JP3470992B2 - Image carrier, method of manufacturing the same, and image forming apparatus using the same - 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 carrier, a method for manufacturing the same, and an image forming apparatus using the same. More specifically, a copying machine using electrophotography,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image image carrier having an insert fixed inside a cylindrical body used for an image forming apparatus such as a printer, a facsimile machine or a complex machine thereof, a manufacturing method thereof, and an image forming apparatus using the same.

[0002]

2. Description of the Related Art In an electrophotographic copying machine or the like using an electrophotographic system, an image is formed by an image forming process including a step of contacting a charging member to which a voltage is applied with an image carrier as a photoconductor to charge the image carrier. However, a technique for suppressing the generation of noise due to the vibration of the image carrier at the time of charging by press-fitting and holding the weight member through the elastic member inside the cylindrical body forming the image carrier Is publicly known (see JP-A-5-35166). However, in such an image bearing member, the weight member is provided with a JIS hardness of 20 degrees to 7 degrees inside the hollow cylindrical image bearing member.
Although the press-fitting operation is difficult through the 0-degree elastic member, this press-fitting work is difficult, and particularly in the case of an image carrier made of a thin material, the image carrier swells due to the internal pressure of the press-fitting work. When such an image carrier is used in an image forming apparatus, it is difficult to obtain a high quality, uniform formed image at high cost. Furthermore, after applying an adhesive agent to the inner surface of the image carrier in advance, or applying an adhesive agent to the outer surface of the filling of the rigid or elastic member to be filled inside the cylindrical image carrier, the image carrier There is also known a technique of suppressing noise generated by vibration of an image carrier by inserting and adhering a filler into the inside of the sheet (see Japanese Patent Application Laid-Open No. 5-35167). Alternatively, a magnet roll is also known in which a pair of support shafts are inserted from both sides of the through hole of the cylindrical magnet, and an adhesive summary is formed and fixed on the outer periphery of the insertion portion of the support shaft (actual flat plate 2). -48971).

However, the image carrier and the manufacturing method thereof and the image forming apparatus using the same are shown in FIG.
As shown in the related art, the adhesive 103 is applied in advance to the inner peripheral surface 101a of the cylindrical body 101 forming the image carrier 110, or the outer peripheral surface 102a of the filler 102 filled inside the image carrier 110. To the adhesive 103 beforehand
Is applied as shown in the drawing, and then the filler 102 is inserted into the image carrier 110. However, this inserting operation is difficult, and the extra adhesive 103 is added when the insert is inserted or when the finished product is used. During use, there is a problem that the filler 102 adheres to the image carrier 110 and the like outside the both axial end surfaces to make it defective. Further, the filler 10 is provided inside the image carrier 110.
It is also difficult to press-fit 2 in the direction of the arrow shown in the figure via the adhesive 103. Particularly, the image carrier 110 made of a thin material swells due to the internal pressure of the work in which the image carrier 110 is press-fitted. Even when such an image carrier 110 is used in an image forming apparatus, it is difficult to obtain a high quality formed image because of a high cost and a non-uniform image.
Therefore, in such a conventional image carrier, the manufacturing method thereof and the image forming apparatus using the same, the work of inserting and fixing the filler for suppressing the vibration of the image carrier into the image carrier is fixed. Is difficult, especially in an image carrier manufactured with a thin material, the image carrier swells due to the internal pressure of the press-fitting work, and when such an image carrier is used in an image forming apparatus, the cost is high, There has been a problem that it is difficult to obtain a high quality formed image due to a non-uniform image.

[0004]

The above-mentioned conventional image carrier, its manufacturing method, and the image forming apparatus using the same are previously attached to the inside of the image carrier in order to suppress the vibration of the image carrier. It is difficult to insert and fix the insert after applying the agent.In particular, the image carrier manufactured with a thin material is deformed by the swelling due to the internal pressure of the work of press-fitting the image carrier. Alternatively, when such an image bearing member is used in an image forming apparatus, there is a problem that it is difficult to obtain a high quality formed image because of a high cost and a non-uniform image. Therefore, the object of the present invention is to
This is to solve such a problem. That is, anyone can insert the vibration suppressing insert into the image carrier by a simple operation that can be performed and can be adhesively fixed. Even when the image carrier is made of a thin material, It is possible to prevent deformation such as bulging, and by using such an image carrier, it is possible to obtain a uniform image at a low cost and to obtain a high quality formed image, and also to generate noise during operation. Provided are an image forming apparatus capable of suppressing an image formation and forming an image in a comfortable environment, an image carrier, and a manufacturing method thereof.

[0005]

In order to achieve the above object, the invention of claim 1 is an image carrier for use in an image forming apparatus, which is a hollow cylinder for forming an image on the outer peripheral surface, What has a cylindrical insert body to be inserted into the inside of the cylinder body and an adhesive agent for fixing the inner peripheral surface of the cylinder body and the outer peripheral surface of the insert body, wherein the adhesive agent is formed inside the insert body. It
The adhesive is pre-applied to the open space and this adhesive
Of the insert body against the cylindrical body by reaching the inner peripheral surface of
And the space formed inside the insert is
Axial hole that extends axially inward from one axial end of the insert
And extending from the proper position of the axial hole in the outer radial direction to the outside of the insert.
And a radial hole opened on the peripheral surface . According to a second aspect of the present invention, in the method of manufacturing an image carrier used in an image forming apparatus, a cylindrical body is formed by inserting an insertion body from an upper opening of a hollow cylindrical body whose lower opening is supported by a supporting member in an upright state. A supporting step of supporting the insert body by an upper surface of a supporting member located at a lower portion, and an adhesive is injected into a space portion extending inward in the axial direction from an upper end surface of the insert body, and the inner circumference of the cylindrical body is inserted through the space portion. And an outer circumference of the insert body, and an injecting step of spreading an adhesive agent between the insert body and the outer periphery of the insert body, and an adhering step of adhering the cylindrical body and the insert body with the adhesive agent. According to a third aspect of the present invention, in the method of manufacturing an image bearing member according to the second aspect, after the adhesive is injected into the space, either the cylindrical body or the insert body is axially moved back and forth to bond the adhesive. The feature is that the adhesive surface of the agent is widened. The invention of claim 4 relates to claim 1
The image carrier according to claim 2 or the image carrier produced by the method according to claim 2 or 3, a charging unit that charges the image carrier, and the image carrier charged by the charging unit are exposed. Exposure means for forming an electrostatic latent image by
It is characterized by comprising developing means for visualizing the electrostatic latent image formed by the exposing means. According to a fifth aspect of the present invention, in the image forming apparatus according to the fourth aspect, the charging unit is a charging roller that contacts and charges the cylindrical body.

[0006]

According to the first aspect of the present invention, the insert is adhered to the inside of the cylindrical body by a simple insertion and adhesion work without the adhesive adhering to the end face of the insert or the unnecessary portion such as the image carrier. By fixing it, and preventing deformation such as bulging even when it is manufactured with a thin material, by using this in an image forming apparatus, it is possible to obtain a uniform image of high quality at low cost. It is possible to suppress the generation of noise during charging operation and form an image in a comfortable environment. In addition, a hole for injecting adhesive is provided inside one cylinder.
As a space, and inject the adhesive into this space.
This allows the adhesive to be applied to the outer peripheral surface of the insert through the space.
Since it is designed to be unfolded, a simple insertion work
The above effect can be achieved.

According to the second aspect , the work of inserting and fixing one insert body in the cylindrical body can be realized by a simple process, so that the productivity can be improved and the cost can be reduced. In the third aspect , after the adhesive is injected into the space, either the cylindrical body or the insertion body is axially moved back and forth to widen the adhesive surface of the adhesive. The expansion range can be further expanded. According to the present invention, since the image carrier is applied to the image forming apparatus, it is possible not only to obtain a high quality and uniform formed image at low cost, but also to suppress noise during charging operation and to be comfortable. An image forming apparatus that forms an image in an environment can be provided. According to the present invention, even if a charging roller is used as the charging means, as long as this image carrier is used, the generation of noise during charging operation by the charging roller is suppressed and an image is formed in a comfortable environment. A device can be provided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional perspective view showing the structure of an image carrier according to one embodiment of the present invention, and FIG. 2 is a front view of the main parts of an image forming apparatus using this image carrier, and the image carrier of the present invention. Reference numeral 10 is used for an image forming process such as charging, exposure, development, and transfer of an image forming apparatus such as an electrophotographic copying machine using an electrophotographic system, and a cylindrical body 1 for forming an image on an outer peripheral surface. And the inner peripheral surface 1a of the cylindrical body 1 as a weight for suppressing the generation of noise due to vibration during charging.
A cylindrical insert body 2 to be inserted therein, an adhesive 3 for adhesively fixing the inner peripheral surface of the cylinder body 1 and the outer peripheral surface of the insert body 2, and a space portion (adhesive) formed inside the insert body 2 Agent holding / injecting space 4), and the adhesive 3 is developed so as to reach the inner peripheral surface 1a of the cylindrical body 1 from the space portion 4 formed inside the insert body 2. The cylindrical body 1 is made of aluminum, for example, having an outer diameter of 30 mm and a length of 340 mm, and has a thin wall thickness (0.75 mm).
(mm) hollow cylindrical body is coated with a conductive layer or a photosensitive layer on the outer peripheral surface thereof and is rotatably supported to be used in an image forming apparatus. The insert 2 has, for example, a length (L) 6
Aluminum or brass material processed into a cylindrical shape of 0 mm, which is appropriately selected in consideration of weight, cost and the like. The insert 2 of FIG. 1 is composed of two short split inserts 2a.
_Since it consists of ₁ and 2a ₂ , the axial length of each split insert is about 30 mm. As the adhesive 3, an adhesive having a short time required for curing, a low viscosity and a high permeability is suitable, and an anaerobic adhesive or the like is used. As the anaerobic adhesive, 130 manufactured by ThreeBond Co., Ltd., which is commercially available, is used.
3N (trade name), 290 (trade name) manufactured by Loctite Co., Ltd. can be obtained and used.

In the first embodiment of the present invention, the insert 2 is composed of a plurality (two in this case) of split inserts 2a ₁ and 2a _2, and the space portion 4 of this embodiment has two inserts. A space portion 4a formed between the end surfaces facing each other when the body is inserted into the cylindrical body, and the adhesive 3 is injected into the space portion 4a,
The image carrier 10 is formed by bonding and fixing the cylindrical body 1 and the insert body 2. The electrostatic latent image formed by contact charging the image carrier 10 with the charging roller 11a of the charging device 11 of the image forming apparatus and exposing the charged image carrier 10 with the exposure device 12 is formed. After being visualized by the developing means 13, the visualized toner image is transferred onto the recording paper (P) by the transfer means 14 and fixed by the fixing means 15 to form an image.

FIG. 3 is a perspective view of an image carrier according to the second embodiment of the present invention, FIG. 4 is a perspective view of an insert member which constitutes this image carrier, and FIG. 5 is image formation using this image carrier. It is a front view of the principal part of an apparatus. In the image carrier of the second embodiment, the space portion 4 formed in the single insert body 2 extends axially inward from the center of _one end face 2b ₁ of the insert body 2 and terminates midway. And an axial hole 4b, and one or a plurality of radial holes 4c that extend radially from the proper position of the axial hole 4b and open at the outer peripheral surface. The length and diameter of the axial hole 4b, the position, the number, and the angle of the radial hole 4c can be appropriately selected and are not limited to those shown in the drawings. In this embodiment, the adhesive 3 is injected into the axial hole 4b and exudes between the cylindrical body 1 and the insert body 2 through the radial hole 4c to fix them. The image carrier 10 thus obtained is contact-charged by the charging roller 11a of the charging means 11 of the image forming apparatus, and the charged image carrier 10 is exposed by the exposing means 12 to form an electrostatic charge. After the latent image is visualized by the developing means 13, the visualized toner image is transferred onto the recording paper (P) by the transfer means 14 and fixed by the fixing means 15 to form an image. Has become.

FIGS. 6 (a) to 6 (d) are views showing a procedure for manufacturing the image carrier shown in FIG. 1. In this manufacturing method, the image is formed on the central protrusion of the supporting member 5 having a convex shape. The process is started by placing one of the divided inserts 2a ₁ and covering the cylindrical insert 2a ₁ with the holding member 16 interposed therebetween. Alternatively, the cylindrical body 1 may be placed on the support member 5 and then the split insert 2a ₁ may be inserted therein. That is, in the supporting step shown in FIG. 6 (a), one of the split inserts 2a _{1 is} inserted into the inner peripheral surface 1a of the cylindrical body 1 which is supported by the holding member 16 in an upright state and has the support member 5 arranged at the bottom. Is inserted from above and placed on the support member 5. In the injection step (b), the adhesive 3 is injected (placed) by the dispenser 20 on the upper surface 2b _{1 of one} of the split inserts 2a ₁ supported on the support member 5 while standing upright in the cylindrical body 1. To do. In the pressing step (c), the split insert 2a ₁ is injected in the injection step.
After injecting the adhesive 3 on the upper surface of the
The other split insert 2a ₂ is inserted in the direction of arrow A in the drawing a, and the adhesive 3 in the space 4a formed by the end faces 2b ₁ and 2b _{2 of} both split inserts is pressed by not shown. By pressing with a means in the direction of the arrow A shown in the figure, the adhesive between both end faces is spread and extruded to the outer diameter direction and the outer peripheral face. In the bonding step (d), the adhesive thus developed is bonded and fixed.

FIGS. 7A, 7B and 7C are views showing a method of manufacturing the image carrier of FIGS. In the supporting step shown in (a), the insert 1 of FIG. 4 is placed on the upper surface of the supporting member located inside the cylindrical body while the cylindrical body 1 is erected and supported in an upright state on the bottom projecting surface of the supporting member 5. To do. At this time, the open end of the axial hole 4b faces upward. Subsequently, in the injection step (b), the dispenser 20 is used to perform the axial hole 4b.
An adhesive is injected into the inside, and is expanded in the outer diameter direction through the radial hole 4c, and the inner peripheral surface 1a of the cylindrical body 1 and the outer peripheral surface 2 of the insert 2 are inserted.
The adhesive 3 is permeated into the gap formed by c to widen the adhesive surface. In the bonding step (c), the cylinder 1 and the insert 2 are bonded and fixed with the adhesive 3. This dispenser presses the adhesive with a constant pressure, and the dispenser may have a hole at the tip as shown in FIG. 6 (b), but it is also shown in FIG. 7 (b). Like the tip is sealed,
In addition, it is preferable to use a hole in which a hole communicating with each radial hole 4c is formed at a proper position on the outer peripheral surface. With this configuration, the adhesive can flow in the outer diameter direction from each radial hole 4c without waste.

FIG. 8 shows the final bonding step in the manufacturing process of FIG.
The step of spreading the adhesive, which is performed at the same time as (d) or after (d), shows that the adhesive 3 is injected into the space 4a formed between the end faces of the two split inserts 2a ₁ and 2ab. Then, the inner peripheral surface 1a of the cylindrical body 1 and the outer peripheral surface 2 of the insert 2 are pressed by pressing.
After the adhesive 3 is infiltrated into the gap formed between the cylindrical body 1 and the cylindrical body 1, the insert 2 is fixed by the support member 5.
Is sandwiched by the holding member 16 and moved up and down in the direction of the arrow B shown in the drawing, whereby the penetration of the adhesive 3 is promoted and the adhesive surface is enlarged. Alternatively, after the adhesive 3 is injected, the supporting member 5 is moved up and down by the rotation of the eccentric cam 17 which rotates in the direction of the arrow C shown by the drive source (not shown) while fixing the cylindrical body 1 with the holding member 16. By moving the insert 2 up and down with respect to the cylindrical body, the penetration of the adhesive 3 is promoted and the adhesive surface is enlarged.

FIG. 9 shows the final bonding step in the manufacturing process of FIG.
The step of developing the adhesive, which is performed at the same time as (c) or after (c), shows that the adhesive 3 is injected into the axial hole 4b.
After the adhesive 3 has penetrated into the gap formed between the inner peripheral surface 1a of the cylindrical body 1 and the outer peripheral surface 2c of the insert 2, the insert 2
While fixing the cylindrical body 1 on the supporting member 5,
By reciprocating in the direction of arrow B shown in the figure, the penetration of the adhesive 3 is promoted and the adhesive surface is enlarged. Or
While the cylindrical body 1 is being fixed by the holding member 16, the support member 5 is moved in the up-down longitudinal direction by the rotation of the eccentric cam 17 which is rotated in the direction of the arrow C shown by the drive source (not shown), whereby the insert body is moved up and down. The adhesive 3 is moved to promote the penetration of the adhesive 3 to widen the adhesive surface.

FIG. 10 shows the final bonding step in the manufacturing process of FIG.
Another example of the adhesive developing step that is performed at the same time as (d) or after (d) is shown, in which the adhesive 3 is injected into the space 4a and then pressed, and Circumferential surface 1a and insert 2
After the adhesive 3 is infiltrated into the gap formed between the outer peripheral surface 2c of (2a ₁ , 2ab), the cylindrical body 1 is illustrated by the holding member 16 while fixing the insert 2 with the support member 5. By reciprocally rotating (or rotating) around the central axis of the cylindrical shape in the direction of arrow D, the penetration of the adhesive 3 is promoted and the adhesive surface is expanded.

FIG. 11 shows the final bonding step in the manufacturing process of FIG.
The other example of the spreading process of the adhesive which is performed at the same time as (c) or after (c) is shown. The adhesive 3 is injected into the axial hole 4b, and the inner peripheral surface 1a of the cylindrical body 1 is shown. And the outer peripheral surface 2c of the insert 2
After allowing the adhesive 3 to penetrate into the gap formed between
While the insert body 2 is being fixed by the support member 5, the cylindrical body 1 is reciprocally rotated (rotated) about the central axis of the cylindrical shape in the direction of the arrow D shown by the holding member 16 to promote the penetration of the adhesive 3. And spread the adhesive surface.

12 and 13 are a longitudinal sectional view and an XX sectional view showing an example of a mechanism for carrying out the step of developing the adhesive shown in FIG. The adhesive 3 is injected into the space 4a formed between the end faces and then pressed, so that the adhesive 3 is applied to the gap formed between the inner peripheral surface 1a of the cylindrical body 1 and the outer peripheral surface 2c of the insert 2. After fixing the cylindrical body 1 to the holding member 16, the rotational driving force of the reversibly rotating motor 18 is transmitted to the supporting member 5 supporting the insert body 2 through the gear train 19, and the arrow shown in the figure By reciprocally rotating in the E direction around the central axis of the cylindrical shape, the penetration of the adhesive 3 is promoted and the adhesive surface is widened.

14 and 15 are a longitudinal sectional view and an YY sectional view showing an example of a mechanism for carrying out the developing step shown in FIG. 11, in which the adhesive 3 is injected into the axial hole 4b, A motor that reversibly rotates while fixing the cylindrical body 1 to the holding member 16 after the adhesive 3 has penetrated into the gap formed between the inner peripheral surface 1a of the cylindrical body 1 and the outer peripheral surface 2c of the insert body 2. The rotational driving force of 18 is transmitted to the support member 5 that supports the insert body 2 via the gear train 19 and is rotated about the central axis of the cylindrical shape in the direction of arrow E shown in the figure, so that the adhesive 3 permeates. Is promoted to spread the adhesive surface. The number of split inserts is not limited to two, and may be three or more.

[0019]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it is possible to insert the vibration suppressing insert into the inside of the image carrier and adhere and fix it by a simple operation that anyone can do, especially meat. Even an image carrier manufactured with a thin material can prevent deformation such as bulge during insertion, and by using such an image carrier, a uniform image can be obtained at low cost. To provide an image forming apparatus, an image carrier, and a method of manufacturing the same, which can not only obtain a formed image of high quality but also suppress the generation of noise during operation to form an image in a comfortable environment. You can That is,
According to the invention of claim 1, an image carrier used in an image forming apparatus, wherein a hollow cylindrical body for forming an image on an outer peripheral surface, and a cylindrical insert body inserted into the cylindrical body, In what has an adhesive that fixes the inner peripheral surface of the cylindrical body and the outer peripheral surface of the insert, since the adhesive reaches the inner peripheral surface of the cylindrical body from the space formed inside the insert. By simple insertion and adhesion work, the insert is adhered and fixed inside the cylindrical body without the adhesive adhering to the end face of the insert or the unnecessary part such as the image carrier, and especially the thin material Prevents deformation such as bulges even when it is manufactured by, and by using this in an image forming apparatus, it is possible to obtain a high-quality uniform formed image at low cost, as well as during charging operation. It is possible to suppress the generation of noise and form images in a comfortable environment. . Especially glued inside one cylinder
Space part (axial hole, radial hole) as a hole for agent injection
The space is provided by injecting an adhesive into this space.
So that the adhesive is spread on the outer peripheral surface of the insert through the
Therefore, the above effects can be achieved by a simple insertion work.
It

In the invention of claim 2, the image of claim 1
Supports the image carrier with the lower opening upright by the support member
Insert the insert through the top opening of the hollow cylinder
By the upper surface of the support member located in the lower part of the cylinder
A supporting step for supporting the insert and whether the upper end surface of the insert is
Injection to inject adhesive into the space that extends axially inward
Step, and connect the cylinder and the insert with the adhesive.
One insert because it was manufactured by the bonding process to wear
Realize the work of inserting and fixing the inside of the cylinder in a simple process
Therefore, productivity can be improved and cost can be reduced.
You can In the invention of claim 3, in the space portion,
After injecting the adhesive, either the cylinder or the insert
By advancing and retracting one side in the axial direction, the adhesive surface of the adhesive is
Since it has been expanded, the expansion range of the adhesive is further expanded.
be able to. In claim 4, the image carrier is
Since it is applied to image forming equipment, it is low cost and high quality uniform.
It is possible to obtain not only a formed image but also during charging operation.
Images that suppress noise and form images in a comfortable environment
A forming device can be provided.

In claim 5, the charging means is a charging means.
Even if a roller is used, as long as this image carrier is used
Suppresses the generation of noise during charging operation by the charging roller.
Provide an image forming device that forms an image in a comfortable environment
be able to.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an image carrier according to an exemplary embodiment of the present invention.

FIG. 2 is a diagram illustrating a main part of an image forming apparatus using the image carrier of FIG.

FIG. 3 is a perspective view illustrating an image carrier according to another embodiment of the present invention.

4 is a perspective view of an insert body used in the image carrier of FIG.

FIG. 5 is a diagram illustrating a main part of an image forming apparatus using the image carrier of FIG.

6A to 6D are views for explaining a method of manufacturing the image carrier of FIG.

7A to 7C are views illustrating a method of manufacturing the image carrier of FIG.

FIG. 8 is a diagram showing a step that follows the manufacturing method in FIG.

FIG. 9 is a diagram showing a step that follows the manufacturing method in FIG.

FIG. 10 is a diagram showing another step following the manufacturing method in FIG.

FIG. 11 is a diagram showing another step following the manufacturing method in FIG. 7.

12 is a mechanism diagram for realizing the manufacturing method of FIG.

13 is a sectional view taken along line XX of FIG.

14 is a mechanism diagram for realizing the manufacturing method of FIG.

15 is a sectional view taken along line YY of FIG.

FIG. 16 is a diagram illustrating a conventional image carrier.

[Description of Reference Signs] 1 cylindrical body, 1a inner peripheral surface, 2 insert body, 2a ₁ split insert body, 2a ₂ split insert body, 2b side surface, 2b ₁ one end surface, 2b ₂ other end surface, 2c outer peripheral surface, 3 Adhesive, 4 Space portion, 4a Space portion, 4b Space portion (axial hole), 4c Radial hole, 5 Support member, 10 Image carrier, 11 Charging means, 11a Charging roller, 12 Exposure means, 13 Developing means, 14 transfer means, 15 fixing means, 16 member, 17 eccentric cam, 18 motor, 19
Gear train, 20 dispenser, 101 cylinder,
101a inner peripheral surface, 102 filler, 102a outer peripheral surface, 103 adhesive, 110 image carrier

Continuation of front page (56) Reference JP-A-9-26728 (JP, A) JP-A-3-105348 (JP, A) JP-A-4-84182 (JP, A) JP-A-2-302482 (JP , A) Actually open 2-15941 (JP, U) Actually open 51-83563 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03G 21/00 350 C09J 5/00

Claims (5)

(57) [Claims] 1. An image carrier used in an image forming apparatus, comprising: a hollow cylindrical body for forming an image on an outer peripheral surface; a cylindrical insert body inserted into the cylindrical body; In the one having an adhesive for fixing the peripheral surface and the outer peripheral surface of the insert, the adhesive is a space formed inside the insert.
The adhesive is pre-applied to the inner surface of the cylinder, and this adhesive
The insert body against the cylinder by reaching
The space formed inside the insert is the axial direction of the insert.
An axial hole extending inward in the axial direction from one end face, and the axial direction
Extend from the proper place of the hole in the outer diameter direction and open on the outer peripheral surface of the insert.
And an image bearing member comprising a radial hole . 2. A method for manufacturing an image carrier used in an image forming apparatus, wherein a lower opening is formed in a lower part of a cylindrical body by inserting an insert body from an upper opening of a hollow cylindrical body which is supported upright by a supporting member. A supporting step of supporting the insert body by the upper surface of the supporting member positioned, and an adhesive is injected into a space portion extending axially inward from the upper end surface of the insert body and inserted into the inner circumference of the cylinder through the space portion. A method for manufacturing an image carrier, comprising: an injection step of spreading an adhesive between the outer circumference of the body and an adhering step of adhering the cylindrical body and the insert with the adhesive. 3. The method for manufacturing an image carrier according to claim 2, wherein after the adhesive is injected into the space, either the cylindrical body or the insert body is moved back and forth in the axial direction to remove the adhesive. A method for manufacturing an image carrier, wherein the adhesive surface is widened. 4. An image carrier according to claim 1, or an image carrier manufactured by the method according to claim 2 or 3,
Charging means for charging the image carrier, exposing means for exposing the image carrier charged by the charging means to form an electrostatic latent image, and an electrostatic latent image formed by the exposing means. An image forming apparatus comprising: a developing unit that visualizes the image. 5. The image forming apparatus according to claim 4,
The image forming apparatus, wherein the charging means is a charging roller that contacts and charges the cylindrical body.