JPH03272316A - Rotor - Google Patents

Abstract

PURPOSE:To simplify structure, reduce the cost and attain light weight without damaging the elasticity of a contact roller and also improve radial and circumferential positioning accuracy by providing a hollow cylinder elastically deformable in the radial direction and supporting members enveloping both end outer peripheries of the cylinder without constraining the radially inward deformation of the cylinder. CONSTITUTION:Clearances are provided between the outer diameter of a hollow cylinder 10 and the inner diameters of supporting members 11R, 11L in order to be fitted to a machine. The supporting members 11R, 11L are respectively formed into such cylindrical shape as to be fitted to the end parts of the cylinder 10, and the respective one-side ends thereof are closed. The center of each member is pierced by a shaft 12 and functions as the shaft for supporting a rotor rotatably. The cylinder 10 is substantially a cylinder body with both ends opened, and its inward elastic deformation by the contact of a developing roller 13 is performed easily, and its deformation quantity in the axial direction is uniform, so as to obtain the required contact width. Accordingly, at the time of applying the same positive outer force in the radial direction, the radially inward deformation quantity becomes equal regardless of the axial position, and thus the elasticity of an image holding body is prevented from being damaged. The structure is thereby simplified, the cost is reduced, and light weight is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotating body used as a component of an image forming apparatus such as a printer or a copying machine.

(Prior art) -a. In the electrophotographic process, there is a charging process in which a photoreceptor is charged in advance, an exposure process in which the charged photoreceptor is exposed to a light image, and a latent image carried on the photoreceptor is visualized by exposure. Development process, transfer process that transfers a visible image onto paper, fixing process that fixes the image on paper after transfer, cleaning process that cleans the photoreceptor after transfer, static neutralization that removes static electricity from the photoreceptor in preparation for the next charge. There are various processes, and image formation by a dot printer is also done through a similar process.

In an image forming apparatus that performs these processes, the photoreceptor and other members for performing most of the above processes are composed of rotating bodies, and are w4-order.

It consists of rotating bodies such as a photoreceptor drum, charging roller, developing roller, transfer roller, fixing roller, and neutralizing roller.

Each of these rotating bodies is configured to be in pressure contact with another rotating body, and the elastic displacement during pressure contact is affected by the degree of uniform contact in the axial direction.

For example, in the developing process, in order to perform sufficient development, it is necessary to obtain a predetermined developing contact width with a weak contact pressure in the contact state of the developing roller with respect to the photoreceptor drum, as shown in the following papers a and b. It is also introduced in

EP-33Japan hard Copy'8g,
May 1988 PROCESS USING ELA
STIC DEVELOPMENT ROLLER”.

P193-1955PESE'S 42nd Annu
alConference.

May 14-19.1989 Therefore, it is necessary to bring the photosensitive drum and the developing roller into contact with a weak contact pressure, but there is a limit to elastically deforming the developing roller as a means of achieving this, as it becomes a factor that disturbs the image. . For this reason, it has become necessary to make the photoreceptor drum elastically deformable.

The following techniques are considered to be applicable to elastically deformable photoreceptor drums.

■A flange integrally connected to the end of a hollow cylinder.

That is, it is formed by drawing a metal material, one end is integrally molded as a bottom part, and a flange is integrally attached to the open end on the other side (Japanese Patent Application Laid-Open No. 56-15961110).
(see publication).

Another method uses a rotating body in which a screen photoreceptor is attached to a drum-shaped frame with a missing middle part and the frame is supported by rollers from the inside (see Japanese Patent Laid-Open No. 78241/1983).

Furthermore, the inner periphery of each end of the cylindrical body with one end frontage is tapered,
A flange is fitted and fixed to this to constitute a photosensitive drum as a rotating body (see Japanese Patent Application Laid-Open No. 62-67580).
.

However, none of these techniques takes into account elastic surface displacement caused by pressure contact with other rotating bodies, such as the developing roller, and poses problems such as cost, precision, and space saving.

(2) A photosensitive drum which is a rotating body is constructed by sequentially providing an elastic layer around a metal core, and a metal layer and a photosensitive layer around the outer periphery of the elastic layer (see Japanese Patent Laid-Open No. 192279/1983).

This technology takes into account elastic displacement caused by pressure contact with other rotating bodies.

■An image carrier drum that is a rotating body supported by a recoro from the outer periphery of both ends of a hollow cylinder with both ends open (Japanese Patent Laid-Open No. 61-203
(See Publication No. 46).

This technology also does not focus on elastic displacement.

(Problem to be solved by the invention) Conventional photosensitive drums have the following problems.

Regarding the technique (2) above, since both ends are restrained by flanges, etc., the elasticity in the radial direction differs depending on the position in the axial direction, so when it comes into contact with the developing roller,
The amount of inward deformation also differs, making it impossible to obtain a uniform contact width in the axial direction, resulting in disturbed image quality.

Regarding the technique (2) above, it is costly to provide the elastic layer, and the elasticity of the photoreceptor drum may be impaired if the elastic layer is provided. In addition, even if this is not the case, radial positioning accuracy cannot be obtained unless a member is provided to restrain deformation in the radial direction.Incidentally, in Fig. 28, reference numeral 1 is a core bar, reference numeral 2 is an elastic layer, and there is no external force. Figure 28(a) of
Compared to this, in the state shown in FIG. 28(b) where external force F is applied, elasticity M2 is largely displaced, resulting in loss of elasticity.
Positioning accuracy in the radial direction becomes poor. Furthermore, since the striking force from the core metal is transmitted to the drum via the elastic layer, positioning accuracy in the circumferential direction cannot be achieved.

In the present invention, when the same positive external force is applied in the radial direction,
The amount of deformation inward in the radial direction is the same regardless of the position in the axial direction, the elasticity of the contact roller is not impaired, the structure is simple, the cost is low, the weight is reduced, and the positioning accuracy in the radial direction is achieved. To obtain a rotating body that satisfies various conditions such as achieving positioning accuracy in the circumferential direction, and that can obtain a wide and uniform contact width with weak contact pressure without limiting the material of the contact roller. The purpose is to

Furthermore, even in the case of a rotating body other than a photoreceptor drum that requires a wide and uniform contact width in relation to a roller that comes into contact with it, the present invention provides a rotating body that can obtain a wide and uniform contact width with a weak contact pressure. The purpose is to get a body.

(Means for Solving the Problems) In order to achieve the above object, the rotating body of the present invention includes a hollow cylinder that can be elastically deformed in the radial direction.

A support member is provided that surrounds and supports the outer periphery of both ends of the hollow cylinder so as not to restrain the hollow cylinder from deforming inward in the radial direction.

In this case, if the outer diameter of the hollow cylinder is smaller than the inner diameter of the support part of the support member, it is preferable to provide the support member with a member to prevent the hollow cylinder body from slipping. In this case, magnetic force may be used as the slipping prevention means. can.

Furthermore, it is effective to make the outer diameter of the hollow cylinder larger than the inner diameter of the support part of the support member, or to configure the inner side of the side plate of the support member and the hollow cylinder support part of the support member to form an obtuse angle.

(Function) Both ends of the hollow cylinder are substantially open, and the armpits are surrounded and supported in a non-integral manner by the support member without restraining inward deformation.

(Example) Example 1 (see FIGS. 1 to 8).

This example is characterized in that there is a margin between the outer diameter of the hollow cylinder and the inner diameter of the support member.

The rotating body 9 is shown in an exploded state in FIG. 1 and in an assembled state in FIG. 2, and is installed in a machine in an assembled state as shown in FIG.

In each of the above, the symbol lO is a hollow cylinder, the symbol 11R,
ILL each represents a support member.

To explain the case where the rotating body is configured as an image carrier drum, the hollow cylinder 10 has an outer diameter of 60IIIl and a wall thickness of 0.1
The image carrier is manufactured by coating a photosensitive material on the outer periphery of an aluminum tube with a length of 250 mm and is elastically deformable in the radial direction.

Each of the support members 11R and IIL has a cylindrical shape that can be freely fitted into the end of the hollow cylinder IO, and one end is closed. The material is stainless steel. Furthermore, rubber with a thickness of lllll11 is pasted on the contact portion with the hollow cylinder.

Further, a shaft 12 passes through the center of each of these members, and functions as a shaft that rotatably supports the rotating body.

When the other rollers are still not in contact with the rotating body constructed in this manner, the hollow cylinder 10 as shown in FIG. 3 descends below the inner periphery of the support members 11R and IIL due to the action of gravity.

On the other hand, in FIG. 4, the rotating body has an outer diameter of 20II1.
1. Developing roller 1 as a developer carrier with a length of 200 am
3 and 1 parallel to the axis 12 and radially inside the hollow cylinder 1o.
The state is shown when a contact is made with a force of 500 gf.

The amount of bite at this time was approximately 51,111. Support member 11R on the side opposite to the side in contact with the developing roller 13
, LIL's inner periphery is in close contact with the outer periphery of the hollow cylinder io. Here, to explain the rotational drive system, the support member is on the drive side and the developing roller side is connected by gears.
Frictional contact between the support member and the hollow cylinder 10 serving as the photosensitive drum exists between the two. Therefore, supporting member 1
Even when 1R and IIL were rotated to rotate the developing roller 13, the static friction between the supporting member and the hollow cylinder was sufficiently large that no slipping occurred between the two.

In this example, the hollow cylinder 10 is substantially a cylinder with both ends open, and elastic deformation inward by contact with the developing roller 13 is relatively easy, the amount is uniform in the axial direction, and the amount of elastic deformation is uniform in the axial direction. contact width can be obtained.

In addition to the above-mentioned aluminum, the material of the image carrier body may be metal such as nickel or resin, and the outer diameter, inner diameter, wall thickness, and length can be changed depending on the purpose.

The power transmission means between the hollow cylinder IO and the support members 11R, IIL may be a combination of a serration gear and a serration shaft as shown in FIG. 5, or a combination of a serration gear and a serration shaft as shown in FIG. As shown, a configuration using perforations is also possible.

In addition, when using perforations.

Another advantage is that the hollow cylinder IO can be prevented from shifting in the axial direction.

In Fig. 5, Fig. 5(a) is a front view of the rotating body;
FIG. 5(b) shows a cross section of the support member taken along the line AA' in FIG. 5(c).

Similarly, in Fig. 6, Fig. 6(,) is a front view of the rotating body, and Fig. 6N(b) is the A-A of Fig. 6(c) of the support member.
'Shows a cross-section in the direction of arrows.

Regarding the supporting member and the shaft, as in the above example, the shaft 1
In addition to the configuration in which the support member 2 is penetrated, as shown in FIG. 7, it is also possible to adopt a configuration in which the support member 1 is not penetrated, and to make the axle load 2-1 protrude only to the outside of the support member and to configure it integrally. In this case, each member exists independently as shown in FIG. 7 before being assembled into one machine, and is assembled into a state in which it functions as a photosensitive drum only after being assembled into the machine as shown in FIG. 8.

That is, in FIG. 8, by installing an extensible coil spring 16 between the side plates 14 and 15 of the machine, the elasticity of this spring causes the support members 11R, IIL to
form a rotating body 9 by receiving forces in the direction of approaching each other.

Therefore, by pulling the knob 17 screwed onto the shaft 12-1 in the direction of the arrow, only the hollow cylinder 10 can be replaced, leaving the support members 11R and ILL as they are, and easily replaced with a new image carrier. It can be done.

As described above, according to the fifth embodiment, by supporting the image carrier body so as not to restrict its deformation inward in the radial direction, the image carrier body can be moved to the axial position when the same positive external force is applied in the radial direction. However, the amount of deformation inward in the radial direction is the same, and the elasticity of the image carrier body is not impaired. The structure is simpler than those in which a hollow cylinder is supported by multiple rollers, or an endless belt-shaped image carrier is supported by multiple rollers, etc., so it is not only possible to reduce costs and weight, but also to reduce the radius. Positioning accuracy in the direction can be easily obtained, and therefore, a wide and uniform developer contact width can be obtained with a weak contact pressure without limiting the material of the developer carrier.

In addition, since the outer diameter of the hollow cylindrical body is smaller than the inner diameter of the supporting member, it is easy to insert the hollow cylindrical body into the supporting member when assembling the rotating body, and the contact pressure is high. Even so, the static friction force between the hollow cylindrical body and the support portion of the support member is excellent in that it does not decrease.

Example 2 (see FIGS. 9 to 14).

This example is characterized by the fact that when there is a space between the outer diameter of the hollow cylinder and the inner diameter of the support member, a large number of elastic plate-shaped slip prevention members are provided at equal intervals around the outer circumference of the support member. .

In the case of Example 1, there is no problem when the hollow cylinder is brought into contact with another rotating body, but if the hollow cylinder is not brought into contact with it, the positions of the hollow cylinder and the supporting member may shift, and the position of the supporting member may shift. In some cases, there is a risk that the back surface of the hollow cylinder may be damaged or that the hollow cylinder may be plastically deformed when it is brought into contact with another rotating body again.

According to this example, such concerns are resolved, and even if no other rotating body is brought into contact with the hollow cylinder, no misalignment will occur between the hollow cylinder and the support member.

In FIG. 9, the hollow cylinder 10-2 has its material, shape,
Both dimensions are the same as the hollow cylinder IO in the first embodiment.

On the other hand, the supporting members 1l-2R and 1l-2L are hollow cylinders 10
-2 is a stainless steel flange with an inner diameter of 68 mm, and the outer diameter of the hollow cylinder is 60 mm, so the diameter is 8 mm.
There is plenty of space at 1111@.

In this spacious space, several other anti-slip members 18 are interposed at equal intervals with their base ends fixed to the inner periphery of the support member.

As shown in an enlarged view in FIG. 1O, this anti-slip member 18 has a two-layer structure consisting of a non-slip material 18A and a reinforcing plate 18B that reinforces and supports this non-slip material.

The anti-slip material 18A is made of a rubber plate with a thickness of 1 mm, and is fixed to a reinforcing plate 18B made of an elastic material such as a metal plate with a thickness of 0.51 mm. The dimension a is matched to the width of the support member, and one end of the reinforcing plate 18B is fixed to the inner circumference of the support member at equal intervals.

As shown in FIG. 11, before the hollow cylinder IO is assembled, the free end side of the anti-slip member 18 is slightly curved and raised from the center of the support member.

For example, if force is applied to the free end side of each anti-slip member 18 as shown by the arrow in FIG. constitutes a smooth circumferential surface.

When a hollow cylinder is incorporated into such a support member, and when no other rotating body is in contact with it, the first
As shown in FIG. 3, the hollow cylinder 10-2
In this state, when an external force is applied to shake the hollow cylinder 10-2, it floats concentrically with the supporting member due to the elasticity of the hollow cylinder 10-2.
Although the hollow cylinder 10-2 moves, no displacement occurs between it and the support member due to the friction of the anti-slip material 18A.

Next, as shown in Fig. 14, the outer diameter is 20 mm and the length is 200 mm.
When the 1 m long developing roller 13 comes into contact parallel to the axis, the hollow circle ff110-2 is brought into close contact with the support member 1l-2L via the displacement prevention member 18. In this case as well, the displacement preventing member only prevents displacement with respect to the hollow cylinder 1O-2, and does not restrict the deformation of the hollow cylinder.

The rotation direction of the support member is set from the free end toward the proximal end in relation to the anti-slip member 18 .

Of course, even if the support member is rotated in such a direction, no slippage will occur between it and the hollow cylinder 10-2 that is being rotated together.

In this example as well, it can be constructed as shown in FIG. 8, or as shown in FIG. 1, in accordance with the first embodiment.

In this manner, by providing the displacement prevention member, even if the hollow cylinder is shaken when nothing is in contact with the cylinder, the position with respect to the support member will not be displaced.

Example 3 (see FIGS. 15 and 16).

This example is characterized in that the outer diameter of the hollow cylinder is greater than or equal to the inner diameter of the support member before assembly.

In the case of Examples 1 and 2, the outer diameter of the hollow cylinder 10 is made smaller than the inner diameter of the support part of the support member, and the developing roller is brought into contact with it, and since the hollow cylinder is elastically deformed, A wide development contact width could be obtained with low contact force.

However, when a wider development contact width is required, the following conditions (1) to (4) are required.

5. ■ Increase the contact pressure. ■ Use a softer material or thinner wall thickness so that the hollow cylinder can more easily deform elastically. (2) Enlarging the inner diameter of the support member to increase the contact area, etc.

Therefore, it is necessary to obtain a wider developer contact width without requiring the conditions (1) to (3) above, and even if the hollow cylinder is shaken when the developing roller is not in contact with the hollow cylinder, the position of the hollow cylinder will be shifted. In this example, we have made sure that this is not the case.

The basic configuration is shown in FIG. 1, FIG. 2, or FIG. 7 above.

Conforms to Figure 8.

In FIGS. 15 and 16, the hollow cylinder 10-3 has an outer diameter of 65ffilI, a wall thickness of 0.15a+m, and a length of 250mm.
A photoreceptor is coated on the outer periphery of an aluminum cylinder, and it can be elastically deformed in the radial direction.

On the other hand, the supporting members 1l-3R and 1l-3L are hollow cylinders 10
The support part of -3 is a stainless steel flange with an inner diameter of 67a+m, and a 1 mm thick rubber is pasted on the part that contacts the hollow cylinder.

In this example, the outer diameter of the hollow cylinder 10-3 is the support member 1l-3.
Since it is larger than the inner diameter of R, 1l-3L, when assembling the hollow cylinder, the hollow cylinder is bent and inserted into the support member.

As a result, as shown in FIG. 15, the portion of the hollow cylinder 10-3 that is in contact with the developing roller is locally deformed into a concave shape while the developing roller is not in contact with it yet, and the amount of deflection is δ=
It was 5 mm.

Fig. 16 shows the state when a developing roller 13 with a length of 200 mm that does not hit the support member even if it bites in with an outer diameter of 20 mm is brought into contact with the developing roller 13 in the axial direction and radially inward with a force of 300 gf. The amount of biting t=about 12a+
m, I was able to get enough contact width for 13 fights.

In the general aspect of this embodiment, as the contact pressure is increased, the static frictional force between the hollow cylinder and the support member tends to gradually decrease as the hollow cylinder deforms.
Under the numerical conditions such as material, dimensions, amount of deflection, etc., as described above, sufficient static frictional force is within the range that acts between the hollow cylinder and the support member, so even during rotation, between the two,
No slipping occurred.

In this example, since the outer diameter of the hollow cylinder before assembly is larger than the inner diameter of the support member, a wider contact width can be obtained with weaker contact pressure than in the case otherwise. Furthermore, even if the hollow cylinder was shaken when nothing was in contact with it, the position of the hollow cylinder did not shift.

Example 4 (see FIGS. 17 to 20).

This example is characterized in that the inner side of the side plate of the support member and the hollow cylindrical support portion of the support member form an obtuse angle.

In each of the above embodiments, an example of a rotary body is shown that includes a hollow cylinder that can be elastically deformed in the radial direction and a support member that surrounds and supports the outer periphery of both ends so as not to restrict the radially inward deformation of the hollow cylinder. However, among these, there are some that cause the hollow cylinder to shift, similar to belt drive.

However, if the shift prevention member is used to prevent shifting from inside the hollow cylinder, the deformation of the hollow cylinder inward in the radial direction will be restrained. Further, if a deviation prevention member is provided at the hollow cylinder or the contact portion of the support member with the hollow cylinder, there is a risk that the smoothness of the elastic deformation of the hollow cylinder will be impaired.

The purpose of this example is to prevent shifting without impairing the smoothness of the elastic deformation of the hollow cylinder.

In FIG. 17, a hollow cylinder 10 is an aluminum cylinder having an outer diameter of 60 mm, a wall thickness of 0.15 mm, and a length of 250 cm coated with a photoreceptor, and is capable of elastic deformation in the radial direction.

The supporting members 1l-4R and 11-female have tapered sides, and the inner diameter of the part that supports the hollow cylinder 10 is 68 mm.
This is a stainless steel flange.

The anti-slip member is made of rubber having a thickness of 1-I+, and is attached to a portion of the inner peripheral surface of the flange of the support member that contacts the hollow cylinder.

18 and 19 are enlarged views of the broken line portion in FIG. 17, and in each example, the inner side of the flange folding plate of the support member and the central cylindrical support portion are in a positional relationship of 120'.

The deviation of the hollow cylinder IO and how it is automatically corrected will be explained with reference to Fig. 19. 6(a) Due to various causes, the hollow cylinder 10 may shift to one side (to the right in this example) as it rotates. (See Figure 19(a)).

(b) Since the inner side plate of the support member 11-female flange and the hollow cylinder support part are in a positional relationship that allows the hollow cylinder to escape, the hollow cylinder 10 is bent without buckling (first
(See Figure 9(b)).

(C) Eventually, when the limit is reached, the hollow cylinder 10 returns to its original position due to the reaction of the deflection (FIG. 19 CG)).

As mentioned above, in this example, the inner side of the flange side plate of the support member and the hollow cylinder support part are in a positional relationship of 120 degrees, but any angle that allows the hollow cylinder to be bent and released without buckling is used. Degrees are also acceptable.

Although there is a problem that the position of the hollow cylinder 10 is difficult to determine, the above-mentioned result can be achieved even if the inside of the support member flange side plate and the hollow cylinder support part are made perpendicular to each other and rounded with a radius R as shown in FIG. You can get similar functionality.

In this way, in this example, the hollow cylinder can be returned to its original position by the reaction of the bending without buckling.

Example 5 (see FIGS. 21 to 23).

In this example, the combination of the hollow cylinder and the support member is similar to the example shown in FIGS. 1 and 2 above.

The different points will be described below.

The hollow cylinder in this example (indicated by reference numeral 10-5 in FIG. 23) has an outer diameter of 60III! +, wall thickness 0.05mm, length 25
It is made of iron (magnetic material) and can be elastically deformed in the radial direction.

The support member is designated by the reference numeral 11-R in FIGS. 21 and 22. A supporting member that pairs with this is also not shown, but it is equivalent to this.

In Figures 21 and 22, the inner diameter of the part that supports the hollow cylinder is a stainless steel flange with an inner diameter of 69++ ua, and the part that contacts the hollow cylinder has a thickness of 2Ila+ and a magnetic flux density of 400.
A Gauss rubber magnet is attached.

FIG. 23 shows such a hollow cylinder 10-5 and support body 11-.
Another rotating body that attempts to obtain a wide and uniform contact width between a rotating body configured by combining R and a hollow cylinder, for example, an outer diameter of 20 mm.
This figure shows the situation when a developing roller 13 with a length of 200 mm is brought into contact with the developing roller 13 parallel to the axis.

If the magnetic flux density of the rubber magnet attached to the flange of support member 1l-5R etc. is O, the contact force is 1.
While the hollow cylinder and the supporting member slipped at 1000 f, when a rubber magnet 30 with a magnetic flux density of 400 Gauss was used, no slipping occurred between the hollow cylinder and the supporting member at a contact force of about 10,100 O. .

5 In this example, a magnetized rubber magnet is attached to the inside of the flange to attract the hollow cylinder, but the invention is not limited to this example. Any method may be used as long as the magnet is magnetized, for example, the support member may be directly magnetized, or a hollow cylinder may be magnetized.

In each of the embodiments described above, the case where the hollow cylinder is a photoreceptor drum has been described, but this example is not limited to this, and can be applied to a rotating body that requires a wide and uniform contact width to lower the contact pressure. A wider contact width can be obtained, and even if the rotating body is shaken when nothing is in contact with the hollow cylinder, the position of the hollow cylinder main body will not shift.

For example, the hollow cylinder 1o in each of the above embodiments is the 24th cylinder.
It can be applied to a fixing roller 20 as shown in the figure. In the figure, reference numeral H indicates a heater, reference numeral 21 indicates a pressure roller, and reference numeral S indicates a sheet to be fixed.

Similarly, it can be applied to a developing roller 22 as shown in FIG. In the figure, reference numeral 23 indicates a hard image carrier, reference numeral 24 indicates a developer replenishment roller, reference numeral 25 indicates a developer, and reference numeral 26 indicates a thin layer forming blade.

Similarly, the invention can also be applied to *X rollers, static elimination rollers, etc. shown with reference numeral 27 in FIG. 26.

Similarly, the present invention can also be applied to the cleaning roller 28 shown in FIG. 27. In the figure, reference numeral 29 indicates a scraping blade.

(Effects of the Invention) According to the present invention, when the same positive outward force is applied in the radial direction, the amount of deformation inward in the radial direction is the same regardless of the position in the axial direction, and the elasticity of the roller to be contacted is without damaging the
It satisfies various conditions such as simple structure, low cost, light weight, and high positioning accuracy in the radial direction.
It is possible to obtain a rotating body that can obtain a wide and uniform contact width with a weak contact pressure without limiting the material of the contact roller.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1, 7, and 9 are exploded perspective views of a rotating body according to the present invention, and FIG. 2 is an assembled perspective view of the rotating body shown in FIG. Figure 3 is a cross-sectional view of the rotating body, Figure 4 is a cross-sectional view of the same rotating body when the rollers are in contact with it, Figures 5 and 6 are explanatory diagrams of the power transmission means, and Figure 8 is the rotating body. An explanatory diagram of the support structure of the body, Figure 1O is a front view of the anti-displacement member, Figures 11 to 16, and 23 are cross-sectional views of the rotating body, Figure 17 is a vertical cross-sectional view of the rotating body, and Figure 18 20 are partial sectional views of the support member, FIG. 21 is a perspective view of the support member, FIG. 22 is a sectional view of the same as above, and FIG. 24 is an explanatory view when the rotating body is applied to the fixing roller. FIG. 25 is an explanatory diagram when the rotating body is applied to a developing roller, and FIG. 26 is an explanatory diagram when the rotating body is applied to a charging roller or the like. FIG. 27 is an explanatory diagram when a rotating body is applied to a cleaning roller, and FIG. 28 is an explanatory diagram of a conventional technique. 10...Hollow cylinder, IIR, ILL, 1l-2R
, 1l-2L. 1l-3R, 1l-3L, 1l-4R, 11-41・
...Supporting member, 18...Slip prevention member. (1 other person) 2 figures JF Party figure figure JL Ki figure θ Jiezu Ki figure (Snake) (Small) 4 Fig. % (5 Fig. G Fig. 7 Fig. qi (ε Fig. Z Fig. 4 (a) (stand) (C) Fig. ?? Fig. 0 Fig. 24 Fig. 5 Qi 6 Figure % 7 Figure % 2ε Figure (a) <b>

Claims (1)

[Claims] 1. A hollow cylinder that can be elastically deformed in the radial direction, and a support member that surrounds and supports the outer periphery of both ends of the hollow cylinder so as not to restrict the radially inward deformation of the hollow cylinder. A rotating body characterized by comprising: 2. The rotating body according to claim 1, wherein when the outer diameter of the hollow cylinder is smaller than the inner diameter of the support portion of the support member, the support member is provided with a member for preventing displacement of the hollow cylindrical body. 3. The rotating body according to claim 1, wherein the outer diameter of the hollow cylinder is larger than the inner diameter of the support portion of the support member. 4. The rotating body according to any one of claims 1 to 3, wherein the inner side of the side plate of the support member and the hollow cylindrical support portion of the support member form an obtuse angle. 5. The rotating body according to claim 1, wherein magnetic force is used as a driving force transmission means from the support member to the hollow cylindrical body.