JP2000247471A5 - - Google Patents

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Publication number
JP2000247471A5
JP2000247471A5 JP1999051445A JP5144599A JP2000247471A5 JP 2000247471 A5 JP2000247471 A5 JP 2000247471A5 JP 1999051445 A JP1999051445 A JP 1999051445A JP 5144599 A JP5144599 A JP 5144599A JP 2000247471 A5 JP2000247471 A5 JP 2000247471A5
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Japan
Prior art keywords
paper feeding
sheets
nip portion
paper
abutting member
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JP1999051445A
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Japanese (ja)
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JP4006127B2 (en
JP2000247471A (en
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Priority to JP05144599A priority Critical patent/JP4006127B2/en
Priority claimed from JP05144599A external-priority patent/JP4006127B2/en
Publication of JP2000247471A publication Critical patent/JP2000247471A/en
Publication of JP2000247471A5 publication Critical patent/JP2000247471A5/ja
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Publication of JP4006127B2 publication Critical patent/JP4006127B2/en
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【特許請求の範囲】
【請求項1】 傾斜して設けられたシート積載手段に積載されたシート束からシートを1枚ずつ分離して給紙する給紙装置において、
給紙手段と該給紙手段に圧接した分離部材とを備え、前記シートを1枚ずつ分離して給紙する分離給紙手段と、
前記給紙手段と分離部材とのニップ部の上流に設けられ、自重により前記ニップ部に進入しようとするシート束の先端位置を規制する突き当て部材と、
前記分離給紙手段による給紙動作開始の際、前記シート束のシートを1枚ずつ前記ニッ部に進入させるように前記突き当て部材を給紙方向に対して垂直方向に低速で移動させる移動手段と、
を備えたことを特徴とする給紙装置。
【請求項2】 前記移動手段は、前記突き当て部材を給紙動作に連動して移動させることを特徴とする請求項1記載の給紙装置。
【請求項3】 前記移動手段は、給紙動作に連動して回転する回転体と、該回転体の回転を前記突き当て部材に伝達し、該突き当て部材を給紙方向に対して垂直方向に低速で移動させる伝達機構とを有することを特徴とする請求項2記載の給紙装置。
【請求項4】 前記突き当て部材は、シート搬送路を形成する上側ガイドフレームに形成した開口部から前記シート搬送路へ突出可能に回動及びスライド移動可能に設けられ、前記伝達機構は、前記回転体の回転に伴って回転するネジ部と、前記突き当て部材に設けられ、前記ネジ部と係合する係合部とを有し、前記ネジ部の回転により係合部を介して前記突き当て部材がスライド移動して前記開口部の縁部に当接して前記垂直方向に回転移動することを特徴とする請求項3記載の給紙装置。
【請求項5】 傾斜して設けられたシート積載手段に積載されたシート束からシートを1枚ずつ分離して給紙する給紙装置において、
給紙手段と該給紙手段に圧接した分離部材とを備え、前記シートを1枚ずつ分離して給紙する分離給紙手段と、
前記給紙手段と分離部材とのニップ部の上流に回動可能に設けられ、シート束の先端位置を規制する突き当て部材と、
自重により前記ニップ部に進入しようとするシート束に押圧されて前記シート束のシートを1枚ずつ前記ニップ部に進入させるように前記突き当て部材を給紙方向に対して垂直方向に低速で回動させる回動手段と、
を備えたことを特徴とする給紙装置。
【請求項6】 前記回動手段は、回動軸を介して前記突き当て部材を回動可能に保持する保持部材と、前記突き当て部材を前記保持部材に付勢する付勢手段と、給紙方向に対して垂直方向への前記突き当て部材の回動に伴い前記付勢手段による付勢力を増加させるよう作用するカム機構を有していることを特徴とする請求項5記載の給紙装置。
【請求項7】 傾斜して設けられたシート積載手段に積載されたシート束からシートを1枚ずつ分離して給紙する給紙装置において、
給紙手段と該給紙手段に圧接した分離部材とを備え、前記シートを1枚ずつ分離して給紙する分離給紙手段と、
前記給紙手段と分離部材とのニップ部の上流に設けられ、自重により前記ニップ部に進入しようとするシート束の先端位置を規制すると共に、前記ニップ部にかかるシートの荷重を低減するよう該ニップ部に進入するシートの枚数を制限する突き当て部材と、
を備えたことを特徴とする給紙装置。
【請求項8】 前記突き当て部材は、前記給紙手段と前記分離部材のニップ部のシート進入方向と直交する方向における両側に配置されたリブ形状の突き当て壁であることを特徴とする請求項7記載の給紙装置。
【請求項9】 画像形成部と、給紙装置とを備えた画像形成装置において、
前記給紙装置は、前記請求項1乃至8のいずれかに記載のものであることを特徴とする画像形成装置。
[Claims]
1. In a paper feeding device for feeding sheets one by one from a bundle of sheets loaded on an inclined sheet loading means.
A separate paper feeding means that includes a paper feeding means and a separating member that is press-contacted with the paper feeding means, and separates and feeds the sheets one by one.
An abutting member provided upstream of the nip portion between the paper feeding means and the separating member and regulating the position of the tip of the sheet bundle that tries to enter the nip portion by its own weight.
When the paper feeding operation is started by the separate paper feeding means, the moving means for moving the abutting member at a low speed in the direction perpendicular to the paper feeding direction so as to allow the sheets of the sheet bundle to enter the nibs one by one. When,
A paper feeding device characterized by being equipped with.
2. The paper feeding device according to claim 1, wherein the moving means moves the abutting member in conjunction with a paper feeding operation.
3. The moving means transmits a rotating body that rotates in conjunction with a paper feeding operation and the rotation of the rotating body to the abutting member, and transmits the abutting member in a direction perpendicular to the paper feeding direction. The paper feeding device according to claim 2, further comprising a transmission mechanism for moving the paper at a low speed.
4. The abutting member is provided so as to be rotatable and slidably movable so as to project from an opening formed in an upper guide frame forming a seat transport path to the sheet transport path, and the transmission mechanism is described. It has a screw portion that rotates with the rotation of the rotating body and an engaging portion that is provided on the abutting member and engages with the screw portion. The paper feeding device according to claim 3, wherein the contact member slides and moves, abuts on the edge of the opening, and rotates in the vertical direction.
5. In a paper feeding device for feeding sheets one by one from a bundle of sheets loaded on an inclined sheet loading means.
A separate paper feeding means that includes a paper feeding means and a separating member that is press-contacted with the paper feeding means, and separates and feeds the sheets one by one.
An abutting member that is rotatably provided upstream of the nip portion between the paper feeding means and the separating member and regulates the tip position of the sheet bundle.
The abutting member is rotated at a low speed in the direction perpendicular to the paper feeding direction so as to be pressed by the sheet bundle that is about to enter the nip portion by its own weight and allow the sheets of the sheet bundle to enter the nip portion one by one. Rotating means to move and
A paper feeding device characterized by being equipped with.
Wherein said rotating means comprises a holding member for holding the abutment member pivotally via a pivot shaft, and biasing means for biasing the abutment member to the holding member, the paper The paper feed according to claim 5, further comprising a cam mechanism that acts to increase the urging force of the urging means as the abutting member rotates in a direction perpendicular to the paper direction. apparatus.
7. In a paper feeding device for feeding sheets one by one from a bundle of sheets loaded on an inclined sheet loading means.
A separate paper feeding means that includes a paper feeding means and a separating member that is press-contacted with the paper feeding means, and separates and feeds the sheets one by one.
The sheet bundle provided upstream of the nip portion between the paper feeding means and the separating member regulates the tip position of the sheet bundle that tries to enter the nip portion by its own weight, and reduces the load on the sheet applied to the nip portion. Abuting member that limits the number of sheets that can enter the nip
A paper feeding device characterized by being equipped with.
8. The abutting member is a rib-shaped abutting wall arranged on both sides in a direction orthogonal to a sheet entry direction of a nip portion of the paper feeding means and the separating member. Item 7. The paper feeding device according to item 7.
9. In an image forming apparatus including an image forming unit and a paper feeding device, the present invention
The image forming apparatus according to any one of claims 1 to 8, wherein the paper feeding device is the one according to any one of claims 1 to 8.

【0016】
【課題を解決するための手段】
本発明は、傾斜して設けられたシート積載手段に積載されたシート束からシートを1枚ずつ分離して給紙する給紙装置において、給紙手段と該給紙手段に圧接した分離部材とを備え、前記シートを1枚ずつ分離して給紙する分離給紙手段と、前記給紙手段と分離部材とのニップ部の上流に設けられ、自重により前記ニップ部に進入しようとするシート束の先端位置を規制する突き当て部材と、前記分離給紙手段による給紙動作開始の際、前記シート束のシートを1枚ずつ前記ニップ部に進入させるように前記突き当て部材を給紙方向に対して垂直方向に低速で移動させる移動手段と、を備えたことを特徴とするものである。
0016.
[Means for solving problems]
The present invention is a paper feeding device that separates and feeds sheets one by one from a bundle of sheets loaded on an inclined sheet loading means, wherein the paper feeding means and a separating member pressed against the paper feeding means. A separate paper feeding means for separating and feeding the sheets one by one, and a bundle of sheets provided upstream of the nip portion between the paper feeding means and the separating member and trying to enter the nip portion by its own weight. The abutting member that regulates the tip position of the paper and the abutting member in the paper feeding direction so that the sheets of the sheet bundle enter the nip portion one by one when the paper feeding operation is started by the separate paper feeding means. On the other hand, it is characterized by being provided with a moving means for moving at a low speed in the vertical direction.

また本発明は、前記突き当て部材は、シート搬送路を形成する上側ガイドフレームに形成した開口部から前記シート搬送路へ突出可能に回動及びスライド移動可能に設けられ、前記伝達機構は、前記回転体の回転に伴って回転するネジ部と、前記突き当て部材に設けられ、前記ネジ部と係合する係合部とを有し、前記ネジ部の回転により係合部を介して前記突き当て部材がスライド移動して前記開口部の縁部に当接して前記垂直方向に回転移動することを特徴とするものである。 Further, in the present invention, the abutting member is provided so as to be rotatable and slidably movable so as to project from an opening formed in the upper guide frame forming the seat transport path to the sheet transport path, and the transmission mechanism is the same. It has a screw portion that rotates with the rotation of the rotating body and an engaging portion that is provided on the abutting member and engages with the screw portion. The contact member slides and abuts on the edge of the opening to rotate in the vertical direction.

また本発明は、前記回動手段は、回動軸を介して前記突き当て部材を回動可能に保持する保持部材と、前記突き当て部材を前記保持部材に付勢する付勢手段と、給紙方向に対して垂直方向への前記突き当て部材の回動に伴い前記付勢手段による付勢力を増加させるよう作用するカム機構を有していることを特徴とするものである。 The present invention, said rotating means comprises a holding member for holding and rotating the abutment member via the pivot shaft, and biasing means for biasing the abutment member to the holding member, the paper It is characterized by having a cam mechanism that acts to increase the urging force by the urging means as the abutting member rotates in a direction perpendicular to the paper direction.

また本発明は、前記突き当て部材は、前記給紙手段と前記分離部材のニップ部のシート進入方向と直交する方向における両側に配置されたリブ形状の突き当て壁であることを特徴とするものである。 Further, the present invention is characterized in that the abutting member is a rib-shaped abutting wall arranged on both sides in a direction orthogonal to the sheet entry direction of the nip portion of the paper feeding means and the separating member. Is.

JP05144599A 1999-02-26 1999-02-26 Paper feeding device and image forming apparatus having the same Expired - Fee Related JP4006127B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05144599A JP4006127B2 (en) 1999-02-26 1999-02-26 Paper feeding device and image forming apparatus having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05144599A JP4006127B2 (en) 1999-02-26 1999-02-26 Paper feeding device and image forming apparatus having the same

Publications (3)

Publication Number Publication Date
JP2000247471A JP2000247471A (en) 2000-09-12
JP2000247471A5 true JP2000247471A5 (en) 2007-01-18
JP4006127B2 JP4006127B2 (en) 2007-11-14

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ID=12887140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05144599A Expired - Fee Related JP4006127B2 (en) 1999-02-26 1999-02-26 Paper feeding device and image forming apparatus having the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4534878B2 (en) * 2005-06-21 2010-09-01 富士ゼロックス株式会社 Sheet supply apparatus and image forming apparatus
JP6380164B2 (en) * 2015-02-27 2018-08-29 ブラザー工業株式会社 Transport device

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