JP3294917B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine.

[0002]

2. Description of the Related Art In recent image forming apparatuses, for example, copiers, extremely small desk-top types are provided. In this type of copying machine, as shown in FIG. 4, a bottom plate portion 3 is provided on the bottom 1a of the copying machine main body 1 so as to be rotatable relative to the copying machine main body 1 around a rotation shaft 2. There are things. In this copying machine, as shown in FIG. 5, the inside 4 of the copying machine main body 1 is opened by opening the bottom plate 3. In a state in which the bottom plate 3 is closed, parts such as rollers and guide plates attached to the bottom plate 3 partition the lower surface 12 a of the paper transport path 12.

When performing the so-called jam processing, one end 1b of the copying machine main body 1 is lifted to be inclined at a predetermined angle, and the bottom plate portion 3 is opened to open the paper transport path 12 so that the inside 4 is opened. To remove paper jammed in the printer. By the way, a leg 5 is provided on the bottom surface 1a of the copying machine body 1. The legs 5 serve to prevent slippage when the copying machine is mounted on the mounting surface 6. The legs 5 are very low in order to reduce the overall height of the copying machine.

[0004]

Therefore, if the copier is slightly inclined, the corner 1c of the main body 1 of the copier comes into contact with the mounting surface 6, and the leg 5 comes off the mounting surface 6, and the copier slides. There is a tendency. For this reason, there is a problem that it is difficult to set the copying machine main body 1 in a predetermined inclined state for performing the jam processing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image forming apparatus in which the main body of a copying machine is inclined to a predetermined inclination state without slipping on a mounting surface, so that jam processing can be easily performed.

[0006]

In the image forming apparatus according to the present invention, a bottom plate is supported on the bottom of the main body of the image forming apparatus so as to be relatively rotatable around a predetermined rotation axis. Sometimes, the image forming apparatus lifts one end side of the image forming apparatus main body, rotates the image forming apparatus main body to a predetermined inclined state with respect to the mounting surface, and rotates the bottom plate portion relatively to open the inside of the apparatus. the aforementioned image forming apparatus main body, apart from that mounting legs provided on the bottom surface, position of the pivot point on the mounting surface when tilting the image forming apparatus main body in a predetermined inclined state, That is, the image forming apparatus main body
The lower end is open to the bottom edge on the other end side of the
Short side cut diagonally upward from the bottom
Cylindrical member is integrally formed, and a circular
A circle consisting of a friction member slightly projecting from the lower end of the cylindrical member
A column-shaped leg is provided.

[0007]

[0008]

[0009]

According to the image forming apparatus of the present invention , when one end of the image forming apparatus main body is lifted during the jam processing, the image forming apparatus main body rotates around the leg,
It is inclined with respect to the mounting surface. Since the legs are provided at positions on the mounting surface serving as pivot points of the image forming apparatus main body, the legs are always in contact with the mounting surface regardless of the inclined state of the image forming apparatus main body. Further, since the legs are made of a friction member, they have a high anti-slip effect. Therefore, the image forming apparatus main body is easily inclined without slipping on the mounting surface from the normal mounting state to a predetermined inclined state for performing jam processing.

Further, the temporary, if provided in the leg is released from the bottom edge of the other end position, the other end portion of the image forming apparatus main body from the leg to be the fulcrum is overhanging Will be. Therefore, if the image forming apparatus main body is inclined, the overhanged other end portion comes into contact with the mounting surface. In order to avoid this, the height of the legs must be increased. On the other hand, according to the present image forming apparatus, since the legs are provided on the bottom edge of the forming apparatus main body,
The legs can be made extremely low without causing the overhang.

Furthermore, the cylindrical member, since the outer peripheral portion of the leg is held, deformation of the leg made of the elastic rubber is regulated. In addition, since a part of the lower end of the cylindrical member is omitted, it is possible to avoid interference between the cylindrical member and the mounting surface when the image forming apparatus main body rotates.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is a sectional view showing a schematic configuration of a copying machine as an image forming apparatus according to one embodiment of the present invention. Referring to FIG. 2, this copying machine is a portable type small copying machine. In this copying machine, the bottom 1 of the copying machine body 1 is used.
a, a bottom plate 17 is provided rotatably via the rotation shaft 2. When performing the so-called jam processing, as shown in FIG. 3, the one end 1b side of the copying machine main body 1 is lifted to be inclined at a predetermined angle, and the bottom plate portion 1 is tilted.
7 is opened to open the inside of the copying machine, and the paper jammed inside is taken out.

The feature of this embodiment is that when the copying machine main body 1 is tilted to the above-mentioned predetermined inclined state, the elasticity of the copying machine main body 1 is set at a position serving as a rotation fulcrum on the mounting surface. The point that a rubber leg 80 is provided; the point that the leg 80 is provided on the bottom edge 1 e on the other end 1 d side of the copying machine main body 1 (see FIG. 1); The outer peripheral portion is held by a cylindrical member 81 as a reinforcing member formed integrally with the main body 1 of the copying machine. The cylindrical member 81 interferes with the mounting surface when the main body 1 of the copying machine rotates. So that its lower end 81a
Is partially missing.

Referring to FIG. 2, the schematic configuration of the copying machine main body 1 will be described. The casing of the copying machine main body 1 is divided into an upper casing 20 and a lower casing 10, and the wiring processing is performed. And for convenience of assembly and disassembly work,
On the lower casing 10 side, as many functional components and electrical components as possible are collectively stored. That is, although not shown, a metal side plate serving as a frame for mounting electric components and functional components is provided on the lower casing 10 side. Then, while being positioned on the side plate, the original is illuminated and scanned by the scanning table 15b to guide the reflected light to the photosensitive drum 13a carrying the toner image.
6a and resist rollers 17a, a paper feeding device 16 for feeding paper, a charging charger 13b for charging the photosensitive drum 13a, and a photosensitive drum 13
developing device 1 that supplies toner to a and visualizes the electrostatic latent image
3c, an image forming unit 13 including a transfer charger 13d for transferring the toner image to a sheet and a cleaning device 13e for removing residual toner on the photosensitive drum 13a; a heat roller 14a and a pressure roller 17b; A fixing unit 14 for fixing the formed toner images and a drive system (not shown) for driving these are attached.

On the other hand, the scanning table 15b is attached to the upper casing 20. The optical system 15 is configured by the scanning table 15b and the illumination device 15a attached to the lower casing 10. Referring also to FIG. 3, a guide plate 17c for guiding a sheet along the upper surface is formed on the bottom plate portion 17. In addition, this bottom plate 1
The rotatable roller 7 is provided with the registration roller 17a that contacts the registration roller 16a and the pressure roller 17b that contacts the heat roller 14a. Then, in a state where the bottom plate portion 17 is closed with respect to the lower casing 10, the guide plate 17c and the resist roller 1 are closed.
7a, the heat roller 14a, and the like define a lower surface 12a of the paper transport path 12 for transporting the paper.

FIG. 1 is a perspective view of the other end 1d side of the copying machine main body 1 as viewed from below, and shows a state in which the bottom plate 17 is opened and the paper transport path 12 is opened. FIG.
, Bottom edge 1e on the other end 1d side of copying machine body 1
In addition, a tubular member 81 having the lower end 81a opened is integrally formed. Referring to FIG. 3 in detail, the tubular member 81 is formed by a corner 1c of the copying machine main body 1,
That is, it is formed at a position to be a fulcrum of rotation on the mounting surface of the copying machine main body 1 when performing jam processing. Further, the lower end 81a is cut obliquely upward from below at the other end 1d side of the copying machine main body 1 so that even if the copying machine main body 1 is inclined at a predetermined angle for performing jam processing. The cylindrical member 81 and the mounting surface do not interfere with each other. The cylindrical member 81 is formed at two places on the bottom edge 1e on the other end 1d side.

A cylindrical leg 80 made of elastic rubber is accommodated inside the cylindrical member 81. This leg 80
Is adhered to the inner peripheral portion of the tubular member 81 using an adhesive or the like, and the outer peripheral portion is held by the tubular member 81. Also, as shown in FIG.
Is slightly longer than the length of the tubular member 81 so that the tubular member 81 does not come into contact with the placing surface when the copying machine main body 1 is placed on the placing surface. It has become.
Reference numeral 80a denotes a mounting leg of the copying machine main body 1, and supports the copying machine main body 1 on the mounting surface together with the leg 80 in a normal use state.

According to this embodiment, when performing the jam clearance, if the one end 1b side of the copying machine main body 1 is lifted, the copying machine main body 1 rotates about the leg 80 and is inclined with respect to the mounting surface. . Since the leg 80 is provided at a position serving as a pivot point on the mounting surface of the copying machine main body 1, the leg 80 is always maintained until the leg 80 is tilted to a predetermined tilt state necessary for performing jam processing. Contact the mounting surface. Moreover, since the legs 80 are made of elastic rubber, the coefficient of friction with respect to the mounting surface is large, and the anti-slip effect is high. Therefore, the copying machine main body 1 is tilted to the predetermined tilt state without slipping on the mounting surface. Thus, the bottom plate portion 17 can be smoothly opened with the inclination of the copying machine main body 1, and the jam can be easily removed.

Further, since the leg 80 is provided on the bottom edge 1e on the other end 1d side of the copying machine main body 1, even if the one end 1b side of the copying machine main body 1 is lifted and inclined, the other end 1d
The side does not come into contact with the mounting surface, and the legs 80 can be extremely low. This is because if the leg 80 is provided at a position distant from the bottom edge 1e, the copying machine body 1 is overhanged from the leg 80 serving as the fulcrum. Therefore, the other end 1d side of the inclined copier body 1 comes into contact with the mounting surface. To avoid this, the legs 80 must be raised. In contrast, in the present embodiment, since the legs 80 are provided on the bottom edge 1e, the overhang does not occur, and the legs 8
This is because it is not necessary to increase the height of 0.

As a result, the overall height of the copying machine body 1 can be kept low, which contributes to the reduction in size and weight of the copying machine body 1. Further, since the outer peripheral portion of the leg 80 is held by the tubular member 81, even if the copier main body 1 is inclined and a lateral force is applied to the leg 80, the leg 80 is
Its deformation is regulated. This makes it possible to suppress the wobble of the copier at the time of tilting and to perform a smooth jam processing.

In addition, the lower end portion 81a of the cylindrical member 81
Is partially omitted, so that the cylindrical member 81 can be prevented from interfering with the mounting surface at the time of the above inclination. Therefore, even if the elastic rubber leg 80 slightly protrudes from the cylindrical member 81, the leg 80 always reliably contacts the mounting surface. As a result, the overall height of the copying machine main body 1 can be further reduced, and it is possible to contribute to reducing the size and weight of the copying machine main body 1.

The present invention is not limited to the above embodiment, and the height of the leg 80 is
It may be slightly lower than a. Further, the cylindrical member may be configured as a separate body and attached to the lower casing 10. In addition, various design changes can be made without changing the gist of the present invention.

[0023]

According to the present invention, since the legs having a high anti-slip effect are provided at the positions of the image forming apparatus main body which are to be pivotal supports on the mounting surface during jam processing.
The legs are always in contact with the mounting surface until the image forming apparatus main body is tilted to a predetermined tilt state for performing the jam processing. Therefore, the image forming apparatus main body can be inclined to a predetermined inclined state without slipping on the mounting surface, so that the jam processing can be easily performed.

Further, the upper Kiashi, since provided on the bottom surface edge of the image forming apparatus main body, even if very low height of the leg, due to the fact that the image forming apparatus main body is inclined, the image forming apparatus Interference between the main body and the mounting surface can be avoided.
Therefore, in addition to the same effects as the first aspect of the present invention, the overall height of the image forming apparatus can be kept low, which can contribute to the reduction in size and weight of the image forming apparatus.

Furthermore, when di-catcher beam processing, even if a lateral force is applied to the leg image forming apparatus is inclined, it is possible to suppress the wobble of the images forming apparatus performs a smooth jam. It is teeth, since some of them are lacking in the lower end portion of the cylindrical member, the legs, without unnecessarily increasing the amount of projection of the cylindrical member, when tilting the image forming apparatus main body, legs And the mounting surface are kept in contact. Therefore, it is possible to reduce the overall height of the image forming apparatus and contribute to reducing the size and weight of the image forming apparatus.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a main part of a copying machine according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional schematic front view of the copying machine.

FIG. 3 is a partial cross-sectional schematic front view of the copying machine during jam processing.

FIG. 4 is a partial cross-sectional schematic front view of a conventional copying machine.

FIG. 5 is a partial cross-sectional schematic front view of a conventional copying machine during jam processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copier main body 1a Bottom part 1b One end 1d Other end 1e Bottom edge 2 Rotating shaft 17 Bottom plate part 80 Leg 81 Tubular member (reinforcing member) 81a Lower end part

Continuation of the front page (56) References JP-A-4-366968 (JP, A) JP-A-60-176060 (JP, A) JP-A-4-333862 (JP, A) Jpn. (U, U) 1983-191493 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03G 15/00 510-550 G03G 21/16-21/18 B41J 29/06

Claims (1)

(57) [Claims] A bottom plate is supported on the bottom of the main body of the image forming apparatus so as to be relatively rotatable around a predetermined rotation axis, and one end of the main body of the image forming apparatus is lifted during jam processing.
In the image forming apparatus in which the image forming apparatus main body is rotated to a predetermined inclined state with respect to the mounting surface and the bottom plate portion is relatively rotated to open the inside of the apparatus, the image forming apparatus main body is provided on a bottom surface. Mounting feet
Apart from, position the pivot point on the mounting surface when tilting the image forming apparatus main body in a predetermined inclined state, to
That is, the bottom edge of the other end of the image forming apparatus main body has a lower end.
Part is open, and the other end faces obliquely upward from below.
A cylindrical member with a short length cut and cut is formed integrally,
Slightly protrudes from the lower end of the cylindrical member inside the cylindrical member
An image forming apparatus, comprising: a column-shaped leg made of a friction member.