JP3518641B2 - Ink ribbon drive mechanism - Google Patents
Ink ribbon drive mechanismInfo
- Publication number
- JP3518641B2 JP3518641B2 JP20584095A JP20584095A JP3518641B2 JP 3518641 B2 JP3518641 B2 JP 3518641B2 JP 20584095 A JP20584095 A JP 20584095A JP 20584095 A JP20584095 A JP 20584095A JP 3518641 B2 JP3518641 B2 JP 3518641B2
- Authority
- JP
- Japan
- Prior art keywords
- ink ribbon
- roller
- rollers
- driving mechanism
- drive
- 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 - Lifetime
Links
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、インクリボンカセット
のインクリボン駆動機構に関するものである。
【０００２】
【従来の技術】従来のインクリボン駆動機構では、２個
の駆動ローラの位置関係を各々のローラの支持部の精度
及び剛性のみによって決定していた。
【０００３】このようなインクリボン駆動機構を図３及
び図４に示す。
【０００４】図において、駆動ローラ２１及び駆動ロー
ラ２２は夫々ローラホルダ２３、ローラホルダ２４に支
持されていて、前記２個の駆動ローラが所定の接触面積
を有するような位置関係とすることにより、所定のイン
クリボン駆動力を発生させている。
【０００５】前記駆動ローラ２１及び２２の位置関係を
決定しているのは、ローラホルダ２３及びローラホルダ
２４の支持部の精度及び剛性のみである。
【０００６】
【発明が解決しようとする課題】従来の技術では、イン
クリボンに加わる負荷が大きいラインプリンタに採用し
た場合、駆動ローラ２１及び２２に加わるインクリボン
の張力にローラホルダ２３、２４の剛性が耐えらない。
【０００７】すなわち、図５に示すように、駆動源を有
する駆動ローラ３１の回転軸に対して駆動ローラ３２の
回転軸が傾斜し、２個のローラの回転方向が同一平面内
でなくなる。
【０００８】これにより、図６に示すように駆動ローラ
３２は上方へ、駆動ローラ３１は下方へと位置関係がず
れ、２個の駆動ローラ間の所定の接触面積が得られなく
なり、インクリボン駆動力不足に伴う走行異常が発生す
るという問題点があった。
【０００９】また、前記インクリボンの張力に対してロ
ーラ支持部の剛性向上を図って対処した場合も、ローラ
支持部の寿命が短い、コストが高いという問題点があ
る。
【００１０】本発明は、以上のような問題点を解決し、
低コストで信頼性の高いインクリボン駆動機構を提供す
るものである。
【００１１】
【課題を解決するための手段】本発明は、前記課題を解
決するために為されたもので、インクリボンカセット収
納部に設けられ、エンドレスインクリボンを前記収納部
に送込む一対のインクリボン巻き取りローラと、夫々の
インクリボン巻取りローラを回転可能に支持するローラ
ホルダを有するインクリボン駆動機構において、前記一
対のインクリボン巻取りローラの各々の端部に各々のイ
ンクリボン巻取りローラの上下方向の位置関係を維持す
るための手段として前記一対のインクリボン巻取りロー
ラの各々の端部に円板状のつばを設け、夫々のつばが互
いに噛合うようにしたことを特徴とする。
【００１２】
【００１３】上記のように２個の駆動ローラが互いにず
れないようにすることで、低コストで確実に、所定の接
触面積を維持し、所定のインクリボン駆動力を発生させ
ることができる。
【００１４】
【実施例】図７はインクリボンを用いた印字装置のリボ
ン走行系を示したものであるが、インクリボン４１は一
対の駆動ローラ４２により、リボン収納ケース４３に引
き込まれる構成となっている。
【００１５】図１及び図２は本発明のインクリボン駆動
機構を示したものである。
【００１６】駆動ローラ１の回転軸はローラホルダ３に
設けられた軸受に支持され、同様に駆動ローラ２の回転
軸はローラホルダ４に設けられた軸受に支持されてお
り、これらのローラの回転軸が平行になるように、且
つ、２個の駆動ローラ間に所定の接触面積を有するよう
に配置されている。
【００１７】駆動ローラ１と駆動ローラ２との位置関係
が互いに上下方向にずれないようにするため、駆動ロー
ラ１に設けた円板状のつば５を、駆動ローラ２に設けた
円板状のつば６と歯車７との間に噛み合わせるように配
置している。
【００１８】
【発明の効果】本発明によれば、印刷装置のインクリボ
ン駆動機構において、駆動ローラ支持部の精度、剛性に
頼ることなく２個の駆動ローラが互いに上下方向へずれ
ないようにする事で、低コストで確実に、所定の接触面
積を維持し、所定のインクリボン駆動力を発生させるこ
とができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink ribbon driving mechanism for an ink ribbon cassette. 2. Description of the Related Art In a conventional ink ribbon driving mechanism, the positional relationship between two driving rollers is determined only by the accuracy and rigidity of a supporting portion of each roller. FIG. 3 and FIG. 4 show such an ink ribbon driving mechanism. In FIG. 1, a driving roller 21 and a driving roller 22 are supported by a roller holder 23 and a roller holder 24, respectively, so that the two driving rollers have a positional relationship such that they have a predetermined contact area. A predetermined ink ribbon driving force is generated. The positional relationship between the drive rollers 21 and 22 is determined only by the accuracy and rigidity of the support portions of the roller holders 23 and 24. According to the prior art, when a line printer having a large load applied to the ink ribbon is employed, the rigidity of the roller holders 23 and 24 is reduced by the tension of the ink ribbon applied to the driving rollers 21 and 22. Can not stand. That is, as shown in FIG. 5, the rotation axis of the drive roller 32 is inclined with respect to the rotation axis of the drive roller 31 having a drive source, and the rotation directions of the two rollers are not in the same plane. As a result, as shown in FIG. 6, the drive roller 32 is displaced upward and the drive roller 31 is displaced downward, and a predetermined contact area between the two drive rollers cannot be obtained. There is a problem that a running abnormality due to insufficient power occurs. Further, when the tension of the ink ribbon is dealt with by increasing the rigidity of the roller support, there is a problem that the life of the roller support is short and the cost is high. The present invention solves the above problems,
An object of the present invention is to provide a low cost and highly reliable ink ribbon driving mechanism. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is provided with a pair of inks which are provided in an ink ribbon cassette storage section and feed an endless ink ribbon into the storage section. In an ink ribbon driving mechanism having a ribbon take-up roller and a roller holder rotatably supporting the respective ink ribbon take-up rollers, each ink ribbon take-up roller is provided at each end of the pair of ink ribbon take-up rollers. A disc-shaped collar is provided at each end of the pair of ink ribbon take-up rollers as means for maintaining the vertical positional relationship of the pair of ink ribbon winding rollers, and the respective collars are engaged with each other. . As described above, by keeping the two drive rollers from shifting from each other, it is possible to reliably maintain a predetermined contact area at low cost and generate a predetermined ink ribbon driving force. it can. FIG. 7 shows a ribbon traveling system of a printing apparatus using an ink ribbon. The ink ribbon 41 is drawn into a ribbon storage case 43 by a pair of drive rollers 42. ing. FIGS. 1 and 2 show an ink ribbon driving mechanism according to the present invention. The rotating shaft of the driving roller 1 is supported by bearings provided on a roller holder 3, and similarly, the rotating shaft of the driving roller 2 is supported by bearings provided on a roller holder 4. They are arranged so that their axes are parallel and that they have a predetermined contact area between the two drive rollers. In order to prevent the positional relationship between the drive roller 1 and the drive roller 2 from shifting in the vertical direction, the disk-shaped collar 5 provided on the drive roller 1 is replaced with the disk-shaped collar provided on the drive roller 2. It is arranged so as to mesh between the collar 6 and the gear 7. According to the present invention, in the ink ribbon driving mechanism of the printing apparatus, the two driving rollers are prevented from shifting from each other in the vertical direction without depending on the accuracy and rigidity of the driving roller supporting portion. As a result, a predetermined contact area can be reliably maintained at a low cost, and a predetermined ink ribbon driving force can be generated.
【図面の簡単な説明】
【図１】 インクリボン駆動機構一実施例を示す斜視図
である。
【図２】 図１の側面図である。
【図３】 従来のインクリボン駆動機構を示す斜視図で
ある。
【図４】 図３の側面図である。
【図５】 インクリボン駆動機構の問題点を示す模式図
である。
【図６】 インクリボン駆動機構の問題点を示す模式図
である。
【図７】 インクリボン走行系を示す斜視図である。
【符号の説明】
１は駆動ローラ（従動側）、２は駆動ローラ（駆動
側）、３、４はローラホルダ、５、６はずれ防止用つ
ば、７は歯車である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an ink ribbon driving mechanism. FIG. 2 is a side view of FIG. FIG. 3 is a perspective view showing a conventional ink ribbon driving mechanism. FIG. 4 is a side view of FIG. 3; FIG. 5 is a schematic view showing a problem of the ink ribbon driving mechanism. FIG. 6 is a schematic diagram showing a problem of the ink ribbon driving mechanism. FIG. 7 is a perspective view showing an ink ribbon traveling system. DESCRIPTION OF REFERENCE NUMERALS 1 is a drive roller (driven side), 2 is a drive roller (drive side), 3 and 4 are roller holders, 5 and 6 are slip prevention collars, and 7 is a gear.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中原 慎吾 茨城県ひたちなか市武田1060番地 日立 工機株式会社内 (72)発明者 谷下田 幸一 茨城県ひたちなか市武田1060番地 日立 工機株式会社内 (72)発明者 小林 浩宜 茨城県ひたちなか市武田1060番地 日立 工機株式会社内 (56)参考文献 特開 昭57−156291（ＪＰ，Ａ) 実開 昭63−51757（ＪＰ，Ｕ) 実開 昭53−101811（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B41J 33/26 B41J 32/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shingo Nakahara 1060 Takeda, Hitachinaka City, Ibaraki Prefecture Within Hitachi Koki Co., Ltd. (72) Inventor Koichi Tanoshida 1060 Takeda, Hitachinaka City, Ibaraki Prefecture Within Hitachi Koki Co., Ltd. (72 ) Inventor Hironori Kobayashi 1060 Takeda, Hitachinaka-city, Ibaraki Pref. Inside Hitachi Koki Co., Ltd. (56) References JP-A-57-156291 (JP, A) JP-A 63-51757 (JP, U) JP-A 53 -101811 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B41J 33/26 B41J 32/02
Claims (1)
れ、エンドレスインクリボンを前記収納部に送り込む一
対のインクリボン巻き取りローラと、夫々のインクリボ
ン巻取りローラを回転可能に支持するローラホルダを有
するインクリボン駆動機構において、前記各々のインク
リボン巻取りローラの上下方向の位置関係を維持するた
めの手段として前記一対のインクリボン巻取りローラの
各々の端部に円板状のつばを設け、夫々のつばが互いに
噛合うようにしたことを特徴とするインクリボン駆動機
構。(57) [Claims 1] A pair of ink ribbon take-up rollers provided in a storage section of an ink ribbon cassette for feeding an endless ink ribbon into the storage section, and rotating each of the ink ribbon take-up rollers. In an ink ribbon driving mechanism having a roller holder that supports the ink ribbon take-up roller, a circle is formed at each end of the pair of ink ribbon take-up rollers as a means for maintaining a vertical positional relationship between the respective ink ribbon take-up rollers. An ink ribbon driving mechanism, wherein a plate-shaped brim is provided, and each brim is meshed with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20584095A JP3518641B2 (en) | 1995-08-11 | 1995-08-11 | Ink ribbon drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20584095A JP3518641B2 (en) | 1995-08-11 | 1995-08-11 | Ink ribbon drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0952413A JPH0952413A (en) | 1997-02-25 |
| JP3518641B2 true JP3518641B2 (en) | 2004-04-12 |
Family
ID=16513591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20584095A Expired - Lifetime JP3518641B2 (en) | 1995-08-11 | 1995-08-11 | Ink ribbon drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3518641B2 (en) |
-
1995
- 1995-08-11 JP JP20584095A patent/JP3518641B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0952413A (en) | 1997-02-25 |
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