JP3783772B2 - Paper transport guide - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a paper transport guide that is attached to a main body and guides paper transported by a paper feeder or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a device such as a recording apparatus, paper sent out from a paper feeding device is reversed and conveyed for reasons such as making the device compact. The reversing portion is provided with a paper conveyance guide for guiding the paper so that the paper is smoothly reversed and conveyed.
The paper transport guide is formed in a long shape in the paper width direction, and is attached to the main body at both ends in the paper width direction so that it can be freely opened and closed. In such a case, it is possible to open the jam processing.
[0003]
[Problems to be solved by the invention]
As described above, the paper transport guide is long in the paper width direction and thin in thickness, and is supported at both ends in the paper width direction.
When the paper transport guide is warped, the paper transport is not performed smoothly, causing a paper jam.
Therefore, the present invention provides a paper conveyance guide configured to position the paper conveyance guide with respect to the main body at the time of paper guidance and suppress the occurrence of warpage.
[0004]
[Means for Solving the Problems]
The present invention uses the following means in order to solve the above problems.
That is, according to the first aspect of the present invention, there is provided a paper conveyance guide attached to the main body so as to be freely opened and closed. In a state in which an insertable engagement hole is formed and the paper transport guide is closed, the warp correction rib is fitted into the engagement hole, and the outer surface of the warp correction rib and the inner peripheral surface of the engagement hole are engaged. In this state, the paper conveyance guide is arranged in a straight line with no distortion in the left and right direction, and the engagement hole is disposed at the position where the paper conveyance guide The conveyance guide is positioned .
With this configuration, when the paper transport guide is closed and guiding the paper to be transported, warpage of the paper transport guide is suppressed, and the position of the paper transport guide with respect to the main body is not changed. Paper is smoothly conveyed, and jamming can be prevented.
[0005]
According to a second aspect of the present invention, the paper conveyance guide is supported by the main body at both ends in the width direction, and the warp correction rib is disposed at a substantially central portion in the width direction of the paper conveyance guide.
As a result, when the paper conveyance guide supported at both ends is warped, the position with respect to the main body in the vicinity of the central portion where the amount of warpage is the largest can be fixed, and the warpage prevention effect can be enhanced and ensured. .
[0006]
Furthermore, in the invention of claim 3, since the warp correction rib is integrally formed with the paper conveyance guide, the number of parts does not increase and the assemblability does not deteriorate due to the formation of the warp correction rib .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a perspective view showing a facsimile apparatus including a recording apparatus provided with a paper conveyance guide according to the present invention, FIG. 2 is a front view showing the vicinity of a side cover portion of the recording apparatus, FIG. 3 is a side sectional view, and FIG. Is a front view showing the paper conveyance guide, FIG. 5 is a partially rear view, and FIG. 6 is a plan view showing a warped state by opening and closing the paper conveyance guide.
[0008]
As an example of the paper conveyance guide of the present invention, a paper conveyance guide provided in a recording apparatus of a facsimile apparatus will be described.
As shown in FIG. 1, the facsimile apparatus F is provided with a reading device 2 at the top and a recording device 1 at the bottom, and the recording device 1 includes a paper feed cassette 4 and a recording unit 3. The paper accumulated in the paper feed cassette 4 is fed to the recording unit 3 by the paper feeding device, and after recording is performed by the recording unit 3, the paper is ejected to the discharge tray 5.
[0009]
In this case, the paper in the paper feed cassette 4 is first conveyed to one end side of the recording apparatus 1 provided with the side cover 6, reversed at the one end portion, conveyed to the other end side, and recorded. It is discharged to the discharge tray 5.
The side cover 6 is opened when a jam occurs in the paper transported from the paper feed cassette 4 to the recording unit 3 and opens the paper transport path to facilitate the paper jam clearing operation.
[0010]
As shown in FIGS. 2 and 3, the side cover 6 can be opened and closed around a rotation fulcrum 6 a, and when the side cover 6 is opened, an opening 1 b in the main body 1 a of the recording apparatus 1 is opened.
A paper transport guide 11 is disposed inside the opening 1b. The paper transport guide 11 is attached to the main body 1b and can be opened and closed around a rotation fulcrum 11a.
[0011]
When the paper transport guide 11 is closed, the paper transported from the paper feed cassette 4 to the recording unit 3 is guided by the paper transport guide 11 when passing through the transport path P of the paper transport guide 11 portion. Thus, the transport direction is reversed.
On the other hand, when the paper transport guide 11 is opened, the paper transport path P is opened to the outside through the opening 1b, and it becomes easy to perform a processing operation for a jam or the like that occurs during the transport.
[0012]
The paper conveyance guide 11 is formed in an elongated shape that is long on the left and right, and the width dimension w is considerably larger than the height dimension h. Further, the thickness dimension t of the paper transport guide 11 is formed thin.
The rotation fulcrums 11a and 11a project from the left and right ends of the paper conveyance guide 11, and the paper conveyance guide 11 is rotatably supported by the main body 1a by the rotation fulcrums 11a and 11a.
[0013]
A plurality of ribs 11c, 11c,... Are formed on the outer surface of the paper transport guide 11 in the vertical direction.
Further, the upper portion of the inner side surface of the paper transport guide 11 is configured as a guide surface 11b formed in a curved shape in accordance with the paper transport path P, and a plurality of ribs 11d. 11d... Is formed so that the paper is smoothly conveyed.
[0014]
Among the plurality of ribs 11d, 11d,... Formed on the guide surface 11b on the inner side surface of the paper transport guide 11, some ribs 11d extend downward (downstream in the paper transport direction) and A warp correction rib 11 e is formed so as to protrude downward from the lower end of the transport guide 11.
On the other hand, an engagement hole 1 c is formed in the main body 1 a of the recording apparatus 1 in accordance with the position of the warp correction rib 11 e formed in the paper conveyance guide 11.
[0015]
The warp correction rib 11e is positioned above the engagement hole 1c when the paper transport guide 11 is open, and when the paper transport guide 11 is closed, the warp correction rib 11e is inserted into the engagement hole 1c. The outer surface of 11e engages with the inner peripheral surface of the engagement hole 1c.
When the warp correction rib 11e and the engagement hole 1c are engaged, the paper transport guide 11 is prevented from further outward movement when the paper transport guide 11 is closed.
The engagement hole 1c is arranged at a position where the paper conveyance guide 11 is in a straight line shape without distortion in the left-right direction with the warp correction rib 11e engaged with the engagement hole 1c. Yes.
[0016]
Here, as described above, the paper transport guide 11 has a long shape and a small thickness, is supported at both ends, and has a shape in which warpage is likely to occur. In particular, a warp that protrudes outward is likely to occur due to the reason that a force is applied from the inside by the paper that is transported along the transport path P.
[0017]
However, as shown in FIG. 6, in the recording apparatus 1 of this example, even when the paper conveyance guide 11 has a warp in the open state (the state indicated by the two-dot chain line), the paper conveyance guide 11 is closed. Since the warp correction rib 11e and the engagement hole 1c are engaged, the warp of the paper transport guide 11 is corrected to have a straight shape without distortion (state shown by a solid line).
[0018]
Thus, when the paper transport guide 11 is in a closed state that guides the paper transported through the transport path P, the paper transport guide 11 is positioned with respect to the main body 1a by the engagement hole 1c. Since the warp of the paper transport guide 11 is corrected to a straight line shape, paper jam is prevented from occurring as in the case where the paper is guided in a warped state, and smooth paper transport can be realized.
[0019]
Further, one of the plurality of warp correction ribs 11 e is formed at the substantially right and left central portions of the paper transport guide 11.
Thereby, the position with respect to the main body in the vicinity of the left and right central portions where the amount of warpage is the largest can be fixed, and the effect of preventing warpage can be enhanced and ensured.
Further, since the warp correction ribs 11e are formed at a plurality of positions in the left-right direction, the warp of the paper transport guide 11 can be corrected over the entire left and right regions, and uniform warp correction can be performed as a whole. It has become.
[0020]
Further, since the warp correction rib 11e is integrally formed with the paper transport guide 11, the warp correction rib 11e is formed, so that the number of parts does not increase and the paper transport guide 11 is assembled to the main body 1a. The assemblability of the product is not deteriorated.
[0021]
【The invention's effect】
The present invention has the following effects by being configured as described above.
That is, by integrally forming the warp correction rib as described above on the paper transport guide, it is possible to reliably correct the warp of the paper transport guide 11 without increasing the number of parts, thereby realizing smooth paper transport. Thus, the occurrence of paper jam can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a facsimile apparatus including a recording apparatus provided with a paper conveyance guide according to the present invention.
FIG. 2 is a front view showing the vicinity of a side cover portion of the recording apparatus.
FIG. 3 is a side sectional view of the same.
FIG. 4 is a front view showing a paper conveyance guide.
FIG. 5 is also a partial back view.
FIG. 6 is a plan view showing a warped state due to opening and closing of the paper conveyance guide.
[Explanation of symbols]
F Facsimile device 1 Recording device 1a Main body 1c Engagement hole 11 Paper transport device 11e Warpage correction rib

Claims (3)

A paper conveyance guide attached to the main body so as to be freely opened and closed, wherein the paper conveyance guide is formed with a protruding warp correction rib, and an engagement hole into which the warpage correction rib can be inserted is formed on the main body side,
When the paper transport guide is closed, the warp correction rib is fitted into the engagement hole, and the outer surface of the warp correction rib and the inner peripheral surface of the engagement hole are engaged and moved further outward. Is blocked,
In this state, the paper transport guide is disposed at a position where the paper transport guide is in a straight line shape without distortion in the left-right direction, and the paper transport guide is positioned with respect to the main body. . 2. The paper conveyance guide according to claim 1, wherein the paper conveyance guide is supported by the main body at both ends in the width direction, and the warp correction rib is disposed at a substantially central portion in the width direction of the paper conveyance guide. . The paper conveyance guide according to claim 1, wherein the warp correction rib is integrally formed with the paper conveyance guide.

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