JPS60205563A - Method for setting photosensitive body - Google Patents

Abstract

PURPOSE:To ensure a sufficient space necessary for mounting and dismounting the upper structure of a photosensitive body and to facilitate this mounting and dismounting operation by executing this operation from the opened side of the upper structure. CONSTITUTION:When the unit 44 of a photosensitive body is fixed by fitting a rail 19 to a fitting part 26, since it is inserted from the opened upper structure 2, a sufficient space necessary for insertion can be ensured. It is not necessary to form notches on the outside plates of the upper structure 2 or the lower structure 3 for the insertion, and the outside structure of the main body 1 can obtain sufficient strength. Further, the rail 19 locked with a locking mechanism is joined with the upper structure 2 to form one body and can be turned around the shaft 4 together with the photosensitive body unit 44. When the unit 44 is inserted and the rail 19 is locked, and then, the upper unit 2 is opened, the unit 44 is moved upward in one body.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a method for setting a photoreceptor in a copying machine, a hook-stain printer, etc.

PRIOR ART In recent years, the main body of a copying machine or the like has been formed by being divided into an upper structure and a lower structure, and the upper structure is connected to the lower structure by a support shaft so as to be able to rotate in the vertical direction. The body is detachably attached to the upper structure.

There is a method in which the 0-point plug whistle is played = 11 islands, 1 μm, 9 + 1 - the side of the music - 7 (Japanese Patent Application Laid-Open No. 59-2054). In this copying machine, the photoreceptor is attached and detached from the side perpendicular to the rotating surface of the upper structure.

Therefore, when attaching and detaching the photoreceptor, there are various operating members placed on the sides of the main body, and the width of the opening between the upper structure and the lower structure becomes narrower as the position approaches the support shaft. This makes it difficult to attach and detach the photoreceptor. In addition, it was necessary to form a large notch in the side plate in the direction of attachment and detachment.

It is not possible to obtain an outer structure with sufficient strength, and it is difficult to miniaturize the copying machine.

the purpose The present invention was made in view of these points.

To provide a method for setting a photoconductor that allows easy attachment and detachment of the photoconductor.

composition An embodiment of the present invention will be described based on the drawings.

The main body 1 of the copying machine consists of an upper structure 2 and a lower structure 3, and the upper structure 2 is provided so as to be openable upwards about a support shaft 4 as a fulcrum, as shown in FIG. . The upper structure 2 includes a static elimination lamp 5, a charger 6,
A light source 7 and an imaging element 8 are supported, and a developing unit 9 and a transfer charger 10 are supported on the lower structure 3. The right side of the transfer charger 10 is a paper feed section, and the transfer paper 1
A paper feed roller 12. A transport separation roller 13 and a registration roller 14 are provided in this order. On the other hand, the left side of the transfer charger 1o is a fixing wandering paper section.

Conveyance roller 15. A fixing unit 16 and a paper discharge tray 17 are provided in this order. Side plates 1 on both sides of the upper structure 2
8, each has a rail 1 with a roughly U-shaped cross section.
9 is provided so as to be freely rotatable in the vertical direction around the axis of the support shaft 20 within a predetermined rotation range and to be freely locked at a predetermined position by a locking mechanism (not shown).

Next, a lower case 24 that holds the driving roller 21, the driven roller 22, and the tension roller 23 is provided, and the rails 19 are provided on the outer surfaces of the side plates 25 on both sides of the lower case 24.
Fitting portions 26 that are slidably fitted are provided respectively. The driving roller 21 and the driven roller 22 are supported between the side plates 25 in a fixed position, and the support shaft 27 of the driven roller 22 has support plates 28 located inside the side plate 25 on both sides thereof. It is loosely fitted and can be rotated freely.

The tension roller 23 is supported between these support plates 28. And these rows 921.22.2
A belt-shaped photoreceptor 29, which is a photoreceptor, is wound around the photoreceptor 3. Further, the lower case 24 is integrally provided with a 1-toner collection container 31 that stores toner scraped off by a cleaning blade 30 that is in sliding contact with the belt-shaped photoreceptor 29.

Here, an upper case 32 is provided above the belt-shaped photoreceptor 29 and connected to the lower case 24 . An engaging portion 34 that engages with an engaging portion 33 formed at one end of the lower case 24 is formed at one longitudinal end of the upper case 32, and an engaging portion 34 is formed at the other longitudinal end of the upper case 32. An engaging portion 36 that engages with an engaging portion 35 formed at the other end of the lower case 24 is formed, and a screw mounting hole 38 is formed opposite to a screw hole 37 formed at the other end of the lower case 24. . Furthermore, locking claws 40 are formed on both sides of the upper case 32 to resiliently engage with locking portions 39 formed on the lower case 24 .

Furthermore, springs 42, which are tension members, are attached to both sides of the upper case 32 and resiliently abut against spring receivers 41 formed on the support plate 28.

Note that by engaging the locking pawl 40 with the locking portion 39 and tightening the screw 43 into the screw hole 37 through the screw mounting hole 38, the lower case 24 and the upper case 32 are integrated, and the photoreceptor unit 44 is integrated. has been done.

In such a configuration, first, each roller 21, 22.
The operation of winding the belt-shaped photoreceptor 29 around the photoreceptor 23 will be explained. The drive roller 21 and the driven roller 22 are fixed in position, but the tension roller 23 is not receiving any external force and is supported by the support shaft 2 of the driven roller 22 together with the support plate 28.
It is rotatable around the axis of 7. For this reason, the support plate 28
From FIG. 3, each roller 21, 22 . Around '23
The belt-shaped photoreceptor 29 can be easily wound.

The belt-shaped photoreceptor 29 wound in this way is not given the necessary tension when copying,
Next, the upper case 32 is connected to the lower case 24 in order to apply this tension. Lower case 24/\upper case 3
2, when the engaging portions 33 and 34 and the engaging portions 35 and 36 are engaged to determine the connecting position, the locking pawl 40 engages with the locking portion 39. It will be in a temporarily fixed state. Therefore, the screw 43 can be easily tightened into the screw hole 37 through the screw attachment hole 38.

After tightening the screw 43, the engagement between the screw 43 and the locking portion 39/\ of the locking pawl 40 ensures the connection between the lower case 24 and the upper case 32.

By connecting the upper case 32, the lower end of the spring 42 comes into elastic contact with the spring receiver 41, and the support plate 28 and tension roller 23 move around the axis of the support shaft 27 in the direction of arrow A' shown in FIG. The belt-shaped photoreceptor 29 is displaced in the direction indicated by mark A', and the belt-shaped photoreceptor 29 is given a necessary tension and becomes stretched. In this way, the lower case 24 and the upper case 3
2 can be easily connected, and tension can be easily and reliably applied to the belt-shaped photoreceptor 29.

Next, the installation of the photoreceptor unit 44 in which the belt-shaped photoreceptor 29 is wound around the rollers 21, 22, and 23 and the lower case 24 and the upper case 32 are connected will be described. The upper structure 2 is rotated upward around the axis of the support shaft 4, and the rail 1
Unlock 9. By releasing this lock, rail 1
9 rotates around the axis of the support shaft 20 in the direction of arrow B shown in FIG. 2, and stops in an inclined state with the support shaft 20 side facing downward. Then, the fitting portion 26 is fitted into the rail 19, and the photoreceptor unit 44 is inserted from the open side of the upper structure 2 and the lower structure 3 in the direction of arrow C shown in FIG. After inserting the rail 19 to the predetermined setting position, move the rail 19 to the second position.
The upper structure 2 is rotated in the direction of arrow B' shown in the figure to lock, and then the upper structure 2 is rotated downward to a predetermined position, thereby completing all settings. When inserting the photoreceptor unit 44 by fitting the fitting portion 26 to the rail 19, sufficient space necessary for insertion must be secured because the insertion is performed from the open side of the upper structure 2. This makes it possible to secure sufficient insertion space even when the main body 1 is made smaller. Therefore, the photoreceptor unit 44 can be easily inserted and removed for replacement. In addition, the upper structure 2
There is no need to provide a notch for insertion in the outer plate of the lower structure 3, and the outer structure of the main body 1 can obtain an extra strength.

Furthermore, since the rail 19 is inclined diagonally downward along the insertion direction, the photoreceptor unit 44 can be reliably inserted into the predetermined set position l\ by movement due to its own weight. This can prevent damage to the photoreceptor unit 44 due to closing of the upper structure 2 when the upper structure 2 cannot be closed or is insufficiently inserted.

Furthermore, the rail 19 locked by the locking mechanism rotates around the axis of the support shaft 4 integrally with the upper structure 2, and after the photoreceptor unit 44 is inserted and the rail 19 is locked, the upper When the structure 2 is opened, the photoreceptor unit 44 also moves upward integrally. Therefore, there is a sufficiently wide space between the open upper structure 2 and the lower structure 3.

When a jam occurs, removal of the jammed transfer paper 11 and maintenance inspection can be easily performed.

Effects According to the present invention, by attaching and detaching the photoreceptor held in the upper structure from the open side of the upper structure as described above, sufficient space is secured for attachment and detachment, and attachment and detachment can be easily performed. You can and even more.

It is not necessary to form a large notch in the side plate of the main body for attaching and detaching the photoreceptor, and there are advantages such as being able to obtain a sufficiently strong outer structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic side view of the entire structure, Fig. 2 is a schematic side view showing the upper structure in an open state, and Fig. 3 is a schematic side view of the upper case of the photoreceptor unit. FIG. 4 is an enlarged vertical side view showing the photoreceptor unit 1'' in a separated state, and FIG. 5 is a cross-sectional view taken along line a-a in FIG. 1. ... Main body, 2... Upper structure, 3... Lower structure, 4... Support shaft (support part), 29... Belt-shaped photoreceptor (photoreceptor) Applicant Rico Co., Ltd. −

Claims (1)

[Claims] A main body is provided which is divided into a lower structure and an upper structure that holds a photoconductor, the upper structure is connected to the lower structure so as to be rotatable in the vertical direction about a support part as a fulcrum, and the upper structure is A photoreceptor setting method characterized in that the photoreceptor is attached and detached from the open side when the photoreceptor is rotated upward about the support portion as a fulcrum.