JPH0712685B2 - Thermal head - Google Patents
Thermal headInfo
- Publication number
- JPH0712685B2 JPH0712685B2 JP59199514A JP19951484A JPH0712685B2 JP H0712685 B2 JPH0712685 B2 JP H0712685B2 JP 59199514 A JP59199514 A JP 59199514A JP 19951484 A JP19951484 A JP 19951484A JP H0712685 B2 JPH0712685 B2 JP H0712685B2
- Authority
- JP
- Japan
- Prior art keywords
- heat generating
- thermal head
- glaze layer
- glaze
- recording paper
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N97/00—Electric solid-state thin-film or thick-film devices, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electronic Switches (AREA)
- Non-Adjustable Resistors (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明はサーマルヘッドに関するものである。Description: TECHNICAL FIELD The present invention relates to a thermal head.
［従来技術］ 従来のサーマルヘッドは第１図（ａ），（ｂ）で図示し
たように、セラミック基板１上に平らなグレーズ層２を
設け、その上に発熱抵抗体3,電極層４及び保護層５を積
層する。そして、電極層４どうしの間の発熱抵抗体３の
領域が発熱して、記録紙への記録を行なうように構成さ
れている。[Prior Art] In a conventional thermal head, as shown in FIGS. 1A and 1B, a flat glaze layer 2 is provided on a ceramic substrate 1, and a heating resistor 3, an electrode layer 4 and a heating resistor 3 are provided on the flat glaze layer 2. The protective layer 5 is laminated. The area of the heating resistor 3 between the electrode layers 4 generates heat to record on the recording paper.
ところがこの構造を採用するとサーマルヘッド面が平ら
であり、発熱部分と記録紙との接触性が悪く、良好な記
録が得られなかった。However, when this structure is adopted, the thermal head surface is flat and the contact between the heat generating portion and the recording paper is poor, so good recording cannot be obtained.
そこで現在では、第２図（ａ），（ｂ）に示すようにカ
マボコ状に突出したグレーズ層６を複数の発熱領域を配
列した発熱部のみに設け、発熱抵抗体３をサーマルヘッ
ド表面から盛り上げた形状にし、発熱部と記録紙との接
触を良くしている。Therefore, at present, as shown in FIGS. 2 (a) and 2 (b), the glaze layer 6 protruding in a semi-circular shape is provided only on the heat generating portion in which a plurality of heat generating regions are arranged, and the heat generating resistor 3 is raised from the surface of the thermal head. It has a different shape to improve the contact between the heat generating part and the recording paper.
しかし、上記の構造では複数個の発熱抵抗体の発熱領域
が配列方向に平らに固定されているため、記録紙の表面
の凹凸の加減によって十分に接触しない発熱抵抗体がで
き、記録濃度にムラができてしまう。However, in the above structure, since the heat generating regions of the plurality of heat generating resistors are fixed flat in the arrangement direction, a heat generating resistor that does not come into sufficient contact can be created by adjusting the unevenness of the surface of the recording paper, resulting in uneven recording density. Will be created.
特に近年普及してきたサーマルヘッドと普通紙の間に感
熱転写リボンを挟んで記録する熱転写プリンタでは高記
録品位を要求されることもあって記録濃度ムラは大きな
問題となっている。In particular, a thermal transfer printer, which has been widely used in recent years, for recording with a thermal transfer ribbon sandwiched between a thermal head and plain paper, is required to have high recording quality, and uneven recording density is a serious problem.
［目的］ 本発明は上述した問題を解決するためになされたもので
あり、発熱抵抗体の有する発熱領域夫々と記録紙との接
触を良くし、記録紙表面の凹凸による記録濃度のムラを
なくすことが可能なサーマルヘッドを提供することを目
的とするものである。[Purpose] The present invention has been made to solve the above-described problems, and improves the contact between each heating area of the heating resistor and the recording paper, and eliminates the unevenness of the recording density due to the unevenness of the recording paper surface. It is an object of the present invention to provide a thermal head capable of performing the above.
［実施例］ 以下、本発明の実施例について説明する。[Examples] Examples of the present invention will be described below.
第３図は本発明の一実施例を説明するもので、本実施例
にあっては第３図（ａ）で示すように発熱抵抗体の発熱
領域夫々を形成する位置に、突出部を形成するためのグ
レーズ層７を印刷法により形成する。FIG. 3 explains one embodiment of the present invention. In this embodiment, as shown in FIG. 3 (a), a protruding portion is formed at a position where each heating area of the heating resistor is formed. The glaze layer 7 for forming is formed by a printing method.
次に第３図（ｂ）のように発熱抵抗体の発熱領域夫々を
配列する方向に一体的に保温のためのグレーズ層８を印
刷法により形成する。Next, as shown in FIG. 3B, a glaze layer 8 for heat retention is integrally formed by a printing method in the direction in which the heat generating regions of the heat generating resistors are arranged.
その後に第３図（ｃ），（ｄ）に示すように発熱抵抗体
3,電極層４及び保護層５を積層形成したものである。After that, as shown in FIGS. 3 (c) and 3 (d), the heating resistor
3, the electrode layer 4 and the protective layer 5 are laminated.
以上のように形成した発熱抵抗体３は、その発熱領域夫
々が他の部分より突出した形状になるため、発熱領域夫
々が完全に記録紙に接触するようになり、記録紙の表面
に多少の凹凸があっても記録濃度ムラはなくなる。In the heating resistor 3 formed as described above, each heating area has a shape projecting from other portions, so that each heating area comes into complete contact with the recording paper, and the surface of the recording paper is slightly exposed. Even if there is unevenness, unevenness in recording density disappears.
［効果］ 以上説明したように本発明のサーマルヘッドによると、
発熱抵抗体層の発熱領域に位置するグレーズ層部が、発
熱領域の配列方向に関して発熱領域外に位置するグレー
ズ層部より突出しているので、記録紙表面に多少の凹凸
があっても発熱領域夫々と記録紙表面とが良好に接触
し、記録濃度ムラの発生を防止して良好な記録が行える
という優れた効果を得ることができる。[Effect] As described above, according to the thermal head of the present invention,
Since the glaze layer portion located in the heating area of the heating resistor layer projects from the glaze layer portion located outside the heating area in the arrangement direction of the heating area, even if the recording paper surface has some irregularities, each heating area And the surface of the recording paper are in good contact with each other, and it is possible to obtain an excellent effect that good recording can be performed by preventing the occurrence of recording density unevenness.
第１図及び第２図は従来のサーマルヘッドの例を示すも
ので、第１図（ａ）は斜視図、第１図（ｂ）は一部拡大
断面図、第２図（ａ）は他の例を示す斜視図、第２図
（ｂ）は一部拡大断面図、第３図は本発明の実施例を示
すもので、第３図（ａ）及び第３図（ｂ）はその製造工
程を示す断面図、第３図（ｃ）はその実施例の平面図、
第３図（ｄ）はその断面図である。 １……セラミック基板 2,6,7,8……グレーズ層 ３……発熱抵抗体、４……電極層 ５……保護層1 and 2 show an example of a conventional thermal head. FIG. 1 (a) is a perspective view, FIG. 1 (b) is a partially enlarged sectional view, and FIG. 2 (a) is another. FIG. 2 (b) is a partially enlarged cross-sectional view, FIG. 3 shows an embodiment of the present invention, and FIGS. 3 (a) and 3 (b) show its manufacture. Sectional drawing which shows a process, FIG.3 (c) is the top view of the Example,
FIG. 3D is a sectional view thereof. 1 …… ceramic substrate 2,6,7,8 …… glaze layer 3 …… heating resistor 4 …… electrode layer 5 …… protective layer
Claims (2)
熱抵抗体層とを積層して設け、複数の前記発熱領域を列
状に配したサーマルヘッドにおいて、 前記発熱領域に位置するグレーズ層部は、前記列方向に
関して前記発熱領域外に位置するグレーズ層部より突出
していることを特徴とするサーマルヘッド。1. A thermal head in which a glaze layer and a heat generating resistor layer having a heat generating area are laminated on a substrate, and a plurality of the heat generating areas are arranged in a row. A glaze layer portion located in the heat generating area. Is projected from the glaze layer portion located outside the heat generating area in the column direction.
々の位置に対応して前記基板上に列状に設けられた複数
の凸状の第１グレーズ層と、該複数の第１グレーズ層夫
々を覆うように一体的に設けられた第２グレーズ層と、
を有することを特徴とする特許請求の範囲第１項に記載
のサーマルヘッド。2. The glaze layer includes a plurality of convex first glaze layers provided in a row on the substrate corresponding to the positions of the plurality of heat generating regions, and the plurality of first glaze layers. A second glaze layer integrally provided so as to cover each of them,
The thermal head according to claim 1, further comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59199514A JPH0712685B2 (en) | 1984-09-26 | 1984-09-26 | Thermal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59199514A JPH0712685B2 (en) | 1984-09-26 | 1984-09-26 | Thermal head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178664A JPS6178664A (en) | 1986-04-22 |
| JPH0712685B2 true JPH0712685B2 (en) | 1995-02-15 |
Family
ID=16409084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59199514A Expired - Fee Related JPH0712685B2 (en) | 1984-09-26 | 1984-09-26 | Thermal head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712685B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745073A (en) * | 1980-08-30 | 1982-03-13 | Tdk Corp | Heat-sensitive recording head |
| JPS59104963A (en) * | 1982-12-07 | 1984-06-18 | Seiko Instr & Electronics Ltd | Method of manufacturing thermal head |
| JPS59122242U (en) * | 1983-02-04 | 1984-08-17 | 株式会社田村電機製作所 | thermal head |
| JPS59146870A (en) * | 1983-02-10 | 1984-08-22 | Hitachi Ltd | Thermal head |
-
1984
- 1984-09-26 JP JP59199514A patent/JPH0712685B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6178664A (en) | 1986-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |