JP5622959B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus.

  2. Description of the Related Art Conventionally, in an electrophotographic image forming apparatus, development processing is performed by supplying toner from a developing unit to an electrostatic latent image formed on the surface of a photosensitive drum or the like. The toner used for such development processing is supplied to the developing device from a toner container that is detachable from the main body of the image forming apparatus.

  The toner container includes a container body having a discharge port for discharging toner and a shutter for opening and closing the discharge port. For example, Patent Document 1 discloses a toner container (see “toner container 20”) provided with a shutter (see “shutter cylinder 60”) that is rotatably mounted on a container body and opens and closes a discharge port according to the rotation. It is disclosed. In this prior art, the shutter closing position is locked by a lock member provided in the toner container, thereby preventing the toner from leaking out of the toner container during transportation of the toner container.

JP 2009-168856 A

  The above prior art is based on the premise that the toner container is transported alone (see paragraphs 0151 and 0152 of Patent Document 1). In this case, the toner container is packed separately from the main body of the apparatus, and accordingly, the capacity and the number of packing materials increase, leading to an increase in packing cost.

  Further, in the image forming apparatus including the toner container having the above-described configuration, there is a possibility that the toner container is mounted on the apparatus main body in a state where the discharge port is closed by the shutter due to an erroneous operation by an operator such as a user. However, in Patent Document 1, no means for solving this problem is taken, and it is difficult to prevent an erroneous operation by the operator.

  In view of the above circumstances, an object of the present invention is to reliably prevent toner from leaking from a toner container during transportation, to reduce packing costs, and to prevent erroneous operation by an operator.

  The image forming apparatus of the present invention has a discharge port for discharging the toner and a container main body that stores the toner, a shutter that moves between a position that opens the discharge port and a position that closes the discharge port, A toner container including a lever connected to a shutter; a developing device to which toner is supplied from the toner container; an apparatus main body to which the toner container is detachably mounted; and an upper surface of the apparatus main body. A discharge tray and a cover attached to the upper front portion of the apparatus main body so as to be openable and closable. The toner container is provided on the upper surface side of the developing device below the cover, and the lever A first position that does not interfere with the cover; a second position that causes the shutter to close the discharge opening and interferes with the cover; and Potter opens the said discharge port, and, characterized in that it is movable between a third position, not interfering with the cover.

  With such a configuration, if the toner container is mounted on the apparatus main body with the lever in the first position, the cover can be closed with the shutter closing the discharge port. Accordingly, the toner container can be shipped together with the apparatus main body while reliably preventing the toner from leaking from the toner container during transportation. This eliminates the need for a packaging material dedicated to the toner container, thereby reducing the packaging cost.

  Further, when the image forming apparatus is used, if the toner container is attached to the apparatus main body with the lever in the second position, the lever interferes with the cover, thereby preventing the cover from being closed. Therefore, it is possible to make the operator recognize that the cover is accidentally closed while the discharge port is closed, thereby preventing subsequent erroneous operations. Further, when the lever is moved to the third position when the image forming apparatus is used, the cover is closed with the shutter opening the discharge port, and the image forming operation can be performed.

  The image forming apparatus may further include an exposure unit disposed below the paper discharge tray.

  The image forming apparatus includes a conveyance path for paper passing below the developing unit, a reversing path for duplex printing formed below the conveyance path, and a paper feed cassette provided below the reversing path; May be further provided.

  According to the present invention, it is possible to reliably prevent the toner from leaking from the toner container during transportation, to reduce the packing cost, and to prevent an erroneous operation by an operator.

1 is a schematic diagram illustrating an outline of a printer according to an embodiment of the present invention. 1 is a perspective view illustrating a state in which an upper cover is opened in a printer according to an embodiment of the present invention. FIG. 4 is a perspective view from the upper right side showing the toner container in the printer according to the embodiment of the present invention. FIG. 4 is a perspective cross-sectional view from the rear side showing the toner container in the printer according to the embodiment of the present disclosure. FIG. 3 is an exploded perspective view illustrating a toner container in the printer according to the embodiment of the invention. FIG. 4 is a perspective view from the right front side showing a state where a lever is removed from the container body in the toner container of the printer according to the embodiment of the present invention. FIG. 4 is a right side view illustrating a toner container in the printer according to the embodiment of the present disclosure. FIG. 4 is a perspective view illustrating a state in which the upper cover is closed in the printer according to the embodiment of the invention. In the toner container of the printer according to the embodiment of the present invention, (a) is a right side view showing a state where the lever is in the first position, and (b) shows a state where the lever is in the second position. It is a right view, (c) is a right view which shows the state which has a lever in a 3rd position. In the toner container of the printer according to the embodiment of the present invention, (a) is a perspective view from below showing a state where the lever is in the first position, and (b) is a lever in the second position. It is a perspective view from the lower side which shows a state, (c) is a perspective view from the lower side which shows the state which has a lever in the 3rd position. In the toner container of the printer according to the embodiment of the present invention, (a) is a schematic view showing a state where the lever gripping portion is engaged with the stopper, and (b) is a diagram showing the lever gripping portion being the stopper. It is a schematic diagram which shows the state in the middle of changing to the engagement cancellation | release state from the engagement state with respect to (c), (c) is a schematic diagram which shows the state by which the engagement with respect to the stopper of the holding part of a lever was cancelled | released. (A) is a side view which shows the shape of the coupling for transmission in the printer which concerns on one Embodiment of this invention, (b)-(d) is the coupling for transmission in the printer which concerns on another different embodiment. It is a side view which shows the shape of.

  First, the overall configuration of an electrophotographic printer 1 as an image forming apparatus will be described with reference to FIG. FIG. 1 is a schematic diagram showing an outline of a printer according to an embodiment of the present invention. Hereinafter, the left side in FIG. 1 is the front side (front side) of the printer 1.

  The printer 1 includes a box-shaped printer main body 2 as an apparatus main body. A paper feed cassette 3 for storing paper (not shown) is accommodated in a lower portion of the printer main body 2. Is provided with a paper discharge tray 4. A toner container 5 as a toner container is detachably attached to the upper front portion of the printer main body 2, and an upper cover 6 is attached above the toner container 5 so as to be openable and closable.

  An exposure unit 7 composed of a laser scanning unit (LSU) is disposed below the discharge tray 4 above the printer body 2, and an image forming unit 8 is provided below the exposure unit 7. Yes. The image forming unit 8 is rotatably provided with a photosensitive drum 10 as an image carrier. Around the photosensitive drum 10, a charger 11, a developing device 12, a transfer roller 13, and a cleaning device are provided. The apparatus 14 is disposed along the rotation direction of the photosensitive drum 10 (see arrow X in FIG. 1).

  A paper transport path 15 is provided inside the printer main body 2. A paper feed unit 16 is provided at the upstream end of the conveyance path 15, and a transfer unit 17 configured by the photosensitive drum 10 and the transfer roller 13 is provided at a middle portion of the conveyance path 15. Is provided with a fixing device 18, and a paper discharge unit 20 is provided at the downstream end of the conveyance path 15. A reverse path 21 for double-sided printing is formed below the transport path 15.

  Next, an image forming operation of the printer 1 having such a configuration will be described.

  When the printer 1 is turned on, various parameters are initialized, and initial setting such as temperature setting of the fixing device 18 is executed. Then, when image data is input from a computer or the like connected to the printer 1 and an instruction to start printing is given, an image forming operation is executed as follows.

  First, after the surface of the photosensitive drum 10 is charged by the charger 11, exposure corresponding to the image data is performed on the photosensitive drum 10 by laser light from the exposure device 7 (see the two-dot chain line P in FIG. 1). The electrostatic latent image is formed on the surface of the photosensitive drum 10. Next, the electrostatic latent image is developed by the developing device 12 into a toner image with toner.

  On the other hand, the sheet taken out from the sheet cassette 3 by the sheet feeding unit 16 is conveyed to the transfer unit 17 in synchronization with the above-described image forming operation, and the toner image on the photosensitive drum 10 is transferred to the sheet by the transfer unit 17. Is transferred to. The sheet on which the toner image has been transferred is conveyed downstream in the conveyance path 15 and enters the fixing device 18 where the toner image is fixed on the sheet. The paper on which the toner image is fixed is discharged from the paper discharge unit 20 to the paper discharge tray 4. The toner remaining on the photosensitive drum 10 is collected by the cleaning device 14.

  Next, the details of the toner container 5 will be described mainly with reference to FIGS. FIG. 2 is a perspective view showing a state where the upper cover is opened in the printer according to the embodiment of the present invention. FIG. 3 is a perspective view from the upper right side showing the toner container in the printer according to the embodiment of the present invention. FIG. 4 is a perspective sectional view from the rear side showing the toner container in the printer according to the embodiment of the present invention. FIG. 5 is an exploded perspective view showing the toner container in the printer according to the embodiment of the invention. FIG. 6 is a perspective view from the right front side showing a state in which the lever is removed from the container body in the toner container of the printer according to the embodiment of the present invention. FIG. 7 is a right side view showing the toner container in the printer according to the embodiment of the invention.

  An arrow Fr attached to each figure indicates the front side (front side) of the printer 1 (the same applies to FIG. 8 and subsequent figures). Since FIG. 4 is a perspective sectional view from the rear side, the left-right relationship on the drawing and the actual left-right relationship are reversed. That is, the right side of the drawing in FIG. 4 is the left side of the toner container 5, and the left side of the drawing in FIG. 4 is the right side of the toner container 5.

  As shown in FIG. 2, the toner container 5 is disposed below the upper cover 6. The toner container 5 is detachably attached to the printer main body 2 on the upper surface side of the developing device 12 (see FIG. 1). As shown in FIG. 3, the toner container 5 has a shape that is long in the left-right direction.

  As shown in FIG. 4, the toner container 5 includes a box-shaped container main body 22 having an open upper surface, a transport screw 23 as a rotating member housed in the rear lower portion of the container main body 22, A stirring paddle 24 as a rotating member accommodated in the approximate center, a lid 25 covering the upper surface of the container body 22, a lever 26 attached to the right end of the container body 22, and the right end of the container body 22 together with the lever 26 And a shutter 28 attached to the lower right end portion of the container main body 22. In FIGS. 6 and 7, the transmission member 27 is not shown.

  The container body 22 contains toner and has a shape that is long in the left-right direction. A toner filling port 31 is formed in the left end wall 30 of the container body 22, and the toner filling port 31 is closed by a cap 32. A main body side flange portion 33 is provided on the outer periphery of the upper end of the container main body 22.

  A cylindrical discharge duct 34 protrudes rightward from the lower right end of the container body 22, and an opening 36 is formed at the right end of the discharge duct 34. A discharge port 35 for discharging the toner is formed at the bottom of the discharge duct 34. A seal member 37 is attached to the lower outer periphery of the discharge duct 34, and a communication port 38 is formed in the seal member 37 at a position corresponding to the discharge port 35.

  As shown in FIG. 5, a cylindrical boss 42 having a communication hole 41 projects from the center of the right end wall 40 of the container body 22 toward the right side (outside). On the right surface (outer surface) of the right end wall 40 of the container main body 22, a regulating rib 43 projects from the rear of the boss 42. A protrusion 44 is provided below the regulating rib 43.

  As best shown in FIG. 6, a stopper 45 protrudes from the front upper side of the boss 42 on the right surface (outer surface) of the right end wall 40 of the container body 22. The stopper 45 is connected to the regulating rib 43 by a connecting rib 46.

  The stopper 45 includes a curved piece 47 that is curved in an arc shape around the boss 42, an engagement piece 48 that is coupled to the upper rear side of the curved piece 47, and a reinforcing piece 49 that is disposed above the engagement piece 48. The connecting piece 50 that connects the engaging piece 48 and the reinforcing piece 49 is provided. Auxiliary piece 51 protrudes rearward from the lower part of the curved piece 47 and the central part in the vertical direction. The engagement piece 48 includes a pair of upper and lower engagement plates 52 and has a U-shape in the horizontal direction. The reinforcing piece 49 and each engagement plate 52 are provided with inclined portions 53, respectively. Each inclination part 53 inclines so that the protrusion length from the right surface of the right end wall 40 of the container main body 22 may become long toward the back side from the front side.

  As best shown in FIG. 4, the transport screw 23 has a shape that is long in the left-right direction, and is accommodated in the container body 22 in a rotatable state. The conveying screw 23 includes a rod-shaped rotating shaft 54 and a spiral fin 55 provided concentrically on the outer periphery of the rotating shaft 54. The left end portion of the rotation shaft 54 is pivotally supported on the left end wall 30 of the container body 22. The right side portions of the rotating shaft 54 and the spiral fin 55 are inserted into the discharge duct 34. The right end portion of the rotating shaft 54 protrudes to the right from the discharge duct 34 through the opening 36, and a conveying gear 56 is fixed to the protruding portion.

  The stirring paddle 24 is disposed on the upper front side of the conveying screw 23 and has a shape that is long in the left-right direction. The stirring paddle 24 is accommodated in the container body 22 in a rotatable state. The stirring paddle 24 includes a support frame 57 having a frame plate shape, and a sheet-like stirring blade 58 supported by the support frame 57. The left and right ends of the support frame 57 are pivotally supported by the left end wall 30 and the right end wall 40 of the container body 22. The stirring blade 58 is made of a synthetic resin sheet such as Lumirror (trade name), for example. As shown in FIG. 4, one side of the stirring blade 58 is fixed to the support frame 57 along the left-right direction.

  A lid body side flange portion 59 having a shape corresponding to the body side flange portion 33 of the container body 22 is provided at the lower end of the lid body 25, and the body side flange portion 33 and the lid body side flange portion 59 are ultrasonically welded. Thus, the container body 22 and the lid body 25 are integrated.

  As shown in FIG. 7, the lever 26 includes a lever body 60 having a circular outline in a side view. The lever body 60 is mounted on the outer periphery of a boss 42 provided on the right end wall 40 of the container body 22, whereby the lever 26 is rotatably supported by the container body 22, and the lever 26 is supported at the right end of the container body 22. It rotates along the right surface of the wall 40. On the upper part of the lever main body 60, a gripping portion 61 is provided projecting radially outward. The upper end of the grip 61 extends to the right side of the lid body 25. As shown in FIG. 6, the gripping portion 61 has a hollow shape, and a recess 62 is formed in the front lower portion of the gripping portion 61. The lever main body 60 is provided with a protruding piece 63 on the front side of the grip portion 61 toward the radially outer side. A lever side gear 64 (see FIG. 7) is provided on the outer periphery of the rear lower portion of the lever main body 60.

  As best shown in FIG. 5, the transmission member 27 includes a disk-shaped transmission member main body 65. On the right surface (outer surface) of the transmission member main body 65, a transmission coupling 66 having a triangular shape in a side view is projected. The transmission coupling 66 is detachably coupled to a driving coupling (not shown) connected to a driving means (not shown) such as a motor. Therefore, when the driving means rotates, this rotation is transmitted to the transmission member 27, and the transmission member 27 rotates.

  An insertion piece 67 projects from the left surface (inner surface) of the transmission member main body 65. The insertion piece 67 is inserted into the communication hole 41 provided in the boss 42 of the container body 22 and is connected to the support frame 57 of the stirring paddle 24. Therefore, when the transmission member 27 rotates, this rotation is transmitted to the agitation paddle 24 and the agitation paddle 24 rotates, and the toner in the container body 22 is conveyed to the conveying screw 23 side while being agitated. .

  A transmission gear 68 is provided on the outer periphery of the transmission member main body 65. The transmission gear 68 meshes with the conveyance gear 56 of the conveyance screw 23. As a result, when the transmission member 27 rotates, the rotation is transmitted to the conveying screw 23 to rotate the conveying screw 23, and the toner in the container main body 22 is discharged from the discharge port 35. It has been introduced inside. An opening 69 that is curved in an arc shape is provided on the radially outer side of the transmission member main body 65.

  The shutter 28 has a substantially cylindrical shape, and is rotatably mounted on the outer periphery of the discharge duct 34 of the container body 22. A discharge opening 70 is formed on the lower surface of the shutter 28. As shown in FIG. 7, a substantially fan-shaped guide piece 71 projects from the shutter 28. The guide piece 71 is provided with an arcuate guide hole 72, and the protrusion 44 of the container body 22 is engaged with the guide hole 72.

  As best shown in FIG. 4, the shutter 28 is provided with a cylindrical bearing portion 73, and the right end portion of the rotation shaft 54 of the conveying screw 23 is pivotally supported on the bearing portion 73. A gear storage portion 74 is provided on the right side of the bearing portion 73, and the transport gear 56 is stored in the gear storage portion 74. As best shown in FIG. 5, a communication opening 75 is formed in the gear storage portion 74, and the transport gear 56 can be stored in the gear storage portion 74 via this communication opening 75. Yes.

  The shutter 28 is provided with a shutter side gear 76, and the lever 26 is connected to the shutter 28 by the shutter side gear 76 meshing with the lever side gear 64 of the lever 26. As a result, the shutter 28 rotates in the opposite direction to the lever 26 as the lever 26 rotates. An oval lock piece 77 is provided at the right end of the shutter 28. A pressing protrusion 78 is provided on the lower side of the shutter 28 on the right side of the discharge opening 70.

  Next, the upper cover 6 will be described with reference to FIG. FIG. 8 is a perspective view showing a state in which the upper cover is closed in the printer according to the embodiment of the present invention. Hereinafter, terms such as up, down, left and right, front and back are used on the basis of a state in which the upper cover 6 is closed (see FIG. 8).

  As shown in FIG. 8, the upper cover 6 includes an upper plate 81 that covers the upper surface side of the toner container 5, and a front plate 82 that is bent downward from the front end of the upper plate 81 and covers the front surface side of the toner container 5. And has a substantially L-shaped cross section.

  The rear end portion of the upper plate 81 is attached to the printer main body 2 via a hinge portion (not shown), and the upper cover 6 rotates in the vertical direction with the hinge portion serving as a fulcrum, thereby The upper cover 6 is configured to be opened and closed. On the upper surface side of the upper plate 81, an operation unit (not shown) constituted by an LCD (Liquid Crystal Display), an ELD (Electronic Luminescent Display) or the like is provided, and keys provided on the operation unit are provided. Various functions of the printer 1 are realized by the user operating buttons and buttons.

  A base portion 83 having a rectangular shape in a side view is projected on the inner surface (lower surface in the present embodiment) of the upper plate 81, and a trapezoidal protrusion 84 is provided on the lower surface side of the base portion 83. A first guide surface 85 is formed at the front end portion of the projection portion 84 so as to be inclined backward and downward, and a second guide surface 86 that is inclined forward and directed downward is formed at the rear end portion of the projection portion 84. Is formed.

  In the configuration as described above, the operation of the lever 26 will be described mainly with reference to FIGS. 9A is a right side view illustrating a state where the lever is in the first position, and FIG. 9B is a right side view illustrating the lever in the second position in the toner container of the printer according to the embodiment of the present invention. It is a right view which shows a certain state, (c) is a right view which shows the state which has a lever in a 3rd position. FIGS. 10A and 10B are perspective views from below showing a state in which the lever is in the first position, and FIG. 10B is a second view showing the lever in the toner container of the printer according to the embodiment of the present invention. It is a perspective view from the lower side which shows the state which exists in this position, (c) is a perspective view from the lower side which shows the state which has a lever in the 3rd position. FIGS. 11A and 11B are schematic views showing a state where the gripping portion of the lever is engaged with the stopper in the toner container of the printer according to the embodiment of the present invention, and FIG. It is a schematic diagram which shows the state in the middle of the holding | grip part shifting from the engagement state with respect to a stopper to a disengagement state, (c) is a schematic diagram which shows the state by which the engagement with respect to the stopper of the holding part of a lever was cancelled | released. It is. In FIG. 11, only a part of the engagement piece 48 of the stopper 45 is displayed.

  When the printer 1 is shipped, the gripping portion 61 of the lever 26 is tilted forward as shown in FIG. 9A, and the shutter 28 is connected to the outlet of the container body 22 as shown in FIG. 35 is closed. Further, as shown in FIG. 11A, the rotation of the lever 26 is restricted by the gripping portion 61 of the lever 26 engaging with the stopper 45. The position of the lever 26 at this time is referred to as a “first position”.

  When the upper cover 6 is closed with the lever 26 in the first position as described above, the first guide surface 85 of the protrusion 84 of the upper cover 6 grips the lever 26 as shown in FIG. It faces the part 61. At that time, the gripping portion 61 of the lever 26 and the protruding portion 84 of the upper cover 6 do not interfere with each other, and the closing of the upper cover 6 is allowed.

  On the other hand, when the printer 1 is used, as indicated by an arrow A in FIG. 9A, an operator such as a user or a serviceman presses the grip portion 61 of the lever 26 rearward. By this pressing, as shown in FIG. 11B, the gripping portion 61 of the lever 26 is inclined to each inclined portion 53 of the stopper 45 (in FIGS. 11A to 11C, the upper engaging plate 52 is inclined). (Only the portion 53 is displayed) is moved to the rear side. At this time, the pressing force necessary to rotate the lever 26 rearward by engaging the recess 62 (see FIG. 6 and the like) provided in the gripping portion 61 of the lever 26 with the lower engaging plate 52. Is slightly smaller.

  When the gripping portion 61 of the lever 26 is continuously pressed to the rear side, the gripping portion 61 of the lever 26 gets over each inclined portion 53 of the stopper 45 as shown in FIG. As a result, as shown in FIG. 9B, the engagement of the grip portion 61 of the lever 26 with the stopper 45 is released, and the lever 26 rotates to a position slightly rearward of the first position. The position of the lever 26 at this time is referred to as a “second position”. When the lever 26 rotates from the first position to the second position in this way, the shutter 28 also slightly rotates along with this, but the shutter 28 still remains in the container body 22 as shown in FIG. The discharge port 35 is closed.

  Even if the upper cover 6 is to be closed while the lever 26 is in the second position as described above, the gripping portion 61 of the lever 26 and the protrusion 84 of the upper cover 6 interfere with each other as shown by a one-dot chain line in FIG. Therefore, the upper cover 6 is prevented from closing.

  Next, as shown by the arrow B in FIG. 9B, when the lever 26 is further pushed rearward by the operator, the lever 26 is moved to the second position as shown in FIG. 9C. Rotate further to the rear position. The position of the lever 26 at this time is referred to as a “third position”. When the upper cover 6 is closed with the lever 26 in the third position as described above, the second guide surface 86 of the protrusion 84 of the upper cover 6 is moved as shown by a two-dot chain line in FIG. It faces the gripping part 61 of the lever 26. At that time, the gripping portion 61 of the lever 26 and the protruding portion 84 of the upper cover 6 do not interfere with each other, and the closing of the upper cover 6 is allowed.

  As described above, when the lever 26 rotates to the third position, the shutter 28 connected to the lever 26 also rotates as indicated by the arrow C in FIG. 9B. Accordingly, as shown in FIG. 10C, the shutter 28 opens the discharge port 35 of the container body 22, and the inside of the container body 22 and the inside of the developing device 12 communicate with each other. Therefore, toner can be supplied from the toner container 5 to the developing device 12.

  When the toner container 5 is replaced, the discharge port 35 of the container body 22 is closed by the shutter 28 by returning the lever 26 to the second position. In this state, the toner container 5 may be pulled out from the printer main body 2.

  As described above, in the present embodiment, the toner container 5 is attached to the printer main body 2 with the lever 26 in the first position, so that the shutter 28 closes the discharge port 35 of the container main body 22 and the upper cover. 6 can be closed. Accordingly, the toner container 5 can be shipped together with the printer body 2 while reliably preventing the toner from leaking from the toner container 5 during transportation. For this reason, a dedicated packing material for packing the toner container 5 is not required, and the packing cost can be reduced.

  Further, when the toner container 5 is attached to the printer main body 2 with the lever 26 in the second position when the printer 1 is used, the gripping portion 61 of the lever 26 is connected to the protrusion 84 of the upper cover 6. Interference prevents the upper cover 6 from closing. Therefore, it is possible to make the operator recognize that the upper cover 6 is about to be closed accidentally while the discharge port 35 of the container body 22 is closed, thereby preventing subsequent erroneous operations. Further, when the lever 26 is moved to the third position when the printer 1 is used, the upper cover 6 is closed with the shutter 28 opening the discharge port 35 of the container main body 22, and the image forming operation is performed. It becomes possible.

  Thus, by switching the position of the lever 26 between the first position, the second position, and the third position, it is possible to reliably prevent the toner from leaking from the toner container 5 during transportation, and to pack it. It is possible to reduce costs and prevent an erroneous operation by an operator.

  Further, when the lever 26 is in the first position, the gripping portion 61 of the lever 26 engages with the stopper 45 and the rotation of the lever 26 is restricted. Therefore, it is ensured that the lever 26 is in the first position. Can be maintained. Accordingly, during transportation of the printer 1, the lever 26 passes from the first position to the second position and rotates to the third position, and the shutter 28 opens the discharge port 35 of the container main body 22 to open the toner container. Thus, it is possible to prevent a problem that the toner leaks from 5.

  Further, when the grip portion 61 of the lever 26 shifts from the engaged state with the stopper 45 to the disengaged state, the grip portion 61 of the lever 26 is configured to get over each inclined portion 53 of the stopper 45. Therefore, it is possible to prevent the lever 26 that has once rotated from the first position to the second position from being restored to the first position.

  Further, when the upper cover 6 is closed, the first guide surface 85 and the second guide surface 86 provided on the protrusion 84 of the upper cover 6 are opposed to the gripping portion 61 of the lever 26, thereby Can be reliably maintained in the first position or the third position.

  In this embodiment, as shown in FIG. 12A, the transmission coupling 66 has a triangular shape in a side view, and a drive coupling (not shown) is detachably connected to the transmission coupling 66. ) Also has a triangular shape in side view corresponding to the transmission coupling 66. On the other hand, in another different embodiment, as shown in FIG. 12B, the transmission coupling 66 is substantially fan-shaped, or as shown in FIG. The transmission coupling 66 may have a rectangular shape as shown in FIG. In these cases, it is necessary to change the shape of the driving coupling (not shown) so that it can be connected to the transmission coupling 66. In particular, if the transmission coupling 66 and the driving coupling have different shapes for each destination, it is possible to prevent the toner container 5 having a different destination from being attached to the printer main body 2. It is possible to suppress problems associated with incorrect mounting.

  Although the case where the configuration of the present invention is applied to the upper cover 6 has been described in the present embodiment, the configuration of the present invention may be applied to a front cover, a side cover, and the like in other different embodiments.

  In the present embodiment, the case where the lever 26 and the shutter 28 are formed separately has been described. However, in another different embodiment, the lever 26 and the shutter 28 may be formed integrally.

  In the present embodiment, the case where the configuration of the present invention is applied to the printer 1 has been described. However, in another different embodiment, the configuration of the present invention is applied to an image forming apparatus other than the printer 1 such as a copying machine, a facsimile machine, or a multifunction peripheral. It may be applied.

1 Printer (image forming device)
2 Printer body (device body)
3 Paper cassette 4 Paper output tray 5 Toner container (toner container)
6 Upper cover 7 Exposure unit 12 Developing unit 15 Transport path 21 Reverse path 22 Container body 26 Lever 28 Shutter 35 Discharge port

Claims (3)

A container body having a discharge port for discharging toner and containing toner; a shutter that moves between a position for opening the discharge port and a position for closing the discharge port; and a lever connected to the shutter; A toner container comprising:
A developing device to which toner is supplied from the toner container;
An apparatus main body to which the toner container is detachably mounted;
A paper discharge tray provided on an upper surface of the apparatus body;
A cover attached to the upper front part of the apparatus main body so as to be openable and closable,
The toner container is provided on the upper surface side of the developing device below the cover,
The lever is
A first position that causes the shutter to close the discharge port and does not interfere with the cover;
A second position for causing the shutter to close the discharge port and interfering with the cover;
An image forming apparatus, wherein the shutter is provided so as to be movable between a third position where the discharge port is opened and the shutter does not interfere with the cover.   The image forming apparatus according to claim 1, further comprising an exposure unit disposed below the discharge tray. A conveyance path for paper passing under the developing unit;
A reverse path for double-sided printing formed below the transport path;
The image forming apparatus according to claim 1, further comprising a paper feeding cassette provided below the reversing path.