JPH038642A - Paper feed mechanism - Google Patents
Paper feed mechanismInfo
- Publication number
- JPH038642A JPH038642A JP14359089A JP14359089A JPH038642A JP H038642 A JPH038642 A JP H038642A JP 14359089 A JP14359089 A JP 14359089A JP 14359089 A JP14359089 A JP 14359089A JP H038642 A JPH038642 A JP H038642A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- pressure roller
- feed roller
- roller
- paper feed
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は印字装置などの用紙送り機構の構造に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of a paper feeding mechanism such as a printing device.
従来この種の印字装置などの用紙送り機構は用紙送りロ
ーラとプレッシャローラとを対向させ、用紙送り時には
用紙送りローラのみ駆動させ、プレッシャローラは用紙
を押しつけているだけかあるいは前記両ローラを互いに
別々に駆動させて用紙を送っているものであった。Conventionally, the paper feed mechanism of this type of printing device has a paper feed roller and a pressure roller facing each other, and when paper is fed, only the paper feed roller is driven, and the pressure roller only presses the paper, or both rollers are driven separately from each other. It was sending papers.
これらの方式によると、複写用紙などの場合前記両ロー
ラの表面周速度の違いにより、用紙間のズレが生じやす
く、用紙のシワよりあるいは印字ズレなどの困難が生じ
る欠点があった。According to these methods, in the case of copying paper, etc., the difference in surface circumferential speed of the two rollers tends to cause misalignment between the sheets, resulting in problems such as wrinkles on the paper or misalignment of printing.
本発明においては、数個の伝達部材の組み合わせにより
、用紙送りローラとプレッシャローラの表面周速度を同
一にすることにより、複写用紙などの容易な送りを可能
にし、印字装置精度などを向上させている。In the present invention, by combining several transmission members to make the surface peripheral speed of the paper feed roller and pressure roller the same, it is possible to easily feed copy paper, etc., and the accuracy of the printing device is improved. .
すなわち、本発明の用紙送り機構は、用紙送りローラと
、それに対向して退避自在に設けられ前記用紙送りロー
ラと径が等しいプレッシャローラと、前記用紙送りロー
ラの回転を同一の回転速度で回転の方向を逆にする一対
の伝達部材と、さらにその回転と同位相の回転をプレッ
シャローラに伝達する両端移動自在なジヨイントとを具
備している。That is, the paper feed mechanism of the present invention includes a paper feed roller, a pressure roller that is retractably provided opposite to the paper feed roller and has the same diameter as the paper feed roller, and a pressure roller that rotates the paper feed roller at the same rotational speed but in the opposite direction. The pressure roller includes a pair of transmission members, and a joint movable at both ends that transmits rotation in the same phase as the rotation to the pressure roller.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例の側断面図、第２図はその平
面図である。FIG. 1 is a side sectional view of an embodiment of the present invention, and FIG. 2 is a plan view thereof.
フィードローラｌは駆動モータ３にモータプーリ４．タ
イミングベルト５及びフィードローラプーリ６を介して
連結されている。このフィードローラ１にはギヤＡ７が
直結されており、ギヤＡ７はギヤＢ８に連結され、さら
にジヨイント９を介してプレッシャローラ２に連結され
ている。The feed roller l is connected to a drive motor 3 and a motor pulley 4. They are connected via a timing belt 5 and a feed roller pulley 6. A gear A7 is directly connected to the feed roller 1, and the gear A7 is connected to a gear B8, and further connected to the pressure roller 2 via a joint 9.
フィードローラ１とプレッシャローラ２の径は等しく、
またギヤＡ７とギヤＢ８の形状は等しい為、駆動モータ
３を駆動させるとフィードローラ１とプレッシャローラ
２は互いに回転方向が逆で表面周速度が等しく回転する
。用紙１２を送る際、プレッシャローラ２はブラケット
Ａ１０．ブラケッ）Ｂｌｌに支えられてフィードローラ
１に押しつけられる。この場合ギヤＢ８の中心軸とプレ
ッシャローラ２の中心軸とが一致しない為ジヨイント９
を使用する。The diameters of feed roller 1 and pressure roller 2 are equal,
Further, since the gears A7 and B8 have the same shape, when the drive motor 3 is driven, the feed roller 1 and the pressure roller 2 rotate in opposite directions and at the same surface circumferential speed. When feeding the paper 12, the pressure roller 2 is moved by the bracket A10. The bracket) is supported by Bll and pressed against the feed roller 1. In this case, the center axis of gear B8 and the center axis of pressure roller 2 do not match, so joint 9
use.
すなわちフィードローラ１とプレッシャローラ２により
、用紙１２は両側から送られることになりしかも表面周
速度が等しい為に、用紙間ズレなくスムーズに送られる
ことが出来る。That is, the paper 12 is fed from both sides by the feed roller 1 and the pressure roller 2, and since the surface circumferential speeds are equal, the paper can be fed smoothly without any deviation between the sheets.
本発明は以上説明したように、数個の伝達部材の組み合
わせによりフィードローラとプレッシャローラの表面周
速度を同一にし、複写用紙などの容易な送りを可能にし
て、印字位置精度などを向上できるという効果がある。As explained above, the present invention makes it possible to make the surface circumferential speeds of the feed roller and pressure roller the same by combining several transmission members, to enable easy feeding of copy paper, etc., and to improve printing position accuracy. effective.
第１図は本発明の一実施例による用紙送り機構の側断面
図、第２図は本実施例の平面図である。
１・・・・・・フィードローラ、２・・・・・・プレッ
シャローラ、３・・・・・・駆動モータ、４・・・・・
・モータプーリ、５・・・・・・タイミングベルト、６
・・・・・・フィードローラプーリ、７・・・・・・ギ
ヤＡ、８・・・・・・ギヤＢ、９・・・・、。
ジヨイント、１０・・・・・・ブラケットＡ、１１・・
・・・・ブラケットＢ１１２・・・・・・用紙。
／２FIG. 1 is a sectional side view of a paper feeding mechanism according to an embodiment of the present invention, and FIG. 2 is a plan view of the embodiment. 1... Feed roller, 2... Pressure roller, 3... Drive motor, 4...
・Motor pulley, 5... Timing belt, 6
...Feed roller pulley, 7...Gear A, 8...Gear B, 9... Joint, 10... Bracket A, 11...
...Bracket B112...Paper. /2
Claims (1)
れ前記用紙送りローラと径が等しいプレッシャローラと
、前記用紙送りローラの回転を同一の回転速度で回転の
方向を逆にする一対の伝達部材と、その回転と同位相の
回転をプレッシャローラに伝達する両端移動自在なジョ
イントとを具備してなることを特徴とする用紙送り機構
。A paper feed roller, a pressure roller that is retractably provided opposite the paper feed roller and has the same diameter as the paper feed roller, a pair of transmission members that rotate the paper feed roller at the same rotational speed and in opposite directions, and the rotation thereof. and a joint movable at both ends that transmits rotation in the same phase as the pressure roller to the pressure roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14359089A JPH038642A (en) | 1989-06-05 | 1989-06-05 | Paper feed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14359089A JPH038642A (en) | 1989-06-05 | 1989-06-05 | Paper feed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH038642A true JPH038642A (en) | 1991-01-16 |
Family
ID=15342268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14359089A Pending JPH038642A (en) | 1989-06-05 | 1989-06-05 | Paper feed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038642A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005255284A (en) * | 2004-03-09 | 2005-09-22 | Seiko Epson Corp | Recording device |
-
1989
- 1989-06-05 JP JP14359089A patent/JPH038642A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005255284A (en) * | 2004-03-09 | 2005-09-22 | Seiko Epson Corp | Recording device |
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