JP2007001717A - Sheet delivery tray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a delivery tray in an inexpensive and simple constitution capable of increasing the marginal height of the tray root part from the sheet path in the sheet delivery part while the height of product is suppressed. <P>SOLUTION: The delivery tray whereon sheets delivered from a device are stacked is formed on a multi-stage system used upon drawing out a sub-tray from the delivery tray at the time of service and configured so that the sheet stacking surface of the delivery tray is movable, in which the sheet stacking surface is moved simultaneously with movement of the sub-tray. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording apparatus such as a printer, a copying machine, a printing apparatus, and a facsimile machine including a paper discharge tray, and a paper discharge tray related to a reading device such as a scanner.

  In a recording apparatus such as a printer, a copying machine, or a facsimile, in order to form an image on a sheet material, the sheet material stacked on the sheet material stacking unit is separated one by one, and the sheet material separated in the sheet material transport unit Are conveyed to the recording unit, and after image formation, the sheet material is discharged from the discharge unit to the outside of the apparatus, and the discharged sheet material is stacked on a discharge tray.

  As shown in FIGS. 6A, 6B, and 6C, there are a plurality of front doors of the printer, and when the apparatus is used, the front door is opened and the tray is pulled out. ing.

  The front door 100 includes a front cover 101, a back cover 102, and a sub paper discharge tray 103, which are external when the apparatus is not used, and is attached to the apparatus main body so as to be able to rotate and open.

  By constructing a plurality of trays so that the sub discharge tray 103 is pulled out, the length of the tray required to hold the discharged sheet material without increasing the height of the front door 100 during storage. Can be secured.

Some of the front doors have a configuration in which the front door is suddenly opened when the front door is opened by a torque limiter or the like, and an impact when the front door is opened is absorbed.
JP 2005-53592 A

  However, when trying to reduce the height of the device, the height of the front door itself also decreases, so the number of sub discharge trays increases to secure the length of the discharge tray necessary for stacking sheet materials. End up. Further, when trying to increase the sheet discharge speed, the tray length necessary for stacking the sheet material may become long, which also increases the number of sub discharge trays.

  As the number of sub discharge trays increases, the thickness of the front door increases. For this reason, when the front cover is configured so that the height of the front cover is the same when the front door is open, the height of the back cover increases as the thickness increases. The step will be smaller. If this level difference is small, the sheet material stacked on the output tray will be pushed out by the next sheet material, or the trailing edge of the sheet material stacked on the tray will float due to static electricity, etc. When the material is caught in the device, or the sheet material once put on the tray by automatic double-sided printing etc. is drawn into the device and the back side is printed, the previous sheet material is likely to be drawn together. There's a problem.

  On the other hand, if you try to make the front door thick without changing the height of the back cover and paper discharge unit, the front cover must protrude to the bottom of the device or the height of the paper discharge unit must be increased. Will be high.

  Further, if a torque limiter is provided in order to prevent an impact sound when the front door is opened, a cost is required and a space for mounting the torque limiter is also required. Also, if a damper made of rubber or a spring member is provided and the damper and the front door come into contact with each other to eliminate the impact sound, it is difficult to stabilize the opening angle of the front door, and the loadability of the sheet material is reduced. There is a risk that it cannot be maintained.

  Accordingly, the present invention has been made to solve such a conventional problem, and an object thereof is to provide a discharge tray having a simpler, cheaper and smaller configuration.

  In order to achieve the above object, a typical configuration according to the present invention is a discharge tray on which sheet materials discharged from the apparatus are stacked, and a multi-stage tray that is used by pulling out a discharge sub-tray from the discharge tray during use. The sheet material stacking surface of the sheet discharge tray is configured to be movable, and the sheet material stacking surface moves in conjunction with movement of the sheet discharge subtray.

  The sheet material stacking surface may be rotated around a fulcrum provided downstream in the sheet material conveyance direction.

  The sheet material stacking surface may be operated by its own weight in conjunction with the paper discharge sub-tray.

  Further, the sheet material stacking surface may be biased by a spring or the like and operated in conjunction with the paper discharge sub-tray.

  Further, in a device that is attached to the main body of the apparatus so as to be pivoted and opened and that stacks the sheet material to be discharged, and is used by pulling out the paper discharge sub-tray from the paper discharge tray when in use. Positioning portions that contact and position the paper discharge tray are provided on the apparatus main body side and the paper discharge tray side, respectively, and an elastic member, such as a rubber material, a spring, or the like, as a damper for opening the paper discharge tray is provided. A damper abutting portion that abuts against the elastic member is provided on the discharge tray side on the apparatus body side, and the damper abutting portion is configured to operate in conjunction with the discharge sub-tray. Sometimes, the elastic member and the damper abutting portion abut before the sheet discharge tray positioning portion abuts, and when the sheet feeding sub-tray is pulled out during use, the damper abutting portion is It operates in a direction away from sexual member, the positioning portion provided on the paper discharge tray and the apparatus main body, characterized in that abutment.

  Further, the damper contact part is formed on a member constituting the sheet material stacking surface.

  According to the present invention, it is possible to secure a certain amount or more of the height from the paper discharge unit to the paper discharge tray while suppressing the height of the device, and to prevent the sheet material from being discharged and pulled into or out of the device. I can do it. Further, it is possible to perform positioning with a damper when the paper discharge tray is opened and a paper discharge tray when it is used in an inexpensive configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are perspective views of a recording apparatus according to an embodiment of the present invention. FIG. 1 is a use state in which a paper feed tray and a paper discharge tray are opened and opened. FIG. Indicates the unused state. 3 is a detailed sectional view of the front door mounting portion when not in use, FIG. 4 is a detailed sectional view of the front door mounting portion when the front door is opened, and FIG. 5 is a detailed sectional view of the front door mounting portion when in use. is there.

  The recording apparatus 1 of the present embodiment is a so-called ink jet printer, and feeds only one sheet from the sheet bundle S stacked on the sheet feeding unit 2. Then, an image is recorded on the sheet S by a recording unit (not shown), and the recorded sheet S is discharged and stacked and held on the paper discharge unit 3. The mechanical portions of the paper feeding unit 2, the recording unit, and the paper discharging unit 3 are installed on a base 4, and an outer cover 5 is covered so as to cover these mechanical parts, and the outer peripheral frame portion is fixed to the base 4. Yes.

  The paper feed unit 2 and the paper discharge unit 3 are respectively provided with a paper feed tray 21 and a paper discharge tray 31 that are supported by an X-direction shaft so as to be opened and closed. The support shaft 4 a and the paper discharge port 4 b of the paper discharge tray 31 are configured by the base 4, and the support shaft 5 a and the paper supply port 5 b of the paper supply tray 21 are configured by the exterior cover 5. The paper feed tray 21 has a slide storage type paper feed subtray 22 and the paper discharge tray 31 has a multistage slide storage type paper discharge subtray A32, a paper discharge subtray B33, a paper discharge subtray C34, a front cover 35 for storing the paper, and a back cover. The back cover 36 is attached to the front cover 35 movably around a back cover support shaft 35 a provided on the front cover 35. FIG. 1 shows a use state in which all the paper supply / discharge trays are unfolded, and FIG. 2 shows a non-use state in which all the supply / discharge trays are stored. In the use state, the sheet supply / discharge tray constitutes a sheet stacking surface. In the non-use state, the paper supply / discharge tray covers the paper discharge port 4b and the paper supply port 5b and fits in a compact manner, and the stacking side of the tray is closed inward so that functionally necessary ribs and unevenness are hidden. It is configured.

  Next, the details around the attachment portion of the paper discharge tray 31 and the base 4 will be described (FIGS. 3 to 5).

  The base 4 is provided with a discharge tray positioning surface 4c that is positioned when the discharge tray 31 is opened, and a damper member 4d that absorbs an impact when the discharge tray is opened. The front cover 35 is provided with a base abutting portion 35b that comes into contact with the paper discharge tray positioning surface 4c provided on the base during use, and the back cover 36 has a damper contact that comes into contact with the damper member 4d when the paper discharge tray is opened. A portion 36a is provided and is pushed up from below by the back cover push-up portion 32a of the paper discharge sub-tray A32.

  In this state, when the paper discharge tray is opened, the damper abutting portion 36a of the back cover 36 and the damper member are brought into contact with the base abutting portion 35b of the front cover 35 and the paper discharge tray positioning surface 4c of the base 4. 4d abuts and absorbs shock and vibration when the paper discharge tray is opened.

  When the paper discharge sub-tray is pulled out for use, the paper discharge sub-tray A32 is pulled out as shown in FIG. 5, so that the back cover 36 rotates by its own weight around the support shaft 35a of the front cover 35, and the damper contacts. The portion 36a and the damper member 4d are separated from each other, and accordingly, the base abutting portion 35b of the front cover 35 and the discharge tray positioning surface 4c of the base 4 are brought into contact with each other to determine the opening angle of the discharge tray 31.

  In the non-use state, the discharge sub-trays A to C are inserted between the front cover 35 and the back cover 36, so the discharge tray 31 is thick. However, in the use state, the back cover is as described above. Since 36 rotates and falls downward, a sufficient height can be secured with respect to the discharge roller 51 and the discharge spur 52 for discharging the sheet material S.

  In this embodiment, the back cover is rotated about the support shaft of the front cover. However, the back cover may be moved in parallel with the front cover, or the back cover is lowered by its own weight. However, it may be biased by a spring or the like.

  Further, although the damper member is provided on the apparatus main body side and the damper contact portion is provided on the paper discharge tray side, the damper member may be provided on the paper discharge tray side and the damper contact portion on the apparatus main body side.

1 is a perspective view of a recording apparatus according to an embodiment of the present invention (use state). 1 is a perspective view of a recording apparatus according to an embodiment of the present invention (non-use state). Detailed sectional view of the front door mounting portion when the embodiment of the present invention is not used Detailed sectional view of the front door mounting portion when the front door of the embodiment of the present invention is opened Detailed sectional view of the front door mounting portion when using the embodiment of the present invention It is a perspective view of the conventional recording apparatus, (a) a non-use state, (b) a state where the front door is opened, and (c) a use state.

Explanation of symbols

S sheet 1 Inkjet printer main body 2 Paper feed unit 3 Paper discharge unit 4 Base 4a Paper discharge tray support shaft 4b Paper discharge port 4c Paper discharge tray positioning surface 4d Damper member 5 Exterior cover 5a Paper feed tray support shaft 5b Paper feed port 21 Paper feed tray 22 Paper feed subtray 31 Paper discharge tray 32 Paper discharge subtray A
32a Back cover push-up part 33 Paper discharge sub-tray B
34 Output Sub Tray C
35 Front door 35a Back cover support shaft 35b Base abutting part 36 Back cover 36a Damper contact part 51 Paper discharge roller 52 Paper discharge spur

Claims (6)

  A sheet discharge tray for stacking sheet materials discharged from the apparatus, and is a multi-stage tray that is used by pulling out the sheet discharge sub-tray from the sheet discharge tray when in use, and the sheet material stacking surface of the sheet discharge tray is configured to be movable. The sheet discharge tray is moved in conjunction with movement of the sheet discharge sub-tray.   2. The sheet discharge tray according to claim 1, wherein the sheet material stacking surface rotates around a fulcrum provided downstream in the sheet material conveyance direction.   The sheet discharge tray according to claim 1, wherein the sheet material stacking surface operates by its own weight in conjunction with the sheet discharge sub-tray.   3. The sheet discharge tray according to claim 1, wherein the sheet material stacking surface is biased by a spring or the like and operates in conjunction with the sheet discharge sub-tray.   A discharge tray that is attached to the apparatus main body so as to be pivoted to open and close, and stacks discharged sheet materials.In use, a discharge tray in the apparatus that is used by pulling out the discharge sub-tray from the discharge tray. Positioning portions for contacting the paper discharge tray when in use are provided on the apparatus main body side and the paper discharge tray side, respectively, and elastic members as dampers for opening the paper discharge tray, such as rubber materials, springs, etc. Is disposed on the apparatus main body side, and a damper abutting portion that abuts on the elastic member is provided on the paper discharge tray side, and the damper abutting portion operates in conjunction with the paper discharge sub-tray. When the tray is opened, the elastic member and the damper abutting portion abut before the discharge tray positioning portion abuts, and when the sheet feeding sub-tray is pulled out during use, the damper contact Discharge tray of claim 1 in which part operates in a direction away from said resilient member, the positioning portion provided on the paper discharge tray and the apparatus main body, characterized in that abutment.   The paper discharge tray according to claim 1, wherein the damper contact portion is formed on a member constituting the sheet material stacking surface.

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