JPH09300752A - Paper feed mechanism - Google Patents

Paper feed mechanism

Info

Publication number
JPH09300752A
JPH09300752A JP11639796A JP11639796A JPH09300752A JP H09300752 A JPH09300752 A JP H09300752A JP 11639796 A JP11639796 A JP 11639796A JP 11639796 A JP11639796 A JP 11639796A JP H09300752 A JPH09300752 A JP H09300752A
Authority
JP
Japan
Prior art keywords
paper
carrying
impeller
roll
sheet
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
JP11639796A
Other languages
Japanese (ja)
Inventor
Yutaka Shoji
裕 庄司
Shigenori Suematsu
成規 末松
Hiroshi Takahagi
浩 高萩
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.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
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 Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP11639796A priority Critical patent/JPH09300752A/en
Publication of JPH09300752A publication Critical patent/JPH09300752A/en
Pending legal-status Critical Current

Links

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  • Handling Of Sheets (AREA)
  • Handling Of Cut Paper (AREA)

Abstract

PROBLEM TO BE SOLVED: To feed paper, in the paper feed mechanism of a recording apparatus, by providing the pressure difference of air between the paper guide of a paper feed route and paper without providing an exclusive fan motor. SOLUTION: An impeller 6 is engaged with a case 7 so as to be rotated in matching relation to a feed roll 1 and one end of a pipe 8 becoming an air passage is fixed to the hole 7a of the case 7 and the other end thereof is connected to the open hole 9a provided to a paper guide 9. By this constitution, when the impeller 6 is rotated by the rotation of the feed roll 1, negative or positive pressure can be generated between the open hole 9a of the paper guide 9 and paper.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は記録装置における用
紙搬送機構に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying mechanism in a recording device.

【0002】[0002]

【従来の技術】用紙搬送経路に発生させた空気の圧力差
を利用して用紙を搬送する用紙搬送機構においては、そ
の空気の圧力差を得るために専用のファンモータ等を設
けるものが知られている。
2. Description of the Related Art It is known that a sheet conveying mechanism that conveys a sheet by utilizing a pressure difference of air generated in a sheet conveying path is provided with a dedicated fan motor or the like to obtain the pressure difference of the air. ing.

【0003】[0003]

【発明が解決しようとする課題】従来の用紙搬送経路に
発生させた空気の圧力差を利用して用紙を搬送する用紙
搬送機構は、その空気の圧力差を得るために専用のファ
ンモータ等を設けるためコスト高になる、また、省電力
化の面でも劣るという問題があった。
A conventional paper transport mechanism for transporting paper by utilizing the pressure difference of air generated in the paper transport path has a dedicated fan motor or the like to obtain the pressure difference of air. Since it is provided, there is a problem that the cost becomes high and the power saving is inferior.

【0004】本発明は、上記した欠点をなくし低コスト
で省電力の用紙搬送機構を提供することを課題とする。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a low-cost and power-saving paper transport mechanism that eliminates the above-mentioned drawbacks.

【0005】[0005]

【課題を解決するための手段】上記課題を解決するため
に、本発明においては、用紙を搬送する搬送ロールと、
その搬送ロールを駆動するモータと、その搬送ロールに
合わせて回動するよう設けられた羽根車と、その羽根車
の回動軸方向に設けられ空気の流路となるパイプと、そ
のパイプを連結し用紙搬送のための開放孔を有した用紙
ガイドを設けた。
In order to solve the above-mentioned problems, in the present invention, a conveyance roll for conveying a sheet,
A motor that drives the transport roll, an impeller that is rotated to match the transport roll, a pipe that is provided in the rotation axis direction of the impeller and serves as an air flow path, and the pipe is connected. A paper guide having an open hole for paper transportation is provided.

【0006】上記のように構成された搬送ロールがモー
タにより回転すると、羽根車が回転し、パイプを通じて
その先に連結された用紙ガイドの開放孔に空気の圧力差
が生じるように働く。また、この圧力差は羽根車の取付
方向により負圧、または正圧と切り替えることができ
る。
When the transport roll configured as described above is rotated by the motor, the impeller is rotated, and a pressure difference of air is generated in the open hole of the paper guide connected to the tip of the transport roll through the pipe. Further, this pressure difference can be switched between negative pressure and positive pressure depending on the mounting direction of the impeller.

【0007】また、別の手段として、パイプと用紙ガイ
ドをなくし、搬送ロールを外周に複数の開放孔を有した
中空とし、羽根車を直接搬送ロールの端部に取付け、搬
送ロールの回転によりその搬送ロール内を負圧にするよ
うにした。この場合、搬送ロールで直接用紙を吸引して
搬送することが可能であるため、搬送ロール外径が大き
く搬送ロールに用紙を巻き付けて搬送する場合等には単
純な構成となる。
As another means, the pipe and the paper guide are eliminated, the carrier roll is made hollow with a plurality of open holes on the outer circumference, and the impeller is directly attached to the end of the carrier roll, and the carrier roll is rotated to rotate it. A negative pressure was applied to the inside of the transfer roll. In this case, since it is possible to directly suck and convey the sheet by the conveying roll, the configuration is simple when the sheet is wound around the conveying roll and has a large outer diameter.

【0008】[0008]

【発明の実施の形態】以下、本発明を図面に基づいて説
明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

【0009】図1は、本発明の一例を示す用紙搬送機構
の斜視図で、図2はその羽根車部を拡大した縦断面図で
ある。
FIG. 1 is a perspective view of a sheet conveying mechanism showing an example of the present invention, and FIG. 2 is an enlarged vertical sectional view of an impeller portion thereof.

【0010】1は搬送ロールで、その軸1aにはモータ
2が連結されている。搬送ロール1に対向した位置には
用紙3を介在して従動のロール4が配置され、バネ5に
より用紙3方向に押し付けられている。6は羽根車で、
軸6aを中心に回転可能にケース7に係止されている。
また、ケース7にはその内部にある羽根車6の回転軸方
向両側に穴7a、7bが開けられている。この穴7aに
は空気の流路となるパイプ8の一端が固定されている。
パイプ8の他端は、用紙ガイド9に設けられた3つの開
放孔9aに連結されている。一方、10はベルトで搬送
ロール1の軸1bと羽根車6の軸6aに張架されてお
り、搬送ロール1が回転すればベルト10を介して羽根
車6も回転する構成となっている。11は用紙3にイン
クを噴射するプリントヘッドで、用紙3と約1ミリメー
トルの距離をおいて配置されている。
A transport roll 1 has a shaft 1a to which a motor 2 is connected. A driven roll 4 is arranged at a position facing the transport roll 1 with the paper 3 interposed therebetween, and is pressed in the direction of the paper 3 by a spring 5. 6 is an impeller,
It is locked to the case 7 so as to be rotatable around the shaft 6a.
Further, the case 7 is provided with holes 7a and 7b on both sides in the rotation axis direction of the impeller 6 inside thereof. One end of a pipe 8 serving as an air flow path is fixed to the hole 7a.
The other end of the pipe 8 is connected to three open holes 9 a provided in the paper guide 9. On the other hand, 10 is a belt stretched around the shaft 1b of the transport roll 1 and the shaft 6a of the impeller 6, and when the transport roll 1 rotates, the impeller 6 also rotates via the belt 10. Reference numeral 11 denotes a print head which ejects ink onto the sheet 3 and is arranged at a distance of about 1 mm from the sheet 3.

【0011】次に動作を説明する。Next, the operation will be described.

【0012】モータ2を駆動すると搬送ロール1が回転
し、従動のロール4に挟まれた用紙3は用紙ガイド9上
を矢印A方向に搬送される。一方、前記したように搬送
ロール1の回転に合わせて羽根車6も回転する。羽根車
6の回転によりケース7には矢印B方向の空気の流れが
発生するように、羽根車6の羽根の向きを設定してあ
る。羽根車6に発生した空気の流れは、ケース7の穴7
bから大気に放たれる。従って、パイプ8内には矢印C
方向の空気の流れが発生し、更にはパイプ8の先端の用
紙ガイド9に設けられた開放孔9aにも同方向の空気の
流れが発生する。その場合、用紙ガイド9の開放孔9a
と用紙3との間には負圧が発生する。つまり、搬送ロー
ル1が回転し続けることにより、用紙ガイド9上の用紙
3は開放孔9aに吸引され続けるため、用紙ガイド9か
ら浮き上がることなく密着した状態を保つことが可能で
ある。従って、用紙3とプリントヘッド11との距離を
常に一定に保て、プリントヘッド11から用紙3に噴射
されるインクの飛翔時間が一定となるため、安定した印
刷品質を得ることが可能となる。
When the motor 2 is driven, the transport roll 1 rotates, and the paper 3 sandwiched by the driven roll 4 is transported on the paper guide 9 in the direction of arrow A. On the other hand, as described above, the impeller 6 also rotates in accordance with the rotation of the transport roll 1. The direction of the blades of the impeller 6 is set so that the rotation of the impeller 6 causes an air flow in the direction of arrow B in the case 7. The air flow generated in the impeller 6 is generated by the holes 7 in the case 7.
It is released into the atmosphere from b. Therefore, the arrow C is shown in the pipe 8.
A flow of air in the same direction is generated, and further, a flow of air in the same direction is also generated in the open hole 9a provided in the paper guide 9 at the tip of the pipe 8. In that case, the opening hole 9a of the paper guide 9
A negative pressure is generated between the sheet and the sheet 3. That is, as the transport roll 1 continues to rotate, the sheet 3 on the sheet guide 9 continues to be sucked into the open hole 9a, so that the sheet 3 can be kept in close contact with the sheet guide 9 without floating. Therefore, the distance between the paper 3 and the print head 11 is always kept constant, and the flight time of the ink ejected from the print head 11 onto the paper 3 is constant, so that stable print quality can be obtained.

【0013】また、羽根車6の羽根の向きを上記説明と
は逆向きにすることにより、用紙ガイド9の開放孔9a
と用紙3との間の空気を正圧にすることが可能である。
この場合、搬送ロール1が回転し続けることにより、用
紙ガイド9と用紙3間には薄い空気の加圧層が発生する
ため、用紙ガイド9から用紙3がわずかに浮き上がって
搬送されることになる。この使い方は、例えば、用紙3
の用紙ガイド9側の面に印刷済みのインク面がある場
合、印刷面が用紙ガイド9に擦ることがないため、好都
合である。
Further, by opening the blades of the impeller 6 in the opposite direction to the above description, the open hole 9a of the paper guide 9 is formed.
It is possible to make the air between the sheet and the sheet 3 a positive pressure.
In this case, as the transport roll 1 continues to rotate, a thin air pressure layer is generated between the paper guide 9 and the paper 3, so that the paper 3 is slightly lifted from the paper guide 9 and transported. . This usage is for example paper 3
If there is a printed ink surface on the surface of the paper guide 9 side, it is convenient because the printed surface does not rub against the paper guide 9.

【0014】図3に示す実施例では搬送ロール21を外
周に複数の開放孔21cを有した中空とし、羽根車26
を直接搬送ロール21の端部21dに取り付け、図1、
2におけるパイプ8と用紙ガイド9をなくした構成とし
ている。ここで搬送ロール21の端部21dの対向面に
は開放孔がなく密封状態となっている。また、搬送ロー
ル21の軸21aにはモータ22が連結されている。羽
根車26の羽根の向きは、搬送ロール21の回転により
搬送ロール21内の空気が矢印D方向に流れるよう、つ
まり、搬送ロール21内の圧力が負圧に変化するよう設
定されている。また、図1と同様に搬送ロール21に対
向した位置には従動のロール24が配置され、用紙3を
矢印E方向に搬送する。更に、搬送ロール21の周囲に
は3つのプリントヘッド11が用紙23と約1ミリメー
トルの距離をおいて配置されている。
In the embodiment shown in FIG. 3, the carrier roll 21 is hollow with a plurality of open holes 21c on the outer circumference, and the impeller 26 is used.
Is directly attached to the end 21d of the transport roll 21, and
2, the pipe 8 and the paper guide 9 are eliminated. Here, there is no open hole in the facing surface of the end portion 21d of the transport roll 21 and it is in a sealed state. A motor 22 is connected to the shaft 21 a of the transport roll 21. The direction of the blades of the impeller 26 is set so that the rotation of the transport roll 21 causes the air in the transport roll 21 to flow in the direction of the arrow D, that is, the pressure in the transport roll 21 changes to a negative pressure. Further, similarly to FIG. 1, a driven roll 24 is arranged at a position facing the transport roll 21 and transports the sheet 3 in the arrow E direction. Further, three print heads 11 are arranged around the transport roll 21 at a distance of about 1 mm from the paper 23.

【0015】この場合、搬送ロール21の回転により、
用紙23を搬送ロール21から浮き上がることなく密着
した状態で搬送することが可能である。従って、図1と
同様に安定した印刷品質を得ることが可能となる。しか
も、部品点数が減り大幅なコストダウンが可能となる。
In this case, the rotation of the transport roll 21 causes
It is possible to convey the sheet 23 in a state in which the sheet 23 is in close contact with the sheet and does not float up from the sheet conveying roll 21. Therefore, it is possible to obtain stable print quality as in FIG. Moreover, the number of parts is reduced, and the cost can be significantly reduced.

【0016】[0016]

【発明の効果】以上説明したように本発明によれば、フ
ァンモータ等を使用せずに、用紙搬送経路に空気の圧力
差を発生させて用紙を搬送することができ、部品点数を
減らしコストダウンが計れるばかりでなく、省電力化の
面でも大きく貢献する。
As described above, according to the present invention, it is possible to convey a sheet by generating a pressure difference of air in the sheet conveying path without using a fan motor or the like, reducing the number of parts and reducing the cost. Not only can the downtime be measured, but it will also contribute significantly to saving power.

【0017】また、羽根車の羽根の向きを変えることに
より、用紙搬送経路に発生する空気の圧力を負圧、また
は、正圧に変えられ、用紙搬送経路の用紙ガイドに用紙
を密着させたり、逆に浮き上がらせたりする切り替えが
容易に行える。
Further, by changing the direction of the blades of the impeller, the pressure of the air generated in the sheet conveying path can be changed to a negative pressure or a positive pressure, and the sheet can be brought into close contact with the sheet guide in the sheet conveying path. On the contrary, it is possible to easily switch to make it float.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の一例を示す全体斜視図である。FIG. 1 is an overall perspective view showing an example of the present invention.

【図2】 図1の羽根車部を拡大して示す縦断面図であ
る。
FIG. 2 is an enlarged vertical sectional view showing the impeller portion of FIG.

【図3】 本発明の他の例を示す全体斜視図である。FIG. 3 is an overall perspective view showing another example of the present invention.

【符号の説明】[Explanation of symbols]

1は搬送ロール、2はモータ、3は用紙、4はロール、
5はバネ、6は羽根車、7はケース、8はパイプ、9は
用紙ガイド、10はベルト、11はプリントヘッドであ
る。
1 is a transport roll, 2 is a motor, 3 is paper, 4 is a roll,
5 is a spring, 6 is an impeller, 7 is a case, 8 is a pipe, 9 is a paper guide, 10 is a belt, and 11 is a print head.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】用紙搬送経路に発生させた空気の圧力差を
利用して用紙を搬送する用紙搬送機構において、 用紙を搬送する搬送ロールと、該搬送ロールを駆動する
モータと、前記搬送ロールに合わせて回動するよう設け
られた羽根車と、該羽根車の回動軸方向に設けられ空気
の流路となるパイプと、該パイプを連結し用紙搬送のた
めの開放孔を有した用紙ガイドとより構成されたことを
特徴とする用紙搬送機構。
1. A paper carrying mechanism for carrying paper by utilizing a pressure difference of air generated in a paper carrying path, a carrying roll for carrying paper, a motor for driving the carrying roll, and the carrying roll. An impeller provided so as to rotate together, a pipe provided in the rotational axis direction of the impeller and serving as an air flow path, and a paper guide having an open hole for connecting the pipe and for carrying the paper. A paper transport mechanism comprising:
【請求項2】前記羽根車を前記用紙ガイドの開放孔の空
気が負圧に変化するよう設けたことを特徴とする請求項
1記載の用紙搬送機構。
2. The sheet conveying mechanism according to claim 1, wherein the impeller is provided so that the air in the open hole of the sheet guide changes to a negative pressure.
【請求項3】前記羽根車を前記用紙ガイドの開放孔の空
気が正圧に変化するよう設けたことを特徴とする請求項
1記載の用紙搬送機構。
3. The sheet conveying mechanism according to claim 1, wherein the impeller is provided so that the air in the open hole of the sheet guide changes to a positive pressure.
【請求項4】用紙搬送経路に発生させた空気の圧力差を
利用して用紙を搬送する用紙搬送機構において、 外周に複数の開放孔を有した中空構造の搬送ロールと、
該搬送ロールを駆動するモータと、該搬送ロールの端部
に、前記搬送ロールの回転により搬送ロール内の空気の
圧力が負圧に変化するよう動作する羽根車とを有する特
徴とする用紙搬送機構。
4. A paper carrying mechanism for carrying paper by utilizing a pressure difference of air generated in a paper carrying path, and a carrying roll having a hollow structure having a plurality of open holes on an outer periphery,
A sheet transport mechanism including a motor for driving the transport roll and an impeller at an end of the transport roll that operates so that the pressure of the air in the transport roll changes to a negative pressure due to the rotation of the transport roll. .
JP11639796A 1996-05-10 1996-05-10 Paper feed mechanism Pending JPH09300752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11639796A JPH09300752A (en) 1996-05-10 1996-05-10 Paper feed mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11639796A JPH09300752A (en) 1996-05-10 1996-05-10 Paper feed mechanism

Publications (1)

Publication Number Publication Date
JPH09300752A true JPH09300752A (en) 1997-11-25

Family

ID=14686038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11639796A Pending JPH09300752A (en) 1996-05-10 1996-05-10 Paper feed mechanism

Country Status (1)

Country Link
JP (1) JPH09300752A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003118909A (en) * 2001-10-17 2003-04-23 Seiko Epson Corp Recording medium feeder and recording device therewith
US7093931B2 (en) 2001-10-17 2006-08-22 Seiko Epson Corporation Fixed material transportation apparatus, fixed material discharging apparatus, method for discharging the fixed material, and liquid fixing apparatus
DE102011117494A1 (en) * 2011-10-31 2013-05-02 Eastman Kodak Company Apparatus and method for printing a substrate web

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003118909A (en) * 2001-10-17 2003-04-23 Seiko Epson Corp Recording medium feeder and recording device therewith
US7093931B2 (en) 2001-10-17 2006-08-22 Seiko Epson Corporation Fixed material transportation apparatus, fixed material discharging apparatus, method for discharging the fixed material, and liquid fixing apparatus
US7367668B2 (en) 2001-10-17 2008-05-06 Seiko Epson Corporation Fixed material transportation apparatus, fixed material discharging apparatus, method for discharging the fixed material, liquid fixing apparatus
DE102011117494A1 (en) * 2011-10-31 2013-05-02 Eastman Kodak Company Apparatus and method for printing a substrate web

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