JP2019113615A - Toner container - Google Patents

Abstract

To provide a toner container that can reduce a sound of collision or flip between a stirring blade and an inner surface of a toner container body when stirring is actuated.SOLUTION: A toner container comprises: a toner container body that stores a toner; a toner stirring mechanism 30 that stirs the toner inside the toner container body; a toner delivery port that delivers the toner inside the toner container body; and a toner conveying unit that conveys the toner stirred by the toner stirring mechanism 30 toward the toner delivery port. The toner stirring mechanism 30 includes a rotation shaft 31, and a stirring blade 32 attached to the rotation shaft 31; the stirring blade 32 is divided into a plurality of blade parts 33 in the axial direction of the rotation shaft 31; the plurality of blade parts 33 are individually fixed to a plurality of different fixing positions in the circumferential direction of the rotation shaft 31, and in the fixed state, rotate integrally with the rotation shaft 31 to stir the toner.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a toner container.

An image forming apparatus such as a copying machine or a printer includes a photosensitive drum, and scans a corresponding photosensitive drum with a light beam to form an electrostatic latent image on the photosensitive drum. A developing device forms a toner image on the electrostatic latent image using toner. Thereafter, the toner image is transferred and fixed to the recording material to obtain a recorded image.
Since the toner is consumed each time it is developed, it is necessary to periodically supply the toner to the developing device. The toner container for containing the toner is formed in a substantially box shape, and a toner delivery port for delivering the stored toner to the developing device is formed in the toner container main body. Further, in the toner container main body, a toner conveying portion for conveying the toner to the toner delivery port, and a toner stirring mechanism for stirring the toner are provided.
The stirring blade of the toner stirring mechanism functions to make the physical properties of the toner in the toner container uniform and to prevent the toner from being aggregated. Furthermore, by rubbing the stirring blade and the inner surface of the toner container main body, an effect of scraping off the toner attached to the inner surface is obtained.
Conventionally, in order to sufficiently agitate the toner in the toner container by the agitating blade, the technology of Patent Document 1 has been developed.
In the technique of Patent Document 1, the stirring blade includes a blade member (ladder-shaped supports 21a and 21b) and an elastic member (rotational direction conveying member 22 and axial direction conveying member 23). The blade members are disposed symmetrically about the rotation axis, and the elastic members are provided at both ends of the blade members. The elastic member agitates the toner while rubbing the inner surface of the toner container main body.
The elastic member (rotational direction conveyance member 22) on one side is formed in a single plate shape, and agitates the toner in the rotational direction of the rotation shaft. The elastic member (axial direction conveying member 23) on the opposite side is formed by dividing one flat plate into six (see paragraph (0040), FIG. 2, FIG. 3 of the specification of Patent Document 1), and rotates the toner. Transport in the axial direction of the shaft. The six elastic member portions are fixed at the same position in the circumferential direction of the rotation shaft, and rotate integrally with the rotation shaft in the fixed state to agitate the toner.

Japanese Patent Laid-Open No. 2002-156819

During the stirring operation of the toner stirring mechanism, the inner surface of the toner container main body when the stirring blade (elastic member constituting the stirring blade in the case of Patent Document 1) passes over a gap, a step or a conveyance portion in the toner container main body. The collision sound and collision sound are generated.
In the above-mentioned prior art, since the elastic member on one side is a single plate, the collision noise and the repelling noise are large. Further, the six elastic member portions constituting the opposite elastic member are fixed in the same position in the circumferential direction of the rotation shaft so as to be integrally rotated with the rotation shaft to agitate the toner. The elastic member portion of the unit simultaneously emits collision sound and repelling sound, and these sounds are also loud.
The present invention has been made in view of the above situation, and an object thereof is to provide a toner container capable of reducing collision noise and repelling noise between a stirring blade and an inner surface of a toner container main body generated at the time of stirring operation of a toner stirring mechanism. It is in.

  The toner container according to the present invention comprises a toner container main body for containing toner, a toner stirring mechanism for stirring toner in the toner container main body, a toner delivery port for delivering toner in the toner container main body, and the toner stirring mechanism And a toner transport unit for transporting the stirred toner to the toner delivery port side. The toner stirring mechanism includes a rotation shaft and a stirring blade attached to the rotation shaft, and the stirring blade is divided into a plurality of blade portions in the axial direction of the rotation shaft. The plurality of blade portions are separately fixed to a plurality of fixed positions different in the circumferential direction of the rotation shaft, and in the fixed state, they rotate integrally with the rotation shaft to agitate the toner.

  According to the present invention, it is possible to provide a toner container capable of reducing collision noise and repelling noise between the stirring blade and the inner surface of the toner container main body, which are generated at the time of stirring operation of the toner stirring mechanism.

FIG. 1 is a schematic view showing an internal structure of a color printer. FIG. 2 is a perspective view showing the toner container and the mounting portion. FIG. 3 is a perspective view showing a toner container. FIG. 4 is a cross-sectional view of the toner container, and is a cross-sectional view taken along line A-A of FIG. FIG. 5 is a cross-sectional view of the toner container, and is a cross-sectional view taken along line B-B of FIG. FIG. 6 is a perspective view of the toner stirring mechanism before the initial start, and is a perspective view of the toner stirring mechanism in which the free end of the blade portion is positioned on a straight line. FIG. 7 is a perspective view of the toner stirring mechanism at the time of initial startup, and is a perspective view of the toner stirring mechanism in a state in which a plurality of blade portions are separately fixed to a plurality of fixing positions. FIG. 8 is a perspective view showing an engaging portion provided on the mounting member. FIG. 9 is a perspective view showing an engaged portion provided on the attachment member.

Hereinafter, embodiments of the present invention will be described based on the drawings.
FIG. 1 schematically shows the internal structure of the color printer 1 (corresponding to an image forming apparatus). The color printer 1 includes an apparatus main body 2 having a substantially rectangular parallelepiped shape. A sheet feeding cassette 3 is detachably provided at the lower part of the mounting main body 2, and a sheet discharge tray 4 is provided on the upper surface of the apparatus main body 2.

  Further, the color printer 1 is provided with a sheet feeding unit 5, an image forming unit 6 and a fixing device 7 inside the apparatus main body 2. The sheet feeding unit 5 feeds the sheet S in the sheet feeding cassette 3 toward a conveyance path 8 extending from the sheet feeding cassette 3 to the sheet discharge tray 4. The image forming unit 6 is provided at an intermediate portion of the conveyance path 8. The fixing device 7 is provided on the downstream side of the conveyance path 8. The sheet S is not limited to a paper sheet but includes a resin film and the like.

  The image forming unit 6 includes four toner containers (corresponding to toner containers) 10 K, 10 C, 10 M, 10 Y, an intermediate transfer belt 11, four drum units 12, and an optical scanning device 13. The intermediate transfer belt 11 is disposed below the respective toner containers 10 K, 10 C, 10 M, 10 Y, the four drum units 12 are disposed below the intermediate transfer belt 11, and the light scanning device 13 is disposed at each drum unit 12. It is arranged on the lower side.

  The four toner containers 10K, 10C, 10M, 10Y contain toners (developers) of four colors. In the following description, in the description common to the four toner containers 10K, 10C, 10M, and 10Y, only the arithmetic numerals are added.

  Each drum unit 12 includes a photosensitive drum 14, a charging device 15, a developing device 16, a primary transfer roller 17, and a cleaning device 18. The four drum units 12 have the same configuration. Hereinafter, one drum unit 12 will be described.

  The photosensitive drum 14 is in contact with the lower surface of the intermediate transfer belt 11. The charging device 15 charges the surface of the photosensitive drum 14. The light scanning device 13 emits scanning light toward the photosensitive drum 14 and forms an electrostatic latent image on the surface of the photosensitive drum 14. The developing device 16 develops the electrostatic latent image on the surface of the photosensitive drum 14 into a toner image. The primary transfer roller 17 primarily transfers the toner image to the intermediate transfer belt 11 moving in the direction of arrow G in FIG.

  On the right side of the intermediate transfer belt 11, a secondary transfer roller 19 forming a secondary transfer nip N is disposed. A full color toner image is formed on the intermediate transfer belt 11 by superimposing toner images of four colors. The full color toner image is secondarily transferred onto the sheet S passing through the secondary transfer nip N. The fixing device 7 fixes the toner image on the sheet S. The sheet S after the fixing process is discharged to the discharge tray 4.

[Structure of Toner Container 10]
As shown in FIG. 2, a mounting portion 2 a to which four toner containers 10 are mounted is provided at the top of the apparatus main body 2. The four toner containers 10 are arranged in the left-right direction. A top cover (not shown) constituting the sheet discharge tray 4 is swingably supported on the upper portion of the apparatus body 2. The operator swings the top cover upward to open the mounting portion 2a, and performs the mounting and demounting operation of the toner container 10 with respect to the mounting portion 2a.

 The four toner containers 10 contain toners of black (K), cyan (C), magenta (M) and yellow (Y) in order from the upstream side of the movement direction of the intermediate transfer belt 11. The toner container 10K for storing the black toner is formed to have a larger capacity than the other toner containers 10C, 10M and 10Y. The other toner containers 10C, 10M and 10Y are all formed in the same capacity and in the same shape. The basic configurations of the four toner containers 10 are substantially the same. Hereinafter, the toner container 10 for storing yellow toner will be described.

  As shown in FIGS. 3 and 4, the toner container 10 includes a toner container main body 20 (corresponding to a toner container main body) made of synthetic resin for containing toner, and a toner stirring mechanism 30 for stirring toner in the toner container main body 20. And a conveyance screw 21 (corresponding to a toner conveyance unit) for conveying the toner. The conveying screw 21 conveys the toner stirred by the toner stirring mechanism 30 to the side of a toner delivery port 28 described later and supplies the toner to the developing device 16.

  The toner container main body 20 is formed in a substantially rectangular parallelepiped shape that is long in the front-rear direction, and is formed in a rectangular shape that is long in the cross-sectional vertical direction. The toner container main body 20 has a substantially box-like toner storage portion 23 whose upper surface is open, and a lid portion 24 which closes the upper surface opening of the toner storage portion 23.

  The toner storage portion 23 includes a pair of left and right side walls 26L and 26R and a pair of end walls 27F and 27B that rise from the periphery of the bottom wall 25. As shown in FIG. 4, a cylindrical portion 29 bulging forward is formed at the center in the vertical direction of the front end wall 27F, and an opening on the front side of the cylindrical portion 29 is configured as a toner filling port 29A. . Then, a cap 39 having a hat-shaped cross section is inserted and fitted to the cylindrical portion 29 from the front side, and the filling port 29A is closed by the cap 39.

  The bottom wall 25 has a conveying curved portion 25 a and a stirring curved portion 25 b that bulge downward. The conveying curved portion 25a is continuously provided on the right side of the stirring curved portion 25b, and is formed narrower (with a smaller radius of curvature) in the left-right direction than the stirring curved portion 25b. A toner delivery port 28 is formed at the front of the conveying curved portion 25a. Although not shown, a shutter for opening and closing the toner delivery port 28 is provided at the front of the conveyance bending portion 25a.

  As shown in FIG. 3, the control lever 20a is provided on the front end wall 27F so as to be able to swing. A cover 20b is attached to the front end wall 27F to cover the pivot point of the operation lever 20a. When the control lever 20a is rotated in the mounting state where the toner container 10 is mounted to the mounting portion 2a, the shutter moves and the toner delivery port 28 is opened and closed. When the toner delivery port 28 is opened in the mounted state, the toner delivery port 28 is connected to a replenishment port (not shown) of the developing device 16 through a toner replenishment path (not shown).

  A main body side flange 23 a that protrudes outward is formed on the top of the toner storage portion 23. Further, at the lower part of the lid portion 24, a lid side flange 24a that protrudes outward is formed. The lid portion 24 is fixed to the housing portion 23 by joining the lid side flange 24a to the main body side flange 23a.

  As shown to FIG. 4, FIG. 5, the conveyance screw 21 has the screw shaft 21a and the helical blade 21b, and is arrange | positioned by the upper side of the conveyance curved part 25a. The screw shaft 21a is rotatably supported by a pair of front and rear end walls 27F and 27B. Further, the spiral blade 21b is provided on the circumferential surface of the screw shaft 21a.

[Structure of toner stirring mechanism 30]
As shown in FIGS. 4, 5 and 6, the toner stirring mechanism 30 has a round rod-like rotary shaft 31 rotatably supported on the front and rear end walls 27F and 27B, and one end on the rotary shaft 31. And a stirring blade 32 attached. The stirring blade 32 is set slightly shorter than the rotating shaft 31. The rotating shaft 31 is rotated by an electric motor (not shown).

  The rotating shaft 31 is located at a position substantially the same distance away from the stirring and bending portion 25b and the side walls 26L and 26R. The stirring blade 32 is formed in a rectangular shape elongated in the axial direction of the rotating shaft 31 by a flexible synthetic resin film (for example, polyethylene terephthalate).

  As shown in FIG. 6, the stirring blade 32 is divided into a plurality of blade portions 33 in the axial direction of the rotary shaft 31, and in the present embodiment, it is divided into six blade portions 33 as an example. Then, the six blade portions 33 are fixed separately to a plurality of fixed positions different in the circumferential direction of the rotary shaft 31 (see FIG. 7), and in the fixed state, they rotate integrally with the rotary shaft 31 to agitate the toner. It is configured to As described later, before the initial activation of the toner stirring mechanism 30, free ends 33A of the plurality of blade portions 33 are positioned on a substantially straight line (see FIG. 6). The blade portion 33 is formed in a rectangular shape that is long in the direction along the short side of the stirring blade 32, and the lengths in the axial direction of the plurality of blade portions 33 are set to be the same.

  The first blade portion 33 (corresponding to one blade portion) from the front located at the frontmost side in the front-rear direction of the apparatus main body 2 is fixed to the rotation shaft 31 via the mounting member 34. Further, the second to sixth blade portions 33 (corresponding to the remaining blade portions) from the front are rotatably attached to the rotary shaft 31 via the mounting member 34, and the rotary shaft 31 relative to the rotary shaft 31 It is configured to be rotatable around an axis.

  The mounting member 34 is elongated in the axial direction. Further, the mounting member 34 is formed in a rectangular shape in cross section, and includes an axial hole 34H (see FIGS. 5 and 9) having a circular cross section. One end of the wing portion 33 in the longitudinal direction is attached to the side surface of the mounting member 34. The attachment member 34 to which the first blade portion 33 is attached is extrapolated to the rotation shaft 31 and fixed by adhesion. The attachment member 34 to which the second to sixth blade portions 33 are attached is externally inserted rotatably on the rotation shaft 31.

  Each blade 33 is formed to be longer than the distance from the axial center of the rotation shaft 31 to the inner surface of the toner container main body 20. In detail, each blade 33 is formed to have a length in contact with the inner surface of the agitating and bending portion 25b, the inner surfaces of the side walls 26L and 26R, and a part of the inner surface of the lid 24. On the inner surface of the lid portion 24, there is also a portion where the wing portion 33 does not contact.

  As shown in FIG. 6, free ends 33 A (tips) of the plurality of vanes 33 are located parallel to the rotation axis 31. Before the initial activation of the toner stirring mechanism 30, the free ends 33A of the plurality of blade portions 33 are positioned on a substantially straight line. Then, as shown in FIG. 8 and FIG. 9, between the attachment members 34 of the adjacent blade portions 33, an engagement for coupling both attachment members 34 so as to be integrally rotatable around the axis of the rotation shaft 31 is engaged. A mechanism 35 intervenes. The engagement mechanism 35 includes an engagement convex portion 36 (corresponding to an engagement portion) provided on one of both mounting members 34 and an engagement concave portion 37 (corresponding to an engaged portion) provided on the other. .

  As shown in FIG. 8, the engagement convex portion 36 is provided so as to protrude from the end surface 34A of the attachment members 34 facing the rear side of the apparatus main body 2, and as shown in FIG. The mating recess 37 is recessed in the end surface 34 A facing the front side of the device body 2.

  The engaging convex portion 36 and the engaging concave portion 37 are fan-shaped as viewed in the longitudinal direction of the mounting member 34 (the axial direction of the rotation shaft 31). The inner peripheral surface of the engagement convex portion 36 is fitted to the outer peripheral surface of the rotary shaft 31.

  The engagement protrusion 36 is inserted in the engagement recess 37 in the axial direction of the rotation shaft 31. Before the initial activation of the toner stirring mechanism 30 (when new), the circumferential end face 36A (see FIG. 8) of the engagement convex portion 36 and the circumferential inner surface 37A (see FIG. 9) of the engagement recess 37 The plurality of blade portions 33 are configured to be relatively rotatable around the axis of the rotation shaft 31 while facing each other with a gap. Then, at the time of initial startup of the toner stirring mechanism 30, as the rotary shaft 31 rotates, one of the adjacent mounting members 34 rotates about a predetermined angle (10 degrees as an example) with respect to the other. After that, the engagement projection 36 and the engagement recess 37 are engaged and connected.

[Operation of toner stirring mechanism 30]
As shown in FIG. 6, before the initial activation of the toner stirring mechanism 30, free ends 33 </ b> A of the plurality of blade portions 33 are positioned on a substantially straight line.

  Then, as shown in FIG. 7, when the rotary shaft 31 is rotated at the time of initial startup of the toner stirring mechanism 30, the attachment member 34 of the first blade portion 33 fixed to the rotary shaft 31 is rotated accordingly. Rotate together with When the attachment member 34 of the first blade portion 33 is rotated by a predetermined angle, the circumferential end surface 36A of the engagement convex portion 36 is the inner surface 37A of the engagement concave portion 37 of the second blade portion 33 in the circumferential direction. The engaging projection 36 and the engaging recess 37 engage with each other. As a result, the second blade 33 is fixed at a predetermined position around the rotation shaft 31. As a result, with the rotation of the rotary shaft 31, the mounting member 34 of the first blade portion 33 and the mounting member 34 of the second blade portion 33 rotate integrally with the rotary shaft 31.

  Then, as the rotation of the rotation shaft 31 progresses, the third blade 33 to the sixth blade 33 are successively fixed at fixed positions around the rotation shaft 31 by the same operation as described above (see FIG. 7). And all the blade portions 33 rotate integrally with the rotary shaft 31 to agitate the toner.

  As described above, at the time of initial startup of the toner stirring mechanism 30, as the rotating shaft 31 rotates, the second to sixth blade portions 33 rotate around the axis of the rotating shaft 31 with respect to the rotating shaft 31. Thus, they are separately fixed at a plurality of different fixed positions in the circumferential direction of the rotary shaft 31 (see FIG. 7).

  The first blade portion 33 to the sixth blade portion 33 are displaced at the same angle around the rotation shaft 31 in this order. That is, the angle around the rotation axis 31 formed by the adjacent vanes 33 is the same in each pair of the adjacent vanes 33.

  As a result, at the time of stirring operation, the timing at which each blade portion 33 collides with the inner surface of the toner container main body 20 can be shifted, and collision noise and repulsion noise can be reduced. And each blade part 33 can be arrange | positioned in the optimal position for stirring and scraping of a toner in the circumferential direction of the rotating shaft 31, and the stirring effect can be improved.

Before the initial activation of the toner stirring mechanism 30, the free ends 33A of the plurality of vanes 33 are positioned substantially on a straight line, so that the vanes 33 are new when the vanes 33 are located at the same position for a long period of time. The pressure from the inner surface of the toner container main body 20 can be disposed at a position of zero.
In the toner container 10 shaped as in the present embodiment, the position where the pressing force is zero exists only in a limited narrow range. Even in such a case, according to the present embodiment, the free ends 33A of the plurality of vanes 33 are positioned substantially on a straight line, so that the vanes 33 can be reliably positioned at the position where the pressing force is zero. Can be placed on
That is, as shown in FIG. 5, the blade 33 can be disposed at a position where the free end 33 A of the blade 33 does not hit the inner surface of the toner container main body 20. As a result, it is possible to suppress the deterioration of the toner agitation and scraping performance of the blade portion 33 without causing the blade portion 33 to be squeezed / cut.

  Even when the blade 33 is disposed at a position where the free end 33A of the blade 33 always contacts the inner surface of the toner container main body 20, the blade 33 can be disposed at a position where the pressing force is small. As a result, it is possible to minimize the set / cut and reduce the toner stirring and scraping performance of the blade portion 33.

  Furthermore, since the free ends 33A of the plurality of blade portions 33 are positioned substantially on a straight line before the initial activation of the toner stirring mechanism 30, the blade portion 33 can be filled with toner 29A (see FIG. 4) at the time of toner filling. ) Can be arranged avoiding the vicinity. More specifically, as described above, the toner filling port 29A is formed at the center in the vertical direction of the front end wall 27F of the toner storage portion 23. According to the present embodiment, at the time of toner filling, the blade portion 33 can be arranged not to be located on the rear side (axial direction side) of the filling port 29A and at a position not to hit the inner surface of the toner container main body 20. Such a position exists only within a limited narrow range in the toner container 10 shaped as in the present embodiment. Even in such a case, the free end 33A of the plurality of vanes 33 is positioned on a substantially straight line, so that the vanes 33 are not positioned on the rear side (axial direction side) of the filling port 29A. In addition, it can be disposed at a position where it does not hit the inner surface of the toner container main body 20. As a result, when the toner is filled into the toner container main body 20, the blade 33 does not get in the way, and the toner can be smoothly filled into the toner container main body 20.

  Further, each blade portion 33 can be freely disposed at a position (position in the circumferential direction of the rotary shaft 31) at which the assembly and attachment of the toner container 10 are easy.

[Another embodiment]
(1) The lengths of the plurality of blade portions 33 in the axial direction of the rotation shaft 31 may be different from each other.
(2) The attachment member 34 to which the first blade portion 33 is attached may be fixed to the rotating shaft 31 by a fixing method other than adhesion.
(3) Prior to the initial startup of the toner stirring mechanism 30, the plurality of vanes 33 are separately disposed at different positions around the rotation shaft 31 for the purpose of facilitating the filling of the toner, etc. May be
(4) The angle around the rotation axis 31 formed by the adjacent vanes 33 may be different in each pair of the adjacent vanes 33.
(5) The numerical values mentioned in the above embodiments are merely examples, and may be other numerical values. For example, the stirring blade 32 may be divided into 2 to 5 or 7 or more blades 33.
(6) In the above embodiment, the two or more blades 33 are fixed to the rotating shaft 31 via the mounting member 34, and the remaining blades 33 rotate around the axis of the rotating shaft 31 with respect to the rotating shaft 31. It may be configured freely.

  As described above, the present invention is useful for a toner container, and particularly useful for a toner container attached to an image forming apparatus such as a copying machine, a facsimile, a printer, and a multifunction peripheral (MFP).

20 Toner Container Body (Toner Container Body)
21 Toner Conveying Unit (Conveying Screw)
28 toner delivery port 30 toner stirring mechanism 31 rotation shaft 32 stirring blade 33 blade portion 33A free end 34 of blade portion mounting member 35 engagement mechanism 36 engagement portion 37 engaged portion

Claims (5)

A toner container body for containing toner;
A toner stirring mechanism for stirring the toner in the toner container main body;
A toner delivery port for delivering the toner in the toner container main body;
A toner transport unit configured to transport the toner stirred by the toner stirring mechanism to the toner delivery port side;
The toner stirring mechanism includes a rotating shaft and a stirring blade attached to the rotating shaft,
The stirring blade is divided into a plurality of blade portions in the axial direction of the rotation shaft,
The plurality of blade portions are separately fixed to a plurality of fixed positions different in the circumferential direction of the rotation shaft, and in the fixed state, the plurality of blade portions rotate integrally with the rotation shaft to agitate the toner. Before the initial activation of the toner stirring mechanism, a predetermined number of blades of the plurality of blades are fixed at the fixed position, and the remaining blades are around the axis of the rotation axis with respect to the rotation axis. And is located at a predetermined position around the rotation axis,
At the time of initial startup of the toner stirring mechanism, as the rotation shaft rotates, the remaining blade portions rotate around the axis of the rotation shaft with respect to the rotation shaft and are fixed at the fixed position. The toner container according to claim 1.   The toner container according to claim 2, wherein one of the plurality of blade portions is fixed at the fixed position before the initial activation of the toner stirring mechanism.   The toner container according to claim 3, wherein free ends of the plurality of blade portions are positioned substantially in a straight line before the initial activation of the toner stirring mechanism. Before the initial activation of the toner stirring mechanism, one blade of the plurality of blades is fixed to the rotation shaft through the attachment member, and the remaining blades are attached to the rotation shaft through the attachment member. It is rotatably mounted and
Between the attachment members of adjacent blade portions, an engagement mechanism interposing the attachment members so as to be integrally rotatable about the axis is interposed,
The engagement mechanism includes an engagement portion provided on one of the two attachment members and an engaged portion provided on the other.
At the time of initial startup of the toner stirring mechanism, as the rotation shaft rotates, one of the two mounting members is rotated about the axis by a predetermined angle with respect to the other, and then the engagement portion is engaged with the engagement portion The toner container according to claim 3 or 4, wherein the parts are engaged.

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