JPS6095561A - Developing device - Google Patents

Abstract

PURPOSE:To prevent an error in the charging order of developer components by making two developer storage parts independent of each other, and providing special sealing mechanism to their opening parts. CONSTITUTION:A storage container 40 is provided with a storage chamber 41 for magnetic particles 20 and a storage chamber 42 for a nonmagnetic developer 24. Openings 46 and 47 corresponding to the storage chambers 41 and 42 are formed in a bottom plate 45, and the openings are normally sealed with sealing members 48 and 49. The sealing members 48 and 49 are tape-like flexible bodies (e.g. synthetic resin sheet) which are wider than the openings 46 and 47, >=2 times as long as the openings, and high in tensile strength. The opening 46 is sealed with the sealing member 48, and the remaining seal member 48a is folded to the front end side. A grip member 50 is fitted fixedly to the end part 48c of the folded sealing member 48a. On the other hand, the end part 49c of the folded member 49a of the sealing member 49 is folded back to the end part 45a of the bottom plate. This end part 45a is engaged with the fitting gap opening part of the grip member 50 fitted to the member 48a. Consequently, the end part 49c of the member is hidden behind the fitting gap opening part of the grip member 50. The grip 50 is drawn out to supply magnetic particles 20 and then the end part 49c is drawn out to supply the nonmagnetic developer 24 to the container 14 individually.

Description

[Detailed Description of the Invention] The present invention utilizes conventionally known appropriate principles and processes such as electrophotography, electrostatic recording, and magnetic recording to form a latent image on the surface of a photoreceptor, dielectric, Φ magnetic material, etc. The present invention relates to a developing device that visualizes an electrical latent image such as an electrostatic latent image or a magnetic latent image using a dry developer (toner).

More specifically, when the device is first used, first the first developer component and then the second developer component are sequentially introduced into the developer supply container to bring it into operation. It is an object of the present invention to strictly prevent 11- the introduction of first and second developer components in the wrong order.

The present applicant has previously proposed a developing device of the type described in 1. In which magnetic particles are first introduced into a developer supply container as a developer component of il, and a rotating acid is rotatably driven by a developer holding member. A magnetic adsorption layer (the first
Then, a non-magnetic developer is introduced as a second developer component and stored (second layer) on the outside of the magnetic particle magnetic adsorption layer to form a non-magnetic developer on the surface of the developer-holding member. Coating a thin layer of -+1, that Jlla
A method was proposed in which a latent image phenomenon was achieved by applying a thin coating layer on the development side to the 11F body surface (Japanese Patent Application No. 58-151020).

For convenience, the following explanation will be given using this developing device as an example.

Figure 1 shows the structure theory 1 of this type developing device! Fig. II. In the figure, 14 is a developer supply container, and 12 is a developing sleeve as a developer holding member. The developing sleeve 12 is a non-magnetic sleeve made of aluminum or the like, and is inserted into the container 14 with its right half circumferential surface in an oblong shape in the longitudinal direction of the container at the bottom of the left side wall of the developer supply container 140. l,
The left side (approximately 1') has its peripheral surface exposed to the outside of the container and is supported by a rotating eye 111, which serves as a horizontal function, and is driven to rotate in the counterclockwise direction as indicated by the arrow. The developer holding member 12 is not limited to an I-arranged cylinder (sleeve), but is also an endless bell I/Jrl that is rotationally driven.
The developing sleeve 120 container may be made of Tli, etc.
The exposed surface faces the surface of the latent image carrier 11, such as a photoreceptor, which is driven to move in the direction of arrow a, with a small gap remaining.

Reference numeral 13 denotes a fixed permanent magnet (magnet) as a fixed magnetic field generating means inserted into the developing sleeve 12 and held in the position and orientation shown in the figure. Even when the developing sleeve 12 is driven to rotate, this magnet 13 It is maintained in the position and posture shown in the figure. This magnet 13 has a north pole 17 and a south pole 18 .

The magnet 13 may be an electromagnet instead of a permanent magnet.

23 is fixed to the upper edge side of the opening of the developer supply container in which the developing sleeve 12 is disposed, the base is fixed to the side wall of the container, and the tip side is inserted into the container 14 from the position of the upper edge of the opening to extend along the longitudinal direction of the upper edge of the opening. This is a magnetic blade that serves as a magnetic particle restraining member disposed along the line, and is made by, for example, bending an iron plate into a crosswise simplified shape.

FIG. 2 is a diagram showing the position and angle relationship of the -2 magnetic blade 23 with respect to the developing sleeve 12. 19 is a point on the sleeve defined on the lower side of the sleeve rotation direction than the magnetic pole 12, and between the container in which the sleeve 12 is disposed [from the upper edge position of 1 in the sleeve rotation direction] and the downstream side. center line,
n is the normal to the sleeve 12 at the point 19. The magnetic brake 123 has its tip portion located at a point 19 with a gap distance d from the surface of the sleeve 12 with respect to the sleeve 12, and the center 1aη of the blade with respect to the normal n to the sleeve 12 at the position n of the point 19. The sleeve is disposed toward the downstream side in the direction of movement of the sleeve, with an angle δ formed between the sleeve and the sleeve. θ
is a vertical line m passing through the center of rotation of the sleeve 12 and the normal line n
P is the line connecting the rotation center of the sleeve 12 and the center of the magnetic pole 17, and π is the angle IW (position angle of the magnetic pole 17) between the chain line P and the vertical line m.

The gap distance d between the tip of the magnetic blade 23 and the surface of the developing sleeve 12 at the point 19 is 100 to 1000.
IL, preferably 200-5110 IL, in this example 300p. If the distance d is smaller than +00 mm, there is a drawback that magnetic particles, which will be described later, become clogged and are pushed out of the blade. If the OIL is larger than 10, a large amount of non-magnetic developer 1'l11 (described later) will leak out due to vibration, making it impossible to form a thin layer.

Reference numeral 27 denotes a magnetic particle circulation area limiting member whose lower surface is in contact with the surface side of the magnetic blade 23 and whose front end surface 27a is an undercut surface.

Reference numerals 20 and 24 designate magnetic particles as a first developer component and non-magnetic developer as a second developer component, which are sequentially charged and housed in the developer supply container 14.

The bottom plate of the developer supply container 14 is extended below the developing sleeve 12, which is a developer holding member, to prevent the developer from leaking to the outside. In addition, in order to further ensure the prevention of leakage of this developer to the outside, the extended bottom plate 14 is
A leaked developer collecting container portion 14d for receiving and restraining leaked developer is provided on the upper surface of the developer member 14b, and a developer scattering prevention member 21 is disposed along the length of the tip edge of the extended bottom plate 14b. A voltage having the same polarity as that of the developer is applied to this member 21 .

The magnetic particles 20 have a particle size of 30 to 200 pL, preferably 7
It is 0-150g. Each magnetic particle may be made of only a magnetic material, a combination of a magnetic material and a non-magnetic material, or a mixture of two or more types of magnetic particles. By first putting the magnetic particles 20 into the developer supply container 14, the magnetic particles 20 are exposed to the sleeve surface area facing into the container 14, that is, the lower edge of the opening of the container made of magnetic material on which the sleeve 12 is disposed. Each part of the sleeve surface area from the part 14a to the tip of the magnetic blade 23 serving as the magnetic particle binding eastern shrine is attracted and held by the magnetic field of the magnet 13 in the sleeve 12, forming a magnetic adsorption layer that completely covers the sleeve surface area. Become. A large amount of the non-magnetic developing material 24 is stored in the evening part of the magnetic particle magnetic adsorption layer as the first layer which appears in the sleeve 12 by being put into the container 14 after the magnetic particles 20 are put therein.

The first magnetic particles 20 preferably contain about 2 to 70% (heavy weight) of non-magnetic developer based on the magnetic particles, but may be composed of only magnetic particles. In addition, if the magnetic particles 20 are adsorbed and held as a magnetic adsorption layer on the sleeve surface area at one end, they will not substantially flow to one side even if the device rolls or the device is tilted considerably. It remains completely covered.

In the state in which the magnetic particles 20 and the non-magnetic developer 24 are sequentially immersed and accommodated in the container 14 as described above, the magnet 13
A magnetic brush 20a of magnetic particles is formed by the strong magnetic field of the magnetic pole 17 in a portion of the magnetic particle magnetic adsorption layer near the sleeve surface corresponding to the position of the magnetic pole 17.

In addition, even when the sleeve 12 is rotated in the direction of arrow b, the magnetic particle magnetic adsorption layer near the tip of the magnetic blade 23, which is a magnetic particle restraining member, is affected by gravity, magnetic force, and the magnetic blade 2.
Due to the balance between the restraint force based on the effect of the presence of 3 and the conveyance force in the moving direction of the sleeve 12, the sleeve 12 is restrained at the point 19 on the surface thereof, forming a stationary layer 20b that can move to some extent but is almost immobile. .

Also, when the sleeve 12 is rotated in the direction of arrow b, the magnetic pole 17
By appropriately selecting the arrangement position and the fluidity and magnetic properties of the magnetic particles 20, the magnetic brush 20a circulates in the direction of arrow c near the magnetic pole 17, forming a circulating layer 20c.

In the circulation layer 20c, the magnetic particles relatively close to the sleeve 12 rise from the vicinity of the magnetic pole 17 as the sleeve 12 rotates onto the stationary layer 20b located downstream of the rotation of the sleeve. In other words, it receives a force that pushes it down in one part. The pushed-up magnetic particles are removed from the magnetic blade 23 because the upper part of the circulation area is determined by the magnetic particle circulation area limiting member 27 provided on the upper part of the magnetic blade 23.
Instead of going upwards, it falls due to gravity and returns inward to the vicinity of the magnetic pole 17. In this case, magnetic particles that are located far from the sleeve surface and receive a small push-up force may fall before reaching the magnetic particle circulation area limiting part 27. That is, in the circulation layer 20c, the magnetic brush 20a of magnetic particles is circulated as shown by the arrow c due to the magnetic force and abrasive force due to gravity and magnetic poles, and the fluidity (viscosity) of the magnetic particles, and during this circulation, the magnetic brush 20a is made of magnetic particles. The non-magnetic developer 24 is sequentially taken in from the developer layer above the magnetic particle layer and returned to the lower part of the developer supply container 14, and this circulation is repeated as the sleeve 12 is rotated. The magnetic blade 23 does not directly participate in this circulation.

The non-magnetic developer that has been taken in and mixed into the magnetic particle magnetic adsorption layer on the surface of the sleeve 12 is charged by friction with the magnetic particles due to the flow of the magnetic particles, friction with the surface of the developing sleeve, etc. In this case, it is preferable to apply an insulating treatment such as an oxide film or a resin that is electrostatically at the same level as the non-magnetic developer to the surface of the magnetic particles to reduce the amount of tripo imparted by the magnetic particles and transfer the necessary charge to the developing sleeve 12. By applying the developer to the developing sleeve 12, it is possible to prevent the influence of deterioration of the magnetic particles and to stabilize the application of the developer to the developing sleeve 12. Since the charged developer is non-magnetic, it is not restrained by the magnetic field of the magnetic pole 17, and while the sleeve surface rotates from the lower edge 14a of the container opening where the sleeve 12 is disposed to the tip of the magnetic blade 23, Due to the mirroring force, each part of the sleeve surface is coated uniformly and thinly.

Even when the sleeve 12 is rotating, the magnetic particles in the magnetic particle beam layer 20b near the tip of the magnetic blade 23 are affected by the binding force based on the effects of gravity, magnetic force, and the presence of the magnetic blade 23, as described above, and the sleeve 12. The magnetic blade 2 is restrained by the balance with the conveying force in the moving direction of the magnetic blade 12.
Pass through the gap d between the tip of No. 3 and the sleeve 12 (No. 1,
Only the thin coating layer of the non-magnetic developer formed on the surface of the sleeve 12 forms the gap d as the sleeve 12 rotates.
Rotation 1. Closely faces the surface of the latent image carrier. Reference numeral 24a indicates a thin coating layer of non-magnetic developer formed on the surface of the developing sleeve 12. Also, 2 J1: Developing sleeve 1 on which a thin layer of magnetic developer is formed? The close facing portion between the latent image holding member 1.1 and the latent image holding member 1.1 is referred to as a developing portion 30.

In the developing section 30, the non-magnetic developer layer 24a on the surface side of the developing sleeve 12 is heated by the electric field of the developing bias applied between the developing image holding member 11 and the developing sleeve 12 by the bias power supply 25. Then, the latent image is selectively transferred and adhered in accordance with the latent image pattern, and the latent image is developed 24b in sequence (for this developing method, see, for example, Japanese Patent Publication No. 5B-32375, IKO). However, one in which direct current is superimposed on alternating current is preferable.

After passing through the developing section 30 and having been selectively developed and consumed, the surface of the developing sleeve 1 is returned to the developer supply container 14 by rotation of the sleeve.
The cycle in which the magnetic particles once again come into contact with the magnetic adsorption layer and are coated with the non-magnetic developer contained in the layer is repeated, and the surface of the latent image carrier 11 is continuously developed. As described above, the magnetic particle magnetic adsorption layer is naturally replenished by sequentially taking in developer from the storage layer of non-magnetic developer 24 existing outside the magnetic particle circulation layer 20c. In addition, the so-called ghost image phenomenon of the developing sleeve can be prevented.
The developer layer that has not been subjected to development is scraped off from the surface of the developing sleeve which has been rotated back into the container 14 to carry out the development, using a scraper means (not shown). It is also preferable to bring the developer into contact with the layer.

The non-magnetic developer 24 contains silica particles to improve fluidity, and for example, in a transfer image forming system, the latent image carrier 1
Additionally, abrasive particles or the like may be externally added to polish the surface of the photoreceptor. Alternatively, a non-magnetic developer 24 containing a small amount of magnetic particles may be used.

Thus, the developing device of the above example can stably form a coating over a long period of time with a non-magnetic developer having a sufficient charge amount for each tm on the surface of the developer holding member and forming a uniform thin layer. .

Therefore, this thin developer layer allows the latent image on the surface of the latent image carrier to be developed clearly and with good resolution.

In addition, magnetic developers can produce vivid colors, making it possible to produce high-quality color copies (single color, single color, etc.) with excellent color reproducibility.
111 colors (multicolor, natural color) can be obtained. In addition, the magnetic particle restraining member is tilted toward the downstream side in the moving direction of the developer holding member in 1. As a result, the magnetic field in the m-line direction can be made stronger than the magnetic field in the normal direction on the image-side holding member, and the magnetic particle circulation area limiting member allows for stable circulation of magnetic particles, making it possible to increase the magnetic field in the magnetic particle restraining member. Blocking of developer, fusion of developer, leakage of magnetic particles, etc. can be prevented. Therefore, a pressure fixing toner can also be used as the developer.

By the way, in an apparatus such as the above example in which there is an order in which the developer components are introduced into the developer supply container, if the order of introduction is incorrect, it is not possible to obtain a good developing effect. Regarding the above-mentioned side device, if you put the non-magnetic developer 24 first into the developer supply container 14 and then the magnetic particles 20 in the wrong order, in principle, each part of the non-magnetic developer should be placed against the surface of the developing sleeve 12. Not only is it impossible to form a uniform thin layer, but the developer is
2 and the magnetic blade 23, or between the developing sleeve 12 and the lower edge 14a of the opening of the container, a large amount leaks out of the container and scatters.

The present invention has been devised to strictly prevent such mistakes in the order of loading.

FIGS. 3 to 9 show the structure of an embodiment of the apparatus. Components common to those in the device shown in FIG. 1 are given the same reference numerals and repeated explanations will be omitted. In FIG. 3, 40 has two compartments, a first storage chamber 41 and a second storage chamber 42, for developer components, and the first storage chamber 41 contains magnetic particles 20 (magnetic particles only, or is 71.! of magnetic particles and J1 magnetic developer.
, the aggregate is placed in the second storage chamber 42 with a non-magnetic developer 24 (the developer alone, or with a small amount of magnetic particles, other fluid abrasives, abrasives, etc. added externally). Magnetic particles contained therein - developer storage container (hereinafter abbreviated as storage container)
It is.

A flange 1-1 is provided around the lower part of the storage container 40, and a flange 43 is provided, and a flange 1-1 is provided on the outer periphery of the opening on the upper surface of the developer supply container 14 of the developing device.
4d and screws 11-44 are attached to both flanges 43-14d to connect the storage container 40 to the developer supply container 14.

A first storage chamber 41 in which the magnetic particles 20 were previously stored in the storage container 40 is partitioned at the left corner of the container 40, and has a capacity of 11 S/person for the non-magnetic developer 24. It is smaller than the second storage chamber 42. 1. However, there is enough "vfI+" to accommodate the necessary magnetic particles 20. and storage container 4
0 into the top opening of the developer supply container 14 as described in 1 above, the first storage chamber 41 filled with 11y volume of magnetic 151 particles 20 is limited to the magnetic particle circulation area in the developer supply container 14. The structure is such that it is located approximately directly above the member 27.

The bottom plate 45 of the storage container 40 has first and second elongated openings 46 and 47 formed in the longitudinal direction of the chamber in the surface portions corresponding to the first storage chamber 41 and the second storage chamber 42, respectively. They are normally closed by the first and second seal members 48 and 49, respectively.

The first and second sealing members 48 and 49 have a width larger than that of the first and second openings 46 and 47, a length more than twice the length of each opening, and have strong tensile strength and flexibility. Elongated tape-like material (e.g. tape-like cut material of synthetic resin sheet)
It is.

5 and 6 show how the sealing members 48 and 49 are applied to the first and second openings 46 and 47, respectively, on the bottom plate 4.
5 is an exploded slope view looking up from below, and a bottom view of the bottom plate in a sealed state.

That is, the first opening 46 has a sealing member length of 6 mm corresponding to the length of the first opening 46 from one end side of the first tape-shaped sealing member 48 against the entire length of the opening. By pasting the edge of the former length of the seal member on the lower surface of the bottom plate around the opening 46 by means such as heat sealing, the remaining length of the seal member 48a is made into a linear shape m1. Fold back the length of the attached sealant toward the tip side. 481) indicates the folded portion. Free end 48c of the folded seal member 48a
Attach the handle part 4A50 to.

The handle member 50 consists of two upper and lower shield plates 50a and 50b which are stacked on top of each other and screwed together with screws 11-50C. 1 to securely connect the seal member to the free end. Moreover, this handle member 50 is formed between the lower barrier plates 50a and 50b by protruding outward from the end of the bottom plate of the storage container corresponding to the free end side of the folded seal member 4.8a. Bottom plate extension end 4.5
It has a fitting gap opening 50d that receives the opening 50a.

On the other hand, the second opening 47 is also sealed with a second tape-shaped seal member 49 in the same manner as the first opening 1146, and the free end 4 of the folded seal member 49a
9c is folded back and wrapped around the bottom plate extension end 45a from the lower surface side to the upper surface side as shown in FIG.

Then, the fitting gap opening 50d of the handle member 50 attached to the free end of the first sealing member 48a is connected to the bottom plate extension 45a around which the free end 49c of the second sealing member 49a is wrapped. 8 and 9, and the handle member 50 is externally fitted onto the bottom plate extension end 45a (FIGS. 8 and 9). This handle member 5
By fitting into the bottom plate extension end 45a of the second seal member 0, the free end 49c of the second seal member is in a state of being tucked into the fitting gap opening 50d of the handle member 50.

First and second storage chambers 41 and 42 of the storage container 40
The storage of the magnetic particles 20 and non-magnetic developer 24, the sealing of the bottom plate openings 46 and 47 with the sealing members 48 and 49, and the installation of the storage container 40 to the - side of the developer supply container 14 are carried out by the manufacturer. It will be held at.

On the user side, the magnetic particles 20 and the J1 magnetic developer 24 are sequentially introduced into the developer supply container 14 of the developing device 5 to operate the device 5, and the particles are stored as follows. The first and second seal members 48 and 49 of the container 40 are opened.

That is, first, each time the handle member 50 attached to the bottom plate extension end 45a is pinched and pulled, the handle member 50 is
1 from the bottom plate extension end 45a, and by continuing to pull the handle member 50, the first sealing member portion 48 sealing the first opening 146 with its pulling force.
are sequentially peeled off from the folded portion 481) side, and the first opening 1146 is opened. And finally the PfSl
Seal 81 (Pull and operate fertilizer F section 4450 until material 48 is completely pulled out of device 5. This first opening 4
6, the magnetic particles 200 in the first storage chamber 41 are
All) The magnetic particle 1 falls through the unsealed opening 46 into the magnetic particle circulation area limiting part 4] 27 in the developer supply container 14, and then the inclined surface on the upper surface of the member is inserted into the former tip of the part. It flows down in the side direction and is thrown into the container 14. And the development sleeve with the immersive magnetic particles] 2 development/II + supply? The circumferential surface area of the sleeve on all sides of the chamber is completely covered.

Next, the user pinches and pulls the free end 49c of the second seal member 49a, which has become exposed due to the removal of the handle member 50. The second sealing member portion 49 that seals the second opening 47 with the tension is the folded portion 49.
The second opening 47 is opened by peeling off sequentially from the b side. Finally, the second seal member 49 is installed N5.
Pull it out completely and remove it. As a result, the second storage chamber 4
The non-magnetic developer 24 in the second opening 47 is introduced into the developer supply container 14 into which the magnetic particles 20 have already been introduced. FIG. 4 shows the state after this injection is completed.

That is, when opening the first and second seal members 48 and 49, the handle 50 for opening the first seal member 48 is used.
1. The free end 48c of the seal member 48, which is invisible to the operator and serves as a knob for opening the second seal member 48, is hidden within the handle 50, and the free end 48c is hidden within the handle 50. 48c is a grip 50. Pinch the first seal R11J, I4g (it will be exposed for the first time when it is operated manually.Therefore, first open the second seal member 49, then open the first seal R11J, I4g). It is possible to strictly prevent the wrong order of operation of the sealing member 48, that is, the wrong order of putting the non-magnetic developer 24 and then the magnetic particles 20 into the developer supply container 14. It is something.

In this embodiment, an example was described in which two types of developer, magnetic particles and non-magnetic developer, were used, but the present invention is not limited to the type of developer at all. In addition, although we have described as an example a single-use type developing device in which the storage container 40 for magnetic particles and non-magnetic developer is integrated with the developer supply container 14, in this regard also, the storage container can be replaced separately. It can also be applied to cartridges for

The handle member 50 is not limited to the storage container bottom plate extension end 45a,
Alternatively, it may be fitted to the end of the protrusion 111 formed on the main body of the developing device or the like.

FIG. 10 shows the developing device 1-. 4 is a longitudinal sectional front view showing the schematic internal structure of a cartridge-type small-sized electrophotographic copying machine (personal type), which is an example of a cartridge-type small-sized electronic photocopying machine equipped with the structure described in FIGS. 3 to 9. be.

In the copying machine of this example, an original is placed with the image side to be copied facing downward on a predetermined position on the platen glass 91-1- of the reciprocating original platen 9 provided on the upper plate of the exterior casing of the machine. , its-
Cover the original pressure plate 92 from 1-.

Next, when a copy start button (not shown) is pressed, the photosensitive drum ti
rotational drive in the direction of the arrow, lighting of the document illumination lamp 10,
Movement of the document table 9, driving and energization of other process equipment, etc. are started in relation to each other, and copying is executed. That is, the photosensitive drum 11 that has started rotating is charged to a predetermined polarity by the corona discharger 3, and then sequentially receives slit exposure of the original image by the movable original platen 9 and the short focus optical element array 4, so that the original image is formed on its peripheral surface. electrostatic latent images are sequentially formed.

The latent image is then developed as a toner image by a developing device 5 and reaches a transfer corona discharger 6 section.

On the other hand, the transfer paper PP is transferred from the paper feed cassette 7 to the paper feed roller 8.
is edged out to one sheet, rotated with the rotation of the drum 11 by the distro roller pair 15, and fed between the drum 11 and the roller 6 by the guide oil 16. is,
The developed image on the surface side of the photosensitive drum 1 is sequentially transferred to the discharger section. After receiving the constant n, it is co-beated outside the machine by the first output roller pair 26 and discharged to the C27.
1L+11i1j - Cleaned by a cleaning device 7 and used repeatedly for 17 image formations.

The photosensitive drum II, the corona hk li device 3, and the photosensitive drum 5 cleaning device 7 are assembled in a predetermined positional relationship to the 1/-mm 28, which is common to the entire cartridge body A of the device. The cartridge body A can be inserted into the copying machine by opening the front door (not shown) of the copying machine, or can be pulled out and removed from the copying machine. Curtly.

When cartridge A is fully inserted into the copying machine by 1Φ, the equipment on the cartridge body A side is mechanically and electrically connected to the machine side, and the drive mechanism and power supply circuit on the machine side are connected. Mechanical driving and power supply of the equipment on the cartridge body A side becomes possible.

Thus, the cartridge body A has been used for a predetermined total number of copies (for example, 2000 copies, etc.) determined by the practical life of the incorporated photosensitive drum 11, the amount of developer stored in the developing device 5, etc. After that, a new cartridge body A is inserted into the copying machine and used.

In addition, several types of cartridge bodies A with different colors of developer stored in the developing device 5 are prepared, and the cartridge body A containing the developer of the desired color is replaced and installed in the main body of the copying machine. and use it.

As described above, the developing device 5 incorporated in the cartridge body A supplies the magnetic particles 20 and the non-magnetic developer 24 to the -L opening of the developer supply container 14 in the first and second storage chambers 41 and 42, respectively. A storage container 40 is attached thereto. The product is shipped from the manufacturer in its sealed state. Therefore, the magnetic particles 20 due to the vibration φ rocking etc.
and the non-magnetic developer 24 will not mix with each other or be scattered.

Then, in the user's side, the IM primary unsealing operation of the first and second seal members 40 and 49 is performed in the manner described above.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view of the essential parts of an example of a developing device, and Fig. 2 is an arrangement attitude angle 1 of the developing sleeve and magnetic blade of the device.
■Explanatory diagram, Figure 3 shows magnetic particles/No. 1 Magnetic developer input 1)
4 is the same view after loading, FIG. 5 is an exploded perspective view of the bottom plate of the storage container and the sealing member, and FIG. 6 is a bottom view of the bottom plate of the storage container after sealing. Fig. 7 is a perspective view of the handle l removed, Fig. 8 is a perspective view of the fitted state, Fig. 9 is a vertical side view of the fitted state, and Fig. 10 is a developing device to which the present invention is applied. FIG. 1 is a vertical sectional IE view showing a schematic configuration of an example of a copying machine incorporating the device. 5 is a developing device, 14 is a developer IJI supply VF device, and 40 is a storage container for magnetic particles and non-magnetic developer. Figure 2 Figure 1

Claims (2)

[Claims] (1) A developer storage container that independently has a first developer storage section and a second developer storage section, and first and second seal members that respectively cover the openings of the respective storage sections. A developing device characterized by having the following. (2) a developer storage container having a first developer storage section and a wS2 developer storage section independently; and first and ff12 seal members each covering an opening part of each of the storage sections; , a handle member fixed to one end of the first seal member, and means for attaching the handle member to the developer storage container or the developing device main body, and when the handle member is attached, a second seal member is attached. A developing device characterized in that an end portion of the sealing member can be stored inside the handle member.