JPH0121792B2 - - Google Patents
Info
- Publication number
- JPH0121792B2 JPH0121792B2 JP13488483A JP13488483A JPH0121792B2 JP H0121792 B2 JPH0121792 B2 JP H0121792B2 JP 13488483 A JP13488483 A JP 13488483A JP 13488483 A JP13488483 A JP 13488483A JP H0121792 B2 JPH0121792 B2 JP H0121792B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- thermal paper
- base
- thermal
- hole
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000007651 thermal printing Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000007639 printing Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
Landscapes
- Handling Of Continuous Sheets Of Paper (AREA)
- Electronic Switches (AREA)
Description
【発明の詳細な説明】 本発明は熱印字ヘツドに関する。[Detailed description of the invention] The present invention relates to thermal print heads.
従来、熱印字ヘツドでは、絶縁性の基体の表面
に発熱体が備えられて印字ヘツド面が形成されて
おり、この印字ヘツド面には発熱体を発熱させる
ための電流を制御する駆動回路などが、発熱体か
ら間隔をあけた位置に設けられている。このよう
な熱印字ヘツドでは、感熱紙のロールを交換した
場合や、感熱紙の先端から印字する場合、上流側
から給送された感熱紙が発熱体の熱によつて印字
されて下流側へ送出されるときに、感熱紙の先端
が駆動回路の電子部品などに引掛つて巻込れるこ
とがある。この感熱紙の巻込みを防止するととも
に、駆動回路を保護するために、発熱体および発
熱体周辺部以外の駆動回路などを覆う保護カバー
を設けたものがあるが、この保護カバーの発熱体
側の端部と印字ヘツド面との間には隙間があり、
印字された感熱紙が円滑に給送されず、このため
この隙間を合成樹脂などで埋めたりしており、多
くの手間を要し、しかも確実に感熱紙を給送する
ことができなかつた。 Conventionally, in thermal printing heads, a heating element is provided on the surface of an insulating base to form the printing head surface, and this printing head surface is equipped with a drive circuit that controls the current to generate heat in the heating element. , located at a distance from the heating element. In such a thermal printing head, when the roll of thermal paper is replaced or when printing from the leading edge of the thermal paper, the thermal paper fed from the upstream side is printed by the heat of the heating element and sent to the downstream side. When being fed out, the leading edge of the thermal paper may get caught and become entangled in the electronic components of the drive circuit. In order to prevent this thermal paper from getting entangled and to protect the drive circuit, some devices are equipped with a protective cover that covers the heating element and the drive circuit other than the area around the heating element. There is a gap between the edge and the printing head surface.
Printed thermal paper is not fed smoothly, and therefore the gaps are filled with synthetic resin or the like, which requires a lot of effort and makes it impossible to feed the thermal paper reliably.
本発明は上述の点に鑑みてなされたものであつ
て、感熱紙の引掛りを防止し、感熱紙を円滑に下
流側に給送できるようにした熱印字ヘツドを提供
することを目的とする。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a thermal printing head that prevents thermal paper from getting caught and can smoothly feed the thermal paper downstream. .
以下、図面によつて本発明の実施例について詳
細に説明する。図面は、本発明の一実施例の断面
図である。セラミツクなどの絶縁材料から成る基
体１の表面には、発熱体２が備えられ、基体１の
裏面には放熱板３が密着して設けられる。基体１
の表面の両端部には、発熱体２への電流を制御す
るため駆動回路４が設けられており、さらに、こ
の駆動回路４を外囲するように屈曲した保護カバ
ー５が形成される。発熱体２の上方には、矢符１
１方向に回転するローラプラテン６が設けられ
る。感熱紙７は、図示しない給送手段によつて矢
符８方向に給送され、ローラプラテン６と発熱体
２とによつて挾圧されて印字される。 Embodiments of the present invention will be described in detail below with reference to the drawings. The drawing is a cross-sectional view of one embodiment of the invention. A heating element 2 is provided on the front surface of a base 1 made of an insulating material such as ceramic, and a heat sink 3 is provided in close contact with the back surface of the base 1. Base 1
A driving circuit 4 is provided at both ends of the surface of the heating element 2 to control the current flowing to the heating element 2, and a protective cover 5 is formed to surround the driving circuit 4. Above the heating element 2, there is an arrow mark 1.
A roller platen 6 is provided that rotates in one direction. Thermal paper 7 is fed in the direction of arrow 8 by a feeding means (not shown), and is clamped by roller platen 6 and heating element 2 to print.
本発明に従う熱印字ヘツドでは、基体１に貫通
穴９が形成されるとともに、放熱板３には、貫通
穴９を貫通して印字ヘツド面に突出して感熱紙７
を案内する案内突起１０が形成される。貫通穴９
は、発熱体２に関して感熱紙７の給送方向の下流
側で、かつ発熱体２と保護カバー５との間に形成
される。この貫通穴９の形状は、放熱板３の案内
突起１０に対応する形状であり、この実施例では
矩形に形成されており、さらにローラプラテン６
の軸線方向（図面に垂直方向）に間隔をあけて複
数形成される。発熱体２と駆動回路４とは、これ
ら貫通穴９を迂回するように貫通穴９どうしの
間、もしくは貫通穴９の外側に形成された導体パ
ターン（図示せず）により接続されている。 In the thermal printing head according to the present invention, a through hole 9 is formed in the base 1, and a thermal paper 7 is formed in the heat dissipation plate 3 through the through hole 9 and protrudes onto the print head surface.
A guide protrusion 10 is formed to guide the. Through hole 9
is formed on the downstream side of the heating element 2 in the feeding direction of the thermal paper 7 and between the heating element 2 and the protective cover 5 . The shape of this through hole 9 corresponds to the guide protrusion 10 of the heat dissipation plate 3, and is formed in a rectangular shape in this embodiment.
A plurality of them are formed at intervals in the axial direction (perpendicular to the drawing). The heating element 2 and the drive circuit 4 are connected by a conductor pattern (not shown) formed between the through holes 9 or outside the through holes 9 so as to bypass these through holes 9.
放熱板３の案内突起１０もまた貫通孔９に対応
してローラプラテン６の軸線に沿つて複数形成さ
れており、感熱紙７を案内するための傾斜した案
内面１２を有する。 A plurality of guide protrusions 10 of the heat sink 3 are also formed along the axis of the roller platen 6 in correspondence with the through holes 9, and have an inclined guide surface 12 for guiding the thermal paper 7.
このように本発明に従う熱印字ヘツドでは、印
字ヘツド面に突出する案内突起１０を放熱板３に
形成したので、印字された感熱紙７が保護カバー
５の発熱体２側の端部と印字ヘツド面との隙間ｌ
へ入り込んで、引掛つたりすることが確実に防止
される。さらに、基体１は従来の熱印字ヘツドの
基体に貫通穴を形成するだけでよく、この基体１
に案内突起１０が形成された放熱板３を組合せる
ことによつて本発明の熱印字ヘツドが構成される
ので、簡易に製造することが可能である。 As described above, in the thermal printing head according to the present invention, the guide protrusion 10 protruding from the printing head surface is formed on the heat dissipation plate 3, so that the printed thermal paper 7 is connected to the end of the protective cover 5 on the heating element 2 side and the printing head. Gap between surface l
It is reliably prevented from getting caught and getting caught. Furthermore, the base 1 only requires forming through holes in the base of a conventional thermal printing head;
Since the thermal printing head of the present invention is constructed by combining the heat dissipating plate 3 on which the guide protrusion 10 is formed, it can be manufactured easily.
以上のように本発明によれば、基体には発熱体
に関して感熱紙の給送方向の下流側に貫通穴が形
成され、前記放熱板には前記貫通穴を貫通して感
熱紙を案内するための案内突起が形成されたの
で、感熱紙のロールを交換した場合や、感熱紙の
先端から印字する場合、印字された感熱紙が、駆
動回路等を構成する電子部品に引つ掛かつたり、
電子部品が保護カバーで覆われている場合はその
保護カバーと基体との隙間に引つ掛かつたりする
ことが確実に防止され、円滑に下流側に給送され
ることになる。 As described above, according to the present invention, a through hole is formed in the base body on the downstream side in the feeding direction of the thermal paper with respect to the heating element, and the through hole is formed in the heat dissipation plate for guiding the thermal paper through the through hole. Since the guide protrusion is formed, when replacing the roll of thermal paper or printing from the leading edge of the thermal paper, the printed thermal paper will not get caught on electronic components that make up the drive circuit, etc.
When electronic components are covered with a protective cover, they are reliably prevented from getting caught in the gap between the protective cover and the base, and are smoothly fed downstream.
また、案内突起が感熱紙と基体上の電子部品と
の引つ掛かりを防止するので、この引つ掛かりを
防止するための保護カバーを省略することができ
る。 Further, since the guide protrusions prevent the thermal paper from catching on the electronic components on the base, a protective cover for preventing this catching can be omitted.
図面は本発明の一実施例の断面図である。
１…基体、２…発熱体、３…放熱板、９…貫通
穴、１０…案内突起。
The drawing is a sectional view of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Base body, 2... Heating element, 3... Heat sink, 9... Through hole, 10... Guide protrusion.
Claims (1)
の表面で前記発熱体に関して少なくとも感熱紙の
給送方向の下流側に電子部品を取り付け、基体の
裏面には放熱板を設けてなる熱印字ヘツドにおい
て、 前記基体には、発熱体に関して感熱紙の給送方
向の下流側で発熱体と電子部品との間に貫通穴が
形成され、前記放熱板には前記貫通穴を貫通して
感熱紙を案内するための案内突起が形成されたこ
とを特徴とする熱印字ヘツド。[Claims] 1. A heating element is provided on the surface of an insulating base, an electronic component is attached to the surface of the base at least on the downstream side of the heating element in the feeding direction of the thermal paper, and a heat dissipating element is provided on the back surface of the base. In the thermal printing head provided with a plate, a through hole is formed in the base body between the heating element and the electronic component on the downstream side in the feeding direction of the thermal paper with respect to the heating element, and a through hole is formed in the heat dissipation plate between the heating element and the electronic component. A thermal printing head characterized in that a guide protrusion is formed to guide thermal paper through a hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13488483A JPS6025771A (en) | 1983-07-23 | 1983-07-23 | Thermal printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13488483A JPS6025771A (en) | 1983-07-23 | 1983-07-23 | Thermal printing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6025771A JPS6025771A (en) | 1985-02-08 |
| JPH0121792B2 true JPH0121792B2 (en) | 1989-04-24 |
Family
ID=15138755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13488483A Granted JPS6025771A (en) | 1983-07-23 | 1983-07-23 | Thermal printing head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025771A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349466A (en) * | 1986-08-19 | 1988-03-02 | Canon Inc | Thermal dot line type recorder |
| JPS6413343U (en) * | 1987-07-15 | 1989-01-24 |
-
1983
- 1983-07-23 JP JP13488483A patent/JPS6025771A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6025771A (en) | 1985-02-08 |
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