JP2017226531A - Image formation apparatus and conveyance object stacker for image formation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent stacking failure due to intrusion of sheets to the space between a conveyance object position adjustment member and a guide cloth.SOLUTION: A conveyance object stacker for image formation apparatus having a conveyance object guide part 51 obtained by stretching a guide cloth 51a for guiding a sheet P discharged from the image formation apparatus A includes: a conveyance object position adjustment member C for adjusting the height position of the tip in the discharge direction α of a conveyance object; and a conveyance object guide member D1 which is arranged along the guide cloth 51a forming the conveyance object guide part 51 and formed to the entire length intersecting the conveyance object position adjustment member C.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a conveyed product stacker for an image forming apparatus and an image forming apparatus.

  Conventionally, there is a configuration disclosed in Patent Document 1 under the name “sheet stacking apparatus”. In short, the sheet stacking device disclosed in Patent Document 1 is obtained by connecting the other end portions of a plurality of paper discharge stack members having the same shape by a horizontal connection member made of a stainless steel wire.

  With the sheet stacking device disclosed in Patent Document 1, a long sheet (sheet roll) is maintained while maintaining operability by a guide portion that regulates the leading edge of the sheet and an inclined portion having a loose angle. Even when loaded, it can be stacked and loaded without sliding down.

  Incidentally, there is a paper discharge stacker having a configuration in which a guide cloth is stretched around a guide pipe instead of the paper discharge stack member. If the paper discharge stacker has a structure in which the guide cloth is stretched around the guide pipe, it has flexibility as compared with the paper discharge stack member, and is excellent in terms of compactness and weight reduction.

In the paper discharge stacker using the guide cloth, when stacking paper sheets having a short paper length (sub-scanning direction), a movable paper discharge position adjusting member that matches the paper is used.
However, when stacking using a movable paper discharge position adjustment member, if paper with a large amount of curl and strong stiffness is discharged, the leading edge of the paper pushes the guide cloth. Therefore, a deformation that the part is recessed occurs.
In this case, there is a problem that the sheet enters between the sheet discharge position adjusting member and the guide cloth, the leading end portion of the sheet cannot be guided to a predetermined position, and the sheet is not reversed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a transport stacker for an image forming apparatus that can prevent a stack failure caused by a sheet entering between a transport position adjusting member and a guide cloth.

  In order to solve the above-described problems, the present invention provides a transport stacker for an image forming apparatus having a transport guide section formed by stretching a guide cloth for guiding a transport discharged from the image forming apparatus. A conveyance object position adjusting member for adjusting the height position of the directional tip, and a conveyance element that is disposed along a guide cloth that forms the conveyance object guide part and that has a full length that intersects the conveyance object position adjustment member. An object guide member.

  According to the present invention, it is possible to prevent stack failure due to paper entering between the conveyed product position adjusting member and the guide cloth.

1 is a perspective view illustrating an appearance of a conveyance stacker for an image forming apparatus according to an embodiment of the present disclosure and an image forming apparatus according to an example. FIG. 2 is a side view illustrating a schematic configuration of the image forming apparatus transport stacker and the image forming apparatus according to the example. 4A and 4B are explanatory diagrams illustrating the behavior of a sheet discharged from the image forming apparatus, where FIG. 5A illustrates a state in which the leading end portion of the sheet is in contact with a leading end regulating portion of a conveyance stacker for the image forming apparatus, and FIG. (C) shows a state in which the rear end of the paper is cut. FIG. 10 is an explanatory diagram when stacking sheets on a conveyed product stacker for an image forming apparatus using a conveyed product position adjusting member according to an example. It is explanatory drawing for demonstrating the subject in the case of using a conveyed product position adjustment member. (A) is explanatory drawing which shows the usage condition of the conveyed product guide member which concerns on 1st embodiment of this invention, (b) is a side view of the conveyed product guide member, (c) is the conveyed product guide It is a front view of a member. It is a photograph which shows the actual usage condition of the conveyed product guide member which concerns on 1st embodiment of this invention. (A) is explanatory drawing which shows the usage condition of the conveyed product guide member which concerns on 2nd embodiment of this invention, (b) is the actual use of the conveyed product guide member which concerns on 2nd embodiment of this invention. It is a photograph which shows an aspect.

  Hereinafter, a conveyed product stacker according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view illustrating an appearance of a conveyance stacker for an image forming apparatus according to an embodiment of the present disclosure and an image forming apparatus according to an example. FIG. 2 is a side view illustrating a schematic configuration of a conveyance stacker for an image forming apparatus according to an embodiment of the present disclosure and an image forming apparatus according to an example. In FIG. 2, the image reading unit and the stand shown in FIG. 1 are omitted.

First, referring to FIGS. 1 and 2, a schematic configuration of a conveyance stacker for an image forming apparatus according to an embodiment of the present invention (hereinafter simply referred to as “sheet discharge stacker”) and an image forming apparatus according to an example. In addition, the operation of the main part will be described.
As shown in FIG. 2, the image forming apparatus A has an image reading unit 10, an image forming unit 20, and a spool bearing base 30 (see FIG. 1) arranged in order from the upper part to the lower part of the apparatus main body 5.
An image reading unit 10 shown in the present embodiment is placed on a stand 1 configured separately from the apparatus main body 5.
In the figure, in the front-rear direction X orthogonal to the up-down direction Z, the left side of the apparatus body 5 is the front side, and the right side is the rear side. Further, the direction perpendicular to the up-down direction Z and the front-rear direction X and penetrating through the paper surface in FIG. 2 is the main scanning direction Y (see FIG. 1), which corresponds to the sheet width direction (paper width direction).

The image reading unit 10 includes a document table 11, a contact image sensor 13, a document discharge roller 14, and a document discharge table 15.
The document table 11 is for setting a document to be conveyed to an image reading position (not shown) from the front side to the rear side of the apparatus body 5.
The document feeding roller 12 conveys the document to the image reading position, and the contact image sensor 13 is disposed at the image reading position and has a function of reading an image of the document. Further, the document discharge roller 14 discharges the document after the image reading is completed, and the document discharge table 15 is configured to stack the discharged document.

  Documents (not shown) placed on the document table 11 are fed one by one by a document feed roller 12 to a document transport path (not shown). Then, the image fed by the document feeding roller 12 is read by the contact image sensor 13, and after reading of the image, the document is discharged to the document discharge table 15 by the document discharge roller 14.

The image forming unit 20 forms an image by an ink jet recording method, and a serial type ink jet recording apparatus is used in this embodiment.
As shown in FIG. 1, a guide rod 21 and a guide rail 22 are spanned on a side plate (not shown) inside the apparatus main body 5 corresponding to the image forming unit 20, and the guide rod 21 and the guide rail 22 are connected to the guide rod 21 and the guide rail 22. A carriage 23 is slidably held in the main scanning direction Y.
The carriage 23 is mounted with a recording head that ejects ink droplets of each color of black (K), yellow (Y), magenta (M), and cyan (C). Each recording head is integrally provided with a sub-tank (none of which is shown) for supplying ink thereto.

A maintenance / recovery mechanism 24 that performs maintenance / recovery of each recording head in the carriage 23 is disposed in one end side area (the diagonally lower right side in the drawing) of the main scanning area. Further, a main cartridge 25 containing ink of each color to be supplied to a sub-tank (not shown) of each recording head is detachably attached to the apparatus main body 5.
The image forming unit 20 is provided with a cutter 26 for cutting a conveyed product (hereinafter referred to as “paper”) P on which an image is recorded by the image forming unit 20 into a predetermined length.

  In the present embodiment, the paper P cut to a required length will be described as an example of the conveyed product. However, the present invention is not limited to this, and the sheet P may be a sheet of recording medium, OHP, prepreg, copper foil, or the like. Needless to say, the present invention can be applied to all stackable items in the same manner as paper.

1 and 2, reference numeral 27 denotes a sheet discharge unit for discharging the paper P on which an image is recorded. The sheet discharge unit 27 includes a discharge port 40, a discharge guide plate 41, a discharge stacker 50, and the like disposed on the downstream side of the cutter 26 described above.
The discharge port 40 is used for discharging the paper P on which an image is recorded to the outside of the apparatus main body 5, and is opened in the sheet discharge direction Xa in the sheet discharge unit 27 and on the front side of the apparatus main body 5. Has been.

The discharge guide plate 41 is formed along the lower edge of the discharge port 40. The discharge guide plate 41 includes a guide surface 41a having a curved surface in which the amount of protrusion protruding downward from the front side gradually increases.
The sheet P on which the image is recorded is discharged to a discharge stacker 50 disposed below the discharge guide plate 41 while being guided on the guide surface 41a of the discharge guide plate 41, and is stacked and stacked. ing.
The spool bearing base 30 supports the paper P described above so that it can be fed out from a roll paper P1 formed by winding a long paper.

The paper discharge stacker 50 is obtained by appropriately stretching a guide cloth 51 a for guiding the discharged paper P around a plurality of guide pipes 52, and a conveyed product guide portion (hereinafter referred to as “paper discharge guide portion”) 51. The front end restricting portion 53 and the inclined portion 54 are provided.
The paper discharge guide portion 51 is formed by stretching a guide cloth 51a that guides the paper P discharged from the image forming apparatus A described above, and stands up so as to guide the front end portion Pa of the paper P to be discharged. Let it form.

The leading edge regulating portion 53 regulates the height position of the leading edge portion Pa of the discharged paper P. One end portion thereof is the lower end portion of the paper discharge guide portion 51 and the other end portion thereof is the inclined portion 54. Are formed so as to be substantially horizontal and connected to the lower end portions thereof.
The inclined portion 54 includes a first inclined portion 55 that is formed to face the paper discharge guide portion 51 with a predetermined interval through the tip restricting portion 53, and a second inclined portion 56 that follows the first inclined portion 55.
As shown in FIG. 2, the paper discharge stacker 50 configured as described above engages the locked portion 51 b provided at the upper end portion of the paper discharge guide portion 51 with the locking portion 41 b of the discharge guide plate 41. It is suspended by stopping.

  3A and 3B are explanatory views showing the behavior of the paper discharged from the image forming apparatus. FIG. 3A is a state in which the front end portion of the paper comes into contact with the front end regulating portion 53 of the paper discharge stacker 50, and FIG. (C) shows a state in which the rear end of the paper is cut. In addition, about the thing equivalent to what was demonstrated in above-mentioned FIG. 1, 2, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 3A, the leading end Pa of the paper P discharged from the discharge port 40 of the sheet discharge portion 27 is guided along the guide surface 41a of the discharge guide plate 41. Then, it descends toward the tip restricting portion 53, reaches the tip restricting portion 53 and hits it.

  After the front end portion Pa of the paper P hits the front end restricting portion 53, the paper P begins to bend toward the first inclined portion 55 with a momentum to be discharged, and the front end surface (printing surface) of the paper P is inclined. To come into contact.

When the sheet P is further discharged, the sheet P swells in the sheet discharge direction Xa in the vicinity of the connecting portion (bent portion) 54a between the first inclined portion 55 and the second inclined portion 56 (see FIG. 3B). )start.
Then, as shown in FIG. 3C, the rear end portion Pb of the paper P is cut and discharged in this state, so that the rear end portion Pb of the paper P is discharged by the stiffness of the paper P. Folds downstream in the direction Xa. Then, the other end portion Pb is placed on the first inclined portion 55 so as to hang down in the direction of the arrow in the figure, and is stacked and held on the paper discharge stacker 50.

FIG. 4 is an explanatory diagram when the paper P is stacked on the paper discharge stacker 50 using the conveyed product position adjusting member according to an example. In addition, about the thing equivalent to what was demonstrated in above-mentioned FIGS. 1-3, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.
A conveyed product position adjusting member (hereinafter referred to as “paper position adjusting member”) C is for adjusting the height position of the paper P received in the paper discharge stacker 50 in the discharge direction α.
The sheet position adjusting member C is a long and narrow rectangular plate having a required width. The sheet position adjusting member C has a leading end abutting against the suspension part 60 along the inclined part 54 and the leading end part Pa of the sheet P received by the sheet discharge stacker 50. The contact portion 61 is formed in a substantially L shape in a side view.
A locking claw 61a for locking the leading end portion Pa of the paper P is formed on the leading end portion of the leading end contact portion 61 so as to protrude upward.

  The paper position adjusting member C is used by being suspended by engaging the upper end portion of the suspending portion 60 with the connecting portion 54a. By using such a sheet position adjusting member C, the leading end portion Pa of the sheet P can be positioned upward, and even a sheet having a short length can be satisfactorily stacked.

FIG. 5 is an explanatory diagram for explaining a problem when the paper position adjusting member C is used.
When the paper P is stacked using the above-described paper position adjusting member C, when the curl amount of the paper P is large and the stiffness is strong, the guide cloth 51a in which the leading end portion Pa of the paper P forms the paper discharge guide portion 51 is used. It will be pushed and deformed into a concave shape.
In this case, the leading edge Pa of the paper P enters between the leading edge contact portion 61 of the paper position adjusting member C and the guide cloth 51a, and the paper P cannot be transported to a predetermined position, and the paper P is not reversed correctly. May occur.

  FIG. 6A is an explanatory view showing a usage mode of the conveyed product guide member according to the first embodiment of the present invention, FIG. 6B is a side view of the conveyed product guide member, and FIG. It is a front view of an object guide member.

The conveyed product guide member D1 according to the first embodiment of the present invention includes guide portions 70 and 70, semicircular hook portions 71 and 71 formed at the upper ends of the guide portions 70 and 70, and the guide portions 70, The connection part 72 which connects the lower end part of 70 is integrally formed with the metal bar.
The guide portions 70, 70 are spaced so as to sandwich the above-described paper position adjusting member C, are bent along the guide cloth 51 a, and are formed to be slightly wider from the lower end portion toward the upper end portion. Has been.

  The hook portions 71, 71 are for locking to a guide pipe 52 disposed at the upper end portion of the paper discharge guide portion 51. When the hook portions 71 and 71 are locked to the guide pipe 52 disposed on the upper end portion of the paper discharge guide portion 51, the guide portions 70 and 70 are along the guide cloth 51 a forming the paper discharge guide portion 51, and the lower end portion is It intersects with the conveyed product position adjusting member C and is formed to have a length protruding downward (see FIG. 6A).

FIG. 7 is a photograph showing an actual usage mode of the conveyed product guide member D1 according to the first embodiment of the present invention.
In the present embodiment, three conveyed object guide members D1 are arranged in the sheet width direction of the paper P at a predetermined interval in accordance with the width of the paper P.
With this configuration, the leading edge Pa of the paper P cannot push in the guide cloth 51a that forms the conveyed product guide 51, and the leading edge Pa of the paper P can be securely attached to the leading edge contact portion 61 of the paper position adjusting member C. It can be made to contact.

FIG. 8A is an explanatory view showing a usage mode of the conveyed product guide member according to the second embodiment of the present invention, and FIG. 8B is an actual view of the conveyed product guide member according to the second embodiment of the present invention. It is a photograph which shows the usage aspect of.
The conveyed product guide member D2 according to the second embodiment of the present invention is made of a synthetic resin in which a guide portion 80 and a square hook portion 81 are integrally formed on the upper end portion thereof.

When the hook portion 81 is locked to the guide pipe 52 disposed on the upper end portion of the paper discharge guide portion 51, the guide portion 80 follows the guide cloth 51a forming the paper discharge guide portion 51, and the lower end portion adjusts the position of the conveyed product. It abuts on the tip abutting portion 61 of the member C.
That is, when the lower end portion of the conveyed product guide member D2 is overlapped with the engaging claw 61a of the conveyed product position adjusting member C, the paper P cannot be pushed into the guide cloth 51a forming the conveyed product guide portion 51.

  In the above-described embodiment, the conveyance object guide member is suspended from the paper guide unit 51 as an example. However, the conveyance object guide member is configured to be detachable from the image forming apparatus main body. Also good.

DESCRIPTION OF SYMBOLS 5 Apparatus main body 11 Document stand 12 Document feed roller 13 Contact image sensor 14 Document discharge roller 15 Document discharge stand 20 Image forming part 21 Guide rod 23 Carriage 24 Maintenance recovery mechanism 25 Main cartridge 26 Cutter 27 Sheet discharge part 40 Discharge port 41 Discharge Guide plate 50 Paper discharge stacker 51a Guide cloth 51 Paper discharge guide part (conveyed material guide part)
52 Guide Pipe 53 Tip Restriction Part 54 Inclination Part 55 First Inclination Part 56 Second Inclination Part 60 Suspension Part 70 Guide Part 71 Hook Part 72 Connection Part 80 Guide Part 81 Hook Part A Image Forming Apparatus C Paper Position Adjustment Member (Transported object position adjustment member)
D1 Conveyed material guide member D2 Conveyed material guide member P Paper P1 Roll paper Pa Front end Pb Rear end α Discharge direction

JP 2013-32193 A

Claims (5)

In a conveyed product stacker for an image forming apparatus having a conveyed product guide portion formed by stretching a guide cloth that guides a conveyed product discharged from the image forming apparatus.
A transported object position adjusting member for adjusting the height of the leading end of the transported material in the discharge direction;
A conveyed product stacker for an image forming apparatus, comprising: a conveyed product guide member that is disposed along a guide cloth that forms the conveyed product guide portion and that is formed to have a full length intersecting with the conveyed product position adjusting member.   2. The conveyed product stacker for an image forming apparatus according to claim 1, wherein two or more conveyed product guide members are juxtaposed in accordance with the width of the discharged conveyed product. The guide cloth is stretched around the guide pipe,
3. The conveyed product stacker for an image forming apparatus according to claim 1, wherein the conveyed product guide member is locked to the guide pipe.   The conveyed article stacker for an image forming apparatus according to any one of claims 1 to 3, wherein the conveyed article guide member is detachable from the main body of the image forming apparatus. An image forming apparatus comprising the conveyed product stacker for an image forming apparatus according to claim 1.