JP2817413B2 - Belt-shaped photoreceptor mounting 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 apparatus for positioning and attaching a belt-shaped photosensitive member of an electrophotographic copying machine to a machine body.

[0002]

2. Description of the Related Art In an electrophotographic copying machine, a charger, an image exposing unit, a developing device, a transfer device, a cleaner, and the like are sequentially arranged around a photoreceptor. The electrostatic latent image is formed by image exposure, the electrostatic latent image is developed into a toner image by a developing machine, and the toner image is transferred to paper by a transfer device and then fixed to form a copy. The photoreceptor is detachably attached to the body for inspection, repair, replacement, and the like. Further, as this type of photosensitive member, a belt-shaped photosensitive member in which a belt-shaped photosensitive material is wound around a driving roller, a tension roller, and a guide roller is known. To attach such a belt-shaped photoreceptor to the fuselage, the belt-shaped photoreceptor is detachably attached to a mounting frame that can be inserted into and pulled out of the fuselage, and the belt-shaped photoreceptor is removed from the fuselage together with the mounting frame. After being mounted on the frame, it is inserted into the body together with the frame to be mounted.

[0003]

With the above-described mounting apparatus, the belt-shaped photosensitive member cannot be accurately positioned and mounted on the body due to the play of the mounting frame on the body or the play of the belt-shaped photosensitive member on the mounting frame. In some cases, an error occurs in the positional relationship between the belt-shaped photoconductor and other devices such as a charger, and a correct copy cannot be obtained.

Accordingly, an object of the present invention is to provide a belt-shaped photoreceptor mounting device which can solve the above-mentioned problems.

A belt-like photoreceptor is removably mounted on a mounting frame provided to be freely inserted into and pulled out from the body, and a mounting plate disposed on the front side of the mounting frame and the belt-like photoreceptor is mounted on the body. The positioning mechanism and the upper hole enable positioning of the photoreceptor on the fuselage, and the belt-like photoreceptor can be positioned on the mounting plate by the positioning pin and lower hole on the near side. A lock mechanism that supports the mounting plate on the fuselage is attached to the mounting plate. A support plate, a receiving plate attached to a mounting plate, and a lock bar detachably attached to the receiving plate and pressed against the supporting plate.

[Operation] The mounting plate is positioned on the body, and the belt-shaped photoconductor can be positioned on the mounting plate. Therefore, the belt-shaped photoconductor can be positioned and mounted on the body, and the mounting plate can be mounted in a short time by attaching and detaching the lock bar. Can be held or removed from the fuselage.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a belt-shaped photosensitive member A has a frame 4 in which one side plate 1 and another side plate 2 are connected in parallel with a connecting member 3 at an interval. A drive shaft 5, a tension roller 6, and a plurality of guide rollers 7 are mounted on one side plate 1 and the other side plate 2, and a belt-shaped photosensitive material 8 is wound around each of the rollers. Side is attached to the fuselage so that the other side plate 2 is on the back side,
In addition, a pair of back side positioning pins 9, 9 are mounted on the side plate 2, and these back side positioning pins 9, 9 are fitted into positioning holes 10, 10 mounted on the body side to position the back side. A pair of near-side position pins 11, 11 are attached to the one side plate 1 on the near side. As shown in FIG. 3, the body 12 has a pair of guide rails 13, 13.
A belt-like photoreceptor A is removably mounted on the mounting frame 14 through a pair of front-side positioning pins 11, 11, and a pair of front-side positioning pins 11, 11 are provided on the mounting frame. The lower holes 18 of the mounting plate 17 are fitted into the substantially V-shaped grooves 16, 16 formed in the front side plate 15, and the front side positioning pins 11 protruding forward from the grooves 16. I have. A pair of upper holes 19, 19 of the mounting plate 17 are fitted to a pair of body-side positioning pins 20, 20 provided on the body 12, and are supported by the body 12 so as not to come off by a lock mechanism 21.

The lock mechanism 21 comprises a support plate 23 mounted on the mounting plate 17 with bolts 22, a receiving plate 25 mounted on the body 12 with bolts 24, and a lock bar 26, as shown in FIGS. 3, 4 and 5. The support plate 23 has a support surface 27 inclined with respect to the vertical, and the support plate 25
Has a vertical groove 28 with an open upper part, the bottom of the vertical groove 28 is a circular portion 29, the lock bar 26 is a round bar having the same diameter as the circular portion 29, and both ends in the longitudinal direction are bent. Handle 30, and cutout surfaces 3 on both sides in the longitudinal direction.
1 and 31 are formed, and the cutout surface 31 has the same width as the vertical groove 28. The lock bar 26 is pushed into the vertical groove 28 using the cutout surface 31 as a guide, and the circular portion 29 is fitted.
When the lock bar 26 is rotated by approximately 90 degrees while holding the handle 30, the lock bar 26 fits into the circular portion 29 to support the lock bar 26 so as not to come out of the vertical groove 28 as shown in FIG. 7 is pressed against the support surface 27 of the support plate 23 to support the mounting plate 17 on the body 12 as shown in FIG.

[0007] As described above, the mounting plate 17 is positioned on the body 12 by the body positioning pins 20 and the upper holes 19, and the belt-shaped photosensitive member A is positioned by the front positioning pins 11 and the lower holes 18 of the mounting plate 17. , The belt-shaped photoconductor A is positioned on the body 12. Also,
If the notch 31 is made parallel to the vertical groove 28 by rotating the lock bar 26 by approximately 90 degrees while holding the handle 30, the lock bar 26 can be pulled out from the vertical groove 28 and separated from the support surface 27 of the support plate 23, thereby. By removing the mounting plate 17 to the front side, the belt-shaped photoconductor A can be pulled out from the body 12 together with the mounting frame 14. Further, since the support surface 27 of the support plate 23 is inclined with respect to the vertical direction, if there is a mounting error, the support plate 23 is finely adjusted in the vertical direction and mounted, so that the support surface 27 and the lock bar 26 are attached. It can be pressed securely. That is, the bolt mounting holes of the support plate 23 are vertically long holes.

[0008]

According to the present invention, the mounting plate 17 is mounted after the belt-shaped photosensitive member A is inserted into the body 12 together with the mounting frame 14, whereby the mounting plate 17 is positioned on the body 12 by the upper holes 19 and the body-side positioning pins 20. Since the belt-shaped photoconductor A is positioned on the mounting plate 17 by the lower hole 18 and the near-side positioning pin 11, the belt-shaped photoconductor A can be positioned and mounted on the body 12, and the lock bar 26 can be mounted on the receiving plate 25. The mounting plate 17 can be attached to and detached from the body 12 in a short time by being removed, so that the operation of attaching and detaching the belt-shaped photoconductor A is simplified, and maintenance such as replacement of the belt-shaped photoconductor A can be performed in a short time. Looks like

[Brief description of the drawings]

FIG. 1 is a plan view of a belt-shaped photoconductor.

FIG. 2 is a front view of a belt-shaped photoconductor.

FIG. 3 is a front view of a mounted state of the belt-shaped photoconductor.

FIG. 4 is a perspective view of one lock mechanism.

FIG. 5 is a perspective view of the other lock mechanism.

FIG. 6 is an explanatory view of a support portion of the lock bar.

FIG. 7 is an explanatory diagram of a support portion using a lock bar.

[Explanation of symbols]

A belt-shaped photoreceptor, 11 front positioning pin, 12
Airframe, 14 mounting frame, 17 mounting plate, 18 lower hole, 19 upper hole, 20 fuselage side positioning pin, 21
Lock mechanism, 23 support plate, 25 receiving plate, 26 lock bar.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03G 15/00 550 G03G 21/16-21/18 G03G 21/00 350-352

Claims (1)

(57) [Claims] 1. A mounting frame 14 is attached to a body 12 so as to be freely inserted and pulled out, and a belt-shaped photoreceptor A is removably mounted on the mounting frame 14.
And a fuselage-side positioning pin 20 provided on the fuselage 12, and the belt-shaped photoconductor A
The lower plate 18 and the upper hole 1
The lower hole 18 of the mounting plate 17 is fitted to the positioning pin 11 on the near side, the upper hole 19 is fitted to the positioning pin 20 on the fuselage side, and the mounting plate 17 is supported by the fuselage 12. A support plate 23 provided with a lock mechanism 21 and having the lock mechanism 21 attached to the mounting plate 17
And a receiving plate 25 attached to the body 12 and the receiving plate 26
A belt-like photoreceptor mounting device, comprising a lock bar 26 which is detachably supported on the support plate 23 and presses against the support plate 23.