WO2011118239A1 - Document separation mechanism - Google Patents

Document separation mechanism Download PDF

Info

Publication number
WO2011118239A1
WO2011118239A1 PCT/JP2011/050148 JP2011050148W WO2011118239A1 WO 2011118239 A1 WO2011118239 A1 WO 2011118239A1 JP 2011050148 W JP2011050148 W JP 2011050148W WO 2011118239 A1 WO2011118239 A1 WO 2011118239A1
Authority
WO
WIPO (PCT)
Prior art keywords
separation
document
roller
piece
urging
Prior art date
Application number
PCT/JP2011/050148
Other languages
French (fr)
Japanese (ja)
Inventor
真由 宇野
正仁 佐伯
Original Assignee
ブラザー工業株式会社
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 ブラザー工業株式会社 filed Critical ブラザー工業株式会社
Publication of WO2011118239A1 publication Critical patent/WO2011118239A1/en

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/46Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52Friction retainers acting on under or rear side of article being separated
    • B65H3/5207Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/523Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
    • B65H3/5238Retainers of the pad-type, e.g. friction pads

Definitions

  • the present invention relates to a document separation mechanism that separates and transports a single document from a plurality of stacked documents.
  • Patent Document 1 there has been proposed a paper feeding device in which a pickup roller and a paper feeding roller are arranged side by side in the sheet conveyance direction.
  • a plurality of blades are arranged back and forth in the sheet conveying direction and pressed against a paper feed roller.
  • Each of these blades is provided on a holding member so as to be rotatable about a predetermined fulcrum.
  • Each blade is provided with a spring biased so that each of its leading edges presses against the paper feed roller.
  • One aspect of the present invention made in view of the above-described conventional problems is a document separation mechanism that separates and transports a single document from a plurality of stacked documents, and separates a first document from a plurality of stacked documents.
  • a separation roller and a first separation member the front end portion of which is arranged close to the outer peripheral surface of the separation roller, and separates the second document attached to the first document conveyed by the separation roller from the first document.
  • a first separation position of the second document by the first separation piece is compared with a third separation position of the second document by the third separation piece.
  • the second separation piece is disposed on the upstream side in the conveyance direction of the first original and on the one end side in the separation roller width direction on the outer circumferential surface of the separation roller from the third separation position.
  • the second separation position of the document is the third separation position. Compared with the position on the upstream side in the transport direction, and a document separating mechanism characterized by being positioned at the other end of the third separation the separation roller width direction from the position.
  • the separation roller, the first separation piece, the second separation piece, and the third separation piece respectively Means that the separation roller is in contact with each of the first separation piece, the second separation piece, and the third separation piece.
  • This document separation mechanism can be configured as follows. That is, the third separation position may be arranged so as to include the center in the width direction of the separation roller. According to this, the separation of the second document from the first document by the third separation piece can be performed at a position including the center in the separation roller width direction on the outer peripheral surface of the separation roller.
  • each of the first separation position and the second separation position may be on an imaginary straight line along a rotation axis of the separation roller. According to this, the separation of the second document from the first document by the first separation piece at the first separation position, and the separation of the second document from the first document by the second separation piece at the second separation position, Can be started at the same timing.
  • each of the first separation position and the second separation position may be on the imaginary straight line parallel to the rotation axis of the separation roller. According to this, the separation of the second document from the first document by the first separation piece at the first separation position, and the separation of the second document from the first document by the second separation piece at the second separation position, Can be started at the same time. Accordingly, it is possible to perform document separation while preventing skew feeding.
  • the document separating mechanism further includes a second document that is disposed at a front end portion adjacent to the outer peripheral surface of the separation roller and attached to the first document conveyed by the separation roller. And a fourth separation position of the second document by the fourth separation piece is upstream of the first separation position in the transport direction, and the fourth separation piece is separated from the first separation position.
  • the fifth separation position of the second document by the fifth separation piece is disposed on one end side in the separation roller width direction from the first separation position, and is located upstream of the second separation position in the transport direction, and It may be arranged on the other end side in the width direction of the separation roller from the second separation position.
  • the first document can be further preferably separated, and the separated first document can be prevented from skewing.
  • the 4th separation piece and the 5th separation piece arrange
  • the state in the vicinity includes a state in which the separation roller is in contact with each of the fourth separation piece and the fifth separation piece.
  • the document separation mechanism may include an odd number of separation pieces including the first separation piece, the second separation piece, and the third separation piece as a whole of the document separation mechanism.
  • the same number of separation pieces can be arranged on both sides around the third separation piece. Accordingly, it is possible to perform document separation while preventing skew feeding.
  • the document separation mechanism further includes a first urging portion that urges the first separation piece toward the outer peripheral surface side of the separation roller, and the second separation piece toward the outer peripheral surface side of the separation roller.
  • a second urging portion that urges; and a third urging portion that urges the third separation piece toward the outer peripheral surface of the separation roller, and the first separation piece by the first urging portion.
  • a first urging direction of the second separating piece by the second urging portion, and a third urging direction of the third separating piece by the third separating portion are parallel to each other. It may be characterized by being in a different direction. According to this, the 1st separation piece, the 2nd separation piece, and the 3rd separation piece can be urged in parallel to the peripheral surface side of a separation roller.
  • FIG. 2B is a cross-sectional view taken along the line AA of FIG. 1A, showing an outline of the internal configuration of the scanner device and an enlarged view of a portion M shown in FIG. It is a perspective view which shows a document separation mechanism.
  • A) is a BB sectional view of FIG. 2, and
  • (b) is a CC sectional view of FIG.
  • FIG. 3 is a DD sectional view of FIG. 2. It is a figure which shows another original document separation mechanism.
  • the document separation mechanism 100 of this embodiment can be employed in a copier, a printer, a facsimile machine, or the like.
  • the document separation mechanism 100 can be employed in a scanner device 20 as shown in FIG.
  • the scanner device 20 having the document separation mechanism 100 will be described as an example.
  • the scanner device 20 has an appearance as shown in FIG. 1A.
  • the scanner device 20 has each configuration as shown in FIG. 1B.
  • the scanner device 20 includes a document separation mechanism 100, a paper feed tray 230, a line feed roller (hereinafter also referred to as LF roller) 240, image reading units 250A and 250B, a paper discharge roller 260, and a pinch roller (driven). Rollers) 270A and 270B, and a paper discharge tray 280.
  • a document (paper) 300 to be read is set on the paper feed tray 230.
  • a plurality of documents 300 are set on the sheet feed tray 230 in a state where they overlap each other.
  • the casing and the paper discharge tray 280 that configure the external appearance of the scanner device 20 are not shown.
  • the scanner device 20 includes a drive control unit that is not shown in FIGS. 1A and 1B.
  • the drive control unit detects the presence / absence of a sheet and the position of the leading edge during conveyance, and supplies a drive signal to a drive mechanism such as a motor that rotationally drives a rotation shaft 150 and the like described later.
  • the document separation mechanism 100 includes, for example, a first separation piece 104, a third separation piece 108, a housing 116, a first pressing plate 124, a third pressing plate 128, and a stay 160. A detailed description of each component will be described later.
  • the LF roller 240 conveys one document 300A separated and conveyed by a separation roller 102 included in the document separation mechanism 100 described later to the image reading units 250A and 250B.
  • the LF roller 240 is installed on one side of the conveyed document 300A.
  • the LF roller 240 is supported on the rotation shaft 242.
  • the pinch roller 270A is disposed to face the LF roller 240 on the other surface side of the conveyed document 300A.
  • the pinch roller 270A is supported by the rotation shaft 272A and rotates following the LF roller 240.
  • the conveyance direction is determined by the rotation direction of the separation roller 102. Note that the conveyance direction may not be determined by the separation roller 102.
  • the conveyance direction may be determined by another roller such as the LF roller 240.
  • the LF roller 240 and the pinch roller 270A sandwich the single document 300A separated and conveyed by the separation roller 102 and convey it to the image reading units 250A and 250B.
  • This conveyance is realized by rotating the rotating shaft 242 supporting the LF roller 240 by a rotation driving mechanism such as a motor in the state where the document 300A is held, and rotating the LF roller 240 accordingly.
  • the pinch roller 270A rotates following the LF roller 240.
  • the arrows in the LF roller 240 and the pinch roller 270A in FIG. 1B indicate the rotation directions of the LF roller 240 and the pinch roller 270A.
  • Image reading units 250A and 250B read an image recorded on document 300A conveyed by LF roller 240 and pinch roller 270A.
  • the image reading units 250A and 250B include, for example, a CIS (Contact Image Sensor).
  • a CCD ChargedCharCoupled Device
  • the image reading unit 250A is provided on the other surface side of the conveyed document 300A, and reads the other surface, for example, the front surface.
  • the image reading unit 250B is provided on one side of the conveyed document 300A, and reads one side, for example, the back side.
  • a double-sided reading function is realized by the image reading units 250A and 250B.
  • the paper discharge roller 260 conveys the single document 300A conveyed through the image reading units 250A and 250B to the paper discharge tray 280 installed on the downstream side in the conveyance direction.
  • the paper discharge roller 260 is installed on one side of the conveyed document 300A.
  • the paper discharge roller 260 is supported on the rotation shaft 262.
  • the pinch roller 270 ⁇ / b> B is disposed to face the paper discharge roller 260 on the other side of the conveyed document 300 ⁇ / b> A.
  • the pinch roller 270 ⁇ / b> B is supported by the rotation shaft 272 ⁇ / b> B and rotates following the paper discharge roller 260.
  • the paper discharge roller 260 and the pinch roller 270B sandwich the single document 300A conveyed through the image reading units 250A and 250B and convey it to the paper discharge tray 280 side.
  • This conveyance is realized by rotating the rotary shaft 262 supporting the paper discharge roller 260 by a rotation driving mechanism such as a motor and the paper discharge roller 260 in association with the document 300A.
  • the pinch roller 270 ⁇ / b> B rotates following the paper discharge roller 260.
  • the arrows in the paper discharge roller 260 and the pinch roller 270B in FIG. 1B indicate the rotation directions of the paper discharge roller 260 and the pinch roller 270B.
  • the paper discharge tray 280 is conveyed by the paper discharge roller 260 and the pinch roller 270B and receives the discharged original 300A. That is, the original 300A conveyed by the paper discharge roller 260 and the pinch roller 270B is discharged to the paper discharge tray 280. Thereby, the reading operation of the document 300A is completed.
  • originals 300 are set on the paper feed tray 230, originals 300 different from the original 300 ⁇ / b> A already conveyed by the original separation mechanism 100 are successively conveyed and recorded on the conveyed original 300. The image is read. Then, the paper is sequentially discharged to the paper discharge tray 280. The discharged document 300 is stacked on the discharge tray 280.
  • the scanner device 20 shown in FIG. 1A is in a state in which the paper discharge tray 280 is stored. In the scanner device 20, when the above-described reading operation is executed, the paper discharge tray 280 is pulled out in the pull-out direction shown in FIG. 1A and used in an extended state.
  • the document separation mechanism 100 shown in FIG. 1B will be described with reference to FIGS.
  • the document separating mechanism 100 is installed at a predetermined position with respect to the paper feed tray 230 as shown in FIG.
  • the document separation mechanism 100 is installed at a predetermined position on the downstream side in the transport direction. Specifically, the document separation mechanism 100 is disposed at the center in the width direction of the paper feed tray 230 along the axial direction of the rotation shaft 150 of the separation roller 102.
  • the document separation mechanism 100 includes a separation roller 102, a first separation piece 104, a second separation piece 106, and a third separation piece 108 shown in FIG.
  • FIG. 3A is a cross-sectional view taken along the line BB in FIG. FIG.
  • the document separating mechanism 100 includes a first urging unit 110 shown in FIG. 3A, a second urging unit 112 shown in FIG. 3B, and FIGS. 3A, 3B, and 4. And a third urging portion 114 shown.
  • the first separation piece 104, the second separation piece 106, and the third separation piece 108 are collectively referred to as separation pieces 104 to 108.
  • the first urging unit 110, the second urging unit 112, and the third urging unit 114 are also collectively referred to as urging units 110 to 114.
  • the separation roller 102 protrudes upward on the surface of the paper feed tray 230 so that a part of the outer peripheral surface of the separation roller 102 can come into contact with one side of the original 300A to be conveyed. is set up.
  • the separation roller 102 is installed on the same side as the LF roller 240 and the discharge roller 260 described above with respect to the conveyed document 300A.
  • the separating pieces 104 to 108 and the urging portions 110 to 114 are installed on the other surface side of the document 300A to be conveyed while being accommodated in the housing 116.
  • the separating pieces 104 to 108 and the urging units 110 to 114 are installed on the same side as the above-described pinch rollers 270A and 270B with respect to the conveyed document 300A.
  • the housing 116 accommodates the separation pieces 104 to 108 and the urging portions 110 to 114.
  • the separation roller 102 and the housing 116 are installed in a positional relationship facing each other with the paper feed tray 230 interposed therebetween.
  • the casing 116 is fixed by screwing or the like to a stay 160 fixed at a predetermined position inside the scanner device 20 so as to have such a positional relationship.
  • the separation roller 102 is supported on the rotating shaft 150.
  • the rotation shaft 150 is connected to a rotation drive mechanism such as a motor (not shown).
  • a rotation drive mechanism such as a motor (not shown).
  • the separation roller 102 is also rotated in the direction of the arrow described in the separation roller 102 in FIGS. 3 (a) and 3 (b).
  • the separation roller 102 separates the document 300 ⁇ / b> A from the document 300 set in a state where a plurality of sheets are overlapped on the sheet feeding tray 230.
  • the separation roller 102 conveys the separated document 300A in the direction determined by the rotation direction, that is, the conveyance direction. That is, the separation roller 102 conveys the document 300A to the LF roller 240 side.
  • the outer peripheral surface of the separation roller 102 is formed of rubber such as silicon rubber.
  • the separation pieces 104 to 108 are formed of an elastic member such as rubber.
  • One end portions of the separation pieces 104 to 108, that is, the respective front end portions of the separation pieces 104 to 108 are arranged close to the outer peripheral surface of the separation roller 102.
  • the tip portions of the separation pieces 104 to 108 are arranged in a state of being pressed against the outer peripheral surface of the separation roller 102.
  • Separation pieces 104 to 108 separate document 300B attached to document 300A conveyed by separation roller 102 from document 300A. This is a document on the other surface side different from the surface where the separation roller 102 and the document 300A are in contact with each other. That is, the document 300B is a document that is separated by the document separation mechanism 100 after the document 300A is separated.
  • the close state includes a contacted state.
  • the first urging unit 110 urges the first separation piece 104 toward the outer peripheral surface side of the separation roller 102.
  • the second urging unit 112 urges the second separation piece 106 toward the outer peripheral surface of the separation roller 102.
  • the third urging unit 114 urges the third separation piece 108 toward the outer peripheral surface side of the separation roller 102.
  • the first urging unit 110 includes a first urging member 118 and a first pressing plate 124.
  • the second urging unit 112 includes a second urging member 120 and a second pressing plate 126.
  • the third urging unit 114 includes a third urging member 122 and a third pressing plate 128.
  • first urging member 118, the second urging member 120, and the third urging member 122 are collectively referred to as urging members 118 to 122.
  • the first pressing plate 124, the second pressing plate 126, and the third pressing plate 128 are also collectively referred to as pressing plates 124 to 128.
  • the urging members 118 to 122 are formed by, for example, coil springs.
  • the urging members 118 to 122 are compressed to generate an urging force.
  • the pressing plates 124 to 128 are made of, for example, a resin having a predetermined rigidity.
  • the pressing plates 124 to 128 transmit the urging force of the urging members 118 to 122 to the separation pieces 104 to 108. Details of the urging of the separation pieces 104 to 108 by the urging portions 110 to 114 realized by the urging members 118 to 122 and the pressing plates 124 to 128 will be described later.
  • One original 300A separated by the separation roller 102 and the separation pieces 104 to 108 urged toward the outer peripheral surface of the separation roller 102 by the urging portions 110 to 114 is separated into the separation roller 102 and the separation pieces 104 to 108. Pass between. Then, the document 300A is conveyed to the LF roller 240 side according to the rotation of the separation roller 102 as described above.
  • the positions where the front ends of the separation pieces 104 to 108 and the outer peripheral surface of the separation roller 102 are arranged close to each other separate the original 300A conveyed by the separation roller 102 from the original 300B attached to the original 300A.
  • This is the separation position.
  • the position where the first separation piece 104 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a first separation position P1 shown in FIG.
  • the position where the second separation piece 106 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a second separation position P2 shown in FIG. 3B and FIG.
  • a position where the third separation piece 108 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a third separation position P3 shown in FIGS. 3A and 3B and FIG.
  • the first separation position P1, the second separation position P2, and the third separation position P3 are indicated by black circles, respectively.
  • the third separation piece 108 is disposed at a position including the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102. Therefore, the third separation position P ⁇ b> 3 is arranged so as to include the center of the outer peripheral surface of the separation roller 102 in the direction of the separation roller width W, that is, the direction that coincides with the axial direction of the rotation shaft 150.
  • the first separation piece 104 and the second separation piece 106 are located at a predetermined distance on the outer peripheral surface of the separation roller 102 from the position where the third separation piece 108 is arranged along the axial direction of the rotation shaft 150.
  • the first separation piece 104 is disposed on one end side in the axial direction of the rotation shaft 150.
  • the second separation piece 106 is disposed on the other end side in the axial direction of the rotation shaft 150. Therefore, the first separation position P1 is one end in the direction of the separation roller width W on the one end side of the separation roller 102, that is, the outer peripheral surface of the separation roller 102, along the axial center direction of the rotation shaft 150 from the third separation position P3. It is arranged at a position to be on the side.
  • the second separation position P2 is located at the other end side of the separation roller 102, that is, the other end in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102 along the axial center direction of the rotation shaft 150 from the third separation position P3. It is arranged at a position to be on the side.
  • the first separation piece 104 and the second separation piece 106 are arranged symmetrically around a straight line in the conveyance direction passing through the third separation position P3. Therefore, the first separation position P1 and the second separation position P2 have a symmetrical positional relationship with respect to a straight line in the transport direction passing through the third separation position P3. Both the first separation position P1 and the second separation position P2 are on the virtual straight line L1 shown in FIG.
  • the virtual straight line L1 is a straight line along the rotation axis 150 of the separation roller 102.
  • the virtual straight line L ⁇ b> 1 is a straight line parallel to the rotation shaft 150 of the separation roller 102.
  • first separation piece 104 and the second separation piece 106 are arranged on the upstream side in the conveyance direction of the document 300A as compared with the third separation piece 108.
  • the first separation position P1 and the second separation position P2 are arranged on the upstream side in the transport direction of the document 300A compared to the third separation position P3.
  • the third separation piece 108 is disposed on the downstream side in the conveyance direction of the original 300 ⁇ / b> A compared to the first separation piece 104 and the second separation piece 106.
  • the third separation position P3 is disposed on the downstream side in the conveyance direction of the document 300A compared to the first separation position P1 and the second separation position P2.
  • the separation pieces 104 to 108 and the urging portions 110 to 114 are accommodated in the casing 116 in the state as shown in FIGS. 3 (a), 3 (b) and FIG.
  • the housing 116 is formed with six accommodating portions 130 to 140.
  • the arrangement of the six accommodating portions 130 to 140 is a position according to the positional relationship of the separation pieces 104 to 108 described above.
  • the accommodating part 130 is a concave space for accommodating the first separation piece 104 as shown in FIG.
  • the accommodating portion 132 is a concave space that accommodates the first urging member 118 and the first pressing plate 124 that constitute the first urging portion 110.
  • the accommodating portions 130 and 132 are formed side by side with respect to the transport direction. Specifically, the storage unit 130 is formed on the rear side in the transport direction with respect to the storage unit 132, that is, on the upstream side in the transport direction. In other words, the storage portion 132 is formed on the downstream side in the transport direction with respect to the storage portion 130.
  • the tip portion that is one end portion of the first separation piece 104 protrudes toward the outer peripheral surface side of the separation roller 102.
  • the tip of the first separation piece 104 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
  • the first urging member 118 is first disposed on the bottom side of the accommodating portion 132.
  • the first pressing plate 124 is accommodated in the accommodating portion 132 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102.
  • the protruding front end portion of the first pressing plate 124 is in contact with the front end portion of the first separation piece 104 bent toward the downstream side in the transport direction.
  • the first urging member 118 installed at the bottom of the housing portion 132 is compressed between the rear end portion, which is the other end portion of the first pressing plate 124 in the above-described state, and the bottom portion of the housing portion 132.
  • the bottom portion of the storage portion 132 is a surface on which the first biasing member 118 and the storage portion 132 are in contact.
  • the first urging member 118 in the compressed state urges the first pressing plate 124. Accordingly, the first separation piece 104 in contact with the first pressing plate 124 is urged by the urging force of the first urging member 118 and is pressed toward the outer peripheral surface side of the separation roller 102.
  • the accommodating part 134 is a concave space for accommodating the second separation piece 106 as shown in FIG.
  • the accommodating portion 136 is a concave space that accommodates the second urging member 120 and the second pressing plate 126 that constitute the second urging portion 112.
  • the accommodating parts 134 and 136 are formed side by side with respect to the transport direction. Specifically, the storage unit 134 is formed on the rear side in the transport direction with respect to the storage unit 136, that is, on the upstream side in the transport direction. In other words, the storage unit 136 is formed on the downstream side in the transport direction with respect to the storage unit 134.
  • the tip portion that is one end portion of the second separation piece 106 protrudes toward the outer peripheral surface side of the separation roller 102.
  • the tip of the second separation piece 106 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
  • the second urging member 120 is first disposed on the bottom side of the accommodating portion 136.
  • the second pressing plate 126 is accommodated in the accommodating portion 136 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102.
  • the bottom part of the accommodating part 136 is a surface where the second urging member 120 and the accommodating part 136 are in contact.
  • the protruding tip of the second pressing plate 126 is in contact with the tip of the second separation piece 106 bent toward the downstream side in the transport direction.
  • the second urging member 120 installed at the bottom of the housing portion 136 is compressed between the rear end portion that is the other end portion of the second pressing plate 126 in the above-described state and the bottom portion of the housing portion 136.
  • the second urging member 120 in the compressed state urges the second pressing plate 126. Therefore, the second separation piece 106 in contact with the second pressing plate 126 is urged by the urging force of the second urging member 120 and is pressed toward the outer peripheral surface side of the separation roller 102.
  • the accommodating portion 138 is a concave space that accommodates the third separation piece 108.
  • the accommodating portion 140 is a concave space that accommodates the third urging member 122 and the third pressing plate 128 that constitute the third urging portion 114.
  • the accommodating portions 138 and 140 are formed side by side with respect to the transport direction. Specifically, the storage unit 138 is formed on the rear side in the transport direction with respect to the storage unit 140, that is, on the upstream side in the transport direction. In other words, the storage unit 140 is formed on the downstream side in the transport direction with respect to the storage unit 138.
  • the tip portion that is one end portion of the third separation piece 108 protrudes toward the outer peripheral surface side of the separation roller 102.
  • the tip of the third separation piece 108 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
  • the third urging member 122 is disposed on the bottom side of the accommodating portion 140.
  • the third pressing plate 128 is accommodated in the accommodating portion 140 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102.
  • the protruding tip of the third pressing plate 128 is in contact with the tip of the third separation piece 108 bent toward the downstream side in the transport direction.
  • the third urging member 122 installed at the bottom of the housing part 140 is compressed between the rear end part which is the other end part of the third pressing plate 128 in the above-described state and the bottom part of the housing part 140.
  • the third urging member 122 in the compressed state urges the third pressing plate 128. Therefore, the third separation piece 108 in contact with the third pressing plate 128 is urged by the urging force of the third urging member 122 and is pressed toward the outer peripheral surface side of the separation roller 102.
  • the accommodating portion 132 and the accommodating portion 140 are formed in parallel in the housing 116.
  • the housing portion 136 and the housing portion 140 are also formed in parallel in the housing 116. That is, the accommodating portions 132, 136, and 140 in which the urging portions 110 to 114 are accommodated are formed in the casing 116 so as to be parallel to each other. Therefore, the urging portions 110 to 114 accommodated in the accommodating portions 132, 136 and 140 parallel to each other are also parallel.
  • the first biasing direction of the first biasing portion 110 based on the biasing force of the first biasing member 118 and the second biasing direction of the second biasing portion 112 based on the biasing force of the second biasing member 120.
  • the third urging direction of the third urging unit 114 based on the urging force of the third urging member 122 are parallel to each other.
  • the separating pieces 104 to 108 are urged in a direction parallel to the outer peripheral surface side of the separating roller 102.
  • the accommodating portions 130, 134, and 138 in which the separation pieces 104 to 108 are accommodated may also be formed so as to be parallel to each other in the housing 116. Further, the accommodating portions 130 to 140 may be formed so as to be parallel to each other.
  • the first separation position P1, the second separation position P2, and the third separation position are set such that the third separation position P3 is on the downstream side in the conveyance direction.
  • the first separation piece 104, the second separation piece 106, and the third separation piece 108 are arranged so that the position P3 is arranged in a substantially V shape or a substantially U shape.
  • the separation operation is performed at two points of the first separation piece 104 and the second separation piece 106 arranged on both ends in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102, that is, the first separation position P1 and the second separation position. It starts in a state of being pressed at the separation position P2. Therefore, the document separation mechanism 100 can suppress the rotation of the document 300A and prevent the skew of the document 300A due to the separation operation. The document separating mechanism 100 can prevent document jamming.
  • the first separation position P1, the second separation position P2, and the third separation position P3 are substantially V-shaped or substantially U-shaped so that the third separation position P3 is on the downstream side in the transport direction.
  • the first separation piece 104, the second separation piece 106, and the third separation piece 108 were arranged so as to be arranged in a letter shape. Accordingly, at least two separation points of the conveyed document 300A are the first separation point separated at the first separation position P1 and the second separation position P2, and the second separation point separated at the third separation position. Two separation points are formed.
  • the separation point is Only one location is provided.
  • a predetermined region is provided along the conveyance direction between the first separation point and the second separation point. For this reason, even if the original is not separated at the first separation point, the original can be separated again at the second separation point, so that the original separation mechanism 100 prevents skewing and the separation accuracy of the original. Can be increased.
  • the document separation mechanism 100 of the present embodiment may be configured as follows. That is, in the above, the accommodating parts 132, 136, and 140 are formed in parallel in the casing 116 so that the first urging direction, the second urging direction, and the third urging direction are parallel to each other.
  • the document separation mechanism 100 of the present embodiment is not limited to such a configuration.
  • the first separation position P1, the second separation position P2, and the third separation position P3 are substantially V-shaped or substantially U-shaped so that the third separation position P3 is on the downstream side in the transport direction.
  • the first separation piece 104, the second separation piece 106, and the third separation piece 108 are arranged so as to be arranged in a shape. And the advantageous effect mentioned above is acquired by such arrangement
  • the document separation mechanism 100 having the first separation piece 104, the second separation piece 106, and the third separation piece 108 has been described as an example.
  • the number of separation pieces included in the document separation mechanism may be other than this as long as it is an odd number of 3 or more.
  • the number of separation pieces provided in the document separation mechanism may be an even number.
  • five separation pieces may be used like a document separation mechanism 500 as shown in FIG.
  • the same components as those described above or below will be described with the same reference numerals. The description of the same configuration as above is omitted.
  • the document separation mechanism 500 includes a first separation piece 104, a second separation piece 106, and a third separation piece 108, and a fourth separation piece 510 and a fifth separation piece 512.
  • the configuration and positional relationship of the first separation piece 104, the second separation piece 106, and the third separation piece 108 are the same as those of the document separation mechanism 100.
  • the fourth separation piece 510 and the fifth separation piece 512 are formed of an elastic member such as rubber.
  • the fourth separation piece 510 and the fifth separation piece 512 are arranged such that respective tip portions which are one end portions thereof are close to the outer peripheral surface of the separation roller 102.
  • the tip portions of the fourth separation piece 510 and the fifth separation piece 512 are arranged in a state of being pressed against the outer peripheral surface of the separation roller 102.
  • the fourth separation piece 510 and the fifth separation piece 512 separate the document 300B attached to the document 300A conveyed by the separation roller 102 from the document 300A.
  • the close state includes a contact state.
  • the fourth separation piece 510 is disposed on one end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102 from the first separation piece 104.
  • the fifth separation piece 512 is disposed on the other end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102 from the second separation piece 106. Therefore, the fourth separation position of the document 300B attached to the document 300A by the fourth separation piece 510 is one end side of the separation roller 102, that is, the separation roller along the axial center direction of the rotation shaft 150 from the first separation position P1. It is arranged on one end side in the direction of the separation roller width W on the outer peripheral surface of 102.
  • the fifth separation position of the document 300B attached to the document 300A by the fifth separation piece 512 is the other end side of the separation roller 102, that is, the separation roller 102 along the axial direction of the rotation shaft 150 from the second separation position P2. Is disposed on the other end side in the direction of the separation roller width W on the outer peripheral surface of the outer peripheral surface.
  • the fourth separation piece 510 and the fifth separation piece 512 are arranged symmetrically with respect to the straight line in the conveyance direction across the third separation position P3. Accordingly, the fourth separation position and the fifth separation position are symmetrical with respect to a straight line in the transport direction passing through the third separation position P3.
  • the first separation position P1 and the second separation position P2 are both on the virtual straight line L1 shown in FIG.
  • the virtual straight line L1 is a straight line along the rotation shaft 150 of the separation roller 102 as in the case of FIG.
  • the virtual straight line L ⁇ b> 1 is a straight line parallel to the rotation shaft 150 of the separation roller 102.
  • the fourth separation position and the fifth separation position are on the virtual straight line L2 shown in FIG.
  • the virtual straight line L2 is a straight line on the upstream side in the transport direction along or parallel to the virtual straight line L1.
  • the fourth separation piece 510 and the fifth separation piece 512 are arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation piece 108. Therefore, the fourth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation position P3. Further, the fifth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation position P3. In other words, the third separation piece 108 is disposed on the downstream side in the conveyance direction of the document 300A compared to the fourth separation piece 510 and the fifth separation piece 512. The third separation position P3 is arranged on the downstream side in the conveyance direction of the document 300A compared to the fourth separation position and the fifth separation position.
  • the fourth separation piece 510 is arranged on the upstream side in the conveyance direction of the original 300 ⁇ / b> A compared to the first separation piece 104. Therefore, the fourth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the first separation position P1. Further, the fifth separation piece 512 is arranged on the upstream side in the conveyance direction of the document 300 ⁇ / b> A compared to the second separation piece 106. Therefore, the fifth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the second separation position P2.
  • first separation piece 104, the second separation piece 106, and the fourth separation position so that the first separation position P1, the second separation position P2, the fourth separation position, and the fifth separation position are on the virtual straight line L1.
  • the separation piece 510 and the fifth separation piece 512 may be arranged.
  • the document separating mechanism 500 has a fourth urging unit and a fifth urging unit in addition to the first urging unit 110, the second urging unit 112, and the third urging unit 114.
  • the fourth urging unit urges the fourth separation piece 510 toward the outer peripheral surface of the separation roller 102.
  • the fifth urging unit urges the fifth separation piece 512 toward the outer peripheral surface of the separation roller 102.
  • the fourth urging unit includes a fourth urging member (not shown in FIG. 5) and a fourth pressing plate 514.
  • the fifth urging unit includes a fifth urging member (not shown in FIG. 5) and a fifth pressing plate 516, like the second urging unit 112.
  • the housing of the fourth urging member and the fourth pressing plate 514 constituting the fourth urging unit in the housing 116 is performed in the same manner as the first urging unit 110 and the like.
  • the fifth urging member constituting the fifth urging unit and the fifth pressing plate 516 are accommodated in the housing 116 in the same manner as the second urging unit 112 and the like.
  • the urging of the fourth separation piece 510 by the fourth urging unit is performed in the same manner as the urging of the first separation piece 104 by the first urging unit 110.
  • the urging of the fifth separation piece 512 by the fifth urging unit is performed in the same manner as the urging of the second separation piece 106 by the second urging unit 112.
  • the housing 116 has storage portions for storing the fourth separation piece 510, the fourth urging portion, the fifth separation piece 512, and the fifth urging portion at predetermined positions.
  • the urging directions by the first urging unit 110, the second urging unit 112, the third urging unit 114, the fourth urging unit, and the fifth urging unit are set in the same manner as in the case of the document separation mechanism 100, for example. You can also.
  • the separation positions can be arranged in the following positional relationship. That is, in the document separation mechanism 100, the third separation position P3 is disposed so as to include the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102.
  • the third separation position P3 by the third separation piece 108 may be a position that does not include the center in the direction of the separation roller width W.
  • the first separation position P1 is closer to the one end side of the separation roller 102 along the axial direction of the rotation shaft 150 than the third separation position P3. It is arranged at such a position.
  • the second separation position P2 is disposed at a position on the other end side of the separation roller 102 along the axial center direction of the rotation shaft 150 from the third separation position P3.
  • the third separation piece 108 is arranged corresponding to a position not including the center in the direction of the separation roller width W.
  • the first separation piece 104 is disposed on one end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102, and the second separation piece 106 is disposed on the other end side.
  • the separation position is between the first separation position P1 and the second separation position P2 that are arranged on the upstream side in the transport direction of the document 300A compared to the third separation position P3.
  • a configuration may be adopted in which separation pieces are arranged so that a new separation position is formed between them.
  • three or more separation positions including the first separation position P1 and the second separation position P2 are arranged on the virtual straight line L1.
  • a total of six separation positions including the third separation position P3 are arranged. Is done.
  • a separation piece may be arranged so that a new separation position is formed between the fourth separation position and the fifth separation position.
  • three or more separation positions including the fourth separation position and the fifth separation position are arranged on the virtual straight line L2.
  • a total of four separation positions including the third separation position P3 are arranged.
  • three or more separation positions including the first separation position P1 and the second separation position P2 are arranged on the virtual straight line L1, and further, on the virtual straight line L2, the first separation position P1 is arranged.
  • a configuration may be adopted in which three or more separation positions including the four separation positions and the fifth separation position are arranged.
  • the third separation position P3 by the third separation piece 108 is the same as the document separation mechanism including the document separation mechanisms 100 and 500 described above.
  • the first separation piece 104 is disposed on one end side of the separation roller 102 along the axial direction of the rotation shaft 150 from the fourth separation piece 510.
  • the second separation piece 106 may be arranged on the other end side of the separation roller 102 along the axial center direction of the rotation shaft 150 from the fifth separation piece 512. Even in such a case, a new separation position is disposed between the first separation position P1 and the second separation position P2, and a new separation position is disposed between the fourth separation position and the fifth separation position. You may arrange.
  • the first separation position P1, the second separation position P2, and three new separation positions are arranged on the virtual straight line L1, and the fourth separation position, the fifth separation position, and one new separation position are arranged on the virtual straight line L2.
  • a total of nine separation positions including the third separation position P3 are arranged.
  • the third separation position P3 by the third separation piece 108 is the same as that of the document separation mechanism 500. That is, the number of separation positions arranged on one straight line along or parallel to the rotation shaft 150 of the separation roller 102 on the upstream side in the transport direction as compared with the third separation position P3 is equal to the third separation position P3. As long as it is more than the number of.
  • two separation pieces are arranged so that a plurality of, for example, two separation positions are formed on one straight line along or parallel to the rotation axis 150 of the separation roller 102. And it is good also as a structure which has arrange
  • the separation position arranged on one end side in the axial direction of the rotating shaft 150 is on the same straight line than the separation position arranged on the one end side.
  • the separation roller 102 is disposed on one end side along the axial direction of the rotation shaft 150. Further, among the separation positions arranged on the other straight line, the separation position arranged on the other end side in the axial direction of the rotating shaft 150 is more than the separation position arranged on the other end side on one straight line, It is arranged on the other end side of the separation roller 102 along the axial direction of the rotation shaft 150.
  • two separation positions arranged on one straight line sandwich a straight line in the conveyance direction passing through the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102, and center on this straight line in the conveyance direction. They are arranged symmetrically. Moreover, any one may be arrange
  • the document separation mechanism formed at the end along the rotation shaft 150 is located at the separation position located upstream in the conveyance direction than the separation position located downstream in the conveyance direction. If it is, the effect of this embodiment can be acquired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

A novel document separation mechanism which can satisfactorily separate a single document from stacked documents and convey the document without causing the document to move obliquely. A document separation mechanism (100) has a separation roller (102), a first separation piece (104), a second separation piece (106), and a third separation piece (108). A first separation position at which a document adhering to a document separated by the separation roller (102) is separated by the first separation piece (104) is disposed on the upstream side of a third separation position in the document conveyance direction at a position closer to one end side of the outer peripheral surface of the separation roller (102) in the direction of the width (W) of the separation roller than the third separation position, the third separation position being a position at which the adhering document is separated by the third separation piece (108). A second separation position at which the document adhering to the document separated by the separation roller (102) is separated by the second separation piece (106) is disposed on the upstream side of the third separation position in the conveyance direction at a position closer to the other end side of the outer peripheral surface of the separation roller (102) in the direction of the width (W) of the separation roller than the third separation position.

Description

原稿分離機構Document separation mechanism
 本発明は、複数枚重なり合った原稿から一枚の原稿を分離し、搬送する原稿分離機構に関するものである。 The present invention relates to a document separation mechanism that separates and transports a single document from a plurality of stacked documents.
 例えば、特許文献1に参照されるように、シート搬送方向に前後に並べてピックアップローラと給紙ローラを配置した給紙装置に関する提案がなされている。特許文献1の給紙装置では、複数のブレードがシート搬送方向に前後に並べられて、給紙ローラに押し当てられる。それら各ブレードは、保持部材に所定の支点を中心として回動自在に支持して設けられる。また、各ブレードは、バネ付勢してその先端エッジのそれぞれが給紙ローラに押し当てて設けられる。 For example, as referred to in Patent Document 1, there has been proposed a paper feeding device in which a pickup roller and a paper feeding roller are arranged side by side in the sheet conveyance direction. In the paper feeder disclosed in Patent Document 1, a plurality of blades are arranged back and forth in the sheet conveying direction and pressed against a paper feed roller. Each of these blades is provided on a holding member so as to be rotatable about a predetermined fulcrum. Each blade is provided with a spring biased so that each of its leading edges presses against the paper feed roller.
特開平5-254684号公報Japanese Patent Laid-Open No. 5-254684
 ところで、原稿を分離し搬送するに際し、搬送される原稿が斜行すると、好適な原稿の搬送が実現されなくなる。例えば、搬送途中に原稿詰まりが発生する原因となる。特許文献1のような構成によれば、複数のブレード、すなわち搬送される原稿に付着した他の原稿を、搬送される原稿から分離する分離片が、搬送方向に前後に並べて設置されている。そのため、搬送される原稿が回転しやすくなり、各位置での分離に起因して斜行が生じるおそれがある。別途これに対する対策が必要になると想定される。 By the way, when the document is separated and transported, if the transported document is skewed, a suitable document transport cannot be realized. For example, this may cause a document jam during the conveyance. According to the configuration disclosed in Patent Document 1, a plurality of blades, that is, separation pieces that separate other documents attached to the conveyed document from the conveyed document are arranged side by side in the conveyance direction. As a result, the conveyed document is likely to rotate, and skewing may occur due to separation at each position. It is assumed that separate countermeasures will be required.
 本発明は、複数枚重なり合った原稿から一枚の原稿を好適に分離し、斜行することなく搬送することが可能な新たな原稿分離機構を提供することを目的とする。 It is an object of the present invention to provide a new document separation mechanism that can suitably separate a document from a plurality of documents that overlap each other and transport the document without skew.
 上記従来の課題に鑑みなされた本発明の一側面は、複数枚重なり合った原稿から一枚の原稿を分離し、搬送する原稿分離機構であって、複数枚重なり合った原稿から第1原稿を分離する分離ローラと、先端部が前記分離ローラの外周面に近接して配置され、前記分離ローラによって搬送される前記第1原稿に付着した第2原稿を、前記第1原稿から分離する、第1分離片、第2分離片および第3分離片とを有し、前記第1分離片による前記第2原稿の第1分離位置は、前記第3分離片による前記第2原稿の第3分離位置と比較して、前記第1原稿の搬送方向の上流側で、かつ前記第3分離位置より、前記分離ローラの外周面における分離ローラ幅方向の一端側に配置され、前記第2分離片による前記第2原稿の第2分離位置は、前記第3分離位置と比較して、前記搬送方向の上流側で、かつ前記第3分離位置より前記分離ローラ幅方向の他端側に配置されていることを特徴とする原稿分離機構である。 One aspect of the present invention made in view of the above-described conventional problems is a document separation mechanism that separates and transports a single document from a plurality of stacked documents, and separates a first document from a plurality of stacked documents. A separation roller and a first separation member, the front end portion of which is arranged close to the outer peripheral surface of the separation roller, and separates the second document attached to the first document conveyed by the separation roller from the first document. And a first separation position of the second document by the first separation piece is compared with a third separation position of the second document by the third separation piece. The second separation piece is disposed on the upstream side in the conveyance direction of the first original and on the one end side in the separation roller width direction on the outer circumferential surface of the separation roller from the third separation position. The second separation position of the document is the third separation position. Compared with the position on the upstream side in the transport direction, and a document separating mechanism characterized by being positioned at the other end of the third separation the separation roller width direction from the position.
 これによれば、第1原稿を好適に分離し、分離された第1原稿が斜行することを防止することができる。なお、分離ローラの外周面に近接して配置される第1分離片、第2分離片および第3分離片について、分離ローラと、第1分離片、第2分離片および第3分離片それぞれとが近くにある状態を意味し、この近くにある状態には、分離ローラと、第1分離片、第2分離片および第3分離片のそれぞれとが接触している状態が含まれる。 According to this, it is possible to suitably separate the first document and prevent the separated first document from being skewed. For the first separation piece, the second separation piece, and the third separation piece that are disposed close to the outer peripheral surface of the separation roller, the separation roller, the first separation piece, the second separation piece, and the third separation piece, respectively Means that the separation roller is in contact with each of the first separation piece, the second separation piece, and the third separation piece.
 この原稿分離機構は、次のような構成とすることもできる。すなわち、前記第3分離位置は、前記分離ローラ幅方向の中心を含むように配置されていることを特徴としてもよい。これによれば、第3分離片による第1原稿からの第2原稿の分離を、分離ローラの外周面における分離ローラ幅方向の中心を含む位置で行うようにすることができる。 This document separation mechanism can be configured as follows. That is, the third separation position may be arranged so as to include the center in the width direction of the separation roller. According to this, the separation of the second document from the first document by the third separation piece can be performed at a position including the center in the separation roller width direction on the outer peripheral surface of the separation roller.
 また、前記第1分離位置および前記第2分離位置それぞれは、前記分離ローラの回転軸に沿った仮想直線上にあることを特徴としてもよい。これによれば、第1分離位置での第1分離片による第1原稿からの第2原稿の分離と、第2分離位置での第2分離片による第1原稿からの第2原稿の分離とを同様のタイミングで開始させることができる。 Further, each of the first separation position and the second separation position may be on an imaginary straight line along a rotation axis of the separation roller. According to this, the separation of the second document from the first document by the first separation piece at the first separation position, and the separation of the second document from the first document by the second separation piece at the second separation position, Can be started at the same timing.
 また、前記第1分離位置および前記第2分離位置それぞれは、前記分離ローラの回転軸に対して平行な前記仮想直線上にあることを特徴としてもよい。これによれば、第1分離位置での第1分離片による第1原稿からの第2原稿の分離と、第2分離位置での第2分離片による第1原稿からの第2原稿の分離とを同じタイミングで開始させることができる。従って、斜行を防止しつつ、原稿分離を行うことができる。 Further, each of the first separation position and the second separation position may be on the imaginary straight line parallel to the rotation axis of the separation roller. According to this, the separation of the second document from the first document by the first separation piece at the first separation position, and the separation of the second document from the first document by the second separation piece at the second separation position, Can be started at the same time. Accordingly, it is possible to perform document separation while preventing skew feeding.
 また、前記原稿分離機構は、さらに、先端部が前記分離ローラの外周面に近接して配置され、前記分離ローラによって搬送される前記第1原稿に付着した前記第2原稿を、前記第1原稿から分離する、第4分離片および第5分離片を有し、前記第4分離片による前記第2原稿の第4分離位置は、前記第1分離位置より前記搬送方向の上流側で、かつ前記第1分離位置より前記分離ローラ幅方向の一端側に配置され、前記第5分離片による前記第2原稿の第5分離位置は、前記第2分離位置より前記搬送方向の上流側で、かつ前記第2分離位置より前記分離ローラ幅方向の他端側に配置されていることを特徴としてもよい。これによれば、さらに第1原稿を好適に分離し、分離された第1原稿が斜行することを防止することができる。なお、分離ローラの外周面に近接して配置される第4分離片および第5分離片について、分離ローラと、第4分離片および第5分離片それぞれとが近くにある状態を意味し、この近くにある状態には、分離ローラと、第4分離片および第5分離片それぞれとが接触している状態が含まれる。 Further, the document separating mechanism further includes a second document that is disposed at a front end portion adjacent to the outer peripheral surface of the separation roller and attached to the first document conveyed by the separation roller. And a fourth separation position of the second document by the fourth separation piece is upstream of the first separation position in the transport direction, and the fourth separation piece is separated from the first separation position. The fifth separation position of the second document by the fifth separation piece is disposed on one end side in the separation roller width direction from the first separation position, and is located upstream of the second separation position in the transport direction, and It may be arranged on the other end side in the width direction of the separation roller from the second separation position. According to this, the first document can be further preferably separated, and the separated first document can be prevented from skewing. In addition, about the 4th separation piece and the 5th separation piece arrange | positioned close to the outer peripheral surface of a separation roller, it means the state where a separation roller and each of the 4th separation piece and the 5th separation piece are near, The state in the vicinity includes a state in which the separation roller is in contact with each of the fourth separation piece and the fifth separation piece.
 また、前記原稿分離機構は、前記第1分離片と前記第2分離片と前記第3分離片とを含む分離片を原稿分離機構全体として奇数個有することを特徴としてもよい。第3分離片を中心として両側に同数の分離片を配置することができる。従って、斜行を防止しつつ、原稿分離を行うことができる。 The document separation mechanism may include an odd number of separation pieces including the first separation piece, the second separation piece, and the third separation piece as a whole of the document separation mechanism. The same number of separation pieces can be arranged on both sides around the third separation piece. Accordingly, it is possible to perform document separation while preventing skew feeding.
 また、前記原稿分離機構は、さらに、前記第1分離片を、前記分離ローラの外周面側に付勢する第1付勢部と、前記第2分離片を、前記分離ローラの外周面側に付勢する第2付勢部と、前記第3分離片を、前記分離ローラの外周面側に付勢する第3付勢部とを有し、前記第1付勢部による前記第1分離片の第1付勢方向と、前記第2付勢部による前記第2分離片の第2付勢方向と、前記第3分離部による前記第3分離片の第3付勢方向とは、互いに平行な方向であることを特徴としてもよい。これによれば、第1分離片と第2分離片と第3分離片とを、分離ローラの外周面側に平行に付勢することができる。 The document separation mechanism further includes a first urging portion that urges the first separation piece toward the outer peripheral surface side of the separation roller, and the second separation piece toward the outer peripheral surface side of the separation roller. A second urging portion that urges; and a third urging portion that urges the third separation piece toward the outer peripheral surface of the separation roller, and the first separation piece by the first urging portion. A first urging direction of the second separating piece by the second urging portion, and a third urging direction of the third separating piece by the third separating portion are parallel to each other. It may be characterized by being in a different direction. According to this, the 1st separation piece, the 2nd separation piece, and the 3rd separation piece can be urged in parallel to the peripheral surface side of a separation roller.
 本発明によれば、複数枚重なり合った原稿から一枚の原稿を好適に分離し、斜行することなく搬送することが可能な新たな原稿分離機構を得ることができる。 According to the present invention, it is possible to obtain a new document separation mechanism that can suitably separate a single document from a plurality of stacked documents and transport the document without skew.
スキャナ装置の外観を示す図である。It is a figure which shows the external appearance of a scanner apparatus. 図1AのA-A断面図であってスキャナ装置の内部構成の概略および図1Bに示すM部拡大図である。FIG. 2B is a cross-sectional view taken along the line AA of FIG. 1A, showing an outline of the internal configuration of the scanner device and an enlarged view of a portion M shown in FIG. 原稿分離機構を示す斜視図である。It is a perspective view which shows a document separation mechanism. (a)は図2のB-B断面図であり、(b)は図2のC-C断面図である。(A) is a BB sectional view of FIG. 2, and (b) is a CC sectional view of FIG. 図2のD-D断面図である。FIG. 3 is a DD sectional view of FIG. 2. 他の原稿分離機構を示す図である。It is a figure which shows another original document separation mechanism.
 本発明を実施するための実施形態について、図面を用いて以下に詳細に説明する。本発明は、以下に記載の構成に限定されるものではなく、同一の技術的思想において種々の構成を採用することができる。例えば、以下に示す構成の一部は、省略しまたは他の構成などに置換してもよい。また、他の構成を含むようにしてもよい。 Embodiments for carrying out the present invention will be described below in detail with reference to the drawings. The present invention is not limited to the configurations described below, and various configurations can be employed in the same technical idea. For example, some of the configurations described below may be omitted or replaced with other configurations. Moreover, you may make it include another structure.
 本実施形態の原稿分離機構100は、コピー機、プリンタまたはファクシミリ装置などに採用することができる。また、原稿分離機構100は、図1に示すようなスキャナ装置20に採用することができる。以下、原稿分離機構100を有するスキャナ装置20を例に説明する。 The document separation mechanism 100 of this embodiment can be employed in a copier, a printer, a facsimile machine, or the like. The document separation mechanism 100 can be employed in a scanner device 20 as shown in FIG. Hereinafter, the scanner device 20 having the document separation mechanism 100 will be described as an example.
 スキャナ装置20は、図1Aに示すような外観を有する。そして、スキャナ装置20は、その内部に図1Bのような各構成を有する。スキャナ装置20は、原稿分離機構100と、給紙トレイ230と、ラインフィードローラ(以下、LFローラともいう。)240と、画像読取部250A,250Bと、排紙ローラ260と、ピンチローラ(従動ローラ)270A,270Bと、排紙トレイ280とを備える。給紙トレイ230には、読取対象の原稿(用紙)300がセットされる。給紙トレイ230には、例えば、原稿300が複数枚重なり合った状態でセットされる。なお、図1では、スキャナ装置20の外観を構成する筐体および排紙トレイ280などの図示を省略している。また、スキャナ装置20は、図1A、図1Bにおいて図示を省略している駆動制御部を備える。駆動制御部は、用紙の有無や搬送時の先端位置を検出し、後述する回転軸150他を回転駆動させるモータなどの駆動機構に駆動信号を供給する。原稿分離機構100は、例えば、第1分離片104と、第3分離片108と、筐体116と、第1押圧板124と、第3押圧板128と、ステー160とを含む。各構成の詳細な説明は後述する。 The scanner device 20 has an appearance as shown in FIG. 1A. The scanner device 20 has each configuration as shown in FIG. 1B. The scanner device 20 includes a document separation mechanism 100, a paper feed tray 230, a line feed roller (hereinafter also referred to as LF roller) 240, image reading units 250A and 250B, a paper discharge roller 260, and a pinch roller (driven). Rollers) 270A and 270B, and a paper discharge tray 280. A document (paper) 300 to be read is set on the paper feed tray 230. For example, a plurality of documents 300 are set on the sheet feed tray 230 in a state where they overlap each other. In FIG. 1, the casing and the paper discharge tray 280 that configure the external appearance of the scanner device 20 are not shown. The scanner device 20 includes a drive control unit that is not shown in FIGS. 1A and 1B. The drive control unit detects the presence / absence of a sheet and the position of the leading edge during conveyance, and supplies a drive signal to a drive mechanism such as a motor that rotationally drives a rotation shaft 150 and the like described later. The document separation mechanism 100 includes, for example, a first separation piece 104, a third separation piece 108, a housing 116, a first pressing plate 124, a third pressing plate 128, and a stay 160. A detailed description of each component will be described later.
 LFローラ240は、後述する原稿分離機構100が有する分離ローラ102によって分離され搬送されてきた一枚の原稿300Aを画像読取部250A,250B側に搬送する。LFローラ240は、搬送される原稿300Aの一方の面の側に設置されている。LFローラ240は、回転軸242に支持されている。ピンチローラ270Aは、搬送される原稿300Aの他方の面の側で、LFローラ240に対向して設置されている。ピンチローラ270Aは、回転軸272Aに支持され、LFローラ240に従動して回転する。本実施形態では、搬送方向は、分離ローラ102の回転方向によって決定付けられる。なお、搬送方向は、分離ローラ102に決定付けられなくてもよい。LFローラ240などの他のローラによって、搬送方向が決定付けられてもよい。 The LF roller 240 conveys one document 300A separated and conveyed by a separation roller 102 included in the document separation mechanism 100 described later to the image reading units 250A and 250B. The LF roller 240 is installed on one side of the conveyed document 300A. The LF roller 240 is supported on the rotation shaft 242. The pinch roller 270A is disposed to face the LF roller 240 on the other surface side of the conveyed document 300A. The pinch roller 270A is supported by the rotation shaft 272A and rotates following the LF roller 240. In the present embodiment, the conveyance direction is determined by the rotation direction of the separation roller 102. Note that the conveyance direction may not be determined by the separation roller 102. The conveyance direction may be determined by another roller such as the LF roller 240.
 LFローラ240とピンチローラ270Aとは、分離ローラ102によって分離され搬送されてきた一枚の原稿300Aを挟持し、画像読取部250A,250B側に搬送する。この搬送は、原稿300Aが挟持された状態で、LFローラ240を支持した回転軸242がモータなどの回転駆動機構によって回転し、これにともないLFローラ240が回転して実現される。この際、ピンチローラ270Aは、LFローラ240に従動して回転する。なお、図1BのLFローラ240およびピンチローラ270A内に記載の矢印は、LFローラ240およびピンチローラ270Aの回転方向を示すものである。 The LF roller 240 and the pinch roller 270A sandwich the single document 300A separated and conveyed by the separation roller 102 and convey it to the image reading units 250A and 250B. This conveyance is realized by rotating the rotating shaft 242 supporting the LF roller 240 by a rotation driving mechanism such as a motor in the state where the document 300A is held, and rotating the LF roller 240 accordingly. At this time, the pinch roller 270A rotates following the LF roller 240. Note that the arrows in the LF roller 240 and the pinch roller 270A in FIG. 1B indicate the rotation directions of the LF roller 240 and the pinch roller 270A.
 画像読取部250A,250Bは、LFローラ240とピンチローラ270Aとによって搬送されてきた原稿300Aに記録されている画像を読み取る。画像読取部250A,250Bは、例えばCIS(Contact Image Sensor)を含む。なお、CCD(Charged Coupled Device)としてもよい。画像読取部250Aは、搬送される原稿300Aの他方の面の側に設けられ、この他方の面、例えば表面を読み取る。画像読取部250Bは搬送される原稿300Aの一方の面の側に設けられ、この一方の面、例えば裏面を読み取る。スキャナ装置20では、画像読取部250A,250Bによって両面読取機能が実現される。 Image reading units 250A and 250B read an image recorded on document 300A conveyed by LF roller 240 and pinch roller 270A. The image reading units 250A and 250B include, for example, a CIS (Contact Image Sensor). A CCD (ChargedCharCoupled Device) may be used. The image reading unit 250A is provided on the other surface side of the conveyed document 300A, and reads the other surface, for example, the front surface. The image reading unit 250B is provided on one side of the conveyed document 300A, and reads one side, for example, the back side. In the scanner device 20, a double-sided reading function is realized by the image reading units 250A and 250B.
 排紙ローラ260は、画像読取部250A,250Bを通過して搬送されてきた一枚の原稿300Aを、搬送方向の下流側に設置されている排紙トレイ280側に搬送する。排紙ローラ260は、搬送される原稿300Aの一方の面の側に設置されている。排紙ローラ260は、回転軸262に支持されている。ピンチローラ270Bは、搬送される原稿300Aの他方の面の側で、排紙ローラ260に対向して設置されている。ピンチローラ270Bは、回転軸272Bに支持され、排紙ローラ260に従動して回転する。 The paper discharge roller 260 conveys the single document 300A conveyed through the image reading units 250A and 250B to the paper discharge tray 280 installed on the downstream side in the conveyance direction. The paper discharge roller 260 is installed on one side of the conveyed document 300A. The paper discharge roller 260 is supported on the rotation shaft 262. The pinch roller 270 </ b> B is disposed to face the paper discharge roller 260 on the other side of the conveyed document 300 </ b> A. The pinch roller 270 </ b> B is supported by the rotation shaft 272 </ b> B and rotates following the paper discharge roller 260.
 排紙ローラ260とピンチローラ270Bとは、画像読取部250A,250Bを通過して搬送されてきた一枚の原稿300Aを挟持し、排紙トレイ280側に搬送する。この搬送は、原稿300Aが挟持された状態で、排紙ローラ260を支持した回転軸262がモータなどの回転駆動機構によって回転し、これにともない排紙ローラ260が回転して実現される。この際、ピンチローラ270Bは、排紙ローラ260に従動して回転する。なお、図1Bの排紙ローラ260およびピンチローラ270B内に記載の矢印は、排紙ローラ260およびピンチローラ270Bの回転方向を示すものである。 The paper discharge roller 260 and the pinch roller 270B sandwich the single document 300A conveyed through the image reading units 250A and 250B and convey it to the paper discharge tray 280 side. This conveyance is realized by rotating the rotary shaft 262 supporting the paper discharge roller 260 by a rotation driving mechanism such as a motor and the paper discharge roller 260 in association with the document 300A. At this time, the pinch roller 270 </ b> B rotates following the paper discharge roller 260. Note that the arrows in the paper discharge roller 260 and the pinch roller 270B in FIG. 1B indicate the rotation directions of the paper discharge roller 260 and the pinch roller 270B.
 排紙トレイ280は、排紙ローラ260とピンチローラ270Bとによって搬送され、排出された原稿300Aを受ける。すなわち、排紙ローラ260とピンチローラ270Bとによって搬送された原稿300Aは、排紙トレイ280に排出される。これによって原稿300Aの読取動作が終了する。給紙トレイ230に複数枚の原稿300がセットされている場合、原稿分離機構100によって既に搬送された原稿300Aとは異なる原稿300が順次連続して搬送され、搬送される原稿300に記録された画像が読み取られる。そして、順次、排紙トレイ280に排出される。排出された原稿300は、排紙トレイ280に積層される。なお、図1Aに示すスキャナ装置20は、排紙トレイ280が収納された状態にある。スキャナ装置20において、上述した読取動作が実行される場合、排紙トレイ280は、図1Aに示す引出方向に引き出され、伸長した状態で利用される。 The paper discharge tray 280 is conveyed by the paper discharge roller 260 and the pinch roller 270B and receives the discharged original 300A. That is, the original 300A conveyed by the paper discharge roller 260 and the pinch roller 270B is discharged to the paper discharge tray 280. Thereby, the reading operation of the document 300A is completed. When a plurality of originals 300 are set on the paper feed tray 230, originals 300 different from the original 300 </ b> A already conveyed by the original separation mechanism 100 are successively conveyed and recorded on the conveyed original 300. The image is read. Then, the paper is sequentially discharged to the paper discharge tray 280. The discharged document 300 is stacked on the discharge tray 280. Note that the scanner device 20 shown in FIG. 1A is in a state in which the paper discharge tray 280 is stored. In the scanner device 20, when the above-described reading operation is executed, the paper discharge tray 280 is pulled out in the pull-out direction shown in FIG. 1A and used in an extended state.
 図1Bに示す原稿分離機構100について、図2~図4を用いて説明する。原稿分離機構100は、図2に示すように給紙トレイ230に対し所定の位置に設置されている。原稿分離機構100は、搬送方向の下流側の所定の位置に設置されている。詳細には、原稿分離機構100は、分離ローラ102の回転軸150の軸心方向に沿った給紙トレイ230の幅方向の中心部に配置される。原稿分離機構100は、図2に示す、分離ローラ102と、第1分離片104と、第2分離片106と、第3分離片108とを有する。図3(a)は、図2のB-B断面図である。図3(b)は図2のC-C断面図である。図4は、図2のD-D断面図である。原稿分離機構100は、図3(a)に示す、第1付勢部110と、図3(b)に示す第2付勢部112と、図3(a),(b)および図4に示す第3付勢部114とを有する。なお、以下の説明では、第1分離片104と第2分離片106と第3分離片108とを総称して、分離片104~108ともいう。また、第1付勢部110と第2付勢部112と第3付勢部114とを総称して、付勢部110~114ともいう。 The document separation mechanism 100 shown in FIG. 1B will be described with reference to FIGS. The document separating mechanism 100 is installed at a predetermined position with respect to the paper feed tray 230 as shown in FIG. The document separation mechanism 100 is installed at a predetermined position on the downstream side in the transport direction. Specifically, the document separation mechanism 100 is disposed at the center in the width direction of the paper feed tray 230 along the axial direction of the rotation shaft 150 of the separation roller 102. The document separation mechanism 100 includes a separation roller 102, a first separation piece 104, a second separation piece 106, and a third separation piece 108 shown in FIG. FIG. 3A is a cross-sectional view taken along the line BB in FIG. FIG. 3B is a cross-sectional view taken along the line CC of FIG. 4 is a cross-sectional view taken along the line DD of FIG. The document separating mechanism 100 includes a first urging unit 110 shown in FIG. 3A, a second urging unit 112 shown in FIG. 3B, and FIGS. 3A, 3B, and 4. And a third urging portion 114 shown. In the following description, the first separation piece 104, the second separation piece 106, and the third separation piece 108 are collectively referred to as separation pieces 104 to 108. The first urging unit 110, the second urging unit 112, and the third urging unit 114 are also collectively referred to as urging units 110 to 114.
 原稿分離機構100で分離ローラ102は、分離ローラ102の外周面の一部が搬送される原稿300Aの一方の面の側に接触可能なよう、給紙トレイ230の面に上向きに突出するように設置されている。別言すれば、分離ローラ102は、搬送される原稿300Aに対し、上述したLFローラ240および排紙ローラ260などと同一の側に設置されている。一方、分離片104~108と付勢部110~114とは、筐体116に収容された状態で、搬送される原稿300Aの他方の面の側に設置されている。別言すれば、分離片104~108と付勢部110~114とは、搬送される原稿300Aに対し、上述したピンチローラ270A,270Bなどと同一の側に設置されている。筐体116は、分離片104~108および付勢部110~114を収容する。分離ローラ102と、筐体116とは、図2に示すように、給紙トレイ230を介して対向した位置関係で設置されている。筐体116は、このような位置関係となるように、スキャナ装置20内部の所定の位置に固定されたステー160に、ねじ止めなどされて固定されている。 In the original separation mechanism 100, the separation roller 102 protrudes upward on the surface of the paper feed tray 230 so that a part of the outer peripheral surface of the separation roller 102 can come into contact with one side of the original 300A to be conveyed. is set up. In other words, the separation roller 102 is installed on the same side as the LF roller 240 and the discharge roller 260 described above with respect to the conveyed document 300A. On the other hand, the separating pieces 104 to 108 and the urging portions 110 to 114 are installed on the other surface side of the document 300A to be conveyed while being accommodated in the housing 116. In other words, the separating pieces 104 to 108 and the urging units 110 to 114 are installed on the same side as the above-described pinch rollers 270A and 270B with respect to the conveyed document 300A. The housing 116 accommodates the separation pieces 104 to 108 and the urging portions 110 to 114. As shown in FIG. 2, the separation roller 102 and the housing 116 are installed in a positional relationship facing each other with the paper feed tray 230 interposed therebetween. The casing 116 is fixed by screwing or the like to a stay 160 fixed at a predetermined position inside the scanner device 20 so as to have such a positional relationship.
 分離ローラ102は、回転軸150に支持される。回転軸150は不図示のモータなどの回転駆動機構に連結されている。回転駆動機構が駆動し、これにともない回転軸150が回転すると、分離ローラ102も、図3(a),(b)などの分離ローラ102内に記載の矢印の方向に回転する。回転軸150により分離ローラ102が回転することで、分離ローラ102は、給紙トレイ230に複数枚重なり合った状態でセットされた原稿300から、原稿300Aを分離する。そして、分離ローラ102は、分離された原稿300Aを回転方向によって決定付けられる方向、即ち搬送方向に搬送する。すなわち、分離ローラ102は、原稿300AをLFローラ240側に搬送する。分離ローラ102の外周面は、シリコンゴムなどのゴムなどによって形成されている。 The separation roller 102 is supported on the rotating shaft 150. The rotation shaft 150 is connected to a rotation drive mechanism such as a motor (not shown). When the rotation drive mechanism is driven and the rotation shaft 150 is rotated accordingly, the separation roller 102 is also rotated in the direction of the arrow described in the separation roller 102 in FIGS. 3 (a) and 3 (b). When the separation roller 102 is rotated by the rotation shaft 150, the separation roller 102 separates the document 300 </ b> A from the document 300 set in a state where a plurality of sheets are overlapped on the sheet feeding tray 230. The separation roller 102 conveys the separated document 300A in the direction determined by the rotation direction, that is, the conveyance direction. That is, the separation roller 102 conveys the document 300A to the LF roller 240 side. The outer peripheral surface of the separation roller 102 is formed of rubber such as silicon rubber.
 分離片104~108は、ゴムなどの弾性部材によって形成されている。分離片104~108の一端部、すなわち分離片104~108の各先端部は、分離ローラ102の外周面に近接して配置されている。具体的に、分離片104~108の各先端部は、分離ローラ102の外周面に押圧された状態で配置されている。分離片104~108は、分離ローラ102によって搬送される原稿300Aに付着した原稿300Bを、原稿300Aから分離する。分離ローラ102と原稿300Aとが接する面とは異なる他方の面側の原稿である。つまり、原稿300Bは、原稿300Aが分離された以降に、原稿分離機構100により分離される原稿である。なお、ここで近接した状態とは、接触した状態を含むものである。 The separation pieces 104 to 108 are formed of an elastic member such as rubber. One end portions of the separation pieces 104 to 108, that is, the respective front end portions of the separation pieces 104 to 108 are arranged close to the outer peripheral surface of the separation roller 102. Specifically, the tip portions of the separation pieces 104 to 108 are arranged in a state of being pressed against the outer peripheral surface of the separation roller 102. Separation pieces 104 to 108 separate document 300B attached to document 300A conveyed by separation roller 102 from document 300A. This is a document on the other surface side different from the surface where the separation roller 102 and the document 300A are in contact with each other. That is, the document 300B is a document that is separated by the document separation mechanism 100 after the document 300A is separated. Here, the close state includes a contacted state.
 第1付勢部110は、第1分離片104を分離ローラ102の外周面側に付勢する。第2付勢部112は、第2分離片106を分離ローラ102の外周面側に付勢する。第3付勢部114は、第3分離片108を分離ローラ102の外周面側に付勢する。第1付勢部110は、第1付勢部材118と第1押圧板124とを備える。第2付勢部112は、第2付勢部材120と第2押圧板126とを備える。第3付勢部114は、第3付勢部材122と第3押圧板128とを備える。なお、以下の説明では、第1付勢部材118と第2付勢部材120と第3付勢部材122とを総称して、付勢部材118~122ともいう。また、第1押圧板124と第2押圧板126と第3押圧板128とを総称して、押圧板124~128ともいう。 The first urging unit 110 urges the first separation piece 104 toward the outer peripheral surface side of the separation roller 102. The second urging unit 112 urges the second separation piece 106 toward the outer peripheral surface of the separation roller 102. The third urging unit 114 urges the third separation piece 108 toward the outer peripheral surface side of the separation roller 102. The first urging unit 110 includes a first urging member 118 and a first pressing plate 124. The second urging unit 112 includes a second urging member 120 and a second pressing plate 126. The third urging unit 114 includes a third urging member 122 and a third pressing plate 128. In the following description, the first urging member 118, the second urging member 120, and the third urging member 122 are collectively referred to as urging members 118 to 122. The first pressing plate 124, the second pressing plate 126, and the third pressing plate 128 are also collectively referred to as pressing plates 124 to 128.
 付勢部材118~122は、例えばコイルばねによって形成されている。付勢部材118~122は、圧縮されて付勢力を発生する。押圧板124~128は、例えば所定の剛性を有する樹脂によって形成されている。押圧板124~128は、付勢部材118~122による付勢力を分離片104~108に伝達する。付勢部材118~122と押圧板124~128とによって実現される付勢部110~114による分離片104~108の付勢についての詳細は後述する。 The urging members 118 to 122 are formed by, for example, coil springs. The urging members 118 to 122 are compressed to generate an urging force. The pressing plates 124 to 128 are made of, for example, a resin having a predetermined rigidity. The pressing plates 124 to 128 transmit the urging force of the urging members 118 to 122 to the separation pieces 104 to 108. Details of the urging of the separation pieces 104 to 108 by the urging portions 110 to 114 realized by the urging members 118 to 122 and the pressing plates 124 to 128 will be described later.
 分離ローラ102と、付勢部110~114によって分離ローラ102の外周面側に付勢された分離片104~108とによって分離された一枚の原稿300Aは、分離ローラ102と分離片104~108との間を通過する。そして、原稿300Aは、上述したとおり分離ローラ102の回転に応じてLFローラ240側に搬送される。 One original 300A separated by the separation roller 102 and the separation pieces 104 to 108 urged toward the outer peripheral surface of the separation roller 102 by the urging portions 110 to 114 is separated into the separation roller 102 and the separation pieces 104 to 108. Pass between. Then, the document 300A is conveyed to the LF roller 240 side according to the rotation of the separation roller 102 as described above.
 ところで、分離片104~108の各先端部と分離ローラ102の外周面とが近接して配置された位置は、分離ローラ102によって搬送される原稿300Aと、原稿300Aに付着した原稿300Bとを分離する分離位置となる。具体的に、第1分離片104と分離ローラ102の外周面とが近接して配置された位置は、図3(a)に示す第1分離位置P1となる。第2分離片106と分離ローラ102の外周面とが近接して配置された位置は、図3(b)および図4に示す第2分離位置P2となる。第3分離片108と分離ローラ102の外周面とが近接して配置された位置は、図3(a),(b)および図4に示す第3分離位置P3となる。なお、図3(a),(b)および図4では、第1分離位置P1と第2分離位置P2と第3分離位置P3とをそれぞれ黒丸で示している。 By the way, the positions where the front ends of the separation pieces 104 to 108 and the outer peripheral surface of the separation roller 102 are arranged close to each other separate the original 300A conveyed by the separation roller 102 from the original 300B attached to the original 300A. This is the separation position. Specifically, the position where the first separation piece 104 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a first separation position P1 shown in FIG. The position where the second separation piece 106 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a second separation position P2 shown in FIG. 3B and FIG. A position where the third separation piece 108 and the outer peripheral surface of the separation roller 102 are arranged close to each other is a third separation position P3 shown in FIGS. 3A and 3B and FIG. In FIGS. 3A, 3B, and 4, the first separation position P1, the second separation position P2, and the third separation position P3 are indicated by black circles, respectively.
 第1分離位置P1と第2分離位置P2と第3分離位置P3との位置関係について説明する。まず、第3分離片108は、図2に示すように分離ローラ102の外周面における分離ローラ幅Wの方向の中心を含む位置に配置されている。したがって、第3分離位置P3は、分離ローラ102の外周面における分離ローラ幅Wの方向、即ち回転軸150の軸心方向に一致する方向の中心を含むように配置されている。第1分離片104と第2分離片106とは、分離ローラ102の外周面において、回転軸150の軸心方向に沿って、第3分離片108が配置される位置から、所定距離離れた位置に配置されている。換言すれば、第1分離片104は、回転軸150の軸心方向の一端側に配置されている。また、第2分離片106は、回転軸150の軸心方向の他端側に配置されている。したがって、第1分離位置P1は、第3分離位置P3より、回転軸150の軸心方向に沿って、分離ローラ102の一端側、即ち分離ローラ102の外周面における分離ローラ幅Wの方向の一端側となるような位置に配置されている。第2分離位置P2は、第3分離位置P3より、回転軸150の軸心方向に沿って、分離ローラ102の他端側、即ち分離ローラ102の外周面における分離ローラ幅Wの方向の他端側となるような位置に配置されている。 The positional relationship among the first separation position P1, the second separation position P2, and the third separation position P3 will be described. First, as shown in FIG. 2, the third separation piece 108 is disposed at a position including the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102. Therefore, the third separation position P <b> 3 is arranged so as to include the center of the outer peripheral surface of the separation roller 102 in the direction of the separation roller width W, that is, the direction that coincides with the axial direction of the rotation shaft 150. The first separation piece 104 and the second separation piece 106 are located at a predetermined distance on the outer peripheral surface of the separation roller 102 from the position where the third separation piece 108 is arranged along the axial direction of the rotation shaft 150. Is arranged. In other words, the first separation piece 104 is disposed on one end side in the axial direction of the rotation shaft 150. Further, the second separation piece 106 is disposed on the other end side in the axial direction of the rotation shaft 150. Therefore, the first separation position P1 is one end in the direction of the separation roller width W on the one end side of the separation roller 102, that is, the outer peripheral surface of the separation roller 102, along the axial center direction of the rotation shaft 150 from the third separation position P3. It is arranged at a position to be on the side. The second separation position P2 is located at the other end side of the separation roller 102, that is, the other end in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102 along the axial center direction of the rotation shaft 150 from the third separation position P3. It is arranged at a position to be on the side.
 第1分離片104と第2分離片106とは、第3分離位置P3をとおる搬送方向の直線を挟み、この搬送方向の直線を中心として対称に配置されている。したがって、第1分離位置P1と第2分離位置P2とは、第3分離位置P3をとおる搬送方向の直線を中心として対称な位置関係となる。第1分離位置P1と第2分離位置P2とは、ともに図2に示す仮想直線L1上となる。仮想直線L1は、分離ローラ102の回転軸150に沿った直線である。または、仮想直線L1は、分離ローラ102の回転軸150に平行な直線である。 The first separation piece 104 and the second separation piece 106 are arranged symmetrically around a straight line in the conveyance direction passing through the third separation position P3. Therefore, the first separation position P1 and the second separation position P2 have a symmetrical positional relationship with respect to a straight line in the transport direction passing through the third separation position P3. Both the first separation position P1 and the second separation position P2 are on the virtual straight line L1 shown in FIG. The virtual straight line L1 is a straight line along the rotation axis 150 of the separation roller 102. Alternatively, the virtual straight line L <b> 1 is a straight line parallel to the rotation shaft 150 of the separation roller 102.
 また、第1分離片104と第2分離片106とは、第3分離片108と比較して原稿300Aの搬送方向の上流側に配置されている。第1分離位置P1と第2分離位置P2とは、第3分離位置P3と比較して原稿300Aの搬送方向の上流側に配置されている。換言すれば、第3分離片108は、第1分離片104および第2分離片106と比較して原稿300Aの搬送方向の下流側に配置されている。第3分離位置P3は、第1分離位置P1および第2分離位置P2と比較して原稿300Aの搬送方向の下流側に配置されている。 Further, the first separation piece 104 and the second separation piece 106 are arranged on the upstream side in the conveyance direction of the document 300A as compared with the third separation piece 108. The first separation position P1 and the second separation position P2 are arranged on the upstream side in the transport direction of the document 300A compared to the third separation position P3. In other words, the third separation piece 108 is disposed on the downstream side in the conveyance direction of the original 300 </ b> A compared to the first separation piece 104 and the second separation piece 106. The third separation position P3 is disposed on the downstream side in the conveyance direction of the document 300A compared to the first separation position P1 and the second separation position P2.
 分離片104~108と付勢部110~114とは、図3(a),(b)および図4に示すような状態で、筐体116に収容されている。筐体116には、6個の収容部130~140が形成されている。6個の収容部130~140の配置は、上述した分離片104~108の位置関係にしたがった位置となる。 The separation pieces 104 to 108 and the urging portions 110 to 114 are accommodated in the casing 116 in the state as shown in FIGS. 3 (a), 3 (b) and FIG. The housing 116 is formed with six accommodating portions 130 to 140. The arrangement of the six accommodating portions 130 to 140 is a position according to the positional relationship of the separation pieces 104 to 108 described above.
 収容部130は、図3(a)に示すように、第1分離片104を収容する凹状の空間である。収容部132は、第1付勢部110を構成する第1付勢部材118および第1押圧板124を収容する凹状の空間である。収容部130,132は、搬送方向に対して前後に並んで形成されている。詳細には、収容部130は、収容部132に対して搬送方向の後側、すなわち搬送方向の上流側に形成されている。換言すれば、収容部132は、収容部130に対して搬送方向の下流側に形成されている。第1分離片104が収容部130に収容された状態で、第1分離片104の一端部である先端部は、分離ローラ102の外周面側に突出する。第1分離片104の先端部は、分離ローラ102の外周面に接し、搬送方向の下流側に向けて屈曲している。 The accommodating part 130 is a concave space for accommodating the first separation piece 104 as shown in FIG. The accommodating portion 132 is a concave space that accommodates the first urging member 118 and the first pressing plate 124 that constitute the first urging portion 110. The accommodating portions 130 and 132 are formed side by side with respect to the transport direction. Specifically, the storage unit 130 is formed on the rear side in the transport direction with respect to the storage unit 132, that is, on the upstream side in the transport direction. In other words, the storage portion 132 is formed on the downstream side in the transport direction with respect to the storage portion 130. In a state where the first separation piece 104 is accommodated in the accommodation portion 130, the tip portion that is one end portion of the first separation piece 104 protrudes toward the outer peripheral surface side of the separation roller 102. The tip of the first separation piece 104 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
 収容部132への第1付勢部材118および第1押圧板124の収容は、まず、第1付勢部材118が収容部132の底部側に配置される。第1押圧板124は、その一端部である先端部が分離ローラ102の外周面側に向けて突出するように、収容部132に収容されている。突出した第1押圧板124の先端部は、搬送方向の下流側に屈曲した第1分離片104の先端部に接する。収容部132の底部に設置された第1付勢部材118は、前述の状態の第1押圧板124の他端部である後端部と、収容部132の底部との間で圧縮される。収容部132の底部は、第1付勢部材118と、収容部132とが接する面である。圧縮状態となった第1付勢部材118は、第1押圧板124を付勢する。したがって、第1押圧板124と接した第1分離片104は、第1付勢部材118による付勢力によって付勢され、分離ローラ102の外周面側に押圧される。 To accommodate the first urging member 118 and the first pressing plate 124 in the accommodating portion 132, the first urging member 118 is first disposed on the bottom side of the accommodating portion 132. The first pressing plate 124 is accommodated in the accommodating portion 132 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102. The protruding front end portion of the first pressing plate 124 is in contact with the front end portion of the first separation piece 104 bent toward the downstream side in the transport direction. The first urging member 118 installed at the bottom of the housing portion 132 is compressed between the rear end portion, which is the other end portion of the first pressing plate 124 in the above-described state, and the bottom portion of the housing portion 132. The bottom portion of the storage portion 132 is a surface on which the first biasing member 118 and the storage portion 132 are in contact. The first urging member 118 in the compressed state urges the first pressing plate 124. Accordingly, the first separation piece 104 in contact with the first pressing plate 124 is urged by the urging force of the first urging member 118 and is pressed toward the outer peripheral surface side of the separation roller 102.
 収容部134は、図3(b)に示すように、第2分離片106を収容する凹状の空間である。収容部136は、第2付勢部112を構成する第2付勢部材120および第2押圧板126を収容する凹状の空間である。収容部134,136は、搬送方向に対して前後に並んで形成されている。詳細には、収容部134は、収容部136に対して搬送方向の後側、すなわち搬送方向の上流側に形成されている。換言すれば、収容部136は、収容部134に対して搬送方向の下流側に形成されている。第2分離片106が収容部134に収容された状態で、第2分離片106の一端部である先端部は、分離ローラ102の外周面側に突出する。第2分離片106の先端部は、分離ローラ102の外周面に接し、搬送方向の下流側に向けて屈曲している。 The accommodating part 134 is a concave space for accommodating the second separation piece 106 as shown in FIG. The accommodating portion 136 is a concave space that accommodates the second urging member 120 and the second pressing plate 126 that constitute the second urging portion 112. The accommodating parts 134 and 136 are formed side by side with respect to the transport direction. Specifically, the storage unit 134 is formed on the rear side in the transport direction with respect to the storage unit 136, that is, on the upstream side in the transport direction. In other words, the storage unit 136 is formed on the downstream side in the transport direction with respect to the storage unit 134. In a state where the second separation piece 106 is accommodated in the accommodation portion 134, the tip portion that is one end portion of the second separation piece 106 protrudes toward the outer peripheral surface side of the separation roller 102. The tip of the second separation piece 106 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
 収容部136への第2付勢部材120および第2押圧板126の収容は、まず、第2付勢部材120が収容部136の底部側に配置される。第2押圧板126は、その一端部である先端部が分離ローラ102の外周面側に向けて突出するように、収容部136に収容されている。収容部136の底部は、第2付勢部材120と、収容部136とが接する面である。突出した第2押圧板126の先端部は、搬送方向の下流側に屈曲した第2分離片106の先端部に接する。収容部136の底部に設置された第2付勢部材120は、前述の状態の第2押圧板126の他端部である後端部と、収容部136の底部との間で圧縮される。圧縮状態となった第2付勢部材120は、第2押圧板126を付勢する。したがって、第2押圧板126と接した第2分離片106は、第2付勢部材120による付勢力によって付勢され、分離ローラ102の外周面側に押圧される。 To accommodate the second urging member 120 and the second pressing plate 126 in the accommodating portion 136, the second urging member 120 is first disposed on the bottom side of the accommodating portion 136. The second pressing plate 126 is accommodated in the accommodating portion 136 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102. The bottom part of the accommodating part 136 is a surface where the second urging member 120 and the accommodating part 136 are in contact. The protruding tip of the second pressing plate 126 is in contact with the tip of the second separation piece 106 bent toward the downstream side in the transport direction. The second urging member 120 installed at the bottom of the housing portion 136 is compressed between the rear end portion that is the other end portion of the second pressing plate 126 in the above-described state and the bottom portion of the housing portion 136. The second urging member 120 in the compressed state urges the second pressing plate 126. Therefore, the second separation piece 106 in contact with the second pressing plate 126 is urged by the urging force of the second urging member 120 and is pressed toward the outer peripheral surface side of the separation roller 102.
 収容部138は、図4に示すように、第3分離片108を収容する凹状の空間である。収容部140は、第3付勢部114を構成する第3付勢部材122および第3押圧板128を収容する凹状の空間である。収容部138,140は、搬送方向に対して前後に並んで形成されている。詳細には、収容部138は、収容部140に対して搬送方向の後側、すなわち搬送方向の上流側に形成されている。換言すれば、収容部140は、収容部138に対して搬送方向の下流側に形成されている。第3分離片108が収容部138に収容された状態で、第3分離片108の一端部である先端部は、分離ローラ102の外周面側に突出する。第3分離片108の先端部は、分離ローラ102の外周面に接し、搬送方向の下流側に向けて屈曲している。 As shown in FIG. 4, the accommodating portion 138 is a concave space that accommodates the third separation piece 108. The accommodating portion 140 is a concave space that accommodates the third urging member 122 and the third pressing plate 128 that constitute the third urging portion 114. The accommodating portions 138 and 140 are formed side by side with respect to the transport direction. Specifically, the storage unit 138 is formed on the rear side in the transport direction with respect to the storage unit 140, that is, on the upstream side in the transport direction. In other words, the storage unit 140 is formed on the downstream side in the transport direction with respect to the storage unit 138. In a state where the third separation piece 108 is accommodated in the accommodation portion 138, the tip portion that is one end portion of the third separation piece 108 protrudes toward the outer peripheral surface side of the separation roller 102. The tip of the third separation piece 108 is in contact with the outer peripheral surface of the separation roller 102 and is bent toward the downstream side in the transport direction.
 収容部140への第3付勢部材122および第3押圧板128の収容は、まず、第3付勢部材122が収容部140の底部側に配置される。第3押圧板128は、その一端部である先端部が分離ローラ102の外周面側に向けて突出するように、収容部140に収容されている。突出した第3押圧板128の先端部は、搬送方向の下流側に屈曲した第3分離片108の先端部に接する。収容部140の底部に設置された第3付勢部材122は、前述の状態の第3押圧板128の他端部である後端部と、収容部140の底部との間で圧縮される。圧縮状態となった第3付勢部材122は、第3押圧板128を付勢する。したがって、第3押圧板128と接した第3分離片108は、第3付勢部材122による付勢力によって付勢され、分離ローラ102の外周面側に押圧される。 To accommodate the third urging member 122 and the third pressing plate 128 in the accommodating portion 140, first, the third urging member 122 is disposed on the bottom side of the accommodating portion 140. The third pressing plate 128 is accommodated in the accommodating portion 140 such that a tip portion that is one end portion thereof protrudes toward the outer peripheral surface side of the separation roller 102. The protruding tip of the third pressing plate 128 is in contact with the tip of the third separation piece 108 bent toward the downstream side in the transport direction. The third urging member 122 installed at the bottom of the housing part 140 is compressed between the rear end part which is the other end part of the third pressing plate 128 in the above-described state and the bottom part of the housing part 140. The third urging member 122 in the compressed state urges the third pressing plate 128. Therefore, the third separation piece 108 in contact with the third pressing plate 128 is urged by the urging force of the third urging member 122 and is pressed toward the outer peripheral surface side of the separation roller 102.
 ここで、図3(a)に示すように収容部132および収容部140は、筐体116において平行に形成されている。また、図3(b)に示すように収容部136および収容部140も、筐体116において平行に形成されている。つまり、付勢部110~114が収容される収容部132,136,140は、筐体116においてそれぞれ平行となるように形成されている。そのため、相互に平行な収容部132,136,140に収容された付勢部110~114それぞれについても平行となる。したがって、第1付勢部材118の付勢力に基づく第1付勢部110の第1付勢方向と、第2付勢部材120の付勢力に基づく第2付勢部112の第2付勢方向と、第3付勢部材122の付勢力に基づく第3付勢部114の第3付勢方向とは、互いに平行な方向となる。原稿分離機構100では、分離片104~108は、分離ローラ102の外周面側に向けて平行な方向に付勢されている。なお、分離片104~108が収容される収容部130,134,138についても、筐体116においてそれぞれ平行となるように形成されていてもよい。さらに、収容部130~140がそれぞれ平行となるように形成されていてもよい。 Here, as shown in FIG. 3A, the accommodating portion 132 and the accommodating portion 140 are formed in parallel in the housing 116. In addition, as shown in FIG. 3B, the housing portion 136 and the housing portion 140 are also formed in parallel in the housing 116. That is, the accommodating portions 132, 136, and 140 in which the urging portions 110 to 114 are accommodated are formed in the casing 116 so as to be parallel to each other. Therefore, the urging portions 110 to 114 accommodated in the accommodating portions 132, 136 and 140 parallel to each other are also parallel. Accordingly, the first biasing direction of the first biasing portion 110 based on the biasing force of the first biasing member 118 and the second biasing direction of the second biasing portion 112 based on the biasing force of the second biasing member 120. And the third urging direction of the third urging unit 114 based on the urging force of the third urging member 122 are parallel to each other. In the document separating mechanism 100, the separating pieces 104 to 108 are urged in a direction parallel to the outer peripheral surface side of the separating roller 102. Note that the accommodating portions 130, 134, and 138 in which the separation pieces 104 to 108 are accommodated may also be formed so as to be parallel to each other in the housing 116. Further, the accommodating portions 130 to 140 may be formed so as to be parallel to each other.
 以上、本実施形態の原稿分離機構100によれば、次のような有利な効果を得ることができる。従来の分離搬送機構に対し、本実施形態の原稿分離機構100では、第3分離位置P3が搬送方向の下流側となるようにして、第1分離位置P1と第2分離位置P2と第3分離位置P3とが略V字状または略U字状に配置されるように、第1分離片104と第2分離片106と第3分離片108とを配置した。そのため、分離動作が、分離ローラ102の外周面における分離ローラ幅Wの方向の両端側に配置された第1分離片104および第2分離片106の2点、すなわち第1分離位置P1および第2分離位置P2で押圧された状態で開始される。したがって、原稿分離機構100は、原稿300Aの回転を抑制し、分離動作に起因する原稿300Aの斜行を防止することが可能である。そして、原稿分離機構100は、原稿詰まりを防止することができる。 As described above, according to the document separation mechanism 100 of the present embodiment, the following advantageous effects can be obtained. In contrast to the conventional separation and conveyance mechanism, in the document separation mechanism 100 of the present embodiment, the first separation position P1, the second separation position P2, and the third separation position are set such that the third separation position P3 is on the downstream side in the conveyance direction. The first separation piece 104, the second separation piece 106, and the third separation piece 108 are arranged so that the position P3 is arranged in a substantially V shape or a substantially U shape. Therefore, the separation operation is performed at two points of the first separation piece 104 and the second separation piece 106 arranged on both ends in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102, that is, the first separation position P1 and the second separation position. It starts in a state of being pressed at the separation position P2. Therefore, the document separation mechanism 100 can suppress the rotation of the document 300A and prevent the skew of the document 300A due to the separation operation. The document separating mechanism 100 can prevent document jamming.
 本実施形態では、さらに、第3分離位置P3が搬送方向の下流側となるようにして、第1分離位置P1と第2分離位置P2と第3分離位置P3とが略V字状または略U字状に配置されるように、第1分離片104と第2分離片106と第3分離片108とを配置した。したがって、搬送される原稿300Aの分離ポイントが、第1分離位置P1および第2分離位置P2とで分離される第1分離ポイントと、第3分離位置で分離される第2分離ポイントとの少なくとも2つの分離ポイントが形成される。本実施形態の原稿分離機構100とは異なり、第1分離ポイントと第2分離ポイントとの間に、搬送方向に沿って所定の領域が設けられない原稿分離機構の場合、結果として、分離ポイントが1箇所しか設けられない。この結果、1箇所の分離ポイントで原稿が分離できなければ、その後、重送したままの原稿が搬送されるおそれがある。一方で、本実施形態の原稿分離機構100では、第1分離ポイントと第2分離ポイントとの間に、搬送方向に沿って所定の領域が設けられている。そのため、例え、第1分離ポイントで原稿が分離されなかったとしても、第2分離ポイントで原稿を再度分離することができるため、原稿分離機構100は、斜行を防止するとともに、原稿の分離精度を高めることができる。 In the present embodiment, the first separation position P1, the second separation position P2, and the third separation position P3 are substantially V-shaped or substantially U-shaped so that the third separation position P3 is on the downstream side in the transport direction. The first separation piece 104, the second separation piece 106, and the third separation piece 108 were arranged so as to be arranged in a letter shape. Accordingly, at least two separation points of the conveyed document 300A are the first separation point separated at the first separation position P1 and the second separation position P2, and the second separation point separated at the third separation position. Two separation points are formed. Unlike the document separation mechanism 100 of the present embodiment, in the case of a document separation mechanism in which a predetermined area is not provided along the conveyance direction between the first separation point and the second separation point, as a result, the separation point is Only one location is provided. As a result, if the original cannot be separated at one separation point, there is a possibility that the original that has been fed double will be conveyed thereafter. On the other hand, in the document separation mechanism 100 of the present embodiment, a predetermined region is provided along the conveyance direction between the first separation point and the second separation point. For this reason, even if the original is not separated at the first separation point, the original can be separated again at the second separation point, so that the original separation mechanism 100 prevents skewing and the separation accuracy of the original. Can be increased.
 本実施形態の原稿分離機構100は、次のような構成としてもよい。すなわち、上記では、収容部132,136,140が、筐体116において平行に形成され、第1付勢方向と第2付勢方向と第3付勢方向とが平行となるようにした。しかし、本実施形態の原稿分離機構100は、このような構成に限定されるものではない。原稿分離機構100では、第3分離位置P3が搬送方向の下流側となるようにして、第1分離位置P1と第2分離位置P2と第3分離位置P3とが略V字状または略U字状に配置されるように、第1分離片104と第2分離片106と第3分離片108とが配置される。そして、このような配置によって、上述した有利な効果を得るものである。したがって、第1分離位置P1と第2分離位置P2と第3分離位置P3とが前述のように配置されていればよい。 The document separation mechanism 100 of the present embodiment may be configured as follows. That is, in the above, the accommodating parts 132, 136, and 140 are formed in parallel in the casing 116 so that the first urging direction, the second urging direction, and the third urging direction are parallel to each other. However, the document separation mechanism 100 of the present embodiment is not limited to such a configuration. In the document separation mechanism 100, the first separation position P1, the second separation position P2, and the third separation position P3 are substantially V-shaped or substantially U-shaped so that the third separation position P3 is on the downstream side in the transport direction. The first separation piece 104, the second separation piece 106, and the third separation piece 108 are arranged so as to be arranged in a shape. And the advantageous effect mentioned above is acquired by such arrangement | positioning. Therefore, the first separation position P1, the second separation position P2, and the third separation position P3 need only be arranged as described above.
 また、上記では第1分離片104と第2分離片106と第3分離片108とを有する原稿分離機構100を例に説明した。原稿分離機構が備える分離片の数は、3以上の奇数であればこれ以外の数としてもよい。また、原稿分離機構が備える分離片の数を、偶数としてもよい。例えば、図5に示すような原稿分離機構500のように5つの分離片としてもよい。なお、以下では、上記または以下において先に説明した構成と同一の構成について、同一の符号を付して説明する。また、上記などと同一の構成については、その説明は省略する。 In the above description, the document separation mechanism 100 having the first separation piece 104, the second separation piece 106, and the third separation piece 108 has been described as an example. The number of separation pieces included in the document separation mechanism may be other than this as long as it is an odd number of 3 or more. The number of separation pieces provided in the document separation mechanism may be an even number. For example, five separation pieces may be used like a document separation mechanism 500 as shown in FIG. In the following, the same components as those described above or below will be described with the same reference numerals. The description of the same configuration as above is omitted.
 原稿分離機構500は、第1分離片104と第2分離片106と第3分離片108との他、さらに第4分離片510と第5分離片512とを有する。なお、原稿分離機構500において、第1分離片104と第2分離片106と第3分離片108との構成および位置関係などについては、原稿分離機構100と同一である。第4分離片510と第5分離片512とは、ゴムなどの弾性部材によって形成されている。第4分離片510と第5分離片512とは、それぞれの一端部である各先端部が分離ローラ102の外周面に近接して配置されている。具体的に、第4分離片510および第5分離片512の各先端部は、分離ローラ102の外周面に押圧された状態で配置されている。第4分離片510と第5分離片512とは、分離ローラ102によって搬送される原稿300Aに付着した原稿300Bを、原稿300Aから分離する。なお、近接した状態とは、接触した状態を含む。 The document separation mechanism 500 includes a first separation piece 104, a second separation piece 106, and a third separation piece 108, and a fourth separation piece 510 and a fifth separation piece 512. In the document separation mechanism 500, the configuration and positional relationship of the first separation piece 104, the second separation piece 106, and the third separation piece 108 are the same as those of the document separation mechanism 100. The fourth separation piece 510 and the fifth separation piece 512 are formed of an elastic member such as rubber. The fourth separation piece 510 and the fifth separation piece 512 are arranged such that respective tip portions which are one end portions thereof are close to the outer peripheral surface of the separation roller 102. Specifically, the tip portions of the fourth separation piece 510 and the fifth separation piece 512 are arranged in a state of being pressed against the outer peripheral surface of the separation roller 102. The fourth separation piece 510 and the fifth separation piece 512 separate the document 300B attached to the document 300A conveyed by the separation roller 102 from the document 300A. The close state includes a contact state.
 第4分離片510は、第1分離片104より、分離ローラ102の外周面において、回転軸150の軸心方向の一端側に配置されている。第5分離片512は、第2分離片106より、分離ローラ102の外周面において、回転軸150の軸心方向の他端側に配置されている。したがって、第4分離片510による原稿300Aに付着した原稿300Bの第4分離位置は、第1分離位置P1より、回転軸150の軸心方向に沿って、分離ローラ102の一端側、即ち分離ローラ102の外周面における分離ローラ幅Wの方向の一端側に配置されている。第5分離片512による原稿300Aに付着した原稿300Bの第5分離位置は、第2分離位置P2より、回転軸150の軸心方向に沿って、分離ローラ102の他端側、即ち分離ローラ102の外周面における分離ローラ幅Wの方向の他端側に配置されている。 The fourth separation piece 510 is disposed on one end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102 from the first separation piece 104. The fifth separation piece 512 is disposed on the other end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102 from the second separation piece 106. Therefore, the fourth separation position of the document 300B attached to the document 300A by the fourth separation piece 510 is one end side of the separation roller 102, that is, the separation roller along the axial center direction of the rotation shaft 150 from the first separation position P1. It is arranged on one end side in the direction of the separation roller width W on the outer peripheral surface of 102. The fifth separation position of the document 300B attached to the document 300A by the fifth separation piece 512 is the other end side of the separation roller 102, that is, the separation roller 102 along the axial direction of the rotation shaft 150 from the second separation position P2. Is disposed on the other end side in the direction of the separation roller width W on the outer peripheral surface of the outer peripheral surface.
 第4分離片510と第5分離片512とは、第3分離位置P3をとおる搬送方向の直線を挟み、この搬送方向の直線を中心として対称に配置されている。したがって、第4分離位置と第5分離位置とは、第3分離位置P3をとおる搬送方向の直線を中心として対称な位置関係となる。原稿分離機構500においても、第1分離位置P1と第2分離位置P2とは、ともに図5に示す仮想直線L1上となる。仮想直線L1は、図2の場合と同じく、分離ローラ102の回転軸150に沿った直線である。または、仮想直線L1は、分離ローラ102の回転軸150に平行な直線である。一方、第4分離位置と第5分離位置とは、図5に示す仮想直線L2上となる。仮想直線L2は、仮想直線L1に沿ったまたは平行な、搬送方向の上流側の直線である。 The fourth separation piece 510 and the fifth separation piece 512 are arranged symmetrically with respect to the straight line in the conveyance direction across the third separation position P3. Accordingly, the fourth separation position and the fifth separation position are symmetrical with respect to a straight line in the transport direction passing through the third separation position P3. Also in the document separation mechanism 500, the first separation position P1 and the second separation position P2 are both on the virtual straight line L1 shown in FIG. The virtual straight line L1 is a straight line along the rotation shaft 150 of the separation roller 102 as in the case of FIG. Alternatively, the virtual straight line L <b> 1 is a straight line parallel to the rotation shaft 150 of the separation roller 102. On the other hand, the fourth separation position and the fifth separation position are on the virtual straight line L2 shown in FIG. The virtual straight line L2 is a straight line on the upstream side in the transport direction along or parallel to the virtual straight line L1.
 第4分離片510と第5分離片512とは、第3分離片108と比較して原稿300Aの搬送方向の上流側に配置されている。したがって、第4分離位置は、第3分離位置P3と比較して原稿300Aの搬送方向の上流側に配置されている。また、第5分離位置は、第3分離位置P3と比較して原稿300Aの搬送方向の上流側に配置されている。換言すれば、第3分離片108は、第4分離片510および第5分離片512と比較して原稿300Aの搬送方向の下流側に配置されている。第3分離位置P3は、第4分離位置および第5分離位置と比較して原稿300Aの搬送方向の下流側に配置されている。また、第4分離片510は、第1分離片104と比較して原稿300Aの搬送方向の上流側に配置されている。したがって、第4分離位置は、第1分離位置P1と比較して原稿300Aの搬送方向の上流側に配置されている。また、第5分離片512は、第2分離片106と比較して原稿300Aの搬送方向の上流側に配置されている。したがって、第5分離位置は、第2分離位置P2と比較して原稿300Aの搬送方向の上流側に配置されている。 The fourth separation piece 510 and the fifth separation piece 512 are arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation piece 108. Therefore, the fourth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation position P3. Further, the fifth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the third separation position P3. In other words, the third separation piece 108 is disposed on the downstream side in the conveyance direction of the document 300A compared to the fourth separation piece 510 and the fifth separation piece 512. The third separation position P3 is arranged on the downstream side in the conveyance direction of the document 300A compared to the fourth separation position and the fifth separation position. Further, the fourth separation piece 510 is arranged on the upstream side in the conveyance direction of the original 300 </ b> A compared to the first separation piece 104. Therefore, the fourth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the first separation position P1. Further, the fifth separation piece 512 is arranged on the upstream side in the conveyance direction of the document 300 </ b> A compared to the second separation piece 106. Therefore, the fifth separation position is arranged on the upstream side in the conveyance direction of the document 300A compared to the second separation position P2.
 この他、第1分離位置P1と第2分離位置P2と第4分離位置と第5分離位置とが、仮想直線L1上となるように、第1分離片104と第2分離片106と第4分離片510と第5分離片512とを配置した構成としてもよい。 In addition, the first separation piece 104, the second separation piece 106, and the fourth separation position so that the first separation position P1, the second separation position P2, the fourth separation position, and the fifth separation position are on the virtual straight line L1. The separation piece 510 and the fifth separation piece 512 may be arranged.
 原稿分離機構500は、第1付勢部110と第2付勢部112と第3付勢部114の他、さらに第4付勢部と第5付勢部とを有する。第4付勢部は、第4分離片510を分離ローラ102の外周面側に付勢する。第5付勢部は、第5分離片512を分離ローラ102の外周面側に付勢する。第4付勢部は、第1付勢部110などと同じく、図5には図示されていない第4付勢部材と、第4押圧板514とを備える。第5付勢部は、第2付勢部112などと同じく、図5には図示されていない第5付勢部材と、第5押圧板516とを備える。 The document separating mechanism 500 has a fourth urging unit and a fifth urging unit in addition to the first urging unit 110, the second urging unit 112, and the third urging unit 114. The fourth urging unit urges the fourth separation piece 510 toward the outer peripheral surface of the separation roller 102. The fifth urging unit urges the fifth separation piece 512 toward the outer peripheral surface of the separation roller 102. Similar to the first urging unit 110 and the like, the fourth urging unit includes a fourth urging member (not shown in FIG. 5) and a fourth pressing plate 514. The fifth urging unit includes a fifth urging member (not shown in FIG. 5) and a fifth pressing plate 516, like the second urging unit 112.
 第4付勢部を構成する第4付勢部材および第4押圧板514の筐体116への収容は、第1付勢部110などの場合と同様に行われる。第5付勢部を構成する第5付勢部材および第5押圧板516の筐体116への収容は、第2付勢部112などの場合と同様に行われる。また、第4付勢部による第4分離片510の付勢は、第1付勢部110による第1分離片104の付勢などと同様に行われる。第5付勢部による第5分離片512の付勢は、第2付勢部112による第2分離片106の付勢などと同様に行われる。なお、筐体116は、第4分離片510と第4付勢部と第5分離片512と第5付勢部とをそれぞれ収容する収容部を、所定の位置に有する。第1付勢部110と第2付勢部112と第3付勢部114と第4付勢部と第5付勢部による付勢方向は、例えば原稿分離機構100の場合と同様に設定することもできる。 The housing of the fourth urging member and the fourth pressing plate 514 constituting the fourth urging unit in the housing 116 is performed in the same manner as the first urging unit 110 and the like. The fifth urging member constituting the fifth urging unit and the fifth pressing plate 516 are accommodated in the housing 116 in the same manner as the second urging unit 112 and the like. Further, the urging of the fourth separation piece 510 by the fourth urging unit is performed in the same manner as the urging of the first separation piece 104 by the first urging unit 110. The urging of the fifth separation piece 512 by the fifth urging unit is performed in the same manner as the urging of the second separation piece 106 by the second urging unit 112. Note that the housing 116 has storage portions for storing the fourth separation piece 510, the fourth urging portion, the fifth separation piece 512, and the fifth urging portion at predetermined positions. The urging directions by the first urging unit 110, the second urging unit 112, the third urging unit 114, the fourth urging unit, and the fifth urging unit are set in the same manner as in the case of the document separation mechanism 100, for example. You can also.
 また、分離位置が次のような位置関係で配置された構成とすることもできる。すなわち、原稿分離機構100では、第3分離位置P3が、分離ローラ102の外周面における分離ローラ幅Wの方向の中心を含むように配置されていた。この他、第3分離片108による第3分離位置P3が、分離ローラ幅Wの方向の中心を含まない位置となるようにしてもよい。ただし、このような場合であっても、原稿分離機構100と同じく、第1分離位置P1は、第3分離位置P3より、回転軸150の軸心方向に沿って、分離ローラ102の一端側となるような位置に配置される。また、第2分離位置P2は、第3分離位置P3より、回転軸150の軸心方向に沿って、分離ローラ102の他端側となるような位置に配置される。第3分離片108は、分離ローラ幅Wの方向の中心を含まない位置に対応して配置される。また、第1分離片104は、分離ローラ102の外周面において、回転軸150の軸心方向の一端側に配置され、第2分離片106は、他端側に配置される。 Also, the separation positions can be arranged in the following positional relationship. That is, in the document separation mechanism 100, the third separation position P3 is disposed so as to include the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102. In addition, the third separation position P3 by the third separation piece 108 may be a position that does not include the center in the direction of the separation roller width W. However, even in such a case, like the document separation mechanism 100, the first separation position P1 is closer to the one end side of the separation roller 102 along the axial direction of the rotation shaft 150 than the third separation position P3. It is arranged at such a position. Further, the second separation position P2 is disposed at a position on the other end side of the separation roller 102 along the axial center direction of the rotation shaft 150 from the third separation position P3. The third separation piece 108 is arranged corresponding to a position not including the center in the direction of the separation roller width W. The first separation piece 104 is disposed on one end side in the axial direction of the rotation shaft 150 on the outer peripheral surface of the separation roller 102, and the second separation piece 106 is disposed on the other end side.
 また、原稿分離機構100では、第3分離位置P3と比較して原稿300Aの搬送方向の上流側に配置されている第1分離位置P1と第2分離位置P2との間には、分離位置が配置されていない。しかし、これらの間に、新たな分離位置が形成されるように分離片を配置した構成としてもよい。この場合、図2に基づけば、仮想直線L1上に、第1分離位置P1と第2分離位置P2とを含む3個以上の分離位置が配置される。例えば、仮想直線L1上に第1分離位置P1と第2分離位置P2と3個の新たな分離位置とが配置される場合、第3分離位置P3を含め、合計で6個の分離位置が配置される。同じく、図5に示す原稿分離機構500に関連し、第4分離位置と第5分離位置との間に、新たな分離位置を形成されるように分離片を配置した構成としてもよい。この場合、図5に基づけば、仮想直線L2上に、第4分離位置と第5分離位置とを含む3個以上の分離位置が配置される。例えば、仮想直線L2上に第4分離位置と第5分離位置と1個の新たな分離位置とが配置される場合、第3分離位置P3を含め、合計で4個の分離位置が配置される。この他、原稿分離機構500に関連し、仮想直線L1上に、第1分離位置P1と第2分離位置P2とを含む3個以上の分離位置が配置され、さらに、仮想直線L2上に、第4分離位置と第5分離位置とを含む3個以上の分離位置が配置された構成としてもよい。第3分離片108による第3分離位置P3については、上述した原稿分離機構100,500を含む原稿分離機構と同一である。 In the document separation mechanism 100, the separation position is between the first separation position P1 and the second separation position P2 that are arranged on the upstream side in the transport direction of the document 300A compared to the third separation position P3. Not placed. However, a configuration may be adopted in which separation pieces are arranged so that a new separation position is formed between them. In this case, based on FIG. 2, three or more separation positions including the first separation position P1 and the second separation position P2 are arranged on the virtual straight line L1. For example, when the first separation position P1, the second separation position P2, and three new separation positions are arranged on the virtual straight line L1, a total of six separation positions including the third separation position P3 are arranged. Is done. Similarly, in relation to the document separation mechanism 500 shown in FIG. 5, a separation piece may be arranged so that a new separation position is formed between the fourth separation position and the fifth separation position. In this case, based on FIG. 5, three or more separation positions including the fourth separation position and the fifth separation position are arranged on the virtual straight line L2. For example, when the fourth separation position, the fifth separation position, and one new separation position are arranged on the virtual straight line L2, a total of four separation positions including the third separation position P3 are arranged. . In addition, in relation to the document separation mechanism 500, three or more separation positions including the first separation position P1 and the second separation position P2 are arranged on the virtual straight line L1, and further, on the virtual straight line L2, the first separation position P1 is arranged. A configuration may be adopted in which three or more separation positions including the four separation positions and the fifth separation position are arranged. The third separation position P3 by the third separation piece 108 is the same as the document separation mechanism including the document separation mechanisms 100 and 500 described above.
 さらに原稿分離機構500に関連し、第1分離片104を、第4分離片510より、回転軸150の軸心方向に沿って、分離ローラ102の一端側に配置する。そして、第2分離片106を、第5分離片512より、回転軸150の軸心方向に沿って、分離ローラ102の他端側に配置した構成としてもよい。このような場合についても、第1分離位置P1と第2分離位置P2との間に、新たな分離位置を配置し、第4分離位置と第5分離位置との間に、新たな分離位置を配置してもよい。例えば、仮想直線L1上に第1分離位置P1と第2分離位置P2と3個の新たな分離位置とが配置され、仮想直線L2上に第4分離位置と第5分離位置と1個の新たな分離位置とが配置される場合、第3分離位置P3を含め、合計で9個の分離位置が配置される。なお、第3分離片108による第3分離位置P3については、原稿分離機構500と同一である。つまり、第3分離位置P3と比較して搬送方向の上流側で、分離ローラ102の回転軸150に沿ったまたは平行な一の直線上に配置される分離位置の数は、第3分離位置P3の数より多くされていればよい。 Further, in relation to the document separation mechanism 500, the first separation piece 104 is disposed on one end side of the separation roller 102 along the axial direction of the rotation shaft 150 from the fourth separation piece 510. The second separation piece 106 may be arranged on the other end side of the separation roller 102 along the axial center direction of the rotation shaft 150 from the fifth separation piece 512. Even in such a case, a new separation position is disposed between the first separation position P1 and the second separation position P2, and a new separation position is disposed between the fourth separation position and the fifth separation position. You may arrange. For example, the first separation position P1, the second separation position P2, and three new separation positions are arranged on the virtual straight line L1, and the fourth separation position, the fifth separation position, and one new separation position are arranged on the virtual straight line L2. In other words, a total of nine separation positions including the third separation position P3 are arranged. The third separation position P3 by the third separation piece 108 is the same as that of the document separation mechanism 500. That is, the number of separation positions arranged on one straight line along or parallel to the rotation shaft 150 of the separation roller 102 on the upstream side in the transport direction as compared with the third separation position P3 is equal to the third separation position P3. As long as it is more than the number of.
 また、分離ローラ102の回転軸150に沿ったまたは平行な一の直線上に、複数、例えば、2個の分離位置が形成されるように2個の分離片を配置する。そして、この一の直線と比較し搬送方向の上流側となる他の直線上に、複数、例えば2個の分離位置が形成されるように2個の分離片を配置した構成としてもよい。なお、一の直線と比較し搬送方向の下流側には、分離片が配置されず、分離位置が形成されない。したがって、分離位置は、偶数個、具体的には4個配置される。この場合、他の直線上に配置される分離位置のうち、回転軸150の軸心方向における一端側に配置される分離位置は、一の直線上で、同じく一端側に配置される分離位置より、回転軸150の軸心方向に沿って、分離ローラ102の一端側に配置される。また、他の直線上に配置される分離位置のうち、回転軸150の軸心方向における他端側に配置される分離位置は、一の直線上で他端側に配置される分離位置より、回転軸150の軸心方向に沿って、分離ローラ102の他端側に配置される。また、一の直線上に配置される例えば2個の分離位置は、分離ローラ102の外周面における分離ローラ幅Wの方向の中心をとおる搬送方向の直線を挟み、この搬送方向の直線を中心として対称に配置されている。また、いずれか一方が、この中心を含む位置に配置されていてもよい。 Further, two separation pieces are arranged so that a plurality of, for example, two separation positions are formed on one straight line along or parallel to the rotation axis 150 of the separation roller 102. And it is good also as a structure which has arrange | positioned two isolation | separation pieces so that several, for example, two isolation | separation positions may be formed on the other straight line which becomes an upstream of a conveyance direction compared with this one straight line. Note that no separation piece is arranged on the downstream side in the transport direction as compared with one straight line, and no separation position is formed. Accordingly, an even number of separation positions, specifically four, are arranged. In this case, among the separation positions arranged on the other straight line, the separation position arranged on one end side in the axial direction of the rotating shaft 150 is on the same straight line than the separation position arranged on the one end side. The separation roller 102 is disposed on one end side along the axial direction of the rotation shaft 150. Further, among the separation positions arranged on the other straight line, the separation position arranged on the other end side in the axial direction of the rotating shaft 150 is more than the separation position arranged on the other end side on one straight line, It is arranged on the other end side of the separation roller 102 along the axial direction of the rotation shaft 150. Further, for example, two separation positions arranged on one straight line sandwich a straight line in the conveyance direction passing through the center in the direction of the separation roller width W on the outer peripheral surface of the separation roller 102, and center on this straight line in the conveyance direction. They are arranged symmetrically. Moreover, any one may be arrange | positioned in the position containing this center.
 上述した、原稿分離機構100以外の、原稿分離機構500およびその他の原稿分離機構によっても、原稿分離機構100の場合と同様の優れた効果を得ることができる。 Even with the document separation mechanism 500 and other document separation mechanisms other than the document separation mechanism 100 described above, excellent effects similar to those of the document separation mechanism 100 can be obtained.
 本実施形態で示す分離位置について、搬送方向において下流に位置する分離位置よりも、搬送方向の上流に位置する分離位置の方が、回転軸150に沿って端部に形成されている原稿分離機構であれば、本実施形態の効果を得ることができる。 With respect to the separation position shown in the present embodiment, the document separation mechanism formed at the end along the rotation shaft 150 is located at the separation position located upstream in the conveyance direction than the separation position located downstream in the conveyance direction. If it is, the effect of this embodiment can be acquired.
 100,500 原稿分離機構
 102 分離ローラ
 104 第1分離片
 106 第2分離片
 108 第3分離片
 300,300A,300B 原稿
 P1 第1分離位置
 P2 第2分離位置
 P3 第3分離位置
 W 分離ローラ幅
100, 500 Document separation mechanism 102 Separation roller 104 First separation piece 106 Second separation piece 108 Third separation piece 300, 300A, 300B Document P1 First separation position P2 Second separation position P3 Third separation position W Separation roller width

Claims (7)

  1.  複数枚重なり合った原稿から一枚の原稿を分離し、搬送する原稿分離機構であって、
     複数枚重なり合った原稿から第1原稿を分離する分離ローラと、
     先端部が前記分離ローラの外周面に近接して配置され、前記分離ローラによって搬送される前記第1原稿に付着した第2原稿を、前記第1原稿から分離する、第1分離片、第2分離片および第3分離片とを有し、
     前記第1分離片による前記第2原稿の第1分離位置は、前記第3分離片による前記第2原稿の第3分離位置と比較して、前記第1原稿の搬送方向の上流側で、かつ前記第3分離位置より、前記分離ローラの外周面における分離ローラ幅方向の一端側に配置され、
     前記第2分離片による前記第2原稿の第2分離位置は、前記第3分離位置と比較して、前記搬送方向の上流側で、かつ前記第3分離位置より前記分離ローラ幅方向の他端側に配置されていることを特徴とする原稿分離機構。
    A document separation mechanism that separates and transports one document from a plurality of documents that overlap each other,
    A separation roller for separating the first document from a plurality of stacked documents;
    A first separation piece, a second separation piece, which is disposed close to the outer peripheral surface of the separation roller and separates the second document attached to the first document conveyed by the separation roller from the first document. A separation piece and a third separation piece;
    The first separation position of the second document by the first separation piece is upstream in the transport direction of the first document compared to the third separation position of the second document by the third separation piece, and From the third separation position, disposed on one end side in the separation roller width direction on the outer peripheral surface of the separation roller,
    The second separation position of the second document by the second separation piece is upstream of the transport direction compared to the third separation position, and the other end of the separation roller width direction from the third separation position. A document separating mechanism characterized by being arranged on the side.
  2.  前記第3分離位置は、前記分離ローラ幅方向の中心を含むように配置されていることを特徴とする請求項1に記載の原稿分離機構。 2. The document separating mechanism according to claim 1, wherein the third separating position is disposed so as to include a center in the width direction of the separating roller.
  3.  前記第1分離位置および前記第2分離位置それぞれは、前記分離ローラの回転軸に沿った仮想直線上にあることを特徴とする請求項1に記載の原稿分離機構。 2. The document separation mechanism according to claim 1, wherein each of the first separation position and the second separation position is on an imaginary straight line along a rotation axis of the separation roller.
  4.  前記第1分離位置および前記第2分離位置それぞれは、前記分離ローラの回転軸に対して平行な前記仮想直線上にあることを特徴とする請求項3に記載の原稿分離機構。 4. The document separation mechanism according to claim 3, wherein each of the first separation position and the second separation position is on the virtual straight line parallel to a rotation axis of the separation roller.
  5.  前記原稿分離機構は、さらに、
     先端部が前記分離ローラの外周面に近接して配置され、前記分離ローラによって搬送される前記第1原稿に付着した前記第2原稿を、前記第1原稿から分離する、第4分離片および第5分離片を有し、
     前記第4分離片による前記第2原稿の第4分離位置は、前記第1分離位置より前記搬送方向の上流側で、かつ前記第1分離位置より前記分離ローラ幅方向の一端側に配置され、
     前記第5分離片による前記第2原稿の第5分離位置は、前記第2分離位置より前記搬送方向の上流側で、かつ前記第2分離位置より前記分離ローラ幅方向の他端側に配置されていることを特徴とする請求項1に記載の原稿分離機構。
    The document separation mechanism further includes:
    A fourth separation piece and a second separation piece are disposed adjacent to the outer peripheral surface of the separation roller and separate the second document attached to the first document conveyed by the separation roller from the first document. Have 5 separate pieces,
    A fourth separation position of the second document by the fourth separation piece is disposed upstream of the first separation position in the transport direction and on one end side in the separation roller width direction from the first separation position;
    The fifth separation position of the second document by the fifth separation piece is arranged on the upstream side in the transport direction from the second separation position and on the other end side in the separation roller width direction from the second separation position. The document separation mechanism according to claim 1, wherein the document separation mechanism is a document separation mechanism.
  6.  前記原稿分離機構は、前記第1分離片と前記第2分離片と前記第3分離片とを含む分離片を原稿分離機構全体として奇数個有することを特徴とする請求項1に記載の原稿分離機構。 2. The document separation mechanism according to claim 1, wherein the document separation mechanism has an odd number of separation pieces including the first separation piece, the second separation piece, and the third separation piece as a whole of the document separation mechanism. mechanism.
  7.  前記原稿分離機構は、さらに、
     前記第1分離片を、前記分離ローラの外周面側に付勢する第1付勢部と、
     前記第2分離片を、前記分離ローラの外周面側に付勢する第2付勢部と、
     前記第3分離片を、前記分離ローラの外周面側に付勢する第3付勢部とを有し、
     前記第1付勢部による前記第1分離片の第1付勢方向と、前記第2付勢部による前記第2分離片の第2付勢方向と、前記第3分離部による前記第3分離片の第3付勢方向とは、互いに平行な方向であることを特徴とする請求項1に記載の原稿分離機構。
    The document separation mechanism further includes:
    A first urging portion that urges the first separation piece toward the outer peripheral surface of the separation roller;
    A second urging portion for urging the second separation piece toward the outer peripheral surface of the separation roller;
    A third urging portion that urges the third separation piece toward the outer peripheral surface of the separation roller;
    The first urging direction of the first separation piece by the first urging portion, the second urging direction of the second separation piece by the second urging portion, and the third separation by the third separation portion. 2. The document separation mechanism according to claim 1, wherein the third urging direction of the pieces is a direction parallel to each other.
PCT/JP2011/050148 2010-03-24 2011-01-07 Document separation mechanism WO2011118239A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-067097 2010-03-24
JP2010067097A JP2011195325A (en) 2010-03-24 2010-03-24 Document separation mechanism

Publications (1)

Publication Number Publication Date
WO2011118239A1 true WO2011118239A1 (en) 2011-09-29

Family

ID=44672817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/050148 WO2011118239A1 (en) 2010-03-24 2011-01-07 Document separation mechanism

Country Status (2)

Country Link
JP (1) JP2011195325A (en)
WO (1) WO2011118239A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488440U (en) * 1990-12-13 1992-07-31
JPH05254684A (en) * 1992-03-13 1993-10-05 Ricoh Co Ltd Sheet feeder
JPH07144782A (en) * 1993-11-24 1995-06-06 Nec Corp Automatic paper feeder
JP2009249141A (en) * 2008-04-09 2009-10-29 Pfu Ltd Feeding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488440U (en) * 1990-12-13 1992-07-31
JPH05254684A (en) * 1992-03-13 1993-10-05 Ricoh Co Ltd Sheet feeder
JPH07144782A (en) * 1993-11-24 1995-06-06 Nec Corp Automatic paper feeder
JP2009249141A (en) * 2008-04-09 2009-10-29 Pfu Ltd Feeding device

Also Published As

Publication number Publication date
JP2011195325A (en) 2011-10-06

Similar Documents

Publication Publication Date Title
JP4982244B2 (en) Image reading device
JP6164401B2 (en) Paper discharge device and image forming apparatus having the same
JP2011136828A (en) Image recording apparatus
JP2017088259A (en) Medium transportation device and image reading device
CN109219569B (en) Document feeder
JP2014099827A (en) Automatic document feeder and image forming device
JP2017171425A (en) Medium transportation unit, image reader and recording device
JP2012246098A (en) Sheet transfer device, and information reading device
WO2011118239A1 (en) Document separation mechanism
JP5652422B2 (en) Sheet conveying apparatus and image reading apparatus
JP6070148B2 (en) Feeding device
WO2011118243A1 (en) Image processing device
JP6944826B2 (en) Sheet transfer device and image reader
JP5663508B2 (en) Sheet conveying apparatus and image forming apparatus including the same
JP2019001594A (en) Feeding roller, sheet conveying apparatus, and image reading apparatus
JP4563963B2 (en) Paper transport device, image forming device
JP6941491B2 (en) Sheet feeder and image reader
JP7070732B2 (en) Media transfer device, image reader, recording device
JP5307945B1 (en) Image forming apparatus
JP2017081658A (en) Medium feeding device and image reading device
JP6761202B2 (en) Media transfer device, image reader, recording device
JP6730669B2 (en) Medium feeding device, image reading device, recording device
JP2011057372A (en) Paper feeding and separating device and image forming device
JP2015101411A (en) Sheet feeding device and image formation device
JP2019116376A (en) Sheet feeding device and image reading device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11759048

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11759048

Country of ref document: EP

Kind code of ref document: A1