JPS60183752A - Long electronic device - Google Patents

Long electronic device

Info

Publication number
JPS60183752A
JPS60183752A JP59039434A JP3943484A JPS60183752A JP S60183752 A JPS60183752 A JP S60183752A JP 59039434 A JP59039434 A JP 59039434A JP 3943484 A JP3943484 A JP 3943484A JP S60183752 A JPS60183752 A JP S60183752A
Authority
JP
Japan
Prior art keywords
common electrode
metal film
bonded
substrate
supporting plate
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
JP59039434A
Other languages
Japanese (ja)
Inventor
Taizo Yoshida
泰三 吉田
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP59039434A priority Critical patent/JPS60183752A/en
Publication of JPS60183752A publication Critical patent/JPS60183752A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a long electronic device having the small voltage drop of a common electrode, having the favorable function of an element, being easy to be manufactured, and whose manufacturing cost is also low by a mehtod wherein a metal film is bonded on the common electrode. CONSTITUTION:A metal film 21 having proper width is bonded along the longitudinal direction of a substrate 13 on a common electrode 20. As the metal film 21, metal foil such as copper foil, etc. of several ten mum-1mm. thickness is suitable, for example. The metal film 21 thereof is bonded as to come in contact electrically and moreover mechanically with the upper side of common electrode 20 according to the methods of soldering or thermocompression bonding, etc. When the bonding process of the metal film 21 is to be performed according to soldering, it is favorable whether the process is performed before of behind bonding of the substrate 13 on a supporting plate 14, but when the process is to be performed according to thermocompression bonding, because the supporting plate 14 has large heat capacity, it is desirable to perform the process before the substrate 13 is to be bonded to the supporting plate 14.

Description

【発明の詳細な説明】 (技術分野) 本発明は、サーマルヘットや1,1ζ1)(発光ダイオ
ード)アレイのような混1戊欽積回F()であって、発
熱素子やL I’、 l)のような→j子を多数配列し
てなる長尺の電子装置に閏する。
DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a hybrid circuit F() such as a thermal head or a 1,1ζ1) (light-emitting diode) array, which has heat generating elements, L I', It is used for long electronic devices such as l), which are made up of a large number of →j elements arranged.

(従来技術) サーマルヘッドを例にとると、主な駆動方式としてダイ
レクI−ドライブ方式とダイオ−1〜マI−リックス方
式とがあるが、いずれもその等価回路は第1図のように
表わすことができる。Jは基板上で列状に配列された発
熱素子であり、各発熱素子1の一端は個別電極2を経て
通電加熱制御用のスイッチング回路3に接続され、また
それら発熱素子1の他端は、各発熱素子1に共通に接続
されたJIcIc極電極4て電源5に接kjaされてい
る。
(Prior art) Taking a thermal head as an example, there are two main driving methods: the direct I-drive method and the dioric I-drive method, and the equivalent circuits of both are shown in Figure 1. be able to. J is a heating element arranged in a row on the substrate, one end of each heating element 1 is connected to a switching circuit 3 for controlling current heating through an individual electrode 2, and the other end of each heating element 1 is A JIcIc electrode 4 commonly connected to each heating element 1 is connected to a power source 5.

発熱索子1の1個当りの抵抗値は数a〜数千Ωで、電源
5の電圧vOは通常数V〜30Vであるので、発熱素子
1個当りの電流値は数十〜200m Aである。しかし
、発熱ス・3子1は数十〜数千個配列されるので、全発
熱索子1が通電加熱さ扛る全黒パターンを印字する場合
には共通電極4には数十Aもの大電流が流れることにな
る。その結果、共通電極4での電圧降下分が電源5の電
圧VOに対して無視できない大きさになり、光熱ヌ・3
子1に印加される電圧が低下して印字の際の発色濃度の
低下を招く問題がある。
The resistance value of each heating element 1 is several amps to several thousand Ω, and the voltage vO of the power source 5 is usually several volts to 30V, so the current value per heating element is several tens to 200 mA. be. However, since tens to thousands of heating strips 1 are arranged, when printing an all-black pattern in which all the heating strips 1 are energized and heated, the common electrode 4 has a power of several tens of amperes. Current will flow. As a result, the voltage drop at the common electrode 4 becomes too large to be ignored with respect to the voltage VO of the power supply 5, and the
There is a problem in that the voltage applied to the element 1 decreases, resulting in a decrease in color density during printing.

全黒パターンは文字の印字ではあまり発生しないが、テ
レビ画面のような画像を印字する場合にはその発生の割
合が増してくる。文字印字でも、高密度又は長尺になっ
て完熟索子1の数が増し、たリ、高印字になる程、共通
電極4の電流値が大きくなって、共通電極4での電圧降
下に起因する問題が顕著になってくる。
All-black patterns do not occur often when printing characters, but their occurrence rate increases when printing images such as those on a television screen. Even when printing characters, the number of fully matured strings 1 increases due to high density or long lengths, and the higher the number of characters printed, the larger the current value of the common electrode 4 becomes, resulting in a voltage drop at the common electrode 4. The problem becomes more obvious.

このような共通電極での電圧降下の問題は、サーマルヘ
ッドのみでなく、LEL)アレイなどの電子装置におい
ても多数の素子に接続された共通電極を有する場合には
共通に存在する問題である。
Such a problem of voltage drop at the common electrode is a common problem not only in thermal heads but also in electronic devices such as LEL arrays when the common electrode is connected to a large number of elements.

このような共通電極4での電圧降下分を小さくするため
に、例えは第2図に示されるように、電源へつながる肉
厚金属板のハスライン10を共通電極4に平行に配置し
、パスライン10に一体的に設けら汎たターミナル11
と共通型i4i 4との間を手口J付けにて接続するこ
とが行なわ4%でいる。
In order to reduce the voltage drop at the common electrode 4, for example, as shown in FIG. Terminal 11 provided integrally with Terminal 10
4% of the time, connections were made between the I4i4 and the common type i4i4 using signature J.

12は発熱素子1の配列、13は発慈素r]、個別電極
2及び共通電極4が形成されている基板、14は基板1
3その他を支持する支持板である。
12 is an array of heating elements 1; 13 is a substrate on which heating elements r], individual electrodes 2 and common electrodes 4 are formed; 14 is a substrate 1
3. It is a support plate that supports others.

しかし、このパスラインlOを設ける方法では、図のよ
うなターミナル11をもつバスラ・rン10の構造が複
離であり、その製造は容易でない。また、ターミナル1
1毎に半田イづけを施さなければならないので製造工程
が多くなるのみならす、その半田付は部分が大きく盛り
上ってサーマルベーパ(感熱記録紙)が引っががる問題
もある。さらに、パスライン10のターミナル11の裏
面、すなわち共通電極4との接触面、がすべてのターミ
ナル11について同一平面になるように加工することは
難しく、そのため共通電極4とパスライン10との接触
不良が発生したり、またこのターミナル11部分の突出
のため外観を損ねるなどの問題もある。
However, in this method of providing the pass line IO, the structure of the bus lane 10 having the terminal 11 as shown in the figure is compound and is not easy to manufacture. Also, Terminal 1
Not only does the number of manufacturing steps increase because soldering must be applied for each step, but there is also the problem that the soldering can cause large bulges in the soldering area, causing the thermal vapor (heat-sensitive recording paper) to be pulled off. Furthermore, it is difficult to process so that the back surface of the terminal 11 of the pass line 10, that is, the contact surface with the common electrode 4, is the same plane for all the terminals 11, and as a result, poor contact between the common electrode 4 and the pass line 10 may occur. There are also problems such as the protrusion of the terminal 11 portion, which impairs the appearance.

他の対策としては、第3図に示されるように、共通電極
4上に例えは10μrn程度の金メッキ]5を施こすこ
とにより、共通電極の膜厚をJゾくして電流容量を増す
試みが検11Jされている。
As another countermeasure, as shown in Fig. 3, an attempt has been made to increase the current capacity by reducing the film thickness of the common electrode by applying gold plating of about 10 μrn on the common electrode 4. He has been tested 11J.

しかし、この方法では高価な金を多量に使用するため、
当然のこととしてコスト高を招く問題がある。
However, this method uses a large amount of expensive gold,
Naturally, there is the problem of increased costs.

(目n勺) 本発明は、多数の素子に共通に接続される共通電極の電
圧降下が小さく、素子の機能が良&J’なJ(入電子装
置であって、製造が容易で、製造コストも低い長尺電子
装置を提供することを1」的とするものである。
The present invention is an electronic device that is easy to manufacture and has a low voltage drop across a common electrode that is commonly connected to a large number of elements, and has good element functionality. The object of the present invention is to provide a long electronic device with a low cost.

(構成) 本発明のサーマルヘッドやり、 E Dアレイなどの長
尺電子装置では、その共通電極上に金属フィルムが接合
されている。
(Structure) In the elongated electronic device such as the thermal head spear and the ED array of the present invention, a metal film is bonded on the common electrode.

以下、実施例により本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.

第4図は本発明をライン型サーマルヘッドに適用した一
実施例を表わし、支持板14で支持されたクレーズドセ
ラミックなどの基板13+に、その長手方向に沿って発
熱素子1が列状に配列されて形成されている。各発熱素
子lの一端は駆動回路へ接続される個別電極2に接わ“
2され、他端は各発熱素子1に共通に接続さAしる共通
電極20に接続されている。この共通電極20は発熱素
子】の配列12の先端を回り込んで個別電極2側へ延び
、電源へ接続されるようになっている。
FIG. 4 shows an embodiment in which the present invention is applied to a line-type thermal head, in which heating elements 1 are arranged in rows along the longitudinal direction of a substrate 13+ such as crazed ceramic supported by a support plate 14. has been formed. One end of each heating element l is in contact with an individual electrode 2 connected to the drive circuit.
2, and the other end is connected to a common electrode 20 which is commonly connected to each heating element 1. This common electrode 20 wraps around the tip of the array 12 of heating elements, extends toward the individual electrode 2, and is connected to a power source.

本実施例において、共通電極20」二には基板13の長
手方向に沿って適当な幅の金属フィルム21が接合され
ている。
In this embodiment, a metal film 21 having an appropriate width is bonded to the common electrode 20'' along the longitudinal direction of the substrate 13.

金属フィルム21としては、例えばPメさ数十μm〜1
mmの胴箔などの金属箔か適当である。
For example, the metal film 21 has a P diameter of several tens of μm to 1
Metal foil such as mm body foil is suitable.

この金属フィルム2]は半田イ」け又は熱圧着などの方
法により、共通電極20上に電気的に、かつ機械的に接
触するように接合させることができる。
This metal film 2] can be bonded onto the common electrode 20 by a method such as soldering or thermocompression bonding so as to be in electrical and mechanical contact therewith.

金属フィルム21の接合工程は、半田伺けによる場合は
基板13を支持板】4」−に接着する前でも後でもよい
が、熱圧着による場合は、支持板14が大きな熱容基を
持っているのでノ、(板]:3を支持板14に接着する
前に行なう方がりfましい。
If the metal film 21 is bonded by soldering, it may be done before or after the substrate 13 is bonded to the support plate 4'', but if it is bonded by thermocompression, the support plate 14 has a large heat capacity. Therefore, it is better to do this before adhering the plate 3 to the support plate 14.

第4図の実施例では高電圧が印加される共通電極部分が
露出することになるので、第5図に示されるように金属
フィルム21を被覆するように絶縁性樹脂22を塗布し
てもよい。塗布さオした絶れ(性(A脂22はまた、そ
の表面か1゛;↑らかな形状になるので、サーマルペー
パ23が通過するl’95、金属フィルム21に引っか
かって通紙不良を起すのを防止することができる。
In the embodiment shown in FIG. 4, the common electrode portion to which a high voltage is applied is exposed, so an insulating resin 22 may be applied to cover the metal film 21 as shown in FIG. . Since the coated resin 22 also has a smooth shape on its surface, it may get caught on the metal film 21 through which the thermal paper 23 passes, causing paper passing failure. can be prevented.

なお、通常、発熱素子1上には耐摩耗層が形成されるが
、図では省略しである。他の図面でも同じである。
Note that although a wear-resistant layer is normally formed on the heating element 1, it is omitted in the figure. The same applies to other drawings.

第6図は他の実施例を表わす。本実施例では、金属フィ
ルム21としてポリイミドやガラスエポキシなどの耐熱
性絶縁性のテープ24に予め接着されたものを使用する
。それを図のように金属フィルム21側を共通電極20
上に重ね、第4図の場合と同様に半田付は又は熱厚着な
どの方法で接合させればよい。
FIG. 6 shows another embodiment. In this embodiment, a metal film 21 is used that is previously adhered to a heat-resistant insulating tape 24 made of polyimide, glass epoxy, or the like. As shown in the figure, connect the metal film 21 side to the common electrode 20.
They may be stacked on top of each other and joined by soldering or heat bonding as in the case of FIG.

本実施例では、金属フィルム21と共通電極20とを接
合させた時点で金属フィルム21の表面は絶縁フィルム
24で被われているので高電圧部が露出するという問題
はない。しかし、本実施例でも、サーマルペーパ通過時
の通紙不良発生の危険性を防止するために、第5図の場
合と同じく、第7図に示されるように金属フィルム21
及び絶縁フィルム24を被覆してその表面形状を滑らか
にするように絶縁性樹脂22を塗布すればよい。
In this embodiment, since the surface of the metal film 21 is covered with the insulating film 24 at the time when the metal film 21 and the common electrode 20 are bonded, there is no problem that the high voltage portion is exposed. However, in this embodiment as well, in order to prevent the risk of paper passing failure when the thermal paper passes, the metal film 21 is fixed as shown in FIG.
Then, the insulating resin 22 may be applied so as to cover the insulating film 24 and make the surface shape smooth.

以上の実施例によれば、金属フィルム21を接合したこ
とにより、共通電極20の厚さが増したことになり、例
えば全黒パターンを印字する場合など、共通型@20に
大電流を流したとしても共通電極20に大きな電圧降下
は発生しなくなり、したがって発熱素子1の印字濃度が
低下することもない。
According to the above embodiment, the thickness of the common electrode 20 is increased by joining the metal film 21, and a large current is passed through the common type @20, for example, when printing an all-black pattern. Even so, a large voltage drop does not occur on the common electrode 20, and therefore, the print density of the heating element 1 does not decrease.

以上の実施例は本発明をサーマルヘッドに適用した例で
あるが、LEDアレイなどの長尺の電子装置においても
、同様にしてその共通電極上に金属フィルムを接合させ
ることにより、本発明の目的を達成することができる。
Although the above embodiment is an example in which the present invention is applied to a thermal head, the purpose of the present invention can also be achieved by bonding a metal film on the common electrode in a long electronic device such as an LED array. can be achieved.

(効果) 本発明で共通電極上に接合される金属フィルムは単純な
形状であるので、第2図に示されたような従来のパスラ
インに比べると製造が極めて容易であり、共通電極との
間の接触不良も起らず、外観上もスマートで、通紙不良
対策も施しやすい。
(Effects) Since the metal film bonded onto the common electrode in the present invention has a simple shape, it is extremely easy to manufacture compared to the conventional pass line shown in FIG. There is no contact failure between the sheets, the appearance is sleek, and it is easy to take measures against paper feeding failures.

また、金属フィルムの材質としても、金のような高価な
材質を使わなくとも銅などの安価な材質で十分その機能
を達成することができる。
In addition, as for the material of the metal film, an inexpensive material such as copper can sufficiently achieve its function without using an expensive material such as gold.

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

第1図はサーマルヘッドを示す等価回路図、第2図は従
来のサーマルヘッドを示す部分斜視図、第3図は本発明
とは別に検討されているサーマルヘッドを示す断面図、
第4図は本発明をサーマルヘッドに適用した実施例を示
す部分斜視図、第5図ないし第7図はそれぞれ本発明を
サーマルヘッドに適用した他の実施例を示す断面図であ
る。 1・・・・・・発熱素子、 20・・・・・・共通電極
、21・・・・・・金属フィルム。 特許出願人 株式会社リコー
FIG. 1 is an equivalent circuit diagram showing a thermal head, FIG. 2 is a partial perspective view showing a conventional thermal head, and FIG. 3 is a sectional view showing a thermal head being considered separately from the present invention.
FIG. 4 is a partial perspective view showing an embodiment in which the present invention is applied to a thermal head, and FIGS. 5 to 7 are sectional views showing other embodiments in which the present invention is applied to a thermal head. 1...Heating element, 20...Common electrode, 21...Metal film. Patent applicant Ricoh Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (1)多数の素子を配列し、それらの素子に共通に接続
されて駆動用電流を供Kiする共通電極を有する長尺電
子装置において、前記共通電極」二に金属フィルムが接
合されていることを1.1′徴とする長尺電子装置。
(1) In a long electronic device in which a large number of elements are arranged and have a common electrode that is commonly connected to the elements and supplies a driving current, a metal film is bonded to the common electrode. A long electronic device with 1.1' characteristics.
JP59039434A 1984-03-01 1984-03-01 Long electronic device Pending JPS60183752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59039434A JPS60183752A (en) 1984-03-01 1984-03-01 Long electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59039434A JPS60183752A (en) 1984-03-01 1984-03-01 Long electronic device

Publications (1)

Publication Number Publication Date
JPS60183752A true JPS60183752A (en) 1985-09-19

Family

ID=12552888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59039434A Pending JPS60183752A (en) 1984-03-01 1984-03-01 Long electronic device

Country Status (1)

Country Link
JP (1) JPS60183752A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191437U (en) * 1986-05-28 1987-12-05
JPS63851U (en) * 1986-06-23 1988-01-06
JPH0276046U (en) * 1988-11-29 1990-06-11
JPH0295644U (en) * 1989-01-10 1990-07-30

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191437U (en) * 1986-05-28 1987-12-05
JPS63851U (en) * 1986-06-23 1988-01-06
JPH0276046U (en) * 1988-11-29 1990-06-11
JPH0295644U (en) * 1989-01-10 1990-07-30

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