JP4570895B2 - Toner supply container and process cartridge - Google Patents

Description

  The present invention relates to a toner replenishing container, a toner replenishing device, a process cartridge, a developing cartridge, and an image forming apparatus that can be attached to and detached from an image forming apparatus main body.

Conventionally, fine powder toner is used as a developer in an image forming apparatus such as a copying machine or a printer. When the developer is consumed, a toner replenishing container is used to supply toner to the image forming apparatus main body. Replenishment is performed.
During toner replenishment work, in order to prevent toner scattering, it is common to set a toner replenishment container inside the image forming apparatus main body and discharge the toner little by little for replenishment.
In such a system, since it is difficult to discharge the toner naturally by gravity or the like, a toner conveying unit is required.

  As a toner replenishing container having such a toner conveying means, for example, Patent Document 1 has an overall shape of a substantially cylindrical shape, and a relatively small toner discharge opening is provided on a part of the outer peripheral surface thereof. A supply container is described. In this system, a spiral toner conveying member is provided inside the container, and is driven from the outside of the container through the end wall surface of the container. The toner replenishing container conveys the toner by rotating the toner conveying member when driven from the image forming apparatus main body, and discharges the toner from the opening.

  As another toner conveying means, Patent Document 2 describes a toner replenishing container in which a spiral protrusion is provided on the inner surface of a cylindrical bottle-shaped toner replenishing container, and a toner discharge port is provided near the center on one end side. . Unlike the patent document 1, this toner supply container is configured to convey toner by receiving a drive from the apparatus main body side and rotating the container main body itself.

Each of the toner replenishing containers described above is configured to discharge toner by receiving driving from the image forming apparatus main body side and driving the conveying member of the toner replenishing container and the container main body.
As a drive transmission system, for example, there is a system in which a gear portion is provided on the outer peripheral surface of the toner replenishing container, and a rotating drive gear connected to a drive source is engaged with the gear to be driven to rotate.
Further, there is a system in which a driving for rotation is provided on the end surface of the toner replenishing container, and the driving is transmitted by engaging the protrusion with a recess provided in a driving unit from the main body of the image forming apparatus.

However, the conventional drive transmission means has several problems.
Conventionally, when a toner replenishing container is inserted and set in the main body of the image forming apparatus, the gear part provided on the outer peripheral surface of the replenishing container and the drive gear part in the main body of the image forming apparatus need to be meshed with each other. For this reason, it was a burden on the user during the replenishment operation.
When the toner replenishing container is rotated by gear driving, it is necessary to support the periphery of the toner replenishing container in order to prevent the toner replenishing container from being lifted or laterally displaced. There have been problems such as complicated attachment and detachment operations and complicated construction of the replenishment system itself.

  In addition, in the method of engaging the protrusion on the end surface of the toner replenishing container with the recess of the drive unit of the apparatus main body during toner replenishment, alignment in the rotational direction is required when inserting the toner replenishing container, and the replenishment operability is reduced There were problems such as the occurrence of drive transmission failure due to slight misalignment.

  In order to prevent such an engagement failure, it is necessary to provide a guide on the outer surface of the toner supply container, or to control the engagement portion of the main body drive unit so as to always stop at a predetermined rotational position. Yes, it was a factor in increasing the complexity and cost of the replenishment system.

  In addition, when the phase of the toner supply container and the main body drive unit is shifted, the main body drive unit is retracted by a spring. The configuration of the drive unit has become complicated, and this has also been a problem from the viewpoint of downsizing the apparatus body. In addition, when bidirectional rotation is required, the conventional drive transmission means may generate noise due to the presence of backlash when starting rotation or changing the rotation direction.

Patent Document 3 describes the drive transmission between the image forming apparatus main body side and the toner replenishing container and the toner replenishing method. However, the present invention also relates to the above-described method, and more reliable and reliable engagement. Is possible.
Japanese Patent Publication No. 07-113796 Japanese Patent Application Laid-Open No. 07-044000 JP 2003-021953 A

The present invention has been made in view of the above problems, and an object of the present invention is to provide a toner replenishing container that does not require alignment in the rotational direction of the toner replenishing container at the time of replenishment operation and can be reliably set with a simple operation.
It is another object of the present invention to provide a toner replenishing container having a simple mechanism that can be made inexpensive and a process cartridge, a developing cartridge, and an image forming apparatus having a drive transmission unit that can make the image forming apparatus main body compact. To do.

As means for solving the above problems, the present invention has the following features.
In the toner supply container according to the present invention, in the toner supply container that is detachable from the image forming apparatus main body and receives the driving force from the driving unit of the image forming apparatus main body, the surface that receives the driving force from the driving unit is formed of an engagement-shaped member. The engagement shape is a plurality of holes arranged radially, and a convex member is provided at the tip of the driving unit, and the convex member is formed by cutting and raising, and a plurality of radially arranged A convex member that is formed of a cone or a protrusion and is inclined in a circumferential direction in a direction to engage with the engaging member when the plurality of cones or protrusions rotate in a rotation direction in which toner can be discharged. The toner replenishing device receives a driving force from the driving unit when the member engages with the engagement-shaped member.
In the toner replenishing container of the present invention, the toner replenishing container further includes a container main body that stores the toner therein, and the toner stored inside the toner replenishing container by rotating the container main body by a driving force from the driving unit. A mechanism for stirring, transporting, and discharging is provided.
The toner supply container of the present invention is further characterized in that the toner supply container has a substantially cylindrical shape.
The toner supply container according to the present invention is further characterized in that an opening for discharging the toner is provided at one end of the cylinder, and a sealing member for opening and closing the opening is provided at the opening.

In the toner replenishing container of the present invention, the sealing member is further provided with the engagement-shaped member at the distal end portion on the side receiving the driving force, and the container body and the sealing member rotate in the toner discharge rotation direction. Are engaged with each other and disengaged when rotating in a rotational direction in which the toner is not discharged, and even when the opening is open, the toner supply container is locked in the rotational direction. it characterized by keeping the state.

The toner supply container of the present invention further includes an opening for discharging the toner at one end of the cylinder, and a sealing member for opening and closing the opening at the opening. An engagement-shaped member is provided .

In the process cartridge of the present invention, in the process cartridge that is detachable from the image forming apparatus main body, the photosensitive member, the process means that acts on the photosensitive member, and the driving force for receiving the driving force from the driving unit of the image forming apparatus main body. And a drive transmission portion from the drive portion to the drive force receiving member is configured by a combination of an engagement-shaped member and a convex portion, and the drive force receiving member is the engagement-shaped member or the convex portion. The engagement shape is a plurality of holes arranged radially, and the convex part is formed by cutting and raising , and is composed of a plurality of cones or protrusions arranged radially. .

In the process cartridge of the present invention, the process cartridge is a cartridge in which a charging unit, a developing unit, or a cleaning unit as a process unit and a photosensitive member are integrally formed, and can be attached to and detached from the image forming apparatus main body. It is characterized by being.

In the developing cartridge of the present invention, in the developing cartridge that is detachable from the image forming apparatus main body, the developing member that develops the electrostatic latent image formed on the photoreceptor using the developer and the developer that is supplied to the developing member are stored. a developer container for has a driving force receiving member for receiving the transmission of the driving force from the driving unit of the image forming apparatus main body, a surface receiving the driving force from the driving unit is comprised of a member of the engagement shape The engagement shape is a plurality of holes arranged radially, and the member having the engagement shape is engaged with the drive unit by the operation of receiving the drive force from at least the drive unit, and receives the drive force. is configured, the driving force receiving member have a convex portion, convex portion is formed by cut-and-raised working, it characterized by comprising a plurality of tapered or projections arranged radially.

In the image forming apparatus of the present invention, the drive in an image forming apparatus for forming an image on a possible recording medium detachable to profile processes cartridge, a photosensitive member, and process means acting on the photosensitive member, the driving unit of the image forming apparatus main body A driving force receiving member for receiving force transmission, and the drive transmitting portion of the driving force receiving member from the driving portion is configured by a combination of an engagement shape member and a convex portion, and the engagement shape is A plurality of holes arranged radially; the convex portion is formed by cutting and raising, and includes a plurality of radially arranged cones or protrusions; and the driving force receiving member is the engagement-shaped member or convex A mounting means for detachably mounting a process cartridge having a portion, a driving portion for transmitting a driving force to a driving force receiving member, and an operation for receiving a drive from the driving portion to engage with the driving portion. And formed, characterized by chromatic and a conveying means for conveying the recording medium.

In the image forming apparatus of the present invention, in the image forming apparatus in which the developing cartridge is detachable and forms an image on a recording medium, a developing member that develops the electrostatic latent image formed on the photoreceptor using a developer, and the developing member A developer container for storing a developer to be supplied to the image forming apparatus, and a driving force receiving member for receiving a driving force from the driving unit of the image forming apparatus main body, and the driving transmission of the driving force receiving member from the driving unit. The portion is constituted by a combination of an engagement-shaped member and a convex portion, and the engagement shape is a plurality of holes arranged radially, and the convex portions are formed by cutting and raising, and are arranged radially. and a plurality of cones or protrusions, the driving force receiving member includes a mounting means for mounting detachably a developer cartridge having a member or protrusions of the engagement shape, driving unit for transmitting a driving force to the force receiving member Characterized and configured for engagement with the driver by the operation receiving a driving force from the driving portion, and conveyance means for conveying the recording medium, to have a.

  As described above, according to the means for solving the above problem, in the present invention, the toner transmission container, the toner supply device, the process cartridge, and the image forming device having the effects of space saving, compactness, low cost, and soundproofing of the drive transmission unit are provided. And a sealing member can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description is an example of the best mode of the present invention, and does not limit the scope of the claims.
A toner supply container showing an example of an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a cross-sectional view showing the configuration of the drive transmission portion of the toner supply container.
The toner replenishing container 1 is formed in a substantially cylindrical shape, and has an opening 1a at the center of the end surface. When the sealing member 2 provided in the opening 1a slides in the axial direction of the toner supply container 1, the opening 1a is opened and closed. An elastic member 3 or an engagement-shaped member is provided at the distal end portion of the sealing member 2, and the elastic member 3 or the engagement-shaped member is provided in a drive unit 10 provided in the image forming apparatus main body. The convex member 17 is coupled to transmit the rotational drive to the toner supply container 1.

FIG. 2 is a perspective view of a toner supply container showing an example of an embodiment of the present invention.
The toner replenishing container 1 is disposed in a substantially horizontal direction in the image forming apparatus main body, and rotates upon receiving rotational driving from the apparatus main body 100. On the inner surface of the toner replenishing container 1, for example, a spiral protrusion 1c for stirring, transporting and discharging the toner is provided. As the toner supply container 1 rotates, the toner is transported in the axial direction along the spiral protrusion 1c and discharged from the opening 1a.

FIG. 3 is a cross-sectional view of the sealing member 2.
In FIG. 3, reference numeral 2 b denotes a sealing portion that seals the toner supply opening 1 a of the toner supply container 1. The outer diameter of the sealing portion 2b is set to be an appropriate amount larger than the inner diameter of the opening 1a. The toner replenishing opening 1a is sealed by press fitting the sealing part 2b into the opening 1a.
The sealing member 2 has an engagement hole 2a for engaging the drive shaft 1b and transmitting the drive force received from the apparatus main body 100 to the drive shaft 1b. The drive shaft 1b is a container body 1A. The engagement hole 2a has a shape corresponding to the cross-sectional shape of the drive shaft 1b and is slightly larger than the drive shaft 1b. The drive shaft 1b is loosely fitted in the engagement hole 2a. The toner supply container 1 and the sealing member 2 are locked to each other in the rotational direction of the toner supply container 1 and are movable relative to each other in the axial direction. Thus, when the toner replenishing container is mounted, the sealing member 2 and the toner replenishing container main body 1A can be separated from each other, and the toner supply port can be opened.

Even if the sealing member 2 is separated from the toner supply container 1, the engagement hole 2 a and the drive shaft 1 b have an engagement length that does not come off, and the drive shaft 1 b receives a driving force via the sealing member 2. Can do.
Further, the sealing member 2 has a restricting portion 2d. By inserting the main body side holding member 12 (see FIG. 19) into the restricting portion 2d, the main body side convex member 17 and the elastic member of the toner supply container 1 are provided. 3 or the engagement distance with the engagement-shaped member is maintained at a constant distance. Here, the restricting portion 2d is a circumferential groove provided in the sealing member 2, and the leading end of the holding member 12 enters and exits the restricting portion 2d. The main body side holding member 12 is also a part of an opening / closing mechanism for opening / closing the opening 1 a with the sealing member 2.

The structure of the elastic member 3, the engagement-shaped member, and the convex member 17 will be described with reference to FIG.
The elastic member 3 is provided at the tip of the sealing member 2 as shown in FIG. 4, and is moved to the surface of the drive transmission unit of the apparatus main body 100 by the movement of the toner supply container 1 to the apparatus main body 100 during the mounting operation. It engages with the provided convex member 17 and plays a role of transmitting driving from the apparatus main body 100 to the toner supply container 1 via the sealing member 2.
The elastic member 3 is provided at the distal end portion of the sealing member 2, but may be formed by integral molding, or may be joined by an adhesive, bolting, or the like.
As the material of the elastic member 3 NBR, CR, EPM, EPDM, silicone over Ngomu, foam of synthetic rubbers, and various elastomers can be employed.

Next, the engagement-shaped member will be described.
FIG. 5 shows an example of the engagement-shaped member and the convex member on the main body side.
The engagement-shaped member 20X is inclined in the circumferential direction in which the convex member 17X provided at the tip of the main body side drive unit 10 is engaged when a plurality of cones or protrusions rotate in a rotation direction in which toner can be discharged. In the case of a convex member, it is provided at the tip of the sealing member 2 as a mating counterpart. The operation and role are basically the same as those of the elastic member 3, but unlike the case where the elastic member 3 and the convex member 17 on the main body side are engaged, the engagement-shaped member 20X and the convex member 17X on the main body side In this engagement, when rotating in the toner discharge rotation direction, the protrusions of the protrusion member 17X are inserted into the openings of the member 20X and locked together, and when rotating in the rotation direction in which the toner is not discharged. It becomes the composition which goes wrong.

By adopting such an engagement method, it is possible to eliminate problems caused by the repulsive force of the elastic member 3 when the toner supply container is inserted, which may occur when the elastic member 3 and the convex member 17 on the main body side are engaged. That is, in this case, the toner supply container cannot be set at a predetermined axial position during insertion due to the repulsive force of the elastic member 3, and the main body side holding member 12 cannot be fitted into the restricting portion 2 d of the sealing member 2.
This is because in the engagement between the engagement-shaped member 20X and the convex member 17X on the main body side, a positional shift due to the repulsive force in the axial direction does not occur.
FIG. 6 shows an example of the engagement-shaped member 20Y and the convex member 17Y on the main body side.
In this example, the convex member 17Y on the main body side has a convex shape formed by cutting and raising a sheet metal or the like, so the engagement-shaped member 20Y has a position and shape opening as shown in FIG. Yes.
The operation, role, and effect of this example are the same as those of the engagement-shaped member 20X and the main body-side convex member 17X.

Next, the convex member 17 will be described.
As shown in FIG. 4, the convex member 17 is provided at the tip of the main body drive unit 10, engages with the elastic member 3 provided at the tip of the sealing member 2, and drives the device main body 100 to drive the sealing member 2. It plays the role of transmitting to the toner supply container 1 via the.
Any material may be used for the convex member 17 as long as it has sufficient rigidity to transmit the rotational driving force, but a material having high rigidity such as metal is more preferable.
The shape of the convex member 17 may be a cylindrical shape having a spherical tip or a convex surface as shown in FIG. Moreover, when the shape of the convex member 17 is a shape as shown, for example in FIG. 5, 6, the member of the other party engagement shape also becomes a corresponding shape as shown in FIG.
At this time, as shown in FIGS. 5 and 6, in order to further increase the engagement accuracy between the main body drive unit 10 and the mating member on the other side, as an engagement protrusion at the center of the main body side convex member 17 The center 17a may be provided, and the center 17a may be fitted into the elastic member 3 on the toner supply container 1 side or the center hole of the engagement-shaped member. Or, conversely, a center hole may be provided at the center of the main body side convex member 17 and a center may be provided at the toner supply container 1 side.
Further, as shown in FIG. 7, a combination of a woven fabric and a woven fabric (a so-called Velcro (registered trademark) ) in which a loop-shaped part is cut is used for the engaging portion on the main body side and the toner supply container side. Simple and reliable engagement is possible.

When the toner replenishing container 1 is attached to the apparatus main body 100, the convex member 17 is pushed against the elastic force of the elastic member 3, and the elastic member 3 undergoes compression deformation. Then, as shown in FIG. 8, the container main body 1 </ b> A is rotated by the driving force from the main body driving unit 10 in a state where the container main body 1 </ b> A is retracted in the illustrated arrow B direction, and the rotation is transmitted to the sealing member 2.
The elastic member 3 may be an elastic member capable of causing plastic deformation in the direction of the rotation axis along with the main body-side convex member 17, and includes various foam members, various elastomers, and various rubber members. Moreover, the combination of the elastic member 3 and the convex member is arbitrary, and the elastic member 3 may be on the apparatus main body side and the convex member 17 may be on the toner supply container side. However, it is considered that the durability of the apparatus main body 100 is higher when the elastic member 3 is provided in the toner supply container 1 and the convex member 17 is provided on the apparatus main body side.

Next, the replenishing operation of the toner replenishing container in the present invention will be described with reference to FIG.
FIG. 8 is a view showing a state in which the toner supply container 1 according to the present invention is inserted into the main body of the image forming apparatus and toner is supplied. In FIG. 8, m denotes a drive motor provided in the main body of the image forming apparatus, and rotates the drive unit 10 connected to the toner supply container side via the intermediate gear 11. The intermediate gear 11 is engaged with a pinion 11 a fixed to the shaft of the motor m and a gear 11 b fixed to the drive shaft 10 a of the drive unit 10. A main body-side convex member 17 for rotating the toner supply container is provided on the surface of the driving unit 10.

  In FIG. 8, after the sealing member 2 and the drive unit 10 are engaged by the toner supply container side elastic member 3 and the main body side convex member 17, the slide member 300 is moved in the direction of arrow B by closing the replacement cover of the toner supply container. By moving backward, the toner supply container 1 also moves backward, the sealing member 2 is relatively separated from the toner supply container 1 and the opening 1a is opened, and the toner can be supplied. At this time, the drive shaft 1 b of the toner supply container 1 is not completely detached from the sealing member 2, and a part of the drive shaft 1 b remains in the sealing member 2. The cross-sectional shape of the drive shaft 1b is a non-circular cross-section, such as a quadrangle or a triangle, which can transmit rotational drive.

By driving the motor m in this state, the rotational driving force is transmitted from the main body driving unit 10 to the sealing member 2 and further to the drive shaft 1b of the toner supply container, and the toner supply container main body 1A rotates. The sealing member 2 plays two roles of toner sealing and opening and transmission of the rotational driving force of the toner supply container 1. Further, since the toner replenishing container body 1A is rotatably supported by the replenishing container receiving roller 13, it can be rotated with a slight driving torque.
As described above, when the toner replenishing container 1 rotates, the toner contained in the container is sequentially discharged from the opening 1a, and the toner is replenished to the image forming apparatus main body side.

Next, the separation method will be described.
When the toner is completely discharged from the toner supply container and the toner supply container 1 is emptied, it must be replaced with a new toner supply container. At that time, it is necessary to separate the projecting member 17 from the sealing member 2 and the elastic member 3 provided in the drive unit 10 or the engaging member.
Regarding the separation of the main body side convex member 17 and the container side elastic member 3 or the engagement-shaped member, when the container side is the elastic member 3, the toner supply container 1 moves forward by the opening operation of the apparatus replacement cover, The opening 1a is resealed by the sealing member 2, and the elastic member 3 whose engagement distance is maintained constant by the holding member 12 when the holding member 12 is then retracted and removed from the restricting portion 2d. The convex member is detached, and the toner supply container 1 can be taken out.
Further, when the main body side is a convex member such as 17X and the container side is a member having an engagement shape such as 20X, the opening 1a is resealed by the sealing member 2 in the same manner as described above, and the holding member After 12 is retracted and removed from the restricting portion 2d, only the toner supply container 1 is manually rotated in the toner discharge rotation direction so that the toner supply container can be separated from the convex member 17 and taken out.

  The arrangement configuration of the elastic member 3 in the present invention is not limited to being provided at the tip of the sealing member 2 described above, and can be freely separated if it is a place where the toner supply container 1 can be transmitted. You may provide in several places. For example, it may be provided on the ring on the end surface of the toner supply container main body 1A, or may be provided separately, and the position where the elastic member 3 is freely arranged may be configured according to various toner supply container shapes.

As described above, according to the embodiment of the present invention, the following effects are exhibited.
When replacing the toner supply container as in the prior art, it is not necessary to align the rotational position of the toner supply container, and the toner supply container can be simply inserted into the apparatus main body and the cover of the apparatus main body is closed. Since it engages with the drive part of the apparatus main body and is in a replenishable state, the operability is improved.
An example in which the present invention is applied to a process cartridge as another embodiment will be described below.

First, a process cartridge according to an embodiment and an image forming apparatus to which the process cartridge can be mounted will be described in detail with reference to FIG. 9, FIG. 10, and FIG.
Here, an example of the overall configuration of the process cartridge, the developing cartridge, and the image forming apparatus used by mounting the process cartridge will first be described with reference to FIGS. 9 and 10, and then the process cartridge will be described with reference to FIG. The configuration of the elastic member and the convex member, which is the drive transmission configuration of the image forming apparatus main body, will be described.

FIG. 9 is a schematic configuration diagram of a process cartridge according to an embodiment of the present invention.
In FIG. 9, a photosensitive drum 7 as an image carrier is uniformly charged by a charging charger 120 as a uniform charging means while being driven to rotate in the direction of arrow A by a driving means (not shown) and then a laser. The optical device 130 is scanned and exposed based on the image information to form an electrostatic latent image on the surface. The electrostatic latent image formed on the photosensitive drum 7 is developed with the toner 103 as a developer by the developing device 140, thereby forming an image on the photosensitive drum 7. The image formed on the photoconductor 7 is transferred by a transfer charger 150 onto a transfer sheet (not shown) conveyed from a paper feed cassette or manual feed tray (not shown) to a transfer unit. After the transfer is completed, the image is fixed by a fixing device (not shown) and the transfer paper is discharged outside the apparatus. The toner on the photosensitive drum 7 that has not been transferred onto the transfer paper is removed from the photosensitive member 7 by the cleaning device 160.
In FIG. 9, the hatched portion 140 is an embodiment of the developing cartridge in which the developing means and the toner storage portion are integrated to be detachable from the image forming apparatus main body.

The image forming apparatus in FIG. 10 will be described.
In the figure, reference numeral 100 is an image forming apparatus main body, 200 is a paper feed table on which the image forming apparatus is mounted, 400 is a scanner mounted on the image forming apparatus main body 100, and 500 is an automatic document feeder (ADF) mounted thereon.
The image forming apparatus main body 100 includes four tandem image forming units 48 each including various units for performing an electrophotographic process such as charging, developing, and cleaning around the photosensitive member 7 serving as a latent image carrier. A type image forming apparatus 50 is provided. Above the tandem image forming apparatus 50, there is provided an exposure apparatus 51 that exposes the photoreceptor 7 with laser light based on image information to form a latent image. Further, an intermediate transfer belt 40 made of an endless belt member is provided at a position facing each photoconductor 7 of the tandem type image forming apparatus 50. A primary transfer unit 92 that transfers the toner images of the respective colors formed on the photoconductor 7 to the intermediate transfer belt 40 is disposed at a position facing the photoconductor 7 via the intermediate transfer belt 40.

For the developing device 35 of the image forming unit 48, the developer containing the toner is used. In the developing device 35, the developer carrying member carries and conveys the developer, and an alternating electric field is applied at a position facing the photoconductor 7 to develop the latent image on the photoconductor 7. By applying the alternating electric field, the developer is activated, the charge amount distribution of the toner can be narrowed, and the developability can be improved.
Further, both the photosensitive member 7 and the developing device 35 are integrally supported, and a process cartridge can be formed that is detachable from the image forming apparatus main body. In addition, the process cartridge may include a charging unit and a cleaning unit.

The operation of the image forming apparatus is as follows.
First, the document is set on the document table 60 of the automatic document feeder 500, or the automatic document feeder 500 is opened and the document is set on the contact glass 62 of the scanner 400, and the automatic document feeder 500 is closed. Hold it down.
When a start switch (not shown) is pressed, when the document is set on the automatic document feeder 500, the document is transported and moved onto the contact glass 62, and then the document is set on the other contact glass 62. At that time, the scanner 400 is immediately driven, and the first traveling body 63 and the second traveling body 64 travel. Then, the first traveling body 63 emits light from the light source, further reflects the reflected light from the document surface toward the second traveling body 64, reflects off the mirror of the second traveling body 64, and passes through the imaging lens 65. The document is placed in the reading sensor 66 and the contents of the document are read.

  When a start switch (not shown) is pressed, one of the support rollers 44, 45, 46 is driven to rotate by the drive motor (not shown), the other two support rollers are driven to rotate, and the intermediate transfer belt 40 is rotated and conveyed. To do. At the same time, the individual image forming means 48 rotate the photoconductor 7 to form black, yellow, magenta, and cyan single color images on each photoconductor 7. Then, along with the conveyance of the intermediate transfer belt 40, the single color images are sequentially transferred to form a composite color image on the intermediate transfer belt 40.

On the other hand, when a start switch (not shown) is pressed, one of the paper feed rollers 72 of the paper feed table 200 is selectively rotated, and the sheet is fed out from one of the paper feed cassettes 74 provided in multiple stages in the paper bank 73, and the separation roller 75. Are separated one by one into the paper feed path 76, conveyed by the conveyance roller 77, guided to the paper feed path 78 in the image forming apparatus main body 100, and abutted against the registration roller 79 and stopped.
Alternatively, the sheet feeding roller 80 is rotated to feed out the sheets on the manual feed tray 81, separated one by one by the separation roller 82, put into the manual sheet feed path 83, and abutted against the registration roller 79 and stopped.
Then, the registration roller 49 is rotated in synchronization with the composite color image on the intermediate transfer belt 40, the sheet is fed between the intermediate transfer belt 40 and the secondary transfer device 52, and is transferred by the secondary transfer device 52. A color image is recorded on the sheet.

The sheet after the image transfer is conveyed by the secondary transfer device 52 and sent to the fixing device 55. The fixing device 55 applies heat and pressure to fix the transferred image, and then the image is switched by the switching claw 85 and discharged. The paper is discharged at 86 and stacked on the paper discharge tray 87. Alternatively, the sheet is switched by the switching claw 85 and is put into the sheet reversing device 58, where it is reversed and guided again to the transfer position, the image is recorded on the back surface, and then discharged onto the discharge tray 87 by the discharge roller 86.
On the other hand, the intermediate transfer belt 40 after the image transfer is removed by the intermediate transfer belt cleaning device 47 to remove residual toner remaining on the intermediate transfer belt 40 after the image transfer, so that the tandem image forming apparatus 50 can prepare for another image formation.

Next, the configuration of the drive transmission means from the image forming apparatus main body to the process cartridge will be described with reference to FIG.
The photosensitive drum 7 has flanges 15 fixed to both ends of a drum cylinder 7d having a photosensitive body on the outer periphery of an aluminum cylinder, and the flange 15 on the drive receiving side is provided with a cartridge-side elastic member 3 or an engagement-shaped member. is there.
On the other hand, a main body-side convex member 17 is provided on the image forming apparatus main body side. The main body side convex member 17 is provided with a drive shaft 14 at a position coinciding with the photosensitive drum rotation axis. The drive shaft 14 receives rotational force from a pinion gear 18 of a motor 16 via a transmission gear 19 and can be driven to rotate. A body-side convex member 17 is formed at the tip of the drive shaft 14.

A transmission gear 19 is fixed to the drive shaft 14, and the transmission gear 19 and the pinion gear 18 are helical gears. When the drive shaft 14 is rotated in the rotation direction at the time of image formation, the transmission gear 19 A thrust in the direction of arrow C in FIG. 34 is generated. As a result, the drive shaft 14 integrated with the transmission gear 19 advances toward the photosensitive drum 7, and the main body-side convex member 17 provided on the surface of the drive shaft 14 and the elastic member 3 provided on the photosensitive drum side or the engagement. The shaped member engages.
The configuration of the drive transmission means from the image forming apparatus main body to the developing cartridge is the same as described above.

It is a fragmentary sectional enlarged view of a drive transmission part. FIG. 3 is a perspective view of a toner supply container showing an example of an embodiment of the present invention. FIG. 6 is a cross-sectional view of a sealing member of a toner supply container. It is a front view which shows the engagement state of the convex member and elastic member which concern on Embodiment 1 of this invention. It is explanatory drawing at the time of using a some cone or protrusion as a main body side convex member. It is explanatory drawing at the time of using the convex shape formed by cutting and raising processes, such as sheet metal, as a main body side convex member. FIG. 6 is an explanatory diagram when Velcro (registered trademark) is used for the engaging portion on the main body side and the toner supply container side. FIG. 6 is a side view illustrating a state where toner is discharged from a supply container. It is a schematic block diagram which shows one Example of the process cartridge in this invention. 1 is a schematic configuration diagram illustrating an embodiment of an image forming apparatus main body according to the present invention. It is a longitudinal cross-sectional view of a process cartridge side elastic member and a main body side convex member.

Explanation of symbols

1 Toner supply container 1A Container body
1a opening
1b Drive shaft
1c Spiral protrusion
2 Sealing member
2a engagement hole
2b Sealing part
2c Coupling engagement part
2d Control part 3 Elastic member
3h Center hole 7 Photosensitive drum 7d Drum cylinder 15 Flange 16 Motor 10 Main body drive unit
10a Drive shaft 11 Intermediate gear
11a pinion
11b Gear 12 Holding member 13 Supply container receiving roller 14 Drive shaft 17 Main body side convex member
17a Position alignment center 18 Pinion gear 19 Transmission gear 35 Developing device 40 Intermediate transfer belts 44, 45, 46 Support rollers 47 Intermediate transfer belt cleaning device 48 Image forming means 50 Tandem type image forming device 51 Exposure device 52 Secondary transfer device 55 Fixing device 56 Fixing belt 58 Sheet reversing device 60 Document table 62 Contact glass 63 First traveling body 64 Second traveling body 65 Imaging lens 66 Reading sensor 72, 80 Paper feed roller 73 Paper bank 74 Paper feed cassette 75, 82 Separation roller 76, 78 Paper feed path 77 Transport roller 79 Registration roller 81 Manual feed tray 83 Manual feed path 85 Switching claw 86 Discharge roller 87 Discharge tray 92 Primary transfer means 100 Image forming apparatus main body
DESCRIPTION OF SYMBOLS 102 Developing roller 103 Toner 104 Developer 1st control member 106 Toner 1st accommodating part 106a Toner transfer part 107 Agitator 109 Developer 2nd control member 120 Charger charger 130 Laser optical device 140 Developer cartridge 150 Transfer charger 160 Cleaning device 200 Paper feed Table 300 Slide member 400 Scanner 500 Automatic document feeder m Drive motor

Claims (11)

In a toner supply container that is detachable from the image forming apparatus main body and receives a driving force from a driving unit of the image forming apparatus main body,
The surface that receives the driving force from the driving unit is formed of a member having an engagement shape, and the engagement shape is a plurality of holes arranged radially,
A convex member is provided at the tip of the driving unit, and the convex member is formed by cutting and raising , and is formed of a plurality of cones or projections arranged radially, and the plurality of cones or projections can rotate to discharge toner. A convex member inclined in the circumferential direction in a direction to engage with the engaging member when rotated in a direction,
A toner replenishing container, wherein the toner replenishing device receives a driving force from the driving unit when the convex member engages with the engagement-shaped member. The toner supply container according to claim 1,
The toner replenishing container has a container body for storing toner therein.
A toner replenishing container comprising: a mechanism for agitating, transporting, and discharging the toner stored therein by rotating the container main body by a driving force from the driving unit. The toner supply container according to claim 1 or 2,
The toner replenishing container has a substantially cylindrical shape. The toner supply container according to any one of claims 1 to 3,
An opening for discharging toner at one end of the cylinder;
A toner replenishing container, wherein the opening is provided with a sealing member for opening and closing the opening. The toner supply container according to any one of claims 1 to 3,
An opening for discharging toner at one end of the cylinder;
The opening has a sealing member for opening and closing the opening,
The sealing member is provided with the engagement-shaped member at the distal end on the side receiving the driving force,
When the container body and the sealing member rotate in the toner discharge rotation direction, they are locked together.
When the toner rotates in a rotational direction that does not discharge, the engagement is disengaged,
A toner replenishing container, wherein the toner replenishing container is kept locked in the rotational direction even when the opening is opened. The toner supply container according to any one of claims 1 to 3,
An opening for discharging toner at one end of the cylinder;
The opening has a sealing member for opening and closing the opening,
A toner supply container, wherein the toner supply container is provided with the engagement-shaped member at one end thereof. In a process cartridge detachable from the image forming apparatus main body,
A photoreceptor,
Process means acting on the photoreceptor;
A driving force receiving member for receiving transmission of driving force from the driving unit of the image forming apparatus main body,
The drive transmission part of the drive force receiving member from the drive unit is configured by a combination of an engagement-shaped member and a convex part,
The driving force receiving member has the engagement-shaped member or the convex portion,
The engagement shape is a plurality of holes arranged radially,
The convex portion is formed by cutting and raising, and includes a plurality of cones or protrusions arranged radially.
A process cartridge characterized by that. The process cartridge according to claim 7 .
The process cartridge is a cartridge in which a charging unit, a developing unit, or a cleaning unit as a process unit and a photosensitive member are integrally formed.
A process cartridge which is detachable from an image forming apparatus main body . In the developing cartridge that can be attached to and detached from the image forming apparatus main body,
A developing member that develops the electrostatic latent image formed on the photoreceptor using a developer;
A developer container for storing a developer to be supplied to the developing member;
A driving force receiving member for receiving transmission of driving force from the driving unit of the image forming apparatus main body,
The surface that receives the driving force from the driving unit is formed of a member having an engagement shape, and the engagement shape is a plurality of holes arranged radially.
The engagement-shaped member is engaged with the drive unit by an operation that receives at least a drive force from the drive unit,
Configured to receive the driving force,
The driving force receiving member has a convex portion, and the convex portion is formed by cutting and raising, and includes a plurality of cones or protrusions arranged radially.
A developing cartridge. In an image forming apparatus in which a process cartridge is detachable and forms an image on a recording medium,
A photoreceptor,
Process means acting on the photoreceptor;
A driving force receiving member for receiving transmission of driving force from the driving unit of the image forming apparatus main body,
The drive transmission part of the drive force receiving member from the drive unit is configured by a combination of an engagement-shaped member and a convex part,
The engagement shape is a plurality of holes arranged radially, and the convex portion is formed by cutting and raising a plurality of cones or protrusions arranged radially,
The driving force receiving member includes a mounting means for detachably mounting the process cartridge having the engagement-shaped member or the convex portion, and
A drive unit that transmits drive force to the drive force receiving member;
A structure that engages with the driving unit by an operation that receives driving from the driving unit;
Conveying means for conveying the recording medium
An image forming apparatus. In an image forming apparatus in which a developing cartridge is detachable and forms an image on a recording medium.
A developing member that develops the electrostatic latent image formed on the photoreceptor using a developer;
A developer container for storing a developer to be supplied to the developing member;
A driving force receiving member for receiving transmission of driving force from the driving unit of the image forming apparatus main body,
The drive transmission part of the drive force receiving member from the drive unit is configured by a combination of an engagement-shaped member and a convex part,
The engagement shape is a plurality of holes arranged radially, and the convex portion is formed by cutting and raising a plurality of cones or protrusions arranged radially,
The driving force receiving member is a mounting means for detachably mounting the developing cartridge having the engagement-shaped member or the convex portion, and
A drive unit for transmitting drive force to the power receiving member;
A structure that engages with the driving unit by an operation that receives driving from the driving unit;
Conveying means for conveying the recording medium
An image forming apparatus.

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