JPH0476439U - - Google Patents
Info
- Publication number
- JPH0476439U JPH0476439U JP11991590U JP11991590U JPH0476439U JP H0476439 U JPH0476439 U JP H0476439U JP 11991590 U JP11991590 U JP 11991590U JP 11991590 U JP11991590 U JP 11991590U JP H0476439 U JPH0476439 U JP H0476439U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- head
- guide shaft
- swinging
- printing
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Impact Printers (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
Description
第１図は本考案の実施例を示す図。第２図は第
１図の実施例に使用されている揺動カムの外周に
設けられているカム溝の特性を示す図。第３図は
第１図に示す実施例の場合の揺動カムの回転速度
変化を示す図。第４図は本実施例に示す復帰補助
バネのみを設けた場合の揺動カムの回転速度の変
化を示す図。第５図は従来のヘツド送り機構の例
を示す図。第６図は従来例における揺動カムの回
転速度変動を示す図。
１……印字ヘツド、２……印字ピン、３……軸
受けａ、４……軸受けｂ、５……揺動カム、６…
…揺動ピン、７……揺動カム位置決め部、８……
揺動カム軸、９……揺動カムバネ度当り板、１０
……揺動カム歯車、１１……復帰補助バネ、１２
……ダンパバネ、１３……揺動カムバネ、１４…
…本体フレーム、１５……揺動カムブツシユ、１
６……ガイド軸、１７……プラテン、１８……イ
ンクリボン、１９……ロール紙２０……減速歯車
、２１……モータ歯車、２２……モータ、２３…
…タコジエネレータ。
FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing the characteristics of the cam groove provided on the outer periphery of the swing cam used in the embodiment of FIG. 1. FIG. 3 is a diagram showing changes in the rotational speed of the swing cam in the embodiment shown in FIG. 1. FIG. 4 is a diagram showing changes in the rotational speed of the swing cam when only the return assisting spring shown in this embodiment is provided. FIG. 5 is a diagram showing an example of a conventional head feeding mechanism. FIG. 6 is a diagram showing rotational speed fluctuations of a swing cam in a conventional example. 1... Printing head, 2... Printing pin, 3... Bearing a, 4... Bearing b, 5... Rocking cam, 6...
... Swing pin, 7... Swing cam positioning section, 8...
Swinging cam shaft, 9... Swinging cam spring contact plate, 10
...Swinging cam gear, 11...Return auxiliary spring, 12
... Damper spring, 13 ... Swing cam spring, 14 ...
...Body frame, 15...Swing cam bush, 1
6... Guide shaft, 17... Platen, 18... Ink ribbon, 19... Roll paper 20... Reduction gear, 21... Motor gear, 22... Motor, 23...
...Tachodi generator.
Claims (1)
印字ヘツドと、該印字ヘツドの往復運動をガイド
するガイド軸と、前記印字ヘツドに固着された揺
動カム係合部と、該揺動カム係合部に係合し前記
印字ヘツドを往復運動させるカム溝を有する揺動
カムから構成されるプリンタのヘツド送り機構に
おいて、前記ガイド軸上の前記印字ヘツドの両側
と前記ガイド軸を支持するフレームの間にそれぞ
れ弾性部材を設け、更に、前記揺動カムを一方向
に押圧する弾性部材を前記揺動カムを駆動する軸
上に設けたことを特徴とするプリンタのヘツド送
り機構。 A printing head that performs predetermined printing while reciprocating in the paper width direction, a guide shaft that guides the reciprocating movement of the printing head, a swinging cam engagement portion fixed to the printing head, and the swinging cam engagement. In a printer head feeding mechanism consisting of a swinging cam having a cam groove that engages with the cam groove and reciprocates the print head, there is a space between both sides of the print head on the guide shaft and a frame that supports the guide shaft. A head feeding mechanism for a printer, characterized in that an elastic member is provided on each of the cams, and an elastic member that presses the oscillating cam in one direction is provided on a shaft that drives the oscillating cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11991590U JPH079638Y2 (en) | 1990-11-16 | 1990-11-16 | Printer head feed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11991590U JPH079638Y2 (en) | 1990-11-16 | 1990-11-16 | Printer head feed mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476439U true JPH0476439U (en) | 1992-07-03 |
| JPH079638Y2 JPH079638Y2 (en) | 1995-03-08 |
Family
ID=31867845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11991590U Expired - Lifetime JPH079638Y2 (en) | 1990-11-16 | 1990-11-16 | Printer head feed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079638Y2 (en) |
-
1990
- 1990-11-16 JP JP11991590U patent/JPH079638Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079638Y2 (en) | 1995-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |