JPS63251273A - Thermal recorder - Google Patents

Thermal recorder

Info

Publication number
JPS63251273A
JPS63251273A JP62084717A JP8471787A JPS63251273A JP S63251273 A JPS63251273 A JP S63251273A JP 62084717 A JP62084717 A JP 62084717A JP 8471787 A JP8471787 A JP 8471787A JP S63251273 A JPS63251273 A JP S63251273A
Authority
JP
Japan
Prior art keywords
recording paper
conductor
switch
earth
thermal
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
Application number
JP62084717A
Other languages
Japanese (ja)
Inventor
Hidekazu Hara
英一 原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62084717A priority Critical patent/JPS63251273A/en
Publication of JPS63251273A publication Critical patent/JPS63251273A/en
Pending legal-status Critical Current

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  • Accessory Devices And Overall Control Thereof (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent the disconnection of a conductor, by a method wherein, a switch is provided between a platen roller and earth and, thereby, a corrosion current which would pass from the conductor to earth through a protective layer is cut off. CONSTITUTION:When a thermal recording paper 9 is being recorded, a static electricity of 1-2 KV is generated both between the recording paper 9 and a thermal head 1 and between the recording paper 9 and a platen roller 12. By turning on a switch 14, this static electricity passes to earth 15 through a conductive rubber 11, a roller shaft 10, an earth wire 13, and the switch 14, thus having no possibility of breaking a driver IC 8. On the other hand, when the thermal recording paper 9 is stopped during facsimile transmission and an electric potential is being applied to a conductor 4, a corrosion current which will pass from the conductor 4 to earth 15 through the defective parts in an oxidation-resistant layer 5 and a wear-resistant layer 6 and further through the thermal recording paper 9, the conductive rubber 11, the roller shaft 10, and the earth wire 13 can be interrupted by turning off the switch 14.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ファクシミリなどに用いる感熱記録装置に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal recording device used in facsimiles and the like.

〔従来の技術〕[Conventional technology]

従来の感熱装置では、一般にサーマルヘッドにより、感
熱記録紙をプラテンローラに押し付けて該記録紙を搬送
していたため、サーマルヘッドの保護層と感熱記録紙と
の摩擦により静電気が発生し、サーマルヘッドに搭載さ
れたIC,発熱抵抗体及び導体を破壊する場合がある。
In conventional thermal devices, the thermal head generally presses the thermal recording paper against the platen roller and conveys the recording paper, so static electricity is generated due to friction between the thermal head's protective layer and the thermal recording paper, causing damage to the thermal head. It may destroy the mounted IC, heating resistor, and conductor.

この対策とし℃プラテンローラのゴムを導電性(105
Ω以下)にスルト共に、該プラテンローラをアースに接
続する方法が採用されている。
As a countermeasure to this problem, the rubber of the platen roller is made conductive (105°C).
Ω or less), a method is adopted in which the platen roller is connected to ground.

ところが、特開昭60−195665号公報に記載のよ
うに感熱記録紙には水分が含まれ℃おり、又、サーマル
ヘッドの保護層にはピンホールがあるので、該ピンホー
ルから前記水分が侵入すると、サーマルヘッドの発熱抵
抗体及び導体を腐食させるばかりでなく、ときには断線
障害を発生させる。
However, as described in Japanese Patent Application Laid-Open No. 195665/1983, thermal recording paper contains moisture at 10°C, and since there are pinholes in the protective layer of the thermal head, the moisture may enter through the pinholes. This not only corrodes the heating resistor and conductor of the thermal head, but also sometimes causes disconnection.

この断線障害は、前記プラテンローラに導電性ゴムを用
いた場合、サーマルヘッドの導体(24Vの高電位)→
保賎層ビ/ホール→感熱記録紙→プラテンローラ→アー
スの電流経路が形成されるから絶縁性(10100以上
)ゴムを用いたプラテンローラと比較すると顕著である
。このため、前記公報に記載され℃いるように、保護層
上に耐電食層を設けて水分を通さないようにすることに
より、断線障害を防ぐ構造のサーマルヘッドが提案され
ている。
This disconnection failure occurs when the conductor of the thermal head (high potential of 24V) →
This is remarkable compared to a platen roller using insulating (10100 or higher) rubber because a current path is formed from the insulation layer vias/holes to the thermal recording paper to the platen roller to the ground. For this reason, as described in the above-mentioned publication, a thermal head has been proposed in which an electrolytic corrosion-resistant layer is provided on the protective layer to prevent moisture from passing through, thereby preventing wire breakage.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来例では、サーマルヘッドの発熱抵抗体及び導体
を耐酸化層、耐摩耗層及び耐電食層の三層構成で保護す
る必要があるため、従来の二重構成のものと比較すると
工程が増加するから、サーマルヘッドはコスト高となっ
て好ましくない問題があった・ 本発明は、導体から保護層を経てアースに流れようとす
る腐食電流を遮断し、導体の断嶽を防ぐことができる感
熱記録装置を提供することを目的とする。
In the conventional example above, it is necessary to protect the heating resistor and conductor of the thermal head with a three-layer structure of an oxidation-resistant layer, a wear-resistant layer, and an electrolytic corrosion-resistant layer, so the number of steps is increased compared to the conventional double-layered structure. Therefore, the thermal head has an undesirable problem of high cost.The present invention is a thermal head that can prevent the conductor from breaking by blocking the corrosive current that attempts to flow from the conductor through the protective layer to the ground. The purpose is to provide a recording device.

〔問題を解決するための手段〕[Means to solve the problem]

上記問題点は、感熱記録装置を構成するプラグ/ローラ
とアースとの間にスイッチを設け、該スイッチにより導
体から保護層を経てアースに流れようとする腐食電流を
遮断することにより解決される。
The above problem can be solved by providing a switch between the plug/roller constituting the thermosensitive recording device and the ground, and using the switch to interrupt the corrosive current flowing from the conductor through the protective layer to the ground.

〔作用〕 感熱記録紙が記録され℃いる場合、すなわちサーマルヘ
ッドの保護層と感熱記録紙が摩擦して静電気を発生して
いる場合には、プラテンローラとアースとの間に設けた
スイッチを介し℃オン状態にして前記静電気をアースに
逃がす。感熱記録紙が記録され℃いない場合には、前記
スイッチを介してオフ状態にして腐食電流を遮断する。
[Function] When the thermal recording paper is being recorded at a temperature of ℃ is turned on to release the static electricity to the ground. When the heat-sensitive recording paper is not recorded at a temperature of 0.degree. C., the switch is turned off to cut off the corrosion current.

上記のようにオン状態及びオフ状態にすることにより、
感熱記録紙が記録され℃いなく、導体に電位(一般に2
4r)が印加されている状態、例えばファクシミリの送
信時の腐食電流を完全に防止することができる。
By turning it on and off as described above,
Thermal recording paper is not recorded in °C and the conductor has a potential (generally 2°C).
4r) is applied, for example, corrosive current during facsimile transmission can be completely prevented.

〔実施例〕〔Example〕

以下、本発明の一実施例を図面について説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第1図におい℃、サーマルヘッド1は押しはね8により
押圧され、感熱記録紙9をプラテンローラ12に押付け
る。該プラテンローラ12は、ローラ軸10と核ローラ
軸10にはめ込まれた導電性ゴム11とからなり、ロー
ラ軸10にはアース?fM13が接続されている。該ア
ース縁13に対向し℃アース15に接続するスイッチ1
4が設置されている。
1, the thermal head 1 is pressed by a pusher spring 8 and presses the thermal recording paper 9 against the platen roller 12. As shown in FIG. The platen roller 12 consists of a roller shaft 10 and a conductive rubber 11 fitted into the core roller shaft 10, and the roller shaft 10 is connected to the ground. fM13 is connected. A switch 1 facing the ground edge 13 and connected to the °C ground 15
4 are installed.

上記サーマルヘッド1は第2図に示すように、グレーズ
ドセラミック基板2と、該基板2上に搭載された発熱抵
抗体3及びドライバIC8と、該発熱抵抗体3上に順次
に積層された導体4.耐酸化膚5.耐摩耗層6及び絶縁
層7とにより構成されている。前記発熱抵抗体3が、ド
ライバIC8により制御され、該制御信号に従って発熱
抵抗体5に電流が流れると、ジュール熱が発生して感熱
記録紙9を発色記録させる。
As shown in FIG. 2, the thermal head 1 includes a glazed ceramic substrate 2, a heating resistor 3 and a driver IC 8 mounted on the substrate 2, and a conductor 4 laminated in sequence on the heating resistor 3. .. Oxidation resistant skin 5. It is composed of a wear-resistant layer 6 and an insulating layer 7. The heat generating resistor 3 is controlled by the driver IC 8, and when a current flows through the heat generating resistor 5 according to the control signal, Joule heat is generated and color recording is performed on the thermal recording paper 9.

前記導体4は上記電流の通路であり、又、耐酸化層5は
発熱抵抗体3の酸化を防止し、又、耐摩耗層6は感熱記
録紙9の摩擦による摩耗を防ぐ役割をし、さらに絶縁層
7は導体4の保護を行う。
The conductor 4 is a path for the current, the oxidation-resistant layer 5 prevents the heating resistor 3 from being oxidized, the abrasion-resistant layer 6 serves to prevent the heat-sensitive recording paper 9 from being worn out by friction, and The insulating layer 7 protects the conductor 4.

次に上記のような構成からなる本実施例の作用について
説明する。
Next, the operation of this embodiment configured as described above will be explained.

押しばね8によりサーマルヘッド1を介してプラテンロ
ーラ12に押付けられた感熱記録紙9が、該プラテンロ
ー212の回転に伴って搬送される際感熱記録紙9とサ
ーマルヘッド1との間及び感熱記録紙9とプラテンロー
212との間に1〜2KVの静電気が発生する。該静電
気はスイッチ14をオン状態とすることにより、導電性
ゴム11、ローラ軸10、アース縁13及びスイッチ1
4を経てアース15に流れるため、ドライバIC8を破
壊するなどの悪影響を及はさなくなる。
When the thermal recording paper 9 pressed against the platen roller 12 via the thermal head 1 by the pressure spring 8 is conveyed as the platen roller 212 rotates, the thermal recording paper 9 is moved between the thermal recording paper 9 and the thermal head 1 and between the thermal recording paper 9 and the thermal head 1. 9 and the platen row 212, static electricity of 1 to 2 KV is generated. By turning on the switch 14, the static electricity is removed from the conductive rubber 11, the roller shaft 10, the ground edge 13, and the switch 1.
4 to the ground 15, it will not have any adverse effects such as destroying the driver IC 8.

一方、ファクシミ’ Uの送信時に感熱記録紙9が停止
し、導体4に電位が印加されている場合にはスイッチ1
4をオフ状態とすることにより、導体4から耐酸化層5
及び耐摩耗層6の欠陥部を通り、感熱記録紙9、導電性
ゴム11、ローラ軸10及びアースI#A13を経てア
ース15に流れようとする腐食電流を遮断することがで
きる。
On the other hand, if the thermal recording paper 9 is stopped and a potential is applied to the conductor 4 when transmitting the facsimile 'U, the switch 1 is
4 is turned off, the oxidation-resistant layer 5 is removed from the conductor 4.
Corrosion current that attempts to flow through the defective portion of the wear-resistant layer 6 to the earth 15 via the heat-sensitive recording paper 9, the conductive rubber 11, the roller shaft 10, and the earth I#A 13 can be blocked.

上記の場合、スイッチ14は、静電気に耐えるだけの耐
圧を有すればよいので、非常に小形で、かつ安価なもの
でよい。
In the above case, the switch 14 only needs to have a withstand voltage sufficient to withstand static electricity, so it can be very small and inexpensive.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明によれば、導体から保護層
の欠陥部を経℃アースに流れようとする腐食電流を、き
わめて簡単で、かつ安価な手段を介して遮断することに
より、導体の腐食断線を防止することができる。
As explained above, according to the present invention, the corrosion current that attempts to flow from the conductor through the defective part of the protective layer to the temperature ground is cut off using an extremely simple and inexpensive means. Corrosion and disconnection can be prevented.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の感熱記録装置の一実施例を示す構成図
、第2図は第1図のサーマルヘッドの断面図である。 1・・・・・・・・・・・・サーマルヘッド9・・・・
・・・・・・・・感熱記録紙12・・・・・・・・・プ
ラテンローラ14 ・・・・・−・・スイッチ 15 ・・・・・−・・アース 代理人 弁理士 小 川 勝 男:、−O第 1 口 第2図 λ 8ドライIX−工ご
FIG. 1 is a block diagram showing an embodiment of the thermal recording apparatus of the present invention, and FIG. 2 is a sectional view of the thermal head shown in FIG. 1. 1...Thermal head 9...
......Thermal recording paper 12...Platen roller 14 ......Switch 15 ...... Earth agent Patent attorney Masaru Ogawa Man:, -O 1st mouth 2nd figure λ 8 dry IX-work

Claims (1)

【特許請求の範囲】[Claims] 1、サーマルヘッド、感熱記録紙、プラテンローラ及び
アースからなる感熱記録装置において、該プラテンロー
ラとアースの間にスイッチを設け、前記感熱記録紙が搬
送状態及び停止状態の場合に、前記スイッチをそれぞれ
オン状態及びオフ状態にすることを特徴とする感熱記録
装置。
1. In a thermal recording device consisting of a thermal head, a thermal recording paper, a platen roller, and a ground, a switch is provided between the platen roller and the ground, and when the thermal recording paper is in a conveying state and a stopped state, the switch is activated. A thermal recording device characterized by being able to be turned on and off.
JP62084717A 1987-04-08 1987-04-08 Thermal recorder Pending JPS63251273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62084717A JPS63251273A (en) 1987-04-08 1987-04-08 Thermal recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62084717A JPS63251273A (en) 1987-04-08 1987-04-08 Thermal recorder

Publications (1)

Publication Number Publication Date
JPS63251273A true JPS63251273A (en) 1988-10-18

Family

ID=13838431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62084717A Pending JPS63251273A (en) 1987-04-08 1987-04-08 Thermal recorder

Country Status (1)

Country Link
JP (1) JPS63251273A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111212509A (en) * 2020-01-16 2020-05-29 吕明猷 Roller static electricity eliminating mechanism for ticket reader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111212509A (en) * 2020-01-16 2020-05-29 吕明猷 Roller static electricity eliminating mechanism for ticket reader

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