JP2002258597A - Electrophotographic image forming device, process cartridge and developing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with the shortage of toner even in the case a means for detecting the presence/absence of toner is not installed in a process cartridge and a developing device, and also, to increase a toner capacity. SOLUTION: The inclined angle of the inclined surface 90 of the base of a toner chamber 45 is controlled to be equal to or below an angle of repose, and an elastic member 70 is stuck on the inclined surface 90 by means of a fixing part 70b. When a stirring blade 80b is rotated, a free end 70c is bent toward a recessed part 91, next, the stirring blade 80b is separated from the free end 70c, then, the elastic member 70 is vibrated, then, the toner on the elastic member 70 is moved to the recessed part 91. The toner remains in an area Z even in such the state that an image begins thinning, so that it can cope with by the time of getting a new cartridge ready.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device, a process cartridge and an electrophotographic image forming apparatus which can be used in an electrophotographic image forming apparatus and the like.

Here, the electrophotographic image forming apparatus forms an image on a recording medium using an electrophotographic image forming method. Examples of the electrophotographic image forming apparatus include, for example, an electrophotographic copying machine, an electrophotographic printer (for example, a laser beam printer, an LED printer, and the like), a facsimile machine, a word processor, and the like.

The above-mentioned process cartridge is a cartridge in which a charging unit, a developing unit, or a cleaning unit and an electrophotographic photosensitive member are integrally formed into a cartridge, and this cartridge is detachably mountable to an image forming apparatus main body. . In addition, at least one of the charging unit, the developing unit, and the cleaning unit and the electrophotographic photosensitive member are integrally formed as a cartridge so that the cartridge can be attached to and detached from the electrophotographic image forming apparatus main body. Further, it means that at least the developing means and the electrophotographic photosensitive member are integrally formed into a cartridge so as to be detachable from the main body of the electrophotographic image forming apparatus.

[0004]

2. Description of the Related Art In an image forming apparatus using electrophotography, if the image forming apparatus is used for a long time, it is necessary to replace a photosensitive drum, supply and replace a developer, and to adjust, clean, and perform other operations such as a charger and a cleaner container. Although replacement is required, such maintenance work has been practically difficult except for service personnel with specialized knowledge.

Therefore, in an image forming apparatus using an electrophotographic image forming process, the electrophotographic photosensitive member and the process means acting on the electrophotographic photosensitive member are integrally formed into a cartridge, and this cartridge is mounted on the main body of the image forming apparatus. A detachable process cartridge system is employed. According to this process cartridge system, the maintenance of the apparatus can be performed by the user himself without relying on a service person, so that the operability can be remarkably improved. Therefore, this process cartridge system is widely used in image forming apparatuses.

The prior art will be described with reference to FIGS. 5, 6 and 7. FIG. 5 shows a laser printer having a process cartridge mounted thereon, FIG. 6 shows a process cartridge, and FIG. 7 shows a developing device.

[0007] The configuration and operation of the laser printer are the same as those of the embodiment of the invention, and the description thereof is omitted here.

The supply of the toner to the developing roller 41 is performed as follows.

In the toner chamber 45, a stirring member 80 is disposed near the toner supply opening 43a. The bottom surface of the toner chamber 45 forms an inclined surface 90 inclined downward toward the stirring member 80. The inclined surface 90 is set to 65 degrees or more, which is an angle (repose angle) at which the toner slides down by its own weight when the process cartridge 2 is mounted on the apparatus main body 1. The toner on the inclined surface 90 is urged by its own weight.
0 and is supplied to the stirring member 80. Stirring member 8
Numeral 0 is rotationally driven in the R3 direction, and the toner near the stirring member 80 is sent in the direction of the toner supply opening 43a with the rotation of the stirring member 80.

Here, in order to minimize the toner remaining in the toner chamber 45, the bottom of the toner chamber is formed as a recess 91 near the stirring member 80, and the extension of the inclined surface 90 contacts the rotation area of the stirring member 80. Alternatively, a configuration in which they cross each other (Japanese Patent Application Laid-Open No. 05-35095) is known.

[0011]

As described above, when a stirring member that performs a simple rotating motion is used as described above, the stirring is limited to the toner near the stirring member. , That is, an angle at which the toner slides down by its own weight, specifically, an inclined surface inclined at 65 degrees or more. However, the smaller the inclination angle of the inclined surface is, the more space-efficient the design can be. Therefore, it is desired to provide a configuration that can surely send the toner even if the inclination angle is small.

On the other hand, a configuration in which all the toner is reliably conveyed is not always preferable in a configuration in which the toner remaining amount detecting mechanism is not used, and a configuration in which an appropriate amount of toner is retained in the developing device as a spare toner is desirable. More specifically,
When the image is blurred due to insufficient toner supply,
It is desirable that 10 to 20% of the toner remains as the spare toner and that the spare toner can be used by a simple operation.

An object of the present invention is to provide a developing device, a process cartridge, and an electrophotographic image forming apparatus which are compatible with the above two items with a simple and inexpensive configuration.

[0014]

In the invention according to the present application, an elastic member having a fixed portion and a movable portion is moved along the inclined surface so that the end of the movable portion of the elastic member is formed of the stirring member. The above-mentioned problem is solved by arranging the elastic member at a position where the elastic member protrudes from the rotation area and fixing the elastic member to the inclined surface at a fixing portion thereof.

The main features of the present invention are as described below with reference to the claims.

According to a first aspect of the present invention, there is provided a developing device for developing an electrostatic latent image formed on an electrophotographic photosensitive member, the developing device for developing an electrostatic latent image formed on the electrophotographic photosensitive member. A developing member, a developer accommodating portion for accommodating a developer used for developing the electrostatic latent image by the developing member, and a developer accommodated in the developer accommodating portion by rotating. A stirring member for stirring the developer, and an elastic member provided on an inclined surface which is a bottom surface when the developing device is mounted on the electrophotographic image forming apparatus main body and which is inclined downward toward the developing member. A movable portion provided in a movable state along the inclination direction of the inclined surface, and a region along the inclination direction of the inclined surface for attaching the elastic member to the inclined surface. And the fixing part fixed to An elastic member, wherein the movable portion is provided so as to protrude in a rotation region of the stirring member, and that the movable portion of the elastic member vibrates in conjunction with the rotation of the stirring member. This is a developing device characterized by the following.

According to an eleventh aspect of the present invention, there is provided a process cartridge detachably mountable to an electrophotographic image forming apparatus main body, wherein an electrophotographic photosensitive member and an electrostatic latent image formed on the electrophotographic photosensitive member are developed. A developing member, a developer accommodating portion for accommodating a developer used for developing the electrostatic latent image by the developing member, and a developer accommodated in the developer accommodating portion by rotating. A stirring member for stirring the developer, and an elastic member provided on an inclined surface that is inclined downward toward the developing member and serves as a bottom surface when the process cartridge is attached to the electrophotographic image forming apparatus main body. A movable portion provided in a movable state along the inclined direction of the inclined surface, and a region along the inclined direction of the inclined surface for attaching the elastic member to the inclined surface. An elastic member having a fixed portion fixed to the slope, and wherein the movable portion is provided so as to protrude in a rotation area of the stirring member, and interlocked with the rotation of the stirring member. A process cartridge wherein the movable portion of the elastic member vibrates.

An eighteenth invention according to the present invention relates to an electrophotographic image forming apparatus for forming an image on a recording medium,
(A) an electrophotographic photosensitive member, (b) a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member, and the developing member is used for developing the electrostatic latent image. A developer accommodating section for accommodating the developer, a stirring member for rotating and agitating the developer accommodated in the developer accommodating section, and the developing device mounted on the electrophotographic image forming apparatus main body. A movable portion provided on an inclined surface that is inclined downward toward the developing member when the movable portion is provided along the inclined direction of the inclined surface. An elastic member having a fixed portion having an area along an inclined direction of the inclined surface and being fixed to the inclined surface, for attaching the elastic member to the inclined surface, wherein the movable portion Is provided to protrude in the rotation area of the stirring member. A developing device in which the movable portion of the elastic member vibrates in conjunction with the rotation of the stirring member; and (c) a conveying means for conveying the recording medium. Is an electrophotographic image forming apparatus.

According to a nineteenth aspect of the present invention, there is provided an electrophotographic image forming apparatus for forming an image on a recording medium in which a process cartridge is detachable, wherein (a) an electrophotographic photosensitive member, and (b) the electrophotographic photosensitive member. A developing member for developing the electrostatic latent image formed on the body, and by the developing member,
A developer accommodating section for accommodating a developer used for developing the electrostatic latent image, and a stirring member for stirring the developer accommodated in the developer accommodating section by rotating, An elastic member provided on an inclined surface that is inclined downward toward the developing member, which is a bottom surface when the process cartridge is mounted on the main body of the electrophotographic image forming apparatus, the elastic member being provided in a direction in which the inclined surface is inclined. A movable portion provided along the inclined surface, and a fixed portion fixed to the inclined surface with a region along an inclined direction of the inclined surface for attaching the elastic member along the inclined surface. Wherein the movable portion is provided so as to protrude in a rotation area of the stirring member, and the movable portion of the elastic member vibrates in conjunction with the rotation of the stirring member. Process cartridge And mounting means for detachably mounting a, an electrophotographic image forming apparatus characterized by having a conveying means for conveying the (c) the recording medium.

[0020]

FIG. 1 shows an apparatus main body 1 and a process cartridge 2 constituting an image forming apparatus according to the present invention.
2 is a sectional view of the process cartridge 2 according to the present invention, FIG. 3 is a sectional view of the developing device 40 according to the present invention, and FIG. 4 is a partial sectional perspective view of the developing device 40 according to the present invention.

Hereinafter, an image forming apparatus according to the present application will be described with reference to FIGS.

(Overall Configuration) This image forming apparatus is a laser printer using an electrophotographic technique, in which a process cartridge 2 is detachably attached to an apparatus main body 1. When the process cartridge 2 is mounted on the apparatus main body 1, an exposure device (laser scanner unit) 3 is disposed above the process cartridge 2, and a recording medium (sheet) on which an image is to be formed is disposed below the process cartridge 2. Material)
A sheet tray 4 containing P is arranged. Furthermore,
In the image forming apparatus main body 1, a pickup roller 5, a paper feed roller (not shown), a pair of transport rollers (not shown), a transfer guide 6, a transfer charging roller 7, A guide 8, a fixing device 9, a discharge roller pair 10, a discharge tray 11, and the like are arranged.

(Configuration of Process Cartridge) The process cartridge 2 includes an image carrier (photosensitive drum) 20, a charging device 30, a developing device 40, and a cleaning device 50.
Are integrally accommodated. The photosensitive drum 20 and the charging device 30 are mounted on a frame 51 of the cleaning device 50. On the other hand, the developing device 40 has connecting arms 48 near both ends.

The developing device 40 is rotatably attached to the frame body 51 by means (not shown) at the distal end region of the coupling arm 48. Further, an urging means 60, which is a coil spring, is disposed between the developing device 40 and the frame 51, and the developing device 40 is urged clockwise in the drawing.

Here, at both ends of the developing roller 41, interval holding members (not shown) are attached, and the developing roller 41 is held at a predetermined interval from the photosensitive drum 20.

(Explanation of Image Forming Process) Next, the outline of image formation will be described. Based on the print start signal, the photosensitive drum 20 is driven to rotate at a predetermined peripheral speed (process speed) in the direction of arrow R1. The charging device 3 to which a bias voltage is applied is provided on the outer peripheral surface of the photosensitive drum 20.
0 is in contact, and the outer peripheral surface of the photosensitive drum 20 is uniformly and uniformly charged by the charging device 30.

The laser beam L modulated according to the time-series electric digital pixel signal of the target image information is output from the laser scanner unit 3, and is exposed through the exposure window 53 on the upper surface of the process cartridge 2.
Light enters the inside, and the outer peripheral surface of the photosensitive drum 20 is scanned and exposed. As a result, an electrostatic latent image corresponding to the target image information is formed on the outer peripheral surface of the photosensitive drum 20. This electrostatic latent image is transferred to a developer regulating member (developing blade) of the developing device 40.
The toner is developed as a toner image by the developer (toner) T on the developer carrier (developing roller) 41 which has been subjected to the triboelectric treatment and the layer thickness regulation by 42.

On the other hand, the sheet material P is fed from the sheet tray 4 by the pickup roller 5, a sheet feeding roller (not shown), and a pair of conveying rollers (not shown) in synchronization with the output timing of the laser light L, and is transferred. Via a guide 6, timing is supplied to a transfer position between the photosensitive drum 20 and the transfer charging roller 7. At this transfer position,
The toner image is sequentially transferred from the photosensitive drum 20 to the sheet material P.

The sheet material P to which the toner image has been transferred is separated from the photosensitive drum 20 and conveyed to a fixing device 9 along a conveyance guide 8, and a fixing roller 9a constituting the fixing device 9
The toner image is fixed to the sheet material P by applying a pressure and heat fixing process at the nip portion between the toner image and the pressure roller 9b. The sheet material P that has been subjected to the toner image fixing process is conveyed to the paper discharge roller pair 10 and discharged to the paper discharge tray 11.

On the other hand, the residual toner on the outer peripheral surface of the photosensitive drum 20 after the transfer is removed by the cleaning blade 52 of the cleaning device 50, and the photosensitive drum 20 is again subjected to image formation starting from charging.

(Structure of Developing Apparatus) The toner T in the toner chamber 45 is transported to the developer supply chamber 44 through a toner supply opening 45a by a toner feeding mechanism described later. The toner T transported to the developer supply chamber 44 is
The developing roller 41 is controlled by the magnet 41a contained in the developing roller 41.
Is transported in the direction of the developing blade 42 with the rotation of the developing roller 41 in the R2 direction, and is transported in the direction of the photosensitive drum 20 under the application of the tribo and the layer thickness regulation by the developing blade 42.

Here, a predetermined developing bias in which an AC voltage is superimposed on a DC voltage is applied to the developing roller 41, and the photosensitive drum 20 is grounded. Since an electric field is generated in a region where the photosensitive drum 20 and the developing roller 41 face each other, the latent image on the surface of the photosensitive drum 20 is developed by the charged toner T described above.

(Toner Feeding Mechanism) As shown in FIG. 3, the toner feeding mechanism includes a stirring member 80, an inclined surface 90, and an elastic member 7.
0 and a double-sided tape 71 as a fixing means.

The stirring member 80 is disposed in the vicinity of the toner supply opening 43a of the toner chamber 45, and is driven to rotate in the direction of arrow R3 by driving means (not shown). The stirring member 80 is provided with a stirring blade 80b on a mounting shaft 80a. Slope 90
Is a part of the bottom surface of the toner chamber 45, and has an inclined surface 90 inclined toward the developing roller 41 as a developing member, that is, inclined downward toward the agitating member 80. A 35-degree inclined surface 90 is formed in a state of being attached to the main body 1. In the vicinity of the stirring member 80, the bottom surface of the toner chamber forms a recess 91 along the rotation radius of the stirring member 80, and an edge 92 is formed at the boundary between the inclined surface 90 and the recess 91. The concave portion 91 is along the rotation path of the stirring member 80, and has a circular cross section as shown in the figure. The recess 91 and the stirring member 80 are provided in the toner chamber 45.
Over the entire width in the longitudinal direction. Elastic member 70
Is polyethylene terephthalate having a thickness of 50 μm,
A movable section 70a having a free end 70c and a fixed section 7
0b. The elastic member 70 is arranged such that the distal end region of the free end 70c protrudes into the rotation region of the stirring member 80. Here, the free end 70c of the elastic member 70 is set so as to protrude 4.0 mm from the edge 92 onto the concave portion 91, and protrudes 3.2 mm into the rotation region of the stirring member 80.

The elastic member 70 is fixed to the inclined surface 90 by a double-sided tape 71 to form a fixing portion 70b. Fixed part 7
Ob is disposed on the upstream side of the movable portion 70a with respect to the moving direction of the developer. Here, the double-sided tape 71 is set so that the toner stored in the area Z rearward from the double-sided tape 71 (far from the stirring member 80) is about 15% of the total toner. More specifically, the double-sided tape 71 in this embodiment has a width of 5.0 mm, and its wall-side end surface (right end surface in the figure) is approximately 7.0 m from the rear wall surface 45a of the toner chamber.
m. Here, the elastic member 70
Are arranged over almost the entire area of the inclined surface 90.
Here, the elastic member 70 is disposed on the lower side of the Z region which is the higher side of the inclined surface 90.

Here, the length L1 of the region of the fixed portion 70b in the direction of inclination of the inclined surface 90 is 5% to 30% of the length L2 of the same region of the movable portion 70c. As described above, in the inclination direction of the inclined surface 90, the elastic member 70 is disposed on the downstream side that is separated from the upstream side with respect to the moving direction of the toner on the inclined surface 90. That is, the rear wall surface 4 of the toner chamber 45
5a and the elastic member 70 are separated.

The material of the elastic member 70 is any one of polyester, polyethylene terephthalate, polyacetal, polyphenylene sulfide, and cellulose.
The thickness of the elastic member 70 is not less than 10 micrometers and less than 100 micrometers.

When the process cartridge 2 is mounted on the image forming apparatus main body 1, the inclination angle of the inclined surface 90 inclined toward the lower edge 92 is 20 degrees or more and 65 degrees with respect to the horizontal direction. Less than degrees.

The fixing portion 70b is a portion where the elastic member 70 is fixed to the inclined surface 90 by a double-sided tape, an adhesive, or a pivot. When the fixing portion 70b is a pivot, a stopper is provided to limit the position at which the elastic member 70 moves upward about the pivot.

When the apparatus main body 1 is in the operating state, the stirring member 80 is driven to rotate in the R3 direction as described above. With the rotation of the stirring member 80, the toner near the stirring member 80 is stirred, and a part of the toner is sent to the developer supply chamber 44 through the toner supply opening 43a. Further, in this embodiment, the free end 70c of the elastic member 70 is provided.
Since the tip region projects into the rotation region of the stirring member 80, the stirring member 80 periodically interferes with the elastic member 70.
At this time, the elastic member 70 formed of a polyethylene terephthalate material having a thickness of 50 micrometers is attached to the stirring member 8.
During the interference with the agitating member 80,
After passing, it is restored to a planar shape. At this time, the elastic member 80
Can be transmitted to the toner via the elastic member 70 in the range of the movable portion 70a extending from the free end 70c of the elastic member 70 to the fixed portion 70b. Even when the angle is smaller than the angle of repose, the toner slides down the inclined surface 90.

On the other hand, since the vibration is not transmitted to the rear of the fixed portion 70b disposed on the upstream side of the movable portion 70a in the moving direction of the toner, the toner in the area Z behind the fixed portion 70b is used as the spare toner as the toner chamber. It remains in 45. Therefore, when the image is blurred, the spare toner in the Z region can be moved to the concave portion 91 simply by removing the process cartridge 45 from the apparatus main body 1 and shaking it.

Although the embodiment has been described with reference to the process cartridge, the same applies to the developing device. here,
The developing device includes a developing cartridge which is detachably attached to the main body of the image forming apparatus and in which the developing means and the toner container are integrated, and a stationary type developing device which replenishes toner from a toner replenishing container in a stationary type.

As described above, in the embodiment of the invention according to the present application, the film-shaped elastic member 70 is
One end thereof protrudes into the rotation area of the stirring member 80, and
The process cartridge 2 is mounted on the apparatus main body 1 by providing a configuration in which the elastic member 70 is fixed to the inclined surface 90 at the other end side by being arranged along the inclined surface 90 forming the bottom surface of the toner chamber 45. In the state, the inclined surface 90
Even if the inclination angle is smaller than the angle of repose of the toner,
By vibrating the toner on top of the elastic member 7, it is possible to realize a configuration in which the toner can be surely conveyed.
With the configuration in which 0 is fixed to the inclined surface 90, the range in which the toner is vibrated is limited in design, and spare toner can be secured. Therefore, even when the toner on the movable portion 70c is consumed, the user can use the spare toner on the fixed portion 70b by removing and shaking the process cartridge 2.

Further, in the embodiment, the means for fixing the elastic member is a double-sided tape and the fixing position is set at 7.0 mm from the wall surface of the frame. However, the present invention is not limited to this. However, the same effect can be obtained, and the fixed position may be appropriately adjusted according to the target remaining toner amount.

[0045]

According to the present invention, even when the inclination angle of the bottom surface of the toner chamber is smaller than the angle of repose, the toner can be supplied to the developing member and the spare toner can be left. The spare toner can be easily used for development. Therefore, even if there is no toner presence detecting means, the toner does not run out at all,
Even if there is no replacement process cartridge, the printer can be used until it is obtained. Further, the developer accommodating portion can be enlarged.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an image forming apparatus.

FIG. 2 is a vertical sectional view of a process cartridge.

FIG. 3 is a longitudinal sectional view of the developing device.

FIG. 4 is a partial cross-sectional perspective view of the developing device.

FIG. 5 is a longitudinal sectional view of a conventional image forming apparatus.

FIG. 6 is a longitudinal sectional view of a conventional process cartridge.

FIG. 7 is a longitudinal sectional view of a conventional developing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus main body (apparatus main body) 2 ... Process cartridge 3 ... Exposure apparatus (laser scanner unit) 4 ... Sheet tray 5 ... Pickup roller 6 ... Transfer guide 7 ... Transfer charging roller 8 ... Transport guide 9 ... Fixing device 9a ... fixing roller 9b ... pressure roller 10 ... paper discharge roller pair 11 ... paper discharge tray 20 ... photosensitive drum 30 ... charging device 40 ... developing device 41 ... developer carrier (developing roller) 41a ... magnet 42 ... developer regulating member (Developing blade) 43a Toner supply opening 44 ... Developer supply chamber 45 ... Toner chamber 45a ... Rear wall surface 48 ... Coupling arm 50 ... Cleaning device 51 ... Frame body 52 ... Cleaning blade 53 ... Exposure window section 60 ... Biasing means 70 ... elastic member 70a ... movable part 70b ... fixed part 7
0c: free end 71: double-sided tape 80: stirring member 80a: mounting shaft 80b: stirring blade 90: inclined surface 91: concave portion 92: edge P: recording medium (sheet material) T: developer (toner)

Claims (19)

[Claims] 1. A developing device for developing an electrostatic latent image formed on an electrophotographic photosensitive member, comprising: a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member; A developer accommodating section for accommodating a developer used for developing the electrostatic latent image; and a stirring member for rotating and agitating the developer accommodated in the developer accommodating section. An elastic member provided on an inclined surface that is inclined downward toward the developing member, serving as a bottom surface when the developing device is mounted on the electrophotographic image forming apparatus main body, wherein the inclined surface is inclined; A movable portion provided in a movable state along a direction, and a fixed portion fixed to the inclined surface with a region along an inclined direction of the inclined surface for attaching the elastic member to the inclined surface. And an elastic member having In the developing device wherein the movable part, characterized in that said stirring member is provided with the protruding rotation region, has a movable portion of the elastic member in conjunction with the rotation of the agitating member is vibrated. 2. On a lower side of the inclined surface, the inclined surface has a concave portion provided along a rotation path of the stirring member, and a tip of a movable portion of the elastic member projects above the concave portion. The developing device according to claim 1, wherein the developing device is provided. 3. The developing device according to claim 1, wherein the fixed portion is disposed upstream of the movable portion with respect to a direction of movement of the developer in the direction of inclination of the inclined surface. 4. The apparatus according to claim 1, wherein the fixed portion and the movable portion are arranged over substantially the entire width of the inclined surface in a direction intersecting with and along the inclined direction of the inclined surface. 3. The developing device according to any one of 3. 5. The developing device according to claim 1, wherein the elastic member is disposed over substantially the entire area of the inclined surface in the inclined direction of the inclined surface. 6. The length of the region of the fixed portion in the direction of inclination of the inclined surface of the movable portion is 5% to 30% of the length of the region of the movable portion in the direction of inclination of the inclined surface. 6. The developing device according to any one of items 1 to 5, 7. The device according to claim 1, wherein in the inclination direction of the inclined surface, the elastic member is disposed on a lower side of the inclined surface that is off a higher side. Developing device. 8. The material of the elastic member is polyester,
8. The method according to claim 1, wherein the elastic member is any one of polyethylene terephthalate, polyacetal, polyphenylene sulfide, and cellulose, and the thickness of the elastic member is 10 μm or more and less than 100 μm. 9. The developing device according to one of the above. 9. When the developing device is mounted on the image forming apparatus main body, an inclination angle of the inclined surface inclined downward is 20 degrees or more and less than 65 degrees with respect to a horizontal direction. The developing device according to claim 1, wherein: 10. The fixing part includes a double-sided tape, an adhesive,
Alternatively, it is a portion where the elastic member is fixed to the inclined surface by a pivot.
The developing device according to any one of the above. 11. A process cartridge detachable from a main body of an electrophotographic image forming apparatus, comprising: an electrophotographic photosensitive member; a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member; A developer accommodating section for accommodating a developer used for developing the electrostatic latent image; and a stirring member for rotating and agitating the developer accommodated in the developer accommodating section. An elastic member provided on an inclined surface inclined downward toward the developing member, serving as a bottom surface when the process cartridge is mounted on an electrophotographic image forming apparatus main body, wherein the inclined surface is inclined; A movable portion provided in a movable state along a direction, and an elastic member fixed to the inclined surface with a region along an inclined direction of the inclined surface for attaching the elastic member to the inclined surface. An elastic member having a fixed portion, wherein the movable portion is provided so as to protrude in a rotation area of the stirring member, and the movable portion of the elastic member is interlocked with the rotation of the stirring member. A process cartridge characterized by vibrating. 12. On a lower side of the inclined surface, the inclined surface has a concave portion provided along a rotation path of the stirring member, and a tip of a movable portion of the elastic member projects above the concave portion. The process cartridge according to claim 11, wherein the process cartridge is provided. 13. The process cartridge according to claim 11, wherein the fixed portion is disposed upstream of the movable portion with respect to a moving direction of the developer in the direction of inclination of the inclined surface. 14. The apparatus according to claim 11, wherein the fixed portion and the movable portion are arranged over substantially the entire width of the inclined surface in a direction intersecting with and along the inclined direction of the inclined surface. 14. The process cartridge according to any one of 13. 15. The process cartridge according to claim 11, wherein the elastic member is disposed over the entire area of the inclined surface in the inclination direction of the inclined surface. 16. The length of the region of the fixed portion in the inclined direction of the inclined surface is 5% to 30% of the length of the region of the movable portion in the inclined direction of the inclined surface. 16. The process cartridge according to any one of 11 to 15. 17. The device according to claim 11, wherein the elastic member is disposed on a lower side of the inclined surface that deviates from a higher side of the inclined surface. Process cartridge. 18. An electrophotographic image forming apparatus for forming an image on a recording medium, comprising: (a) an electrophotographic photosensitive member;
(B) a developing member for developing the electrostatic latent image formed on the electrophotographic photoreceptor, and a developer for storing a developer used for developing the electrostatic latent image by the developing member. An accommodating portion, a stirring member that stirs the developer accommodated in the developer accommodating portion by rotating, and a developing device that forms a bottom surface when the developing device is mounted on the electrophotographic image forming apparatus main body. An elastic member provided on an inclined surface inclined downward toward the member, wherein a movable portion provided in a movable state along the inclination direction of the inclined surface; and the elastic member is attached to the inclined surface. An elastic member having a fixed portion fixed to the inclined surface having a region along the inclined direction of the inclined surface, wherein the movable portion protrudes into a rotation region of the stirring member. Provided, A developing device for a movable portion of the elastic member in conjunction with the rotation of the serial agitating member is vibrated, (c) the conveying means for conveying the recording medium, the electrophotographic image forming apparatus characterized by having a. 19. An electrophotographic image forming apparatus for detachably attaching a process cartridge to form an image on a recording medium, comprising: (a) an electrophotographic photosensitive member; and (b) an electrostatic member formed on the electrophotographic photosensitive member. A developer member for developing the latent image; and a developer accommodating portion for accommodating a developer used for developing the electrostatic latent image by the developing member. An agitating member for agitating the developer contained in the unit, and an inclined surface which is inclined downward toward the developing member, serving as a bottom surface when the process cartridge is mounted on the electrophotographic image forming apparatus main body. A movable portion provided in a movable state along the inclined direction of the inclined surface, and an inclined direction of the inclined surface for mounting the elastic member along the inclined surface. An elastic member having a fixed portion having an area along the fixed surface and fixed to the inclined surface, wherein the movable portion is provided so as to protrude in a rotation area of the stirring member, Mounting means for detachably mounting a process cartridge in which the movable portion of the elastic member vibrates in conjunction with rotation of the stirring member; and (c) transport means for transporting the recording medium. An electrophotographic image forming apparatus, comprising: