JP2008162744A5 - - Google Patents

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Publication number
JP2008162744A5
JP2008162744A5 JP2006353456A JP2006353456A JP2008162744A5 JP 2008162744 A5 JP2008162744 A5 JP 2008162744A5 JP 2006353456 A JP2006353456 A JP 2006353456A JP 2006353456 A JP2006353456 A JP 2006353456A JP 2008162744 A5 JP2008162744 A5 JP 2008162744A5
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JP
Japan
Prior art keywords
sheet
conveyance
conveying
image forming
roller
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JP2006353456A
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Japanese (ja)
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JP4950654B2 (en
JP2008162744A (en
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Priority to JP2006353456A priority Critical patent/JP4950654B2/en
Priority claimed from JP2006353456A external-priority patent/JP4950654B2/en
Publication of JP2008162744A publication Critical patent/JP2008162744A/en
Publication of JP2008162744A5 publication Critical patent/JP2008162744A5/ja
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Publication of JP4950654B2 publication Critical patent/JP4950654B2/en
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Claims (5)

画像形成部により第１面に画像が形成されたシートの反対側の第２面に画像を形成するようシートを反転させ、前記画像形成部に再度搬送する画像形成装置において、
シートを搬送するシート搬送部と、
前記シート搬送部の下流側に配置され、前記シート搬送部により搬送されてくるシートを排出するシート排出ローラと、
前記第１面に画像が形成されたシートを再度、前記画像形成部に搬送するための再搬送通路と、
前記シート搬送部と前記シート排出ローラとの間のシート搬送路から分岐して設けられた引込み通路と、
前記引込み通路に設けられ、前記シート搬送部により前記シート搬送路と前記引込み通路との分岐点を経て前記引込み通路に搬送されたシートを引込み通路側に一旦引き込んだ後、反転させて前記再搬送通路に搬送する正逆転可能なシート反転搬送ローラと、
前記第１面に画像が形成されたシートを前記シート反転搬送ローラに導く位置及び前記シート排出ローラに導く位置に選択的に移動する切換部材と、を備え、
前記シート反転搬送ローラを、前記分岐点から前記シート反転搬送ローラまでのシート搬送距離の方が、前記分岐点から前記シート排出ローラまでのシート搬送距離よりも短くなるような位置に設けたことを特徴とする画像形成装置。 In the image forming apparatus that inverts the sheet so as to form an image on the second surface on the opposite side of the sheet on which the image is formed on the first surface by the image forming unit, and transports the image to the image forming unit again.
A sheet conveying section for conveying the sheet;
A sheet discharge roller that is disposed on the downstream side of the sheet conveyance unit and discharges the sheet conveyed by the sheet conveyance unit;
A re-conveying passage for conveying the sheet on which the image is formed on the first surface to the image forming unit again;
A pull-in passage provided by branching from a sheet conveyance path between the sheet conveyance section and the sheet discharge roller;
The sheet is provided in the drawing path, and the sheet conveyed by the sheet conveying section through the branch point between the sheet conveying path and the drawing path is once drawn into the drawing path and then reversed and re-conveyed. A sheet reversing and conveying roller capable of forward / reverse conveyance to the path
And a switching member for selectively moving to a position for guiding the first image is formed on the surface sheet to the position and the sheet discharge rollers guided to the sheet reversing conveying roller,
The sheet reversal conveyance roller is provided at a position such that a sheet conveyance distance from the branch point to the sheet reverse conveyance roller is shorter than a sheet conveyance distance from the branch point to the sheet discharge roller. An image forming apparatus. 前記シート排出ローラがそれぞれ設けられ、各前記シート排出ローラにより排出されるシートが積載される複数のシート積載部を備え、
前記シート反転搬送ローラを、前記分岐点から前記シート反転搬送ローラまでのシート搬送距離の方が、前記分岐点から前記複数のシート積載部に設けられた各シート排出ローラまでのシート搬送距離よりも短くなるような位置に設けたことを特徴とする請求項１記載の画像形成装置。 Each of the sheet discharge rollers is provided, and includes a plurality of sheet stacking units on which sheets discharged by the sheet discharge rollers are stacked,
The sheet conveying distance from the branch point to the sheet reverse conveying roller is greater than the sheet conveying distance from the branch point to each sheet discharge roller provided in the plurality of sheet stacking units. The image forming apparatus according to claim 1, wherein the image forming apparatus is provided at a position that is shortened. 前記シート排出ローラを前記シート反転搬送ローラよりも上方に配置したことを特徴とする請求項１又は２記載の画像形成装置。 The image forming apparatus according to claim 1 or 2, wherein the said sheet discharge roller is arranged above side than the sheet reverse conveying rollers. 前記引込み通路の下流側に設けられ、前記シート反転搬送ローラにより一旦引き込まれたシートが搬送される反転前搬送路を備え、
前記反転前搬送路を装置本体内部に設けたことを特徴とする請求項１ないし３のいずれか１項に記載の画像形成装置。 Provided on the downstream side of the drawing-in passage, and includes a pre-reversing conveyance path through which the sheet once drawn by the sheet reversing conveyance roller is conveyed,
The image forming apparatus according to claim 1, wherein the pre-reversing conveyance path is provided inside the apparatus main body. 装置本体の側面に設けられ、前記シート排出ローラにより排出されるシートが積載されるシート積載部と、
装置本体内部に設けられ、前記シート搬送部により前記シート排出ローラに向けて搬送されるシートが通過する排紙通路と、を備え、
前記排紙通路に、前記シート搬送部により搬送されたシートを前記シート排出ローラに向けて搬送する搬送ローラ対を備えたことを特徴とする請求項１記載の画像形成装置。 A sheet stacking unit provided on a side surface of the apparatus main body, on which sheets discharged by the sheet discharge roller are stacked;
A sheet discharge passage provided inside the apparatus main body and through which a sheet conveyed toward the sheet discharge roller by the sheet conveyance unit passes,
The image forming apparatus according to claim 1, further comprising: a pair of conveyance rollers configured to convey the sheet conveyed by the sheet conveyance unit toward the sheet discharge roller in the sheet discharge path.
JP2006353456A 2006-12-27 2006-12-27 Image forming apparatus Active JP4950654B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006353456A JP4950654B2 (en) 2006-12-27 2006-12-27 Image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006353456A JP4950654B2 (en) 2006-12-27 2006-12-27 Image forming apparatus

Publications (3)

Publication Number Publication Date
JP2008162744A JP2008162744A (en) 2008-07-17
JP2008162744A5 true JP2008162744A5 (en) 2010-02-12
JP4950654B2 JP4950654B2 (en) 2012-06-13

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ID=39692727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006353456A Active JP4950654B2 (en) 2006-12-27 2006-12-27 Image forming apparatus

Country Status (1)

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JP (1) JP4950654B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6500561B2 (en) 2015-03-31 2019-04-17 ブラザー工業株式会社 Image forming device
JP6443181B2 (en) * 2015-03-31 2018-12-26 ブラザー工業株式会社 Image forming apparatus
JP2016218286A (en) 2015-05-21 2016-12-22 キヤノン株式会社 Image forming apparatus and sheet conveyance device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4541933B2 (en) * 2004-03-22 2010-09-08 キヤノン株式会社 Image forming apparatus
JP2005280856A (en) * 2004-03-26 2005-10-13 Canon Inc Image forming apparatus
JP4368766B2 (en) * 2004-08-31 2009-11-18 京セラミタ株式会社 Image forming apparatus

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