JPH10319701A - Toner cartridge and developing device - Google Patents

Abstract

(57) [Problem] To prevent scattering of toner when removing a toner cartridge and to improve operability. SOLUTION: In a toner cartridge provided with a stirring blade 23 rotatable in a circular cylinder having an opening 21a in a thrust direction, the stirring blade comprises a main wing 23a substantially parallel to the opening and a sub wing 23b substantially perpendicular to the opening. The sub wing is inscribed in an arc shape that approximately matches the inner diameter of the round cylinder, and the arc length is
By making the length greater than the arc length of the opening, the stirring blade does not protrude from the opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toner cartridge and a developing device used in an electrophotographic recording apparatus such as a copying machine and a printer.

[0002]

The present invention is a further development of the prior art described below.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a toner cartridge and a developing device which can smoothly operate the toner cartridge when the empty toner cartridge and the developing device are pulled out to supply toner to the developing device. .

[0004]

According to a first aspect of the present invention, there is provided a toner cartridge for supplying toner to a developing device, comprising: a cylindrical container having an opening in an axial direction; and a rotatable housing accommodated in the cylindrical container. Wherein the stirring blade comprises a main wing substantially parallel to the opening of the cylindrical container and a sub-wing which can straddle the opening of the cylindrical container in a circumferential direction of the cylindrical container. It is a toner cartridge characterized by the above-mentioned.

According to a second aspect of the present invention, the sub-wing portion is inscribed in an arc shape substantially matching the inner diameter of the round container, and the arc length is longer than the length of the arc in the width direction of the opening. A toner cartridge according to the first aspect of the present invention.

A third invention according to the present application is the toner according to the first or second invention, wherein the sub wing is provided integrally with the main wing by bending an axial end of the main wing. It is a cartridge.

A fourth invention according to the present application is characterized in that the sub wing is provided in a body relative to the main wing, and the main wing is provided so that its cross section in the radial direction is closed together with the main wing. The toner cartridge according to the first or second aspect of the invention.

A fifth invention according to the present application is the toner cartridge according to the fourth invention, wherein the sub-wing has a U-shaped cross section, and the shape combined with the main wing is a box shape.

A sixth invention according to the present application is the toner cartridge according to any one of the first to fifth inventions, wherein the sub wing is provided on the downstream side in the moving direction of the main wing. It is.

A seventh invention according to the present application is characterized in that the main wing and the sub wing are made of a PET sheet.
A toner cartridge according to any one of the first to sixth aspects of the present invention.

According to an eighth aspect of the present invention, there is provided a developing device for developing a latent image formed on an electrophotographic photosensitive drum using toner, comprising: a cylindrical container having an opening in an axial direction; A stirring vane rotatably accommodated in the
A cartridge mounting for detachably mounting a toner cartridge comprising a main wing substantially parallel to an opening of the cylindrical container and a sub wing which can straddle the opening of the cylindrical container in a circumferential direction of the cylindrical container. A developing member for applying toner to the electrophotographic photosensitive drum, a developing chamber for housing and supporting the developing member, and an opening between the cartridge mounting chamber and the developing chamber. And a frame.

A ninth invention according to the present application is the developing device according to the eighth invention, wherein the cartridge mounting chamber is substantially cylindrical.

A tenth invention according to the present invention is the developing device according to the ninth invention, wherein the cartridge mounting chamber has a shutter for opening and closing an opening of the developing frame.

An eleventh invention according to the present application is the developing device according to the tenth invention, wherein the shutter has a substantially semicircular cross section and is rotatable in a cartridge mounting chamber.

A twelfth invention according to the present application is characterized in that the toner cartridge is mounted inside the shutter, and the shutter has a sealing member that surrounds the opening of the shutter and seals the space between the toner cartridge and the toner cartridge. The developing device according to the tenth or eleventh aspect of the present invention.

[0016]

2. Description of the Related Art When supplying powder toner to a developing device of an image forming apparatus, a seal member sealing an opening of a toner cartridge is opened to improve operability of toner supply, and toner and stirring are performed. The toner cartridge containing the wing is inserted into a toner cartridge mounting chamber provided in the developing device. This opening is opened to the developing chamber in which the developing member is accommodated.

When the toner cartridge is provided with a stirring blade and the toner cartridge is mounted on the developing device, the stirring blade is connected to a driving source of the image forming apparatus main body, and the stirring blade rotates during image formation. The toner in the toner cartridge is sent to the developing chamber through the opening while stirring.

In such a toner cartridge, when the toner inside is empty, the empty toner cartridge is extracted and the toner cartridge filled with the toner is mounted on the developing device.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) In the present invention, the longitudinal direction refers to a direction perpendicular to the recording medium conveyance direction and parallel to the surface of the recording medium.

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

FIG. 5 is a schematic sectional view of the internal mechanism of the copying machine according to the first embodiment of the present invention.

The apparatus main body 10 has an original table glass 10a on the upper surface as shown in FIG. The original on the platen glass 10a is illuminated by a light source 1a, and a light image based on image information is emitted from an original reading unit 1 having a light source 1a, a mirror, and an imaging lens 1d to form an image provided in an image forming unit. An image of a developer (hereinafter, referred to as toner) is formed on the photosensitive drum 8 as a carrier. Then, in synchronization with the formation of the toner image, the recording medium 2 is transported from the cassette 3a by the transporting unit 3 including the paper feed roller 3b, the separation pad 3c, and the registration roller 3d.

Thereafter, the toner image formed on the photosensitive drum 8 is transferred to the recording medium 2 sent to the image forming section by applying a voltage to a transfer roller 4 as a transfer means. The sheet is further conveyed to a fixing unit 6 by a conveyance belt 5, a permanent image is formed by heat and pressure, and the sheet is discharged onto a sheet discharge tray 7.

The above will be described in detail. In the figure, an original platen glass 10 on which an original is placed
a is provided. An original reading means 1 is provided below the original table glass 10a. This document reading means 1
Is a light source 1a running along the platen glass 1a, a reflection mirror 1b, a return mirror 1c moving in the same direction at half the speed of the reflection mirror 1b, an imaging lens 1d, a fixed return mirror 1e, and a reflection mirror. 1f.

An image forming section is provided below the document reading means 1. This image forming section includes a photosensitive drum 8, a developing device 13, and a cleaning device 11, as shown in FIG. The developing unit 13 applies toner to the latent image formed on the photoconductor drum 8 and has a
A developing roller 13a which is arranged with a gap of 0 μm, has a magnet inside and rotates the outer peripheral cylinder and applies a developing bias, and regulates a layer thickness of the toner on the developing roller 13a as shown in FIG. A developing blade 13c that elastically contacts the generatrix of the developing roller 13a so as to apply a triboelectric charge to the toner, an agitating member 13d that agitates the toner in the developing chamber 13b, and a cartridge in which a toner cartridge 20 that replenishes the toner is detachably mounted. A mounting room 13e;
Is provided on the developing frame 12.

The cleaning device 11 includes a photosensitive drum 8
The photosensitive drum 8 is used to remove the toner remaining after the transfer onto the photosensitive drum 8 and is scraped off by a cleaning blade (not shown).
The upper residual toner is stored. A primary charger (not shown) for uniformly charging the photosensitive drum 8 and forming a latent image is disposed immediately downstream of the cleaning device 11 in the clockwise rotation direction of the photosensitive drum 8. .

The conveying means 3 transfers the recording medium 2 to the photosensitive drum 8
And between the transfer roller 4 and the transfer belt 5. The transport means 3 separates and feeds the uppermost sheet of the recording medium 2 stored in the paper feed cassette 3a with the paper feed roller 3b and the separation pad 3c urged toward the paper feed roller 3b. The registration roller 3d feeds the toner image between the photosensitive drum 8 and the transfer roller 4 at a time with respect to the toner image formed in the image forming section.

The transfer roller 4 presses the recording medium 2 against the photosensitive drum 8 and a voltage having a polarity opposite to that of the toner image on the photosensitive drum 8 is applied to transfer the toner image on the photosensitive drum 8 to the recording medium 2. The recording medium 2 rolls with the photosensitive drum 8 and is sent out onto the transport belt 5 so that the transport belt 5
Sends the recording medium 2 to the fixing means 6.

The fixing means 6 fixes the toner image on the recording medium 2 by applying heat and pressure to the interposed recording medium 2 by pressing and rotating the pressure roller 6b against a fixing roller 6a having a built-in heater. It is. The fixing unit 6 has a conveying force, and sends the recording medium 2 to the paper ejection roller 15, and the paper ejection roller 15 sends the recording medium 2 onto the paper ejection tray 7.

The operation of forming an image on the photosensitive drum 8 will now be described. The document placed on the platen glass 10a is pressed by a document pressing plate 14. When a copy button (not shown) is pressed, the light source 1a is turned on and travels in the direction of the arrow a shown in the figure. The light is reflected by the turning mirror 1c traveling in the same direction while adjusting the optical path length, passes through the imaging lens 1d, and is reflected by the fixed turning mirror 1e and the reflecting mirror 1f to form an image on the photosensitive drum 8.

On the other hand, the photosensitive drum 8 is uniformly charged by a primary charger (not shown), and a latent image is formed on the photosensitive drum 8 by exposure by the document reading means 1. Then, the latent image to which the toner is applied by the developing device 13 becomes a toner image. After the transfer roller 4 transfers the toner image to the recording medium 2 as described above, the toner remaining on the photosensitive drum 8 is removed by the cleaning device 11 to prepare for a new image formation.

The apparatus main body 10 includes a lower unit 1 having a conveying means 3, a transfer roller 4, a conveying belt 5, a fixing means 6, and the like.
OA and an upper unit 10B provided with the document reading means 1 and the image forming portion are pivotally connected by a hinge 16. Hinge 1
A latching device 17 is provided at the end of the device main body 10 opposite to 6. The latch device 17 is provided with a pin shaft 17a on the upper unit 10B.
The hook-shaped tip 17c of the latch 17b pivotally connected with the lower unit 10A engages with a receiving hole 17e provided integrally with the lower unit 10A. The latch 17b has a bell crank shape and the tip 1
The other end of 7c is a handle 17d. Although not shown, the lower unit 10A and the upper unit 10B are urged by a spring member (not shown) so as to be separated from each other. When the handle 17d is pulled upward, the latch 17b rotates clockwise about the pin shaft 17a, and the tip 1 having the hook is rotated.
7c comes out of the receiving hole 17e, and the upper unit 10B pivots around the hinge 16 and rises by the spring force of a spring member (not shown), and the cartridge mounting chamber 13e appears as shown in FIG. Here, the toner cartridge 20 that has run out of toner
7 is drawn out of the cartridge mounting chamber 13e and taken out of the apparatus, and when a replacement toner cartridge 20 is inserted, the drive gear 25 of the toner cartridge 20 shown in FIG. Toner cartridge 2
At the time of mounting 0, the shutter 13g closes the opening 12a of the developing frame 12 and faces the opening 21a of the toner cartridge 20. Note that the toner seal is a thin strip-shaped sheet that seals the opening 21a.
It is glued to the outer edge, and the end protrudes outward from the folded-back developing device 13 on the inner side. Here, when the end of the toner seal is pulled out by hand, the toner cartridge 20
Opening 21a is opened in advance. Here shutter 1
1 is rotated counterclockwise in FIG. 1, the toner cartridge 20 is opened through the opening 21a of the toner cartridge, the opening 13f of the shutter, and the opening 12a of the developing frame 12.
And the developing chamber 13b communicate with each other (the toner cartridge 2 described later).
0).

As shown in FIG. 1, a substantially cylindrical cartridge mounting chamber 13e is provided in the developing frame 12 in parallel with the developing roller 13a. An opening 12a is provided between the cartridge mounting chamber 13e and the developing chamber 13b over substantially the entire length of the developing frame 12. A shutter 13g having a semicircular cross section and an opening 13f along the inner periphery of the cartridge mounting chamber 13e so as to fit the periphery of the opening 12a.
Is rotatably provided. In the shutter 13g, a packing 13h is fixed on the inner peripheral side so as to surround the opening 13f. A packing 13i is fixed to the upper edge of the opening 12a of the developing frame 12 in the cartridge mounting chamber 13e so as to contact almost the entire length of the outer periphery of the shutter 13g in the longitudinal direction.

In the above, the shutter 13g is the developing frame 1
2 and the shutter 13g is rotated clockwise in FIG.
The upper edge of 3 g is in contact with the stopper 12 c of the developing frame 12, so that the opening 12 a of the developing frame 12 can be closed.

The cartridge mounting chamber 13e has an opening through which the toner cartridge 20 can be attached and detached on the near side where the user is located, which is orthogonal to the plane of FIG. 1, and has a wall on the back side where the toner cartridge 20 stops. The body is provided with a window through which a drive gear 25 of the toner cartridge 20 passes and meshes with a drive gear (not shown) of the apparatus main body 10.

FIG. 7 is an exploded view of the toner cartridge 20. As shown in FIG. 7, the cylindrical portion 24a of the handle portion 24 of the toner cartridge 20 is fixedly fitted to the inner periphery of one end of a hollow cylindrical round tube fitted into the cartridge mounting chamber 13e. At this time, a cut 21b provided at the end of the round tube 21
The protrusion 24e of the handle member 24 fits into the fitting. The handle member 24 is gripped by the collar 24c and the cylindrical portion 2
4a. The round cylinder 21 is provided with an opening 21a in the longitudinal direction. The opening 21a has substantially the same size as the opening 13f of the shutter 13g.

In the round tube 21, a cartridge stirring rod 22,
The stirring blade 23 and the drive gear 25 are attached. The journal 25a reduced in diameter from the tooth portion 25b of the drive gear 25 is rotatably fitted in a bearing hole 21d provided in the end plate 21c of the round tube 21. The cartridge stirring bar 22 is supported by being fitted to a bearing 24 b of a handle member 24 and fixed to a drive gear 25. A stirring blade 23 is fixedly connected to the stirring rod 22.

The stirring rod 22 is a round shaft 22a having both ends thin.
And the middle is the square axis 22b. A dowel 22c is integrally provided on one side of the square shaft 22b.
Are press-fitted respectively.

When an image is formed in a state where the toner cartridge 20 is mounted in the mounting chamber 13e with the cartridge, FIG.
As shown in FIG. 7, the stirring blade 23 in the toner cartridge 20 rotates clockwise to transfer the toner inside to the opening 21a of the toner cartridge, the opening 13f of the shutter, the developing frame 12
To the developing chamber 13b through the opening 12a.

As shown in FIG. 3, the stirring blade 23 according to the first embodiment of the present invention is formed by processing a film of PET or the like having a thickness of 100 to 300 μm into a predetermined plane shape including the main blade 23 a parallel to the stirring rod 22. Thereafter, each of the blades in the axial direction of the main wing 23a is bent so that the direction parallel to the radial direction becomes an angle, thereby providing an arc-shaped sub-wing portion 23b having an arc-shaped outer periphery longer than the width of the opening 21a. This sub wing part 2
3b has a blade surface orthogonal to the stirring rod 22, the outer circumference is an arc centered on the stirring rod 22, and its diameter is equal to the inner circumference of the round tube 21. Therefore, even when a part of the stirring blade 23 is in the vicinity of the opening 21a of the toner cartridge 20, even if the toner cartridge 20 is extracted from the cartridge mounting chamber 13e, the stirring blade 23 has at least one of the openings 21a in the sub wing portion 23b. Since the toner cartridge is in contact with one edge and does not protrude from the opening 21a, the toner cartridge can be taken out smoothly, and operability can be improved.

Here, the stirring blade 23 will be described in detail. The stirring blade 23 has a main wing 23a and a sub wing portion 23b integrally. When the main wing 23 is not mounted in the round tube 21, the main wing 23 is in a flat state due to elasticity. As shown in FIG. 1, the main wing 23 mounted on the round tube 21 is squarer than the center O of the stirring rod 22 and has a dimension e / 2 that is a half of one side of the stirring rod 22 whose center is the axis. Offset and fixed to the side 22d of the stirring blade 22. Assuming that points where a plane passing through the side 22d of the stirring rod 22 cuts the inner circumference of the round tube 21 are D and E, and a middle point C of the side 22d of the stirring rod 22 is a straight line connecting two points of the straight line DE. A line V, which is a middle point of L and is straight through the middle point C and is straight to the straight line L, passes through the center of the circular cylinder 21.

When the stirring blade 23 is inserted into the round cylinder 21 and the stirring blade 23 is rotated clockwise as shown in FIG.
Are in contact with the inner circumference of the round tube 21 and the main wing 23a is bent with a phase delayed from the straight line L. Looking at the distances R1 and R2 between the tip of the main wing 23a and the midpoint C, R2> R1. The straight line CD> R1 and the straight line CE> R2. The lengths of C to F along the main wing 23a> R1, C to G> R2.

As described above, the main wing 23a is bent and its tip is pressed against the inner periphery of the round tube 21. This press-contact force sends out the toner in the round cylinder 21. The deflection of the main wing 23
a, the inner circumference of the round tube 21 is scraped cleanly, and the toner in the round tube 21 is sent out to the developing chamber 13b throughout. And the opening 21a of the round tube 21
When the end of the main wing 23a tries to pass in the circumferential direction, the length of the sub wing portion 23b in the circumferential direction of the
It is sized to straddle. When the stirring blade 23 is attached to the round tube 21, the outer peripheral side of the sub-blade portion 23 b is in contact with or presses against the inner periphery of the round tube 21. Therefore, immediately after the main wing 23a has come out to the opening 21a of the round tube 21, the main wing 23a is supported by the sub wing portion 23b in contact with the round tube 21 and the opening 21a of the round tube 21 of the main wing 23a.
The distance from the edge gradually increases, and the largest load is applied to the sub wing portion 23b just before crossing the opening 21a.
However, since the sub wing portion 23b is on a plane perpendicular to the rotating rod 22, it is rigid and hardly bent.

In the example of FIG. 1, the sub-blade portion 23b is
Is provided on the downstream side of the main wing 23a with respect to the rotation direction of the main wing 2a.
Even if the sub wing portion 23b is provided on the upstream side of the main wing 2a,
At the beginning, the sub wing portion 2 is engaged with the opening 21a of the round tube 21.
The load applied to 3b is the largest, but the operation is the same as described above. The outer periphery of the sub wing portion 23b may have any shape as long as at least both ends are in contact with the toner cartridge 20, and may be, for example, a straight line connecting the outer peripheral angles.

The sub wing portion 23b may be provided on both sides of the main wing 23a in the rotation direction of the main wing 23a (see a two-dot chain line 23b1 in FIG. 1). Then, the opening 21a of the round tube 21 is formed.
The sub wing portion 23b1 straddles the main wing 23
a reaches the opening 21 a of the round tube 21,
Since the main wing 23a is always supported at both ends by 3b and 23b1 and passes through the opening 21a of the round tube 21, the burden on the stirring blade 23 is small.

The length of the sub wing portion 23b in the radial direction is set to be less than half the length of the main wing 23 in the radial direction as shown in FIG. .

(Embodiment 2) As shown in FIG. 4, each of the stirring blades 23 is provided with a sub-blade portion 23b which is bent in a U-shape. The outer periphery of a portion of the sub-wing portion 23b having a plane perpendicular to the stirring shaft 22 is arc-shaped and is larger than the width of the opening 21a of the toner cartridge 20. As in the first embodiment, the stirring blade 23 does not protrude from the opening 21a of the toner cartridge 20 as shown in FIG.
e, smooth operation and good operability at the time of extraction from e.

In particular, in the second embodiment, there are two sets of U-shaped sub-wings 23b opposed to each other with the stirring rod 22 interposed therebetween, which is difficult in the axial direction. Since the toner is conveyed with a time difference even in the U-shaped sub-wing portion 23b, the toner supply to the developing chamber 13b is performed in a stable manner.

In the second embodiment, the sub wing portion 23b is provided on the downstream side in the moving direction of the main wing 23a.
The sub wing portion 23b may be provided on the upstream side in the moving direction of 3a.

In the second embodiment, the sub wing portion 23b is formed in a U-shape, and when combined with the main wing 23, a box shape is formed. However, the shape of the sub wing portion 23b is not limited to the U-shape. Alternatively, a cylindrical shape having a semicircular cross section may be used in combination with the main wing 23a.

In the first embodiment, the axial end of the main wing 23a is bent substantially in the radial direction.
An auxiliary wing portion 23b may be provided in the middle of the axial direction of 3a.

In the present invention, as described above, the main wing of the stirring blade is larger than the inner diameter of the cylinder, and if only the main wing is used, the toner cartridge is pulled out of the cartridge mounting chamber with the main wing stopped at the opening of the cylinder. However, the main wing is located outside the opening of the round tube, so the main wing is difficult to pop out.On the other hand, the sub wing straddles the opening of the round tube in the circumferential direction. No longer protrude from the opening.

[0053]

As described above, according to the present invention,
A stirring blade in the cylindrical toner cartridge having an opening is provided with a sub-wing portion having an arc-shaped outer periphery in contact with the inner periphery of the cylindrical container in the width direction of the opening of the toner cartridge, and the length of the arc-shaped outer periphery is reduced Since the opening width of the toner cartridge is larger than the opening width of the toner cartridge, the stirring blade does not protrude from the opening of the toner cartridge.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a developing device when a toner cartridge according to Embodiment 1 of the present invention is in operation.

FIG. 2 is a longitudinal sectional view of the developing device when the toner cartridge according to Embodiment 1 of the present invention is stopped.

3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a front view of a stirring blade shown in a side view in the first embodiment.

4 (a) is a plan view, FIG. 4 (b) is a front view, and FIG. 4 (c) is a three-side view of the stirring blade shown in a side view.

FIG. 5 is a longitudinal sectional view of the electrophotographic copying machine according to the embodiment of the present invention.

FIG. 6 is a front view showing a state where an apparatus main body is opened in FIG. 5;

FIG. 7 is an exploded front view for explaining the structure of the toner cartridge according to the first embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Image reading means 1a ... Light source 1b ... Reflection mirror 1
c: folding mirror 1d: imaging lens 1e: folding mirror 1f: reflection mirror 2: recording medium 3: transport means 3a: paper feed cassette 3b: paper feed roller 3c: separation pad 3d: registration roller 4: transfer roller 5: transport Belt 6 ... Fixing means 6a ... Fixing roller 6b ... Pressure roller 7 ... Discharge tray 8 ... Photoreceptor drum 10 ... Device body 10A ... Lower unit 10B ... Upper unit 10a ... Original platen glass 11 ... Cleaner 12 ... Development frame 12a: opening, 12c: stopper 13: developing device 13a: developing roller 13b: developing chamber
13c: developing blade 13d: stirring member 13e: cartridge mounting chamber 13
f: Opening 13g: Shutter 13h: Packing 13
i: packing 14: document holding plate 16: hinge 17: latch device 17a: pin shaft 17b: latch 17
c: Tip 17d: Handle 17e: Receiving hole 20: Toner cartridge 21: Round cylinder 21a: Opening 21b: Cut 21c
... end plate 21d ... bearing hole 22 ... cartridge stirring rod 22a ... round shaft 22b ... square shaft 22c ... dowel 23 ... stirring blade 23a ... main wing 23
b: arc-shaped sub-wing portion 24: handle member 24a: cylindrical portion 24b: bearing
24c ... brim 24d ... grip 24e ... convex part 25 ... drive gear 25a ... journal 25b ... tooth part

Claims (12)

[Claims] 1. A toner cartridge for supplying toner to a developing device, comprising: a cylindrical container having an opening in an axial direction; and a stirring blade rotatably housed in the cylindrical container. A toner cartridge comprising: a main wing substantially parallel to an opening of the cylindrical container; and a sub wing capable of straddling the opening of the cylindrical container in a circumferential direction of the cylindrical container. 2. The sub-wing portion is inscribed in an arc shape substantially coinciding with the inner diameter of the round container, and the length of the arc is longer than the length of the arc in the width direction of the opening. 1
4. The toner cartridge according to claim 1. 3. The main wing is provided integrally with the main wing by bending an end in the axial direction of the main wing.
4. The toner cartridge according to claim 1. 4. The main wing according to claim 1, wherein the sub wing is provided so as to be integral with the main wing, and has a cross section in the radial direction of the main wing which is closed together with the main wing. 4. The toner cartridge according to claim 1. 5. The toner cartridge according to claim 4, wherein the cross section of the sub wing is U-shaped and the shape combined with the main wing is a box shape. 6. The toner cartridge according to claim 1, wherein the sub wing is provided on a downstream side in a moving direction of the main wing. 7. The toner cartridge according to claim 1, wherein the main wing and the sub wing are made of a PET sheet. 8. A developing device for developing a latent image formed on an electrophotographic photosensitive drum using toner, comprising: a cylindrical container having an opening in an axial direction; and a rotatable housing in the cylindrical container. And a stirring wing, wherein the stirring wing comprises a main wing substantially parallel to the opening of the cylindrical container, and a sub wing capable of straddling the opening of the cylindrical container in a circumferential direction of the cylindrical container. A cartridge mounting chamber for detachably mounting a cartridge; a developing member for applying toner to the electrophotographic photosensitive drum; a developing chamber for accommodating the developing member; and an opening between the cartridge mounting chamber and the developing chamber. And a developing frame constituting these components. 9. The developing device according to claim 8, wherein said cartridge mounting chamber is substantially cylindrical. 10. The developing device according to claim 9, wherein the cartridge mounting chamber has a shutter for opening and closing an opening of the developing frame. 11. The developing device according to claim 10, wherein the shutter has a substantially semicircular cross section and is rotatable in a cartridge mounting chamber. 12. The toner cartridge according to claim 10, wherein the toner cartridge is mounted inside the shutter, and the shutter has a sealing member that surrounds an opening of the shutter and seals a space between the toner cartridge and the toner cartridge. 3. The developing device according to claim 1.