金示すフロー図、第２図は感熱記録ヘッドの一実
施例の構成を示す断面図、第３図は発熱抵抗体の単位発
熱部におけるレーザ穿孔数と抵抗値調整率、質蓋変化率
との関係を示す特性図、第４図はレーザ穿孔の様子を示
す断面図である。
１・・・絶縁基板、２・・・第１の電極、３・・・第２
の電極３ａ・・・共通部、４・・・発熱抵抗体ｓ４ａ・
・・発熱部。Fig. 1 is a flow diagram showing a method for adjusting resistance value variations in a thermal recording head according to the present invention, Fig. 2 is a sectional view showing the configuration of an embodiment of a thermal recording head, and Fig. 3 is a unit heat generation of a heating resistor. FIG. 4 is a characteristic diagram showing the relationship between the number of laser perforations, the resistance value adjustment rate, and the quality cap change rate in a section, and FIG. 4 is a sectional view showing the state of laser perforation. 1... Insulating substrate, 2... First electrode, 3... Second
Electrode 3a... common part, 4... heating resistor s4a.
・Heating part.
Claims (1)
体、保護層を厚膜プロセスにより順次形成した発熱部を
有する感熱記録ヘッドにおいて、所要抵抗値に達してい
ない発熱抵抗体の抵抗値を発熱抵抗体の質量と抵抗値の
関係から調整し、発熱抵抗体の発熱温度を一定にしたこ
とを特徴とする厚膜型感熱記録ヘッド。1. In a thermal recording head that has a heat generating section in which electrodes are arranged on an alumina substrate, and a heat generating resistor and a protective layer are sequentially formed on the electrode using a thick film process, the resistance of the heat generating resistor does not reach the required resistance value. A thick film type thermal recording head characterized in that the heating temperature of the heating resistor is adjusted to a constant value by adjusting the value based on the relationship between the mass and resistance value of the heating resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22464788A JPH0272966A (en) | 1988-09-09 | 1988-09-09 | Thick-film type thermal recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22464788A JPH0272966A (en) | 1988-09-09 | 1988-09-09 | Thick-film type thermal recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0272966A true JPH0272966A (en) | 1990-03-13 |
Family
ID=16816999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22464788A Pending JPH0272966A (en) | 1988-09-09 | 1988-09-09 | Thick-film type thermal recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0272966A (en) |
-
1988
- 1988-09-09 JP JP22464788A patent/JPH0272966A/en active Pending
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