JP2009098409A - Color image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color image forming apparatus capable of reliably preventing erroneous insertion of toner containers without increasing the number of components. <P>SOLUTION: The color image forming apparatus is configured such that: the plurality of toner containers storing the corresponding color toner for replenishment are attachable to an apparatus body; when each of the toner containers is attached to the apparatus, a coupling 26a on the toner container side and a coupling 27a on the apparatus body side are connected by protrusion and recess fitting; the toner supply port of each toner container is opened or closed by turning the container shutter 25 of each toner container via both the couplings 27a and 26a from the apparatus body side. In the color image forming apparatus, the protrusion 26a-1 of the toner container side coupling 26a and the corresponding recess 27a-1 of the coupling 27a on the apparatus body side are made different in shape and/or color from each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a color image forming apparatus capable of mounting a plurality of toner containers containing replenishing color toners.

  In an image forming apparatus such as a color copying machine or a color printer that forms a color image on a sheet by electrophotography, an electrostatic latent image formed on an image carrier such as a photosensitive drum is used with a color toner in a developing device. A color image forming apparatus that employs a method of replenishing each color toner from a plurality of toner containers when the color toner in the developing apparatus is consumed and the remaining amount is reduced is known. ing.

  In such a color image forming apparatus provided with a plurality of toner containers, the main body cover is opened and each toner container is attached and detached, but each color (four colors of magenta, cyan, yellow and black if full color) is supplied. When a plurality of toner containers containing toner for use are erroneously inserted at the wrong mounting position, a desired color image cannot be obtained due to the color mixture of the toners.

  Therefore, conventionally, a sticker is attached to the mounting position of the apparatus main body or a mark shape is formed to prevent erroneous insertion of the toner container.

In Patent Document 1, an incompatible key is provided on a process cartridge and a toner container (toner supply container), an incompatible rail is provided on the apparatus body side, and a process cartridge and a toner container set in advance at each station. Then, a configuration has been proposed in which the process cartridge and the toner container can be attached to and detached from the corresponding station.
JP 2003-084534 A

  However, even if a sticker is pasted as in the past, the user may erroneously insert the toner container without looking at the seal.

  In addition, the configuration proposed in Patent Document 1 has a problem that the number of parts increases and space is eliminated.

  The present invention has been made in view of the above problems, and an object thereof is to provide a color image forming apparatus that can reliably prevent erroneous insertion of a toner container without causing an increase in the number of parts. .

  In order to achieve the above object, according to the first aspect of the present invention, a plurality of toner containers containing replenishing color toners can be attached. When each toner container is attached to the apparatus main body, the coupling on the toner container side is provided. And the coupling on the apparatus main body side are connected by concave and convex fitting, and the toner supply port of each toner container is opened and closed by rotating the container shutter of each toner container via the both couplings from the apparatus main body side. In such a color image forming apparatus, the unevenness shape and / or color of the coupling on the toner container side and the corresponding coupling on the apparatus main body side are changed for each toner container.

  According to a second aspect of the present invention, in the first aspect of the present invention, the concave-convex shape of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto is an arrow shape.

  According to a third aspect of the present invention, in the first aspect of the present invention, the concave and convex shapes of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto are alphabets representing the color of each toner. Features.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the color of each toner container is a coupling on the toner container side and a corresponding coupling color on the apparatus main body side.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the concave-convex shape portion is fitted to an axial center portion of the coupling on the toner container side and the coupling on the apparatus main body side. An unevenness to be fitted is formed before performing.

  According to the first aspect of the present invention, if the concave and convex shapes of the coupling on the toner container side and the corresponding coupling on the apparatus main body are changed for each toner container, the user can remove the toner container from the apparatus main body. Even if the coupling is tried to be mounted in a position other than the normal position, the couplings do not fit together, so that the user notices erroneous insertion and always mounts the toner container correctly in the normal position. In addition, if the color of the coupling on the toner container side and the coupling on the device main body side that fits into the same color are made different from those of other couplings, the user can visually remove the toner container. Always attach correctly in the correct position.

  Therefore, it is possible to reliably prevent the toner container from being erroneously inserted without causing an increase in the number of parts, and to solve problems such as color toner mixing.

  According to the second aspect of the present invention, since the concave and convex shape of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto is an arrow shape, erroneous insertion of the toner container can be reliably prevented, If the direction of the arrow is the toner container insertion direction, the user can be instructed to insert the toner container.

  According to the third aspect of the present invention, the concave and convex shapes of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto are alphabets representing the color of each toner, for example, “M” for magenta and “C” for cyan. “Y” for yellow, and “K” for black, it is possible to prevent the user from erroneously inserting the toner container, and the user can also know the color of the toner in the installed toner container at the same time.

  According to the fourth aspect of the present invention, since the coupling on the toner container side and the corresponding coupling color on the apparatus main body are the colors of the respective toners, for example, magenta, cyan, yellow, and black, the toner container has an error. Insertion is visually prevented and the user can also know the color of the toner in the installed toner container.

  According to the fifth aspect of the present invention, since the concave and convex portions to be fitted before the concave and convex portion are fitted to each other are formed in the axial center portion of the coupling on the toner container side and the coupling on the apparatus main body side. The concave and convex portions of the coupling are centered so that these fittings are easy and reliable.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a front sectional view of a color image forming apparatus according to the present invention. The illustrated color image forming apparatus is a tandem type, and a magenta image forming unit 1M and a cyan image forming unit are formed in the center of the main body 100. The unit 1C, the yellow image forming unit 1Y, and the black image forming unit 1BK are arranged in tandem at regular intervals.

  Each of the image forming units 1M, 1C, 1Y, and 1BK is provided with photosensitive drums 2a, 2b, 2c, and 2d, which are image carriers, and a charger 3a is disposed around each of the photosensitive drums 2a to 2d. , 3b, 3c, 3d, developing devices 4a, 4b, 4c, 4d, transfer rollers 5a, 5b, 5c, 5d as transfer means, and drum cleaning devices 6a, 6b, 6c, 6d, respectively.

  Here, the photosensitive drums 2a to 2d are drum-shaped photosensitive members, and are rotationally driven at a predetermined process speed in a direction indicated by an arrow (clockwise) by a variable speed stepping motor (not shown). The chargers 3a to 3d uniformly charge the surfaces of the photosensitive drums 2a to 2d to a predetermined potential by a charging bias applied from a charging bias power source (not shown).

  Further, the developing devices 4a to 4d contain magenta (M) toner, cyan (C) toner, yellow (Y) toner, and black (BK) toner, respectively, and are formed on the respective photosensitive drums 2a to 2d. In addition, the toner of each color is attached to each electrostatic latent image to visualize each electrostatic latent image as a toner image of each color.

  The transfer rollers 5a to 5d as transfer means are disposed so as to be in contact with the photosensitive drums 2a to 2d via the intermediate transfer belt 7 in each primary transfer portion. Here, the intermediate transfer belt 7 is stretched between the secondary transfer counter roller 8 and the tension roller 9 and is disposed on the upper surface side of each of the photosensitive drums 2a to 2d. The roller 8 is disposed so as to be in contact with the secondary transfer roller 10 via the intermediate transfer belt 7 in the secondary transfer portion. A belt cleaning device 11 is provided in the vicinity of the tension roller 9. As a material for the intermediate transfer belt 7, for example, a dielectric resin such as polycarbonate, polyethylene terephthalate (PET), polyvinylidene fluoride (PVDF), or the like is selected.

  By the way, above the image forming units 1M, 1C, 1Y, and 1BK in the apparatus main body 100, toner containers 12a for supplying magenta, cyan, yellow, and magenta toner to the developing devices 4a to 4d, respectively. 12b, 12c, 12d are arranged in a line.

  In addition, a laser scanner unit (LSU) 13 is disposed below the image forming units 1M, 1C, 1Y, and 1BK in the apparatus main body 100, and a paper feed cassette 14 is detachably attached to the bottom of the main body 100 below the image forming units. is set up. A plurality of sheets (not shown) are stacked and accommodated in the paper feed cassette 14, and a pickup roller 15 for taking out the paper one by one from the paper feed cassette 14 is taken out in the vicinity of the paper feed cassette 14. A feed roller 16 and a retard roller 17 are provided for feeding the fed paper to the transport path L.

  The conveyance path L extending in the vertical direction on the side of the apparatus main body 100 includes a conveyance roller pair 18 that conveys the sheet, and the secondary transfer counter roller 8 and the second transfer opposing roller 8 at a predetermined timing after the sheet is temporarily held. A registration roller pair 19 is provided to be supplied to the secondary transfer portion which is a contact portion with the next transfer roller 10. Next to the conveyance path L, another conveyance path L ′ used for forming an image on both sides of the sheet is formed, and a plurality of conveyance roller pairs 20 are appropriate for this conveyance path L ′. Are provided at regular intervals.

  By the way, the conveyance path L arranged in the vertical direction on one side in the apparatus main body 100 extends to the paper discharge tray 21 provided on the upper surface of the apparatus main body 100, and the fixing device 22 and the discharge path are in the middle. A paper roller pair 23 and a paper discharge device 24 are provided.

  Next, an image forming operation by the color image forming apparatus having the above configuration will be described.

  When an image formation start signal is issued, the photosensitive drums 2a to 2d are driven to rotate at a predetermined process speed in the direction of the arrow in FIG. 1 (clockwise) in each of the image forming units 1M, 1C, 1Y, and 1BK. The drums 2a to 2d are uniformly charged by the chargers 3a to 3d. The laser scanner unit 13 emits a laser beam modulated by a color image signal for each color, irradiates the surface of each photosensitive drum 2a to 2d with the laser beam, and each color is applied to each photosensitive drum 2a to 2d. An electrostatic latent image corresponding to the color image signal is formed.

  First, magenta toner is attached to the electrostatic latent image formed on the photosensitive drum 2a of the magenta image forming unit 1M by the developing device 4a to which a developing bias having the same polarity as the charged polarity of the photosensitive drum 2a is applied. The electrostatic latent image is visualized as a magenta toner image. This magenta toner image is transferred to the arrow shown in FIG. 1 by the action of the transfer roller 5a to which a primary transfer bias having a polarity opposite to that of the toner is applied at the primary transfer portion (transfer nip portion) between the photosensitive drum 2a and the transfer roller 5a. Primary transfer is performed on the intermediate transfer belt 7 which is rotationally driven in the direction.

  The intermediate transfer belt 7 on which the magenta toner image has been primarily transferred as described above moves to the next cyan image forming unit 1C. In the cyan image forming unit 1C as well, the cyan toner image formed on the photosensitive drum 2b is transferred to the magenta toner image on the intermediate transfer belt 7 in the primary transfer portion in the same manner as described above.

  Similarly, yellow and black toners respectively formed on the photosensitive drums 2c and 2d of the yellow and black image forming units 1Y and 1BK on the magenta and cyan toner images superimposed and transferred on the intermediate transfer belt 7, respectively. The images are sequentially superimposed at each primary transfer portion, and a full-color toner image is formed on the intermediate transfer belt 7. The transfer residual toner which is not transferred onto the intermediate transfer belt 7 and remains on the photosensitive drums 2a to 2d is removed by the drum cleaning devices 6a to 6d, and the photosensitive drums 2a to 2d are prepared for the next image formation. It is done.

  Then, the pickup from the paper feed cassette 14 is performed in accordance with the timing at which the front end of the full color toner image on the intermediate transfer belt 7 reaches the secondary transfer portion (transfer nip portion) between the secondary transfer counter roller 8 and the secondary transfer roller 10. The sheet fed to the conveyance path L by the roller 15, the feed roller 16 and the retard roller 17 is conveyed to the secondary transfer unit by the registration roller pair 19. Then, a full-color toner image is collectively transferred from the intermediate transfer belt 7 to the sheet conveyed to the secondary transfer unit by the secondary transfer roller 10 to which a secondary transfer bias having a polarity opposite to that of the toner is applied. .

  Thus, the sheet on which the full-color toner image has been transferred is conveyed to the fixing device 22, and the sheet on which the full-color toner image has been fixed by being heated and pressurized and thermally fixed on the surface of the sheet. Then, the paper is conveyed to the paper discharge device 24 by the paper discharge roller pair 23 and is discharged onto the paper discharge tray 21 by the paper discharge device 24 to complete a series of image forming operations. The transfer residual toner that is not transferred onto the sheet and remains on the intermediate transfer belt 7 is removed by the belt cleaning device 11, and the intermediate transfer belt 7 is prepared for the next image formation.

  Next, the gist of the present invention will be described with reference to FIGS.

  2 is a perspective view of the toner container, FIG. 3 is a side view of the coupling portion of the toner container, FIG. 4A is a perspective view of the main body side coupling, and FIG. 4B is a perspective view of the container side coupling. FIGS. 5A to 5D are front views of the main body side coupling, FIG. 6 is a partial side view showing the coupling state of the coupling when the toner container is mounted, and FIG. It is a partial front view which shows the opening / closing operation | movement of a container shutter.

  Since the basic configurations of the toner containers 12a to 12d are the same, only the toner container 12a containing magenta toner will be described below, and toner containers 12b to 12h containing other cyan, yellow and black toners will be described. The description of 12d is omitted.

  As shown in FIGS. 2 and 3, a cylindrical container shutter 25 is rotatably provided at one end in the longitudinal direction of the toner container 12a, and a coupling (hereinafter referred to as “container”) is provided at the end of the container shutter 25. 26a) is attached. The container shutter 25 opens and closes a toner supply port (not shown) formed at the bottom of the toner container 12a.

  On the other hand, on the apparatus main body 100 side, a coupling 27a (hereinafter referred to as “main body side coupling”) 27a connected by fitting to the container side coupling 26a when the toner container 12a is mounted, and the main body side coupling. A ratchet 28 is provided for movably holding 27a, and the main body side coupling 27a is always urged in the direction of the container side coupling 26a by a spring (not shown) that is compressed between the main body side coupling 27a and the ratchet 28. .

  Here, an arrow-shaped recess 27a-1 as shown in FIG. 4A is formed on the end face of the main body side coupling 27a, and the end face of the container side coupling 26a is shown in FIG. 4B. The convex part 26a-1 of the same shape (arrow shape) as shown in FIG.

  Similarly, with respect to the other cyan, yellow and black toner containers 12b to 12d, the main body side couplings 27b, 27c and 27d have different arrow shapes as shown in FIGS. 5 (b) to 5 (d). Recesses 27b-1, 27c-1, and 27d-1 are formed, and the shape of these recesses 27b-1 to 27d-1 is the side of the magenta main body shown in FIGS. 4 (a) and 5 (a). It is also different from the shape of the recess 27a-1 formed in the coupling 27a. That is, all the concave portions 27a-1 to 27d-1 have different shapes. Although not shown in the drawings, the end surfaces of the cyan, yellow, and black container side couplings 26b to 26d are provided with respective concave portions 27b- formed in the main body side couplings 27b to 27d shown in FIGS. Convex portions 26b-1 to 26d-1 having the same shape and fitted to 1 to 27d-1 are provided so as to project.

  Thus, for example, when the magenta toner container 12a is mounted at a predetermined location in the apparatus main body 100, the container side coupling 26a engages with the main body side coupling 27a as shown in FIG. It is moved in the direction of arrow a in FIG. 6 against the biasing force of the spring. At this time, when the toner container 12a is mounted in a proper position, the convex portion 26a-1 of the container side coupling 26a provided in the toner container 12a is fitted into the concave portion 27a-1 of the main body side coupling 27a. Since the main body side coupling 27a is moved in the direction of arrow b in FIG. 6 by the biasing force of the spring, the couplings 26a and 27a are normally connected to each other. On the other hand, even if the toner containers 12b to 12d other than the magenta toner container 12a are erroneously installed in the mounting position of the magenta toner container 12a, a container side coupling 26b (not shown) of these toner containers 12b to 12d is used. The convex portions 26b-1 to 26d-1 (not shown) formed on the .about.26d do not fit into the concave portions 27a-1 of the main body side coupling 27a for magenta, so that the user can use the toner containers 12b to 12d. You can notice the wrong insertion.

  Then, for example, when the magenta toner container 12a is mounted at a predetermined position and the container side coupling 26a and the main body side coupling 27a are connected as described above, they mesh with the ratchet 28 as shown in FIG. Since the rack 29 moves linearly in the direction of the arrow in FIG. 7 in conjunction with the closing operation of the top cover 100a (see FIG. 1), which is the main body cover, the ratchet 28 is rotationally driven by the linear movement, and the rotation is coupled to the coupling 27a. , 26a and transmitted to the container shutter 25, and since the container shutter 25 rotates in the same direction, a toner supply port (not shown) of the toner container 12a is opened to supply toner to the developing device 4a (see FIG. 1). Is possible. When the top cover 100a is opened when the toner container 12a is replaced, the rack 29 is linearly moved in the reverse direction in conjunction with the operation to rotate the ratchet 28 in the reverse direction. 27a, 26a is transmitted to the container shutter 25, and the container shutter 25 reverses, and the toner supply port of the toner container 12a is closed by the container shutter 25. For this reason, even if the toner container 12a is removed for replacement or the like, toner leakage from the toner container 12a is reliably prevented.

  As described above, in the present embodiment, the concave and convex shapes of the container side couplings 26a to 26d and the main body side couplings 27a to 27d corresponding to the container side couplings 26a to 26d are changed for each toner container 12a to 12d. Even if it is attempted to mount 12a to 12d at a position other than the normal position of the apparatus main body 100, the container side couplings 26a to 26d and the main body side couplings 27a to 27d are not fitted to each other. Always attach 12d correctly in the correct position. Therefore, according to the present embodiment, erroneous insertion of the toner containers 12a to 12d can be reliably prevented without causing an increase in the number of parts, and problems such as color toner mixing can be solved.

  In the present embodiment, the convex portions 26a-1 to 26d-1 of the container side couplings 26a to 26d and the corresponding concave portions 27a-1 to 27d-1 of the main body side couplings 27a to 27d are formed in an arrow shape. Therefore, as described above, the erroneous insertion of the toner containers 12a to 12d can be surely prevented, and if the direction of the arrow is set as the insertion direction of the toner containers 12a to 12d, the insertion direction of the toner containers 12a to 12d can be determined by the user. Can be directed.

  The concave and convex shapes of the container side couplings 26a to 26d and the corresponding main body side couplings 27a to 27d are alphabets representing the color of each toner, for example, “M” for magenta, “C” for cyan, “Y” for yellow. If black is “K”, the user can prevent erroneous insertion of the toner containers 12a to 12d, and the user can also know the color of the toner in the toner containers 12a to 12d installed.

  Even if the colors are changed from each other in place of the concave and convex shapes of the container side couplings 26a to 26d and the corresponding main body side couplings 27a to 27d, the same effect as described above can be obtained. For example, if magenta, cyan, yellow, and black are used, erroneous insertion of the toner containers 12a to 12d is visually prevented, and the user also knows the color of the toner in the toner containers 12a to 12d that are installed. Can do.

  Next, another embodiment of the present invention will be described with reference to FIGS.

  8A is a perspective view of the main body side coupling, FIG. 8B is a perspective view of the container side coupling, and FIGS. 9A to 9D are front views of the main body side coupling. In the figure, the same elements as those shown in FIGS. 4 and 5 are denoted by the same reference numerals, and description thereof will be omitted below.

  The present embodiment is the axial center of the container-side coupling 26a (-26d), and the cylindrical convex portions 26a-2 (-26d-2) are provided on the surfaces of the convex portions 26a-1 (26d-1). The protrusions 26a-2 (up to 26d-2) are fitted to the projecting portions and the axial centers of the main body side couplings 27a to 27d where the recesses 27a-1 to 27d-1 are formed. For this purpose, circular hole-shaped concave portions 27a-2 to 27d-2 are formed. Here, the diameters of the convex portions 26a-2 (to 26d-2) and the concave portions 27a-2 to 27d-2 are larger than the widths of the convex portions 26a-1 (to 26d-1) and the concave portions 27a-1 to 27d-1. Is also set larger.

  Therefore, in the present embodiment, when the container side coupling 26a (to 26d) and the apparatus main body side coupling 27a to 27d are connected, the arrow-shaped convex portion 26a-1 (to 26d-1) and the concave portion Before the fitting of 27a-1 to 27d-1, the convex portion 26a-2 (-26d-2) and the concave portion 27a-2-27d-2 are fitted, and both couplings 26a (-26d) and 27a-2 are fitted. The centering of ˜27d-2 is performed, and the subsequent projections 26a-1 (˜26d-1) and the recesses 27a-1 to 27d-1 are easily and reliably fitted.

  In addition, in order to make fitting with convex part 26a-2 (-26d-2) and recessed part 27a-2 to 27d-2 easy, you may form a taper (chamfering or R surface) in these front-end | tips. Further, the cross-sectional shapes of the convex portions 26a-2 (˜26d-2) and the concave portions 27a-2 to 27d-2 are not limited to a circular shape, and the same effect can be obtained even if they are notched circular shapes. .

  In the above, the embodiment in which the present invention is applied to a full-color laser beam printer has been described. However, the present invention is similarly applied to any color image forming apparatus such as another color printer or a color copying machine. Of course, it is applicable.

1 is a front sectional view of a color image forming apparatus according to the present invention. FIG. 3 is a perspective view of a toner container of the color image forming apparatus according to the present invention. FIG. 4 is a side view of a coupling portion of a toner container of the color image forming apparatus according to the present invention. (A) is a perspective view of a main body side coupling, (b) is a perspective view of a container side coupling. (A)-(d) is a front view of a main body side coupling. FIG. 5 is a partial side view showing a coupling state when the toner container is mounted. FIG. 6 is a partial front view showing an opening / closing operation of a container shutter of a toner container by an opening / closing operation of a top cover. (A) is a perspective view of a main body side coupling, (b) is a perspective view of a container side coupling. (A)-(d) is a front view of a main body side coupling.

Explanation of symbols

1M Magenta image forming unit 1C Cyan image forming unit 1Y Yellow image forming unit 1BK Black image forming unit 2a to 2d Photosensitive drum 3a to 3d Charger 4a to 4d Developing device 5a to 5d Transfer roller 6a to 6d Drum cleaning device 7 Intermediate transfer belt 8 Secondary transfer counter roller 9 Tension roller 10 Secondary transfer roller 11 Belt cleaning device 12a to 12d Toner container 13 Laser scanner unit (LSU)
DESCRIPTION OF SYMBOLS 14 Paper feed cassette 15 Pickup roller 16 Feed roller 17 Retard roller 18 Conveyance roller pair 19 Registration roller pair 20 Conveyance roller pair 21 Paper discharge tray 22 Fixing device 23 Paper discharge roller pair 24 Paper discharge device 25 Container shutter 26a-26d Container side cup Ring 26a-1 to 26d-1 Convex part of container side coupling 26a-2 to 26d-2 Convex part of container side coupling 27a to 27d Main body side coupling 27a-1 to 27d-1 Concave part 27a to main body side coupling 27a −2 to 27d-2 Concave portion of main body side coupling 28 Ratchet 29 Rack 100 Image forming apparatus main body 100a Top cover (main body cover)
L, L 'transport path

Claims (5)

A plurality of toner containers containing color toners for replenishment can be mounted. When each toner container is mounted on the apparatus main body, the coupling on the toner container side and the coupling on the apparatus main body side are connected by uneven fitting. In the color image forming apparatus in which the toner replenishing port of each toner container is opened and closed by rotating the container shutter of each toner container via both the couplings from the apparatus main body side,
2. A color image forming apparatus according to claim 1, wherein the coupling on the toner container side and the corresponding concave and convex shape or / and color of the coupling on the apparatus main body side are changed for each toner container.   2. The color image forming apparatus according to claim 1, wherein the concave and convex shapes of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto are arrow shapes.   2. The color image forming apparatus according to claim 1, wherein the concave and convex shapes of the coupling on the toner container side and the coupling on the apparatus main body side corresponding thereto are alphabets representing the color of each toner.   2. A color image forming apparatus according to claim 1, wherein the coupling on the toner container side and the corresponding coupling color on the apparatus main body side are the colors of the respective toners. 5. The projections and recesses to be fitted before the projections and recesses are fitted are formed at the axial center of the coupling on the toner container side and the coupling on the apparatus main body side. A color image forming apparatus according to claim 1.

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