JP2003195615A - Developing cartridge, process cartridge, electrophotographic image forming apparatus and developer container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the constitution of a process cartridge and an image forming apparatus main body and to attain the cost reduction, as for a constitution of automatically opening a toner seal. <P>SOLUTION: A warm wheel 30a integrally molded with a toner seal take-up shaft 30 is arranged in a process cartridge B. A motor 31 is fixed to a supporting plate 32 which is arranged in the image forming apparatus main body A so as to oscillate at a fulcrum 32a, and the warm 31a of a motor shaft can be engaged/disengaged with the wheel 30a. When the wheel 30a is rotated in a direction shown by an arrow X2 so as to take up the toner seal, a thrust in a direction shown by an arrow Y1 is generated by the warm 31a, then, the warm is engaged with the wheel. When the motor 31 is rotated backward, the warm is disengaged with the wheel. The constitution of the cartridge B and also the device main body A is simplified. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing cartridge, a process cartridge, an electrophotographic image forming apparatus (hereinafter also referred to as an image forming apparatus), and a developer accommodating container.

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

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

Further, a developing cartridge is an image forming by integrally forming a developing member (developing an electrostatic latent image formed on an electrophotographic photosensitive member) and a developer container containing a developer to be supplied to the developing member into a cartridge. A device that can be attached to and detached from the device body.

[0005]

2. Description of the Related Art Conventionally, in an image forming apparatus using an electrophotographic image forming process, an electrophotographic photosensitive member and process means acting on the electrophotographic photosensitive member are integrally made into a cartridge, and this cartridge is used as an image forming apparatus. A process cartridge system that can be attached to and detached from the main body is adopted. According to this process cartridge system, the maintenance of the apparatus can be performed by the user himself without relying on a serviceman, so that the operability can be markedly improved. Therefore, this process cartridge system is widely used in image forming apparatuses.

A process cartridge having developing means,
The developing cartridge and the developer accommodating container are opened by using a drive source of the image forming apparatus main body to seal a seal member for sealing an opening serving as a developer (toner) discharge port of the developer accommodating container used for development. Is being done.

[0007]

Heretofore, in the image forming apparatus and the process cartridge, when the seal member that closes the opening of the toner container is opened by using the drive source of the image forming apparatus body before use, Since a large number of drive transmission members and release mechanisms are provided in the process cartridge, the number of parts of the process cartridge, which is a consumable item, increases, resulting in an increase in cost. Further, even when the drive transmission canceling mechanism is provided in the main body, simplification of the configuration has been desired.

Therefore, the present invention reduces the number of parts of the automatic unsealing device in the developer container of the developing cartridge and the process cartridge as much as possible, and unsealing the seal member in which the drive transmission / release mechanism of the image forming apparatus main body is simplified. An object of the present invention is to provide a developing cartridge, a process cartridge, an electrophotographic image forming apparatus, and a developer container having a function.

[0009]

The main invention of the present invention is as follows, when it is shown with the numbers corresponding to the claims.

According to a first aspect of the present invention, in a developing cartridge detachable from an image forming apparatus main body, a developing member for developing an electrostatic latent image formed on an electrophotographic photosensitive member,
A developer accommodating container having a discharge port for accommodating the developer and supplying the developer to the developing member, a seal member for opening and closing the discharge port of the developer accommodating container, and one end of the seal member are attached. A rotatable winding member and a drive member, which is driven by a drive motor provided in the image forming apparatus main body and is swingable about a fulcrum provided on the image forming apparatus main body side, swings in a rotating direction. And a driving force receiving member for driving the winding member, which is a receiving member for receiving and releasing the driving force.

According to a sixth aspect of the present invention, in a process cartridge detachably mountable to an image forming apparatus main body, an electrophotographic photosensitive member and a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member are provided. , A developer accommodating container having a discharge port for accommodating the developer and supplying the developer to the developing member, a seal member for opening and closing the discharge port of the developer accommodating container, and one end of the seal member attached The rotatable winding member and the drive member, which is driven by a drive motor provided in the image forming apparatus main body and is swingable about a fulcrum provided on the image forming apparatus main body side, swings in the rotation direction. And a driving force receiving member for driving the winding member, which is a receiving member of a driving force for engaging and disengaging the process cartridge.

The eleventh invention of the present application is an electrophotographic image forming apparatus which is detachable from a process cartridge and which forms an image on a recording medium, comprising: a. A developer storage container having an electrophotographic photosensitive member, a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member, and a discharge port for storing the developer and supplying the developer to the developing member. A seal member that seals the discharge port of the developer container so that it can be opened; a rotatable winding member that has one end of the seal member attached; and an image forming apparatus that is driven by a drive motor provided in the main body of the image forming apparatus. A driving force receiving member for driving the winding member, which is a driving force receiving member for swinging and engaging the driving member swingably provided about a fulcrum provided on the main body side in a rotating direction, and a driving member. Mounting means for removably mounting the process cartridge having the b. A drive member that is driven by a drive motor and is capable of swinging about a fulcrum and that swings in the direction of rotation to engage and disengage with a driving force receiving member of the process cartridge; c. An electrophotographic image forming apparatus, comprising: a conveying unit configured to convey a recording medium.

A sixteenth aspect of the present invention is a developer storage container which can be attached to and detached from a main body of an image forming apparatus. The developer storage container has a discharge port for storing the developer and supplying the developer to the main body of the image forming apparatus. It is driven by a container body, a seal member that seals the discharge port of the developer accommodating container body so that it can be opened, a rotatable winding member to which one end of the seal member is attached, and a drive motor provided in the image forming apparatus body. A drive member that is swingable around a fulcrum provided on the main body of the image forming apparatus is a drive force receiving member that swings and engages and disengages in the rotation direction, and a drive force receiver that drives the winding member. And a member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the description of the embodiments, the longitudinal direction means a direction parallel to the conveying direction of the recording medium and parallel to the surface of the recording medium. This longitudinal direction coincides with the longitudinal direction of the electrophotographic photosensitive member (hereinafter referred to as photosensitive drum).

(Description of Image Forming Apparatus Main Body and Process Cartridge Structure) First, an embodiment of the image forming apparatus main body A to which the process cartridge B constructed according to the present invention can be mounted will be described. FIG. 1 is a sectional view of an electrophotographic image forming apparatus main body A in the present embodiment, and FIG. 2 is a sectional view of a process cartridge B.

The process cartridge B has a drum-shaped electrophotographic photosensitive member, that is, a photosensitive drum 7. The photoconductor drum 7 is charged by a charging roller 8 which is a charging means, and then a laser beam corresponding to image information is emitted from the optical means 1 having a laser diode, a polygon mirror, a lens and a reflection mirror of the image forming apparatus main body A. By irradiating, an electrostatic latent image according to image information is formed on the photosensitive drum 7. This latent image is developed by the developing means 10 to be a visible image, that is, a toner image.

The developing means 10 has a developing frame 13 for holding a developing sleeve 12 and a developing blade 18 which are developing members.
And a developing container 11 as a developing cartridge to which a toner frame 14 as a developer accommodating container for accommodating toner as a developer is coupled.

The developing frame 13 has a developing chamber 13a, and the toner as a developer in the toner frame 14 adjacent to the developing chamber 13a is rotated by the toner feeding member 15 to cause the developing chamber 1 to rotate.
It is sent to the developing sleeve 12 of 3a. Development frame 1
3 includes a toner stirring member 16 near the developing sleeve 12, and circulates the toner in the developing chamber 13a. Further, the developing sleeve 12 contains a fixed magnet, and the toner is conveyed by rotating the developing sleeve 12, and triboelectrified charges are applied by the developing blade 18 to form a toner layer having a predetermined thickness. It is conveyed to the developing area of the drum 7. The toner supplied to the developing area is transferred to the electrostatic latent image on the photosensitive drum 7,
Form a toner image. The developing sleeve 12 is connected to a developing bias circuit, and is normally applied with a developing bias voltage in which a DC voltage is superimposed on an AC voltage.

On the other hand, in synchronization with the formation of the toner image, the recording medium 2 set in the paper feeding cassette 3a is conveyed to the transfer position by the pickup roller 3b, the conveying roller pairs 3c and 3d, and the registration roller pair 3e. A transfer roller 4 as a transfer unit is disposed at the transfer position, and a toner image on the photosensitive drum 7 is transferred to the recording medium 2 by applying a voltage.

The recording medium 2 on which the toner image has been transferred is conveyed to the fixing means 5 by the conveying guide 3f. Fixing means 5
Is provided with a fixing roller 5b including a driving roller 5c and a heater 5a, and applies heat and pressure to the recording medium 2 passing therethrough to fix the transferred toner image on the recording medium 2.

The recording medium 2 is conveyed by a pair of discharge rollers 3g and 3h, and is discharged to a discharge tray 6 via a reversing path 3j. The discharge tray 6 is provided on the upper surface of the image forming apparatus main body A. Alternatively, the swingable flapper 3k may be operated to eject the recording medium 2 without passing through the reversing path 3j. In this embodiment, the pickup roller 3b, the pair of conveying rollers 3c and 3d, the pair of registration rollers 3e, the conveying guide 3f, and the pair of discharging rollers 3g and 3h.
The transport means is constituted by.

The photosensitive drum 7 after the toner image is transferred onto the recording medium 2 by the transfer roller 4 is subjected to the next image forming process after the toner remaining on the photosensitive drum 7 is removed by the cleaning means 9. It The cleaning means 9 scrapes off the residual toner on the photosensitive drum 7 by an elastic cleaning blade 9a provided in contact with the photosensitive drum 7, and collects it in the removed toner reservoir 9b.

On the other hand, in the present embodiment, as shown in FIG. 2, the process cartridge B contains toner, and the developing sleeve 12 and the developing sleeve 12 are attached to the toner frame body 14 which is a developer accommodating container having the toner feeding member 15. A developing container 13 holding a developing member such as a blade 18 is welded to integrally form a developing container 11, and the developing container 11 further includes:
The cleaning unit 9 having the photosensitive drum 7, the cleaning means 9 such as the cleaning blade 9a, and the charging roller 8 attached to the cleaning frame 9c is integrally connected with a pin 38 to form a cartridge.

Such a process cartridge B is mounted on the cartridge mounting means in the image forming apparatus main body A by opening an opening / closing cover (not shown) of the image forming apparatus main body A, and
Remove it.

(Embodiment 1) (Explanation of Seal Winding Portion) As shown in FIG. 3, toner is transferred from the toner frame 14 to the developing frame 13 at the joint between the toner frame 14 and the developing frame 13. An opening 14i is provided as a discharge port for sending out.

Here, the seal member 100 is formed in a sheet shape, and is attached so as to close the opening 14i of the toner frame body 14.

The seal member 100 has an arrow X1 at its end.
By pulling in the direction, the toner frame 14 is unsealed from the opening 14i.

The seal member 100 has an opening 1
The winding shaft 3 is folded back at one end 100a in the longitudinal direction of 4i.
It is fixed at 0 and attached. That is, the seal member 100
A hole (not shown) is formed at the tip of the roller, and the hole is hooked on a claw (not shown) of the winding shaft 30 to fix it. When the seal member 100 is unsealed, the winding shaft 30 moves in the direction of arrow
It is performed by rotating in two directions. As shown in FIG. 4, the take-up shaft 30 is rotated by a take-up motor 31 as a drive motor provided in the image forming apparatus main body A as a drive source. Further, elongated holes 13b and 13c for positioning the winding motor 31 are provided at the end of the developing device frame 13.

FIG. 4 shows a winding structure. Winding motor 3
1 is integrally fixed to a support plate 32, and the support plate 32 is attached to the apparatus main body A so as to be swingable around a fulcrum 32a. The fulcrum 32a is configured by rotatably fitting a round shaft fixed to the apparatus main body A and a hole of the support plate 32. A worm gear 31a is fixed to the motor shaft of the winding motor 31 as a drive member. That is, the worm gear 31a is a drive member that is swingably provided around the fulcrum 31 provided on the apparatus body A side. With the worm gear 31a and the worm wheel 30a meshing with each other, the worm gear 31a rotates the integral or integral worm wheel 30a at the same center as the winding shaft 30 which is the winding member, thereby winding the seal member 100. here,
The worm wheel 30a is a driving force receiving member that drives the winding member, and is a driving force receiving member that oscillates and disengages the worm gear 31a depending on the rotation direction. A compression coil spring 33 for bringing the worm gear 31a and the worm wheel 30a into contact with each other, and a restriction member 34 for adjusting the operating length (compressed length) of the compression coil spring 33 are provided. Here, the developing member 34 is guided to the apparatus main body A in the directions of arrows N1 and N2 shown in FIGS. 5 and 6 by a guide (not shown), and is provided on an opening / closing cover (not shown) for opening / closing the cartridge mounting portion of the apparatus main body A. It is designed to work together with opening and closing.

(Description of Winding Operation) Next, the seal member 10
The opening operation of 0 will be described with reference to FIGS. 5 and 6 which are conceptual diagrams.

First, as shown in FIG. 5, a new process cartridge B is mounted in the image forming apparatus main body A in the direction of arrow IN.

Interlocking with the opening / closing of the opening / closing cover (not shown) of the apparatus main body A or the attaching / detaching operation of the process cartridge B,
The regulating member 34 moves in the longitudinal direction (arrow N1) by a link mechanism (not shown). Support plate 32 and winding motor 3
1 is fixed and operates integrally. Support plate 32
Is provided with a fulcrum 32a with respect to the image forming apparatus main body A, and rotates about the fulcrum 32a. When the regulation member 34 is pushed in the direction of the arrow N1, the support plate 32 is compressed by the compression coil spring 33.
The urging force (in the Y2 direction) causes the fulcrum 32a to swing. Since the support plate 32 and the winding motor 31 are fixed and operate integrally, the worm gear 31a of the winding motor 31 and the worm wheel 30a formed integrally with the winding shaft 30 come into contact with each other. Become.

At this time, the positioning is performed by the convex portion 32b provided on the support plate 32 and the elongated holes 13b, 13c provided in a part of the developing device frame 13. The support plate 32 is vertically movable as will be described later, and moves in accordance with the mounting position of the developing device frame 13.

In this state, the winding motor 31 is rotated forward (X
(3 directions), the worm gear 31a meshes with the worm wheel 30a, and the worm wheel 30a provided integrally with the winding shaft 30 rotates in the arrow X2 direction,
The seal member 100 is wound up. Then worm gear 3
1a receives a reaction force in the direction of arrow Y1, and the support plate 32 receives a force about the fulcrum 32a in the direction in which the worm gear 31a bites into the worm wheel 30a. Winding motor 3
1 receives a force in the Y1 direction, the convex portion 32b and the long hole 13b
The end surface 13d of the above-mentioned contact with each other, and the axial position of the winding motor 31 is determined. As described above, the rotation of the winding motor 31 connects the drive of the worm wheel 30a and the worm gear 31a, positions the winding motor 31, and winds the seal member 100.

After the winding motor 31 is rotated for a sufficient time for winding the seal member 100, the winding motor 31 is rotated in the reverse direction (arrow X4 direction) as shown in FIG.

The winding shaft 30 has a one-way mechanism represented by a ratchet mechanism, and the seal member 1
Only the direction of winding 00 (X2 direction) can be rotated. Therefore, when the winding motor 31 is rotated in the reverse direction (X4 direction), a force is applied to the worm gear 31a in a direction away from the worm wheel 30a (arrow Y3), and a force is applied in a direction in which the worm wheel 30a and the worm gear 31a are disengaged. , The winding motor 31 has a fulcrum 32
Rotate counterclockwise about a to rotate the winding motor 3
The drive transmission between 1 and the winding shaft 30 is released. In the released state, the biasing force of the compression coil spring 33 (direction of arrow Y2)
Although the tooth tips of the worm gear 31a and the worm wheel 30a are in contact with each other, the force of the compression coil spring 33 is set to be weak and the support plate 32 is movable up and down. Even when the toner frame body 14 swings, the support plate 32 moves without affecting the pressure applied to the photosensitive drum 7 and the developing sleeve 12.

The vertical movement of the support plate 32 will be described. FIG. 7 is a diagram schematically showing a part of the support plate 32 and the developing device frame 13. It is a cross-sectional view seen from the arrow Z direction in FIG.

As shown in FIG. 7, the elongated holes 13b and 13c provided in the developing device frame 13 are elongated holes at right angles to the cross section of FIG. 7, but the convex portions 32b are just fitted in the vertical direction. To do. The long holes 13b and 13c are provided with slopes 13e at the upper and lower corners to widen the entrance, so that the height deviation between the developing frame 13 and the convex portion 32b of the support plate 32 can be allowed. The driving force of the winding motor 31 is applied, and the convex portion 32b swings while contacting the inclined surface 13e of the elongated holes 13b and 13c, fits into the regulating surface 13f, and when the insertion is completed, the winding portion is wound with the developing frame body 13. The positional relationship of the take-up motor 31 in the height direction is determined. The support plate 32 is free to move in the direction of the arrow Y4, and according to the above positioning, the developing device frame 1
Go up and down with 3.

As a result, when the worm gear 31a and the worm wheel 30a are meshed with each other, the worm gear 30a does not shift in the axial direction of the worm wheel 30a. Further, when the worm gear 31a and the outer periphery of the worm wheel 30a are in contact with each other, the convex portion 32b slides on the slope 13e by the frictional force acting on the outer periphery of the worm gear 31a in the direction of the arrow Y4 against the outer periphery of the worm wheel 30a, and the worm gear 31a. Worm wheel 31a
Since it is urged in the direction away from, the frictional force between the outer circumference of the worm gear 31a and the outer circumference of the worm wheel 30a is reduced.

As described above, the normal printing operation is started after the take-up motor 31 is released from the take-up shaft 30 through the normal rotation and the reverse rotation of the take-up motor 31.

The process cartridge B is replaced with the main body of the image forming apparatus A by jam processing or replacement of the process cartridge B.
When removing it from the process cartridge B, the opening / closing cover (not shown) of the apparatus main body A is opened in the same manner as when inserting the process cartridge B.
When the restricting member 34 retracts in the direction of arrow N2 in FIG. 6 in conjunction with the pulling-out operation, the support plate 32 also swings and retracts in the same direction around the fulcrum 32a, which may prevent the process cartridge B from being attached or detached. There is no. Here, the support plate 32 swings clockwise around the fulcrum 32a, and the protrusion 32b
Then, the contact force with the end surface 13d of the elongated hole 13b is released, so that the process cartridge B is in the unconstrained state.

Further, in the present embodiment, since the winding detection means is not provided, the winding operation is performed even when the process cartridge B is reinserted after the jam processing, and then the worm gear 31a is retracted.

(Second Embodiment) FIG. 8 shows a second embodiment. In this example, the developer cartridge is supplied in place of the process cartridge B of the first embodiment.

Here, in FIG. 8, the toner accommodating portion serves as a developer accommodating container, and the opening 14i is the developing device frame 13.
The toner is discharged from above into the developing chamber 13a therein and supplied to the developing sleeve 12. This opening 14i
Are sealed by a seal member 100. The take-up shaft 30, which is a take-up member, is arranged horizontally and the toner frame 14 is provided.
It is rotatably supported so as not to move in the axial direction. When the toner frame body 14 is a modified example of the process cartridge B of the first embodiment, the toner frame body 14 is fused and integrated with the developing frame body 13. Further, when the toner frame 14 is a developer accommodating container that is attachable to and detachable from the apparatus main body A, the developing frame 13
Is a stationary developing device having the developing sleeve 12 and the developing blade 18. Further, the toner frame 14 may be detachably attached to the process cartridge B as a developer accommodating container. The basic configuration and operation are the same as in the first embodiment.

In this embodiment, the opening 14i for replenishing toner is directed downward, and the positional relationship between the worm wheel 30a and the worm gear 31a is also vertical. In the present embodiment, since the fulcrum for pressing the photosensitive drum 7 and the developing sleeve 12 is the center of the two holes 40 provided in the fishing arm 39 of the developing frame 13, the developing frame 13
The swing direction of the support plate 32 and the swing direction of the support plate 32 are coincident with each other as indicated by an arrow Y5, and when the seal member 100 is wound, the back force of the tooth load between the worm gear 31a and the worm wheel 30a goes upward. Therefore, the developing sleeve 12 receives the force of rotating in the direction of the arrow Y6 about the hole 40, and is urged in the direction away from the photosensitive drum 7 in contact with the developing roller 12 in front of the developing roller 12 in FIG. Therefore, the influence exerted on the pressing force of the photosensitive drum 7 and the developing sleeve 12 is further reduced.

The present invention is also applicable to a developing cartridge.

In the above description, the suspension arms 39 are provided at both ends in the longitudinal direction of the developing device frame 13, and are connected to the mating members by the holes 38 provided in the suspension arms 39 by the pins 38 (see FIG. 2). This mating member is the frame body of the apparatus body A in the case of the toner frame body 14 as a developer accommodating container that can be attached to and detached from the apparatus body A, and the cleaning frame body 9c in the case of the process cartridge B.

[0048]

As described above, according to the rotation direction of the drive motor represented by the winding motor, the drive motor swings around the fulcrum to connect and disconnect the drive transmission, thereby sealing. The opening mechanism of the member can be simplified, the configurations of the electrophotographic image forming apparatus, the developer container, the developing cartridge and the process cartridge can be simplified, and the cost can be reduced.

[Brief description of drawings]

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

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

FIG. 3 is a perspective view showing configurations of a developing frame, a seal member, a toner storage container, and a winding shaft.

FIG. 4 is a perspective view showing a configuration of a developing device frame, a toner storage container, a winding shaft, and a winding motor.

FIG. 5 is a schematic plan view showing a relationship between forces acting on a drive transmission portion of a winding motor and a winding shaft.

FIG. 6 is a schematic plan view showing the relationship between the force acting on the drive transmission unit of the winding motor and the drive transmitting unit of the winding shaft.

FIG. 7 is a front view showing a method of positioning the winding motor and the developing device frame.

FIG. 8 is a perspective view showing a seal member opening mechanism adapted to a type in which a toner storage container and a developing frame are separated.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical means 2 ... Recording medium 3a ... Paper feed cassette 3b ... Pickup roller 3
c, 3d ... Conveying rollers 3e ... Registration roller pair 3f ... Conveying guides 3g, 3
h ... Ejection roller pair 3j ... Inversion path 3k ... Flapper 4 ... Transfer roller 5 ... Fixing means 5a ... Heater 5b ... Fixing roller 5c
Drive roller 6 Ejection tray 7 Photosensitive drum 8 Charging roller 9 Cleaning means 9a ... (Elastic) cleaning blade 9b Removable toner reservoir 9c Cleaning frame 10 Developing means 11 Developing container 12 Developing sleeve 13 ... development frame 13a ... development chambers 13b, 13c ... elongated holes 13d ... end face 13e ... slope 13f ... regulation surface 14 ... toner frame 14i ... opening 15 ... toner feeding member 16 ... toner stirring member 18 ... development blade 19 ... cleaning Unit 30 ... Winding shaft 30a ... Worm wheel 31 ... Winding motor 31a ... Worm gear 32 ... Support plate 32a ... Support point 32b ... Convex part 33 ... Compression coil spring 34 ... Restricting member 38 ... Pin 39 ... Hanging arm 40 ... Hole ... 100 ... Seal member 100a ... One end A in the longitudinal direction ... Image forming apparatus B ... Process cartridge N, N1, N2, X1, X2, X3, X4, Y1, Y
3, Y4, Z ... Arrow

Continued front page    (72) Inventor Tadayuki Tsuda             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation F-term (reference) 2H071 BA03 BA04 BA13 BA16 BA20                       CA05 DA06 DA08 DA13 DA26                       EA10                 2H077 AA02 AA06 AA35 AB14 AD06                       AD13 AD17 AD36 AE03 BA01                       BA09 CA11 EA13

Claims (20)

[Claims] 1. A developing cartridge detachably mountable to the main body of an image forming apparatus, a developing member for developing an electrostatic latent image formed on an electrophotographic photosensitive member, and a developer housed and supplying the developer to the developing member. Developer container having a discharge port for opening, a seal member that seals the discharge port of the developer container so that the discharge port can be opened, a rotatable winding member to which one end of the seal member is attached, and an image forming apparatus main body A drive member that is driven by a drive motor that is provided on the image forming apparatus and that is swingable about a fulcrum provided on the main body side of the image forming apparatus is a member for receiving a drive force that swings and engages and disengages depending on the rotation direction. And a driving force receiving member that drives the removing member. 2. A gear in which the driving member and the driving force receiving member mesh with each other, and when the winding member is rotating in the direction of winding the seal member, the gear on the image forming apparatus main body side and the developing cartridge side are formed. 2. The developing cartridge according to claim 1, wherein the gear meshing position is provided at a position where a force acts in a direction in which the gear bites. 3. A gear meshing position is provided at a position where force is exerted in a direction in which a gear of the image forming apparatus main body and a gear on the developing cartridge side are separated when the drive motor rotates in a direction opposite to a direction in which the seal member is wound. The developing cartridge according to claim 2, wherein the winding member can rotate only in a direction in which the sealing member is wound. 4. The developing cartridge according to claim 3, wherein the gear on the image forming apparatus main body side is a worm gear and the process cartridge side gear is a worm wheel. 5. The developing cartridge according to claim 2, 3 or 4, wherein a gear serving as a driving force receiving member is integrally or integrally provided at the same center as the winding member. 6. A process cartridge detachably mountable to an image forming apparatus main body, wherein an electrophotographic photosensitive member, a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member, and a developer are stored and developed. A developer accommodating container having a discharge port for supplying the developer to the member, a seal member for sealing the discharge port of the developer accommodating container so that it can be opened, and a rotatable winding member to which one end of the seal member is attached. And a drive member that is driven by a drive motor provided in the image forming apparatus main body and is swingable around a fulcrum provided on the image forming apparatus main body side by swinging in a rotational direction. A process cartridge comprising: a receiving member, which is a driving force receiving member for driving the winding member. 7. A gear in which the driving member and the driving force receiving member mesh with each other, and when the winding member is rotating in the direction of winding the seal member, the gear on the image forming apparatus main body side and the process cartridge side 7. The process cartridge according to claim 6, wherein the gear meshing position is provided at a position where a force acts in a direction in which the gear bites. 8. A gear meshing position is provided at a position where a force acts in a direction in which a gear of an image forming apparatus main body and a gear of a process cartridge side are separated when a drive motor rotates in a direction opposite to a winding direction of a seal. 8. The process cartridge according to claim 7, wherein the winding member can rotate only in a direction in which the sealing member is wound. 9. The process cartridge according to claim 6, wherein the gear on the image forming apparatus main body side is a worm gear, and the process cartridge side gear is a worm wheel. 10. The process cartridge according to claim 7, 8 or 9, wherein a gear serving as a driving force receiving member is integrally or integrally provided at the same center as the winding member. 11. An electrophotographic image forming apparatus which is attachable to and detachable from a process cartridge and which forms an image on a recording medium, comprising: a. A developer storage container having an electrophotographic photosensitive member, a developing member for developing an electrostatic latent image formed on the electrophotographic photosensitive member, and an outlet for storing the developer and supplying the developer to the developing member. A sealing member for sealing the discharge port of the developer storage container so that it can be opened; a rotatable winding member having one end of the sealing member attached; and an image forming apparatus driven by a drive motor provided in the main body of the image forming apparatus. A driving force receiving member for driving the winding member, which is a driving force receiving member for swinging and engaging the driving member swingably provided about a fulcrum provided on the main body side in a rotating direction, and a driving member. Mounting means for removably mounting the process cartridge having the b. A drive member that is driven by a drive motor and is capable of swinging about a fulcrum and that swings in the direction of rotation to engage and disengage with a driving force receiving member of the process cartridge; c. An electrophotographic image forming apparatus comprising: a conveying unit configured to convey a recording medium. 12. A gear in which a driving member and a driving force receiving member mesh with each other, and when the winding member is rotating in a direction of winding the seal member, the gear on the image forming apparatus main body side and the process cartridge side 11. The electrophotographic image forming apparatus according to claim 10, wherein a fulcrum position is provided at a position where a force acts in a direction in which the gear bites. 13. A fulcrum position is provided so that a force acts in a direction in which a gear of an image forming apparatus main body and a gear of a process cartridge separate when a drive motor rotates in a direction opposite to a direction in which a seal is wound, and the winding is performed. The electrophotographic image forming apparatus according to claim 11, wherein the member can rotate only in a direction in which the seal member is wound up. 14. The electrophotographic image forming apparatus according to claim 12, wherein the gear on the main body side of the image forming apparatus is a worm gear, and the gear on the process cartridge side is a worm wheel. 15. The electronic device according to claim 11, wherein the drive member is a gear provided on a motor shaft of the drive motor, and the drive motor swings about a fulcrum. Photo image forming apparatus. 16. A developer accommodating container detachably mountable to an image forming apparatus main body, and a developer accommodating container main body having an outlet for accommodating the developer and supplying the developer to the image forming apparatus main body. A seal member that seals the discharge port of the container body so that it can be opened, a winding member that has one end of the seal member attached and is rotatable, and a drive motor that is installed in the image forming apparatus body, and is provided on the image forming apparatus body side. A drive member that is swingable about a fulcrum and that is a drive force receiving member that swings and engages and disengages in the rotation direction and that drives the winding member. Characteristic developer storage container. 17. A gear in which the driving member and the driving force receiving member mesh with each other, and the gear on the image forming apparatus main body side and the developer accommodating container when the winding member is rotating in the direction of winding the sealing member. 17. The developer accommodating container according to claim 16, wherein a gear engagement position is provided at a position where a force acts in a direction in which the gear on the main body side bites. 18. When the drive motor rotates in a direction opposite to the direction in which the seal is wound up, the gear meshing position is set to a position where force acts in a direction in which the gear of the image forming apparatus main body and the gear of the developer accommodating container main body side are separated from each other. 18. The developer accommodating container according to claim 17, wherein when provided, the winding member can rotate only in a direction in which the sealing member is wound. 19. The developer accommodating container according to claim 17, wherein the gear on the image forming apparatus main body side is a worm gear and the process cartridge side gear is a worm wheel. 20. The developer accommodating container according to claim 17, 18 or 19, wherein a gear serving as a driving force receiving member is integrally or integrally provided at the same center as the winding member.