JP2017077932A - Document conveying device and image forming device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document conveying device which suppresses accumulation of dust and foreign objects, and which can rotate a paper feeding tray cover easily, and to provide an image forming device including the same.SOLUTION: A document conveying device 30 includes: a paper feed tray 31; a document insertion port 34; a document discharge port 35 arranged below the document insertion port 34; a discharge tray 32 arranged below the paper feed tray 31; and a paper feeding tray cover 36. The paper feeding tray cover 36 is selectively arranged in a first position for covering the upper part of the document insertion port 34 and the paper feed tray 31, and in a second position arranged on the document conveying direction upstream side of the paper feed tray 31 and for extending a document placing surface of the paper feed tray 31, by rotating around a rotary shaft 36a. At the paper feeding tray cover 36, a projection 36c is formed for a user to operate when rotating the paper feeding tray cover 36.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a document conveying device including a paper feed tray, a discharge tray, and a paper feed tray cover, and an image forming apparatus including the same.

  Some image forming apparatuses such as copiers and facsimiles include a document transport device that automatically sends a plurality of documents to a document reading unit. The document transport device separates and transports one document at a time from the uppermost layer of the document stack stacked on the document placement tray (paper feed tray). The original is read by the original reading unit, and then is discharged to an original discharge tray (discharge tray) provided on the most downstream side of the original conveyance path.

  As such a document conveying device, a sheet feeding tray, a discharge tray disposed below the sheet feeding tray, a document insertion slot into which a document on the sheet feeding tray is inserted, and a document insertion slot are disposed below the document insertion slot. 2. Description of the Related Art A known document discharge port and a paper feed tray cover configured to be rotatable are known. The paper feed tray cover is rotated to be disposed at a first position that covers the upper side of the document insertion slot and the paper feed tray and on the upstream side of the paper feed tray in the document transport direction, and extends the document placement surface. The position is selected and arranged.

  Side surfaces for supporting the paper feed tray cover are provided on both sides of the paper feed tray in the document width direction (direction orthogonal to the document transport direction). A recess for allowing a user to put a finger on the edge of the paper feed tray cover is formed at the upper end of the side surface on the front side of the apparatus. As a result, the user inserts his / her finger into the concave portion with the paper feed tray cover disposed at the first position, and turns the paper feed tray cover by placing the finger on the edge of the paper feed tray cover and rotating the paper feed tray cover. A paper tray cover can be placed in the second position.

  A document conveying apparatus in which a concave portion for allowing a user to put a finger on the edge of a paper feed tray cover is formed on a side surface provided on the side of the paper feed tray cover is disclosed in, for example, Patent Document 1. Yes.

JP2013-118527A

  However, the conventional document conveying apparatus has a problem in that dust and foreign matter accumulate in the concave portion because the side portion is provided with a concave portion in order to make it easy to put a finger on the edge of the paper feed tray cover. In addition, in order to put a finger on the edge of the paper feed tray cover, it is necessary to put a finger on the edge of the paper feed tray cover after inserting the finger into the concave portion on the side surface. There is also a problem that the dynamic operability is poor. There is also a problem that the recess is relatively difficult to find.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to suppress the accumulation of dust and foreign matters and to easily rotate the paper feed tray cover. An object of the present invention is to provide a document conveying device and an image forming apparatus including the same.

  In order to achieve the above object, a document transport apparatus according to a first aspect of the present invention includes a paper feed tray on which a document is placed, a document insertion slot into which a document on the paper feed tray is inserted, and a document insertion A document discharge port for discharging a document whose image has been read disposed under the opening, a discharge tray disposed under the paper feed tray for placing the document discharged from the document discharge port, and document conveyance A paper feed tray cover having a rotation shaft extending in the document width direction orthogonal to the direction and a tray body configured to be rotatable about the rotation shaft. The paper feed tray cover is disposed at a first position that covers the upper side of the document insertion slot and the paper feed tray by rotating about the rotation shaft, and upstream of the paper feed tray in the document transport direction. And a second position that extends the original placement surface, and the paper feed tray cover is formed with a projection for the user to operate when the paper feed tray cover is rotated.

  According to the document conveying device of the present invention, the paper feed tray cover is formed with a protrusion for the user to operate when the paper feed tray cover is rotated. Thereby, unlike the case where the concave portion is provided as in the conventional document conveying device, it is possible to suppress accumulation of dust and foreign matter.

  In addition, since it is possible to place a finger on the protrusion without inserting a finger into the recess, it is possible to improve the rotation operability of the paper feed tray cover. Further, the protrusion can be easily found compared to the recess. Thus, the paper feed tray cover can be easily rotated.

1 is a cross-sectional view illustrating a structure of an image forming apparatus including a document conveying device according to a first embodiment of the present invention. FIG. 3 is a perspective view illustrating a structure of the document conveying device according to the first embodiment of the present invention, and is a diagram illustrating a state in which a paper feed tray cover is disposed at a first position. FIG. 3 is a perspective view illustrating a structure of the document conveying device according to the first embodiment of the present invention, and is a diagram illustrating a state in which a paper feed tray cover is disposed at a second position. It is the perspective view which showed the structure of the original conveying apparatus of 2nd Embodiment of this invention. It is the perspective view which showed the structure of the original conveying apparatus of 3rd Embodiment of this invention. It is the perspective view which showed the structure of the original conveying apparatus of 4th Embodiment of this invention. It is sectional drawing which showed the structure around the projection part of the original conveying apparatus of 4th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
With reference to FIGS. 1 to 3, the structure of the image forming apparatus 100 including the document conveying device 30 according to the first embodiment of the present invention will be described. In FIG. 1, in an image forming apparatus 100 (here, a digital multi-function peripheral is shown as an example), when performing a copying operation, an image reading apparatus 6 converts image data of an original into an image signal. On the other hand, in the image forming unit 3 in the MFP main body 2, the photosensitive drum 5 rotating in the clockwise direction in the drawing is uniformly charged by the charging unit 4, and is based on the original image data read by the image reading device 6. An electrostatic latent image is formed on the photosensitive drum 5 by a laser beam from an exposure unit (laser scanning unit or the like) 7, and a developer (hereinafter referred to as toner) is attached to the electrostatic latent image by the developing unit 8. An image is formed. The toner is supplied to the developing unit 8 from the toner container 9.

  A sheet is conveyed from the sheet feeding mechanism 10 to the image forming unit 3 via the sheet conveying path 11 and the registration roller pair 12 toward the photosensitive drum 5 on which the toner image is formed as described above. 3, the toner image on the surface of the photosensitive drum 5 is transferred onto the sheet by the transfer roller 13 (image transfer unit). The sheet onto which the toner image has been transferred is separated from the photosensitive drum 5 and conveyed to a fixing unit 14 having a fixing roller pair 14a to fix the toner image. The paper that has passed through the fixing unit 14 is sent to a paper conveyance path 15 that branches in a plurality of directions, and is fed by a path switching mechanism 21, 22 having a plurality of path switching guides provided at branch points of the paper conveyance path 15. The conveyance direction is sorted, and the first discharge tray 17a and the second discharge tray 17b are formed via the discharge roller pair 20a or the discharge roller pair 20b as it is (or after being sent to the paper conveyance path 16 and copied on both sides). It is discharged to the paper discharge unit.

  Although not shown, a static elimination device that removes residual charges on the surface of the photosensitive drum 5 is provided on the downstream side of the cleaning device 18. Further, the paper feed mechanism 10 is detachably attached to the multifunction machine main body 2 and includes a plurality of paper feed cassettes 10a and 10b for storing paper, and a stack bypass (manual feed tray) 10c provided above the paper feed cassettes 10a and 10b. These are connected to the image forming unit 3 including the photosensitive drum 5 and the developing unit 8 by the paper transport path 11.

  An image reading device 6 is arranged on the upper part of the multifunction device main body 2, and a document placed on a contact glass (not shown) of the image reading device 6 is pressed and held on the upper surface of the multifunction device main body 2. A platen (document presser) 24 is provided so as to be openable and closable. A document transport device 30 for automatically transporting a document to a document reading unit (not shown) of the image reading device 6 is attached to the platen 24.

  Specifically, the sheet conveyance path 15 is first branched into left and right forks on the downstream side of the fixing roller pair 14a, and one path (the path branched in the right direction in FIG. 1) communicates with the first discharge tray 17a. It is configured as follows. The other path (the path that branches in the left direction in FIG. 1) branches into two branches via the conveying roller pair 19, and the other path (the path that branches in the left direction in FIG. 1) is the second discharge tray 17b. It is comprised so that it may communicate with. On the other hand, the other path (the path that branches downward in FIG. 1) is configured to communicate with the sheet conveyance path 16.

  As shown in FIGS. 2 and 3, the document transport device 30 includes a paper feed tray 31 on which a document is placed, and a discharge tray that is disposed below the paper feed tray 31 and on which the discharged document is placed. 32. A document conveyance path (not shown) from the paper feed tray 31 to the discharge tray 32 is formed in the document conveyance unit 33 of the document conveyance device 30. At the upstream end of the document transport path (not shown) in the document transport direction, a document insertion port 34 into which a document on the paper feed tray 31 is inserted and a document insertion port 34 are arranged below the document insertion port 34. A document discharge port 35 through which a document whose image has been read by a reading unit (not shown) is discharged is formed. Further, in the document transport section 33, a document transport member including a pickup roller, a paper feed roller, a separation plate, a transport roller pair, and a discharge roller pair (not shown) is provided along a document transport path (not shown). Yes.

  The document transport device 30 includes a paper feed tray cover 36 and a side surface portion 37 disposed on one side (front side of the device) of the paper feed tray 31 in the document width direction (direction orthogonal to the document transport direction). The other side surface portion 38 disposed on the other side (the rear side of the apparatus) of the paper feed tray 31 in the document width direction is provided.

  The paper feed tray cover 36 is configured to be rotatable about a rotation shaft 36a extending in the document width direction. Specifically, the paper feed tray cover 36 includes a rotation shaft 36a and a tray body 36b attached to the rotation shaft 36a. Both end portions of the rotation shaft 36a are rotatably supported by the one side surface portion 37 and the other side surface portion 38.

  The tray main body 36b is rotated about the rotation shaft 36a, so that the first position (the position shown in FIG. 2) covering the upper portion of the document insertion slot 34 and the sheet feed tray 31 and the document conveyance direction of the sheet feed tray 31 are provided. It is arranged on the upstream side (right side in FIG. 3) and is selectively arranged at a second position (position in FIG. 3) extending the document placement surface (upper surface) of the paper feed tray 31. When the document conveying device 30 is not used, the tray main body 36b is disposed at the first position and closed, and when the document conveying device 30 is used, the tray main body 36b is disposed at the second position and opened.

  The paper feed tray cover 36 is formed with a protrusion 36 c that is operated by a user (picks or pinches) when the paper feed tray cover 36 is rotated. The protrusion 36 c is provided on the front side of the sheet feed tray cover 36.

  Further, in the present embodiment, the protrusion 36c is provided at the end of the tray body 36b (the part farthest from the rotation shaft 36a). The protrusion 36c protrudes from the side surface of the tray main body 36b to the outside in the document width direction (on the front side of the apparatus), and protrudes outward from the side surface portion 37 in the document width direction (to the front side of the apparatus).

  In the present embodiment, as described above, the paper feed tray cover 36 is formed with a protrusion 36 c that is operated by the user when the paper feed tray cover 36 is rotated. Thereby, unlike the case where the concave portion is provided as in the conventional document conveying device, it is possible to suppress accumulation of dust and foreign matter.

  Further, since the finger can be put on the protrusion 36c without inserting the finger into the recess, the operability of the rotation of the paper feed tray cover 36 can be improved. Further, the protrusion 36c can be easily found compared to the recess. As a result, the paper feed tray cover 36 can be easily rotated.

  Further, as described above, the protrusion 36 c is provided on the front side of the sheet feed tray cover 36. Thereby, the rotation operability of the paper feed tray cover 36 can be further improved.

  Further, as described above, the protrusion 36c is provided at a portion of the tray body 36b farthest from the rotation shaft 36a. Thereby, the paper feed tray cover 36 can be rotated with the smallest force.

(Second Embodiment)
In the second embodiment, as shown in FIG. 4, the protrusion 36c is provided in the vicinity of the rotation shaft 36a of the tray body 36b. The protrusion 36c protrudes from the side surface of the tray body 36b in a direction orthogonal to the rotation shaft 36a.

  Other structures of the second embodiment are the same as those of the first embodiment.

  In the present embodiment, as described above, the protrusion 36c is provided in the vicinity of the rotation shaft 36a of the tray body 36b. As a result, the paper feed tray cover 36 can be rotated with a short operation length (that is, only by slightly moving the fingertip).

  Other effects of the second embodiment are the same as those of the first embodiment.

(Third embodiment)
In the third embodiment, as shown in FIG. 5, the protrusion 36 c is a holding part that is formed in a columnar shape and is held by a user. The protrusion 36c is fixed to one end (end on the front side of the apparatus) of the rotation shaft 36a and rotates integrally with the rotation shaft 36a. The rotating shaft 36a protrudes outward in the document width direction (on the front side of the apparatus) from the one side surface portion 37. The tray main body 36b is fixed to the rotation shaft 36a and rotates integrally with the rotation shaft 36a. Thereby, when the user pinches and turns the protrusion 36c with a finger, the tray body 36b rotates.

  Other structures of the third embodiment are the same as those of the first embodiment.

  In the present embodiment, as described above, the protruding portion 36c is a gripping portion that is fixed to one end of the rotating shaft 36a and rotates integrally with the rotating shaft 36a. As a result, the paper feed tray cover 36 can be rotated simply by pinching the projecting portion 36c with a finger and turning it, so that the rotating operability can be further improved.

  Other effects of the third embodiment are the same as those of the first embodiment.

(Fourth embodiment)
In the fourth embodiment, as shown in FIGS. 6 and 7, the protrusions 36c are provided in substantially the entire region of the side of the tray main body 36b on the front side of the apparatus in the document transport direction (left and right direction in FIG. 6). The protrusion 36 c protrudes outward in the document width direction (on the front side of the apparatus) from the upper part of the one side surface part 37, and is disposed on the inner side of the document width direction (inner side of the apparatus) than the lower end of the one side surface part 37. ing.

  A lower surface 36d of the protruding portion 36c is inclined upward toward the outer side in the document width direction. On the other hand, an outer surface (a side surface on the front side of the apparatus) 37a of the one side surface portion 37 is inclined downward toward the outer side in the document width direction.

  In the present embodiment, as described above, the projecting portion 36 c protrudes outward in the document width direction (on the front side of the apparatus) from the upper portion of the one side surface portion 37, and inward in the document width direction from the lower end of the one side surface portion 37. Since it is arranged (on the back side of the apparatus), it is possible to suppress an increase in the arrangement space of the document conveying apparatus 30 while maintaining a state (structure) in which a finger can be easily applied to the protrusion 36c.

  Further, as described above, the outer surface 37a of the one side surface portion 37 is inclined downward toward the outer side in the document width direction, and the lower surface 36d of the protrusion 36c is inclined upward toward the outer side in the document width direction. doing. Thereby, since the space between the lower surface 36d (inclined surface) of the protrusion part 36c and the outer surface 37a (inclined surface) of the one side surface part 37 can be increased, it is possible to make it easy to put a finger on the protrusion part 36c. .

  Other effects of the fourth embodiment are the same as those of the first embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the present invention is applied to a document conveying device used in a multifunction peripheral has been described, but the present invention is not limited to this. Needless to say, the present invention can be applied to all document conveying apparatuses used in image forming apparatuses such as copying machines and facsimiles.

  Further, a configuration obtained by appropriately combining the configurations of the above-described embodiments is also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 30 Document conveying apparatus 31 Paper feed tray 32 Discharge tray 34 Document insertion port 35 Document discharge port 36 Paper feed tray cover 36a Rotating shaft 36b Tray main body 36c Projection part 36d Lower surface 37 One side part 37a Outer surface 38 Other side part 100 Image forming apparatus

Claims (8)

A paper feed tray on which documents are placed;
A document insertion slot into which a document on the paper feed tray is inserted;
A document discharge port that is disposed below the document insertion port and discharges a document from which an image has been read;
A discharge tray disposed below the paper feed tray and on which a document discharged from the document discharge port is placed;
A paper feed tray cover having a rotation shaft extending in the document width direction orthogonal to the document conveyance direction, and a tray body configured to be rotatable about the rotation shaft;
With
The paper feed tray cover is arranged at a first position that covers the upper side of the document insertion slot and the paper feed tray by rotating about the rotation axis, and upstream of the paper feed tray in the document transport direction. And a second position that extends the document placement surface of the paper feed tray,
The document feeding apparatus, wherein the sheet feeding tray cover is formed with a protrusion for a user to operate when the sheet feeding tray cover is rotated.   The document conveying apparatus according to claim 1, wherein the protrusion is provided at a portion of the sheet feed tray cover on the front side of the apparatus.   The document conveying apparatus according to claim 1, wherein the protrusion is provided at a portion of the tray body that is farthest from the rotation shaft.   3. The document conveyance according to claim 1, wherein the protrusion is provided at a portion of the tray body near the rotation shaft so as to protrude in a direction perpendicular to the rotation shaft. apparatus. The tray body rotates integrally with the rotation shaft,
The document conveying apparatus according to claim 1, wherein the protrusion is a gripping portion fixed to one end of the rotation shaft. And further comprising one side surface portion and the other side surface portion respectively disposed on both sides of the discharge tray in the document width direction.
The outer surface of the one side surface portion is inclined downward toward the outer side in the document width direction,
2. The projecting portion according to claim 1, wherein the protrusion protrudes outward in the document width direction from the upper portion of the one side surface portion, and is disposed inward in the document width direction from the lower end of the one side surface portion. 2. The document conveying device according to 2.   The document conveying apparatus according to claim 6, wherein a lower surface of the protruding portion is inclined upward toward the outer side in the document width direction.   An image forming apparatus comprising the document conveying device according to claim 1.

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