US20170121144A1 - Paper ejection tray assembly with flap part - Google Patents

Paper ejection tray assembly with flap part Download PDF

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Publication number
US20170121144A1
US20170121144A1 US15/174,874 US201615174874A US2017121144A1 US 20170121144 A1 US20170121144 A1 US 20170121144A1 US 201615174874 A US201615174874 A US 201615174874A US 2017121144 A1 US2017121144 A1 US 2017121144A1
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US
United States
Prior art keywords
paper
tray assembly
ejection
flap part
ejected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/174,874
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English (en)
Inventor
Shota Otsuka
Masashi Matsumoto
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PFU Ltd
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PFU Ltd
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Assigned to PFU LIMITED reassignment PFU LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MATSUMOTO, MASASHI, OTSUKA, Shota
Publication of US20170121144A1 publication Critical patent/US20170121144A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/20—Pile receivers adjustable for different article sizes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/70—Article bending or stiffening arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/02—Pile receivers with stationary end support against which pile accumulates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/26—Auxiliary devices for retaining articles in the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4212—Forming a pile of articles substantially horizontal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5121—Bending, buckling, curling, bringing a curvature
    • B65H2301/51214—Bending, buckling, curling, bringing a curvature parallel to direction of displacement of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B65H2402/31—Pivoting support means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B65H2402/32—Sliding support means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
    • B65H2402/46—Table apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1114—Bottom with surface portions curved in lengthwise direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1115—Bottom with surface inclined, e.g. in width-wise direction
    • B65H2405/11151—Bottom with surface inclined, e.g. in width-wise direction with surface inclined upwardly in transport direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1116—Bottom with means for changing geometry
    • B65H2405/11161—Bottom with means for changing geometry by at least a protruding portion arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1116—Bottom with means for changing geometry
    • B65H2405/11162—Front portion pivotable around an axis perpendicular to transport direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1116—Bottom with means for changing geometry
    • B65H2405/11164—Rear portion extensible in parallel to transport direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1116—Bottom with means for changing geometry
    • B65H2405/11164—Rear portion extensible in parallel to transport direction
    • B65H2405/111646—Rear portion extensible in parallel to transport direction involving extension members pivotable around an axis parallel to bottom surface and perpendicular to transport direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/14—Details of surface
    • B65H2405/141—Reliefs, projections
    • B65H2405/1412—Ribs extending in parallel to feeding/delivery direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/39—Scanning

Definitions

  • Embodiments discussed in the present specification relates to a paper ejection tray assembly which stacks ejected paper.
  • Japanese Patent Publication No. 2000-327204A discloses forming a cutaway part in a sheet stacking surface which stacks the sheets, providing a movable sheet receiver which can move up and down in this cutaway part, and allowing the movable sheet receiver to descend due to its own weight in accordance with the increase of the number of sheets which are ejected to the sheet stack table so that even curled sheets can be smoothly stacked without reducing the maximum sheet stacking capacity.
  • the paper could not be given sufficient stiffness and paper eject jams could occur.
  • Japanese Patent Publication No. 7-179259A discloses an image forming apparatus in which, when pulling out a slide tray part, a rib-shaped projection is pushed upward for the purpose of preventing an ejected sheet from falling off from a paper ejection tray and enabling stacking to a suitable position at all times.
  • the stacked paper is pushed upward by the rib-shaped projection, but the stacked paper could be pushed off due to friction with the ejected paper.
  • a paper ejection tray assembly is a paper ejection tray assembly for ejecting paper in an ejecting direction in an image reading device, which system is comprised of a tray body including a stacking surface for stacking an ejected paper, and a slide tray part which is pulled out from the tray body by a force; and a flap part which moves to an inclined position by the force when the slide tray part is pulled out.
  • a height of the flap part from the stacking surface, at the inclined position gradually becomes higher from an upstream side toward a downstream side of the ejection direction to guide an ejected paper.
  • FIG. 1 is a perspective view showing an image reading apparatus 1 to which a paper ejection tray assembly 20 is attached.
  • FIG. 2 is a cross-sectional view along line II-II of FIG. 1 showing an ejection slot and paper ejection tray assembly 20 of an image reading apparatus.
  • FIG. 3 is a schematic view showing the state at which ribs are used to stiffen the paper.
  • FIG. 4A is a view of the side surface of a rib.
  • FIG. 4B is a plan view of a rib.
  • FIG. 5A is a cross-sectional view along the line V-V of FIG. 1 and a cross-sectional view showing the state at which ribs are attached to the paper ejection tray assembly 20 .
  • FIG. 5B is a cross-sectional view showing the state at which ribs are stored in the paper ejection tray assembly 20 .
  • FIG. 6 is a perspective view showing a paper ejection tray assembly 20 showing the state where a slide tray part 202 is pulled out.
  • FIG. 7 is a side surface view of a paper ejection tray assembly 20 showing the state where the slide tray part 202 is pulled out and a view showing the state where paper is stacked on the paper ejection tray assembly 20 .
  • FIG. 8A is a cross-sectional view showing the state where a flap part 220 is stored in the paper ejection tray assembly 20 .
  • FIG. 8B is a cross-sectional view showing the state where the slide tray part 202 has been pulled out and the flap part 220 moves to an inclined position.
  • FIG. 9 is a perspective view showing a paper ejection tray assembly 21 provided with a pair of ribs.
  • FIG. 10 is a perspective view showing a paper ejection tray assembly 22 provided with a flap part.
  • FIG. 1 is a perspective view showing an image reading apparatus 1 to which a paper ejection tray assembly 20 of the present embodiment is attached.
  • FIG. 2 is a cross-sectional view along line II-II of FIG. 1 showing a state where the paper ejection tray assembly 20 is attached to a reading apparatus body 10 of the image reading apparatus 1 .
  • the image reading apparatus 1 is comprised of the reading apparatus body 10 which conveys a document (below, called “paper 40 ”) while reading the image, a paper feed system 30 which continuously feeds a plurality of sheets of paper 40 to the reading apparatus body 10 , an ejection slot 11 which ejects the paper 40 which is read by the reading apparatus body 10 , and a paper ejection tray assembly 20 which stacks the plurality of sheets of paper 40 which were ejected from the ejection slot 11 .
  • the illustrated image reading apparatus 1 of the embodiment is configured to be able to be made more compact by folding up the paper ejection tray assembly 20 when not in use.
  • the image reading apparatus 1 in which the paper ejection tray assembly 20 is attached is one example. So long as an apparatus which ejects paper from an ejection slot 11 , the apparatus to which the paper ejection tray assembly 20 is attached may be an ink jet printer or other printing apparatus or an image copying apparatus.
  • the paper eject mechanism of the reading apparatus body 10 of the image reading apparatus 1 and the paper feed mechanism of the paper feed system 30 can be replaced with conventional mechanisms, so detailed explanations will be omitted.
  • the paper ejection tray assembly 20 is configured so as to be supported by arms 204 which are connected to the reading apparatus body and so as to be provided under the ejection slot 11 of the reading apparatus body 10 which ejects the paper 40 , in an ejection direction of the paper 40 (arrow Y-direction of FIGS. 1 and 2 ) in the image reading apparatus 1 , when the image reading apparatus 1 is being used.
  • the paper ejection tray assembly 20 comprises a tray body 201 which includes a stacking surface 201 a for stacking the ejected paper 40 and a pair of movable ribs 210 a , 210 b which are arranged a predetermined width W apart (in other words, predetermined distance apart from each other) in a direction (arrow X direction of FIG. 1 ) perpendicular to the ejection direction of the paper 40 (arrow Y-direction of FIGS. 1 and 2 ) and which project out from the stacking surface 201 a of the tray body 201 when the paper 40 is ejected from the ejection slot 11 .
  • the projecting pair of ribs 210 a , 210 b respectively have first inclined surfaces 211 which gradually become higher in heights from stacking surface 201 a from the downstream side to the upstream side of the ejection direction of the paper 40 so as to guide the paper 40 which is ejected from the ejection slot 11 .
  • the pair of ribs 210 a , 210 b respectively have second inclined surfaces 212 which gradually become higher in heights from the stacking surface 201 a from the upstream side to the downstream side of the ejection direction of the paper.
  • the pair of ribs 210 a , 210 b are formed so that the angle ⁇ between the first inclined surfaces 211 and second inclined surfaces 212 become 90 degrees or more, that is, an obtuse angle.
  • the pair of ribs 210 a , 210 b are arranged so that the paper 40 which is ejected from the ejection slot 11 lands on the first inclined surfaces 211 of the pair of ribs 210 a , 210 b when ejected as shown in FIG. 2 .
  • the front end of the paper 40 does not directly land on the stacking surface 201 a of the tray body 201 .
  • the first inclined surfaces 211 are inclined, so the landing angle ⁇ on the first inclined surfaces can be made smaller than the landing angle when the paper 40 directly lands on the stacking surface 201 a .
  • the back ends of the pair of ribs 210 a , 210 b should be set at positions so that the distances from the ejection slot 11 become 0 mm to 30 mm.
  • the angle ⁇ between the first inclined surfaces 211 and the second inclined surfaces 212 is an obtuse angle, so, for example, even if the front end of the ejected paper 40 curls downward, it does not catch on the top parts 214 of the ribs and can be pushed back to the first inclined surface 211 sides to thereby enable buckling to be prevented. If the angle ⁇ is smaller than 90 degrees, if the front end of the paper curls downward, it will descend along the second inclined surfaces 212 and buckling may occur.
  • the pair of ribs 210 a , 210 b are, as shown in FIG. 1 , arranged a predetermined width apart. This width W is preferably based on the size of the paper with a high frequency of being ejected. It is determined so that the side parts 40 a , 40 b of the paper 40 (see FIG. 3 ) strike the first inclined surfaces 211 . If the size of the covered paper is the A3 size, the pair of ribs 210 a , 210 b are preferably arranged assuming a size of a width W of 150 mm to 290 mm or less. Further, if the size of the covered paper is the A4 size, the pair of ribs 210 a , 210 b are preferably arranged assuming a size of a width W of 100 mm to 200 mm or less.
  • FIG. 3 is a schematic view showing the state where the pair of ribs 210 a , 210 b are used to stiffen the paper.
  • the paper 40 is supported at its side parts 40 a , 40 b by the ribs 210 a , 210 b and the paper 40 is bent in a recessed shape in the width direction (arrow X direction of FIG. 1 ) to stiffen it.
  • the paper 40 which is stiffened as shown in FIG. 3 becomes difficult to bend in the paper ejection direction (arrow Y-direction of FIG. 1 ), so buckling is prevented.
  • the pair of ribs 210 a , 210 b are arranged along the paper ejection direction (arrow Y-direction of FIG. 1 ) of the tray body 201 line symmetrically with respect to the center axis of the paper ejection tray assembly 20 .
  • the paper feed system 30 is a system which feeds the paper 40 with reference to the center. According to this, paper is ejected with reference to the center of the paper ejection tray assembly 20 .
  • the pair of ribs are arranged with reference to the paper eject position.
  • the pair of ribs 210 a , 210 b have two side surfaces 213 which are arranged inclined to the left and right of the first inclined surfaces 211 .
  • the two side surface 213 being inclined as shown in FIG. 3 , for example, even when paper with a width of a size somewhat larger than the width W2 of the inside of the pair of ribs 210 a , 210 b is ejected, the two side parts of the paper contact the corresponding side surfaces 213 . Due to this, the paper is stiffened, the load on the front end of the paper at the time of paper ejection is reduced, and buckling is prevented.
  • the pair of ribs 210 a , 210 b are respectively configured to be able to be stored in the tray body 201 .
  • FIG. 4A shows the side surface of the rib 210 a in the state before being attached to the tray body 201
  • FIG. 4B shows a plan view of the rib 210 a .
  • the rib 210 b is formed in the same shape as the rib 210 a , so an explanation therefore will be omitted.
  • the bottom part of the rib 210 a is provided with a gripping part 215 which grips a rotary shaft 207 which is formed at the tray body 201 (see FIG. 5 ) at the end part in the downstream side of the paper ejection direction and stoppers 216 at the left and right of the bottom part of the rib 210 a.
  • FIG. 5A is a cross-sectional view along the line V-V of FIG. 1 and a cross-sectional view showing the state where the rib 210 a is attached to the tray body 201 .
  • FIG. 5B is a view showing the state where the rib 210 a descends due to the load of the paper which is stacked on the tray body 201 and is stored inside the tray body 201 .
  • the gripping part 215 of the rib 210 a grips the rotary shaft 207 which is provided at the tray body 201 .
  • the rib 210 a is attached to be able to pivot about the rotary shaft 207 in the arrow C direction of FIG. 5A .
  • the bottom part of the rib 210 a is supported by a coil spring 217 (elastic member) which is provided at the tray body 201 .
  • a coil spring 217 elastic member
  • the height H of the rib 210 a does not change.
  • the rib 210 a pivots downward and the height H of projection of the rib 210 a gradually becomes lower.
  • the rib 210 a is stored inside the tray body 201 .
  • the stacked paper reduces the height of the rib 210 a , so it is possible to realize a maximum number of sheets stacked similar to the past.
  • the coil spring 217 which supports the rib 210 a is one example of the elastic member.
  • the coil spring 217 may also be rubber.
  • stoppers 216 which abut against the tray body 201 are provided, so the rib 210 a will not rise up from the tray body 201 even if the rib 210 a is biased upward by the coil spring 217 .
  • the rib 210 a shown in the figure is provided with the rotary shaft 207 (pivot point) at the downstream side in the paper ejection direction, but it may also be provided with the rotary shaft 207 at the upstream side. Providing the rotary shaft 207 at the downstream side like in the illustrated embodiment is preferable since the rib 210 a which easily receives the load from the stacked paper 40 easily descends.
  • the height H by which the rib 210 a projects out from the stacking surface 201 a is preferably 5 mm or more so as to sufficiently stiffen the paper 40 .
  • the height H of the rib 210 a is limited in accordance with the thickness of the tray body 201 considering the fact that the rib 210 a is stored in the tray body 201 .
  • the angle ⁇ of inclination of the first inclined surface 211 or the rib 210 a with respect to the stacking surface 201 a is formed to 15 degrees.
  • the angle ⁇ of inclination may be formed so that the inclination angle becomes 10 degrees to 20 degrees so that buckling does not occur when the front end of the ejected paper 40 moves to the stacking surface 201 a.
  • the paper ejection tray assembly 20 of the present embodiment further has a slide tray part 202 which is provided to be able to be pulled out at the downstream side of the tray body 201 in the paper ejection direction and a flap part 220 which moves to an inclined position linked with the operation of the slide tray part 202 being pulled out from the tray body 201 .
  • the flap part 220 is arranged at a downstream side of the ejection direction of the paper 40 (arrow Y-direction) via a flat part 208 of the stacking surface 201 a which has a predetermined width D with respect to the pair of ribs 210 a , 210 b.
  • FIG. 6 is a perspective view of the paper ejection tray assembly 20 showing the state of pulling out the slide tray part 202 which is provided at the tray body 201
  • FIG. 7 is a side surface view of the same.
  • the slide tray part 202 is comprised of a first slide part 202 a which slides out from the tray body 201 and a second slide part 202 b which slides out from the first slide part 202 a .
  • a handle 205 is provided at the end part of the second slide part 202 b at the downstream side. The user can pull the handle 205 to pull out the slide tray part 202 from the tray body 201 by a force.
  • the flap part 220 of the tray body 201 moves to the inclined position linked with the slide tray part 202 by the force when the slide tray part 202 is pulled out.
  • the flap part 220 is arranged so that, at the inclined position, the height of the flap part 220 from the stacking surface 201 a gradually becomes higher from the upstream side toward the downstream side of the ejection direction of the paper as shown in FIG. 6 and FIG. 7 to guide the ejected paper.
  • the ejected paper 40 is lifted upward by the flap part 220 .
  • the paper 40 which rides over the flap part 220 is raised once in the air and then lands on the slide tray part 202 .
  • the contact area with the stacked paper 41 is reduced by exactly the amount of area of the paper which is raised in the air. The contact area is reduced, so the frictional force between the stacked paper 41 and the ejected paper 40 is also reduced, so the stacked paper 41 does not move due to the ejected paper 40 and push-off can be reduced.
  • the flap part 220 is a plate-shaped member such as shown in FIG. 6 . It is configured so as to lift up the entire ejected paper 40 in its width direction (arrow X direction of FIG. 6 ). To make the paper 40 rise up once in the air, the length W3 in the width direction is preferably 50 mm or more, while the length L2 in the ejection direction is preferably 20 mm or more.
  • the height H2 from the stacking surface of the end part of the downstream side of the flap part 220 at the inclined position is preferably 10 mm to 40 mm, while the inclination angle ⁇ 2 of the flap part 220 (see FIG. 8B ) is preferably 10 degrees to 30 degrees. If the height H2 is lower than 10 mm or the inclination angle ⁇ 2 is smaller than 10 degrees, the area of the paper 40 which is raised up in the air becomes smaller and therefore the effect of reducing the friction between the sheets of paper is difficult to obtain. If the height H2 is higher than 40 mm or the inclination angle ⁇ 2 is larger than 30 degrees, the paper 40 cannot climb up the flap part 220 . Further, the paper 40 raised up in the air lands on the slide tray part 202 by an acute angle, so the front end of the paper 40 is liable to end up buckling.
  • the length L from the ejection slot 11 to the upstream side end part of the flap part 220 is preferably made 80 mm to 160 mm. Further, when A4 size paper is covered, the length L may be made 50 mm to 120 mm.
  • FIG. 8A is a cross-sectional view showing the state where the flap part 220 is held stored at the tray body 201 of the paper ejection tray assembly 20
  • FIG. 8B is a cross-sectional view showing the state where the slide tray part 202 is pulled out and the flap part 220 moves to the inclined position.
  • the flap part 220 is provided at its back surface with a support part 221 which supports the flap part 220 .
  • the first slide part 202 a of the slide tray part 202 is provided at the upstream side end part with a projecting part 206 which engages with the support part 221 of the flap part 220 when the slide tray part 202 is pulled out.
  • the flap part 220 is configured to rise up in the arrow E direction pivoting about the upstream side end part 220 a if the support part 221 and the projecting part 206 are engaged. By just pulling out the slide tray part 202 , the flap part 220 is raised up to the inclined position, so the user never forgets to raise up the flap part 220 .
  • the paper 41 which is lifted up by the flap part 220 and stacked becomes easier to take out due to the upward curve compared with when the ejected paper is stacked flat. Further, by being set at the inclined position, the flap part 220 performs the role as a stopper when for example paper shorter than the length of the tray body 201 in the paper ejection direction is ejected.
  • FIG. 9 is a perspective view showing a paper ejection tray assembly 21 of an embodiment separate from the paper ejection tray assembly 20 shown in FIG. 1 to FIG. 8 .
  • the paper ejection tray assembly 21 can be provided below the ejection slot 11 of the image reading apparatus 1 shown in FIG. 1 instead of the paper ejection tray assembly 20 .
  • the paper ejection tray assembly 21 is provided with a tray body 201 which has a stacking surface 201 a for stacking the ejected paper 40 and a pair of ribs 210 a , 210 b which are arranged a predetermined width apart in the direction perpendicular to the ejection direction of the paper 40 (arrow Y-direction of FIG.
  • the slide tray part 202 is comprised of a first slide part 202 a which slides from the tray body 201 and a second slide part 202 b which slides from the first slide part 202 a .
  • the paper ejection tray assembly 21 is not provided with the flap part 220 of the paper ejection tray assembly 20 shown in FIG. 1 to FIG. 8 .
  • the shapes and functions of the pair of ribs 210 a , 210 b of the paper ejection tray assembly 21 are similar to the pair of ribs 210 a , 210 b of the paper ejection tray assembly 20 , so explanations will be omitted.
  • the paper ejection tray assembly 21 can be provided with a pair of ribs 210 a , 210 b so as to stiffen the ejected paper 40 . Further, the pair of ribs 210 a , 210 b respectively have first inclined surfaces 211 which guide the ejected paper 40 , so the landing angle when the paper 40 lands on the paper ejection tray assembly becomes smaller. For this reason, buckling of the paper 40 becomes harder to occur and in turn paper eject jams can be prevented.
  • FIG. 10 is a perspective view showing a paper ejection tray assembly 22 of an embodiment separate from the paper ejection tray assembly 20 shown in FIG. 1 to FIG. 8 .
  • the paper ejection tray assembly 22 can be provided below the ejection slot 11 of the image reading apparatus 1 instead of the paper ejection tray assembly 20 .
  • the paper ejection tray assembly 22 has a tray body 201 which has a stacking surface 201 a for stacking the ejected paper 40 and a slide tray part 202 which is provided to be able to be pulled out from the tray body 201 . Further, a flap part 220 which moves to an inclined position linked with the operation of the slide tray part 202 being pulled out from the tray body 201 is provided.
  • the flap part 220 is arranged so that, at the inclined position, the height from the stacking surface 201 a becomes gradually higher from the upstream side to the downstream side in the ejection direction of the paper 40 (Y-direction of FIG. 10 ) so as to guide the ejected paper 40 .
  • the paper ejection tray assembly 22 is not provided with the pair of ribs 210 a , 210 b which the paper ejection tray assembly 20 shown in FIG. 1 to FIG. 8 is provided with.
  • the shapes and functions of the slide tray part 202 and flap part 220 which the paper ejection tray assembly 22 is provided with are similar to the slide tray part 202 and flap part 220 of the paper ejection tray assembly 20 , so explanations will be omitted.
  • the paper ejection tray assembly 22 is provided at the stacking surface 201 a with the flap part 220 which moves to an inclined position. Due to this, the ejected paper 40 is lifted up by the flap part 220 . The paper 40 which rides over the flap part 220 is raised up once in the air, then lands on the slide tray part 202 . At this time, the contact area with the stacked paper is reduced by the area of the paper raised up in the air. Since the contact area is reduced, the frictional force between the stacked paper and the ejected paper is also reduced, so the stacked paper does not move due to paper ejection and push-off can be reduced.
  • the paper 40 which is ejected from the ejection slot 11 passes between the pair of ribs 210 a , 210 b and is further raised up by the flap part 220 .
  • the paper 40 is stacked in a curved manner. For this reason, the frictional area between the paper sheets is reduced, buckling of the ejected paper is prevented, and the ejected paper can be prevented from pushing off stacked paper.
  • the ejected paper is lifted up by the flap part. Further, since rising up once in the air, the paper which rides over the flap part is reduced in contact area with the stacked paper by exactly the area of the paper which rises up. The frictional force between the stacked paper and the ejected paper is also reduced, so the stacked paper does not move due to the ejected paper and push-off can be lightened.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
US15/174,874 2015-11-02 2016-06-06 Paper ejection tray assembly with flap part Abandoned US20170121144A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015216138A JP2017088262A (ja) 2015-11-02 2015-11-02 排紙トレイ装置
JP2015-216138 2015-11-02

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US20170121144A1 true US20170121144A1 (en) 2017-05-04

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US15/174,874 Abandoned US20170121144A1 (en) 2015-11-02 2016-06-06 Paper ejection tray assembly with flap part

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US (1) US20170121144A1 (ja)
JP (1) JP2017088262A (ja)
CN (1) CN106629199A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180250960A1 (en) * 2015-12-09 2018-09-06 Hewlett-Packard Development Company, L.P. Media tray with ramp
US11274007B2 (en) * 2016-07-19 2022-03-15 Canon Kabushiki Kaisha Sheet discharge apparatus and image forming apparatus including the same

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Publication number Priority date Publication date Assignee Title
CN113281970B (zh) * 2020-02-20 2024-04-30 东芝泰格有限公司 图像处理装置及纸张供给方法
CN111761946A (zh) * 2020-07-10 2020-10-13 熊浩浩 一种防止打印机出纸口堵塞的托板

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0395065A (ja) * 1989-09-06 1991-04-19 Ricoh Co Ltd 排紙装置
JPH07179259A (ja) * 1993-12-24 1995-07-18 Ricoh Co Ltd 画像形成装置
JPH09156818A (ja) * 1995-12-08 1997-06-17 Fuji Photo Film Co Ltd シート排出トレー
JP2004026418A (ja) * 2002-06-26 2004-01-29 Canon Finetech Inc 排紙トレイユニット
JP4678480B2 (ja) * 2004-09-15 2011-04-27 ブラザー工業株式会社 画像記録装置及びそれに適用する給紙トレイ
JP4804298B2 (ja) * 2006-02-20 2011-11-02 京セラミタ株式会社 用紙排出トレイ及びそれを備えた画像形成装置
JP4900929B2 (ja) * 2006-09-14 2012-03-21 キヤノン電子株式会社 排紙トレイ、シート材搬送装置、画像読取装置、画像形成装置
JP2013001528A (ja) * 2011-06-17 2013-01-07 Brother Industries Ltd シート支持装置
JP2013237544A (ja) * 2012-05-16 2013-11-28 Riso Kagaku Corp 排紙トレイ
JP5836307B2 (ja) * 2013-04-05 2015-12-24 京セラドキュメントソリューションズ株式会社 排紙トレイ及び画像形成装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180250960A1 (en) * 2015-12-09 2018-09-06 Hewlett-Packard Development Company, L.P. Media tray with ramp
US10875736B2 (en) * 2015-12-09 2020-12-29 Hewlett-Packard Development Company, L.P. Media tray with ramp
US11274007B2 (en) * 2016-07-19 2022-03-15 Canon Kabushiki Kaisha Sheet discharge apparatus and image forming apparatus including the same

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CN106629199A (zh) 2017-05-10

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