JPH11174829A - Developing device and process cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a developing device capable of eliminating waste and saving resources and energy by eliminating a conventional seal member and to provide a process cartridge. SOLUTION: This developing device 15 is provided with a developing container 18 containing toner (developer) 14, a developing sleeve (developer carrier) 2 extended and turned at an opening part 18a of the container 18 and an elastic blade 3 whose one end is fixed to the container 18 as the fixed end 3a and whose another end is moved to the sleeve 2 in the container 18 as the free end 3b. The opening part 18a of the container 18 is closed by the blade 3 so as to contain the toner 14. When a projection part in the container 18 is recessed, the free end 3b of the blade 3 is moved to the sleeve 2 so that the toner 14 is supplied to the vicinity of the sleeve 2 from a gap between the free end 3b and the inside wall of the container 18 and the blade 3 abuts on the sleeve 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device and a process cartridge for an image forming apparatus such as an electrophotographic copying machine and an electrophotographic printer.

[0002]

2. Description of the Related Art Generally, in an image forming apparatus employing an electrophotographic system, a developing device for visualizing a latent image on an image carrier is, for example, as shown in FIG. A configuration in which development is performed while applying an appropriate bias voltage between a developing sleeve 2 as a developer carrier and an image carrier 1 holding a latent image has been widely adopted.

There are various types of developers. For the sake of simplicity, a case where a magnetic or non-magnetic one-component toner is used as a developer will be described. Shall be called.

[0004] Until the developing device reaches the user, the toner is sealed and accommodated by sealing the portion of the wavy line L in the developing container 19, and this seal prevents the toner from scattering during transportation. I'm preventing.

[0005]

The seal member sealing the opening of the developing container 19 is pulled out and removed by the user to supply toner to the developing sleeve 2 at the time of initial printing. By the operation of pulling out the seal member, the toner contained in the developing container 19 flows out of the opening of the developing container 19 into the vicinity of the developing sleeve 2 to be replenished.

Before opening the seal member, it is necessary to prevent toner leakage even under severe vibration conditions such as transportation, so that the periphery of the seal member is welded to the opening of the developing container 19, and the opening is formed by the seal member. Sealed.

By the way, with the recent increase in global environmental protection, with the aim of saving resources and energy and reducing garbage,
A used developing container and a process cartridge including the used developing container are collected, and a part having a long product life is taken out for recycling and reuse (recycling).

[0008] However, since the conventional developing container is used after the sealing member welded as described above is pulled out and opened, the sealing member is discarded and hardly reused.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a developing device and a process cartridge which can eliminate waste by eliminating a conventional sealing member, and save resources and energy. To provide.

[0010]

According to a first aspect of the present invention, there is provided a developer container for storing a developer, and a developer carrier which extends and rotates at an opening of the developer container. And a developing device having an elastic blade fixed to the developing container with one end as a fixed end and moving the inside of the developing container to the developer carrier with the other end as a free end, wherein the elastic blade closes the opening of the developing container. When the developer is closed and contains the developer, the free end of the elastic blade moves to the developer carrier when the convex portion in the developer container is depressed, and moves from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier. And the elastic blade abuts on the developer carrier.

According to a second aspect of the present invention, there is provided a developer container for storing a developer, a developer carrier extending and rotating at an opening of the developer container, and having one end fixed to the ceiling of the developer container. In a developing device having a door moving inside the developing container with the other end as a free end, an opening of the developing container is closed by the door to contain the developer, and the free end of the door is a convex in the developing container. When the portion is dented, the door and the developer move to the developer carrier by its own weight, and the developer is supplied from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier.

According to a third aspect of the present invention, there is provided a developing container for storing a developer, a developer carrier extending and rotating at an opening of the developing container, and elastic blades having both ends fixed to the developing container. In the developing device, the elastic blade closes an opening of the developing container to contain the developer, and the elastic blade is cut by cutting the elastic blade so that the elastic blade comes into contact with the developer carrier and the developer carrier It is characterized in that the developer is supplied to the vicinity.

According to a fourth aspect of the present invention, there is provided a developer container for storing a developer, a developer carrier extending and rotating at an opening of the developer container, and having one end fixed to the developer container. In a developing device having an elastic blade, the elastic blade is integrally formed with a seal member, and an opening is formed by integrally forming the elastic blade and the seal member to close the opening of the developing container, and the developer is stored therein. The elastic blade abuts on the developer carrier by supplying the developer to the developer carrier in the vicinity of the developer carrier.

According to a fifth aspect of the present invention, the image forming apparatus is detachably mountable to the main body of the image forming apparatus, and includes at least an image carrier, a charging device, a developing device, and a cleaning device. , A developer carrier extending and rotating at an opening of the developer container, and a developer carrier that is fixed to the developer container with one end as a fixed end and the other end as a free end. In a process cartridge having an elastic blade that moves to a body, the developing device stores the developer by closing an opening of the developing container with the elastic blade, and a free end of the elastic blade has a convex inside the developing container. When the portion is depressed, the developer moves to the developer carrier, supplies the developer from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier, and the elastic blade comes into contact with the developer carrier. Features That.

According to a sixth aspect of the present invention, the image forming apparatus is detachably attachable to the main body of the image forming apparatus, and includes at least an image carrier, a charging device, a developing device, and a cleaning device. , A developer carrier that extends and rotates at the opening of the developing container, and is fixed to the ceiling of the developing container with one end as a fixed end and moves within the developing container with the other end as a free end. In the process cartridge having a door, the developing device stores the developer by closing the opening of the developing container with the door, and the free end of the door is provided with the door when the convex portion in the developing container is depressed. The developer moves to the developer carrier by its own weight, and supplies the developer from the gap between the free end and the inner wall of the developing container to the vicinity of the developer carrier.

According to a seventh aspect of the present invention, the image forming apparatus has at least an image carrier, a charging device, a developing device, and a cleaning device. The developing device includes a developer. A developing container that accommodates a developing container, a developer carrier that extends at the opening of the developing container and rotates, and an elastic blade having both ends fixed to the developing container. Closes the opening of the developing container to contain the developer, and cuts the elastic blade so that the elastic blade comes into contact with the developer carrier and supplies the developer to the vicinity of the developer carrier. It is characterized by the following.

[0018] The invention according to claim 8 is detachable from the main body of the image forming apparatus, and has at least an image carrier, a charging device, a developing device and a cleaning device, and the developing device includes a developer. And a process cartridge having an elastic blade fixed to the developing container with one end as a fixed end, the developing device comprising: The elastic blade is integrally molded with a seal member.The elastic blade is formed by integrally molding the elastic blade and the seal member, by closing the opening of the developing container, housing the developer, and cutting the seal member. It is characterized in that the developer is supplied to the vicinity of the developer carrier in contact with the developer carrier.

Therefore, according to the present invention, the sealing member is eliminated by providing the elastic blade with the sealing function of the sealing member or by providing a door which opens by its own weight in the developing container, thereby eliminating the sealing member and saving resources and energy by reducing waste. Can be realized.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First Embodiment First, a schematic configuration of a process cartridge 13 according to the present invention will be described with reference to FIG.

The process cartridge 13 includes a drum-shaped photosensitive drum 1 serving as an image carrier, and charging means 7 provided around the drum, a charging roller 7, a developing device 15, a cleaning device 12, and other image forming process means. The process cartridge 13 is removably mounted to the image forming apparatus main body.

In the image forming process, the photosensitive drum 1 is uniformly charged by the charging roller 7 driven by the rotation of the photosensitive drum 1, and the photosensitive drum 1 is exposed by the laser beam 4 to expose the photosensitive drum 1. A latent image is formed on the drum 1.

On the other hand, the toner 14 contained in the developing container 18 of the developing device 15 receives the force of the magnet roller 8 fixed in the developing sleeve 2 and the elastic blade 3 in contact with the developing sleeve 2. The latent image on the photosensitive drum 1 is coated while being charged while being charged on the developing sleeve 2, is conveyed by the rotation of the developing sleeve 2, and is applied to the photosensitive drum 1 by a potential difference between the photosensitive drum 1 and the developing sleeve 2 when approaching the photosensitive drum 1. Develop and visualize this as a toner image.

The toner image developed on the photosensitive drum 1 is
The image is transferred to the transfer paper P by the transfer roller 9. At this time, the remaining toner 14 remaining on the photosensitive drum 1 without being sufficiently transferred is scraped off by a cleaning blade 11 made of a rubber blade that comes into contact with the photosensitive drum 1.
The toner 14 is removed from the photosensitive drum 1.

On the other hand, the toner image transferred onto the transfer paper P is fixed on the transfer paper P by the fixing device 16, whereby a desired image is formed.

Next, details of the developing device 15 will be described with reference to FIGS. 1 is a sectional view of the developing device 15 when printing is not performed, FIG. 2 is a perspective view of the opening plate 17, FIG. 3 is a cutaway perspective view of the developing device 15 when the opening plate 17 is rotated, and FIG. FIG. 3 is a sectional view of the developing device during printing.

In the developing device 15, the surface of the developing sleeve 2 increases the sliding probability of the toner 14 and
In order to carry out No. 4 satisfactorily, it has moderate irregularities.
An elastic blade 3 made of urethane rubber, silicon rubber, SUS thin plate, or the like is provided above the developing sleeve 2, and the vicinity of the free end of the blade is in surface contact with the outer peripheral surface of the developing sleeve 2. Has been abutted.

In the initial stage of non-printing, the elastic blade 3 has one end fixed to the developing container 18 as the fixed end 3a and the other end fixed to the opening plate 17 as the free end 3b. The elastic blade 3 moves from the fixed end 3a to the free end 3a.
The toner container 14 is accommodated by closing the opening 18a of the developing container as a whole up to b. As described above, the elastic blade 3 covers the opening 18a of the developing container 18, thereby sealing the developing container 18 and keeping the airtightness sufficiently. Therefore, the toner 14 does not leak to the outside of the developing container 18 even if it is vibrated or dropped due to transportation during packing. In addition, since the elastic blade 3 is not in contact with the developing sleeve 2 when the developing sleeve 2 rotates when not opened,
There is no friction of the elastic blade 3 that prevents rotation, and the developing sleeve 2 can be rotated with a low torque.

As shown in FIG. 2, the opening plate 17 has a cylindrical shape in the longitudinal direction 17a,
It penetrates at the positions 7a and 17a, and this opening plate 17 is rotatable. The lever 17b is exposed from the side to the outside of the developing container 18, and the convex portion 17c is located on the floor 18b inside the developing container 18, and in a state before opening shown in FIG.
It overlaps with the free end 3b of the elastic blade 3. That is, the free end 3 b of the elastic blade 3 is prevented from moving by the elastic force in the direction of the developing sleeve 2 by the convex portion 17 c of the opening plate 17.

As shown in FIG. 3, the lever 1 of the opening plate 17
7b is exposed outside the developing container 18, and the user can turn it. FIG. 3 shows this lever 17b.
Shows that the user is holding and rotating.

When the user rotates the lever 17b,
Since the projection 17c is stored in the step 18c of the developing container 18, the projection 17c is recessed. Then, the free end 3b of the elastic blade 3 starts to move in the direction of the developing sleeve 2 by its own elastic force. After this lever 17b rotates,
The free end 3b of the elastic blade 3 and the step 1 of the developing container 18
The gap 8c gradually widens, and the toner 14 is provided to the developing sleeve 2 from this gap for the first time. Then, the elastic blade 3 comes into contact with the developing sleeve 2 as shown in FIG.

FIG. 4 is a sectional view of the developing device 15 during image printing. The toner 14a shown in FIG. 4 is supplied near the developing sleeve 2 after the lever 17b shown in FIG. 3 rotates. The elastic blade 3 that has come into contact with the developing sleeve 2 after moving on the developing sleeve 2 can perform frictional charging by regulating the coating amount of the toner 14a conveyed onto the developing sleeve 2 and applying the contact pressure.

As described above, according to the first embodiment,
The elastic blade 3 stores the toner 14 in the developing container 18 before printing.
To achieve the sealing function of the conventional sealing member,
The seal member that has been discarded after opening is no longer necessary, and waste is saved, thereby realizing resource saving, energy saving, and the like.

Further, at the time of reproduction, the elastic blade 3 is returned to the position of the opening of the developing container 18 again, and the toner 14 can be resealed by the elastic blade 3 by stopping the opening plate 17 by rotating in the reverse direction. When printing again, toner 1
4 can be restricted on the developing sleeve 2.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7 are sectional views of the developing device 25 according to the embodiment of the present invention. FIG. 6 shows a state in which the door 10 closes the opening 24a of the developing container 24 and stores the toner 14. FIG. 7 shows a state in which the door 10 is opened and the toner 14 is supplied near the developing sleeve 2.

In the developing device 25, an elastic blade 21 made of urethane rubber, silicon rubber, SUS thin plate, or the like is provided above the developing sleeve 2. The vicinity of the free end of the elastic blade 21 is the outer periphery of the developing sleeve 2. The surface is in contact with the surface.

In the second embodiment, at the initial stage of non-printing, the door 10 has one end as the fixed end 10a and
4 are connected rotatably about a fulcrum 24d provided on the ceiling of the inner surface. The other end of the door 10 is a free end 10
It is fixed to the opening plate 17 as b. The door 10 includes a developing container 24 as a whole from the fixed end 10a to the free end 10b.
By covering the opening 24a, the developing container 24 can be sealed and airtightness can be sufficiently maintained. For this reason, the toner 1 is protected against vibrations and unexpected drops due to transportation during packing.
4 does not leak outside the developing container 24.

The convex portion 17c of the opening plate 17 is the same as that of the first embodiment.
6 is located on the floor 24b inside the developing container 24 as in FIG.
In the state before opening shown in FIG. That is, the free end 10 b of the door 10 is prevented from moving by its own weight in the direction of the developing sleeve 2 by the convex portion 17 c of the opening plate 17.

Thus, similarly to the first embodiment, the opening plate 1
The lever 17b is exposed to the outside of the developing device 25 and can be turned by the user. When the user rotates the lever 17b, the convex portion 17c is moved to the developing container 24.
Is stored in the step portion 24c, and the convex portion 17c is recessed. Then, the free end 10b of the door 10 starts to move toward the developing sleeve 2 with its own elastic force due to its own weight and the weight of the sealed toner 14. After the rotation of the lever 17b, the gap between the free end 10b of the door 10 and the step 24c of the developing container 24 gradually widens, and the toner 14 is supplied to the developing sleeve 2 from this gap for the first time.

FIG. 7 is a sectional view of the developing device during image printing. The toner 14a shown in FIG. 7 is supplied to the vicinity of the developing sleeve 2 after the rotation of the lever 17b.

As described above, in the second embodiment,
Since the door 10 seals the toner 14 in the developing container 24 before printing and performs the sealing function of the conventional sealing member, the sealing member that has been discarded after opening is unnecessary, so that waste is saved and resources and energy are saved. Is realized.

At the time of reproduction, the opening 24 of the developing container 24 is
The door 10 can be resealed by the door 10 by returning the door 10 again to the position a and stopping the opening plate 17 by rotating it in the reverse direction.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a sectional view of a developing device 27 according to Embodiment 3 of the present invention, and FIG.
6a shows a state in which the toner 14 is housed by closing it,
FIG. 9 shows a state in which the elastic blade 22 is cut and opened to supply the toner 14 to the vicinity of the developing sleeve 2.

In the developing device 27, an elastic blade 22 made of urethane rubber, silicon rubber, SUS thin plate or the like is provided above the developing sleeve 2 and the yarn 3
After pulling 1, the vicinity of the tip on the free end side is in surface contact with the outer peripheral surface of the developing sleeve 2.

In Embodiment 3, both ends of the elastic blade 22 are fixed at the fixed ends 22a, 22
a is fixed to the developing container 26. Near the center of the elastic blade 22, the thread 31 is wound around the thin portion 22b once. The thickness of the elastic blade 22 is 1.0 m
m, but the thickness of the thin portion 22b is 0.2 mm,
By pulling out the yarn 31 that has been wound once, it can be cut sufficiently. The elastic blade 22 entirely stores the toner 14 by closing the opening 26 a of the developing container 26. As described above, the elastic blade 22 is connected to the opening 26 a of the developing container 26.
By covering the developer container 26, the developing container 26 can be sealed and airtightness can be sufficiently maintained. For this reason, the toner 14 is protected by the toner
6 does not leak outside.

In the third embodiment, since one end of the thread 31 is exposed outside the developing container 26, the user can pull it out. When the user pulls out the thread 31, the elastic blade 22 is cut at the thin portion 22b, and the elastic blade 22 starts moving in the direction of the developing sleeve 2 by its own weight and the weight of the sealed toner 14, and the other half is developed. It starts to move to the floor 26b of the container 26. Thread 3
After the pullout 1, the gap between the cut surfaces of the elastic blades 22 gradually widens, and the toner 14 is supplied to the developing sleeve 2 from this gap for the first time.

FIG. 9 is a sectional view of the developing device 27 during image printing. The toner 14a shown in FIG. 9 is supplied to the vicinity of the developing sleeve 2 after the thread 31 is pulled out. The elastic blade 21 abutted after moving on the developing sleeve 2
Can regulate the amount of toner 14a conveyed onto the developing sleeve 2 and apply frictional charging by contact pressure.

As described above, in the third embodiment,
Since the elastic blade 22 seals the toner inside the developing container 26 before printing and performs the sealing function of the conventional sealing member, the sealing member that has been discarded after opening is unnecessary, and waste is reduced, thereby saving resources and energy. Is realized. Moreover, the elastic blade 22 can regulate the toner 14 on the developing sleeve 2 at the time of printing.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, 10
The elastic blade seal 30 integrally molded with the developing container 2
8 is a cross-sectional view of the developing device 29 showing a state in which the opening 28a of FIG.
FIG. 12 is a cutaway perspective view of the developing device 29 showing a state when the b is pulled out. FIG. 12 is a cross-sectional view of the developing device 29 showing a state where the elastic blade seal 30 is cut open to supply the toner 14 to the vicinity of the developing sleeve 2. It is.

In the developing device 29, an elastic blade seal 30 made of urethane rubber, silicon rubber or the like is provided above the developing sleeve 2, and the seal portion 3 is provided.
After pulling the yarn 31 wound around 0b, the elastic blade portion 30c of the elastic blade seal 30 is brought into surface contact with the outer peripheral surface of the developing sleeve 2 in the vicinity of the free end. still,
The seal portion 30b is made of a film such as polyethylene, polypropylene, or the like.
b is integrally molded to form the elastic blade seal 30.

In the fourth embodiment, one end of the elastic blade seal 30 is fixed at the fixed end 30a at the initial stage of non-printing.
Is fixed to the developing container 28. Seal part 30b
The seal end 30d is exposed outside the developing container 28 between the felt portions 28b of the developing container 28. And
Near the center of the elastic blade seal 30, a thread 31 is wound around the end of the seal portion 30b once.
The thickness of the elastic blade portion 30c of the elastic blade seal 30 is 1.0 mm, but the thickness of the seal portion 30b is 0.2 mm.
mm, and can be cut sufficiently by pulling out the yarn 31 wound around one turn.

The elastic blade seal 30 entirely stores the toner 14 by closing the opening 28a of the developing container 28, and the periphery of the seal portion 30b is welded. As described above, the elastic blade seal 30 is connected to the opening 28 of the developing container 28.
By covering a, the developing container 28 can be sealed and airtightness can be sufficiently maintained. Therefore, the toner 14 does not leak to the outside of the developing container 28 even in the event of vibration due to transportation or the like at the time of packing or an unexpected drop.

In the fourth embodiment, as shown in FIG. 11, one end of the thread 31 is exposed outside the developing container 28, so that the user can pull it out. The periphery of the seal portion 30b of the elastic blade seal 30 is welded. When the user pulls out the thread 31,
The elastic blade seal 30 is cut at the end of the seal portion 30 b, and the elastic blade portion 30 c starts moving toward the developing sleeve 2 in half with its own weight and the weight of the sealed toner 14. Then, as shown in FIG. 11, when the user holds the end portion 30d of the seal portion 30b remaining in the developing container 28 and pulls the end portion 30d out of the developing container 28 in the direction of the arrow, the toner 4 Supplied.

FIG. 12 is a sectional view of the developing device 29 during image printing. The toner 14a shown in FIG. 12 is supplied to the vicinity of the developing sleeve 2 after the thread 31 is pulled out.
The elastic blade portion 30c that comes into contact with the developing sleeve 2 after contacting the developing sleeve 2
The triboelectric charging can be performed by regulating the coating amount of a and the contact pressure.

As described above, in the fourth embodiment, the elastic blade seal 30 can seal the toner 14 in the developing container 28 before printing, and furthermore, the toner 14 is placed on the developing sleeve 2 during printing. Can be regulated. Even if the number of parts is reduced by integrally molding the elastic blade portion 30c and the seal 30b, the conventional function can be sufficiently performed, and the area to be discarded as the seal member can be reduced to about half.

[0056]

As is apparent from the above description, according to the present invention, the conventional sealing member can be provided by providing the elastic blade with the sealing function of the sealing member or by providing the developing container with a door which opens by its own weight. There is an effect that resources can be saved, energy can be saved, and waste can be saved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a developing device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an opening plate of the developing device according to the first embodiment of the present invention.

FIG. 3 is a cutaway perspective view of the developing device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of the developing device according to the first embodiment of the present invention.

FIG. 5 is a sectional view of a process cartridge according to the present invention.

FIG. 6 is a sectional view of a developing device according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a developing device according to a second embodiment of the present invention.

FIG. 8 is a sectional view of a developing device according to a third embodiment of the present invention.

FIG. 9 is a sectional view of a developing device according to a third embodiment of the present invention.

FIG. 10 is a sectional view of a developing device according to a fourth embodiment of the present invention.

FIG. 11 is a cutaway perspective view of a developing device according to Embodiment 4 of the present invention.

FIG. 12 is a sectional view of a developing device according to a fourth embodiment of the present invention.

FIG. 13 is a sectional view of a conventional developing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 photosensitive drum (image carrier) 2 developing sleeve (developer carrier) 3, 21 elastic blade 3 a fixed end 3 b free end 7 charging roller (charging device) 10 door 12 cleaning device 13 process cartridge 14 toner (developer) ) 15, 25, 27, 29 Developing device 17 Opening plate 18, 19, 24, 26, 28 Developing container 30 Elastic blade seal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takeshi Konishi 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc.

Claims (8)

[Claims] 1. A developer container for storing a developer, a developer carrier that extends to an opening of the developer container and rotates, and is fixed to the developer container with one end as a fixed end and the other end as a free end. In a developing device having an elastic blade that moves inside a developing container to a developer carrying member, an opening of the developing container is closed by the elastic blade to contain the developer, and a free end of the elastic blade is in the developing container. When the convex portion is depressed, it moves to the developer carrier, supplies the developer from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier, and the elastic blade contacts the developer carrier. A developing device that comes into contact with the developing device. 2. A developer container for accommodating a developer, a developer carrier extending and rotating at an opening of the developer container, and one end fixed to the ceiling of the developer container and the other end free. In a developing device having a door that moves inside the developing container, the opening of the developing container is closed by the door to contain the developer, and the free end of the door is formed by recessing a convex portion in the developing container. A developing device, wherein the developer is moved to the developer carrier by the weight of the door and the developer by its own weight, and the developer is supplied from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier. 3. A developing device comprising: a developing container for storing a developer; a developer carrier extending and rotating at an opening of the developing container; and elastic blades having both ends fixed to the developing container. The elastic blade closes the opening of the developing container to contain the developer, and cuts the elastic blade so that the elastic blade comes into contact with the developer carrier and transfers the developer to the vicinity of the developer carrier. A developing device for supplying. 4. A developing device having a developer container for storing a developer, a developer carrier extending and rotating at an opening of the developer container, and an elastic blade fixed to the developing container with one end as a fixed end. In the above, the elastic blade is formed integrally with a seal member, and the opening of the developing container is closed with an integrally molded product comprising the elastic blade and the seal member to contain the developer, and the elastic member is cut by cutting the seal member. A developing device wherein a blade contacts the developer carrier to supply the developer to the vicinity of the developer carrier. 5. An image forming apparatus, comprising: an image carrier, a charging device, a developing device, and a cleaning device, the developing device comprising: a developing container containing a developer; A developer carrier that extends to the opening of the developer container and rotates, and an elastic member that is fixed to the developer container with one end as a fixed end and moves inside the developer container to the developer carrier with the other end as a free end. In the process cartridge having a blade, the developing device stores the developer by closing an opening of the developing container with the elastic blade, and a free end of the elastic blade develops when a convex portion in the developing container is depressed. A process cartridge which moves to the developer carrier, supplies the developer from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier, and the elastic blade abuts on the developer carrier. Di. 6. An image forming apparatus main body, comprising: at least an image carrier, a charging device, a developing device, and a cleaning device, wherein the developing device includes a developing container for storing a developer. A process cartridge having a developer carrier that extends and rotates in the opening of the developing container, and a door that is fixed to the ceiling of the developing container with one end as a fixed end and moves in the developing container with the other end as a free end. The developing device accommodates the developer by closing the opening of the developing container with the door, and when the free end of the door dents the convex portion in the developing container, the developing device develops by the weight of the door and the developer. A process cartridge that moves to the developer carrier and supplies the developer from the gap between the free end and the inner wall of the developer container to the vicinity of the developer carrier. 7. A developing device, which is detachable from an image forming apparatus main body and includes at least an image carrier, a charging device, a developing device and a cleaning device, wherein the developing device includes a developing container for storing a developer. And a process cartridge having a developer carrier extending and rotating at an opening of the developing container, and an elastic blade having both ends fixed to the developing container. A process for closing the portion, containing the developer, and cutting the elastic blade, whereby the elastic blade comes into contact with the developer carrier and supplies the developer to the vicinity of the developer carrier. cartridge. 8. An image forming apparatus, comprising: an image carrier, a charging device, a developing device, and a cleaning device, wherein the developing device includes a developing container containing a developer. A process cartridge having a developer carrier that extends and rotates in an opening of the developing container, and an elastic blade fixed to the developing container with one end as a fixed end, wherein the developing device includes a sealing member. The developing blade is integrally formed with the elastic blade and the sealing member. The opening of the developing container is closed to accommodate the developer, and the sealing member is cut so that the elastic blade is attached to the developer carrier. A process cartridge for supplying a developer to the vicinity of a developer carrier in contact therewith.