JPS63252759A - Thermal resistor trimming device for thermal head - Google Patents
Thermal resistor trimming device for thermal headInfo
- Publication number
- JPS63252759A JPS63252759A JP8731987A JP8731987A JPS63252759A JP S63252759 A JPS63252759 A JP S63252759A JP 8731987 A JP8731987 A JP 8731987A JP 8731987 A JP8731987 A JP 8731987A JP S63252759 A JPS63252759 A JP S63252759A
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- heating resistor
- pulse
- trimming
- pulse voltage
- 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
- 238000009966 trimming Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims description 53
- 239000000523 sample Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000704 physical effect Effects 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
- B41J2/35—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 providing current or voltage to the thermal head
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、熱転写式プリンタや、ファクシミリに使用さ
れるサーマルヘッドの発熱抵抗体トリミング装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heating resistor trimming device for a thermal head used in a thermal transfer printer or facsimile.
従来の技術
従来、熱転写式プリンタや、ファクシミリに使用される
サーマルヘッドの構造は第３図（ａ）（ｂ）に示すよう
に、絶縁基板１の上に金、銀、銅等の電気良導体材料を
用いて、成膜技術により構成された共通電極２と、個別
電極３が形成され、その上に抵抗体層４と耐摩耗層５が
構成される。その結果、共通電極２と個別電極３に挟ま
れた複数個の発熱抵抗体６が形成される。BACKGROUND OF THE INVENTION Conventionally, the structure of a thermal head used in a thermal transfer printer or a facsimile machine is as shown in FIGS. A common electrode 2 and individual electrodes 3 are formed using a film forming technique, and a resistor layer 4 and a wear-resistant layer 5 are formed thereon. As a result, a plurality of heating resistors 6 sandwiched between the common electrode 2 and the individual electrodes 3 are formed.
このようなサーマルヘッドの発熱抵抗体は、酸化ルテニ
ウム等の粉末をペースト状にして、Ｘクリーン印刷技術
等を用いて、塗布した後、焼成することにより、形成す
るのが、一般的であり、製造コストや信頼性の点からも
、この、ような方法が主流となりつつある。The heating resistor of such a thermal head is generally formed by making a paste of ruthenium oxide powder, applying it using X-clean printing technology, etc., and then baking it. This method is becoming mainstream in terms of manufacturing cost and reliability.
しかしながら、印刷によって発熱抵抗体を形成すること
は、発熱抵抗体を構成している酸化ルテニウム等の粉末
の不均一性や、印刷機械の精度の限界から、形成された
複数個の発熱抵抗体各々の物性や形状が不均一となり、
これらが、発熱抵抗体の抵抗値にバラツキが生じる原因
となって、ヘッド全体の発熱抵抗体の抵抗値のバラツキ
は、平均抵抗値の±２０％以上あるのが現状である。However, forming a heating resistor by printing is difficult due to the non-uniformity of powder such as ruthenium oxide that makes up the heating resistor and the limits of precision of printing machines. The physical properties and shape of the
These factors cause variations in the resistance value of the heat generating resistor, and currently the variation in the resistance value of the heat generating resistor throughout the head is ±20% or more of the average resistance value.
そこで、印刷によって生じた発熱抵抗体の抵抗値のバラ
ツキを補正する方法（トリミング方法）が種々考えられ
ている。例えばレーザー加工等により、抵抗体の形状を
変化させて抵抗値を補正する方法や、特開昭５１−８３
０５０号公報に記載されているように発熱抵抗体に通常
の使用時より過負荷の電圧パルスを印加して抵抗値を変
化さぜる方法がある。Therefore, various methods (trimming methods) have been considered for correcting variations in the resistance value of the heating resistor caused by printing. For example, there is a method of correcting the resistance value by changing the shape of the resistor using laser processing, etc., and
As described in Japanese Patent No. 050, there is a method of applying an overload voltage pulse to a heating resistor during normal use to change the resistance value.
発明が解決しようとする問題点
しかし、このような従来のトリミング方法では、前者は
発熱抵抗体の形状が変わるために印字性能に悪影響を及
ばずため、サーマルヘッドの発熱抵抗体のトリミング方
法としては好ましくなく、後者の方法は、その点では優
れているが、発熱抵抗体に印加するパルス電圧を最初は
比較的低（設定し、パルス印加後の、抵抗値をチェック
しながら、徐々にパルス電圧を上昇させる方法を採って
いるため、サーマルヘッドのよ・うに数百〜数千もの発
熱抵抗体のトリミングを行う場合には非常に長時間を要
し、そのため、製造コストが上がり、印刷によるコスト
メリットが薄れてしまうという欠点を有していた。Problems to be Solved by the Invention However, with such conventional trimming methods, the former does not have a negative effect on printing performance because the shape of the heating resistor changes, so it is not suitable as a method for trimming the heating resistor of a thermal head. Although the latter method is superior in that respect, the pulse voltage applied to the heating resistor is initially set to a relatively low value, and after the pulse is applied, while checking the resistance value, the pulse voltage is gradually increased. Since trimming of hundreds to thousands of heating resistors such as in a thermal head requires a very long time, this increases manufacturing costs and reduces the cost of printing. This has the disadvantage that the benefits are diminished.
そこで、本発明は印字性能や発熱抵抗体に悪影響を及ぼ
すことなく、しかも、短時間で精度よ（発熱抵抗体の抵
抗値を所定値に補正できるサーマルヘッドの発熱抵抗体
トリミング装置を提供するものである。SUMMARY OF THE INVENTION Therefore, the present invention provides a heating resistor trimming device for a thermal head that can correct the resistance value of the heating resistor to a predetermined value with accuracy in a short time without adversely affecting the printing performance or the heating resistor. It is.
問題点を解決するための手段
本発明は、サーマルヘッドの発熱抵抗体に、パルス幅（
ｔ）、パルス周期（Ｔ）の電圧パルスを所定数印加した
場合の、パルス電圧（Ｖ）と抵抗値変化割合（Ｄｒｉｆ
ｔ）の関係を求め、数式化する第１の手段と、トリミン
グを行う各発熱抵抗体の初期抵抗値（ＲＯ）を測定し、
この測定値に基づき各発熱抵抗体の抵抗値を所定の抵抗
値にトリミングするための必要抵抗値変化割合（トリミ
ング量）を求める第２の手段と、上記発熱抵抗体の抵抗
値変化特性を示す数式を用いて、印加ずへきパルス電圧
を決定し、これに基づいて発熱抵抗体にパルス幅（ｔ）
、パルス周期（’Ｔ）の電圧パルスを印加する第３の手
段とにより、発熱抵抗体の抵抗値を所定値に補正するも
のである作用
本発明は上記した方法により、各発熱抵抗体の抵抗値変
化特性に応じてトリミングのためのパルス電圧を決定す
るため、短時間で精度よ（、しかも、印字性能や発熱抵
抗体の寿命に悪影響を及ぼずことなく、サーマルヘッド
の発熱抵抗体の抵抗値を所定値に補正できるものである
。Means for Solving the Problems The present invention provides a heating resistor of a thermal head with a pulse width (
t), pulse voltage (V) and resistance value change rate (Drif
A first means of determining and formulating the relationship of t), and measuring the initial resistance value (RO) of each heating resistor to be trimmed,
A second means for determining the necessary resistance value change rate (trimming amount) for trimming the resistance value of each heat generating resistor to a predetermined resistance value based on this measured value, and a resistance value change characteristic of the heat generating resistor. Using a mathematical formula, determine the pulse voltage to be applied, and apply the pulse width (t) to the heating resistor based on this.
The present invention corrects the resistance value of each heating resistor to a predetermined value by applying a voltage pulse with a pulse period ('T). Since the pulse voltage for trimming is determined according to the value change characteristics, precision can be achieved in a short time (and the resistance of the heating resistor of the thermal head can be adjusted without adversely affecting printing performance or the life of the heating resistor. The value can be corrected to a predetermined value.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。なお、従来例を示す第３図と共通の素子には共通の番
号を付している
第１図は本発明の一実施例のサーマルヘッドの発熱抵抗
体のトリミング装置の構成図であり、絶縁基板１上に形
成された複数の発熱抵抗体６は、共通電極２と、個別電
極３に接触させたプローブ装置７および切換スイッチ装
置８を介して、抵抗測定器９およびパルス電圧発生装置
１０に接続されている。また、−１−記切換スイッチ装
置８、抵抗測定器９およびパルス電圧発生装置１０はイ
ンターフェース１１に、よって、コンピュータ１２に接
続されており、このコンピュータ１２によって、抵抗値
の測定、パルス条件の設定、パルス電圧の印加、停止等
、サーマルヘッドの発熱抵抗体のトリミングに必要な演
算および制御を全て行うことができる構成になっている
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. Note that FIG. 1, in which elements common to those in FIG. 3 showing a conventional example are given the same numbers, is a configuration diagram of a trimming device for a heating resistor of a thermal head according to an embodiment of the present invention. A plurality of heating resistors 6 formed on the substrate 1 are connected to a resistance measuring device 9 and a pulse voltage generator 10 via a common electrode 2, a probe device 7 and a changeover switch device 8 that are in contact with the individual electrodes 3. It is connected. Further, the changeover switch device 8, the resistance measuring device 9, and the pulse voltage generator 10 described in -1- are connected to the computer 12 through the interface 11, and the computer 12 measures the resistance value and sets the pulse conditions. The configuration is such that all calculations and controls necessary for trimming the heating resistor of the thermal head, such as applying and stopping pulse voltage, can be performed.
−６＝
第２図は同一仕様ではあるが初期抵抗値の異なる複数の
発熱抵抗体に対してパルス幅（ｔ＝３０μ５ｅｃ）、パ
ルス周期（Ｔ＝８ｍｓｅｃ）の電圧パルスを１２０パル
ス印加した場合の、各発熱抵抗体のパルス電圧（Ｖ）と
抵抗値変化割合（Ｄｒｉｆｔ −（Ｒ−Ｒｏ ） ／
Ｒｏ ＊ １００％）の関係を示した一例である。この
図より、発熱抵抗体の抵抗値変化特性は、初期抵抗値（
Ｒｏ）の大小に関わらず、パルス電圧の増大と共に発熱
抵抗体の抵抗値は徐々に低下する傾向を示すことが判る
。-6= Figure 2 shows the case where 120 voltage pulses with a pulse width (t = 30 μ5 ec) and a pulse period (T = 8 msec) are applied to multiple heating resistors with the same specifications but different initial resistance values. , the pulse voltage (V) of each heating resistor and the resistance value change rate (Drift - (R-Ro) /
This is an example showing the relationship of Ro*100%). From this figure, the resistance value change characteristic of the heating resistor is determined by the initial resistance value (
It can be seen that the resistance value of the heating resistor tends to gradually decrease as the pulse voltage increases, regardless of the magnitude of Ro).
また、この時のパルス電圧（Ｖ）と抵抗値変化割合（Ｄ
ｒ ｉ ｆ を−（Ｒ−Ｒｏ）／Ｒｏ＊１００％）の関
係は図中に示した指数関数により、比較的精度よく近似
できることが判る。従って、このような指数関数を用い
て発熱抵抗体の抵抗値変化特性を数式化することにより
、トリミング精度および所要時間を短縮化できるもので
ある。In addition, the pulse voltage (V) and resistance value change rate (D
It can be seen that the relationship of r i f -(R-Ro)/Ro*100%) can be approximated with relatively high accuracy by the exponential function shown in the figure. Therefore, by formulating the resistance value change characteristic of the heat generating resistor using such an exponential function, it is possible to reduce trimming accuracy and time required.
以下、トリミングの手順を説明する。まず、第２図に示
したように、サーマルヘッドの発熱抵抗体６に、パルス
幅（ｔ〉、パルス周期（Ｔ）の電圧パルスを所定数印加
した場合の、パルス電圧（Ｖ）と抵抗値変化割合（Ｄｒ
ｉｆｔ）の関係を求め、数式（指数関数）化したものを
、コンピュータ１２にインプットしておき、次に、プロ
ーブ装置７を発熱抵抗体６の個別電極３および共通電極
２にセットした後、切換スイッチ装置８を操作して抵抗
測定器９により各発熱抵抗体６の初期抵抗値を測定し、
各発熱抵抗体６を所定の抵抗値にトリミングするための
必要抵抗値変化割合（＋−リミング量）をコンピュータ
１２を用いて求め、さらに、先にインプットされている
発熱抵抗体６の抵抗値変化特性を示す数式を用いて、印
加すべきパルス電圧を決定し、これに基づいてパルス電
圧発生装置１０および切換スイッチ装置８を制御し、プ
ローブ装置７を介して発熱抵抗体６に所定の電圧パルス
を印加する。The trimming procedure will be explained below. First, as shown in FIG. 2, the pulse voltage (V) and the resistance value when a predetermined number of voltage pulses with a pulse width (t> and a pulse period (T) are applied to the heat generating resistor 6 of the thermal head) Rate of change (Dr
ift) and input the mathematical formula (exponential function) into the computer 12. Next, after setting the probe device 7 to the individual electrode 3 and the common electrode 2 of the heating resistor 6, the switching Operate the switch device 8 to measure the initial resistance value of each heating resistor 6 using the resistance measuring device 9;
The necessary resistance change rate (+- rimming amount) for trimming each heat generating resistor 6 to a predetermined resistance value is determined using the computer 12, and further, the resistance value change of the heat generating resistor 6 inputted earlier is determined. The pulse voltage to be applied is determined using a mathematical formula representing the characteristics, the pulse voltage generator 10 and the changeover switch device 8 are controlled based on this, and a predetermined voltage pulse is applied to the heating resistor 6 via the probe device 7. Apply.
これにより、電圧パルスを印加された発熱抵抗体６の抵
抗値は所定の抵抗値まで低下し、サーマルヘッドの発熱
抵抗体６のトリミングが完了する。As a result, the resistance value of the heat generating resistor 6 to which the voltage pulse has been applied decreases to a predetermined resistance value, and trimming of the heat generating resistor 6 of the thermal head is completed.
例えば、発熱抵抗体６が第２図に示した抵抗値変化特性
を持ち、トリミングにより抵抗値を１５％（トリミング
量）低下させる必要がある場合には、同図および図中に
示した数式より、発熱抵抗体６に印加すべきパルス電圧
（Ｖ）は約６７．６シｏｆｔとなり、パルス印加後の抵
抗値は、発熱抵抗体６の初期抵抗値（ＲＯ）が異なり、
特性にばらつきがあっても所定の抵抗値の±２％程度に
はトリミングできるものである。For example, if the heating resistor 6 has the resistance value change characteristics shown in Figure 2 and it is necessary to reduce the resistance value by 15% (trimming amount) by trimming, then , the pulse voltage (V) to be applied to the heating resistor 6 is approximately 67.6 shifts, and the resistance value after the pulse application is different from the initial resistance value (RO) of the heating resistor 6.
Even if there are variations in characteristics, trimming can be performed to about ±2% of a predetermined resistance value.
また、これ以上の高精度のトリミングが必要な場合には
、パルス印加を行った後、切換スイッチ装置８を切り換
えて発熱抵抗体６のトリミング後の抵抗値を測定し、所
定の抵抗値まで低下していない発熱抵抗体があれば、そ
の発熱抵抗体に対し再度、僅かに電圧を上げた電圧パル
スを印加すれば、さらに抵抗値が低下し、高い精度で、
所定の抵抗値にトリミングすることができる。If trimming with even higher precision is required, after applying a pulse, changeover switch device 8 is switched to measure the resistance value of heating resistor 6 after trimming, and the resistance value is reduced to a predetermined value. If there is a heating resistor that has not been tested, applying a slightly increased voltage pulse to the heating resistor again will further reduce the resistance value, allowing for high accuracy.
It can be trimmed to a predetermined resistance value.
発明の効果
本発明のサーマルヘッドの発熱抵抗体トリミング装置は
、予め求めておいた発熱抵抗体の抵抗値−〇 −
変化特性に応じてトリミングのためのパルス電圧を決定
するため、従来のように発熱抵抗体に印加するパルス電
圧を最初は比較的低く設定し、パルス印加後の、抵抗値
をチェックしながら、徐々にパルス電圧を上昇させる方
法を採る必要がな（、短時間で精度よく、しかも、印字
性能や発熱抵抗体の寿命に悪影響を及ぼすことなく、低
い製造コストで、サーマルヘッドの発熱抵抗体の抵抗値
を所定値に補正できるなど、実用上、多大な効果を発揮
するものである。Effects of the Invention The heating resistor trimming device for a thermal head of the present invention determines the pulse voltage for trimming according to the resistance value of the heating resistor determined in advance -〇 - change characteristics, so it is not necessary to use the conventional heating resistor trimming device. It is necessary to set the pulse voltage applied to the heating resistor relatively low at first, and then gradually increase the pulse voltage while checking the resistance value after applying the pulse. Moreover, it has great practical effects, such as being able to correct the resistance value of the thermal head's heating resistor to a predetermined value at a low manufacturing cost without adversely affecting printing performance or the life of the heating resistor. be.
第１図は本発明の一実施例のサーマルヘッドの発熱抵抗
体トリミング装置の構成図、第２図は同装置の原理を示
す発熱抵抗体の抵抗値変化特性図、第３図は従来例のサ
ーマルヘッドの構造図である。
■・・・・絶縁基板、２・・・・共通電極、３・・・・
個別電極、４・・・・抵抗体層、６・・・・発熱抵抗体
、７・・・・プローブ装置、８・・・・切換スイッチ装
置、９・・・・抵抗測定器、１０・・・・パルス幅可変
パルス電圧−１，０−
発生器。
代理人の氏名 弁理士 中尾敏男 はか１名６一−−亮
ダ足）１で＼Ａブし４１〈
７−−−ブＤ−ブ式ｉ
第 １ 図 ＆ −一一切欣
スイー７＋装置９−−−魅祝測叉も
１０−一〜パルス鷺丘尭生ゑ壇
第２図
０１Ｒｏ＝８９Ｏｎ
Δ°Ｒｏ＝９８０ｎ
口 ｉ Ｒｏ＝１１０ＱＫＩ
ＰｕＬｓａＶｄｆｑｅ Ｖ （ｖｏｔｉ）１−ｍ＝絶
縁１版
４−一一韮Ｊ光体層
、ｓ−ｗＨ；馬層
６−ｍ−拓字円δ抵１カムう１（
％−Ｘ ＃面恥Fig. 1 is a configuration diagram of a heating resistor trimming device for a thermal head according to an embodiment of the present invention, Fig. 2 is a resistance value change characteristic diagram of a heating resistor showing the principle of the device, and Fig. 3 is a diagram of a conventional example. FIG. 3 is a structural diagram of a thermal head. ■...Insulating substrate, 2...Common electrode, 3...
Individual electrode, 4...resistance layer, 6...heating resistor, 7...probe device, 8...changeover switch device, 9...resistance measuring device, 10... ...Variable pulse width pulse voltage -1,0- generator. Name of agent Patent attorney Toshio Nakao 1 person 61--Ryodaashi) 1\Ab 41〈7--BD-B formula i Fig. 1 &-1 letter 7+ device 9----Miho measurement fork also 10-1 ~ Pulse Sagioka Yasei Edan 2nd figure 01Ro=89On Δ°Ro=980n Mouth i Ro=110QKI PuLsaVdfqe V (voti) 1-m=Insulation 1 version 4-11 Narrow J light body layer, s-wH; Horse layer 6-m-Takuji circle δ resistance 1 cam 1 (%-X #face shame
Claims (2)
、パルス周期（Ｔ）の電圧パルスを所定数印加した場合
の、パルス電圧（Ｖ）と抵抗値変化割合（Ｄｒｉｆｔ）
の関係を求め、数式化する第１の手段と、トリミングを
行う発熱抵抗体群の初期抵抗値（Ｒｏ）を測定し、この
測定値に基づき各発熱抵抗体の抵抗値を所定の抵抗値に
トリミングするための必要抵抗値変化割合（トリミング
量）を求める第２の手段と、前記発熱抵抗体の抵抗値変
化特性を示す前記第１の手段による関係式により、印加
すべきパルス電圧を決定し、これに基づいて各発熱抵抗
体にパルス幅（ｔ）、パルス周期（Ｔ）の電圧パルスを
印加する第３の手段を具備し、前記発熱抵抗体の抵抗値
を所定値に補正することを特徴とするサーマルヘッドの
発熱抵抗体トリミング装置。(1) The pulse width (t) is applied to the heating resistor of the thermal head.
, pulse voltage (V) and resistance value change rate (Drift) when a predetermined number of voltage pulses with a pulse period (T) are applied.
The first means is to find the relationship between the following and express it into a mathematical formula: Measure the initial resistance value (Ro) of the heating resistor group to be trimmed, and adjust the resistance value of each heating resistor to a predetermined resistance value based on this measured value. The pulse voltage to be applied is determined by the second means for determining the necessary resistance value change rate (trimming amount) for trimming, and the relational expression by the first means indicating the resistance value change characteristic of the heating resistor. , and a third means for applying a voltage pulse having a pulse width (t) and a pulse period (T) to each heating resistor based on this, and correcting the resistance value of the heating resistor to a predetermined value. Features: A thermal head heating resistor trimming device.
割合（Ｄｒｉｆｔ＝（Ｒ−Ｒｏ）／Ｒｏ＊１００％）の
関係が指数関数であることを特徴とする特許請求の範囲
第１項記載のサーマルヘッドの発熱抵抗体トリミング装
置。(2) Claim 1 characterized in that the relationship between the pulse voltage (V) and the resistance value change rate (Drift=(R-Ro)/Ro*100%) by the first means is an exponential function. A heating resistor trimming device for a thermal head as described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8731987A JPS63252759A (en) | 1987-04-09 | 1987-04-09 | Thermal resistor trimming device for thermal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8731987A JPS63252759A (en) | 1987-04-09 | 1987-04-09 | Thermal resistor trimming device for thermal head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63252759A true JPS63252759A (en) | 1988-10-19 |
Family
ID=13911525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8731987A Pending JPS63252759A (en) | 1987-04-09 | 1987-04-09 | Thermal resistor trimming device for thermal head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63252759A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04226767A (en) * | 1990-12-29 | 1992-08-17 | Kyocera Corp | Method for trimming resistor of thin film thermal head |
| JPH04269557A (en) * | 1991-02-23 | 1992-09-25 | Rohm Co Ltd | Pulse trimming device of thermal printing head |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61131404A (en) * | 1984-11-29 | 1986-06-19 | ロ−ム株式会社 | Pulse trimming for thermal head |
| JPS6359552A (en) * | 1986-08-29 | 1988-03-15 | Mitsubishi Electric Corp | Manufacture of thermal head |
-
1987
- 1987-04-09 JP JP8731987A patent/JPS63252759A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61131404A (en) * | 1984-11-29 | 1986-06-19 | ロ−ム株式会社 | Pulse trimming for thermal head |
| JPS6359552A (en) * | 1986-08-29 | 1988-03-15 | Mitsubishi Electric Corp | Manufacture of thermal head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04226767A (en) * | 1990-12-29 | 1992-08-17 | Kyocera Corp | Method for trimming resistor of thin film thermal head |
| JPH04269557A (en) * | 1991-02-23 | 1992-09-25 | Rohm Co Ltd | Pulse trimming device of thermal printing head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63252759A (en) | Thermal resistor trimming device for thermal head | |
| JPH10289803A (en) | Resistor and manufacture thereof | |
| JPS63252760A (en) | Thermal resistor trimming of thermal head | |
| JPS63116870A (en) | Method for trimming heat generating resistor of thermal head | |
| JPH0326527B2 (en) | ||
| JPS63178060A (en) | Method for trimming heat generating resistor of thermal head | |
| JPS63141768A (en) | Method for correcting resistance value of thermal head | |
| JPS63178059A (en) | Method for trimming resistor of thermal head | |
| JP2590916B2 (en) | Method of manufacturing thick film type thermal head | |
| JPS6292457A (en) | Forming method for thick film resistance circuit | |
| JPS63252758A (en) | Thermal resistor trimming of thermal head | |
| WO2005075712A2 (en) | Ecmp system | |
| JPH048555A (en) | Resistance value trimming of thermal head | |
| JP2770727B2 (en) | Line insulation resistance measurement method | |
| JPS6359549A (en) | Manufacture of thermal head | |
| JP2570113B2 (en) | Line insulation resistance measurement method | |
| JPS6359552A (en) | Manufacture of thermal head | |
| JPS6359556A (en) | Manufacture of thermal head | |
| JPS6292411A (en) | Manufacture of thick film thermal head | |
| JPH06227016A (en) | Method and apparatus for trimming of thermal head | |
| JPH0192602A (en) | Film thickness measuring method | |
| JPS61171145A (en) | Inspecting method for semiconductor device | |
| JPH0319301A (en) | Film formation for thin film resistor | |
| JPS6292412A (en) | Formation of thick film resistance element | |
| JPH0444245A (en) | Evaluation method of silicon wafer oxide film withstand voltage test |