JP2005096973A - Paper dust removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remove paper dust without forming paper dust buildup in an innermost part of an equipment body of an image forming device. <P>SOLUTION: This paper dust removing device removes paper dust deposited on an upper face 191 of a blade 19 coming into slide-contact with a regist roller (right regist roller 142) on one side among a pair of regist rollers 14 for feeding a paper sheet P to a photosensitive body drum 12 incorporated in the equipment body 11 of the image forming device 10 and sweeping and collecting paper dust on a peripheral face. A paper dust cleaning member 40 moving in the direction in which the blade 19 is extended, sweeping and collecting paper dust deposited on the upper face 191 of the blade 19, and removing the paper dust is provided. This paper dust cleaning member 40 is constituted so as to change its attitude so that the attitude of a turning body 42 is set to a cleaning attitude for sweeping and collecting paper dust on the blade 19 when the paper dust cleaning member 40 moves toward the direction in which it is pulled out of the equipment body 11 and the attitude of the turning body 42 is set to an evacuation attitude for sweeping and collecting no paper dust on the blade 19 when the member moves toward the direction in which it is pushed into the equipment body 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a paper dust removing apparatus applied to an image forming apparatus such as a copying machine, a facsimile machine, or various printers.

  2. Description of the Related Art Conventionally, a paper dust removing device applied to an image forming apparatus as described in Patent Document 1 is known. This paper dust removing device is deposited on a paper dust removing plate (mylar) that scrapes the paper dust adhering to the peripheral surface of one side of a pair of registration rollers for feeding paper to a photosensitive drum built in the image forming apparatus. Paper dust is removed, and a sponge for wiping the upper surface of the mylar is provided.

The sponge is provided on the developing unit for supplying toner to the photosensitive drum, which is detachably attached to the apparatus main body of the image forming apparatus, and is opposed to the mylar. The upper surface of mylar is wiped off. Therefore, each time the developer unit is attached / detached, the paper dust deposited on the upper surface of the Mylar is wiped off with a sponge, so there is no need to carry out the work only for the purpose of wiping. improves.
JP-A-10-39720

  By the way, in the paper dust removing apparatus described in Patent Document 1, since the sponge is always pressed against the upper surface of the mylar, the sponge is directed toward the opening side of the apparatus body when the developing unit is pulled out. The paper dust is wiped off and the paper dust is swept out, but when the developing unit is pushed into the device main body, the remaining paper dust is pushed into the back of the device main body. There arises a disadvantage that a paper dust pool is formed. In order to remove the paper dust accumulated in the inner part of the device main body, extremely troublesome work such as disassembling the device main body has to be performed, and improvement of this has been desired.

  The present invention has been made in view of the situation as described above, and removes paper dust accumulated on a paper dust removing plate while preventing a paper dust reservoir from being formed in the back of the main body of the image forming apparatus. An object of the present invention is to provide an apparatus for removing paper dust that can be used.

  According to a first aspect of the present invention, there is provided a paper that slidably contacts one of the registration rollers of a pair of registration rollers that feeds the paper to a photosensitive drum built in the apparatus main body of the image forming apparatus and sweeps the paper powder on the peripheral surface. A paper dust removing device for removing paper dust accumulated on the upper surface of the powder removing member, which moves in the extending direction of the paper dust removing member and sweeps and removes the paper dust accumulated on the upper surface of the paper dust removing member A paper dust cleaning member is provided, and the paper dust cleaning member is set in a cleaning posture to sweep paper dust on the paper dust removing member when moving toward one side, while moving toward the other side. In this case, the posture can be changed so as to be set to a retracted posture in which the paper dust on the paper dust removing member is not swept away.

  According to a second aspect of the present invention, in the first aspect of the present invention, a toner container for supplying toner to the photosensitive drum is provided in the device main body, and the toner container extends from the paper dust removing member. The paper dust cleaning member is attached to the toner container, and is configured to be detachable from the apparatus main body by moving in parallel with the direction.

  The invention according to claim 3 is the invention according to claim 2, wherein the paper dust cleaning member is set in a cleaning posture when the toner container is pulled out from the device main body, and is retracted when the toner container is pushed into the device main body. The posture is set as follows.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the paper dust cleaning member is rotatable about a vertical axis attached to a frame of the toner container and about the vertical axis. A pivoting rotating body, a wiping portion formed on the lower edge of the rotating body for slidable contact with the upper surface of the paper dust removing member, and the rotating body rotating when moving toward the one side. It is characterized by comprising a stopper for preventing movement.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the rotating body is provided with a friction member in sliding contact with a member extending in parallel with the paper dust removing member.

  According to the first aspect of the present invention, the paper dust cleaning member that moves in the extending direction of the paper dust removing member and sweeps the paper dust deposited on the upper surface thereof is moved on the one side when the paper dust cleaning member moves toward the one side. While the posture is set to a cleaning posture that sweeps away paper dust, the posture can be changed so that the posture is set to a retracted posture that does not sweep paper dust on the paper dust removing member when moving toward the other side. Therefore, the paper dust once swept to one side by the paper dust cleaning member set to the cleaning posture on the paper dust removing member is swept back to the other side by the paper dust cleaning member changed to the retracted posture. There is nothing.

  Therefore, if one side of the paper dust removing member is set in advance as the paper dust collecting position, it is possible to effectively prevent the paper dust from being swept up and accumulated on the other side, It is possible to avoid the inconvenience that a large-scale cleaning work must be separately performed for the removal.

  According to the second aspect of the present invention, the toner container that supplies the toner to the photosensitive drum via the developing device moves in parallel with the extending direction of the paper dust removing member and is detachable from the apparatus main body. Moreover, since the paper dust cleaning member is attached to the toner container, the paper dust accumulated on the paper dust removing member can be removed every time the toner container is attached to or detached from the apparatus main body.

  According to a third aspect of the present invention, the paper dust cleaning member is set to a cleaning posture when the toner container is pulled out from the apparatus main body, and sweeps out the paper dust to the outside, while retracted when the toner container is pushed into the apparatus main body. Since the posture is set to the position and the paper dust removing member is not wiped, the residual paper dust remaining on the paper dust removing member is swept by the paper dust cleaning member and accumulated in the back of the device body. It can be surely prevented.

  According to the invention of claim 4, the paper dust cleaning member includes a vertical axis attached to the frame of the toner container, a rotary body pivotally supported around the vertical axis, and a lower part of the rotary body. Since it is configured with a wiping portion that is formed on the edge portion and wipes by sliding on the upper surface of the paper dust removing member, and a stopper that prevents rotation of the rotating body when moving toward one side, Although the structure is simple, it is possible to automatically switch the rotating body between the wiping posture and the retracting posture according to the moving direction of the toner container, which can contribute to the reduction of the apparatus cost.

  According to the fifth aspect of the present invention, since the rotating member is provided with the friction member that is in sliding contact with the member extending in parallel with the paper dust removing member, the frictional force of the friction member inserts the toner container into the apparatus main body. The posture of the rotating body can be automatically changed by the detachment operation.

  FIG. 1 is an explanatory diagram showing a positional relationship with other members in the image forming apparatus of the paper dust removing apparatus according to the present invention. As shown in this figure, a photosensitive drum 12 that is rotatable about an axis is mounted in the device main body 11 of the image forming apparatus 10, and the paper P fed from the paper cassette 13 is fed to the left registration roller 141. And is supplied to the front lower position of the circumferential surface of the photosensitive drum 12 through the registration roller pair 14 including the right registration roller 142, and is sandwiched between the rotating transfer roller 15 and the photosensitive drum 12, respectively. The toner image formed on the peripheral surface of the photoconductive drum 12 is transferred to the paper P and subjected to fixing processing by passing between the pair of fixing rollers 16, and then discharged to the top of the apparatus main body 11. The paper is discharged onto the paper tray 17.

  Around the photosensitive drum 12 rotating in the clockwise direction, a cleaning device 121, a charger 122, an exposure device 123, and a developing device 124 are sequentially arranged from the downstream side of the transfer roller 15. The peripheral surface of the photosensitive drum 12 that has been transferred to the paper P is cleaned by removing residual toner by the cleaning device 121 as the photosensitive drum 12 rotates in the clockwise direction, and then charged. The corona discharge from the developing device 122 is obtained and charged uniformly, and subsequently, an electrostatic latent image is formed by irradiation with laser light corresponding to the image data from the exposure device 123, and finally the toner supply from the developing device 124 is obtained. Thus, a toner image is formed, and this toner image is transferred onto the paper P.

  The developing device 124 is supplied with toner from the toner container 18. The toner container 18 is detachable from the apparatus main body 11 by moving forward and backward in the same direction as the direction in which the photosensitive drum 12 extends (the direction orthogonal to the paper surface of FIG. 1) with respect to the apparatus main body 11. Yes.

  In this embodiment, a blade (paper dust) that scrapes and cleans the paper dust adhering to the peripheral surface of the right registration roller 142 at the rear lower portion of the right registration roller 142 of the registration roller pair 14 as a target. A removal member 19 is provided. Therefore, the paper dust adhering to the peripheral surface of the right registration roller 142 rotating clockwise around the axis is scraped off by the blade 19 and then accumulated on the upper surface 191 of the blade 19. When this accumulation amount increases, the dust is scattered in the device main body 11 due to vibrations caused by driving the device, and the environment in the device main body 11 is thereby contaminated. In order to prevent this, the paper dust accumulated on the upper surface 191 of the blade 19 is prevented. A paper dust removing device 20 according to the present invention for removing the ink is employed.

  2 and 3 are perspective views showing an embodiment of the paper dust removing device 20. FIG. 2 is a state where the rotating body is set in a cleaning posture, and FIG. 3 is a posture where the rotating body is in a retracted posture. Each set state is shown. 2 and 3, the XX direction is referred to as the front-rear direction, and the Y-Y direction is referred to as the width direction. In particular, the -X direction is the rear, the + X direction is the front, the -Y direction is the left, and the + Y direction is the right. Called one.

  As shown in FIG. 2, the paper dust removing device 20 has a basic configuration including a moving plate 30 that is long in the width direction and a paper dust cleaning member 40 that is erected on the left side of the moving plate 30. Have. The length of the moving plate 30 is set so that the left edge is located below the blade 19 and is horizontally installed between the opposing wall surfaces in the apparatus main body 11 at a position slightly above the paper cassette 13 (FIG. 1). The frame plate 111 is movable in the front-rear direction while being placed on the frame plate 111.

  An edge weir 31 formed by being bent at a substantially right angle toward the upper side is provided at the rear edge of the moving plate 30, and a cut and raised formed by being cut and raised from the front side at the right position. A strip 32 is provided. The cut-and-raised piece 32 is for attaching the toner container 18 to the moving plate 30 in a state in which the toner container 18 is prevented from coming off, and a locking recess 181 provided in the bottom plate of the toner container 18 is provided on the cut-and-raised piece 32. By fitting, the rear outer wall surface of the toner container 18 abuts on the edge weir 31, so that the mounting state of the toner container 18 with respect to the moving plate 30 is stabilized.

  In addition, a pair of positioning rollers 33 arranged in parallel in the front-rear direction are pivotally supported around respective support shafts 34 at the center position in the width direction on the back surface of the moving plate 30, while The frame plate 111 is provided with a guide groove 112 extending in the front-rear direction corresponding to the positioning rollers 33, and the movable plate 30 is guided in the width direction by the pair of support shafts 34 being guided by the guide groove 112. In this positioning state, it can move forward and backward.

  FIG. 4 is a perspective view showing a temporary view form of the paper dust cleaning member 40. (A) is a state in which the paper dust cleaning member 40 is set in a cleaning posture, and (B) is a paper dust cleaning member 40. Indicates a state in which the posture is set to the retracted posture. In FIG. 4, the directions indicated by X and Y are the same as those in FIG.

  As shown in FIG. 4, the paper dust cleaning member 40 is in the vicinity of the edge weir 31 on the left side of the moving plate 30, and is a standing shaft (vertical axis) 41 erected slightly to the right of the blade 19. And a rotating body 42 pivotally supported around the standing shaft 41 so as to be rotatable. The rotating body 42 includes a cylindrical body 43 fitted on the standing shaft 41, a first projecting plate 44 projecting forward from the standing shaft 41 in the radial direction, and leftward in the same radial direction. A second projecting plate 45 projecting toward the top, and an arc having a substantially right angle with a central angle that is arcuate in plan view and is laid between the upper edges of the first and second projecting plates 44, 45 And a top plate 46. The rotating body 42 is structurally strong due to the presence of the arc top plate 46, and the angle between the first and second projecting plates 44 and 45 is reliably maintained.

  The rotating body 42 includes a cleaning posture (FIG. 2) facing the second protruding plate 45 so as to be substantially perpendicular to the blade 19, and a counterclockwise direction from the cleaning posture around the standing shaft 41 by a predetermined angle. The posture can be changed between the retracted posture (FIG. 3) rotated to the right. In the state where the rotating body 42 is set to the cleaning posture, the second projecting plate 45 abuts against the edge weir (stopper) 31 of the moving plate 30 and no more clockwise around the standing shaft 41. It cannot be turned.

  The second projecting plate 45 has a vertical dimension set longer than that of the first projecting plate 44, and the left edge of the movable plate 30 in a state where the rotating body 42 is set in a cleaning posture. The amount of protrusion from the cylinder 43 is set so as to protrude slightly outward from the portion. The second projecting plate 45 is formed with an outer notch 451 formed by being notched in a bowl shape from a position slightly lower than the upper end to the lowest position, and upward from the lower end. An inner notch 452 is formed by cutting the cylindrical body 43 to the lower end position.

  The second projecting plate 45 on the upper side of the outer notch 451 is in contact with the upper surface 191 of the blade 19 and sweeps away paper dust adhering to the upper surface 191 by the forward movement of the rotating body 42. A near edge (wiping part) 453 is formed. Further, a projecting piece 454 projecting downward formed by a part of the rotating body 42 is provided on the left side of the inner notch 452. The protruding amount of the protruding piece 454 is set slightly shorter than the thickness dimension of the moving plate 30. A friction piece (friction member) 455 made of a soft material such as soft synthetic resin or rubber is attached to the lower surface of the protruding piece 454, and the friction piece 455 has a thickness dimension so as to be in sliding contact with the upper surface of the frame plate 111. Is set.

  Therefore, when the moving plate 30 is moved, the friction piece 455 tries to maintain the current position by the frictional force with respect to the frame plate 111, so that the rotating body 42 rotates around the standing shaft 41 within the rotatable range. Then, the posture is changed between the cleaning posture and the retracted posture according to the moving direction of the moving plate 30.

  Hereinafter, the operation of the paper dust removing device 20 according to the present invention will be described with reference to FIG. 5 and, if necessary, to FIGS. 5A and 5B are explanatory views in plan view for explaining the operation of the paper dust removing device 20. FIG. 5A is a state in which the toner container 18 is being pulled out from the apparatus main body 11, and FIG. Are respectively being pushed into the apparatus main body 11.

  First, in the state shown in FIG. 5A, the toner container 18 is pulled out from the apparatus main body 11 (FIG. 1) in the direction indicated by the arrow. 181 and the cut and raised piece 32 of the moving plate 30 are transmitted to the moving plate 30, whereby the moving plate 30 is directed forward (in the direction of the arrow) while the positioning roller 33 is guided by the guide groove 112 of the frame plate 111. Will move.

  When the moving plate 30 moves forward, the paper dust cleaning member 40 attached to the moving plate 30 is also moved. At this time, the friction piece 455 attached to the protruding piece 454 of the rotating body 42 is moved to the device main body. 11, the frictional piece 455 is difficult to move by this frictional force, so that the rotating body 42 eventually rotates around the standing shaft 41 in the clockwise direction. The posture is set to the cleaning posture in which the protruding plate 45 stops against the edge weir 31 of the moving plate 30. In this state, since the rotating body 42 can no longer rotate around the rotating body 42, the rotating body 42 maintains the cleaning posture with the friction piece 455 being in sliding contact with the frame plate 111. It moves with the moving plate 30 toward the front as it is.

  As the rotating body 42 moves forward, the sweeping edge 453 of the second projecting plate 45 moves forward while sweeping paper dust adhering to the upper surface 191 of the blade 19, and the blade 19 The upper surface 191 is cleaned by removing the accumulated paper dust. The paper dust swept by the sweeping edge 453 is discharged from the front opening of the device main body 11 to the outside of the device main body 11.

  Then, when the toner container 18 is pulled out from the apparatus main body 11, the paper dust on the upper surface 191 of the blade 19 is swept by the rotating body 42 of the paper dust cleaning member 40 that has moved with the toner container 18 via the moving plate 30. The edge 453 is almost completely removed.

  Next, when the toner container 18 is replaced with a new one, and the toner container 18 is continuously pushed into the apparatus main body 11 as shown in FIG. 5B, the paper dust cleaning member 40 moves. It moves with the toner container 18 via the plate 30 and is pushed into the apparatus main body 11. At this time, since the friction piece 455 of the rotating body 42 tends to stay at the current position due to friction with the frame plate 111, a force directed counterclockwise around the standing shaft 41 acts on the rotating body 42 and moves. As the plate 30 advances toward the device main body 11, the rotating body 42 rotates counterclockwise around the upright shaft 41, so that the sweeping edge 453 of the rotating body 42 is disengaged from the upper surface 191 of the blade 19. It becomes a state. At this time, the friction piece 455 interferes with the end edge of the moving plate 30, so that the rotation of the rotating body 42 around the standing shaft 41 is prevented.

  Thus, when the toner container 18 is pushed into the apparatus main body 11, the sweeping edge 453 of the rotating body 42 is removed from the upper surface 191 of the blade 19, so that paper dust remains on the upper surface 191 of the blade 19. However, the paper dust is not swept toward the back of the device main body 11 by the sweeping edge 453. Therefore, the paper dust accumulates in the back of the device main body 11 and the inside of the device main body 11 Inconveniences such as contamination are reliably prevented.

  As described in detail above, the paper dust removing device 20 according to the present invention is one of the registration roller pairs 14 that feed the paper P to the photosensitive drum 12 built in the device main body 11 of the image forming apparatus 10. It removes paper dust accumulated on the upper surface 191 of the blade 19 that slidably contacts the registration roller (right registration roller 142) and sweeps away paper dust on the peripheral surface. A paper dust cleaning member 40 that sweeps and removes paper dust accumulated on the upper surface 191 is provided. When the paper dust cleaning member 40 moves in the direction of being pulled out from the apparatus main body 11, the rotating body 42 is on the blade 19. While the posture is set to a cleaning posture that sweeps away paper dust, the revolving body 42 does not sweep paper dust on the blade 19 when moving toward the direction of being pushed into the device main body 11. It is the attitude capable of changing to the posture set in the posture.

  According to this configuration, the paper dust once swept out of the device main body 11 by the rotating body 42 of the paper dust cleaning member 40 set to the cleaning posture on the blade 19 is changed to the retracted posture. The rotated body 42 is not swept back toward the back of the device main body 11 again, and it is possible to effectively prevent paper dust from being swept up and accumulated in the back of the device main body 11. Therefore, it is possible to avoid the inconvenience that a large-scale cleaning work must be separately performed to remove the accumulated paper dust.

  In addition, the paper dust cleaning member 40 is attached to the toner container 18 which moves parallel to the extending direction of the blade 19 and is detachably attached to the apparatus main body 11 via the moving plate 30. Each time the toner container 18 is attached to or detached from the device main body 11, the paper dust accumulated on the blade 19 is removed, and in particular, it is not necessary to perform an operation only for removing the paper dust accumulated on the upper surface 191 of the blade 19. As a result, the workability of the maintenance work can be improved.

  Further, the paper dust cleaning member 40 is provided with a standing shaft 41 attached to the frame of the toner container 18, a rotating body 42 pivotally supported around the standing shaft 41, and a bottom of the rotating body 42. A sweeping edge 453 that is formed on the edge and wipes in contact with the upper surface 191 of the blade 19 and a stopper that prevents the rotating body 42 from rotating when the rotating body 42 moves in the pulling-out direction of the toner container 18. Since the configuration includes the edge weir 31 provided on the moving plate 30, the rotating body 42 can be moved between the wiping posture and the retracting posture in accordance with the moving direction of the toner container 18 with a simple structure. It becomes possible to switch automatically, and it can contribute to reduction of apparatus cost.

  Furthermore, since the rotating body 42 is provided with a friction piece 455 that is in sliding contact with the frame plate 111, the rotating body 42 is automatically moved by the insertion / removal operation of the toner container 18 with respect to the apparatus main body 11 by the frictional force of the friction member. The structure for changing the posture can be simplified.

  The present invention is not limited to the above embodiment, and includes the following contents.

  (1) In the above embodiment, the friction piece 455 for changing the posture of the rotating body 42 between the cleaning posture and the retracted posture according to the moving direction of the paper dust cleaning member 40 is the second protrusion of the rotating body 42. Although the friction piece 455 needs to contact the frame plate 111, the sweeping edge 453 provided on the same second protruding plate 45 is used as the upper surface 191 of the blade 19. Since the friction piece 455 may be lifted from the frame plate 111 and cannot exert a frictional force when it is brought into contact with the blade, the sweeping edge 453 and the upper surface 191 of the blade 19 may be interposed to avoid such inconvenience. It is necessary to form a slight gap. Therefore, although the paper dust accumulated on the upper surface 191 of the blade 19 can be swept up by the sweeping edge 453, it cannot be scraped off.

  Therefore, instead of providing the friction piece 455, a guide groove having an outward path and a return path for guiding the protrusion 454 of the second protrusion plate 45 is provided on the upper surface of the frame plate 111, and the protrusion 454 is provided in the guide groove. You may make it guide.

  That is, when the toner container 18 is pulled out from the device main body 11, the projecting piece 454 passes through the forward path set so that the rotating body 42 is set to the cleaning posture, while the toner container 18 is moved to the device main body 11. 11, the projecting piece 454 is caused to pass through the return path set so that the rotating body 42 is set in the retracted position.

  Since the projecting piece 454 is guided by such a guide groove, it is not necessary to bring the lower end portion of the projecting piece 454 into contact with the bottom portion of the guide guide groove. Since the paper powder accumulated on the upper surface 191 of the blade 19 can be scraped off, the effect of removing the paper powder can be improved.

  (2) In the above-described embodiment, the frame plate 111 is employed as a member that supports the moving plate 30 and guides its movement. However, the present invention is limited to adopting the frame plate 111. Instead, a guide rail that guides the movement of the moving plate 30 instead of the frame plate 111 may be adopted.

  (3) In the above embodiment, the paper dust removing device 20 is used for removing the paper dust deposited on the upper surface 191 of the blade 19 for the registration roller pair 14 provided immediately upstream of the photosensitive drum 12. However, the present invention is not limited to this, and may be employed to remove paper dust accumulated on a blade provided in another place.

It is explanatory drawing which shows the positional relationship with the other member in the image forming apparatus of the paper dust removal apparatus which concerns on this invention. It is a perspective view which shows one Embodiment of a paper dust removal apparatus, and has shown the state by which the rotary body was set to the cleaning attitude | position. It is a perspective view which shows one Embodiment of a paper dust removal apparatus, and has shown the state by which the rotation body was set to the retracted attitude | position. It is a perspective view which shows the temporary view form of a paper dust cleaning member, (A) is a state where the paper dust cleaning member is set to a cleaning posture, and (B) is a posture setting of the paper dust cleaning member to a retracted posture. Each state is shown. It is explanatory drawing of planar view for demonstrating the effect | action of a paper dust removal apparatus, (A) is the state which is pulling out a toner container from an apparatus main body, (B) is pushing the toner container into an apparatus main body. Each state is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 11 Apparatus main body 111 Frame board 112 Guide groove 12 Photosensitive drum 121 Cleaning device 122 Charger 123 Exposure device 124 Developing device 13 Paper cassette 14 Registration roller pair 141 Left registration roller 142 Right registration roller 15 Transfer roller 16 Fixing roller 16 Pair 17 Discharge tray 18 Toner container 19 Blade (paper dust removing member)
191 Upper surface 20 Paper dust removing device 30 Moving plate 31 Edge weir (stopper)
32 Cutting and raising piece 33 Positioning roller 34 Support shaft 40 Paper dust cleaning member 41 Standing shaft (vertical axis) 42 Rotating body 43 Cylindrical body 44 First projecting plate 45 Second projecting plate 451 Outside notch 452 Inner notch 452 Notch 453 Sweeping edge (wiping part)
454 Projection piece 455 Friction piece (friction member)
46 Arc top plate P paper

Claims (5)

Deposited on the upper surface of the paper dust removing member that slidably contacts one of the registration rollers of the pair of registration rollers that feed the paper to the photosensitive drum built in the apparatus main body of the image forming apparatus and sweeps away the paper dust on the peripheral surface. A paper dust removing device for removing paper dust,
A paper dust cleaning member that moves in the extending direction of the paper dust removing member and sweeps and removes the paper dust deposited on the upper surface of the paper dust removing member is provided;
The paper dust cleaning member is set in a cleaning posture to sweep paper dust on the paper dust removing member when moving toward one side, while paper on the paper dust removing member is moved toward the other side A paper dust removing device, characterized in that the posture can be changed so that the posture can be set to a retracted posture that does not sweep powder.   A toner container for supplying toner to the photosensitive drum via a developing device is provided in the device main body, and the toner container moves in parallel with the extending direction of the paper dust removing member and moves relative to the device main body. 2. The paper dust removing apparatus according to claim 1, wherein the paper dust cleaning member is detachably attached to the toner container.   3. The paper according to claim 2, wherein the paper dust cleaning member is set in a cleaning posture when the toner container is pulled out from the device main body, and is set in a retracted posture when the toner container is pushed into the device main body. Powder removal device.   The paper dust cleaning member includes a vertical axis attached to a frame of the toner container, a rotary body pivotally supported around the vertical axis, and a paper dust removing member formed at a lower edge portion of the rotary body. 2. A wiping portion that slides in contact with the upper surface of the wiping member and a stopper that prevents rotation of the rotating body when moving toward the one side. 4. The paper dust removing device according to any one of 3 above.   5. The paper dust removing device according to claim 4, wherein the rotating body is provided with a friction member in sliding contact with a member extending in parallel with the paper dust removing member.