JPS59194883A - Guide roller for preventing ribbon from skewing - Google Patents
Guide roller for preventing ribbon from skewingInfo
- Publication number
- JPS59194883A JPS59194883A JP6972683A JP6972683A JPS59194883A JP S59194883 A JPS59194883 A JP S59194883A JP 6972683 A JP6972683 A JP 6972683A JP 6972683 A JP6972683 A JP 6972683A JP S59194883 A JPS59194883 A JP S59194883A
- Authority
- JP
- Japan
- Prior art keywords
- ribbon
- guide roller
- printing
- print head
- shaft
- 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
- B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
- B41J35/04—Ink-ribbon guides
- B41J35/06—Ink-ribbon guides stationary
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
この発明は、プリンタで用いる印字用リボン、特にシリ
アルサーマルプリンタで用いる印字用リボンのガイドロ
ーラに関する。Description: TECHNICAL FIELD This invention relates to a printing ribbon used in a printer, and particularly to a guide roller for a printing ribbon used in a serial thermal printer.
更來皮片
通常、プリンタで使用する印字用リボンは、たとえば第
１図・第２図で示すようにリボンカートリッジ（１）に
収納されていて、プラテン（２）側に導出さ九るリボン
（３）部分はガイドローラ（４）・（４ａ）に案内され
ている。（５）は印字ヘッドである。Normally, the printing ribbon used in printers is stored in a ribbon cartridge (1) as shown in Figures 1 and 2, and the ribbon is drawn out to the platen (2). 3) is guided by guide rollers (4) and (4a). (5) is a print head.
ところが、このガイドローラ（４）・（４ａ）は第３図
で示すように、ピン軸（６）に軸孔（７）を全面密着さ
せた通常手段の滑合構成で組み付けられている。However, as shown in FIG. 3, the guide rollers (4) and (4a) are assembled in a conventional sliding configuration in which the shaft hole (7) is brought into full contact with the pin shaft (6).
上記において、リボン（３）は、一般にポリエステルな
どをベースとした薄手のフィルムにインク層をコーティ
ングしたものを使用している。In the above, the ribbon (3) is generally a thin film based on polyester or the like coated with an ink layer.
一方、サーマルプリンタにおける印字ヘッド（５）は、
プラテン（２）の印字位置に対向してヘッド面（５ａ）
が直角となるように構成されているが、リボン（３）を
はさんでプラテン（２）の用紙（８）面に圧接するヘッ
ド面（５ａ）は、組み立ての過程などにおいて、たとえ
ば第一４図・第５図で示すように若干の傾きが生じやす
い。このため、用紙（８）面に押し付けらおるリボン（
３）面と、ヘッド面（５ａ）との間では平行接触が保た
れなくなってしまい、導出されている部分のリボン（３
）に歪みが生じてしまう。On the other hand, the print head (5) in a thermal printer is
Head surface (5a) facing the printing position of the platen (2)
However, during the assembly process, for example, the head surface (5a) that presses against the paper (8) surface of the platen (2) with the ribbon (3) sandwiched therebetween is As shown in Figure 5, a slight inclination tends to occur. Therefore, the ribbon (
3) Parallel contact is no longer maintained between the surface and the head surface (5a), and the ribbon (3) of the drawn out portion
) will be distorted.
この歪み現象は、印字ヘッド（５）がたとえば第４図で
示す向きに傾くと、リボン（３）の上下幅域にはガイド
ローラ（４）・（４ａ）の間において上縁（３ａ）側に
弛み現象（９）が生じ、下Ｂ （３ｂ）側に引っ張り現
象（１０）が生じてしまう。なお、この歪み現象は印字
ヘッド（５）の傾きか第５図で示す向きの場合は、弛み
現象（９）と引っ張り現象（１ｏ）とが上記と逆の位置
に現われる。This distortion phenomenon occurs when the print head (5) is tilted, for example, in the direction shown in FIG. A loosening phenomenon (9) occurs on the lower side B (3b), and a pulling phenomenon (10) occurs on the lower B (3b) side. This distortion phenomenon occurs when the printing head (5) is tilted in the direction shown in FIG. 5, and the slackening phenomenon (9) and the tensioning phenomenon (1o) appear in opposite positions to the above.
よって、印字ヘット（５）に沿うリボン（３）（７）ｍ
に上記現象が生じてしまうと、リボン（３）に″フリル
状の歪みが生じてしまうことがら、用紙／′ｃＪ面に圧
接する印字ヘラｌ’（５）の印字圧にバラツキが生しや
すくなってしまう。また、リボン（３）にこのような歪
みが生じてしまうということは、リボン（３）の巻き取
りに際して、ガイドローラ（４ａ）から巻き取りスプー
ル側に送られる使用済部分のリボン（３）が、ガイドロ
ーラ（４ａ）のフランジ（１１）では巻き取り方向に適
切にガイドしきれなくなってしまい、リボン（３）がピ
ン軸（６）とガイドローラ（４ａ）との間に引き込まれ
たりしてリボンの巻き取りが正常にできなくなってしま
うという問題点があった。Therefore, the ribbon (3) (7) m along the print head (5)
If the above phenomenon occurs, a frill-like distortion occurs in the ribbon (3), which tends to cause variations in the printing pressure of the printing spatula l' (5) that comes into pressure contact with the paper/'cJ surface. In addition, the occurrence of such distortion in the ribbon (3) means that when the ribbon (3) is wound, the used part of the ribbon sent from the guide roller (4a) to the take-up spool side However, the flange (11) of the guide roller (4a) cannot guide the ribbon (3) properly in the winding direction, and the ribbon (3) is drawn between the pin shaft (6) and the guide roller (4a). There was a problem in that the ribbon could not be wound normally due to the winding.
目 眞
この発明は、上記問題点に対処して、プラテン側に圧接
する印字ヘッドに傾きが生じても、そのヘッドに沿うリ
ボンに前記歪みが生じないようにガイドローラを自動的
に傾斜させるようにして、いわゆるリボンスキューの解
消がガイドローラで自動的に吸収できるようにしたこと
にある。In order to solve the above-mentioned problem, the present invention automatically tilts the guide roller so that even if the print head in pressure contact with the platen side is tilted, the ribbon along the print head will not be distorted. Therefore, the so-called ribbon skew can be eliminated by automatically absorbing it with a guide roller.
構 成
次に、この発明を図面に示す実施例に基づいて説明する
。第６図において、符号（１２）・（１２ａ）で示すの
が印字用リボン（１３）のガイドローラで、このガイド
ローラ（１２）・（１２ａ）はリボンカー１−リッジ（
１４）に対して印字部に導出されるリボン部分の面域に
配置しである。このガイドローラ（１２）・（１２ａ）
（以下単に（１２）と表記する。）は、たとえは第７図
で示すように支軸（１５）に対して緩く挿着できる軸孔
（１６）が設けてあり、支軸（１５）の長手中央位置に
は鍔状の突条（１７）が支軸（１５）と一体に設けであ
る。突条（１７）は、ガイドローラ（１２）の軸孔（１
６）と滑合できる寸法関係にあり、フランジ（１８）・
（１８）の外面、いわゆるガイドローラ（１２）の」１
下端縁（１９）はそれぞれ弧面に構成しである。よって
、支軸（１５）に取り付けるガイドローラ（１２）は、
内接の突条（１７）て回転可能に支持され、かっこのガ
イドローラ（ｊ２）は、軸孔（１６）と支軸（１５）と
のギャップ（２０）の範囲内において突条（１７）を支
点として自由に傾斜できる。Configuration Next, the present invention will be explained based on embodiments shown in the drawings. In FIG. 6, reference numerals (12) and (12a) indicate the guide rollers of the printing ribbon (13).
14), it is arranged in the surface area of the ribbon portion led out to the printing section. This guide roller (12)/(12a)
(hereinafter simply referred to as (12)) is provided with a shaft hole (16) that can be loosely inserted into the support shaft (15), as shown in Fig. 7. A flange-like protrusion (17) is provided integrally with the support shaft (15) at the longitudinal center position. The protrusion (17) is arranged in the shaft hole (1) of the guide roller (12).
6), and the dimensions are such that it can be slid together with the flange (18).
The outer surface of (18), the so-called guide roller (12) 1
The lower edges (19) each have an arcuate configuration. Therefore, the guide roller (12) attached to the support shaft (15) is
The guide roller (j2) of the bracket is rotatably supported by the inscribed protrusion (17), and the guide roller (j2) of the bracket is supported by the protrusion (17) within the range of the gap (20) between the shaft hole (16) and the support shaft (15). It can be tilted freely using the fulcrum.
上記において、支軸（１５）で支持するガイドローラ（
１２）は、たとえば第８図で示すように突条（１７）を
ガイドローラの軸孔（１６）側に設けて構成してもよい
。また、これらの突条（１７）の配置は、図示するよう
に必ずしもガイドローラ（ｊ２）の長手中央位置でなく
ても、ガイドローラ（１２）の回転と傾斜とが保てる位
置であれば上下に適宜位置ずらせて設けてもよい。In the above, the guide roller (
12) may be constructed by providing a protrusion (17) on the shaft hole (16) side of the guide roller, as shown in FIG. 8, for example. In addition, the arrangement of these protrusions (17) does not necessarily have to be at the longitudinal center position of the guide roller (j2) as shown in the figure, but may be arranged up and down as long as the rotation and inclination of the guide roller (12) can be maintained. They may be provided at appropriate positions.
第６図において、（２１）は通常の手段（たとえば従来
例に同じ。）で構成されているガイドローラ、（２２）
はリボン供給側のスプール、（２３）はリボン巻き取り
側のスプール、（２４）はリボン巻き取り用駆動ベルト
である。なお、ガイドローラ（２１）は、必要に応して
この発明による首振り可能なガイドローラとしてもよい
。In FIG. 6, (21) is a guide roller constructed by ordinary means (for example, the same as in the conventional example); (22)
2 is a spool on the ribbon supply side, 23 is a spool on the ribbon winding side, and 24 is a ribbon winding drive belt. Note that the guide roller (21) may be a swingable guide roller according to the present invention, if necessary.
第９図・第１０図はこの発明のガイドローラ（１２）の
使用状態を示し、（２５）はサーマルプリンタで用いる
印字ヘッドを示す。よって、印字ヘッド（２５）がたと
えは第４図で示す向きに傾いた場合は、ガイドローラ（
１２）・（１２ａ）が第９図で示す向きに自由に傾斜で
き、印字ヘッド（２５）に沿うリボン（１３）の上縁と
下縁とに伸びと弛みの歪みが発生するのを未然に解消す
る。同様にして、印字ヘット（２５）が第５図で示す向
きに傾いた場合は、カイトローラ（１２）・（１２ａ）
が第１０図で示す向きに自由に傾斜できて、印字ヘッド
（２５）に沿うリボン（１３）の上下各縁に及ぶ伸びと
弛みによる歪の発生を上記と同様に未然に解消すること
ができる。9 and 10 show how the guide roller (12) of the present invention is used, and (25) shows a print head used in a thermal printer. Therefore, if the print head (25) is tilted in the direction shown in FIG.
12) and (12a) can be freely tilted in the direction shown in Fig. 9 to prevent distortion due to stretching and slack from occurring at the upper and lower edges of the ribbon (13) along the print head (25). Eliminate. Similarly, if the print head (25) is tilted in the direction shown in FIG.
can be freely tilted in the direction shown in FIG. 10, and the occurrence of distortion due to elongation and slack in the upper and lower edges of the ribbon (13) along the print head (25) can be eliminated in the same manner as above. .
効 果
この発明のガイドローラは上述の如く構成しであるから
、プラテンの表面に圧接されるリボン部分が印字ヘッド
の傾きで歪む作用を受けるも、ガイドローラ自身が導出
されているリボンの不平衡なテンション分で内側に傾斜
でき、リボン自身に無理な歪が生じるのを自動的に解消
する。また、リボンの弛み分はガイドローラが外側に傾
斜する作用で吸収てきるので、上記ヘッドの印字面に位
置してリボンの弛み部分がみだりに発生することがない
。Effects Since the guide roller of the present invention is constructed as described above, even though the ribbon portion that is pressed against the surface of the platen is distorted due to the inclination of the print head, the guide roller itself is not affected by the unbalance of the ribbon from which it is guided. The ribbon can be tilted inward with a certain amount of tension, automatically eliminating unreasonable distortion of the ribbon itself. Furthermore, since the slack in the ribbon is absorbed by the outwardly tilting action of the guide roller, slack in the ribbon does not occur unnecessarily at the printing surface of the head.
よって、この発明によれば、印字八ツ１へにリボンを案
内するガイドローラは自由な傾きが得られるように構成
しであるので、印字ヘッドによるリボンスキューが的確
に防止でき、印字ヘッドによる印字圧に順応したリボン
の印字面が、きわめて安定して確保できる。また、構成
もきわめて簡単で足りるので製作や組み立てもきわめて
都合がよく、プリンタの印字品質向上に大きく貢献でき
る。Therefore, according to the present invention, the guide roller that guides the ribbon to the printing eight 1 is configured to have a free inclination, so ribbon skew caused by the print head can be accurately prevented, and printing by the print head can be prevented. The printing surface of the ribbon that adapts to the pressure can be ensured in an extremely stable manner. In addition, since the configuration is extremely simple, manufacturing and assembly are extremely convenient, and it can greatly contribute to improving the printing quality of the printer.
第１図はプラテンに対向するリボンカートリッジの説明
図、第２図は同上の要部平面図、第３図は従来例のガイ
ドローラを示す拡大断面図、第４図・第５図はプラテン
に接する印字ヘッドの傾斜と従来例のガイドローラとの
関係を示す要部の側面図、第６図はこの発明で用いるリ
ボンカー１〜リツジの一例を示す平面図、第７図はこの
発明におけるガイドローラの一実施例を示す拡大断面図
、第８図は同じくガイトローラの他側を示す同断面図、
第９図・第１０図はこの発明におけるガイドローラの作
動説明図である。
（１２）・（１２ａ）・・・・・・・・ガイドローラ特
許出願人 株式会社リ コ 一
同 リコー電子工業株式会社
代理人 弁理士 中 尾 俊 弁
箱１図
第４図
第６図
２５
″第７図
第８ 図
２
第９図
第１０図Fig. 1 is an explanatory diagram of the ribbon cartridge facing the platen, Fig. 2 is a plan view of the main parts of the same as above, Fig. 3 is an enlarged cross-sectional view showing a conventional guide roller, and Figs. 4 and 5 are for the platen. A side view of essential parts showing the relationship between the inclination of the print head and a conventional guide roller, FIG. 6 is a plan view showing an example of the ribbon car 1 to the ribbon used in the present invention, and FIG. 7 is a guide roller in the present invention. FIG. 8 is an enlarged cross-sectional view showing one embodiment of the invention, and FIG. 8 is a cross-sectional view showing the other side of the guide roller.
FIGS. 9 and 10 are explanatory views of the operation of the guide roller in this invention. (12)・(12a)・・・Guide roller patent applicant Ricoh Co., Ltd. Representative for Ricoh Electronic Industries Co., Ltd. Patent attorney Shun Nakao Valve box 1 Figure 4 Figure 6 Figure 25 ″No. Figure 7 Figure 8 Figure 2 Figure 9 Figure 10
Claims (1)
ーラが首振り自在に軸装しであることを特徴とするリボ
ンスキュー防止用ガイドローラ。1. A ribbon guide roller for use in a printer for preventing ribbon skew, characterized in that the roller is mounted on a shaft so as to be swingable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6972683A JPS59194883A (en) | 1983-04-20 | 1983-04-20 | Guide roller for preventing ribbon from skewing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6972683A JPS59194883A (en) | 1983-04-20 | 1983-04-20 | Guide roller for preventing ribbon from skewing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59194883A true JPS59194883A (en) | 1984-11-05 |
Family
ID=13411125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6972683A Pending JPS59194883A (en) | 1983-04-20 | 1983-04-20 | Guide roller for preventing ribbon from skewing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59194883A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3529750A1 (en) * | 1985-08-20 | 1987-02-26 | Regentrop & Bernard Gmbh | RIBBON CASSETTE WITH SEVERAL WRITING TRACKS |
| JPS6255183A (en) * | 1985-09-04 | 1987-03-10 | Nec Corp | Ribbon drive mechanism in thermal transfer printer |
| FR2601626A1 (en) * | 1986-07-15 | 1988-01-22 | Monarch Marking Systems Inc | PRINTER, PRINTER TAPE CASSETTE AND CASSETTE MOUNTING METHOD |
| US4728207A (en) * | 1986-08-25 | 1988-03-01 | Xerox Corporation | Ribbon cartridge with pivotable ribbon guide arms |
| US4798486A (en) * | 1985-04-26 | 1989-01-17 | Canon Kabushiki Kaisha | Ink ribbon cassette having mounting means, slack preventing means and multiple ribbon shifting means |
| US4880323A (en) * | 1987-08-04 | 1989-11-14 | Genicom Corporation | High-symbol density printer cartridge having a flexible exit arm, gear shield and support spacers |
| US5246298A (en) * | 1986-07-15 | 1993-09-21 | Monarch Marking Systems, Inc. | Ink ribbon cartridge and installation methods relating thereto |
| US5466076A (en) * | 1992-04-06 | 1995-11-14 | Alps Electric Co., Ltd. | Ink ribbon cassette for use in transfer printer |
| US5718524A (en) * | 1994-10-03 | 1998-02-17 | Ubi Printer Ab | Device in printers |
-
1983
- 1983-04-20 JP JP6972683A patent/JPS59194883A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798486A (en) * | 1985-04-26 | 1989-01-17 | Canon Kabushiki Kaisha | Ink ribbon cassette having mounting means, slack preventing means and multiple ribbon shifting means |
| DE3529750A1 (en) * | 1985-08-20 | 1987-02-26 | Regentrop & Bernard Gmbh | RIBBON CASSETTE WITH SEVERAL WRITING TRACKS |
| JPS6255183A (en) * | 1985-09-04 | 1987-03-10 | Nec Corp | Ribbon drive mechanism in thermal transfer printer |
| JPS6328679A (en) * | 1986-07-15 | 1988-02-06 | モナ−ク マ−キング システムズ インコ−ポレ−テツド | Ink ribbon-cartridge, fixture thereof and mounting method thereof |
| US4776714A (en) * | 1986-07-15 | 1988-10-11 | Monarch Marking Systems, Inc. | Ink ribbon cassette with movable guide rolls |
| FR2601626A1 (en) * | 1986-07-15 | 1988-01-22 | Monarch Marking Systems Inc | PRINTER, PRINTER TAPE CASSETTE AND CASSETTE MOUNTING METHOD |
| JPH0457199B2 (en) * | 1986-07-15 | 1992-09-10 | Monaaku Maakingu Shisutemuzu Inc | |
| US5246298A (en) * | 1986-07-15 | 1993-09-21 | Monarch Marking Systems, Inc. | Ink ribbon cartridge and installation methods relating thereto |
| US5443319A (en) * | 1986-07-15 | 1995-08-22 | Monarch Marking Systems, Inc. | Ink ribbon cartridge installation and methods relating thereto |
| US4728207A (en) * | 1986-08-25 | 1988-03-01 | Xerox Corporation | Ribbon cartridge with pivotable ribbon guide arms |
| US4880323A (en) * | 1987-08-04 | 1989-11-14 | Genicom Corporation | High-symbol density printer cartridge having a flexible exit arm, gear shield and support spacers |
| US5466076A (en) * | 1992-04-06 | 1995-11-14 | Alps Electric Co., Ltd. | Ink ribbon cassette for use in transfer printer |
| US5718524A (en) * | 1994-10-03 | 1998-02-17 | Ubi Printer Ab | Device in printers |
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