JP5638434B2 - Developer storage container and image forming apparatus - Google Patents

Description

  The present invention relates to a developer storage container that stores a developer, and in particular, a developer storage container that discharges a developer stored by being rotated, a developer replenishing device including the developer storage container, and The present invention relates to an image forming apparatus provided with the developer supply device.

  In an electrophotographic image forming apparatus, a developing device visualizes an electrostatic latent image formed on the surface of a photoreceptor with toner (developer). The toner used for developing the electrostatic latent image is stored in a toner container, and the toner is sequentially supplied from the toner container to the developing device.

  Since an image forming apparatus that operates at high speed consumes a large amount of toner, a toner container having a large capacity is used. Under such circumstances, in recent years, a toner cartridge that supplies toner to a developing device by rotating a toner container is known. Many of such rotating toner containers are formed in a hollow cylindrical shape, and one end of the cylinder is closed and a discharge port is provided near the other end. Hereinafter, this toner container is referred to as a toner bottle.

  The toner cartridge including the toner bottle is disposed so that the rotation axis of the toner bottle is horizontal when the toner cartridge is attached to the image forming apparatus. Furthermore, some toner bottles are provided with spiral protrusions on the inner peripheral surface. When the toner bottle is driven to rotate about the rotation shaft, the projecting portion provided on the inner peripheral surface conveys the toner while guiding the toner toward the discharge port, and the toner is discharged from the discharge port.

  Further, in a toner cartridge equipped with such a toner bottle, a toner that regulates the upper limit of the amount of toner discharged from the toner bottle near the toner bottle outlet and discharges a fixed amount of toner to the outside of the toner cartridge. A replenishment unit is provided. A conventional toner cartridge provided with such a toner replenishing portion is shown in FIG. FIG. 9 shows a conventional toner bottle 20 provided in the conventional toner cartridge 101 shown in FIG. In the toner bottle 20 shown in FIG. 9, the toner bottle discharge port 30 is provided near the outer periphery of the toner bottle on the end surface 29 of the toner bottle 20. As shown in FIG. 8, the toner cartridge 101 including the toner bottle 20 has a toner replenishment unit 3 that controls the amount of toner discharged from the toner bottle 20 above the vicinity of the toner bottle outlet 30. A discharge position regulation screen 6 is provided. The toner discharge position regulating screen 6 discharges toner from the supply unit discharge port 5 of the toner supply unit 3 when the toner bottle discharge port 30 is below the toner cartridge 101. On the contrary, when the toner bottle discharge port 30 is above the toner cartridge 101, the backflow of the toner discharged from the toner bottle 20 to the toner supply unit 3 is blocked.

  Thus, when the toner discharge position regulating screen 6 is provided, when the amount of toner in the toner bottle 2 is large, the toner in the toner bottle 20 blocks the toner bottle discharge port 30 from the inside, and the toner bottle 20 Prevent inflow of outside air into Therefore, the pressure in the toner bottle 20 does not drop. For this reason, the toner is prevented from being discharged from the toner bottle 20, and the amount of discharged toner is reduced.

JP 2007-102135 A

  However, the above conventional technique cannot stably discharge a large amount of toner from the toner cartridge. In particular, a large amount of toner cannot be stably discharged at the beginning of rotation (when rising) or at the end of rotation (when falling) of the toner bottle.

  For this reason, when a conventional toner cartridge is used in an image forming apparatus that operates at a high speed, the amount of toner replenished to the developing device is insufficient, causing problems such as an image abnormality and a long standby time for toner replenishment.

  Also, if the rotation speed of the toner bottle is increased in order to increase the amount of toner replenishment, the cost increases for securing the driving force, and problems such as wear of the rubbing portion of the toner bottle and heat generation due to friction may occur. To do.

  Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a developer storage container capable of stably supplying a large amount of a constant amount of developer, and the developer storage. An object of the present invention is to provide an image forming apparatus provided with a container.

  In order to solve the above-described problems, the developer storage container according to the present invention has a cylindrical shape and is driven to rotate around an axis so that the developer stored therein is conveyed and discharged from the first discharge port. A developer container that surrounds the first discharge port, temporarily stores the developer discharged from the first discharge port, a second discharge port that discharges the developer to the outside, And a developer replenishment unit that supports the developer container so as to be rotatable about the axis, and includes a developer unit that conveys the developer from the storage unit to the second discharge port. A developer storage container for discharging the agent to the outside through the first discharge port and the second discharge port, wherein the first discharge port is divided into a plurality of openings, and the plurality of openings In the axial direction with respect to the vertical plane of the axis at the end of the developer container. That the inclined surface inclined in the developer conveyance direction upstream side, is characterized by being formed.

  According to the above configuration, the first discharge port is divided into a plurality of openings, and the plurality of openings are developed in the axial direction with respect to the vertical surface of the developer container at the end of the developer container. It is formed on an inclined surface inclined toward the upstream side in the agent transport direction. Therefore, when a large amount of developer is contained in the developer container, when the developer container is rotated around the axis, the developer near the first discharge port divided into a plurality of openings by the inclined surface is removed. Stirs and becomes easy to flow. At the same time, a large amount of developer can be discharged from the developer container through the first discharge port divided into a plurality of openings provided on the inclined surface. Thus, with the above configuration, a large amount of developer is stabilized by a fixed amount as compared with the case where the first discharge port is provided at the end of the developer container on the vertical surface of the axis of the developer container. Can be discharged.

  Here, when the amount of air in the developer container increases in the process of decreasing the developer in the developer container, the developer container is rotated, so that the developer in the developer container is stirred together with air. Therefore, it tends to be in a state where the fluidity becomes extremely high (aerosol state). At that time, the developer discharge amount may be remarkably increased. However, according to the above configuration, since the first discharge port is divided into a plurality of openings, it is possible to suppress oversupply when the developer fluidity is high, and the developer fluidity. It is possible to prevent insufficient replenishment when is low.

  As described above, regardless of the amount of developer in the developer container, a large amount and a constant amount of developer can be stably discharged from the developer storage container.

  Further, in the developer container according to the present invention, in addition to the above configuration, the inclined surface has an angle of 20 degrees to 60 degrees with respect to a vertical plane of the axis, and is upstream of the developer conveyance direction on the axis. It is preferable to be inclined.

  According to the above configuration, since the inclined surface has an angle of 20 degrees to 60 degrees, a large amount of a constant stable amount of developer is appropriately discharged from the first discharge port divided into the plurality of openings. It becomes possible to do.

  In the developer container according to the present invention, in addition to the above-described configuration, the inclined surface includes a plurality of partial inclined surfaces that are continuous in the circumferential direction of the developer container, and the plurality of openings include the plurality of openings. Each may be formed on the partially inclined surface.

  According to the above configuration, the inclined surface is formed from a plurality of partial inclined surfaces that are continuous in the circumferential direction of the developer container, so that even if the opening area of the plurality of openings is widened, for example, a plurality of openings are provided by a seal tape. The part can be surely sealed (sealed) without a gap. Here, the seal (tape) is a member for sealing the first discharge portion so that the developer is not discharged from the developer container through the first discharge portion. The seal is removed when the developer container is used (after being mounted on the image forming apparatus). According to the above configuration, leakage of the developer from the developer container during transportation of the developer storage container can be reliably prevented.

  In the developer container according to the present invention, in addition to the above configuration, the developer replenishment section covers the first discharge port, the developer container is rotated, and the first discharge port is the developer container. A discharge amount regulation having a surface installed in parallel with the vertical surface of the axis provided with a passage port through which the developer from the developer container passes through the temporary storage portion when it comes to the lower part of the installation direction It is preferable to have a part.

  According to the above configuration, when the developer container is rotated by the discharge amount restricting portion and the first discharge port provided in the inclined surface comes to the lower part in the installation direction of the developer container and passes through the passage port, The developer is easily discharged in the direction of gravity from the provided first discharge port. The developer is discharged from the first discharge port to the developer supply unit through the passage port. Further, when the developer container is rotated and the first discharge port provided on the inclined surface comes to the upper side in the direction of installation of the developer container, the first discharge port provided on the inclined surface and the discharge amount regulating portion It becomes easy to draw outside air into the developer container through a gap between a plane installed in parallel with the vertical plane of the axis, and a large amount of developer can be discharged from the developer container.

  In the developer container according to the present invention, it is preferable that a plurality of convex portions protruding to the inside of the developer container are provided in an intermittent spiral shape on the inner peripheral surface of the developer container.

  According to the above configuration, the plurality of convex portions protruding to the inside of the developer container are provided in an intermittent spiral shape on the inner peripheral surface of the developer container. Therefore, when the developer container is rotationally driven around the axis, the developer accommodated therein can be conveyed to the first discharge port while being appropriately stirred by the plurality of convex portions.

  Further, in order to solve the above problems, the image forming apparatus according to the present invention is characterized in that the developer storage container described above is detachably mounted.

  According to the above configuration, since the developer storage container described above is detachably mounted, it is possible to always perform development by supplying an appropriate amount of developer. Accordingly, the developer can be replenished accurately, and an image can be formed while maintaining the quality of image quality. Further, it is possible to prevent the image forming apparatus from becoming large and increasing in cost.

  Since the developer storage container includes a developer replenishment unit, the developer storage container can be employed in an image forming apparatus that does not include a developer replenishment device between the developer storage container and the developing device.

  In the developer storage container of the present invention, as described above, the first discharge port is divided into a plurality of openings, and the plurality of openings are perpendicular to the axis of the end of the developer container. It is formed on an inclined surface inclined to the upstream side in the developer conveying direction in the axial direction with respect to the surface.

  According to the above configuration, when a large amount of developer is contained in the developer container, when the developer container is rotated around the axis, the vicinity of the first discharge port divided into the plurality of openings is formed by the inclined surface. The developer is stirred and becomes easy to flow. At the same time, a large amount of developer can be discharged from the developer container through the first discharge port divided into a plurality of openings provided on the inclined surface. Thus, with the above configuration, a large amount of developer is stabilized by a fixed amount as compared with the case where the first discharge port is provided at the end of the developer container on the vertical surface of the axis of the developer container. Can be discharged.

  According to the above configuration, since the first discharge port is divided into a plurality of openings, oversupply when the developer fluidity is high can be suppressed, and replenishment when the developer fluidity is low. Insufficiency can be prevented.

  As described above, regardless of the amount of developer in the developer container, a large amount and a constant amount of developer can be stably discharged from the developer storage container.

FIG. 3 is a cross-sectional view illustrating a configuration around a toner replenishing portion of a toner cartridge according to an exemplary embodiment of the present invention. 1 is an explanatory diagram showing the overall configuration of an image forming apparatus equipped with a toner cartridge according to an embodiment of the present invention. FIG. 3 is a perspective view illustrating a configuration of a toner cartridge according to an exemplary embodiment of the present invention. FIG. 3 is an exploded perspective view illustrating a configuration of a toner cartridge according to an exemplary embodiment of the present invention. FIG. 4 is a perspective view of the vicinity of a discharge port of a toner bottle of a toner cartridge according to an exemplary embodiment of the present invention. FIG. 6 is a perspective view showing a shape of a toner discharge position regulating partition provided in a toner replenishing portion of the toner cartridge according to the embodiment of the present invention. FIG. 4 is a cross-sectional perspective view illustrating an internal structure around a discharge port included in a toner replenishing portion of the toner cartridge according to the embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating a configuration around a toner replenishing portion of a conventional toner cartridge. FIG. 6 is a perspective view of the vicinity of a first discharge port of a toner bottle of a conventional toner cartridge.

Embodiment
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 is an example of an embodiment for carrying out the present invention, and is an explanatory diagram showing an overall configuration of an image forming apparatus according to the present invention in which a toner cartridge (developer storage container) according to the present invention to be described later is used. . The image forming apparatus according to the present invention will be described using the copying machine shown in FIG. 2 as an example. However, the image forming apparatus according to the present invention is not limited to this, and an image of a printer, a facsimile machine, a copying machine, or the like. Any device that performs the formation may be used. In other words, any device that can detachably mount a toner cartridge according to the present invention, which will be described later, and performs image formation may be used.

  As shown in FIG. 2, the image forming apparatus 100 includes a document reading unit (scanner device) 43, an image forming unit 40, an electrophotographic process unit 60, and a sheet supply unit 50.

  The document reading unit 43 is arranged on the upper part of the image forming apparatus 100, reads a document, and creates image data.

  The image forming unit 40 is provided below the document reading unit 43 and includes a photoconductor 44, a charging device 45, and an exposure unit 46.

  The photosensitive member 44 is a substantially cylindrical electrostatic latent image carrier and is rotatably installed. An electrostatic latent image is formed on the surface of the photoconductor 44 according to image data created by the document reading unit 43 or image data transmitted from the outside via a communication network or the like.

  The charging device 45 is a device that uniformly charges the surface of the photoconductor 44 to a predetermined potential. As the charging device 45, a contact roller type charger, a contact brush type charger, a non-contact charger type charger, or the like can be used.

  The exposure unit 46 includes a laser beam scanner, and exposes the photoconductor 44 charged by the charging device 45 according to the image data, thereby forming an electrostatic latent image according to the image data on the surface of the photoconductor 44. .

  Further, a cleaning unit 49 for removing toner remaining on the surface of the photoconductor 44 is provided around the photoconductor 44.

  The electrophotographic process unit 60 includes a developing device 47, a transfer unit 48, and a fixing unit 51.

  The developing device 47 is a device that supplies toner (developer) to the surface of the photoreceptor 44 on which the electrostatic latent image is formed, and develops the electrostatic latent image into a toner image.

  Above the developing device 47, a toner replenishing device 10 including a toner cartridge 1 that contains toner and a toner hopper 13 is provided. The toner hopper 13 is supplied with toner from the toner cartridge 1. Details of the toner cartridge 1 will be described later.

  The transfer unit 48 transfers the toner image of the photoconductor 44 developed by the developing device 47 onto a sheet (recording paper, recording material) conveyed from the sheet supply unit 50.

  The fixing unit 51 fixes the image on the sheet on which the toner image is formed. The paper on which the toner image is fixed is discharged onto a paper discharge tray.

  Next, the toner cartridge (developer storage container) 1 of the present embodiment will be described. As shown in FIGS. 3 and 4, the toner cartridge 1 includes a cylindrical toner bottle (developer container) 2 and a toner replenishment section (developer replenishment section) 3.

  The toner bottle 2 includes a bottomed cylindrical toner storage portion 21 that stores toner (developer) for replenishment, and a toner bottle discharge port (first discharge port) 31 that discharges toner in the toner storage portion 21. I have. The toner bottle 2 is driven to rotate about the axis L <b> 1, thereby conveying the developer stored in the toner storage unit 21 and discharging it from the toner bottle discharge port 31.

  The toner replenishing unit 3 includes a toner replenishing unit outer wall (temporary storage unit) 3 a that surrounds the periphery of the toner bottle discharge port 31 and temporarily stores the developer discharged from the toner bottle discharge port 31. The developer discharged from the toner bottle discharge port 31 is temporarily stored in the toner supply portion outer wall 3a. Further, the toner replenishing unit 3 includes a toner conveying member 9 that conveys toner from the inside of the toner replenishing unit outer wall 3a to the replenishing unit discharge port 5, and a replenishing unit discharge port 5 that discharges the toner to the outside. . The toner replenishing unit 3 surrounds a part of the toner bottle 2 including the toner bottle discharge port 31 over the entire circumference of the outer peripheral surface, and supports the toner bottle 2 so as to be rotatable about an axis (center axis) L1.

  By rotating the toner bottle 2, the toner in the toner container 21 is discharged from the toner bottle discharge port 31 to the toner supply unit 3, and from the toner supply unit 3 through the supply unit discharge port 5 of the toner cartridge 1. It is discharged outside.

  As shown in FIGS. 3 and 4, the toner bottle 2 is provided with a toner guide protrusion 4 that is a plurality of convex portions protruding to the inside of the toner storage portion 21. The toner guide protrusion 4 is formed in a spiral shape that is divided (interrupted) corresponding to the rotation direction of the toner bottle 2. As a result, the toner bottle 2 rotates around the axis L 1, so that the toner in the toner container 21 is conveyed (guided) along the toner guide protrusion 4 toward the toner bottle discharge port 31.

  In addition, a stirring base 2b including a drive connection recess 2a is provided in a cylindrical shape at the end (tip) of the toner bottle 2 on the downstream side in the toner conveyance direction in the direction of the axis L1. As shown in FIG. 4, the stirring base 2 b is formed in a cylindrical shape having a diameter smaller than that of the toner containing portion 21. The toner bottle 2 is connected to the main body of the image forming apparatus 100 by the drive connection recess 2 a and receives a rotational driving force transmitted from the image forming apparatus 100.

  The shape around the toner bottle outlet 31 will be described in more detail. As shown in FIG. 5, the toner bottle outlet 31 is divided into a first opening 31a and a second opening 31b. In the present embodiment, the toner bottle discharge port 31 is divided into two openings, but may be divided into three or more. In FIG. 5, the first opening 31 a and the second opening 31 b are different in size and shape, but may be the same. The toner in the toner container 21 is discharged from the toner bottle discharge port 31 divided into the first opening 31 a and the second opening 31 b to the toner supply unit 3.

  Here, the area of the toner bottle discharge port 31 is determined by the discharge amount (discharge speed) at a predetermined rotation speed when a constant amount (for example, full) of developer is stored in the toner bottle 2. For this reason, the area of the opening 31a plus the area of the second opening 31b (the total area of the partial openings) may be equal to the area of the toner bottle outlet 31 determined above.

  Further, the first opening 31a and the second opening 31b are inclined at an angle θ toward the upstream side in the developer conveyance direction in the direction of the axis L1 with respect to the vertical surface of the axis L1 of the toner bottle 2 at the end of the toner bottle 2. The surface 32 is provided. The inclined surface 32 includes a first inclined plane 32 a and a second inclined plane 32 b that are a plurality of partial inclined surfaces that are continuous in the circumferential direction of the toner bottle 2. Here, as shown in FIG. 5, the angle inside the toner bottle formed by the first inclined plane 32 a and the second inclined plane 32 b is less than 180. This angle formed by the first inclined plane 32a and the second inclined plane 32b is passively determined from the width (length in the circumferential direction) of the first opening 31a and the second opening 31b. That is, the line of intersection between the first inclined plane 32 a and the second inclined plane 32 b protrudes toward the outer peripheral surface side of the toner bottle 2.

  The first opening 31a and the second opening 31b are formed in the first inclined plane 32a and the second inclined plane 32b, respectively. Thus, in this embodiment, although there are two continuous partial inclined surfaces, three or more may be sufficient. One or more openings may be provided on one partial inclined surface.

  Here, in the conventional toner cartridge 101, as shown in FIG. 8, the toner bottle discharge port 31 is provided at the end of the toner bottle 20 on a surface parallel to the vertical surface of the rotation axis (axis line L1) of the toner bottle 20. It has been. Then, the toner in the toner storage unit 21 is discharged to the toner supply unit 3. The shape around the toner bottle outlet 30 of the conventional toner cartridge 101 is as shown in FIG.

  In the toner cartridge 1 of the present embodiment, as described above, the toner bottle discharge port 31 is divided into the first opening 31a and the second opening 31b, and the first opening 31a and the second opening 31b are It is formed on the inclined surface 32 at the end of the toner bottle 2. The inclined surface 32 is inclined by an angle θ with respect to the vertical surface of the axis L1 of the toner bottle 2 on the upstream side in the developer conveyance direction in the axial direction.

  Therefore, when a large amount of toner is contained in the toner bottle 2, when the toner bottle 2 is rotated around the axis L1, the toner divided into the first opening 31a and the second opening 31b by the inclined surface 32. The toner in the vicinity of the bottle outlet 31 is agitated and easily flows. At the same time, a large amount of toner can be discharged from the toner bottle 2 from the toner bottle discharge port 31 provided on the inclined surface 32 and divided into the first opening 31a and the second opening 31b. Because of such a configuration, like the conventional toner cartridge 101, the toner bottle discharge port 31 is provided on a surface 29 parallel to the vertical surface of the axis L1 of the toner bottle 20 at the end of the toner bottle 20. Compared to the case, a large amount of toner can be discharged stably.

  Here, in the process in which the toner in the toner bottle 2 is decreasing, if the amount of air in the toner bottle 2 increases, the toner bottle 2 is rotated. It tends to be in a state (aerosol state) where the property is extremely high. At that time, the amount of toner discharged may increase remarkably (toner avalanche). However, since the toner bottle discharge port 31 is divided into a plurality of (two in this embodiment) openings, it is possible to suppress oversupply when the toner fluidity is high, and the developer flow Insufficient replenishment when the property is low can be prevented.

  As described above, in the toner cartridge 1 of the present embodiment, it is possible to stably discharge a large amount and a constant amount of toner from the toner cartridge 1 to the outside regardless of the amount of toner in the toner storage unit 21. In addition, since the toner cartridge 1 includes the toner replenishing section 3 that surrounds the periphery of the toner bottle discharge port 31, an increase in size and cost of the image forming apparatus 100 can be prevented.

  In the toner cartridge 1, the angle θ of the inclined surface 32 is preferably in the range of 20 degrees to 60 degrees. Since the inclined surface 32 has an angle of 20 degrees to 60 degrees, it is possible to appropriately discharge a large amount and a constant amount of toner from the toner bottle discharge port 30 appropriately. Further, it is preferable that the angle θ of the inclined surface 32 is larger as the image forming apparatus 100 is operated at higher speed.

  In the present embodiment, as described above, the inclined surface 32 includes the first inclined plane 32a and the second inclined plane 32b that are continuous in the circumferential direction of the toner bottle 2, and the first opening 31a and the second opening 31b. Are formed on the first inclined plane 32a and the second inclined plane 32b, respectively.

  As described above, the inclined surface 32 is formed of the first inclined plane 32a and the second inclined plane 32b that are continuous in the peripheral direction of the toner bottle 2, so that the opening of the first opening 31a and / or the second opening 31b is formed. Even if the area is increased, for example, the first opening 31a and the second opening 31b can be surely sealed (sealed) without a gap by a sealing tape.

  Here, the seal (tape) is a member for sealing the toner bottle outlet 31 so that the toner is not discharged from the toner bottle 2 through the toner bottle outlet 31. When the toner bottle 2 is used (after being attached to the image forming apparatus 100), this seal is removed. According to this configuration, it is possible to reliably prevent toner leakage from the toner bottle 2 when the toner cartridge 1 is transported.

  As shown in FIG. 4, the toner replenishing unit 3 is further provided with a toner discharge position regulating screen (discharge amount regulating unit) in addition to the toner conveying member 9, the toner replenishing unit outer wall 3 a and the replenishing unit discharge port (second discharge port) 5. 6). The toner replenishing unit 3 supports a part of the toner bottle 2 so as to wrap around a whole circumference of the outer peripheral surface.

  As shown in FIG. 6, the toner discharge position regulating partition 6 has a surface 6 a that covers the toner bottle discharge port 31 and is installed in parallel with the vertical surface of the axis L <b> 1. On the surface 6a, when the toner bottle 2 is rotated and the toner bottle discharge port 31 comes to the lower part of the toner bottle 2 in the installation direction (lower part of the toner cartridge 1), the toner from the toner bottle 2 is transferred to the toner replenishing unit 3. A notch (passage port) 6b is provided for passing through the temporary storage unit. Therefore, when the toner bottle 2 rotates and the toner bottle discharge port 31 passes through the notch 6b, the toner in the toner bottle 2 is discharged to the toner replenishing unit 3 and pumped up by a toner conveying blade 9b described later. The toner is prevented from flowing back from the toner supply unit 3 to the toner bottle 2. Therefore, the amount of toner discharged from the replenishing portion discharge port 5 to the outside of the toner cartridge 1 is stabilized.

  FIG. 7 shows a cut perspective view of the toner supply unit 3 at the supply unit discharge port 5. As shown in FIG. 7, the toner discharged from the toner bottle 2 to the toner replenishing unit 3 is transported to the replenishing unit discharge port 5 by the toner transporting member 9 that rotates in synchronization with the toner bottle 2, and To be discharged. The toner conveying member 9 includes a toner conveying blade 9b for agitating and conveying the toner.

  The toner discharge position regulating screen 6 provided with the notch 6b has the following effects. That is, when the toner bottle 2 is rotated and the toner bottle discharge port 31 provided on the inclined surface 32 comes to the lower side in the installation direction of the toner bottle 2 and passes through the notch 6b, the toner provided on the inclined surface 32 The toner is easily discharged from the bottle discharge port 31 in the direction of gravity. The toner is discharged from the toner bottle discharge port 31 to the toner supply unit 3 through the notch 6b. Further, when the toner bottle 2 is rotated and the toner bottle discharge port 31 provided on the inclined surface 32 comes to the upper part in the installation direction of the toner bottle 2, the following occurs. From the gap between the toner bottle discharge port 31 provided on the inclined surface 32 and the surface 6b installed parallel to the vertical surface of the axis L1 of the toner discharge position regulating partition 6, it becomes easy to draw outside air into the toner bottle 2. A large amount of toner can be discharged from the toner bottle 2.

  In the present embodiment, the example in which the toner cartridge 1 according to the present invention is applied to the image forming apparatus 100 as shown in FIG. 2 has been described. However, the image forming apparatus is limited to the image forming apparatus and the copying machine having the above-described configuration as long as the image forming apparatus has a toner cartridge or a developing device or is provided so as to be mountable and needs to be replenished with developer (toner). However, the present invention can be applied to other image forming apparatuses.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. That is, embodiments obtained by combining technical means appropriately changed within the scope not departing from the gist of the present invention are also included in the technical scope of the present invention.

  The present invention can be applied to a toner cartridge used in an electrophotographic image forming apparatus, for example, a printer, a copier, a facsimile, a multi function printer (MFP), and the like.

1 Toner cartridge (developer storage container)
2 Toner bottle (developer container)
2a Drive connection recess 3 Toner supply part (developer supply part)
3a Toner supply part outer wall 4 Toner guide protrusion (convex part)
5 Supply port outlet (second outlet)
6 Toner discharge position control screen (Discharge amount control section)
6a Surface 6b Notch (passage port)
DESCRIPTION OF SYMBOLS 9 Toner conveyance member 9b Toner conveyance blade 10 Toner replenishing device 20 Conventional toner bottle 21 Toner container 29 End surface of conventional toner bottle 30 Conventional toner bottle discharge port 31 Toner bottle discharge port (first discharge port)
31a First opening (opening)
31b Second opening (opening)
32 Inclined surface 32a First inclined plane (partial inclined surface)
32b Second inclined plane (partially inclined plane)
47 Developing Device 100 Image Forming Device 101 Conventional Toner Cartridge

Claims (6)

A developer container that has a cylindrical shape and is driven to rotate around an axis to convey the developer contained therein and discharge the developer from the first discharge port;
A temporary storage portion that surrounds the periphery of the first discharge port and temporarily stores the developer discharged from the first discharge port, a second discharge port that discharges the developer to the outside, and a second discharge port from the temporary storage portion. A developer unit that conveys the developer to the outlet, and a developer replenishment unit that rotatably supports the developer container around the axis,
A developer storage container for discharging the developer in the developer container to the outside via the first discharge port and the second discharge port;
The first discharge port is divided into a plurality of openings,
The plurality of openings are inclined surfaces in which a part of the cylindrical shape of the end portion of the developer container is inclined, and the inclined surface is inclined to the upstream side in the developer conveying direction in the axial direction with respect to the vertical surface of the axis. Formed ,
The developer container is characterized in that the end portion of the developer container is formed in a cylindrical shape except for the inclined surface .   2. The developer according to claim 1, wherein the inclined surface has an angle of 20 degrees to 60 degrees with respect to a vertical plane of the axis, and is inclined upstream in the developer transport direction on the axis. Storage container. A developer container that has a cylindrical shape and is driven to rotate around an axis to convey the developer contained therein and discharge the developer from the first discharge port;
A temporary storage portion that surrounds the periphery of the first discharge port and temporarily stores the developer discharged from the first discharge port, a second discharge port that discharges the developer to the outside, and a second discharge port from the temporary storage portion. A developer unit that conveys the developer to the outlet, and a developer replenishment unit that rotatably supports the developer container around the axis,
A developer storage container for discharging the developer in the developer container to the outside via the first discharge port and the second discharge port;
The first discharge port is divided into a plurality of openings,
The plurality of openings are formed on an inclined surface inclined toward the upstream side in the developer conveying direction in the axial direction with respect to a vertical surface of the axial line of the developer container end,
The inclined surface is composed of a plurality of partial inclined surfaces that are continuous in the circumferential direction of the developer container,
Wherein the plurality of openings, the developer accommodating container you characterized by being formed respectively on the plurality of portions inclined surfaces. A developer container that has a cylindrical shape and is driven to rotate around an axis to convey the developer contained therein and discharge the developer from the first discharge port;
A temporary storage portion that surrounds the periphery of the first discharge port and temporarily stores the developer discharged from the first discharge port, a second discharge port that discharges the developer to the outside, and a second discharge port from the temporary storage portion. A developer unit that conveys the developer to the outlet, and a developer replenishment unit that rotatably supports the developer container around the axis,
A developer storage container for discharging the developer in the developer container to the outside via the first discharge port and the second discharge port;
The first discharge port is divided into a plurality of openings,
The plurality of openings are formed on an inclined surface inclined toward the upstream side in the developer conveying direction in the axial direction with respect to a vertical surface of the axial line of the developer container end,
The developer replenishing section covers the first discharge port, the developer container is rotated, and when the first discharge port comes to the lower part in the installation direction of the developer container, development from the developer container is performed. agent passage port for passing to the temporary storage section is provided, the axis vertical plane parallel to installed the emissions that you characterized that includes a restriction portion developer container having the face of.   5. The projection according to claim 1, wherein a plurality of convex portions protruding to the inside of the developer container are provided in an intermittent spiral shape on the inner peripheral surface of the developer container. Developer container.   An image forming apparatus, wherein the developer container according to claim 1 is detachably mounted.

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