KR100601185B1 - Image creating apparatus of image recorder of electronic photography type - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus of an electrophotographic image recorder, wherein each side of the toner carrying member 22 having the developing device 20 and the image carrying member 26 having the latent image forming machine 24 are in contact with each other. In the image forming apparatus of an electrophotographic image recorder in which the latent image forming unit 24 and the developing unit 20 are brought into contact with each other in a state, the toner bearing member 22 and the image bearing member 26 are separated. The hook 30 is formed on the top surface of the toner carrying member 22, and the hook 32 is formed on the top of the image carrying member 26 so that the hook 30 is detachably coupled thereto. It features. Therefore, the structure in which the toner supporting member and the image supporting member are detachably coupled to facilitate the joining operation so as to replace only the toner supporting member that needs to be replaced at any time, thereby reducing the cost burden of the user and reducing the number of parts. This improves work efficiency, increases productivity, and reduces manufacturing costs.

Image forming apparatus, hook, hook holder, bundle, recess of electrophotographic image recorder

Description

Image creating apparatus of image recorder of electronic photography type recorder

1 is a schematic diagram showing an image forming apparatus of an electrophotographic image recorder according to the prior art.

2 is a perspective view showing an image forming apparatus of an electrophotographic image recorder according to the present invention.

3 is an exploded perspective view showing an image forming apparatus of an electrophotographic image recorder according to the present invention.

4 is a schematic side view showing a state in which the image forming apparatus of the electrophotographic image recorder according to the present invention is coupled.

5 is a schematic cross-sectional view showing a state in which the image forming apparatus of the electrophotographic image recorder according to the present invention is coupled.

** Description of the symbols for the main parts of the drawings **

10: latent image forming machine 12: developing machine

14: hinge axis 16: image bearing member

18: toner support member 20: developer

22: toner supporting member 24: latent image forming machine

26: image bearing member 28: toner supply roller

30: hook 30a: bundle

32: hook 32a: concave

34: cleaning member 36: charging member

38 housing 40 spring

L: Tangential

The present invention relates to an image forming apparatus of an electrophotographic image recorder, and more particularly, to an image forming apparatus of an electrophotographic image recorder in which the toner bearing member and the image bearing member can be easily combined and separated.

The prior art image forming apparatus (process cartridge) is an integral type in which an image bearing member and a toner carrier are connected by a hinge pin or the like. In this method, the image bearing member and the toner carrier are connected and operated by a hinge and a spring, so that even pressure is applied. And a proper nip to keep the resulting image appear uniform.

In the image forming apparatus, a constant voltage is applied by a charging member surrounding the latent image forming apparatus, and image data of the exposure apparatus is received at the charging portion, and an image is formed on the received data by moving the toner of the developing member. The toner moves to the paper through the transfer of the transfer member together with the transfer of the.

The transferred paper passes through a fixing member and an image is formed. Here, a series of processes such as charging, exposure, development, etc. are performed in a processor cartridge which is one member.

As shown in FIG. 1, the latent image forming machine 10 and the developer 12 make the image bearing member 16 and the toner carrier 18 integral with each other by using pins and other members with respect to the hinge shaft 14. (Not shown) is made of a pressing structure to pull each other.

However, in recent years, the process cartridge has a variety of problems, such as damage to the image bearing member due to the burden on the user due to the integrated one, difficult removal of the cartridge.

First of all, the process cartridge is integrated so that the image bearing member must be disposed together when the used toner carrier member is disposed. Therefore, the burden on the user is large. Moreover, the process cartridge cannot be assembled by a general consumer, and is required for assembly to the main body. As the use of other members such as guides and screws of separate members is increased, as a result, the manufacturing price increases, and additional assembly jig and process water are added in assembling the pins and other members for assembling the image bearing member and the toner carrier member. This results in a significant drop in assembly and productivity overall.

The present invention has been made to solve this problem, it is easy to combine and separate the image bearing member and the toner carrier member, so that the image bearing member and the toner carrier member in the coupled state to have a coupling structure to rotate accurately to each other Therefore, only the toner carrying member can be replaced and disposed of with consumables, which reduces the burden on the user, and facilitates the joining operation, and reduces the burden on the user and reduces the manufacturing cost by reducing the number of parts. It is an object of the present invention to provide an image forming apparatus of a photographic image recorder.

Thus, the image forming apparatus of the electrophotographic image recorder according to the present invention for achieving the above object has a latent image forming machine and a toner bearing member having a developing device, and one side surface of each of the image bearing members having a latent image forming apparatus in contact with each other. An image forming apparatus of an electrophotographic image recorder coupled to each other by a developing device, wherein the toner supporting member and the image supporting member are separable from each other, and a hook is formed on an upper surface of the toner supporting member. The hook receiving member is detachably coupled to the upper surface of the image bearing member.

Further, in the image forming apparatus of the electrophotographic image recorder according to the present invention, the extension end of the hook of the toner bearing member is bent toward the toner bearing member, and the hook of the image bearing member corresponding thereto is extended. Is bent toward the image bearing member to form a recess.

In addition, in the image forming apparatus of the electrophotographic image recorder according to the present invention, it is preferable that the bundle extension end portion of the toner support member is formed so as to be closely attached to the hook recess of the image support member.

Further, in the image forming apparatus of the electrophotographic image recorder according to the present invention, the hooks of the toner support members are formed at both ends of the upper surface of the toner support member, respectively, and the hooks of the image support members corresponding thereto are supported. It is preferable to form each in the upper end both ends of a member.

Further, in the image forming apparatus of the electrophotographic image recorder according to the present invention, the engaging position of the hook of the toner bearing member and the hook of the image bearing member is a tangent between the developer of the toner bearing member and the latent image forming machine of the image bearing member. It is preferable to be located at a point within the range of 10 ° to 40 ° rotated to the image bearing member on the basis.

In addition, the image forming apparatus of the electrophotographic image recorder of the present invention allows the latent image forming machine and the developer to come into contact with each other while the toner supporting member having the developing device and each side of the image supporting member having the latent image forming member are in contact with each other. In the image forming apparatus of an electrophotographic image recorder coupled, the toner supporting member and the image supporting member are separated, and a hook extending from the upper surface of the image supporting member to the toner supporting member is formed, and the corresponding toner supporting member The hook is characterized in that the hook is formed on the upper surface of the hook is detachably coupled.

In addition, in the image forming apparatus of the electrophotographic image recorder according to the present invention, it is preferable that a spring provided on one side of the housing is supported at the rear end of the toner support member for supporting and pressing the toner support member.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 2 to 5, an image forming apparatus of an electrophotographic image recorder according to the present invention includes a toner supporting member 22 having a developing device 20 and an image supporting member 26 having a latent image forming machine 24. The latent image forming machine 24 and the developing device 20 are in contact with each other in a state in which one side surface of each of the lateral sides contact each other, thereby making it easy to engage and separate.

The toner support member 22 has a rectangular box shape, and includes a developer 20 for forming an image therein and a toner supply roller 28, and a hook extending from the top surface to the image support member 26. 30) is formed.

In this case, the hook 30 of the toner support member 22 extends from an upper surface of one end portion to be interviewed with the image support member 26, and its extended end is bent in a depression shape toward the toner support member 22. At the extended end of the hook 30, a cylindrical bundle 30a is formed in close contact with the hook 32 recessed portion 32a of the image bearing member 26.

The hooks 30 of the toner support member 22 are formed at both ends of the upper surface of the toner support member 22, respectively.

The image bearing member 26 has a rectangular box shape coupled to the toner carrier member 22, and includes a latent image forming machine 24 such as an electrophotographic photosensitive drum 24, a cleaning member 34, a charging member 36, and the like. Is formed, and the hook 32 is formed so that the hook 30 of the toner support member 22 is detachably connected to the upper surface.

The hook 32 of the image bearing member 26 has an extended end thereof bent toward the image bearing member 26 in the shape of a tracer a to form a concave portion 32a. Corresponding to the hook 30, the upper ends of the image bearing member 26 are respectively provided.

Then, the hook 30 of the toner support member 22 and the hook 32 of the image support member 26 are the toner in a state in which the toner support member 22 and the image support member 26 are coupled to each other. Within the range of 10 ° to 40 ° rotation to the image bearing member 26 with respect to the tangent of the developing device 20 of the supporting member 22 and the outer peripheral surface of the latent image forming member 24 of the image supporting member 26. Preferably it is intended to be joined at a 20 ° point. At this time, the rotation torque value of the developing device 20 due to the rotation of the latent image forming machine 24 is zero (0).

By this combination, the toner carrying member 22 presses the image carrying member 26 by its own load, and as a result, the rotational force of the latent image forming machine 24 is accurately transmitted to the developing unit 20, and at the same time, the toner carrying member The developing unit 20 of (22) presses the latent image forming unit 24 of the image bearing member 26 to form a constant nip.

Then, one end of the toner supporting member 22 is fixed to the housing 38 of the image recording apparatus so as to support the toner supporting member 22, and the other end thereof is located after the toner supporting member 22. A spring 40 in close contact with the end face is installed.

In addition, the spring 40 reduces the load of the toner support member 22 according to the consumption of the toner, and thus the toner support member 22 is moved to the image bearing member 26 in correspondence to the pressure applied to the latent image forming machine 24 being weakened. It also serves to pressurize with).

In other words, when the spring 40 is pressed against the toner carrying member 22 and the load of the toner carrying member 22 gradually decreases, the spring 40 is applied to the toner carrying member 22 as much as this load decreases. The elastic repulsive force of 40 is transmitted to maintain the pressing force applied to the latent image forming machine 24 of the image bearing member 26 by the developing device 20 of the toner bearing member 22.

The image forming apparatus of the electrophotographic image recorder of the present invention according to the above configuration, in order to couple the toner supporting member 22 and the image supporting member 26 separated from each other, first, the hook of the toner supporting member 22 ( 30 is inserted into the hook 32 of the image bearing member 26, and then the other end thereof is rotated downward, the toner bearing member 22 is rotated by its own load so as to burn the toner bearing member 22 with the image. The supporting member 26 is in contact with each other while the hook 30 of the upper end is completed by the hook receiving 32 so that the outer peripheral surface of the latent image forming machine 24 and the developing unit 20 of the lower end is in contact with each other.

At this time, the developing device 20 of the toner supporting member 22 pressurizes the latent image forming machine 24 of the image supporting member 26 by the self-load of the toner supporting member 22 and the repulsive force of the spring 40.

On the other hand, the bundle portion (30a) of the hook 30 is coupled to the concave portion (32a) of the hook receiving 32 in a tightly filled shape so that they are firmly coupled.

In addition, the width and the pressing force between the developer 20 and the latent image forming machine 24 are uniformly maintained by the spring 40 elastically supported at the rear end of the toner support member 22 according to the consumption of the toner, and the toner is completely When used, the toner support member 22 can be separated from the image support member 26 and replaced with a new toner support member 22.

On the other hand, as another embodiment of the present invention, a structure in which the installation position of the hook and the hook receiver is changed, that is, a hook extending to the toner bearing member side is formed on the upper surface of the image bearing member, and corresponding to the The hook may be formed on the upper surface so that the hook is detachably connected.

As described above, the image forming apparatus of the electrophotographic image recorder according to the present invention has a structure in which the toner supporting member and the image supporting member are detachably coupled, thereby facilitating the coupling operation so that only the toner supporting member that needs to be replaced at any time can be replaced. By doing so, the user can reduce the cost burden and reduce the number of parts, thereby improving work efficiency, increasing productivity, and reducing manufacturing costs.

Claims (7)

The latent imager 24 and the developer 20 of the toner support member 22 having the developer 20 and the one side of the image support member 26 having the latent imager 24 are in contact with each other. An image forming apparatus of an electrophotographic image recorder coupled in contact with each other, The toner support member 22 and the image support member 26 are separated from each other, and a hook 30 is formed on the top surface of the toner support member 22, and the upper surface of the image support member 26 corresponding to the toner support member 22 is formed. An image forming apparatus of an electrophotographic image recorder, characterized in that a hook receiving portion (32) to which the hook (30) is detachably coupled is formed. The hook 30 of the toner support member 22 has an extended end thereof bent toward the toner support member 22, and the hook 32 of the image support member 26 corresponding thereto is An image forming apparatus of an electrophotographic image recorder, wherein an extended end thereof is bent toward an image bearing member (26) to form a recess (32a). The bundle end 30a of the toner support member 22 is formed such that a bundle 30a is formed in close contact with the recess 32a of the hook support 32 of the image support member 26. An image forming apparatus of an electrophotographic image recorder, characterized in that. The hook 30 of the toner support member 22 is formed at both ends of the upper surface of the toner support member 22, and the hook 32 of the image support member 26 corresponding thereto is formed. An image forming apparatus of an electrophotographic image recorder, characterized in that formed on both ends of an upper surface of an image bearing member (26). According to claim 1, wherein the engaging position of the hook 30 of the toner support member 22 and the hook 32 of the image support member 26 is the developer 20 and the image support of the toner support member 22. An image forming apparatus of an electrophotographic image recorder, characterized in that the outer peripheral surface of the latent image forming machine 24 of the member 26 is positioned at a point within a range of 10 ° to 40 ° rotation to the image bearing member 26 with respect to the tangent tangent. . An image forming apparatus of an electrophotographic image recorder in which a toner bearing member having a developer and a latent image forming member and the developer are brought into contact with each other in a state in which each side of the image bearing member having a latent image forming machine is in contact with each other. The toner carrying member and the image carrying member are separated, and a hook extending to the toner carrying member is formed on an upper surface of the image carrying member, and the hook is detachably coupled to the top surface of the corresponding toner carrying member. An image forming apparatus of an electrophotographic image recorder, characterized in that formed. The rear end of the toner support member 22 is supported by a spring 40 provided on one side of the housing 38 to support and pressurize the toner support member 22. An image forming apparatus of an electrophotographic image recorder, characterized in that.

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