JPH01303480A - Attaching structure for parts of photosensitive body - Google Patents

Abstract

PURPOSE:To improve accuracy in positioning by fitting plural pivotal shafts which are coaxially provided with the rotary shaft line of a photosensitive body and protrude in a direction opposite to each other in a supporting member fixed to a machine body and supporting the photosensitive body on both sides in an axial direction. CONSTITUTION:A copying machine 21 has such a constitution that a conveying means 39 is combined with the bottom part of the machine body 22 and angulally displaced around a shaft 63. On the machine body 22 side, a set of supporting member 65, where fit recessed part 64 in which the pivotal shaft 28 of the photosensitive body 27 is fit is formed, is fixed corresponding to both end parts of the pivotal shaft 28. When an image producing unit 43 including the photosensitive body 27 is attached to the machine body 22, both end parts of the pivotal shaft 28 of the photosensitive body 27 in a longitudinal direction are allowed to be fit in the supporting member 65 fixed to the machine body 22. Since the image producing unit 43 is attached to the machine body 22 in a state where it is supported with both hands, it can be positioned in the machine body 22 with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a structure for mounting a photoreceptor component including a photoreceptor used in an electrostatic copying machine to the body of the copying machine.

Prior Art FIG. 11 shows a typical prior art electrostatic copying machine (hereinafter referred to as
FIG. Referring to FIG. 11, a copying machine 1 is equipped with a photoreceptor 2 for forming an electrostatic latent image. This photoreceptor 2 is rotatably held in the direction of arrow B1 by a drive mechanism (not shown). Around the photoconductor 2, there is a charging device 3 that charges the photoconductor 2, a lens 5 that focuses light reflected from the original by a light source 4 onto the photoconductor 2, a developing device 6, a transfer device 7, and a device on the photoconductor 2. A cleaning device 8 is arranged to clean residual toner and the like. In the copying machine 1 of this conventional example, for example, a photoreceptor 2, a charging device 3, and a cleaning device 8 are assembled in at least one housing to constitute a first image forming unit 9.

At the top of the copying machine 1, there are provided an original mounting table 10 on which an original is placed and exposed to light by the light source 4, and an original cover 11 that covers the original and can be opened and opened.

The toner image on the photoconductor 2 is transferred by the transfer device 7 to the copy paper (I21 not shown) fed from the paper feed port 12, and the toner image on the photoconductor 2 is transferred by the peeling device 13, and then transferred to the fixing device by the guide member 14. 15, and, for example, is heated and fixed. Thereafter, the paper is discharged to the paper discharge section 16.

In such a copying machine 1, the operator faces the copying machine 1 from the front side of the page in FIG. That is, various operation panels are arranged on the front side of the paper surface of the copying machine 1, and the first
A front plate 17 shown by a two-dot chain line in FIG. 1 is arranged. The front plate 17 can be freely coated with a film while copying.
By removing h! as shown in FIG. 11 in the copying machine 1. &The sides are exposed, allowing the operator to perform various repair work.

In such a copying machine 1, the image forming unit 9 is inserted into or removed from the copying machine 1 in a direction perpendicular to the paper surface of FIG. On the other hand, this image forming unit 9 includes a photoreceptor 2, and requires strict alignment with, for example, a charging device 3 and a lens 5.

Problems to be Solved by the Invention Conventionally, such positional adjustment has been performed only when the first image forming unit 9
A structure is provided in which the rear end of the sheet of Figure 1 and, for example, the chassis of the copying machine 1 that the end faces, fit into each other,
With this, positioning was carried out using -). However, the structure of the end of the image forming unit 9 on the near side of the first IFI paper surface and the vicinity of the end of the copying machine 1 is such that the image forming unit 9 can be easily inserted/removed from the copying machine 1 as described above. There is a relatively large distance between them. Therefore, the image forming unit 9 is connected to the copying machine 1 in a so-called cantilever manner. Therefore, there was a problem in that the positioning accuracy of the image unit 9 as a whole deteriorated.

The image forming unit 9 also includes a cleaning device 8, and therefore, the image forming unit 9 includes a cleaning device 8, a waste toner conveying means 18, and a photoreceptor 2, which are rotating parts 2-). They must be driven in synchronization with each other. For this reason, in the prior art, a gear is provided in the image forming unit 9 to connect the drive gears provided on the photoreceptor 2 and the waste toner transport means 18, or For example, a structure for individually driving each drive gear was provided on the copying machine 1 side.

In such conventional technology, in the former case, an area occupied by the connecting gear is required in the image forming unit 9;
In addition, there were other problems, such as an increase in the number of parts, which increased the cost and made the configuration more complex.

Even in the latter case, a similar problem occurs on the copying machine 1 side.

An object of the present invention is to solve the above-mentioned technical problems, to greatly facilitate the mounting operation of photoconductor parts into the body of the machine, and to
It is an object of the present invention to provide a mounting structure for photoreceptor components that can significantly improve positioning accuracy during mounting.

Means for Solving the Problems The present invention is provided in a body of a copying machine in which copying paper is fed from one side and conveyed through the machine, a document image is copied, and then ejected from the other side. , in a mounting structure for a photoconductor component that aligns a light body when rotated, the photoconductor component is provided with a plurality of pivots that are coaxial with the rotational axis of the photoconductor and protrude in mutually opposite directions; A plurality of support members are provided which are fixed and into which the pivots of the photoreceptor parts are fitted to determine the mounting position of the photoreceptor parts, and the photoreceptor parts are attached to the support members whose pivots are fitted to the support members, and which are attached to the body side. This is a mounting structure for a photoreceptor component, characterized in that the photoreceptor component is mounted with an angular displacement.

According to the present invention, when mounting the photoreceptor component on the aircraft body, a plurality of pivots that are coaxial with the rotating shaft edge of the photoreceptor included in the photoreceptor component and protrude in mutually opposite directions are fixed to the aircraft body. The support member is fitted into the support member.

As a result, the photoreceptor is supported on both sides in the axial direction, and positioning accuracy is significantly improved.

Further, after fitting the pivot into the support member, the photoreceptor component is angularly displaced toward the fuselage, and the photoreceptor component is mounted on the fuselage. This makes the mounting operation much easier.

Embodiment 1 FIG. 4 shows an electrostatic copying machine (L7J) according to an embodiment of the present invention.
21 is a vertical cross-sectional view of a copying machine 21. Referring to FIG. 1, on the body 22 of the copying machine 21, there is a document loading table 2 made up of a transparent glass plate on which a document or the like is placed.
3 is provided integrally with the document cover 24. The light reflected from the original by the light source 25 is reflected by the SELFOC lens 26.
), the image is formed on the photoreceptor 27 in the form of an inverted right cylinder, and the photoreceptor 2
7 is an arrow around axis 28? 'fA1 direction.

Around the photoreceptor 27 is an arrow 'f! Along the FAI direction, there are two chargers that charge the entire surface of the hexagonal body 27 using, for example, a corona discharge phenomenon, and a photoreceptor on which an electrostatic latent image is formed by irradiating the original image with the SELFOC lens 26. a developing device 30 that forms a toner image on the copy paper 27; and a transfer device 3 that transfers the toner image onto copy paper.
1, a slanted sheet 1 separation roller 32 for peeling off the copy paper on which the toner image has been transferred from the photoreceptor 27, and the transfer device F[!
A cleaning device 33 for collecting toner remaining on the photoreceptor 27 is arranged in this order.

The phenomenon device 30 uses, for example, a phenomenon brush 34 to apply the l-ner stored therein onto the photoreceptor 27, and
In the cleaning device 33, the toner remaining on the photoreceptor 27 is scraped off by a blade 35. Inside the waste toner collection container (hereinafter referred to as the collection container) 36, the waste toner is transported to the right in FIG. .

In the copying machine 21, copy paper is supplied from the paper feed 038, and after the toner image is transferred by the transfer machine 31,
! It is peeled off from the 8-light body 27 by the +1 separation roller 32,
The sheet is conveyed in the direction of arrow A2 by a conveyance means 39, which is a device comprising, for example, a pair of heat-generating rollers, and then discharged to the outside of the machine body 22 by a sheet discharge roller 41. Further, a fan 42 is provided within the body 22 to exhaust heat from the fixing device 40 to the outside.

In the copying machine 21 of this embodiment, the photoreceptor 27, the charger 2
9 and the cleaning device 33 are incorporated into the same housing to constitute an integrated image forming unit 43. The image forming unit 43 is configured to be detachably attached to the body 22 as described in detail.

FIG. 2 is a perspective view of the image forming unit 43, and FIG. 3 is a sectional view taken from the section line ■1■ in FIG.
1 is a cross-sectional view taken from section line IV--IV in FIG. 3, and FIG. 5 is a cross-sectional view taken from section line ■1■ in FIG. Referring also to FIGS. 2 to 5, the image forming unit 4
3 will be explained.

The image forming unit 43 includes a casing 44 made of, for example, a molded resin material, and a blade 35 is fixed to an upper side of an opening 45 of the casing 44 via a mounting plate 46 with bolts 47. Further, a toner collecting plate 48 is provided below the blade 35 to receive the toner peeled off from the photoreceptor 27 by the blade 35.

A conveyance member 37 is provided near the opening 45 .

As shown in FIG. 5, the conveying member 37 is constructed by having a plurality of conveying blades 50 fixed to four rotating shafts in the circumferential direction.

This rotation @4 both ends in the longitudinal direction pass through a pair of side walls 51 and 52 extending from both sides in the axial direction of the conveying member 37 in the housing 44 and are held therein. A drive gear 53 is fixed to one end thereof. The housing 44 includes the transport member 3
A backflow prevention plate 80 for preventing backflow of waste toner toward the opening 45 side is formed on the opposite side of the L/toner recovery plate 48 of No. 7.

A photoreceptor 27 is placed in contact with the blade 35 . The photoreceptor 27 includes a cylindrical body 54 made of a metal material whose surface is coated with a spectroscopic material, and lid members 55 and 56 made of a sonic resin material are fixed to both ends of the cylindrical body 54. A driving gear 57 is integrally formed on the cover member 56 of the driving gear 53@.

The upper part of the photoreceptor 27 is closed, forming an optical path 58 through which the light from the SELFOC lens 26 passes. A charger 29 extending parallel to the axial direction of the pivot shaft 28 is disposed at a position shifted from directly above the pivot shaft 28 to the casing 4 4 +1111, and is fixed to the side wall 51.52 with screws 59.60.

FIG. 6 shows that the copying machine 21 is placed on the work table 61 and
7 is a cross-sectional view showing a state in which the paper discharge port 62 is directed upward from the state shown in FIG. Referring also to FIG. 6, in the copying machine 21 of this embodiment, the conveying means 39 also serves as the bottom of the body 22, and is configured to be freely angularly displaceable around a shaft 63. Further, a pair of support members 65 having fitting recesses 64 into which the pivot shaft 28 of the photoreceptor 27 is fitted are fixed to the body 22 side in correspondence with both ends of the pivot shaft 28 . Further, a drive gear 66 for rotationally driving the drive gears 53 and 57 in the same direction, for example, is rotatably driven by a configuration not shown and is provided on the body 22 side.

The operation of mounting the image forming unit 43 on the copying machine 21 of this embodiment will be described below. As shown in No. 6 (21), the copying machine 21 is stood up and the three transport means are opened.The image forming unit 43 prepared separately is then inserted into the machine body 22 in the direction of arrow A3 in FIG. At this time, both ends of the pivot shaft 28 are inserted so as to fit into the fitting recesses 64 of the supporting member 65 provided in the pair.

The state in which the insertion is completed in this way is shown in No. 7I2I. In FIG. 7, the support member 65 is omitted. The image forming unit 43 that has been inserted can be angularly displaced around the axis of the pivot 28, and is angularly displaced in the direction of arrow A4. This angular displacement completed state is shown in FIG. After this, the conveying means 39 is angularly displaced in the arrow nA4 direction to
When the image forming unit 43 is fixed to the copying machine 21, the operation of attaching the image forming unit 43 to the copying machine 21 is completed.

9 and 10 are cross-sectional views showing the engagement state between the drive gears 53 and 57 on the image forming unit 43 side and the drive gear 66 on the body 22 side in the above-described operation of attaching the image forming unit 43 to the body 22. It is a diagram.

As described with reference to FIGS. 6 and 7 [21], when the pivot shaft 28 is fitted into the support member 65, the drive gears 57, 53 are in the state shown by the broken line in FIG. After this, when the image forming unit 43 is angularly displaced in the direction of arrow A4, the drive gears 53 and 57 are fully engaged with the drive gear 66 in common.
They are rotationally driven in common by a drive gear 66 on the side.

As described above, according to this embodiment, when the image forming unit 43 including the photoreceptor 27 is mounted on the aircraft body 22, the photoreceptor 27
Both longitudinal ends of the pivot shaft 28 are fitted into support members 65 fixed to the body 22. As a result, the image forming unit 43 is attached to the body 22 in a so-called two-handed state, so that positioning with respect to the body 22 can be performed with high precision.

Further, when the image forming unit 43 is mounted on the body 22, the three conveying means forming the bottom of the body 22 can be opened. This makes it much easier to attach and detach the image forming unit 43.

Further, in this embodiment, only a single drive gear 66 is provided on the body 22 side to transmit driving force to the drive gears 57 and 53 for rotationally driving the photoreceptor 27 and the conveying member 37.
The drive gears 53 and 57 can be driven in common. This allows the configuration related to the drive gears 53, 57 to be significantly simplified compared to the prior art.

In the above f] embodiment, the image forming unit 43 is the photoreceptor 27,
Although not described as a configuration consisting of a combination of a charger 29 and a cleaning device 33, image formation can be performed by combining the low photoreceptor 27 with any configuration such as a developing device 30, a transfer device 31, a peeling roller 32, etc. The unit 43 may also be configured.

Effects of the Invention As described above, according to the present invention, when a photoreceptor component is mounted on an aircraft body, a plurality of pivots that are coaxial with the rotational axis of the photoreceptor included in the photoreceptor component and protrude in mutually opposite directions are provided. is fitted onto a support member fixed to the fuselage. As a result, the photoreceptor is supported on both sides in the axial direction, and positioning accuracy is significantly improved. Further, the photoreceptor component is mounted on the fuselage by angularly displacing the rock and photoreceptor component toward the fuselage, with the pivot fitted to the support member. This makes the installation process much easier.
It becomes easier.

[Brief explanation of the drawing]

1 is a sectional view of the copying machine 21, the second is a perspective view of the image forming unit 43, and the third is a perspective view of the image forming unit 43.
is a sectional view taken from section line ■--■ in FIG. 2, FIG. 4 is a sectional view taken from section line IV-IV of 3rd
] is a sectional view taken from the section line ■-■ in Figure 3, No. 6U2
10I2I is a cross-sectional view showing the procedure for mounting the image forming unit 43 on the body 22, and FIG. 11 is a cross-sectional view showing a typical prior art. 1...-copying machine, 2...body, 27...photoreceptor, 2
8... Pivot, 43... Image forming unit, 53, 57.
66...Drive m wheel, 63...Axle, 64...Fitting recess, 65...Supporting member representative Patent attorney Number of strokes Keiichibetsu Figure 3 Figure 2 Figure 4 Figure 5 O] (Y') ward -, 1 / -/

Claims (1)

[Scope of Claims] A rotatably driven photosensitive device that is detachably installed in the body of a copying machine, where copy paper is fed from one side and conveyed through the machine, a document image is copied, and then ejected from the other side. In a mounting structure for a photoconductor component including a body, the photoconductor component is provided with a plurality of pivots coaxial with the rotation axis of the photoconductor, protruding in mutually opposite directions, and fixed to the body. A plurality of support members are provided in which the pivots are fitted to determine the mounting position of the photoreceptor component, and the photoreceptor component is mounted by being angularly displaced toward the aircraft body after the pivot shaft is fitted to the support member. A mounting structure for photoreceptor parts, characterized in that: