JP2019026453A5 - - Google Patents
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- JP2019026453A5 JP2019026453A5 JP2017150090A JP2017150090A JP2019026453A5 JP 2019026453 A5 JP2019026453 A5 JP 2019026453A5 JP 2017150090 A JP2017150090 A JP 2017150090A JP 2017150090 A JP2017150090 A JP 2017150090A JP 2019026453 A5 JP2019026453 A5 JP 2019026453A5
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- sheet
- roller pair
- transport
- state
- transfer
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- 238000011144 upstream manufacturing Methods 0.000 claims 3
- 230000000875 corresponding Effects 0.000 claims 1
Description
本発明は、上記文献に記載されたシート搬送装置をさらに発展させたシート搬送装置を提供することを目的とする。 An object of the present invention is to provide a sheet transfer device which is a further development of the sheet transfer device described in the above document .
本発明の一態様に係るシート搬送装置は、シートを挟持して搬送する搬送ローラ対と、シート搬送方向において前記搬送ローラ対の下流に設けられて、シートを挟持して搬送するレジストレーションローラ対であって、前記搬送ローラ対によって搬送されるシートの先端が当接されることでシートの斜行を補正するレジストレーションローラ対と、前記搬送ローラ対によって搬送されるシートを前記レジストレーションローラ対に向けて案内する搬送ガイドであって、前記シート搬送方向に直交する幅方向から視た場合に、前記シート搬送方向の下流に向かって上方に傾斜し、かつ、前記レジストレーションローラ対に近付くにつれて水平方向に対する傾斜が大きくなるように湾曲したシート搬送路を形成する搬送ガイドと、前記搬送ローラ対を互いに当接させる第１状態と、前記第１状態よりも大きな当接圧で互いに当接させる第２状態とに切換可能な切換手段と、前記第１状態の前記搬送ローラ対により前記レジストレーションローラ対に向けてシートを搬送する第１モードと、前記第２状態の前記搬送ローラ対により前記レジストレーションローラ対に向けてシートを搬送する第２モードと、を実行可能な制御手段と、を備え、前記制御手段は、第１の坪量のシートを搬送する場合は、前記第１モードを実行し、前記第１の坪量よりも大きな第２の坪量のシートを搬送する場合は、前記第２モードを実行する、ことを特徴とする。 The sheet transfer device according to one aspect of the present invention includes a transfer roller pair that sandwiches and conveys the sheet, and a registration roller pair that is provided downstream of the transfer roller pair in the sheet transfer direction and transfers the sheet. The registration roller pair that corrects the skew of the sheet by abutting the tips of the sheets conveyed by the transfer roller pair and the registration roller pair that corrects the skew of the sheet and the sheet conveyed by the transfer roller pair. When viewed from the width direction orthogonal to the sheet transport direction, the transport guide is inclined upward toward the downstream side of the sheet transport direction, and as it approaches the registration roller pair. A transport guide that forms a curved sheet transport path with a large inclination with respect to the horizontal direction, a first state in which the transport roller pair is brought into contact with each other, and a contact pressure larger than the first state are brought into contact with each other. The switching means capable of switching to the second state, the first mode in which the sheet is conveyed toward the registration roller pair by the transfer roller pair in the first state, and the transfer roller pair in the second state. A second mode for transporting the sheet toward the registration roller pair and a control means capable of executing the first mode are provided, and the control means performs the first mode when transporting the sheet having the first basis weight. It is characterized in that the second mode is executed when the sheet having a second basis weight larger than the first basis weight is conveyed .
本発明に係るシート搬送装置によれば、シート搬送動作の安定性を確保することができる。 According to the sheet transporting device according to the present invention, the stability of the sheet conveying operation may ensure to Rukoto.
Claims (6)
シート搬送方向において前記搬送ローラ対の下流に設けられて、シートを挟持して搬送するレジストレーションローラ対であって、前記搬送ローラ対によって搬送されるシートの先端が当接されることでシートの斜行を補正するレジストレーションローラ対と、
前記搬送ローラ対によって搬送されるシートを前記レジストレーションローラ対に向けて案内する搬送ガイドであって、前記シート搬送方向に直交する幅方向から視た場合に、前記シート搬送方向の下流に向かって上方に傾斜し、かつ、前記レジストレーションローラ対に近付くにつれて水平方向に対する傾斜が大きくなるように湾曲したシート搬送路を形成する搬送ガイドと、
前記搬送ローラ対を互いに当接させる第１状態と、前記第１状態よりも大きな当接圧で互いに当接させる第２状態とに切換可能な切換手段と、
前記第１状態の前記搬送ローラ対により前記レジストレーションローラ対に向けてシートを搬送する第１モードと、前記第２状態の前記搬送ローラ対により前記レジストレーションローラ対に向けてシートを搬送する第２モードと、を実行可能な制御手段と、
を備え、
前記制御手段は、第１の坪量のシートを搬送する場合は、前記第１モードを実行し、前記第１の坪量よりも大きな第２の坪量のシートを搬送する場合は、前記第２モードを実行する、
ことを特徴とするシート搬送装置。 A pair of transport rollers that sandwich and transport the sheet,
A registration roller pair provided downstream of the transport roller pair in the sheet transport direction to sandwich and transport the sheet, and the tip of the sheet transported by the transport roller pair is brought into contact with the sheet. A pair of registration rollers that correct skew,
A transport guide that guides a sheet transported by the transfer roller pair toward the registration roller pair, and when viewed from a width direction orthogonal to the sheet transfer direction, toward a downstream direction in the sheet transfer direction. A transfer guide that forms a sheet transfer path that is inclined upward and is curved so that the inclination in the horizontal direction increases as it approaches the registration roller pair.
A switching means capable of switching between a first state in which the transport roller pairs are brought into contact with each other and a second state in which the transport roller pairs are brought into contact with each other with a contact pressure larger than that of the first state.
A first mode in which the sheet is conveyed toward the registration roller pair by the transfer roller pair in the first state, and a first mode in which the sheet is conveyed toward the registration roller pair by the transfer roller pair in the second state. Two modes, control means that can execute,
With
The control means executes the first mode when transporting a sheet having a first basis weight, and when transporting a sheet having a second basis weight larger than the first basis weight, the first mode is described. Execute 2 modes,
A sheet transfer device characterized by this.
前記制御手段は、前記搬送ローラ対を前記第３状態として前記レジストレーションローラ対に向けてシートを搬送する第３モードを有し、
前記制御手段は、前記第１の坪量のシートよりも小さい第３の坪量のシートを搬送する場合は、第３モードを実行する、
ことを特徴とする、請求項１に記載のシート搬送装置。 The switching means can be switched to a third state in which the transport roller pair is separated.
The control means has a third mode in which the sheet is conveyed toward the registration roller pair with the transfer roller pair in the third state.
The control means executes a third mode when transporting a third basis weight sheet smaller than the first basis weight sheet.
The sheet transport device according to claim 1, wherein the sheet transport device is characterized by the above.
前記制御手段は、前記第３モードを実行する場合、前記上流側搬送ローラ対によってシートの先端を前記レジストレーションローラ対に当接させる、
ことを特徴とする、請求項２に記載のシート搬送装置。 Provided upstream conveying roller pair located upstream of the front Ki搬feed rollers in the sheet conveying direction,
Wherein, when running the third mode, it causes the leading edge of the sheet by the front Symbol upstream conveying roller pair abuts on the registration roller pair,
The sheet transport device according to claim 2, wherein the sheet transport device is characterized by the above.
第１方向及び前記第１方向の反対の第２方向に回転可能な駆動モータをさらに備え、
前記駆動モータが前記第１方向に回転する場合、前記駆動ローラが回転駆動され、
前記駆動モータが前記第２方向に回転する場合、前記切換手段によって前記搬送ローラ対の状態が切換わる、
ことを特徴とする、請求項１乃至３のいずれか１項に記載のシート搬送装置。 The transport roller pair has a drive roller and a driven roller that follows the rotation of the drive roller.
Further provided with a drive motor capable of rotating in the first direction and the second direction opposite to the first direction.
When the drive motor rotates in the first direction, the drive roller is rotationally driven.
When the drive motor rotates in the second direction, the state of the transport roller pair is switched by the switching means.
The sheet transport device according to any one of claims 1 to 3 , wherein the sheet transport device is characterized by the above.
ことを特徴とする、請求項４に記載のシート搬送装置。 The switching means includes a rotatable cam member, a swing member that swings by the cam member, and an elastic member that connects the swing member and the driven roller, and the swing member swings. the driven rollers contact and moved away to the driving roller by, and in a state in which the driving roller and the driven roller is in contact, the driven by an elastic force corresponding to the position of the swinging member to the elastic member By pressing the rollers toward the drive rollers, the contact pressure of the transport roller pair is changed .
The sheet transport device according to claim 4 , wherein the sheet transport device is characterized by this.
ことを特徴とする、請求項１乃至５のいずれか１項に記載のシート搬送装置。 An image forming means for forming an image on a sheet sent out from the registration roller pair is provided.
The sheet transport device according to any one of claims 1 to 5 , wherein the sheet transport device is characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017150090A JP6968611B2 (en) | 2017-08-02 | 2017-08-02 | Sheet transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017150090A JP6968611B2 (en) | 2017-08-02 | 2017-08-02 | Sheet transfer device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019026453A JP2019026453A (en) | 2019-02-21 |
| JP2019026453A5 true JP2019026453A5 (en) | 2020-09-10 |
| JP6968611B2 JP6968611B2 (en) | 2021-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017150090A Active JP6968611B2 (en) | 2017-08-02 | 2017-08-02 | Sheet transfer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6968611B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7316547B2 (en) * | 2019-11-08 | 2023-07-28 | 株式会社リコー | Multi-tray paper feeder and image forming device |
| JP7377457B2 (en) | 2020-01-17 | 2023-11-10 | 株式会社リコー | Sheet conveyance device and image forming device |
| JP7434980B2 (en) * | 2020-02-10 | 2024-02-21 | 株式会社リコー | Image forming device and method of controlling the image forming device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3123257B2 (en) * | 1992-04-16 | 2001-01-09 | 富士ゼロックス株式会社 | Paper alignment device for image forming equipment |
| JPH09235047A (en) * | 1996-03-01 | 1997-09-09 | Matsushita Electric Ind Co Ltd | Skew correction device of cut sheet |
| JP2014189345A (en) * | 2013-03-26 | 2014-10-06 | Fuji Xerox Co Ltd | Conveying apparatus and image forming apparatus |
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2017
- 2017-08-02 JP JP2017150090A patent/JP6968611B2/en active Active
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