JP4054692B2 - Deposit removal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deposit removing device that removes deposits from an outer peripheral surface of a roller.
[0002]
[Prior art]
For example, in an image forming machine such as a facsimile machine or a copying machine , an adhering substance removing device is applied to remove one of the adhering paper dust on one roller of a pair of registration rollers arranged in a paper feeding path. Yes. This kind of deposit removing device comprises an deposit removing body and a frame for mounting the deposit removing body, which is arranged in association with the roller. The frame has an opening disposed so as to face the outer peripheral surface of the roller, and is accommodated so that the deposit removing body protrudes from the opening. When the deposit means is accommodated in the opening of the frame, the deposit removing body is caused by friction between the removing member that contacts the outer peripheral surface of the roller and the outer peripheral surface of the rotating roller and the removing member. An engaging portion that can be engaged with the frame is provided in a direction in which the frame rotates. As a typical example of the prior art document disclosing the paper dust removing apparatus configured as described above, the following Patent Document 1 can be cited.
[0003]
[Patent Document 1]
Japanese Patent No. 3251171 [0004]
[Problems to be solved by the invention]
However, in the deposit removing device disclosed in the above-mentioned Japanese Patent No. 3251171, the deposit removing body is surrounded by the opening of the frame and the roller. Remove the frame that accommodates the removal body in the opening from the main body of the image forming machine, and then remove the deposit removal body from the frame, or separate the opening of the frame that accommodates the removal body from the outer peripheral surface of the roller. Then, it is necessary to remove the deposit removing body from the frame, and it is not always easy to replace the deposit removing body.
[0005]
The present invention has been made in view of the above-mentioned facts, and a main technical problem thereof is to provide a new and improved deposit removing apparatus capable of easily replacing the deposit removing body. is there.
[0006]
[Means for Solving the Problems]
According to the present invention, in order to achieve the main technical problem described above, a deposit removing device that removes deposits from the outer peripheral surface of the roller,
Make a deposit removal device that removes deposits from the outer surface of the roller.
An adhering substance removing body, and a frame that is arranged in association with the roller and that is detachably mounted on the adhering substance removing body;
The deposit removing body includes a removing member that comes into contact with the outer peripheral surface of the roller , and a mounting portion integrally including an inner hanging wall and an outer hanging wall,
The length L1 of the inner hanging wall is made longer than the length L2 of the outer hanging wall,
The frame has a mounting wall, and a distal end portion of the mounting wall extends in a direction opposite to the rotation direction of the roller on the side where the distal end portion is positioned;
The inner hanging wall of the deposit removing body is opposed to the outer peripheral surface of the roller, and the tip of the mounting wall of the frame is between the inner hanging wall and the outer hanging wall of the deposit removing body. When sandwiched from above, the deposit removing body is attached to the frame,
When the deposit removal body is forced upward, the deposit removal body is pulled out from the tip of the mounting wall of the frame between the inner and outer suspension walls of the deposit removal body. Can be detached from the frame,
Deposit removing device, characterized in that, is provided.
[0007]
The inner hanging wall is provided with a first cutout portion spaced in the longitudinal direction, and the outer hanging wall is also alternately spaced apart from the first cutout portion of the inner hanging wall. second cutout portion is provided, it is preferred.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a deposit removing apparatus constructed according to the present invention will be described in more detail with reference to the accompanying drawings.
[0009]
FIG. 1 shows a typical example of an image forming machine to which the deposit removing apparatus according to the present invention is applied. The image forming machine denoted as a whole by reference numeral 100 includes a photosensitive drum 104 that rotates in a direction indicated by an arrow 102. Around the photosensitive drum 104 , a main charger 106 that uniformly charges the outer peripheral surface of the photosensitive drum 104 to a predetermined polarity, and the outer peripheral surface of the uniformly charged photosensitive drum 104 corresponds to image information. Laser scanning LSU that forms an electrostatic latent image by scanning with the laser beam, a developing device 108 that develops the electrostatic latent image formed on the outer peripheral surface of the photosensitive drum 104 into a toner image, and the outer periphery of the photosensitive drum 104 A transfer roller 110 for transferring the toner image developed on the surface onto a sheet such as plain paper, a cleaning device 112 for collecting the toner remaining on the outer peripheral surface of the photosensitive drum 104 after the transfer, and the like are arranged.
[0010]
The image forming apparatus 100 is provided with a paper feed path 116 for transporting paper in the direction indicated by an arrow 114, and the paper feed path 116 includes a paper feed cassette 120 having a paper feed roller 118 and containing paper , A sheet separating mechanism 122 that prevents double feeding of sheets, a conveyance roller pair 124, a registration roller pair 126 that conveys the sheet at a predetermined timing, and a transfer unit that transfers a toner image from the outer peripheral surface of the photosensitive drum 104 to the sheet. 128, a fixing roller pair 130 for fixing the toner image on the sheet on which the toner image is transferred, and a discharge roller pair 132 are arranged in this order from the upstream end toward the downstream side. In the image forming apparatus 100 configured as described above, the adhering matter removing apparatus 2 that removes adhering paper dust from the outer peripheral surface of one roller 126a of the registration roller pair 126 arranged in the paper feeding path 116. Is arranged.
[0011]
Continuing the description with reference to FIGS. 2 to 4, the deposit removing device 2 of the present invention is detachably mounted with the deposit removing body 4 and the deposit removing body 4 disposed in association with the roller 126a. And a caulking frame 6. The attached matter removing body 4 in the illustrated embodiment has a removing member 8 that contacts the outer peripheral surface of the roller 126a when the attached matter removing body 4 is attached to the frame 6, and an inner hanging wall 10 and an outer hanging wall 12. Part 14. The removing member 8 of the deposit removing body 4 is preferably composed of a brush member or a sponge member which may be a felt-like acrylic fiber. The attachment portion 14 of the deposit removing body 4 has a shape in which a flat plate member is bent along the longitudinal direction as understood by comparing FIGS. 2 and 3, and the inner corner portion thereof has a longitudinal direction. A plurality of reinforcing pieces 16 are provided at intervals. The inner hanging wall 10 and the outer hanging wall 12 of the mounting portion 14 are suspended in parallel to each other. The length of the inner depending wall 10 L1 is preferably are allowed longer than the length L2 of the outer side downward wall 12. The inner hanging wall 10 is provided with a first notch 18 spaced in the longitudinal direction, and the outer hanging wall 12 is also spaced apart in the longitudinal direction from the first notch 18 of the inner hanging wall 10. It is preferable that the second cutout portions 20 are provided alternately. The frame 6 in the illustrated embodiment has a mounting wall 22 at its upper end, both end walls 23 extending from both ends of the mounting wall 22 (only one side is shown in FIG. 3), a connecting wall 26, An additional wall 28 connected by the wall 26 and a bearing portion 30 on which the shaft portion 126b of the roller 126a is rotatably mounted. An opening 32 is provided in the mounting wall 22, and a lower end portion of the additional wall 28 bent from the opening 32 is extended. The mounting wall 22 is bent, and the tip 24 extends in a direction opposite to the rotation direction of the roller 126a on the side where the tip 24 is positioned. The thickness of the tip portion 24 of the mounting wall 22 is substantially the same as that between the inner hanging wall 10 and the outer hanging wall 12 of the above-described deposit removing body 4. It is preferable that the distal end portion 24 of the mounting wall 22 configured as described above is provided with a third cutout portion 34 spaced in the longitudinal direction. A support portion 36 is provided on the inner corner side of the portion where the mounting wall 22 is bent.
[0012]
When the deposit removing body 4 is attached to the frame 6, the inner hanging wall 10 of the deposit removing body 4 is opposed to the outer peripheral surface of the roller 126 a, and the deposit removing body is attached to the tip 24 of the mounting wall 22 of the frame 5. 4, the removal portion 8 of the deposit removing body 4 is brought into contact with the outer peripheral surface of the roller 126 a, and the inside hanging wall of the deposit removing body 4 is sandwiched between the inner hanging wall 10 and the outer hanging wall 12. The lower end of 10 is brought into contact with a support portion disposed on the inner corner side of the portion where the mounting wall 22 is bent. In this way, the deposit removing body 4 is attached to the frame 6. After that, when the roller 126a is rotated, the removing member 8 of the deposit removing body 4 brought into contact with the outer peripheral surface of the roller 126a removes the paper dust as the deposit from the outer peripheral surface of the roller 126a. At this time, even if the deposit removing body 4 is biased downward in FIG. 2 with respect to the frame 6 by the frictional force between the outer peripheral surface of the roller 126 a and the removing member 8, the front end portion 24 of the mounting wall 22 of the frame 6. Is extended in a direction opposite to the rotation direction of the roller 126a on the side where the tip 24 is positioned, and therefore, the deposit removing body 4 is detached from the tip 24 of the mounting wall 22 of the frame 6. It will never be done.
[0013]
When paper dust that is a deposit accumulates on the removal member 8 and the deposit removal body 4 is removed from the frame 6 and periodically replaced, if the deposit removal body 4 is forced upward, the tip of the frame 6 on the mounting wall 22 The space between the inner hanging wall 10 and the outer hanging wall 12 of the deposit removing body 4 is pulled out from the portion 24, and the deposit removing body 4 is detached from the frame 6. Thereafter, the inner hanging wall 10 of the deposit removing body 4 is made to face the outer peripheral surface of the roller 126a, and the inner hanging wall 10 and the outer hanging wall 12 of the deposit removing body 4 are attached to the tip 24 of the mounting wall 22 of the frame 5. Is removed from above, the removal portion 8 of the deposit removing body 4 is brought into contact with the outer peripheral surface of the roller 126a, and the lower end of the inner hanging wall 10 of the deposit removing body 4 is bent at the mounting wall 22. It is made to contact | abut to the support part currently arrange | positioned by the inner corner side of the site | part which has it. Thus, the deposit removing body 4 is removed from the frame. Since the deposit removing device 2 of the present invention is configured as described above, the deposit removing body 4 can be replaced sufficiently easily.
[0014]
【The invention's effect】
According to the present invention, the deposit removing body can be replaced with sufficient ease.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an embodiment of an internal configuration of an image forming apparatus to which an attached matter removing apparatus of the present invention is applied.
FIG. 2 is an enlarged partial cross-sectional view of the deposit removing device shown in FIG.
FIG. 3 is a perspective view of the deposit removing device shown in FIG.
4 is a partially enlarged perspective view of the deposit removing body in the deposit removing apparatus shown in FIG. 1. FIG.
[Explanation of symbols]
2: Deposit removing device 4: Deposit removing body 6: Frame 8: Removal member 10: Inner hanging wall 12: Outer hanging wall 14: Mounting portion 18: First notch portion 20: Second notch portion 22: Mounting Wall 24: Tip 34: Third notch 126a: Roller

Claims (2)

Make a deposit removal device that removes deposits from the outer surface of the roller.
An adhering substance removing body, and a frame that is arranged in association with the roller and that is detachably mounted on the adhering substance removing body;
The deposit removing body includes a removing member that comes into contact with the outer peripheral surface of the roller, and a mounting portion integrally including an inner hanging wall and an outer hanging wall,
The length of the inner depending wall L1 longer allowed et been than the length L2 of the outer depending wall,
The frame has a mounting wall, and a distal end portion of the mounting wall extends in a direction opposite to the rotation direction of the roller on the side where the distal end portion is positioned;
The inner hanging wall of the deposit removing body is opposed to the outer peripheral surface of the roller, and the tip of the mounting wall of the frame is between the inner hanging wall and the outer hanging wall of the deposit removing body. When sandwiched from above, the deposit removing body is attached to the frame,
When the deposit removal body is forced upward, the deposit removal body is pulled out from the tip of the mounting wall of the frame between the inner and outer suspension walls of the deposit removal body. Can be detached from the frame,
A deposit removing apparatus characterized by that. The inner hanging wall is provided with a first cutout portion spaced in the longitudinal direction, and the outer hanging wall is also alternately spaced apart from the first cutout portion of the inner hanging wall. The deposit removing apparatus according to claim 1 , wherein a second notch is provided in the first notch.

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