JPS61284468A - Platen apparatus of thermal printer - Google Patents
Platen apparatus of thermal printerInfo
- Publication number
- JPS61284468A JPS61284468A JP12650385A JP12650385A JPS61284468A JP S61284468 A JPS61284468 A JP S61284468A JP 12650385 A JP12650385 A JP 12650385A JP 12650385 A JP12650385 A JP 12650385A JP S61284468 A JPS61284468 A JP S61284468A
- Authority
- JP
- Japan
- Prior art keywords
- platen
- thermal head
- center
- paper
- pressing force
- 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
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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/02—Platens
- B41J11/08—Bar or like line-size platens
Landscapes
- Handling Of Sheets (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、サーマルヘッドとプラテンとの間に用紙を挾
持して印字するサーマルプリンタのプラテン装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a platen device for a thermal printer that prints by holding paper between a thermal head and a platen.
従来の技術
以下、図面を参照しながら従来のサーマルプリンタに於
けるプラテン装置の一例について説明する。2. Description of the Related Art An example of a platen device in a conventional thermal printer will be described below with reference to the drawings.
第３図は従来のプラテン装置の断面図である。FIG. 3 is a sectional view of a conventional platen device.
プラテン２０の両端にプラテン２０が回動自在に支持さ
れるだめの軸２０−１’ｊ５有し、プラテン支持体２１
に回動自在に支持されている。これはいわゆる自動調芯
式プラテン装置と呼ばれている〇一方、発熱体を有する
サーマルヘッド２２が回動自在に支持されるだめの軸２
２−１を有Ｌ、サーマルヘッド支持体２３に回動自在に
支持され、ばね２４によってサーマルヘッド２２はプラ
テン２゜に用紙２６全挾持して、押圧され密着し印字全
行なう。The platen 20 has a shaft 20-1'j5 on both ends of which the platen 20 is rotatably supported, and a platen support 21
It is rotatably supported. This is called a self-aligning platen device. On the other hand, a shaft 2 on which a thermal head 22 having a heating element is rotatably supported.
2-1 is rotatably supported by a thermal head support 23, and by means of a spring 24, the thermal head 22 completely holds the paper 26 on the platen 2° and is pressed into close contact with the platen 2° to perform the entire printing.
発明が解決しようとする問題点
しかしながら、上記のような構成では、各部品や取付け
の精度のバラツキによってサーマルヘッド２２がプラテ
ン２ｏと平行に密着せず、すき間ａが生じることがある
。又著しいすき間とが生じないまでも、第４図に示すよ
うにばね２４によって付加したサーマルヘッド２２の押
圧力Ｆが文字の高さ方向で大小を生じ、所期の印字品質
全達成するために多大なばね圧が必要とされ、その副作
用としてモータの消費電力の増加、サーマルヘッドの寿
命低下等の問題点を有していた。また、す−マルヘッド
２２が用紙２５を挾持してプラテン２０に密着する動作
で双方が回動しながら接触するので、用紙２６が所定の
位置よりずれてしまうという問題点も有していた。Problems to be Solved by the Invention However, in the above-described configuration, the thermal head 22 may not be in close contact with the platen 2o in parallel due to variations in the accuracy of each component and attachment, resulting in a gap a. Even if a significant gap does not occur, as shown in FIG. 4, the pressing force F of the thermal head 22 applied by the spring 24 will vary in the height direction of the character, making it difficult to achieve the desired print quality. A large amount of spring pressure is required, resulting in problems such as increased power consumption of the motor and shortened lifespan of the thermal head. In addition, since the thermal head 22 grips the paper 25 and comes into close contact with the platen 20, the two rotate and come into contact with each other, which causes the paper 26 to shift from a predetermined position.
本発明は、上記問題点に鑑み、サーマルヘッド押圧力の
軽減、印字品質の向上、サーマルヘッド送り用モータ消
費電力の低減、そして用紙の保護等を計ることを目的と
するサーマルプリンタのプラテン装置を提供するもので
ある。In view of the above problems, the present invention provides a platen device for a thermal printer that aims to reduce the pressing force of the thermal head, improve printing quality, reduce power consumption of the thermal head feeding motor, and protect paper. This is what we provide.
問題点を解決するだめの手段
上記の問題点を解決するために本発明のサーマルプリン
タのプラテン装置は、プラテンと上記プラテンの両端に
プラテン支持体に回動自在に支持される支持部を有し、
上記支持部による前記プラテンの回転中心と上記プラテ
ンの重心を同じ位置に設定するという構成を備えたもの
である。Means for Solving the Problems In order to solve the above problems, a platen device for a thermal printer according to the present invention includes a platen and support parts rotatably supported by platen supports at both ends of the platen. ,
The rotation center of the platen by the support portion and the center of gravity of the platen are set at the same position.
作 用
本発明は上記の構成によって、サーマルヘッドに
がプラテン１ばねによって押圧され、用紙を挾持して密
着する状態でサーマルヘッドとプラテンが完壁に平行に
密着し、押圧力の文字の高さでのアンバランスも解消さ
れ、すぐれた印字品質を達成できる。又、密着動作時に
用紙がずれてしまうということもなくなる。According to the above structure, the thermal head is pressed by the platen 1 spring, and the thermal head and the platen are in close contact with each other in parallel with the complete wall while sandwiching the paper, and the height of the pressing force is increased. This eliminates the imbalance in printing and achieves excellent print quality. Furthermore, there is no possibility that the paper will shift during the close contact operation.
実施例
以下、本発明の実施例について図面を参照しながら説明
する。第１図は本発明のプラテン装置の一実施例を示す
断面図である。プラテン１の両端にプラテン１が回動自
在に支持されるための軸１−１を有し、プラテン支持体
２に回動自在に支持されている。このプラテン支持部の
回動中心は設計的にプラテン１の重心と同じ位置に設定
している。一方、発熱体を有するサーマルヘッド３が回
動自在に支持されるだめの軸３−１を有し、サーマルヘ
ッド支持体４に回動自在に支持され、ばね６がサーマル
ヘッド３を用紙６を挾持してプラテン１に押圧する方向
にサーマルヘッド３とサーマルヘッド支持体４の間に取
付けられている。以上のようにプラテン装置を構成する
ことによって、印字状態でつまりサーマルヘッド３がば
ね６によってプラテン１に用紙６を挾持して押圧し密着
する状態で、プラテン１はその回動中心がプラテン１自
体の重心であるがゆえに、第２図に示すようにサーマル
ヘッド３と平行に密着し、ばね５によな圧接が達成され
る。よって、サーマルヘッド３の押圧力Ｆも従来に比べ
てかなり軽減することができる。また、サーマルヘッド
３が用紙６を挾持しつつプラテン１に密着する動作で用
紙６が所定の位置よりずれてしまうということもなくな
る。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of the platen device of the present invention. The platen 1 has shafts 1-1 at both ends thereof for rotatably supporting the platen 1, and is rotatably supported by a platen support 2. The center of rotation of this platen support portion is designed to be at the same position as the center of gravity of the platen 1. On the other hand, the thermal head 3 having a heating element has a shaft 3-1 on which it is rotatably supported, and is rotatably supported by the thermal head support 4, and the spring 6 causes the thermal head 3 to move the paper 6. It is attached between the thermal head 3 and the thermal head support 4 in a direction in which it is clamped and pressed against the platen 1. By configuring the platen device as described above, in the printing state, that is, in the state in which the thermal head 3 clamps and presses the paper 6 against the platen 1 by the spring 6, the rotation center of the platen 1 is the platen 1 itself. Because of its center of gravity, it comes into close contact with the thermal head 3 in parallel with it, as shown in FIG. 2, and a good pressure contact with the spring 5 is achieved. Therefore, the pressing force F of the thermal head 3 can also be significantly reduced compared to the conventional one. Furthermore, the paper 6 is no longer displaced from a predetermined position due to the operation of the thermal head 3 holding the paper 6 while closely contacting the platen 1.
また熱融溶性印字リボンを用いた熱転写式サーマルプリ
ンタに本発明を適用すると、リボンはサーマルヘッド３
と用紙６の間に介在して密着する構成となるので、上記
の効果はさらに有効となる。Furthermore, when the present invention is applied to a thermal transfer type thermal printer using a heat-melting printing ribbon, the ribbon is attached to the thermal head 3.
Since the paper 6 is interposed between and in close contact with the paper 6, the above effect becomes even more effective.
発明の効果 １１、
以上のように本発明のサーマルプリンタのプラテン装置
によれば、次の効果を得ることができる。Effects of the Invention 11. As described above, according to the platen device for a thermal printer of the present invention, the following effects can be obtained.
（１）サーマルヘッドとプラテンが平行に密着し、サー
マルヘッドの押圧力が均等化され良好な印字品質が得ら
れる。(1) The thermal head and the platen are in close contact with each other in parallel, the pressing force of the thermal head is equalized, and good printing quality can be obtained.
消費電力が減少する０又、サーマルヘッドの耐摩耗性、
寿命も向上する。Zero power consumption is reduced, thermal head wear resistance,
Lifespan is also improved.
（３）サーマルヘッドが用紙を挾持し、プラテンに密着
する際の用紙ずれも解消し、用紙の保護が計れる。(3) The thermal head grips the paper and eliminates paper misalignment when it comes into close contact with the platen, thereby protecting the paper.
第１図は本発明のサーマルプリンタのプラテン装置の一
実施例の断面図、第２図はその部分拡大図、第３図は従
来のサーマルプリ・ンタのプラテン装置の断面図、第４
図はその部分拡大図である。
１・・・・・・プラテン、２・・・・・・プラテン支持
体、３・・・−・・・サーマルヘッド、４・・・・・・
サーマルヘッド支持体、６・・・・・・ばね、６・・・
・・・用紙。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
第３図FIG. 1 is a sectional view of an embodiment of the platen device of a thermal printer according to the present invention, FIG. 2 is a partially enlarged view thereof, FIG. 3 is a sectional view of a conventional platen device of a thermal printer, and FIG.
The figure is a partially enlarged view. DESCRIPTION OF SYMBOLS 1...Platen, 2...Platen support, 3...Thermal head, 4...
Thermal head support, 6... Spring, 6...
...Paper. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3
Claims (1)
圧接するプラテンとの間に用紙を挾持して印字するよう
に構成し、前記プラテンの回動中心と上記プラテンの重
心を同じ位置に設定したことを特徴とするサーマルプリ
ンタのプラテン装置。The printer is configured to print by holding a sheet between a thermal head having a heating element and a platen that is in pressure contact with the thermal head, and the center of rotation of the platen and the center of gravity of the platen are set at the same position. A platen device for a thermal printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12650385A JPS61284468A (en) | 1985-06-11 | 1985-06-11 | Platen apparatus of thermal printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12650385A JPS61284468A (en) | 1985-06-11 | 1985-06-11 | Platen apparatus of thermal printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61284468A true JPS61284468A (en) | 1986-12-15 |
Family
ID=14936818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12650385A Pending JPS61284468A (en) | 1985-06-11 | 1985-06-11 | Platen apparatus of thermal printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61284468A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176458A (en) * | 1992-06-08 | 1993-01-05 | Eastman Kodak Company | Multiple position thermal printer head mechanism which is disturbance insensitive |
| US5611632A (en) * | 1990-02-13 | 1997-03-18 | Canon Kabushiki Kaisha | Recording apparatus having biased recording means |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227565A (en) * | 1975-08-27 | 1977-03-01 | Hitachi Ltd | Device for grounding gas insulated switch |
-
1985
- 1985-06-11 JP JP12650385A patent/JPS61284468A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227565A (en) * | 1975-08-27 | 1977-03-01 | Hitachi Ltd | Device for grounding gas insulated switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611632A (en) * | 1990-02-13 | 1997-03-18 | Canon Kabushiki Kaisha | Recording apparatus having biased recording means |
| US5176458A (en) * | 1992-06-08 | 1993-01-05 | Eastman Kodak Company | Multiple position thermal printer head mechanism which is disturbance insensitive |
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