JPH07193672A - Paper carrier - Google Patents

Abstract

PURPOSE:To facilitate jamming processing by providing turnably an upper, a front, a lower cover to a carrying path in which paper is carried from a paper supply section in a down forward direction, the paper is U-turned at the front end of the carrier and the paper is fed to a rear upward paper reception section so as to simplify the opening mechanism. CONSTITUTION:A paper sheet (original) is carried from a paper feed section 3 of an equipment main body 2 in a down forward direction, U-turned by a guide face 6g of a front cover section 6 and carried to a paper reception section 4 along a paper carrier path R. When paper is jamming, upper/lower cover sections 5,6 provided turnably in upward/forward direction by pivot part 13, 24 respectively are open upward/downward to open upper and front side carrier paths Ru, Rf. Furthermore, input output side guides 7i, 7o of the lower carrier Rd are turned by pivots 25, 26 to open input output side halves and the cover 6 and the guide 7i are linked with a cam 6c. Thus, all parts of the carrier path R is open by opening the covers 5, 6 and the guide 7o to facilitate jamming processing and to prevent damage from giving to the paper sheets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device suitable for use in a document reading device for a facsimile.

[0002]

2. Description of the Related Art A document reading device of a facsimile is equipped with a document feeding device for feeding a document set in a document feeding unit to a document receiving unit by the document feeding unit and a document reading unit using an image sensor or the like. The original being fed was being read.

By the way, generally, as a form of a sheet conveying path in a sheet conveying device for conveying a sheet such as an original, by conveying the sheet in one direction from the sheet feeding section, the sheet is moved to the opposite side to the sheet feeding section. There are a discharge method and a method in which the sheet conveyed from the sheet supply section is made a U-turn inside the apparatus main body, and then returned to the same side as the sheet supply section and discharged. In particular, the latter method is a conventional method. , The sheet is conveyed diagonally downward from the sheet supply unit arranged on the upper surface of the apparatus main body, makes a U-turn inside the apparatus main body, and is then conveyed obliquely upward,
2. Description of the Related Art There is known a sheet conveying device which can reach a sheet receiving portion arranged on the upper surface of the apparatus main body (for example, Japanese Unexamined Patent Publication No. Hei 4-
(See Japanese Patent Publication No. 97874).

[0004]

However, in the latter conventional sheet conveying device described above, there is an advantage that the sheet can be returned to the same side as the sheet feeding portion and the depth of the apparatus main body can be made compact. Since the U-turn operation is included, there are the following problems.

First, since a mechanism and an operation for opening the paper transporting path when a paper jam occurs becomes complicated, a troublesome jam processing is required.

Secondly, since the jammed paper cannot be easily removed, the paper is apt to be damaged such as tearing or wrinkling the paper.

The present invention has solved the problems existing in the prior art as described above, and it is an object of the present invention to provide a paper transporting device which can easily perform jam processing and can eliminate the harmful effect of damaging paper. And

[0008]

According to the present invention, an original (paper) is conveyed from the original supply section (paper supply section) 3 arranged on the upper surface 2u of the apparatus main body 2 to the inside of the apparatus main body 2, and the apparatus main body 2 When configuring the sheet conveying device 1 that makes a U-turn inside and then conveys to the document receiving portion (paper receiving portion) 4 arranged on the upper surface portion 2u of the apparatus main body 2, particularly when the original is fed from the document feeding portion 3 to the lower front side. A document transport path (paper transport path) R that transports the sheet to the document receiving section 4 and makes a U-turn at the front end of the apparatus body 2 and then transports the sheet to the document receiving section 4 at the rear upper side.
Is placed on the upper surface portion 2u of the upper part of the upper conveyance path Ru
And an upper cover portion 5 that can be opened, and a front surface portion 2f of the apparatus main body 2.
And a front cover portion 6 which can be opened forward to open the front side conveyance path Rf and above the lower side conveyance path Rd in the inside of the apparatus main body 2, and is displaced upward to move the lower side conveyance path. R
A document guide portion (paper guide portion) 7 capable of opening d is provided.

In this case, the front end of the upper cover portion 5 can be rotatably attached to the apparatus main body 2, and the lower end of the front cover portion 6 can be rotatably attached to the apparatus main body 2. The front cover portion 6 has a curved guide surface 6g for making a U-turn of the document on the inner surface. On the other hand, the document guide section 7 includes an input side guide section 7i and an output side guide section 7 arranged in the front and rear in the transport direction.
The input side guide portion 7i can be attached to the apparatus main body 2 so as to be rotatable. Further, since the front cover portion 6 has the cams 6c, 6c that engage with the inlet side guide portion 7i and displace the inlet side guide portion 7i upward when the front cover portion 6 is opened, the inlet side guide portion 7i is a front cover portion. It moves up and down in conjunction with the opening and closing of 6. Furthermore, the exit side guide portion 7o can be rotatably attached to the apparatus main body 2 at the entrance side end.

[0010]

According to the sheet conveying apparatus 1 of the present invention, the original is conveyed from the original supply unit 3 arranged on the upper surface 2u of the apparatus main body 2 into the inside of the apparatus main body 2 at the front lower side, and at the front end of the apparatus main body 2. After making a U-turn, it is conveyed to the upper rear, and the device main body 2
To the document receiving portion 4 arranged on the upper surface portion 2u of the. That is, the document is transported along the U-shaped document transport path R. In this case, since the front cover portion 6 is provided at the front end of the apparatus main body 2 and the inner surface of the front cover portion 6 has a curved guide surface 6g, the document conveyed from the document supply portion 3 is guided by the guide surface 6g. You can make a U-turn.

On the other hand, in the case of carrying out jam processing when a document is jammed, first, the upper cover portion 5 arranged on the upper surface portion 2u of the apparatus main body 2 is opened upward so that the front end of the upper cover portion 5 is a fulcrum. The upper transport path Ru is opened. Further, by opening the front cover portion 6 arranged on the front surface portion 2f of the apparatus main body 2 forward, the front cover portion 6 is rotationally displaced about the lower end as a fulcrum, and the front transport path Rf is opened. Furthermore, since the inlet side guide portion 7i and the outlet side guide portion 7o are provided on the upper side of the lower side transport path Rd inside the apparatus body 2, the inlet side guide portion 7i is provided at the outlet side end. By rotating and displacing upward with respect to the fulcrum, the lower conveyance path R
The entrance half of d is opened, and the exit guide 7o
By rotating and displacing upward with the entrance end as a fulcrum, the exit half of the lower transport path Rd is opened. At this time, since the front cover portion 6 has the cam 6c, when the front cover portion 6 is opened, the cam 6c is displaced upward, and the entrance side guide portion 7i engaged with the cam 6c opens the front cover portion 6. Displaces upward in conjunction with.

As a result, the upper cover portion 5 and the front cover portion 6 are
When the operation for opening the output guide portion 7o is performed, the input guide portion 7i is interlocked with the front cover portion 6, so that the entire section of the document conveyance path R is opened. Further, since all the document conveyance paths R are opened upward, it is possible to perform all jam processing from above the apparatus main body 2. Therefore, the jam processing is facilitated and the harmful effect of damaging the sheet is eliminated.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings. The sheet transporting device 1 of the embodiment is applied to a document reading device included in a facsimile.

In FIG. 5, reference character F denotes the external appearance side of the facsimile. The facsimile F includes a cabinet 51,
At the front part of the cabinet 51, a document reading device M having the sheet conveying device 1 according to the present embodiment is arranged. Further, a document feeding section 3 which is inclined downward to the front is provided on the upper surface 2u of the apparatus main body 2 of the sheet conveying apparatus 1, and the document feeding section 3 is inclined to the front downward at a position spaced apart from the original feeding section 3. A document receiving section 4 is provided. Inside the cabinet 51, various functional units necessary for the facsimile F such as a printing device, which are not shown in the figure, are built.

Next, the structure of the sheet conveying apparatus 1 according to the present embodiment will be concretely described with reference to FIGS.

In FIG. 1, reference numeral 2 denotes an apparatus main body having a main body chassis 11. The upper surface 2u of the apparatus main body 2 is provided with the above-mentioned original supply section 3 and an original receiving section 4 arranged behind the original supply section 3. Prepare

On the other hand, reference numeral 12 denotes an upper chassis (swing chassis) which constitutes a part of the upper cover portion 5. The front end of the upper chassis 12 is rotatably attached to the upper portion of the front end of the main body chassis 11 by a support shaft portion 13. . The upper chassis 12 is provided with a first pinch roller 14, an image sensor (original reading unit) 15, a document separating roller 16, and a sending roller 17 from the front side in the document conveying direction, and the upper chassis 12 is integrally provided with a document guide surface 18. Form. On the other hand, body chassis 1
1, a first conveying roller 19 facing the first pinch roller 14, a pressing roller 20 facing the image sensor 15,
Document separating plates 21 facing the document separating roller 16 are provided respectively. Reference numeral 22 is a conveyance guide plate attached to the main body chassis 11, and its front side faces an inner surface of a front cover portion 6 described later.

A front chassis 23 constitutes a part of the front cover portion 6, and a lower end of the front chassis 23 is rotatably attached to a lower portion of the front end of the main body chassis 11 by a support shaft portion 24. The inner surface of the front chassis 23 forms a curved guide surface 6g for making a U-turn of the original document, and, as shown in FIG.
6c is integrally formed. In addition, in FIG. 4, A indicates a document.

Further, a document guide portion 7 is arranged inside the apparatus main body 2. The document guide section 7 includes an input side guide section 7i and an output side guide section 7o, which are arranged in the front and rear in the transport direction.
The entrance side guide portion 7i is rotatably attached to the main body chassis 11 by the support shaft portion 25, and the exit side guide portion 7o is rotatably attached to the main body chassis 11 by the support shaft portion 26. . The front side of the entrance-side guide portion 7i faces the inner surface of the front cover portion 6, and the cam 6c,
6c can be engaged. On the other hand, the delivery side of the delivery side guide portion 7o extends upward, and the leading end side faces the delivery roller 17, thereby forming a part of the document supply portion 3. Further, a second pinch roller 27 is arranged on the entrance side guide portion 7i, and a third pinch roller 28 is arranged on the exit side guide portion 7o. On the other hand, the main chassis 11 has a second pinch roller 2
7 and the second conveying roller 29, the third pinch roller 2
8, the third guide roller 30 and the guide guide plate 3 arranged below the inlet side guide portion 7i and the outlet side guide portion 7o.
1, respectively.

With the above-described structure, the document is conveyed to the apparatus main body 2 from the document supply unit 3 to the front lower side, and after the guide surface 6g of the front cover unit 6 makes a U-turn, the document is conveyed to the upper rear side to receive the document. An oblique U-shaped document conveying path reaching the section 4, that is, an upper conveying path Ru, a front conveying path Rf, and a lower conveying path R
A document conveyance path R formed of d is provided. In each figure, the document conveyance path R is shown by a one-dot chain line.

Next, the operation including the positional relationship and function of each part in the document feeder 1 according to the present embodiment will be described with reference to FIG.
~ It demonstrates with reference to FIG.

First, a plurality of stacked originals are set in the original supply unit 3. In addition, normally, the upper cover portion 5 (upper chassis 12) and the front cover portion 6 (front chassis 23) are not shown in FIG.
As shown in FIG. As a result, the document separating roller 16 serves as the document separating plate 21, the image sensor 15 serves as the pressing roller 20,
The first pinch rollers 14 are in contact with the first transport rollers 19, respectively, and the upper transport path Ru and the front transport path Rf are set. Further, the tips of the cams 6c, 6c in the front cover portion 6 are displaced downward, and the cams 6c, 6c and the entrance side guide portion 7i are displaced.
Since the engagement with is released, the entrance side guide portion 7i is also displaced downward, and the second pinch roller 27 moves to the second transport roller 29.
And the entrance half of the lower transport path Rd is set. Furthermore, the output side guide portion 7o is also displaced downward. As a result, the third pinch roller 28 comes into contact with the third transport roller 30, and the exit side half of the lower transport path Rd is set.

On the other hand, in the transmission mode, the delivery roller 17,
The document separating roller 16, the pressing roller 20, the first transporting roller 19, the second transporting roller 29, and the third transporting roller 30 are rotated, and the plurality of documents set in the document supply unit 3 are separated from the document separating roller 16 and the document. By the separating action of the plate 21, the uppermost originals are supplied one by one to the image sensor 15 side. The document is between the image sensor 15 and the pressing roller 20, the first transport roller 19 and the first pinch roller 14.
Between the guide surface 6g and the conveyance guide plate 22, between the guide surface 6g and the entrance side guide portion 7i, between the entrance side guide portion 7i and the conveyance guide plate 31, between the second conveyance roller 29 and the second pinch roller 27, and the exit side. Between the guide portion 7o and the transport guide plate 31, the third transport roller 30 and the third pinch roller 28.
After passing through the space, it is conveyed to the document receiving section 4. That is, the document is conveyed along the U-shaped document conveyance path R. And at this time,
The document is read by the image sensor 15.

By the way, during conveyance, the document is conveyed on the document conveyance path R.
Imagine that you are stuck in. In this case, jam processing is required. First, when the original is jammed in the upper conveyance path Ru, the rear end of the upper cover portion 5 may be opened upward as shown in FIG. As a result, the upper cover portion 5 is pivotally displaced counterclockwise with the support shaft portion 13 at the front end as a fulcrum, and the upper transport path Ru is opened. In addition, the rotation range of the upper cover portion 5 is
In FIG. 3, it is clearly indicated by an arrow Hu.

When the original is jammed from the upper side conveyance path Ru to the front side conveyance path Rf, in addition to opening the upper cover part 5, the upper end of the front cover part 6 is opened forward as shown in FIG. Good. As a result, the front cover portion 6 is rotationally displaced counterclockwise about the support shaft portion 24 at the lower end as a fulcrum, and the front transport path Rf is also opened. On the other hand, the cam 6c provided on the front cover portion 6 is also displaced upward and pushes up the entrance side of the engaging entrance side guide portion 7i as shown in FIG.
i is pivotally displaced in the clockwise direction with the support shaft portion 25 at the outlet end as a fulcrum, and the inlet half of the lower conveyance path Rd is opened in conjunction with the front cover portion 6. The rotation range of the front cover 6 is clearly indicated by an arrow Hf in FIG.
The rotation range of is clearly indicated by an arrow Hi in FIG.

Furthermore, in the case of jamming from the upper side transport path Ru to the lower side transport path Rd or from the front side transport path Rf to the lower side transport path Rd, in addition to opening the upper cover part 5 and the front cover part 6. The output side end of the output side guide portion 7o may be displaced upward. As a result, the output side guide portion 7o is pivotally displaced counterclockwise about the support shaft portion 26 at the input side end, and the output side half portion of the lower transport path Rd is opened. The rotation range of the output side guide portion 7o is clearly indicated by an arrow Ho in FIG.

Thus, depending on the jammed state of the original,
The three positions of the upper cover part 5, the front cover part 6 and the exit side guide part 7o can be arbitrarily operated to open them, and a required partial section or all sections (four sections) of the document conveying path R can be opened.
In particular, since the document guide portion 7 is divided into the front and the rear, the two pinch rollers 27 and 28 can be separated from the facing conveyance rollers 29 and 30 by a sufficient distance. Moreover, at this time, since all are opened upwards,
It is possible to easily perform general jam processing such as all jam processing can be performed from above the apparatus main body 2, and an adverse effect of tearing or wrinkling a document is eliminated.

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments. For example, although the embodiment exemplifies a document reading device of a facsimile, the present invention can be applied to a printing device or other similar mechanism as well. In addition, the detailed configuration, shape, and the like can be arbitrarily changed without departing from the scope of the present invention.

[0029]

As described above, the sheet conveying apparatus according to the present invention conveys a sheet from the sheet feeding section to the front lower side, and after making a U-turn at the front end of the apparatus body, conveys the sheet upward to the rear side to receive the sheet receiving section. And a paper transport path that leads to the top of the device body, and an upper cover that can be opened upward to open the upper transport path, and a front part of the device body, and open to the front. Since the front cover part that can open the front transport path and the paper guide part that is located above the lower transport path inside the apparatus body and can be displaced upward to open the lower transport path are provided. It has such a remarkable effect.

The mechanism and operation for opening the paper transport path when a paper jam has occurred are simplified, and jam processing can be performed easily.

Since the jammed paper can be easily removed, there is no risk of tearing or wrinkling the paper, and the harmful effect of damaging the paper can be eliminated.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a main part of a sheet conveying device according to the present invention,

FIG. 2 is a schematic side view showing a main part of the sheet conveying device during a jam process,

FIG. 3 is an operation explanatory view for explaining an operation of a main part of the paper transporting device,

FIG. 4 is a front view of a front cover portion of the paper transport device,

FIG. 5 is an external side view of a facsimile equipped with the same sheet conveying device;

[Explanation of symbols]

 1 Paper Conveying Device 2 Device Main Body 2u Top Surface 2f Front Surface 3 Document Feeder (Paper Feeder) 4 Document Receiver (Paper Receiver) 5 Top Cover 6 Front Cover 6c Cam 6g Guide 7 Document Guide (Paper) Guide part) 7i Inlet guide part 7o Outlet guide part R Document transport path (paper transport path) Ru Upper transport path Rf Front transport path Rd Lower transport path

Claims (9)

[Claims] 1. A sheet is conveyed from the sheet supply unit disposed on the upper surface of the apparatus main body to the inside of the apparatus main body, and U is conveyed inside the apparatus main body.
In the paper transport device that transports the paper to the paper receiving section arranged on the upper surface of the apparatus main body after it is turned, the paper is transported from the paper supply section to the front lower side, and after making a U-turn at the front end of the apparatus main body, the rear upper direction. A paper transport path for transporting the paper to the paper receiving section is provided, and it is placed on the upper surface of the main body of the device and on the upper cover part that can be opened upward to open the upper transport path and on the front part of the main body of the device. And a front cover part that can be opened forward to open the front transport path, and a paper guide that can be placed above the lower transport path inside the apparatus main body and displaced upward to open the lower transport path. A sheet conveying device, which is provided with a section. 2. The sheet conveying apparatus according to claim 1, wherein a front end of the upper cover portion is rotatably attached to the apparatus main body. 3. The sheet conveying apparatus according to claim 1, wherein a lower end of the front cover portion is rotatably attached to the apparatus main body. 4. The front cover part has a curved guide surface for making a U-turn of the document on the inner surface.
Alternatively, the paper transporting device according to item 3. 5. The sheet conveying device according to claim 1, wherein the sheet guide portion includes an inlet side guide portion and an outlet side guide portion which are arranged at the front and rear in the conveying direction. 6. The sheet according to claim 1, wherein the inlet side guide portion is rotatably attached to the apparatus body at the outlet side end, and is vertically displaced in association with opening and closing of the front cover portion. Transport device. 7. The sheet conveying apparatus according to claim 3, 4 or 6, wherein the front cover portion has a cam for displacing the entrance side guide portion upward when opened. 8. The sheet conveying apparatus according to claim 5, wherein the output side guide portion is rotatably attached to the apparatus main body at the input side end. 9. The sheet conveying device according to claim 1, which is applied to a document reading device of a facsimile.