Image forming device to which toner container can be mounted

A technology of toner container and toner, which is applied in the direction of instruments, electric recording technology using charge pattern, equipment for electric recording technology using charge pattern, etc., which can solve the problems that hinder the extraction or installation of waste toner container, and cannot Use other purposes and other problems to achieve the effect of preventing re-use

Active Publication Date: 2018-01-02
KYOCERA DOCUMENT SOLUTIONS INC
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AI-Extracted Technical Summary

Problems solved by technology

[0005] However, in the conventional image forming apparatus, since a part of the empty container is deformed, it cannot be used for other purposes after it is used as a waste toner container.
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Abstract

An image forming device (10) is provided with a toner replenishing section (40), a waste toner recovery section (80), and a toner container (41). The toner container is configured so as to be capableof being removably mounted to each of the toner replenishing section and the waste toner recovery section. The toner container has: a first lever (61) which can be switched to a first position (P1) and to a second position (P2); and a second lever (62) which can be switched to a third position (P3) and to a fourth position (P4). The toner replenishing section has: a first operation section (101) which, in a process in which the toner container is mounted to the toner replenishing section, prevents the mounting of the toner container; and a second operation section (121) which switches the second lever to the fourth position. The waste toner recovery section has: a third operation section (102) which, in a process in which the toner container is mounted to the waste toner recovery section,prevents the mounting of the toner container; and a fourth operation section (142) which switches the first lever to the second position.

Application Domain

Electrographic process apparatus

Technology Topic

EngineeringElectrical and Electronics engineering +1

Image

  • Image forming device to which toner container can be mounted
  • Image forming device to which toner container can be mounted
  • Image forming device to which toner container can be mounted

Examples

  • Experimental program(1)

Example Embodiment

[0037] Hereinafter, an image forming apparatus 10 according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the vertical direction D1 is defined based on the state in which the image forming apparatus 10 is installed. In addition, the front-rear direction D2 is defined by taking the side where the toner container 41 and the waste toner container 81 are inserted with respect to the image forming apparatus 10 as the immediate side (front side). In addition, the image forming apparatus 10 is viewed from the front side (front side) to define the left-right direction D3.
[0038] [Image forming apparatus]
[0039] The image forming apparatus 10 is an apparatus having at least a printing function, for example, a color printer. The image forming apparatus 10 uses a developer containing toner to print an image on a printing paper as a sheet member. In addition, a specific example of the image forming apparatus 10 according to the embodiment of the present invention may be, for example, a printer, a copying machine, a facsimile machine, or a digital multifunction machine having the above-mentioned functions. In addition, although the image forming apparatus 10 can form color images, the image forming apparatus of the present invention may be capable of forming black and white images.
[0040] Such as figure 1 As shown, the image forming apparatus 10 is a so-called tandem color image forming apparatus. The image forming apparatus 10 includes a plurality of image forming units 1 to 4, an intermediate transfer unit 5, an exposure device 14, a secondary transfer device 15, a fixing device 16, a toner replenishing device 40 (the toner replenishing device of the present invention) Part), belt cleaning device 6, waste toner recovery device 80 (an example of waste toner recovery part of the present invention), operation display part 9 having a touch panel or liquid crystal display part, control part 8, supply Paper tray 17 and paper output tray 18. The above-mentioned structural elements are mounted on a housing 11 that constitutes an outer frame (not shown) or an inner frame of the image forming apparatus 10.
[0041] The image forming units 1 to 4 respectively form toner images of different colors on a plurality of photosensitive drums 21 arranged in parallel by a so-called electrophotographic method. The toner images are transferred onto the traveling (moving) intermediate transfer belt 5A in a sequential overlapping manner. in figure 1 In the example shown, from the downstream of the moving direction (arrow 19 direction) of the intermediate transfer belt 5A, the image forming section for black 1, the image forming section for yellow 2, the image forming section for cyan are sequentially arranged in the following order in a row The image forming section 3 and the image forming section 4 for magenta.
[0042] The image forming sections 1 to 4 are respectively provided below the intermediate transfer belt 5A. The image forming units 1 to 4 respectively include: a photosensitive drum 21 carrying toner images, a charging device 22, a developing device 23, a primary transfer device 24, and the like. The surface of the photosensitive drum 21 is charged by the charging device 22, and the surface of the charged photosensitive drum 21 is exposed and scanned by the exposure device 14. As a result, an electrostatic latent image is formed on the surface of the photosensitive drum 21. The developing device 23 uses toner to develop the electrostatic latent image. Then, the toner image on the photosensitive drum 21 is transferred to the intermediate transfer belt 5A by the primary transfer device 24.
[0043] The intermediate transfer unit 5 has an intermediate transfer belt 5A, a driving roller 7A, and a driven roller 7B. The intermediate transfer belt 5A carries toner images composed of toner images of multiple colors (four colors in this embodiment). The intermediate transfer belt 5A is rotatably supported by the driving roller 7A and the driven roller 7B, and can move while its surface is in contact with the surface of each photosensitive drum 21. If the intermediate transfer belt 5A is driven to rotate, its surface passes between the photosensitive drum 21 and the primary transfer device 24. At this time, the toner images of various colors carried on the plurality of photosensitive drums 21 are sequentially transferred onto the intermediate transfer belt 5A in an overlapping manner.
[0044] A toner replenishing device 40 is provided above the intermediate transfer unit 5. The toner supply device 40 can attach and detach four toner containers 41 corresponding to various colors of black, yellow, cyan, and magenta. The structure of the toner replenishing device 40 will be described later.
[0045] The secondary transfer device 15 transfers the toner image transferred on the intermediate transfer belt 5A to the printing paper conveyed from the paper feed tray 17. The printing paper on which the toner image has been transferred is conveyed to the fixing device 16 by a conveying unit not shown. The fixing device 16 has a heating roller 16A and a pressure roller 16B. The fixing device 16 heats and presses the printed sheet onto which the toner image is transferred, and conveys it. As a result, the toner image is melted and fixed on the printing sheet. The printed sheet on which the toner image is fixed is further conveyed downstream, and is discharged and held on the disc-shaped paper discharge tray 18 arranged above the intermediate transfer unit 5.
[0046] The belt cleaning device 6 removes and recovers the waste toner remaining on the surface of the intermediate transfer belt 5A, and conveys the recovered waste toner to the waste toner recovery device 80. The belt cleaning device 6 is arranged on the front side of the intermediate transfer unit 5. The belt cleaning device 6 includes a cleaning roller 25 as a cleaning member, a screw conveying member 26, and a toner cartridge 27. The cleaning roller 25 is arranged opposite to the driven roller 7B, and its surface is in contact with the intermediate transfer belt 5A. The length of the cleaning roller 25 in the front-rear direction D2 is substantially the same as that of the intermediate transfer belt 5A. The cleaning roller 25 is rotatably supported in the toner cartridge 27. By inputting a rotational driving force to the support shaft of the cleaning roller 25, the cleaning roller 25 rotates.
[0047] The cleaning roller 25 rotates in contact with the intermediate transfer belt 5A to remove the toner remaining on the surface of the intermediate transfer belt 5A after being transferred by the secondary transfer device 15. Hereinafter, the toner removed by the cleaning roller 25 is referred to as “waste toner”. The waste toner enters the toner box 27 by the action of gravity or the rotational force of the cleaning roller 25 and is recovered. The waste toner recovered in the toner box 27 is conveyed by the screw conveying member 26. A discharge port (not shown) is formed on the rear end side of the bottom surface of the toner cartridge 27. By rotating the screw conveying member 26, the waste toner is conveyed to the discharge port in the toner box 27.
[0048] The waste toner recovery device 80 is provided below the toner box 27. The waste toner recovery device 80 can attach and detach the waste toner container 81. If the waste toner is discharged from the discharge port of the belt cleaning device 6, the waste toner is stored in the waste toner container 81 installed in the waste toner recovery device 80. That is, the toner remaining on the surface of the intermediate transfer belt 5A is stored in the waste toner container 81 as waste toner after being removed by the belt cleaning device 6. In this embodiment, the waste toner container 81 can also be used as an empty toner container 41 used in the toner replenishing device 40. In addition, the waste toner recovery device 80 will be described later.
[0049] [Toner Replenishing Device]
[0050] Below, refer to Figure 2 to Figure 1 1. The toner replenishing device 40 will be described. Such as figure 2 As shown, the toner replenishing device 40 is composed of a toner container 41 and a container mounting portion 42 to which the toner container 41 is mounted. In addition, in each figure, taking the installation posture of the toner replenishing device 40 on the housing 11 as a reference, the vertical direction is referred to as the up-down direction D1, and the direction in which the toner container 41 is attached to and detached from the housing 11 The (insertion and extraction direction) is referred to as the front-rear direction D2, and the horizontal direction viewed from the front of the toner replenishing device 40 is referred to as the left-right direction D3.
[0051] The toner container 41 contains toner for replenishing the developing device 23. In this embodiment, four toner containers 41 corresponding to various colors of black, yellow, cyan, and magenta are provided in the toner replenishing device 40. In addition, the toner container 41 for black is formed to have a larger outer diameter than the toner container 41 of other colors. Except for the above-mentioned point, all the toner containers 41 have the same structure. Hereinafter, unless otherwise specified, the toner container 41 for black will be described.
[0052] The toner container 41 is formed in a shape elongated in the front-rear direction D2. The inside of the toner container 41 is a storage space that can store toner. The toner container 41 has a container body 52, a drive transmission portion 55, a cover member 56 and the like. The container body 52 is formed in a cylindrical shape, and has an opening 51 on one side (rear side) through which toner can flow and flow (see Figure 7 ), and close the other side (front side). The rear end of the container main body 52 is formed in a shape with a thin front end, and an opening 51 is provided at the rear end. The opening 51 has a circular cross-section. The inside of the container body 52 is a storage space that can contain toner. Toner is contained in the container body 52. The container body 52 is made of synthetic resin such as polyethylene terephthalate (PET resin), for example.
[0053] The container body 52 is formed with spiral-shaped mountain-shaped ribs 53 (refer to image 3 , Figure 7 ). The mountain-shaped rib 53 protrudes from the inner surface of the container body 52 toward the center of the container body 52. The above-mentioned mountain-shaped rib 53 serves to direct the toner inside to the opening 51 (refer to Figure 7 ) The role of side conveying.
[0054] Such as Figure 4 As shown, a drive transmission portion 55 is attached to the opening 51 side of the container body 52. The drive transmission part 55 is fixed to the container body 52. The drive transmission portion 55 is an annular member in which a gear 54 is formed on the peripheral surface. The drive transmission unit 55 receives rotational driving force from a driving source such as a motor, and transmits the rotational driving force to the toner container 41.
[0055] In the container main body 52, a cover member 56 is provided on the rear side of the drive transmission portion 55. The cover member 56 is used to cover the opening 51. The cover member 56 has an opening 51 (refer to Figure 7 ) A cylindrical receiving frame 58 inserted. Such as Figure 7 As shown, the opening 51 is inserted into the interior of the housing frame 58, thereby covering the opening 51. The housing frame 58 supports the opening 51 so as to be rotatable in the circumferential direction. Therefore, in a state where the opening 51 is inserted into the housing frame 58, the container body 52 can rotate in the circumferential direction. That is, the lid member 56 supports the opening 51 side of the container body 52 so as to be rotatable. The front end 56A of the cover member 56 is movably fitted into the rear end 55A of the drive transmission part 55 from the outside (refer to Figure 7 ). Therefore, in a state where the toner container 41 is mounted on the container mounting portion 42, if a rotational driving force is transmitted to the gear 54, the container body 52 uses the rotational driving force to move toward the arrow D11 (refer to Figure 4 ) Rotate in the direction of rotation shown. That is, the toner container 41 rotates with its longitudinal direction as the center of rotation in a state where toner can be supplied to the developing device 23. As a result, the container main body 52 of the toner container 41 rotates, and while being pushed by the chevron rib 53, the toner is conveyed to the opening 51 side (rear side).
[0056] The cover member 56 has a toner discharge port 74 (refer to Figure 7 ). The toner discharge port 74 is provided on the outer peripheral wall of the cover member 56 for discharging the toner contained in the container body 52 to the outside. in Figure 7 Among them, the toner discharge port 74 is provided on the lower side of the cover member 56. Specifically, the toner discharge port 74 is a rectangular through hole penetrating the wall surface of the cover member 56. Such as Figure 7 As shown, a toner flow passage 75 is formed inside the cover member 56 and between the opening 51 and the toner discharge port 74. If the toner discharge port 74 is directed downward, the toner container 41 is mounted on the container mounting portion 42 (refer to figure 2 ), the toner that has moved from the opening 51 of the container body 52 to the toner circulation passage 75 moves downward in the toner circulation passage 75 and reaches the toner discharge port 74. In addition, when the toner discharge port 74 is opened, the toner is discharged from the toner discharge port 74 to the lower outside. As a result, toner is supplied to the developing device 23. On the other hand, when the toner discharge port 74 is closed, the toner is not discharged, and the toner flow passage 75 is in a state full of toner.
[0057] Such as Figure 7 As shown, a sliding switch part 76 is provided on the cover member 56. The switch part 76 is a plate-shaped member, and is slidably supported by the lid member 56 in the longitudinal direction of the container body 52 (front-rear direction D2). The switch portion 76 opens and closes the toner discharge port 74 corresponding to the position of the toner container 41 relative to the container mounting portion 42. If the toner container 41 is mounted on the container mounting part 42, the switch part 76 opens the toner discharge port 74. Specifically, if the toner container 41 is mounted on the container mounting portion 42, following the mounting operation, the switch portion 76 receives the pressing force from the container mounting portion 42 and moves to a position (open position) where the toner discharge port 74 is opened. ). in Figure 7 The middle shows a state where the switch part 76 moves to the front side to open the toner discharge port 74. When the toner container 41 is taken out from the container mounting part 42, the switch part 76 moves backward from the open position and moves to a position (closed position) where the toner discharge port 74 is closed in accordance with the removal operation, thereby closing Toner discharge port 74. In addition, a pressing member (not shown) is provided on the container mounting portion 42. The pressing member moves the switch portion 76 relatively rearward along with the removal operation of the toner container 41 to move the switch portion 76 from the The movement of the open position to the closed position.
[0058] The cover member 56 is provided with a support frame 59 (an example of the support part of the present invention). The support frame 59 is provided on the cover member 56 on the side opposite to the toner discharge port 74 ( Figure 7 The middle is the upper side) upper. The support frame 59 is formed integrally with the cover member 56. Such as Figure 4 As shown, the supporting frame 59 has a rectangular upper plate 64 and a pair of side plates 65 and 66 (an example of a pair of supporting surfaces of the present invention). The side plates 65 and 66 are spaced apart in the left-right direction D3, and are arranged to face each other to form a pair. The side plates 65 and 66 extend downward from both ends of the upper plate 64 in the left-right direction D3, and their lower ends are connected to the outer peripheral surface of the housing frame 58. The rear end portion 64A of the upper plate 64 is a portion that abuts the first contact portion 106 of the first transmission member 101 (an example of the first working portion of the present invention) described later.
[0059] The support frame 59 has an opening 59A (an example of the restricting portion of the present invention) between the side plate 65 and the side plate 66. The opening 59A is a through hole formed in the upper plate 64. When the upper plate 64 is directed downward and the toner container 41 is inserted into the waste toner recovery device 80 along the mounting direction D21, the opening 59A is an opposite surface facing the lower wall portion 85 of the waste toner recovery device 80 . By inserting in the above-mentioned state, the second transmission member 102 (an example of the third working part of the present invention) described later is engaged with the opening 59A, and the insertion of the toner container 41 is restricted (prohibited).
[0060] The toner container 41 has a first protrusion 61 (an example of the first rod of the present invention) and a second protrusion 62 (an example of the second rod of the present invention). The first protrusion 61 and the second protrusion 62 are provided on the cover member 56, specifically, on the support frame 59 of the cover member 56. The first protrusion 61 is supported on the side plate 65 on the left side and protrudes to the left from the side plate 65. The second protrusion 62 is supported on the right side plate 66 and protrudes to the right from the side plate 66.
[0061] A pair of guide grooves 67 extending in the front-rear direction D2 are respectively formed on the side plates 65 and 66 (refer to Figure 5 ). A pair of guide grooves 67 are respectively provided at positions spaced apart in the vertical direction D1. The first protrusion 61 and the second protrusion 62 are installed to be slidable (movable) along the corresponding guide groove 67. Thereby, the first protrusion 61 can move in the front-rear direction D2 on the side plate 65, and the second protrusion 62 can move in the front-rear direction D2 on the side plate 66.
[0062] Specifically, such as Figure 5 As shown, the first protrusion 61 has a base 70 supported to be slidable along the guide groove 67 and a protrusion 71 protruding from the base 70 toward the horizontal direction. Rails 72 are provided on the upper and lower ends of the base portion 70, respectively. Each rail 72 is supported so as to be able to slide along the guide groove 67. In addition, the guide groove 67 and the rail 72 are provided with a stopper mechanism that temporarily holds the first protrusion 61 at a first position P1 and a second position P2 described later. Therefore, if the first protrusion 61 moves to any one of the first position P1 and the second position P2, it is held at that position by the stopper mechanism.
[0063] The structure of the supporting mechanism of the second protrusion 62 is substantially the same as that of the supporting mechanism of the first protrusion 61, and the second protrusion 62 has a base portion 70 and a protrusion 71. Rails 72 are provided at the upper and lower ends of the base portion 70, respectively. Each rail 72 is supported so as to be able to slide along the guide groove 67. In addition, the guide groove 67 and the rail 72 are provided with a stopper mechanism that temporarily holds the second protrusion 62 at a third position P3 and a fourth position P4 described later. Therefore, if the second protrusion 62 moves to any one of the third position P3 and the fourth position P4, it is held at that position by the stopper mechanism.
[0064] The first protrusion 61 can be positioned at a predetermined first position P1 (refer to Figure 6A ) And the second position P2 (reference Figure 6A ). In other words, the first protrusion 61 can be switched to the first position P1 and the second position P2. The second protrusion 62 can be at a predetermined third position P3 (refer to Figure 6A ) And the fourth position P4 (reference Figure 6A ). In other words, the second protrusion 62 can be switched to the third position P3 and the fourth position P4. The first position P1 is a position (initial position) where the unused toner container 41 and the first protrusion 61 are arranged in advance with respect to the container body 52 filled with unused toner. In addition, the third position P3 is a position (initial position) where the second protrusion 62 is arranged in advance with respect to the unused toner container 41. That is, the first protrusion 61 of the unused toner container 41 purchased by the user is arranged at the first position P1, and the second protrusion 62 is arranged at the third position P3. The second position P2 is a position separated from the first position P1 toward the front side. In other words, the second position P2 is a position separated by a predetermined interval from the first position P1 toward the toner container 41 with respect to the withdrawal direction (the withdrawal direction) D22 of the toner replenishing device 40. The fourth position P4 is a position separated from the third position P3 toward the front side. In other words, the fourth position P4 is a position separated from the third position P3 toward the extraction direction D22 by a predetermined interval. In this embodiment, the first position P1 and the third position P3 are located at substantially the same position along the front-rear direction D2. In addition, the second position P2 and the fourth position P4 are located at substantially the same position along the front-rear direction D2.
[0065] Such as figure 2 As shown, the container mounting portion 42 has four receiving portions 44. A toner container 41 of a predetermined color is stored in each storage portion 44. The rightmost storage portion 44A (an example of the first storage portion of the present invention) contains the toner container 41 corresponding to black. figure 2 The state in which a part of the toner container 41 on the rear side corresponding to black is inserted into the accommodating portion 44 is shown.
[0066] As a conventional image forming apparatus, it is known that an empty toner container 41 (hereinafter referred to as an "empty container") after use can also be used as a waste toner container. However, since a part of the empty container 41 is deformed or cut off in the conventional structure, after the empty container 41 is used as a waste toner container, it cannot be used for other purposes. In addition, there is a possibility that fragments of a part of the empty container 41 that are bent remain in the waste toner recovery device 80 and prevent the waste toner container from being drawn out or installed. Therefore, in the image forming apparatus 10 of the present embodiment, the toner replenishing device 40 is provided with the first transmission member 101 (an example of the first working part of the present invention), and the waste toner recovery device 80 A second transmission member 102 (an example of the third working part of the present invention) is provided. As a result, the waste toner container can be smoothly inserted and removed from the waste toner recovery device 80, and the toner container 41 for replenishment and the toner container 41 for waste toner recovery have the same structure. The combined use prevents the toner container 41 from which the waste toner has been recovered from being mounted on the toner replenishing device 40, thereby preventing reuse of the waste toner.
[0067] A first transmission member 101 is provided on the receiving portion 44A. When the toner container 41 is inserted into the accommodating portion 44A, the first transmission member 101 corresponds to the position of the first protrusion 61, allowing or restricting the mounting of the toner container 41 with respect to the accommodating portion 44A.
[0068] Such as Figure 8 As shown, the first transmission member 101 is mounted on the upper wall portion 45 (an example of the upper side wall of the present invention) of the receiving portion 44A. In a state where the first protrusion 61 is located at the first position P1, the first transmission member 101 allows the toner container 41 to be mounted with respect to the receiving portion 44A. In addition, the first transmission member 101 acts on the toner container 41 in a state where the first protrusion 61 is located at the second position P2, and restricts (prohibits) mounting of the toner container 41 with respect to the receiving portion 44A (see Figure 10B ). Specifically, the first transmission member 101 includes: a first movable portion 105, a first contact portion 106, and a second contact portion 107 (refer to Figure 9A ) And the first pressing member 108.
[0069] Such as Figure 9A~9C As shown, the first movable portion 105 has a rotating shaft 110 and a base portion 111, and the base portion 111 protrudes from the rotating shaft 110 toward an extension direction D31 perpendicular thereto. The base portion 111 is a substantially rectangular plate member, on one surface ( Figure 9A A plurality of ribs 112 extending in the extending direction D31 are formed on the middle (upper side). The rotating shaft 110 is rotatably supported on the upper wall portion 45. Specifically, a pair of bearing portions 114 separated in the left-right direction D3 are provided on the upper wall portion 45, and the rotating shaft 110 is rotatably supported on the bearing portion 114.
[0070] An opening 116 communicating with the inside of the housing portion 44A is formed on the upper wall portion 45 and on the front side of the bearing portion 114. Such as Figure 8 As shown, in a state where the rotating shaft 110 is supported by the bearing portion 114, the base portion 111 of the first movable portion 105 is inserted into the opening 116. A pair of stoppers 118 are provided on the protruding end of the base portion 111, and the pair of stoppers 118 extend in the same direction as the axial direction of the rotating shaft 110. Therefore, in the upper wall portion 45, when the first movable portion 105 passes through the opening 116, the stopper 118 hooks on the circumferential edge of the opening 116, and is maintained in the entering posture of partially entering the opening 116 and entering the interior of the receiving portion 44A ( Figure 8 Posture shown). In addition, if it is pressed upward from the inside of the accommodating portion 44A in the entering posture, the first movable portion 105 is displaced to the retreat posture of retreating upward from the opening 116. That is, the first movable portion 105 of the first transmission member 101 can advance and retreat from the upper wall portion 45 of the housing portion 44A with respect to the inside of the housing portion 44A.
[0071] The first pressing member 108 applies a force to the first movable portion 105 from the upper wall portion 45 toward the inner side of the housing portion 44A. The first pressing member 108 is installed on the upper wall portion 45. Such as Figure 8 As shown, the first pressing member 108 is formed into a rectangular shape by bending a wire-like steel material. The first pressing member 108 is rotatably mounted on the upper wall portion 45 with its both ends as support shafts 108A. Specifically, on the upper wall portion 45 toward the front side of the bearing portion 114, a pair of attachment portions 119 are provided on the peripheral edge portion of the opening 116. The support shaft 108A is inserted and supported in the shaft hole of the mounting portion 119. The first pressing member 108 has arm portions 108B extending from the support shaft 108A, and linear connecting portions 108C connecting the arm portions 108B. The arm portion 108B and the connecting portion 108C form a rectangular portion.
[0072] On the circumferential edge of the opening 116 and between the bearing portion 114 and the mounting portion 119, a pair of locking pieces 120 that hook the arm portion 108B of the first pressing member 108 is provided. The locking piece 120 protrudes outward from the peripheral edge of the opening 116, and the lower surface of the locking piece 120 is hooked by the first pressing member 108. When the support shaft 108A is supported on the mounting portion 119 and the arm portion 108B is hooked by the locking piece 120, the connecting portion 108C of the first pressing member 108 applies elasticity downward to the rib 112 of the first movable portion 105 Force. That is, the first pressing member 108 applies a force to the first movable portion 105 toward the entry posture side. If the upper pressing force is received from the inside of the housing portion 44A during the entering posture, the first movable portion 105 is displaced from the entering posture to the retracting posture against the force generated by the first pressing member 108 .
[0073] In addition, the first pressing member 108 is not limited to a wire-shaped member as long as it can apply an elastic force from the upper wall portion 45 to the first movable portion 105 toward the inner side of the housing portion 44A. A torsion spring or a plate can also be used. Springs or elastic members of various shapes or materials such as springs.
[0074] Such as Figure 9B As shown, the first abutting portion 106 is provided on the first movable portion 105. The first abutting portion 106 is provided on the front end of the base portion 111 in the extension direction D31. When the first movable portion 105 is in the entering posture, the first abutting portion 106 can abut the rear end 64A of the upper plate 64 of the support frame 59 of the toner container 41. A locking piece 106A is formed on the first contact portion 106, and the locking piece 106A protrudes from the back surface of the first movable portion 105 in the extending direction D31. When the first abutting portion 106 abuts the rear end 64A, the locking piece 106A enters the back surface of the upper plate 64. Thereby, the locking piece 106A hooks the rear end 64A of the upper plate 64, and prevents the first movable portion 105 from being displaced upward (the side of the retracted posture).
[0075] The second abutting portion 107 is provided on the first movable portion 105. The second abutting portion 107 is provided on the rib 112A, which is located at the leftmost side of the four ribs 112 provided on the base portion 111. Specifically, the second abutting portion 107 is provided on the front end of the protrusion direction D31 on the rib 112A, and protrudes from the first abutting portion 106 toward the protrusion direction D31. The second contact portion 107 is an inclined portion, and has an inclined surface inclined from the back surface of the first movable portion 105 toward the protruding end. When the first movable portion 105 is in the entering posture, the second abutting portion 107 can abut the first protrusion 61 of the support frame 59 of the toner container 41.
[0076] In this embodiment, since the first transmission member 101 configured as described above is provided in the housing portion 44A, when the toner container 41 is inserted into the housing portion 44A, the first contact portion 106 or the second contact portion 107 Either one abuts on the rear end 64A or the first protrusion 61. Specifically, such as Figure 10A As shown, if the toner container 41 is inserted into the accommodating portion 44A in a state where the first protrusion 61 is located at the first position P1, the second abutting portion 107 is earlier than the first abutting portion 106. It is in contact with the first protrusion 61. In this case, the first contact portion 106 does not contact the rear end 64A. At this time, the second contact portion 107 receives an upward pressing force from the first protrusion 61, and the first transmission member 101 is displaced upward to become the retracted posture. Thereby, the toner container 41 is not hindered by the first abutting portion 106 and is allowed to be inserted into the accommodating portion 44A, and can be inserted into a predetermined mounting position in the accommodating portion 44A.
[0077] In addition, such as Figure 10B As shown, if the toner container 41 is inserted into the accommodating portion 44A in a state where the first protrusion 61 is located at the second position P2, the first abutting portion 106 is earlier than the second abutting portion 107 It is in contact with the rear end 64A. In this case, the second abutting portion 107 does not abut the first protrusion 61. At this time, as the first abutting portion 106 abuts against the rear end 64A, the first transmission member 101 maintains the entering posture. As a result, the toner container 41 is restricted (prohibited) from being inserted further into the accommodating portion 44A by the abutment with the first abutting portion 106, and cannot be inserted into the mounting position of the accommodating portion 44A. In addition, when the first abutting portion 106 abuts the rear end 64A, the locking piece 106A enters the back side of the plate 64 and hooks the rear end 64A. Therefore, when the toner container 41 is inserted, even if a force is applied to push the first movable portion 105 upward due to the impact of the first abutting portion 106 and the rear end 64A, the locking piece 106A can be used to make The first movable portion 105 maintains the entering posture.
[0078] Such as Figure 11A~11C As shown, a first pressing portion 121 (an example of the second working portion of the present invention) is provided on the receiving portion 44A. The first pressing portion 121 is integrally formed with the inner wall of the receiving portion 44A. In the process of mounting the toner container 41 into the accommodating portion 44A, the first pressing portion 121 acts on the second protrusion 62 to press the second protrusion 62 forward (see Figure 11A , 11B ). Thereby, the second protrusion 62 moves from the third position P3 to the fourth position P4 (refer to Figure 11C ). That is, the second protrusion 62 is switched from the third position P3 to the fourth position P4. In this embodiment, when the toner container 41 installed in the receiving portion 44A becomes empty, the empty toner container 41 (hereinafter referred to as "empty container 41") can be used in the waste toner recovery device 80. On the other hand, in order to prevent the new unused toner container 41 from being erroneously installed in the waste toner recovery device 80, it can be installed in the waste toner recovery device 80 when the toner container 41 becomes empty. The above structure will be described in detail later. In the state where the second protrusion 62 is located at the third position P3, the toner container 41 cannot be attached to the waste toner recovery device 80. In the state at the fourth position P4, the toner container 41 can be installed in the waste toner recovery device 80.
[0079] [Waste Toner Recovery Device]
[0080] Below, refer to Figure 12 to Figure 16C , The waste toner recovery device 80 will be described. Such as Picture 12 As shown, the waste toner recovery device 80 is composed of a waste toner container 81 and a container mounting portion 82 where the waste toner container 81 is mounted. here, Picture 12 The state where the waste toner container 81 is installed in the waste toner recovery device 80 is shown. In addition, in each figure, the installation position of the waste toner recovery device 80 in the box 11 is taken as a reference, and the vertical direction is taken as the vertical direction D1. The detachment direction (the insertion/removal direction) is referred to as the front-rear direction D2, and the horizontal direction viewed from the front of the waste toner recovery device 80 is referred to as the left-right direction D3.
[0081] The waste toner container 81 has the same shape as the toner container 41 that can be installed in the toner replenishing device 40. In the present embodiment, the waste toner container 81 is a used empty toner container (empty container) 41 after all the toners in the toner replenishing device 40 have been used up. Specifically, the toner container 41 mounted in the accommodating portion 44A, that is, the empty container 41 whose toner is consumed and empty, is taken out from the accommodating portion 44A. As described above, the new toner container 41 is in a state where the first protrusion 61 is arranged at the first position P1 and the second protrusion 62 is arranged at the third position P3 (the first state of the present invention). An example of). Also, if a new toner container 41 is inserted into the accommodating portion 44, the first protrusion 61 is held at the first position P1, and the second protrusion 62 moves from the third position P3 to the fourth position P4. That is, the second protrusion 62 is switched from the third position P3 to the fourth position P4. Therefore, the empty container 41 taken out from the accommodating portion 44A is in a state in which the first protrusion 61 is disposed at the first position P1 and the second protrusion 62 is disposed at the fourth position P4 (the first protrusion of the present invention). An example of two states). The toner container 41 in the above state can be installed in the toner replenishing device 40 and the waste toner recovery device 80, respectively. Hereinafter, since the waste toner container 81 has the same structure as the toner container 41, the description of the structure is omitted by using the same reference numerals.
[0082] The waste toner container 81 is mounted in the container mounting portion 82 with the toner discharge port 74 facing upward. In a state where the waste toner container 81 is mounted at a predetermined mounting position of the container mounting portion 82, the rotational driving force of a driving source such as a motor is transmitted to the gear 54. At this time, the rotation driving force in the second rotation direction (see arrow D12) is transmitted to the gear 54, and the second rotation direction is opposite to the first rotation direction of the toner container 41 (see arrow D11). If this rotational driving force is transmitted, the waste toner container 81 rotates in the second rotational direction indicated by the arrow D12. That is, the waste toner container 81 is mounted in the container mounting portion 82 and is capable of allowing the waste toner to flow into the toner discharge port 74, and faces the second rotation direction opposite to the first rotation direction. Direction (refer to arrow D12). Thereby, the waste toner contained in the waste toner container 81 is pushed by the protruding rib 73 and conveyed in a direction away from the opening 51 (front side).
[0083] The container attachment portion 82 is configured to be able to attach and detach the waste toner container 81. With the waste toner container 81 installed in the container mounting portion 82, the container mounting portion 82 can transfer the waste toner discharged from the belt cleaning device 6 to the waste toner container 81 from the toner discharge port 74 Internal guidance. The waste toner container 81 can be taken out from the container mounting portion 82 and can be mounted in the container mounting portion 82 as needed. Specifically, if the waste toner container 81 is filled with waste toner or reaches a predetermined amount (full amount) or more determined in advance, the user takes out the waste toner container 81. Also, the user installs an empty waste toner container 81.
[0084] Such as Picture 12 As shown, the container mounting portion 82 has a receiving portion 84 (an example of the second receiving portion of the present invention). The empty container 41 installed in the storage portion 44A of the toner replenishing device 40 is stored in the storage portion 84 as a waste toner container 81.
[0085] A second transmission member 102 is provided in the receiving portion 84. When the waste toner container 81 is inserted into the accommodating portion 84, the position of the second transmission member 102 corresponds to the second protrusion 62, allowing or restricting the installation of the waste toner container 81 with respect to the accommodating portion 84.
[0086] Such as Picture 12 As shown, the second transmission member 102 is mounted on the lower wall portion 85 (an example of the lower side wall of the present invention) of the receiving portion 84. In a state where the second protrusion 62 is located at the fourth position P4, the second transmission member 102 allows the waste toner container 81 to be mounted with respect to the receiving portion 84. In addition, in a state where the second protrusion 62 is located at the third position P3, the second transmission member 102 restricts (prohibits) mounting of the waste toner container 81 with respect to the receiving portion 84. In other words, during the process of installing the waste toner container 81 into the accommodating portion 84, the second transmission member 102 acts on the second protrusion 62 arranged at the third position P3 to restrict (prohibit) relative to the accommodating portion. 84 Install a waste toner container 81. Specifically, the second transmission member 102 includes a second movable portion 125, a first protruding piece 126, a second protruding piece 127 and a second pressing member 128.
[0087] Such as Figure 13 with Figure 14A~14C As shown, the second movable part 125 has a rotating shaft 130. The rotating shaft 130 is rotatably supported on the lower wall portion 85. Specifically, a pair of bearing portions 134 separated in the left-right direction D3 are provided on the lower wall portion 85, and the rotating shaft 130 is rotatably supported on the bearing portion 134. As a result, the second movable portion 125 is supported by the lower wall portion 85 so as to be rotatable about the rotation shaft 130.
[0088] Two openings 136 and 137 are formed in the lower wall portion 85. The opening 136 is formed on the rear side of the bearing portion 134 and communicates with the inside of the receiving portion 84. The opening 137 is formed on the front side of the bearing portion 134 and communicates with the inside of the housing portion 84.
[0089] A first protruding piece 126, a second protruding piece 127, and a second pressing member 128 are provided on the second movable portion 125. The first protruding piece 126 protrudes from the rotation shaft 130 toward the outer side in the radial direction. The second projecting piece 127 protrudes from the rotating shaft 130 in a direction different from the projecting direction of the first projecting piece 126 on the outer side of the rotating shaft 130 in the radial direction. The angle formed by the first protruding piece 126 and the second protruding piece 127 is approximately 120°.
[0090] In a state where the rotating shaft 130 is supported by the bearing portion 134, the first protruding piece 126 can be inserted into the housing portion 84 from the lower wall portion 85 through the opening 136. Therefore, if the second movable portion 125 rotates around the rotation shaft 130, the first protruding piece 126 can be displaced to an entry posture that enters the interior of the housing portion 84 from the opening 136 or a retracted posture that retreats from the interior of the housing portion 84. That is, the second movable portion 125 of the second transmission member 102 can advance and retreat from the lower wall portion 85 of the housing portion 84 with respect to the inside of the housing portion 84.
[0091] In addition, when the first protruding piece 126 enters the accommodating portion 84 from the opening 136 and enters the state (entering posture), the second protruding piece 127 enters the state of retracting outward from the opening 137 of the lower wall portion 85 (retracting posture) ). In addition, when the first protruding piece 126 retreats from the opening 136 to the outside, the second protruding piece 127 enters the inside of the accommodating portion 84 and enters the inside to be able to engage with the opening 59A of the support frame 59.
[0092] The second pressing member 128 applies a force to the first protruding piece 126 from the lower wall portion 85 through the opening 136 toward the inner side of the receiving portion 84. The second pressing member 128 is a torsion spring installed on the end 130A of the rotating shaft 130. A mounting portion 139 is provided in the vicinity of the end 130A. The mounting portion 139 is used to mount one end of the second pressing member 128. The other end of the second pressing member 128 abuts against the second movable portion 125 and contacts the The two movable parts 125 together exert a force on the first protruding piece 126. That is, the second pressing member 128 applies a force to the first protruding piece 126 toward the entering posture side. When the first protruding piece 126 receives a downward pressing force from the inside of the accommodating portion 84 in the entering posture, the second transmission member 102 rotates, and the first protruding piece 126 retracts outward from the opening 136. In addition, as the first projecting piece 126 is retracted, the second projecting piece 127 enters the interior of the housing portion 84 from the opening 137.
[0093] In addition, the second pressing member 128 is not limited to a torsion spring as long as it can apply an elastic force to the first protruding piece 126 of the second movable portion 125 from the lower wall portion 85 toward the inside of the housing portion 84. Use springs or elastic members of various shapes or materials such as leaf springs.
[0094] In this embodiment, since the second transmission member 102 configured as described above is provided on the receiving portion 84, when the waste toner container 81 is inserted into the receiving portion 84, the second protrusion 62 of the support frame 59 and the first The protruding piece 126 abuts. As a result, the second transmission member 102 rotates, and the first protruding piece 126 retracts from the opening 136 to the outside. When the waste toner container 81 is inserted into the accommodating portion 84, if the first protrusion piece 126 abuts the second protrusion 62 after the opening 59A passes through the second protrusion piece 127, the second transmission member 102 allows the waste toner The container 81 is inserted into the receiving portion 84. On the other hand, if the first protrusion piece 126 abuts against the second protrusion 62 before the opening 59A passes through the second protrusion piece 127, the second protrusion piece 127 engages with the opening 59A, restricting (prohibiting) waste toner The container 81 is inserted into the receiving portion 84.
[0095] Specifically, such as Figure 15A As shown, if the waste toner container 81 in the state where the second protrusion 62 is located at the fourth position P4 is inserted into the receiving portion 84, the second protrusion 62 abuts the first protrusion piece 126. At this time, the second transmission member 102 rotates due to the contact with the second protrusion 62. In addition, the first protruding piece 126 protrudes from the opening 136 toward the outside of the lower wall portion 85, and the second protruding piece 127 enters the inside of the housing portion 84. At this time, since the second protruding piece 127 is arranged at a position on the side of the drawing direction D22 compared to the opening 59A, the second protruding piece 127 is not engaged with the opening 59A. Therefore, the waste toner container 81 is allowed to be inserted into the accommodating portion 84 without being restricted (prohibited) by the second protruding piece 127, and can be inserted into a fixed installation position in the accommodating portion 84.
[0096] In addition, in order to prevent the new unused toner container 41 from being mistakenly installed in the waste toner recovery device 80, the second transmission member 102 acts on the waste toner container 81 in the process of installing the waste toner container 81 into the receiving portion 84. The second protrusion 62 arranged at the third position P3 restricts (prohibits) the installation of the waste toner container 81. Specifically, such as Figure 15B As shown, if the toner container 41 in the state where the second protrusion 62 is at the third position P3 is inserted into the accommodating portion 84, the second transmission member 102 rotates due to abutment with the second protrusion 62. In addition, the first protruding piece 126 protrudes from the opening 136 to the outside of the lower wall portion 85, and the second protruding piece 127 enters the inside of the housing portion 84. At this time, the second protruding piece 127 enters the opening 59A and engages. Therefore, the insertion of the toner container 41 into the housing portion 84 is restricted (prohibited) by the second projecting piece 127. As a result, it is possible to prevent the new unused toner container 41 from being erroneously installed in the waste toner recovery device 80.
[0097] Such as Figure 16A~16C As shown, a second pressing portion 142 (an example of the fourth working portion of the present invention) is provided in the receiving portion 84. The second pressing portion 142 is a protruding member formed integrally with the inner wall of the housing portion 84. During the process of mounting the waste toner container 81 to the accommodating portion 84, the second pressing portion 142 acts on the first protrusion 61 arranged at the first position P1 to switch the first protrusion 61 to the second Two position P2 (reference Figure 16C ). Specifically, the second pressing portion 142 corresponds to the waste toner container 81 being installed in the accommodating portion 84, and presses the first protrusion 61 forward (see Figure 16A , 16B ). Thereby, the first protrusion 61 moves from the first position P1 to the second position P2 (refer to Figure 16C ). That is, the first protrusion 61 is switched from the first position P1 to the second position P2. In this embodiment, an empty container 41 in a state where the toner is completely consumed in the toner replenishing device 40 is used as the waste toner container 81. If the above-mentioned waste toner container 81 is filled with waste toner, it is taken out from the waste toner recovery device 80. In order to prevent the waste toner in the removed waste toner container 81 from being used in the toner replenishing device 40, the waste toner container 81 cannot be installed in the toner replenishing device 40 again. That is, the waste toner container 81 taken out from the waste toner recovery device 80 becomes the state where the first protrusion 61 moves from the first position P1 to the second position P2 by the second pressing portion 142 (this An example of the third state of the invention). Therefore, as described above, the first transmission member 101 is used to restrict (prohibit) the insertion of the waste toner container 81 with the first protrusion 61 at the second position P2 into the accommodating portion 44A (refer to Figure 11A~11C ). That is, when the first protrusion 61 is arranged at the second position P2, the removed waste toner container 81 cannot be installed in the accommodating portion 44A. Therefore, it is possible to prevent the waste toner from being used due to remounting of the waste toner container 81.
[0098] Claims (amended in accordance with Article 19 of the Treaty)
[0099] 1. An image forming apparatus, characterized by comprising:
[0100] Toner supply department;
[0101] Waste toner recycling department; and
[0102] The toner container can be attached to and detached from the toner supply part and the waste toner recovery part, respectively,
[0103] The toner container has: a first lever capable of switching between a first position and a second position; and a second lever capable of switching between a third position and a fourth position,
[0104] The toner replenishing part has: a first working part that acts on the first lever disposed at the second position during the process of mounting the toner container to the toner replenishing part The toner container prohibits mounting of the toner container; and a second working part that acts on the second lever arranged at the third position to switch the second lever to the first Four positions,
[0105] The waste toner recovery part has a third working part, which acts on the second operation part disposed at the third position during the process of mounting the toner container to the waste toner recovery part. Two levers, prohibiting the installation of the toner container; and a fourth working part, acting on the first lever arranged in the first position to switch the first lever to the second position.
[0106] 2. The image forming apparatus according to claim 1, wherein:
[0107] The toner container in the first state in which the first lever is arranged at the first position and the second lever is arranged at the third position is attached to the toner supply unit In the process, the second lever is used to switch the second lever to be arranged in the fourth position by the action of the second working part, and the toner container becomes capable of being attached to the toner replenishing part and The second state of the waste toner recovery section,
[0108] In the process of mounting the toner container in the second state to the waste toner recovery part, the first lever is switched by the function of the fourth working part to be arranged in the In the second position, the toner container is in a third state where it cannot be attached to the toner replenishing portion.
[0109] 3. The image forming apparatus according to claim 1, wherein:
[0110] The second working part corresponds to the toner container mounted on the toner supply part, and presses the second lever to move the second lever from the third position to the fourth position ,
[0111] The fourth working part corresponds to the toner container mounted on the waste toner recovery part, and presses the first lever to move the first lever from the first position to the second position. position,
[0112] The first working part acts on the first lever when the first lever is in the first position, allowing the toner container to be mounted relative to the toner replenishing part, and The first lever acts on the toner container with the first lever at the second position, prohibiting mounting of the toner container with respect to the toner supply part,
[0113] The third working part allows the toner container to be installed with respect to the waste toner recovery part in a state where the second lever is located at the fourth position, and the second lever is located at the first In the three-position state, it is prohibited to install the toner container with respect to the waste toner recovery part.
[0114] 4. The image forming apparatus according to claim 3, wherein:
[0115] The toner container includes a supporting portion having a pair of supporting surfaces along a vertical direction perpendicular to the mounting direction of the toner supply portion and the waste toner recovery portion, respectively Separately, the first rod is supported on one of the supporting surfaces, and the second rod is supported on the other supporting surface,
[0116] The toner replenishing part includes a first accommodating part that accommodates the toner container inserted in the mounting direction,
[0117] The first working part includes:
[0118] The first movable portion can advance and retreat from the upper side wall of the first receiving portion with respect to the inside of the first receiving portion;
[0119] The first abutting portion is provided on the first movable portion and can abut against the front end portion of the support portion on the mounting direction side;
[0120] A second abutting portion protruding from the first abutting portion toward the direction in which the toner container is drawn out with respect to the toner replenishing portion and capable of abutting against the first lever; and
[0121] The first pressing member applies a force to the first movable portion from the upper side wall toward the inner side,
[0122] When the toner container is inserted into the first accommodating portion, if the second abutting portion abuts the first rod before the first abutting portion, the first working portion allows The toner container is inserted into the first accommodating portion, and if the first abutting portion abuts the front end portion before the second abutting portion, the first working portion prohibits the toner The container is inserted into the first receiving part.
[0123] 5. The image forming apparatus according to claim 4, wherein:
[0124] When the toner container with the first lever in the first position is inserted into the first accommodating portion, the second abutting portion abuts against the first lever to cause the The first movable portion is retracted from the upper side wall to the outside, allowing insertion of the toner container,
[0125] When the toner container with the first lever in the second position is inserted into the first accommodating portion, the first abutting portion abuts against the front end portion, and the insertion of the adjustment is prohibited Toner container.
[0126] 6. The image forming apparatus according to claim 4, wherein the first movable portion is rotatably supported on the upper side wall with the vertical direction as a rotation axis.
[0127] 7. The image forming apparatus according to claim 3, wherein:
[0128] The toner container includes a supporting portion having a pair of supporting surfaces along a vertical direction perpendicular to the mounting direction of the toner supply portion and the waste toner recovery portion, respectively Separately, the first rod is supported on one of the supporting surfaces, and the second rod is supported on the other supporting surface,
[0129] The waste toner recovery part includes a second accommodating part accommodating the toner container inserted along the mounting direction,
[0130] The supporting portion has a restricting portion, and the restricting portion is disposed opposite to the lower side wall of the second receiving portion between the pair of supporting surfaces, and
[0131] The third working department includes:
[0132] A second movable portion having a first protruding piece, the first protruding piece being able to advance and retreat from the lower side wall of the second receiving portion with respect to the inside of the second receiving portion;
[0133] The second protruding piece is provided on the second movable portion, and when the first protruding piece enters the inside of the second receiving portion, it protrudes outward from the lower side wall. When the first protrusion When the piece protrudes from the lower side wall to the outside, it enters the inside of the second receiving portion and can be engaged with the restricting portion; and
[0134] The second pressing member applies a force to the first protruding piece from the lower side wall toward the inner side,
[0135] When the toner container is inserted into the second accommodating portion, if the restricting portion passes through the second protruding piece, the first protruding piece abuts the second rod, the third The working part allows the toner container to be inserted into the second accommodating part. If the first protruding piece abuts the second rod before the restricting part passes the second protruding piece, the first The two protruding pieces are engaged with the restricting portion, and the third working portion prohibits the toner container from being inserted into the second receiving portion.
[0136] 8. The image forming apparatus according to claim 7, wherein:
[0137] When the toner container with the second lever in the fourth position is inserted into the second accommodating portion, the second movable portion contacts the second lever to cause the The first protruding piece protrudes outward from the lower side wall, and the second protruding piece enters the inside of the second accommodating portion, and is arranged opposite to the toner container by comparing with the restricting portion The toner container is allowed to be inserted at a position on the side of the withdrawal direction of the toner supply part,
[0138] When the toner container with the second lever in the third position is inserted into the second accommodating portion, the second movable portion contacts the second lever to cause the The first protruding piece protrudes from the lower side wall to the outside, and the second protruding piece enters the inside of the second receiving portion, and is engaged with the restricting portion along the installation direction to prohibit insertion 述toner container.
[0139] 9. The image forming apparatus according to claim 8, wherein:
[0140] The supporting portion has an opposing surface opposite to the lower side wall of the second receiving portion,
[0141] The restricting portion is formed on the facing surface and is a through opening into which the second protruding piece can be inserted.
[0142] 10. The image forming apparatus according to claim 7, wherein the second movable portion is rotatably supported on the lower side wall with the vertical direction as a rotation axis.

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