JPS6011377A - Platen - Google Patents

Platen

Info

Publication number
JPS6011377A
JPS6011377A JP11817283A JP11817283A JPS6011377A JP S6011377 A JPS6011377 A JP S6011377A JP 11817283 A JP11817283 A JP 11817283A JP 11817283 A JP11817283 A JP 11817283A JP S6011377 A JPS6011377 A JP S6011377A
Authority
JP
Japan
Prior art keywords
platen
printing
thermal head
center
rubber
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
JP11817283A
Other languages
Japanese (ja)
Inventor
Mineo Nozaki
野崎 岑生
Osamu Asakura
修 朝倉
Masazumi Nagashima
長島 正澄
Yoshiro Uchikata
佳郎 打方
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP11817283A priority Critical patent/JPS6011377A/en
Publication of JPS6011377A publication Critical patent/JPS6011377A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices 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
    • B41J11/02Platens
    • B41J11/08Bar or like line-size platens

Landscapes

  • Handling Of Sheets (AREA)

Abstract

PURPOSE:To perform high quality printing while preventing the generation of a broken character by constituting the titled platen of rubber with elastic hardness of 16-60 deg. so as to bring the surface in its printing front surface side into flat contact with a thermal head by slight pressing in a printing direction. CONSTITUTION:During printing, a thermal head 6 is brought into contact with a platen 20 under pressure vertically in a diameter direction to the center of said platen 20 around its center, that is, the center of thermal elements 7a-7g. The surface of said head 6 at the pressure contact part is elastically deformed to a flat surface shape by this pressure contact force and the thermal head 6 is uniformly contacted with the platen 20 through printing paper 9 without forming a gap therebetween. Therefore, a broken character is not generated during printing. In this case, because the surface 20a of the platen 20 is a curved surface near to a flat surface, the dimension of elastic deformation for obtaining a flat surface is made smaller than a conventional dimension and pressure conact force is also made small. In addition, because a space S is present, the platen 20 is easy to elastically deform.

Description

【発明の詳細な説明】 技術分野 本発明はプラテンに関し、特Oこシリアル印字を行なう
サーマ/L/’プリンタをこ用いられ、ゴムから形成さ
れたプラテンに関する。
TECHNICAL FIELD The present invention relates to a platen, and more particularly to a platen made of rubber and used in a Therma/L/' printer for serial printing.

従来技術 5の種の従来のプラテンには、印字正面側の表面が細長
い長方形をなす棒状に形成されたものと、細長い円柱状
に形成されたものとで2種類あるが、以下にそれぞれの
プラテンを用いたサーマルプリンタの要部構成と動作を
説明し、従来のプラテンから生じる欠点を説明する。
There are two types of conventional platens of the type described in Prior Art 5: those whose front surface for printing is formed into a long rectangular bar shape and those whose surface is formed into an elongated cylinder shape. The main structure and operation of a thermal printer using a conventional platen will be explained, and the drawbacks of a conventional platen will be explained.

最初に細長い長方形をなす棒状のプラテンによるサーマ
ルプリンタの要部構成を第1図〜第3図Qこ従って説明
する。
First, the main structure of a thermal printer using a bar-shaped platen in the form of an elongated rectangle will be explained with reference to FIGS. 1 to 3Q.

第1図において符号lで示すものがプラテンで、ゴム弾
性硬度が40度〜60度のゴムから形成され、印字正面
側の表面1aが印字桁方向に細長い長方形をなした厚板
状に形成されており、その表面1aは均一な平面に形成
されている。
In Fig. 1, the platen indicated by the symbol l is made of rubber with a rubber elastic hardness of 40 degrees to 60 degrees, and the surface 1a on the front side of printing is formed in the shape of a thick rectangle elongated in the direction of the printing digit. The surface 1a is formed into a uniform plane.

このプラテン1はその支持体であるプラテンボルダ2上
に固定されている。
This platen 1 is fixed on a platen boulder 2 which is its support.

また符号3で示すものはキャリッジ軸で、異形断面を有
し、プラテン1に対して平行にがつ回動自在に横架され
ている。キャリッジ軸3」二にはキャリッジ4が摺動自
在に取り伺けられており、キヤリツジ4のプラテン)と
対向した印字正面をこはフレキシブルプリント4K 5
 +こ接続されたサーマルヘッド6が固定されている。
Further, the reference numeral 3 denotes a carriage shaft, which has an irregular cross section and is horizontally suspended parallel to the platen 1 so as to be freely rotatable. A carriage 4 is slidably attached to the carriage shaft 3, and the printing front facing the carriage 4 platen is printed on the flexible print 4K 5.
The connected thermal head 6 is fixed.

第2図に示すようにサーマルヘッド6のプラテン側の正
面には右側縁に沿って例えば7個の感熱素子7a〜7g
が一列に配置されており、それぞれの感熱素子7a〜7
gはフレキシブルプリン)・板5の各信号線に接続され
ている。
As shown in FIG. 2, on the front surface of the thermal head 6 on the platen side, there are, for example, seven heat sensitive elements 7a to 7g along the right edge.
The heat-sensitive elements 7a to 7 are arranged in a row, and each heat-sensitive element 7a to 7
g is a flexible print) and is connected to each signal line of the board 5.

一方キャリツジ4の両側には不図示の駆動手段をこより
引張されるワイヤ8が張架されている。
On the other hand, wires 8 are stretched on both sides of the carriage 4 and are stretched by a drive means (not shown).

以」−の構成において、印字時にはサーマルヘッド6が
印字用紙9をプラテン1の表面1aJ−に圧接するが、
この時サーマルヘッド6の感熱素子7a〜7gおよびそ
の近傍のみが圧接するようにサーマルヘッド6およびキ
ャリッジ4の正面はプラテンlの平向方向に対して傾斜
している。
In the configuration described below, the thermal head 6 presses the printing paper 9 against the surface 1aJ- of the platen 1 during printing.
At this time, the front surfaces of the thermal head 6 and the carriage 4 are inclined with respect to the horizontal direction of the platen 1 so that only the heat-sensitive elements 7a to 7g of the thermal head 6 and their vicinity are pressed against each other.

印字時に゛は不図示の中央制御装置C以下CPUと略称
する)の制御により、キャリッジ軸3が第1図中矢印C
方向に回転されることによりキャリッジ4が矢印B方向
に回動し、理想的な状態では第3図(8月こ示すように
サーマルヘッド5が印字用紙9を介してプラテン°1の
表面に隙間なく均一に圧接する。ここで印字用紙、9は
加熱をこより加熱部分が発色する感熱紙であるとする・
しかる後にCPUは不図示の駆動手段を駆動させるこi
によりワイヤ8を引張させてキャリッジ4を所定時間毎
(3半ドツト分ずつ第1図中矢印C方向に移動させる。
During printing, the carriage shaft 3 moves in the direction of arrow C in FIG.
The carriage 4 rotates in the direction of the arrow B, and in an ideal state, the thermal head 5 passes through the printing paper 9 and forms a gap on the surface of the platen 1, as shown in FIG. The printing paper 9 is assumed to be thermal paper whose heated part develops color when heated.
After that, the CPU drives a driving means (not shown).
By pulling the wire 8, the carriage 4 is moved in the direction of arrow C in FIG.

同時に不図示の文字発生器のパターンに従って発熱素子
7a〜7g+こ選択的に電気信号を印加して発熱させ、
印字用紙9を発色させてドツトパターンで印字を行なう
At the same time, electric signals are selectively applied to the heating elements 7a to 7g+ to generate heat according to the pattern of a character generator (not shown);
The printing paper 9 is colored and printed in a dot pattern.

すなわち第3図(b)に示すように、矢印C方向に移動
しつつ時刻tl 、 t2.13 、 t4 、”’旬
に感熱素子7a〜7gに順次7g、7f、7@。
That is, as shown in FIG. 3(b), while moving in the direction of arrow C, at times tl, t2.13, t4, the heat-sensitive elements 7a to 7g are sequentially 7g, 7f, 7@.

7d、・・・というように選択的に信号を印加して、発
熱させることにより、時刻t1〜t1 毎における感熱
素子7a〜7gの位置に対応して各ドツトが印字され、
文字rAJが1”ットパターンで印字される。
By selectively applying signals such as 7d, . . . to generate heat, dots are printed corresponding to the positions of the heat-sensitive elements 7a to 7g at each time t1 to t1,
The characters rAJ are printed in a 1” dot pattern.

ところが以上の構成ではサーマルヘッド6を圧接時に第
3図(a)に示すように印字用紙9を介してプラテンl
の表面1a+こ隙間なく均一やこ圧接させることは非常
に困難である。とり・うのζよ、)。
However, in the above configuration, when the thermal head 6 is pressed into contact with the platen l through the printing paper 9, as shown in FIG.
It is very difficult to bring the surface 1a+ into uniform pressure contact without any gaps. Tori Uno ζ,).

ラテン1はガム弾性硬度の比較的高(・ゴム力箋らJ形
成されているとともQこ、表面1aが平面であるjこめ
である。
Latin 1 has a relatively high gum elastic hardness (and is formed with a rubber band), and the surface 1a is flat.

平面である表面1a+こすぎまなく均−Gこ4ナーマル
ヘツド6を圧接するGこ(よ各構成部品の高し・精度お
よび高い組み立て精度が必要であり、たとえ高い精度で
構成されていたとしても動作時の振動や衝撃によって精
度は狂ってしまう力・らである。
The surface 1a is flat, the surface 1a is flat, the G is evenly distributed, the G is pressed evenly, and the G is pressed against the thermal head 6. Accuracy can be lost due to vibrations and shocks over time.

以−Lの理由からサーマルヘッド6カ;プラテン以外こ
均一に圧接しない場合、印字]くクーンの士下刃;欠け
るいわゆる字欠けが発生する。
For the following reasons, if the thermal head 6 does not come into uniform pressure contact with the parts other than the platen, a so-called character chipping occurs, where the printing part is chipped.

例えば第3図(c)+こ示すようQこ圧接時Qこサーマ
ルヘッド6の上部に隙間が存在する場合、第3図(d)
4こ示すように印字文字「A」の上部力;欠ける。また
第3図(e)?こ示すように下部に隙間が生じると第3
図(f)に示すように印字文字「A−の下部が欠ける。
For example, if there is a gap at the top of the thermal head 6 during pressure welding as shown in Figure 3(c) + Q, then Figure 3(d)
4. The upper force of the printed character "A" is missing as shown here. Also, Figure 3(e)? If there is a gap at the bottom as shown here, the third
As shown in Figure (f), the lower part of the printed character "A-" is missing.

また第3図(g)に示すのtよフ。Also, as shown in FIG. 3(g).

ラテン1がねじれており、右側Gこ行く程上部の隙間が
大きくなる場合で、この場合第3図(1])に示すよう
【こ印字文字1”A、Jは右やこ行く程」二部が大きく
欠ける。
In the case where Latin 1 is twisted and the gap at the top becomes larger as it goes to the right side G, in this case, as shown in Figure 3 (1) is greatly lacking.

次に従来の円柱形に形成されたプラテンを用(・たサー
マルプリンタの構成および動作を第4図(a)〜(C)
に従って説明する。ここでプラテン以外の]・1k或は
従来と同様である。
Next, the configuration and operation of a conventional thermal printer using a cylindrical platen are shown in Figures 4 (a) to (C).
Explain according to the following. 1k or the same as the conventional one except for the platen.

符号10で示すプラテンはゴム弾性硬度が25度〜40
度のゴムすなわち先述の従来例よりもコ′ム弾性硬度の
低いゴムから円柱形に形成され、両側の芯を回転自在な
プラテン軸INこまって支持されている。この場合プラ
テン10は印字台であるとともに印字用紙9を印字行方
向に送る紙送りローラでもある。
The platen designated by numeral 10 has a rubber elastic hardness of 25 degrees to 40 degrees.
It is formed into a cylindrical shape from high-grade rubber, that is, rubber whose comb elastic hardness is lower than that of the conventional example described above, and the cores on both sides are supported by a rotatable platen shaft IN. In this case, the platen 10 serves not only as a printing stand but also as a paper feed roller that feeds the printing paper 9 in the printing line direction.

印字時には第4図(b)+こ示すように、サーマルヘッ
ド6′ はその中心すなわち感熱素子7a〜7gの中心
を中心としてプラテン)Oの径方向に1 垂直に圧接さ
れる。この場合プラテン10は柔軟なゴムから形成され
ているため第4図(C)※こ詳細に示すように符号F1
〜F3 で示ず圧接力により圧接部分の表面が寸法ノ・
□ つぶれ、感熱素子7a〜7gζこ対向する部分の幅
C竹・が偏平になり、感熱素子7a〜7gの部分は隙間
なくプラテン1゜に圧接する。
During printing, as shown in FIG. 4(b), the thermal head 6' is pressed perpendicularly in the radial direction of the platen O with its center, that is, the center of the heat-sensitive elements 7a to 7g, as the center. In this case, since the platen 10 is made of flexible rubber, the symbol F1 is shown in FIG. 4(C).
〜F3 The surface of the pressure welded part becomes dimensional due to the pressure welding force.
□ When the heat-sensitive elements 7a to 7g are crushed, the width of the opposing portion becomes flat, and the heat-sensitive elements 7a to 7g are pressed against the platen 1° without any gaps.

このような構成Gこよれば感熱素子7a〜7gが隙間な
くプラテンIOに圧接されるので字欠けの発生を防止で
きる。
With this configuration G, the heat-sensitive elements 7a to 7g are pressed against the platen IO without any gaps, so that occurrence of missing characters can be prevented.

しかしこの構成では幅CHの部分を偏平につぶすために
比較的強い圧接力F1− F3を必要とし、圧接力Fl
”F3 が強い場合、サーマルヘッド6のプラテン10
に対する摩擦力が大きくなる。その結果キャリッジ4を
駆動させるためのトルクが大きくなりサーマルプリンタ
の電力消費の増大を招く。またサーマルヘッド6の中央
部の圧接力F。
However, this configuration requires a relatively strong pressing force F1-F3 to flatten the portion of the width CH, and the pressing force Fl
"If F3 is strong, the platen 10 of the thermal head 6
The frictional force against the As a result, the torque for driving the carriage 4 increases, leading to an increase in power consumption of the thermal printer. Also, the pressing force F at the center of the thermal head 6.

が大きく上部と下部の圧接力Fl 、 F3 はそれに
より小さく゛なり、部分によって圧接力が異なるので、
部分によって発熱部の転移温度が異なり印字の濃淡の差
が生じる。
is large, and the pressure contact forces Fl and F3 at the upper and lower parts become smaller, and the pressure contact forces differ depending on the part, so
The transition temperature of the heat generating part differs depending on the part, resulting in a difference in the density of the print.

また上記の圧接力を弱くするためにプラテン10の半径
R1を大きくして幅CHの部分を偏平に近くした場合に
は、プラテンIOが大きくなりプリンタの大型化を招く
Furthermore, if the radius R1 of the platen 10 is increased to make the width CH portion nearly flat in order to weaken the above-mentioned pressing force, the platen IO becomes large, leading to an increase in the size of the printer.

またそもそもゴム弾性硬度の低いゴムから均一な丸いプ
ラテンを精度高く形成すること自体が困難である。
Furthermore, it is difficult to form a uniform round platen with high accuracy from rubber having low rubber elastic hardness.

目0勺 本発明は以−にのような従来の欠点を解消するためにな
されたもので、シリアル印字を行なうサーマルプリンタ
に用いられ、ゴムからなるプラテンにおいて、安価で簡
単な構成によりプリンタ全体の小型化および消費電力の
削減が図れ、プリンタの構成部品精度組立精度に多少の
狂いがある場合にも字欠けの発生を防止し高い品位の印
字を可能にできるノ°ラテンを提供することを目的とし
ている。
The present invention was made in order to eliminate the drawbacks of the conventional printers as described above, and is used in a thermal printer that performs serial printing.It is used in a rubber platen, and is inexpensive and has a simple configuration. The purpose is to provide a printer that is smaller and consumes less power, prevents missing characters, and enables high-quality printing even when there is some deviation in the precision and assembly of the printer's component parts. It is said that

実施例 以下第5図(a)〜(C)に示した実施例Gこ基づいて
本発明の詳細な説明する。図中第1図および第4図と同
一部分には同一符号を付し、その説明は省略する、すな
わちプラテン20およびプラテン21以外の部分の構成
は従来と同様であるので、その説明は省略する。
EXAMPLE The present invention will be described in detail based on Example G shown in FIGS. 5(a) to 5(C). In the figure, the same parts as in FIGS. 1 and 4 are given the same reference numerals, and the explanation thereof will be omitted. In other words, the structure of the parts other than the platen 20 and the platen 21 is the same as the conventional one, so the explanation thereof will be omitted. .

第5図(a)において符号20で示されるプラテンは、
ゴム弾性硬度が15度〜60度の低い硬度のゴムから形
成され、断面が扇形をなし印字正面側の表面20aが1
11長い略矩形をなず棒状Qこ形成されているう表面2
0.aは図中縦方向すなわち印字行方向※こ対して円弧
状に湾曲した曲面となっており、第5図(b)中に符号
R2で示す半径の曲率を有する。この曲率半径はサーマ
ルプリンタの用途により8mm〜100mM程度に設定
される。
The platen designated by reference numeral 20 in FIG. 5(a) is
It is made of rubber with a low rubber elastic hardness of 15 to 60 degrees, has a fan-shaped cross section, and has a surface 20a on the front side of printing.
11 Long substantially rectangular, rod-shaped surface 2
0. A is a curved surface curved in an arc shape in the vertical direction in the figure, that is, in the printing line direction*, and has a radius of curvature indicated by the symbol R2 in FIG. 5(b). This radius of curvature is set to about 8 mm to 100 mm depending on the purpose of the thermal printer.

また符号21で示すプラテンボルダ21は剛性の高い金
属等の材料から角柱状※こ形成され、印字正面側に断面
が矩形状の深い長溝21aを有し断面が略コの字状に形
成されている。
Further, the platen boulder 21 indicated by the reference numeral 21 is formed into a prismatic shape* from a material such as a highly rigid metal, and has a deep long groove 21a with a rectangular cross section on the front side of the print, and has a substantially U-shaped cross section. There is.

プラテン20は表面20aを印字正面に臨ませた状態で
プラテンボルダ21の長溝21a中に嵌合固定されてい
る。この場合長溝21aの断面は矩形状であるのに対し
てプラテン20の断面は扇形であるので、長溝21aの
壁面とプラテン20の側面との間Qこは符号Sで示すス
ペースが画成される。
The platen 20 is fitted and fixed into the long groove 21a of the platen boulder 21 with the front surface 20a facing the printing surface. In this case, the cross section of the long groove 21a is rectangular, whereas the cross section of the platen 20 is fan-shaped, so a space Q is defined between the wall surface of the long groove 21a and the side surface of the platen 20, which is indicated by the symbol S. .

以上の構成によればプラテン20の厚み寸法および高さ
寸法を大きくとらずに曲率の半径R2を大きく設定でき
、表面1aを平面に近い曲面にすることができる。
According to the above configuration, the radius of curvature R2 can be set large without increasing the thickness and height of the platen 20, and the surface 1a can be made into a curved surface close to a flat surface.

印字時には第5図(C)に示すようにサーマルヘッド6
はその中心すなわち感熱素子7a〜7gの中心を中心と
してプラテン20の中心Gこ径方向に垂直に圧接される
。この圧接力Qこより圧接部分の表面が平面形状に弾性
変形し、サーマルヘッド6は印字用紙9を介してプラテ
ンに隙間なく均一に圧接するので印字時に字欠けは生じ
ない。
During printing, the thermal head 6 is activated as shown in Fig. 5(C).
is pressed perpendicularly to the radial direction of the center G of the platen 20 with its center, that is, the center of the heat-sensitive elements 7a to 7g, as the center. Due to this pressing force Q, the surface of the pressed portion is elastically deformed into a planar shape, and the thermal head 6 is pressed uniformly to the platen through the printing paper 9 without any gaps, so that no missing characters occur during printing.

またこの場合に、上述したように表面20aは平面に近
い曲面であるので、平面にするだめの弾性変形の寸法J
2は先述の従来例の寸法−!1より小さくて済むため、
圧接力も小さくて済む。
Further, in this case, since the surface 20a is a curved surface close to a flat surface as described above, the dimension J of elastic deformation required to make the surface 20a flat is
2 is the dimension of the conventional example mentioned above -! Since it can be smaller than 1,
The pressing force can also be small.

しかもプラテン20の両側面には弾性変形を逃がすため
のスペースSが存在するので、プラテン20は容易に弾
性変形する。このため」−記の圧接力はより小さくて済
む。
Furthermore, since there are spaces S on both sides of the platen 20 for releasing elastic deformation, the platen 20 easily deforms elastically. Therefore, the pressure contact force described in "-" can be smaller.

以−にのように圧接力が小さいことから、圧接部分の位
置の違いによる圧接力の差は小さいため、−印字文字内
で大きな濃淡の差は生じない。
Since the pressure contact force is small as described above, the difference in pressure contact force due to the difference in the position of the pressure contact portion is small, and therefore, a large difference in shading does not occur within the -printed characters.

また圧接力が小さいため、サーマル−ヘッド6のプラテ
ン20(印字用紙9)に対する摺動摩擦は小さいため、
キャリッジ4の!!ilA動のためのトルクは小さくて
済む。さらにプラテン20の形状自体も従来の円柱形状
に比して形成が容易である。
In addition, since the pressure contact force is small, the sliding friction of the thermal head 6 against the platen 20 (print paper 9) is small.
Carriage 4! ! A small torque is required for the ilA movement. Furthermore, the shape of the platen 20 itself is easier to form than the conventional cylindrical shape.

なお実施例では断面形状を扇形としたが勿論これに限る
ものではなく、例えば略矩形状や略台形状その他の形状
でもよい。要は印字表面の曲率と同曲率を有する円柱体
の断面積よりも小さい断面積を有する形状であればよい
Although the cross-sectional shape is fan-shaped in the embodiment, it is of course not limited to this, and may be, for example, approximately rectangular, approximately trapezoidal, or other shapes. In short, any shape may be used as long as it has a cross-sectional area smaller than that of a cylinder having the same curvature as the printing surface.

効果 以」−の説明から明らかなように本発明Qこよればシリ
アル印字を行なうサーマルプリンタに用いられ、ゴムか
らなるプラテンにおいて、ゴム弾性硬度が15度以上6
0度以下のゴムからなり、印字正面側の表面が印字行方
向に半径8mm以1100mm以下の曲率で円孤状に湾
曲し、断面積が」3記と同じ曲率を有する円柱体の断面
積よりも小さく形成された構成であるので、安価で簡単
な構成によりプリンタの構成部品精度、・組立精度Oこ
多少の狂いがある場合にも字欠けの発生を防止し、高い
品位で印字を行なわせることができる。またプラテン自
体を小さく構成できプリンタ全体の小型化が図れ、さら
にはプリンタの消費電力の削減が図れる。
As is clear from the explanation of ``Effects'', the present invention is used in a thermal printer that performs serial printing, and the platen made of rubber has a rubber elastic hardness of 15 degrees or more and 6 degrees.
The cross-sectional area of a cylindrical body made of rubber with a diameter of 0 degrees or less, whose front surface is curved in the printing line direction with a radius of 8 mm to 1,100 mm, and whose cross-sectional area is the same as curvature in item 3. Since it has a small configuration, it is inexpensive and simple, and even if there is some deviation in the accuracy of the printer's component parts and assembly accuracy, it prevents the occurrence of missing characters and prints with high quality. be able to. Furthermore, the platen itself can be configured to be small, making it possible to downsize the printer as a whole and further reduce the power consumption of the printer.

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

第1図は従来のプラテンによるサーマルプリンタの要部
の斜視図、第2図はサーマルヘッドの正面図、第3図(
a)、(c)、(e)、(g)はそれぞれ第1図のサー
マルプリンタの印字時におけるサーマルヘッドの圧接状
態を示す側面図、第3図(b)、(d)、(f)、(h
)はそれぞれの圧接状態における印字状態を示す説明図
、第4図(a)は他の従来のプラテンにょるサーマルプ
リンタの要部の斜視図、第4図(b)は第47a)の側
面図、第4図(C)は第4図(a)のプラテンによる印
字時の圧接状態を示す説明図、第5図(a)は本発明の
プラテンによるサーマルプリンタの要部の斜視図、第5
図(、b)、(c)はそれぞれ第5図(a)のプラテン
周辺部分の構成および印字時の圧接状態を説明する側面
図である。
Figure 1 is a perspective view of the main parts of a conventional thermal printer using a platen, Figure 2 is a front view of the thermal head, and Figure 3 (
a), (c), (e), and (g) are respectively side views showing the pressure contact state of the thermal head during printing with the thermal printer in Fig. 1, and Fig. 3 (b), (d), and (f). , (h
) is an explanatory diagram showing the printing state in each pressure contact state, FIG. 4(a) is a perspective view of the main parts of another conventional platen-based thermal printer, and FIG. 4(b) is a side view of No. 47a). , FIG. 4(C) is an explanatory view showing the pressure contact state during printing by the platen of FIG. 4(a), FIG. 5(a) is a perspective view of the main part of the thermal printer using the platen of the present invention,
FIGS. 5(b) and 5(c) are side views respectively illustrating the configuration of the peripheral portion of the platen in FIG. 5(a) and the pressure contact state during printing.

Claims (1)

【特許請求の範囲】[Claims] 印字用紙に圧接したサーマルヘッドを駆動させてシリア
ル印字を行なうサーマルプリンタQこ用いられ、ゴムか
ら形成されたプラテンにおいて、ゴム弾性硬度が15度
以上60度以下のゴムからなり、印字正面側の表面が印
字行方向に少しの抑圧でサーマルヘッドと平面的に接触
し、サーマルヘッドの走行に影響を及ぼさない大きな曲
率で円孤状Oこ湾曲し、断面積が前記曲率を有する円柱
体の断面積よりも小さく形成されたことを特徴とするプ
ラテン。
Thermal printer Q is used to perform serial printing by driving a thermal head that is in pressure contact with the printing paper.The platen is made of rubber and has a rubber elastic hardness of 15 degrees or more and 60 degrees or less. is in planar contact with the thermal head with slight pressure in the printing line direction, is curved in an arc shape with a large curvature that does not affect the running of the thermal head, and has a cross-sectional area of a cylindrical body having the above-mentioned curvature. A platen characterized by being formed smaller than the .
JP11817283A 1983-07-01 1983-07-01 Platen Pending JPS6011377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11817283A JPS6011377A (en) 1983-07-01 1983-07-01 Platen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11817283A JPS6011377A (en) 1983-07-01 1983-07-01 Platen

Publications (1)

Publication Number Publication Date
JPS6011377A true JPS6011377A (en) 1985-01-21

Family

ID=14729900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11817283A Pending JPS6011377A (en) 1983-07-01 1983-07-01 Platen

Country Status (1)

Country Link
JP (1) JPS6011377A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192978A (en) * 1984-03-13 1985-10-01 三菱電機株式会社 Display unit
US4940994A (en) * 1988-05-03 1990-07-10 U.S. Philips Corporation Thermal printer
US5090825A (en) * 1991-03-21 1992-02-25 Ncr Corporation Stabilizer for a floating platen
US5182573A (en) * 1989-11-30 1993-01-26 Samsung Electronics Co., Ltd. Multi-color-thermal printer with a movable printer head
WO2004076189A1 (en) * 2003-02-24 2004-09-10 Polaroid Corporation Platen assembly for thermal printer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192978A (en) * 1984-03-13 1985-10-01 三菱電機株式会社 Display unit
US4940994A (en) * 1988-05-03 1990-07-10 U.S. Philips Corporation Thermal printer
US5182573A (en) * 1989-11-30 1993-01-26 Samsung Electronics Co., Ltd. Multi-color-thermal printer with a movable printer head
US5090825A (en) * 1991-03-21 1992-02-25 Ncr Corporation Stabilizer for a floating platen
WO2004076189A1 (en) * 2003-02-24 2004-09-10 Polaroid Corporation Platen assembly for thermal printer
US7027077B2 (en) 2003-02-24 2006-04-11 Polaroid Corporation Platen assembly for thermal printer

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