JP2016114842A - Powder recovery device and image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder recovery device including a storage box that has an opening in a canopy and recovers a powder dropping through the opening, the powder recovery device capable of accumulating the recovered powder more uniformly.SOLUTION: A waste toner receiving plate 3064 receives a powder dropping through an opening 3062 and drops the powder onto a bottom surface 3065 provided below. If a powder remains on the waste toner receiving plate 3064, powder moving members 3067a and 3067b are brought into contact with the waste toner receiving plate 3064 while being rotated by the rotation of rotary poles 3066a and 3066b to drop the remaining powder onto the bottom surface 3065 and move the dropped powder to another position. At this time, a powder removing member 3068 drops a powder adhered to the powder moving members 3067a and 3067b onto the bottom surface 3065.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a powder recovery apparatus including an opening in a canopy and including a storage box for recovering powder falling through the opening, and an image forming apparatus including the powder recovery apparatus.

  2. Description of the Related Art Conventionally, image forming apparatuses that form an electrostatic latent image by an electrophotographic process and perform development by supplying toner to the latent image have been widely used.

  In such an image forming apparatus, so-called waste toner, unlike unused toner in the toner cartridge, has an external additive on the toner surface that has fallen off or is buried, has almost no charging property, and has fluidity. Remarkably reduced. In addition, waste toner contains paper dust (paper dust), and this paper dust behaves like an adhesive that attaches waste toner to each other, further reducing fluidity and agglomerating. It becomes easy to do. Accordingly, generally, the waste toner is stored in a waste toner container separately provided from the unused toner container.

  On the other hand, in Patent Document 1, a stirring member is provided at the lower portion of the toner intake port so that toner does not accumulate due to rotation, and the stirring member is brought into contact with the film member to remove the adhering toner. Disclosed is a waste toner collecting device that is kept away from the mouth.

JP 2007-334175 A

  However, when the waste toner is collected, dropped into the waste toner container, and deposited on the bottom of the waste toner container, the waste toner has low fluidity and tends to aggregate as described above. There arises a problem that the container cannot be uniformly accommodated. However, in the waste toner collecting apparatus according to Patent Document 1, such a stirring member cannot stir the waste toner at the bottom of the waste toner container, and such a problem cannot be solved.

  The present invention has been made in view of such circumstances, and its object is to provide a powder recovery apparatus including an opening in the canopy and a storage box for recovering powder falling through the opening. A powder receiving plate which is provided obliquely with respect to the bottom surface of the storage box and receives the powder falling from the opening and drops to the bottom surface below, and the powder on the powder receiving plate is dropped by hitting the powder receiving plate. A powder moving member that moves the powder moving member from the lower bottom surface to another position, a rotating column that is provided in parallel with the bottom surface, rotates the powder moving member while holding the powder moving member in a radial direction, and is provided above the rotating column. An object of the present invention is to provide a powder recovery apparatus and an image forming apparatus that include a powder removal member that drops powder adhering to the powder moving member, and that can collect the recovered powder more uniformly.

  The powder recovery apparatus according to the present invention has an opening in the canopy, and in the powder recovery apparatus including a storage box for recovering powder falling through the opening, the powder recovery apparatus is provided obliquely with respect to the bottom surface of the storage box, A powder receiving plate that receives the powder falling from the opening and drops it to the bottom surface below, and a powder moving member that contacts the powder receiving plate to drop the powder on the powder receiving plate and moves the dropped powder from the bottom surface to another position A rotating column that is provided in parallel with the bottom surface and rotates the powder moving member while holding the powder moving member in a radial direction, and a dust removing member that is provided above the rotating column and drops the powder adhering to the powder moving member It is characterized by providing.

  The powder recovery apparatus according to the present invention is characterized in that the powder receiving plate has elasticity.

  The powder recovery apparatus according to the present invention is characterized in that the powder removal member is provided so as to protrude from the canopy toward the rotation shaft, and a tip of the powder removal member has a plate shape parallel to the rotation column. .

  The powder recovery apparatus according to the present invention is characterized in that the powder removal member has elasticity.

  The powder recovery apparatus according to the present invention is characterized in that the powder removal member has an angle between a contact surface with the powder moving member and the canopy of 90 degrees or more and 170 degrees or less.

  In the powder recovery apparatus according to the present invention, the powder receiving plate has a comb-teeth shape at an end contacting the powder moving member.

  The powder recovery apparatus according to the present invention is characterized in that the powder moving member has a hollow plate shape, and an end portion of the powder removing member has a shape corresponding to the hollow portion. And

  In the powder recovery apparatus according to the present invention, the powder removal member is configured such that the distance from the base on the canopy side to the tip is longer than the distance from the base to the rotating column, and the tip side elastically contacts the rotating column. It is characterized by.

  In the powder recovery apparatus according to the present invention, the powder removal member is configured such that the base is disposed immediately above the rotating column or on the opposite side of the powder receiving plate with respect to the rotating column. It is characterized by that.

  In the powder recovery apparatus according to the present invention, the rotating column and the powder moving member are formed in a crank shape, and a plurality of the powder moving members are arranged in parallel, and each powder moving member is configured to rotate at the same period. Both ends are held between members, and a rotating member that rotates by the powder moving member to move the powder is provided.

  An image forming apparatus according to the present invention includes the powder recovery device according to any one of the above-described inventions, and a toner cartridge that stores unused toner, and a sheet using toner supplied from the toner cartridge. Further, the image forming apparatus is configured such that waste toner is accommodated in the powder collecting apparatus.

  According to the present invention, when the powder is recovered and stored, the recovered powder can be more uniformly stored.

It is a block diagram which shows the principal part structure of the multifunctional device which concerns on Embodiment 1 of this invention. FIG. 3 is a partial configuration diagram that partially shows the periphery of a toner cartridge in the multifunction peripheral according to the first embodiment of the present invention. FIG. 3 is a schematic diagram schematically illustrating a toner cartridge in the multifunction machine according to the first embodiment of the present invention. 3 is a plan view of a waste toner box in the multifunction machine according to Embodiment 1 of the present invention. FIG. FIG. 3 is a plan view of a waste toner box when the canopy is removed in the multifunction machine according to Embodiment 1 of the present invention. FIG. 3 is a main part configuration diagram illustrating a main part configuration of a waste toner box in the multifunction peripheral according to the first embodiment of the present invention. FIG. 5 is an explanatory diagram for explaining a connection state between a powder moving member and a waste toner receiving plate in the multifunction machine according to Embodiment 1 of the present invention. FIG. 5 is a partial enlarged view for explaining the functions of a powder moving member, a waste toner receiving plate, and a powder removing member in a waste toner box in the multifunction machine according to Embodiment 1 of the present invention. FIG. 10 is a partial configuration diagram illustrating a main configuration of a waste toner box in a multifunction machine according to a second embodiment of the present invention. It is explanatory drawing explaining the powder moving member and powder removal member in the multifunctional machine which concerns on Embodiment 2 of this invention. FIG. 10 is a main part configuration diagram illustrating a main part configuration of a waste toner box in a multifunction machine according to a third embodiment of the present invention. FIG. 10 is an explanatory diagram for explaining a rotating member of a waste toner box in a multifunction machine according to Embodiment 3 of the present invention.

  Hereinafter, the image forming apparatus and the powder recovery apparatus according to the embodiment of the present invention will be described with reference to an example in which the image forming apparatus and the powder collection apparatus are applied to a multifunction machine and a waste toner container that the multifunction machine has and accommodates waste toner, respectively. It will be described in detail based on. However, it goes without saying that the powder recovery apparatus according to the present invention is not limited to the waste toner container, but can be applied to other powders.

(Embodiment 1)

  FIG. 1 is a configuration diagram showing a main configuration of a multifunction machine 100 according to Embodiment 1 of the present invention.

  The multifunction device 100 includes a document table 111 having an operation panel (not shown), the image reading unit 2 and the image forming unit 4 from the upper side. A double-sided automatic document feeder 112 is mounted on the upper surface of the document table 111 so as to be openable and closable with respect to the document table 111 and has a predetermined positional relationship with respect to the surface of the document table 111.

  The double-sided automatic document feeder 112 conveys the originals on the reading waiting tray 112a one by one to a predetermined position on the original platen 111, and after the image reading unit 2 reads one side of the opposed original, the switchback conveyance path. Through this (not shown), the document is turned upside down and conveyed again to a predetermined position on the document table 111. After the image reading unit 2 reads the other side, the original is discharged onto the read tray 112b, and the next original is conveyed from the read waiting tray 112a. The image reading unit 2 sequentially reads double-sided images for each original in accordance with the conveyance of the original by the double-sided automatic document feeder 112.

  The image reading unit 2 is provided below the document table 111, and the image reading unit 2 reads the image of the document conveyed onto the document table 111 by the double-sided automatic document feeder 112. A first scanning unit 113, a second scanning unit 114, an optical lens 115, and a CCD line sensor 116 that reciprocate along the lower surface are provided.

  The first scanning unit 113 includes an exposure lamp 1131 that exposes the surface of the document image and a first mirror 1132 that reflects a reflected light image from the document in a predetermined direction, and is constant with respect to the lower surface of the document table 111. The reciprocating movement is performed at a predetermined scanning speed while maintaining the distance. The second scanning unit 114 includes a second mirror 1141 and a third mirror 1142 that reflect the reflected light image from the document reflected by the first mirror 1132 of the first scanning unit 113 further in a predetermined direction. The reciprocation is performed while maintaining a constant speed relationship with the first scanning unit 113.

  An optical lens 115 and a CCD line sensor 116 are provided in the vicinity of the reciprocation position of the reciprocating motion performed by the first scanning unit 113 and the second scanning unit 114. The optical lens 115 reduces the reflected light image from the document reflected by the third mirror 1142 of the second scanning unit 114, and forms the reduced light image at a predetermined position on the CCD line sensor 116.

  The CCD line sensor 116 sequentially photoelectrically converts the light image formed by the optical lens 115 and outputs it as an electrical signal. The CCD line sensor 116 reads a black and white image or a color image, and R (red), G (green). , B (blue) is a three-line color CCD that outputs line data separated into each color component. The document image information converted into an electrical signal by the CCD line sensor 116 is transferred to an image processing unit (not shown) and subjected to predetermined image data processing.

  An image forming unit 4 is provided below the image reading unit 2, and a sheet tray T and one sheet of paper K stacked and accommodated in the sheet tray T are provided inside the image forming unit 4. A paper feed mechanism 11 that separates and feeds the paper toward the paper transport path is provided.

  A transfer conveyance belt mechanism 13 is provided above the paper feed mechanism 11, and this transfer conveyance belt mechanism 13 is stretched between the driving roller 14 and the driven roller 15 so as to extend substantially in parallel. In this configuration, the sheet K is electrostatically attracted to 16 and conveyed. The sheets K separately supplied one by one are conveyed by the transfer conveyance belt 16 with the timing controlled by a pair of registration rollers 12 arranged on the upstream side of the transfer conveyance belt 16. Further, the sheet K on which an image is formed on one side is conveyed again by the transfer conveying belt 16 in synchronization with the image forming process in the image forming unit 4.

  A fixing unit 41 for fixing the toner image transferred and formed on the sheet K is disposed on the downstream side of the transfer conveying belt 16 in the sheet conveying path. The sheet K that has passed through the nip portion between the pair of fixing rollers of the fixing unit 41 passes through a conveyance direction switching gate 18 and is discharged onto a discharge tray (not shown) attached to the outer wall of the multifunction peripheral 100 by a discharge roller 19. Is discharged.

  The conveyance direction switching gate 18 selectively selects a conveyance path of the fixed sheet K between a path for discharging the sheet K onto the discharge tray and a path for resupplying the sheet K by the transfer conveyance belt mechanism 13. It is to switch. The paper K whose transport direction has been switched again toward the transfer transport belt mechanism 13 by the transport direction switching gate 18 is turned upside down via the switchback transport path 21 and then supplied again by the transfer transport belt 16.

  On the upper side of the transfer conveyance belt 16, the first image forming station Pa, the second image forming station Pb, the third image forming station Pc, and the fourth image are classified into black, cyan, magenta, and yellow, respectively. Forming stations Pd are arranged in parallel in order from the upstream side of the sheet conveyance path in the vicinity of the transfer conveyance belt 16. The transfer conveyance belt 16 is frictionally driven by the driving roller 14 in the direction indicated by an arrow Z in FIG. 1 to carry the sheet K fed through the sheet feeding mechanism 11 and transfer the sheet K to the image forming station (developing unit) Pa. To Pd sequentially.

  The image forming stations Pa, Pb, Pc, and Pd have substantially the same configuration, and have photosensitive drums 22a, 22b, 22c, and 22d that are driven to rotate in the direction of arrow F in FIG. Yes. Around the photosensitive drums 22a to 22d, electrostatic chargers 23a, 23b, 23c, and 23d for uniformly charging the photosensitive drums 22a to 22d, and electrostatic latent images formed on the photosensitive drums 22a to 22d, respectively. Developing devices 24a, 24b, 24c, and 24d having developing rollers 34a, 34b, 34c, and 34d for developing the toner by adhering thereto are disposed.

  Further, the discharging devices 25a, 25b, 25c, and 25d for transferring the toner images on the developed photosensitive drums 22a to 22d onto the paper K and the cleaning device for removing the waste toner remaining on the photosensitive drums 22a to 22d. 26a, 26b, 26c, and 26d are arranged along the rotation direction of the photosensitive drums 22a to 22d, respectively.

  Laser beam scanner units 27a, 27b, 27c, and 27d are provided above the respective photosensitive drums 22a to 22d. The laser beam scanner units 27a to 27d include a semiconductor laser element (not shown) that emits dot light based on image data to be formed, and a polygon mirror 50 for reflecting the laser beam from the semiconductor laser element in the main scanning direction. And fθ lens 51, mirrors 52, 53, and the like for imaging the laser beam reflected by polygon mirror 50 on the surface of corresponding photosensitive drums 22a-22d.

  In the laser beam scanner units 27a, 27b, 27c, and 27d, a pixel signal corresponding to a black component image, a pixel signal corresponding to a cyan component image, and a pixel signal corresponding to a magenta component image in a color original image are yellow. Pixel signals corresponding to the color component images are respectively input.

  With the color component images corresponding to the laser beam scanner units 27a to 27d, electrostatic latent images corresponding to the color-converted document image information are formed on the photosensitive drums 22a to 22d. The developing devices 24a, 24b, 24c, and 24d are detachably provided with toner cartridges 305, respectively.

  More specifically, the developing device 24a is provided with a toner cartridge 305a containing black toner. The developing device 24b is provided with a toner cartridge 305b that contains cyan toner. The developing device 24c is provided with a toner cartridge 305c containing magenta toner. The developing device 24d is provided with a toner cartridge 305d that contains yellow toner. The electrostatic latent images on the photosensitive drums 22a to 22d are developed with the toners of the toner cartridges of these colors.

  Between the first image forming station Pa and the paper feeding mechanism 11, a paper suction charger 28, which is a brush charger, is provided. The sheet adsorbing charger 28 charges the surface of the transfer conveyance belt 16 that is a transfer carrier, so that the sheet K supplied from the paper feeding mechanism 11 is securely adsorbed on the transfer conveyance belt 16. The sheet is conveyed from the first image forming station Pa to the fourth image forming station Pd without deviation. Further, a discharger 29 for static elimination is provided between the fourth image forming station Pd and the fixing unit 41 at a portion almost directly above the drive roller 14. An AC current for separating the sheet K electrostatically attracted to the transfer conveyance belt 16 from the transfer conveyance belt 16 is applied to the discharger 29 for discharging.

  In the digital multi-function peripheral having the above-described configuration, a cut sheet-like sheet K is used, and when the sheet K is fed from the sheet tray T and supplied into the guide of the sheet feed conveyance path of the sheet feed mechanism 11. The tip portion is detected by a sensor (not shown), and is temporarily stopped by the pair of registration rollers 12 based on a detection signal output from the sensor. Further, the sheet K is fed onto the transfer conveyance belt 16 rotating in the direction indicated by the arrow Z in FIG. 1 by adjusting the timing with each of the image forming stations Pa to Pd. The transfer / conveying belt 16 that has been charged is stably conveyed and supplied while passing through the image forming stations Pa to Pd.

  In each of the image forming stations Pa to Pd, each color toner image is formed and superimposed on the support surface of the paper K that is electrostatically attracted and transported by the transfer transport belt 16, and is formed by the fourth image forming station Pd. When the image transfer is completed, the paper K is peeled off from the transfer conveyance belt 16 by the discharger 29 for discharging in order from the leading end portion thereof and guided to the fixing unit 41. The paper K on which the toner image is fixed is discharged from a paper discharge port (not shown) onto a paper discharge tray (not shown).

  FIG. 2 is a partial configuration diagram partially showing the periphery of the toner cartridges 305a, 305b, 305c, and 305d in the multi-function device 100 according to the first embodiment of the present invention. FIG. 3 is a diagram according to the first embodiment of the present invention. 3 is a schematic diagram schematically illustrating toner cartridges 305a, 305b, 305c, and 305d in the multifunction peripheral 100. FIG.

  Hereinafter, for convenience of explanation, the image forming stations Pa to Pd are the image forming station P, the toner cartridges 305a, 305b, 305c, and 305d are the toner cartridge 305, and the photosensitive drums 22a, 22b, 22c, and 22d are the photosensitive drum 22. The cleaning devices 26a, 26b, 26c, and 26d may be abbreviated as the cleaning device 26 in some cases.

  The image forming station P includes a waste toner transport mechanism 307. As described above, the image forming station P includes the cleaning device 26 that removes the waste toner remaining on the photosensitive drum 22. The waste toner removed by the cleaning device 26 is removed by the waste toner transport mechanism 307 by the toner cartridge 305. Conveyed to the side.

  The image forming station P includes a toner cartridge 305 that stores unused toner, and a waste toner box 306 (powder collection device) that stores waste toner. The removed waste toner has different charging characteristics from the unused toner, and contains foreign matters such as paper dust, and is therefore separately stored in the waste toner box 306.

  The waste toner box 306 is configured to be detachable from the toner cartridge 305, and the waste toner transported by the waste toner transport mechanism 307 is collected by the waste toner box 306.

  As shown in FIG. 3, the toner cartridge 305 is a rectangular casing, and a waste toner box 306 is provided on one end side in the longitudinal direction, and information is transmitted to and received from the multifunction device 100 on the other end side. A terminal 309 protrudes in the longitudinal direction.

  The terminal 309 is connected to a corresponding connector on the multifunction device 100 side, stores usage information of the toner cartridge 305, full information when the waste toner box 306 is full, and the like, and sends the information to the multifunction device 100.

  FIG. 4 is a plan view of the waste toner box 306 in the multifunction machine 100 according to the first embodiment of the present invention. FIG. 5 is a case where the canopy 3061 is removed from the multifunction machine 100 according to the first embodiment of the present invention. 4 is a plan view of a waste toner box 306 of FIG. FIG. 6 is a main part configuration diagram showing a main part configuration of the waste toner box 306 in the multi function device 100 according to the first embodiment of the present invention. In FIG. 6, the solid circle indicates the rotation trajectory of the powder moving member 3067.

  The waste toner box 306 includes a storage unit 3063 that stores waste toner, and a canopy 3061 that covers an opening of the storage unit 3063, which will be described later. The housing portion 3063 is a rectangular housing, and a rectangular opening is formed on the upper surface. The canopy 3061 has a rectangular plate shape that follows the opening of the housing portion 3063, and an opening 3062 through which waste toner passes is formed on the short side. The waste toner transported by the waste toner transport mechanism 307 is dropped toward the opening 3062 of the canopy 3061 and falls into the storage unit 3063 through the opening 3062.

  A waste toner receiving plate 3064 that receives waste toner falling through the opening 3062 is provided immediately below the opening 3062. The waste toner receiving plate 3064 is provided obliquely with respect to the bottom surface 3065 of the housing portion 3063 and has a rectangular plate shape. The waste toner receiving plate 3064 is made of, for example, PET (polyethylene terephthalate), PTFE (polytetrafluoroethylene), polyethylene, polyimide, polycarbonate, or the like. The thickness of the waste toner receiving plate 3064 may be, for example, in the range of 0.1 mm to 0.25 mm, and preferably about 0.188 mm.

  The waste toner receiving plate 3064 receives the waste toner falling through the opening 3062 and drops it on the bottom surface 3065 below. Further, the waste toner receiving plate 3064 has elasticity and is deformed by collision with a powder moving member 3067a described later, and is restored to its original shape after the powder moving member 3067a passes (see FIG. 8). Further, the waste toner receiving plate 3064 may be configured such that Teflon (registered trademark) processing or the like is performed on one surface in contact with the falling waste toner. Accordingly, the waste toner can be more easily dropped on the one surface of the waste toner receiving plate 3064.

  The lower end portion of the waste toner receiving plate 3064 is formed in a comb shape. In other words, the waste toner receiving plate 3064 has a comb-teeth-shaped portion that collides with the powder moving member 3067a. Accordingly, the waste toner receiving plate 3064 is configured such that the movement of deformation and restoration at such a comb-like portion becomes larger.

  As described above, the waste toner has almost no charging property and remarkably deteriorates in fluidity, and also contains foreign matters such as paper dust. In the MFP 100 according to the first embodiment of the present invention, the waste toner dropped on the one surface of the waste toner receiving plate 3064 by providing the comb-like portion at the lower end of the waste toner receiving plate 3064. Can be more reliably dropped onto the bottom surface 3065.

  That is, in the MFP 100 according to the first embodiment of the present invention, the waste toner receiving plate 3064 is provided in this manner, so that the waste toner falling through the opening 3062 adheres to the inner surface of the storage unit 3063. In addition, the waste toner can be moved more efficiently by the powder moving member 3067a.

  The bottom surface 3065 of the accommodating portion 3063 is rectangular, and rotating columns 3066a and 3066b for rotating the powder moving members 3067a and 3067b are installed on the side walls on both long sides of the bottom surface 3065. That is, both ends of the rotating columns 3066a and 3066b are rotatably held on the side wall of the housing portion 3063 so as to be parallel to the bottom surface 3065. The rotating column 3066a and the rotating column 3066b are parallel to each other. Hereinafter, for convenience of description, the rotating columns 3066a and 3066b may be abbreviated as rotating columns 3066.

  The rotating column 3066a and the rotating column 3066b have a columnar shape, and a powder moving member 3067a and a powder moving member 3067b are projected on the circumferential surface. That is, the rotating column 3066a and the rotating column 3066b hold the powder moving member 3067a and the powder moving member 3067b in the radial direction, respectively. The present invention is not limited to this, and the rotating column 3066a and the rotating column 3066b may have a plurality of powder moving members 3067a and a plurality of powder moving members 3067b.

  Therefore, the powder moving member 3067a and the powder moving member 3067b rotate by the rotation of the rotating column 3066a and the rotating column 3066b. Hereinafter, for convenience of explanation, the powder moving member 3067a and the powder moving member 3067b may be abbreviated as a powder moving member 3067.

  During the rotation operation, the powder moving member 3067 collects waste toner on the bottom surface 3065 and moves it away from the waste toner receiving plate 3064 so that the waste toner is uniformly accumulated in the storage unit 3063. . The powder moving member 3067 has a rectangular plate shape having a hollow portion. The said hollow part is a rectangle, for example. In other words, the powder moving member 3067 has a lattice shape. The powder moving member 3067 is held by the rotating column 3066 so that the longitudinal direction is along the axial direction of the rotating column 3066.

  On the other hand, the powder moving member 3067a is configured such that the dimension in the short direction is longer than the distance from the rotating column 3066a to the tip of the waste toner receiving plate 3064. The size of the powder moving member 3067b in the short direction may be the same as or different from the size of the powder moving member 3067a.

  FIG. 7 is an explanatory diagram for explaining a connection state between the powder moving member 3067a and the waste toner receiving plate 3064 in the multifunction machine 100 according to the first embodiment of the present invention. As described above, when the powder moving member 3067a is rotated by the rotation of the rotating column 3066a, the powder moving member 3067a hits the tip (comb-shaped portion) of the waste toner receiving plate 3064. More specifically, the tip of the powder moving member 3067a hits the comb-shaped portion of the waste toner receiving plate 3064 from the upper side to the lower side, and the comb-shaped portion and its periphery are deformed by the impact, Thereafter, the comb-shaped portion and its periphery are restored to the original shape. At this time, if the waste toner remains on the one surface of the waste toner receiving plate 3064, it falls to the bottom surface 3065 due to such an impact.

  A gear 3069a and a gear 3069b for rotating the rotating column 3066a and the rotating column 3066b are respectively fitted on one end portions of the rotating column 3066a and the rotating column 3066b. A gear 3069c for rotating the gear 3069a and the gear 3069b is provided between the gear 3069a and the gear 3069b. The gear 3069a and the gear 3069b mesh with the gear 3069c. Therefore, by rotating the gear 3069c, the rotating column 3066a and the rotating column 3066b can be rotated via the gear 3069a and the gear 3069b.

  A dust removing member 3068 for removing waste toner adhering to the powder moving member 3067a is provided above the rotating column 3066a and on the inner surface of the canopy 3061. The powder removing member 3068 is provided so as to project toward the rotating column 3066a.

  More specifically, the powder removing member 3068 has a rectangular plate shape, and is configured such that the edge of the tip is parallel to the rotating column 3066a. The powder removal member 3068 has a base on the canopy 3061 side disposed on the opposite side of the waste toner receiving plate 3064 with respect to the rotating column 3066a. In other words, the base of the powder removing member 3068 is disposed on the inner surface of the canopy 3061 between the rotating column 3066a and the rotating column 3066b. Further, the powder removal member 3068 is configured such that the angle formed by the contact surface 3068a in contact with the powder moving member 3067a and the inner surface of the canopy 3061 is 90 degrees or more. The angle is, for example, 90 degrees or more and 170 degrees or less.

  Further, the dust removing member 3068 is configured such that the dimension from the base to the tip is longer than the distance from the base to the rotating column 3066a, and the tip is elastically contacted with the rotating column 3066a. .

  Further, the powder removing member 3068 is made of, for example, PET (polyethylene terephthalate), PTFE (polytetrafluoroethylene), polyethylene, polyimide, polycarbonate, etc., and has a thickness of about 0.35 mm, and a waste toner receiving plate 3064. Has less elasticity.

  The powder removing member 3068 having such a configuration collides with the rotating powder moving member 3067a, and removes the waste toner adhering to the powder moving member 3067a on the opposite side of the waste toner receiving plate 3064 with respect to the rotating column 3066a. The bottom surface 3065 is dropped.

  That is, in the role of the powder moving member 3067a that moves the waste toner dropped from the waste toner receiving plate 3064 from such a location, the waste toner is returned to its original position by rotating the powder moving member 3067a while the waste toner is attached. It is possible to prevent the efficiency from being lowered.

  The powder removing member 3068 may be deformable to the extent that the rotation of the powder moving member 3067a is not prevented, and may be less elastic than the waste toner receiving plate 3064 that drops waste toner by change and restoration. Therefore, the powder removing member 3068 has lower elasticity than the waste toner receiving plate 3064 depending on the function.

  FIG. 8 is a partially enlarged view for explaining the operation of the powder moving member 3067a, the waste toner receiving plate 3064, and the powder removing member 3068 in the waste toner box 306 in the multifunction machine 100 according to Embodiment 1 of the present invention. .

  When the powder moving member 3067a rotates with the waste toner attached, the powder removing member 3068 whose tip side is in elastic contact with the rotating column 3066a has a contact surface 3068a that contacts the powder moving member 3067a and is attached to the powder moving member 3067a. Scrape off the waste toner.

  Since the powder moving member 3067a from which the waste toner has been dropped continues to rotate, the powder removing member 3068 is deformed as shown in FIG. 8 so as not to prevent the powder moving member 3067a from rotating. Thereafter, when the powder moving member 3067a passes, the powder removing member 3068 is restored to its original shape.

  In the above description, the case where the powder removing member 3068 is provided only above the rotating column 3066a has been described as an example, but the present invention is not limited thereto. For example, a powder removal member 3068 may be provided above the rotary column 3066b.

(Modification)
In the above, the base of the powder removing member 3068 is disposed on the inner side of the canopy 3061 on the opposite side of the waste toner receiving plate 3064 with respect to the rotating column 3066a, that is, between the rotating column 3066a and the rotating column 3066b. Although the case has been described as an example, the present invention is not limited to this.

  For example, you may comprise so that the base part of the powder removal member 3068 may be arrange | positioned just above the rotating column 3066a. That is, the powder removing member 3068 may be configured to be provided on the inner surface of the canopy 3061 and directly above the rotary column 3066a and to protrude perpendicularly to the inner surface of the canopy 3061.

(Embodiment 2)
The multi-function device 100 according to the second embodiment is different from the first embodiment in the powder moving member 3067 and the powder removing member 3068.

  FIG. 9 is a partial configuration diagram showing a main configuration of the waste toner box 306 in the multi function device 100 according to the second embodiment of the present invention. In FIG. 9, the solid circle indicates the rotation trajectory of the powder moving member 3067X.

  In the MFP 100 according to the second embodiment of the present invention, the powder removal member 3068X of the waste toner box 306 is disposed in the same manner as the powder removal member 3068 of the modification of the first embodiment. That is, in the second embodiment, the powder removing member 3068X is provided on the inner surface of the canopy 3061 and directly above the rotating column 3066a, and is configured to protrude vertically from the inner surface of the canopy 3061 toward the rotating column 3066a. Has been.

  In the second embodiment, the powder removing member 3068X is devised so as to intersect each other without being deformed by the rotation of the powder moving member 3067X.

  FIG. 10 is an explanatory diagram for explaining the powder moving member 3067X and the powder removing member 3068X in the multifunction machine 100 according to the second embodiment of the present invention. FIG. 10 shows a state where the rotating powder moving member 3067X intersects the powder removing member 3068X when it is perpendicular to the inner surface or the bottom surface 3065 of the canopy 3061.

  The powder moving member 3067X has a plate shape having a hollow portion 3067XY. The hollow portion 3067XY is substantially rectangular. In other words, the powder moving member 3067X has inverted “L” -shaped protrusions at both ends, and the “T” -shaped protrusions are equal between the inverted “L” -shaped protrusions at both ends. Projected at intervals. The configuration of the other powder moving member 3067X is the same as that of the powder moving member 3067 of the first embodiment, and a description thereof is omitted.

  As described above, the powder removing member 3068X has a plate shape protruding vertically from the inner surface of the canopy 3061 toward the rotary column 3066a. Moreover, as for the powder removal member 3068X, the recessed part and the convex part are formed in the end part by the side of the rotating column 3066a in alignment.

  In the powder removing member 3068X, the concave portion has a shape following the inverted “L” -shaped protrusion of the powder moving member 3067X or a shape following the “T” -shaped protrusion. The convex portion has a shape that follows the hollow portion 3067XY of the powder moving member 3067X.

  In the MFP 100 according to the second embodiment of the present invention, since the powder moving member 3067X and the powder removal member 3068X have the above-described configuration, the powder moving member 3067X and the powder removal member 3068X are engaged with each other. have. Therefore, the powder moving member 3067X can be rotated without contacting the powder removing member 3068X.

  As described above, the waste toner has almost no charging property, and the fluidity is remarkably lowered. Since the mixed paper powder adheres the waste toners, the fluidity is further lowered and the toner tends to aggregate. For this reason, it is assumed that the hollow portion 3067XY of the powder moving member 3067X is filled with waste toner.

  In contrast, in the MFP 100 according to the second embodiment, the convex portion of the powder removing member 3068X has a shape that follows the hollow portion 3067XY of the powder moving member 3067X. Therefore, when the powder moving member 3067X rotates, the convex portion of the powder removing member 3068X passes through the hollow portion 3067XY of the powder moving member 3067X, and the waste toner in the hollow portion 3067XY can be surely dropped.

  The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

(Embodiment 3)
FIG. 11 is a main part configuration diagram showing a main part configuration of the waste toner box 306 in the multifunction machine 100 according to the third embodiment of the present invention.

  In the MFP 100 according to the third embodiment of the present invention, the waste toner box 306 has the same configuration as the waste toner box 306 of the second embodiment. However, the waste toner box 306 according to Embodiment 3 further includes rotating members 3070,..., 3070 that are rotated by the rotation of the powder moving members 3067Za and 3067Zb. Hereinafter, for convenience of explanation, the powder moving members 3067Za and 3067Zb may be abbreviated as a powder moving member 3067Z.

  FIG. 12 is an explanatory view for explaining the rotating member 3070 of the waste toner box 306 in the multi function device 100 according to Embodiment 3 of the present invention.

  In the multi function device 100 according to Embodiment 3 of the present invention, the powder moving member 3067Za and the rotating column 3066a, and the powder moving member 3067Zb and the rotating column 3066b are each in a crank shape. In addition, the powder moving member 3067Za and the powder moving member 3067Zb, and the rotating column 3066a and the rotating column 3066b are arranged in parallel along the longitudinal direction of the bottom surface 3065. The powder moving member 3067Za and the powder moving member 3067Zb are configured to rotate at the same period.

  The powder moving member 3067Z is configured to have a comb-teeth shape. That is, the powder moving member 3067Z has a concave portion and a convex portion. The powder moving member 3067Z moves the waste toner at the convex portion when rotating. That is, the convex portion of the powder moving member 3067Z prevents the waste toner from being so-called caked or stuck, and uniformly stores the waste toner in the storage portion 3063.

  A rotating member 3070 is held in the recess of the powder moving member 3067Z. The rotating member 3070 has a rod shape, and both end portions are held by the recesses between the powder moving members 3067Z. That is, one end of the rotating member 3070 is rotatably held by the recess of the powder moving member 3067Za, and the other end is rotatably held by the recess of the powder moving member 3067Zb.

  The waste toner box 306 according to Embodiment 3 includes four rotating members 3070 and has, for example, a rectangular column shape. These rotating members 3070,..., 3070 are provided so as to be orthogonal to the rotating column 3066a and the rotating column 3066b, and are arranged in parallel along the longitudinal direction of the rotating column 3066a and the rotating column 3066b. Needless to say, the number of rotating members 3070 is not limited to this.

  The rotating members 3070,..., 3070 having such a configuration are rotated in an elliptical shape when the powder moving member 3067Z is rotated. The rotating members 3070,..., 3070 move the waste toner in the storage unit 3063 when rotating, so that the waste toner can be uniformly stored in the storage unit 3063.

  Further, the waste toner box 306 according to Embodiment 3 of the present invention is not limited to the above configuration. For example, the structure which protruded from the upper surface and / or lower surface of the rotation member 3070 may be sufficient. Accordingly, the rotating members 3070,..., 3070 can move the waste toner more effectively when rotating.

  The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In Embodiment 1 of the present invention, in a powder recovery apparatus 306 having an opening 3062 in the canopy 3061 and a storage box 3063 for recovering powder falling through the opening 3062, the bottom surface 3065 of the storage box 3063 is used. A powder receiving plate 3064 that receives the powder falling from the opening 3062 and drops it to the lower bottom surface, hits the powder receiving plate 3064, drops the powder on the powder receiving plate 3064, and drops the dropped powder into the lower portion The powder moving members 3067a, 3067b, 3067X, 3067Za, and 3067Zb are moved in parallel to the bottom surface 3065, and the powder moving members 3067a, 3067b, 3067X, 3067Za, and 3067Zb are held in the radial direction. Rotating columns 3066a and 3066b to be rotated and the rotating column 30 6a, is provided above the 3066B, the powder moving member 3067a, 3067b, 3067X, 3067Za, characterized in that it comprises a powder removing member 3068,3068X dropping the powder adhering to the 3067Zb.

  According to the present invention, the powder falling through the opening is received by the powder receiving plate and dropped onto the lower bottom surface. When the powder remains on the powder receiving plate, the powder moving member hits the powder receiving plate while rotating by the rotation of the rotating column, and the remaining powder is dropped on the lower bottom surface and dropped. Is moved from the predetermined position to another position. At this time, the powder removing member drops the powder adhering to the powder moving member to the bottom surface.

  Embodiment 2 of the present invention is characterized in that the powder receiving plate 3064 has elasticity.

  According to the present invention, the powder receiving plate has elasticity, and is deformed and restored when the powder moving member hits the powder receiving plate while rotating by the rotation of the rotating column. At this time, the powder remaining on the powder receiving plate falls to the bottom surface.

  In Embodiment 3 of the present invention, the powder removing members 3068 and 3068X are projected from the canopy 3061 toward the rotating shaft, and the tip thereof forms a plate shape parallel to the rotating columns 3066a and 3066b. It is characterized by.

  According to this invention, the said powder removal member is provided in the said canopy above the said rotation column, and is protrudingly provided toward the said rotating shaft from this canopy. Therefore, when the powder moving member rotates, the powder removing member contacts the powder moving member and drops the powder adhering to the powder moving member.

  Embodiment 4 of the present invention is characterized in that the powder removing members 3068 and 3068X have elasticity.

  According to this invention, since the said powder removal member has elasticity, when it hits the rotating powder moving member, it changes, and after the powder moving member passes, it restores. Therefore, the powder removal member does not hinder the rotation of the powder moving member.

  In Embodiment 5 of the present invention, the powder removal members 3068 and 3068X have an angle of 90 degrees or more and 170 degrees between the contact surface 3068a of the powder moving members 3067a, 3067b, 3067X, 3067Za, and 3067Zb and the canopy 3061. It is characterized by the following.

  According to the present invention, the powder removal member is provided on the canopy above the rotating column, and an angle between the contact surface with the rotating powder moving member and the canopy is 90 degrees or more and 170 degrees or less. is there. Therefore, the powder adhering to the powder moving member falls on the opposite side of the powder receiving plate with respect to the rotating column during the contact with the powder removing member.

  In the embodiment 6 of the present invention, the powder receiving plate 3064 is characterized in that the end portion in contact with the powder moving members 3067a, 3067b, 3067X, 3067Za, 3067Zb has a comb shape.

  According to the present invention, since the end portion of the powder receiving plate in contact with the powder moving member has a comb shape, deformation and restoration due to contact with the powder moving member becomes easier.

  In Embodiment 7 of the present invention, the powder moving members 3067a, 3067b, 3067X, 3067Za, 3067Zb have a hollow plate shape, and the end portions of the powder removing members 3068, 3068X correspond to the hollow portion 3067XY. It is comprised so that it may have a shape to do.

  According to the present invention, since the end portion of the powder removal member has a shape corresponding to the hollow portion of the powder movement member, the end portion of the powder removal member is moved when the powder movement member rotates. The powder in the hollow part of the member is dropped.

  In Embodiment 8 of the present invention, the dust removal members 3068 and 3068X have a distance from the base on the canopy 3061 side to the tip, which is longer than the distance from the base to the rotary columns 3066a and 3066b, and the tip side is the rotary column. It is configured to be elastically contacted with 3066a and 3066b.

  According to the present invention, the powder removal member is provided on the canopy above the rotating column, and the tip side thereof is in elastic contact with the rotating column, so that the contact surface with the rotating powder moving member is The formed angle is maintained at 90 degrees or more and 170 degrees or less.

  In Embodiment 9 of the present invention, the powder removing members 3068 and 3068X are such that the base is directly above the rotating columns 3066a and 3066b or opposite the powder receiving plate 3064 with respect to the rotating columns 3066a and 3066b. It is characterized by being arranged on the side.

  According to the present invention, the powder removal member has the base disposed immediately above the rotating column or on the opposite side of the powder receiving plate with respect to the rotating column. During the contact, the powder adhering to the powder moving member falls on the bottom surface on the opposite side of the powder receiving plate with respect to the rotating column.

  In Embodiment 10 of the present invention, a plurality of the rotating columns 3066a and 3066b and the powder moving members 3067a, 3067b, 3067X, 3067Za and 3067Zb are arranged in a crank shape, and each of the powder moving members 3067a, 3067b and 3067X. , 3067Za and 3067Zb are configured to rotate at the same cycle, and the powder moving members 3067a, 3067b, 3067X, 3067Za, and 3067Zb are held at both ends, and the powder moving members 3067a, 3067b, 3067X, 3067Za, A rotating member 3070 that moves by powder by moving by 3067Zb is provided.

  According to the present invention, when the powder moving member is rotated, the rotating member is rotated, and at this time, the rotating member moves the powder and uniformly stores the powder in the storage box. it can.

  Embodiment 11 of the present invention includes the powder recovery device 306 according to any one of the above-described inventions, and toner cartridges 305a, 305b, 305c, and 305d that store unused toner, and the toner cartridges 305a and 305b. , 305c and 305d, the toner is formed on the paper using the toner and the waste toner is stored in the powder collecting device 306.

  According to the present invention, the recovered waste toner is uniformly deposited in the storage box of the powder recovery apparatus.

100 MFP 305a, 305b, 305c, 305d Toner cartridge 306 Waste toner box (powder collection device)
3061 Canopy 3062 Opening 3063 Housing (housing box)
3064 Waste toner receiving plate (powder receiving plate)
3065 bottom surface 3066a, 3066b rotating column 3067a, 3067b, 3067X, 3067Za, 3067Zb powder moving member 3067XY hollow part
3068, 3068X Powder removal member 3068a Contact surface

Claims (11)

In the powder recovery apparatus having an opening in the canopy and including a storage box for recovering the powder falling through the opening,
A powder receiving plate that is provided obliquely with respect to the bottom surface of the storage box, receives the powder falling from the opening, and drops the powder onto the bottom surface;
A powder moving member that hits the powder receiving plate and drops the powder on the powder receiving plate and moves the dropped powder from the bottom surface to the other position;
A rotating column that is provided in parallel with the bottom surface and rotates while holding the powder moving member in a radial direction;
A powder removing apparatus, comprising: a powder removing member provided above the rotating column and configured to drop powder adhering to the powder moving member.   The powder recovery apparatus according to claim 1, wherein the powder receiving plate has elasticity. The powder removal member is
Protruding from the canopy toward the rotating shaft,
3. The powder recovery apparatus according to claim 1, wherein the tip has a plate shape parallel to the rotating column. 4.   4. The powder recovery apparatus according to claim 1, wherein the powder removing member has elasticity.   5. The powder recovery apparatus according to claim 1, wherein the powder removal member has an angle between a contact surface with the powder moving member and the canopy of 90 degrees or more and 170 degrees or less.   6. The powder recovery apparatus according to claim 1, wherein an end portion of the powder receiving plate that is in contact with the powder moving member has a comb shape. The powder moving member has a hollow plate shape,
The powder recovery apparatus according to any one of claims 1 to 6, wherein an end portion of the powder removal member is configured to have a shape corresponding to the hollow portion. The powder removal member is
The distance from the base on the canopy side to the tip is longer than the distance from the base to the rotating column,
The powder recovery apparatus according to any one of claims 1 to 7, wherein a tip end side is configured to elastically contact the rotating column. The powder removal member is
The powder recovery apparatus according to claim 8, wherein the base is configured to be disposed immediately above the rotating column or on the opposite side of the powder receiving plate with respect to the rotating column. The rotating column and the powder moving member form a crank shape and are arranged in parallel.
Each powder moving member is configured to rotate at the same period,
The powder recovery apparatus according to any one of claims 1 to 9, further comprising a rotating member that holds both ends of the powder moving member and rotates the powder by moving the powder moving member. A powder recovery apparatus according to any one of claims 1 to 10,
A toner cartridge for storing unused toner,
An image forming apparatus configured to form an image on a sheet using toner supplied from the toner cartridge, and to store waste toner in the powder collecting apparatus.

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