JPH075500Y2 - Copier cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] This invention relates to a cleaning device for a copying machine.
More specifically, the present invention relates to an improvement of a cleaning device of a copying machine, which is disposed at a position close to a photoconductor and collects toner attached to the surface of the photoconductor.

[Prior Art] Generally, a cleaning device of this type is attached to a cleaner main body disposed in a position close to a photoconductor, and a blade that comes in contact with the surface of the photoconductor so as to be separable from the surface of the photoconductor, and below the blade. It is provided with a film seal which is positioned and receives the toner scraped by the blade, and an auger which conveys the scraped toner outward. In the conventional cleaning device thus configured, the blade and the film seal contact the surface of the photoconductor during the copy cycle, and the toner adhering to the photoconductor is scraped off by the blade and received by the film seal. After that, the toner accumulated in the cleaner body is conveyed to the outside by an auger to be collected, and a retract mechanism for separating the blade and the film seal from the photoconductor at the time other than the copy cycle is provided. Many things are adopted.

[Problems to be Solved by the Invention] However, in the conventional cleaning device having the film seal retract mechanism as described above, when the retract amount of the film seal is deviated by repeated use, the film separated from the photoconductor is used. There is a problem in that the seal comes into contact with peripheral devices arranged inside the cleaner body, and the film seal is damaged. If the film seal is damaged, the toner scraped off the photoconductor by the blade will spill from the cleaner body,
Peripheral devices may be contaminated with toner. Such a problem is remarkable in a small copying machine in which the space around the photoconductor is small and various devices are densely arranged.

[Means for Solving Problems] The present invention has been made in view of the above circumstances, and an object thereof is to regulate the retract amount when the film seal is separated from the photoconductor with a simple configuration. It is to provide a cleaning device for a copying machine.

That is, the cleaning device for a copying machine according to the present invention includes a blade attached to a cleaner main body disposed in a position close to a photoconductor and releasably contacting the surface of the photoconductor, and a blade contacting the photoconductor. A cleaning device for a copying machine, which is provided so as to be separable and has a film seal for receiving the toner scraped off from the photoconductor by the blade at the abutting position, and an auger for conveying the scraped toner outward. In the above, while fixing the film seal to a supporting member rotatably attached to the cleaner body with a screw body, the tip of the screw body penetrating the supporting member is attached to the cleaner body to rotate the supporting member. Accordingly, a housing that appropriately abuts is provided, and the retract amount between the film seal and the photoconductor is regulated according to the protruding amount of the screw body with respect to the support member. It is characterized in that.

In the present invention, the support member may be any member as long as it is rotatably attached to the cleaner body, but it is preferable that the support member is rotatably attached to the rotary shaft portion of the auger. In this case, the support member may be integrated, but the support member main body rotatably attached to the cleaner main body and the film seal are also fixed and detachably fixed to the support member main body. It is more preferable to construct it with a support.

[Operation] According to the above technical means, when the support member rotates with respect to the cleaner body during retracting and the film seal separates from the photoconductor, the film seal is fixed to the support member and penetrates the support member. The tip of the screw body comes into contact with a housing provided in the cleaner body, and when the tip of the screw body comes into contact with the housing, the rotation of the support member with respect to the cleaner body is locked. As a result, the retract amount of the film seal is regulated. At this time, if the amount of protrusion of the screw body with respect to the support member is appropriately changed, the position at which the rotation of the support member is locked also changes. Therefore, the retract amount of the film seal is regulated according to the amount of protrusion of the screw body with respect to the support member. be able to.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a part of the cleaning device of the present invention in cross section, and FIG. 2 is an enlarged sectional view showing the main part thereof. The cleaning device of the present invention is located at a position close to a belt type photoconductor 10. A blade 22 attached to a cleaner main body 20 disposed on a surface of the photoconductor 10 so as to come into contact with and separated from the surface of the photoconductor 10, and a film which is positioned below the blade 22 and receives the toner scraped by the blade 22. The seal 24 and an aus 26 that conveys the scraped toner outward constitute the main part.

The film seal 24 is formed of a plastic sheet such as PET (polyethylene terephthalate),
A support member that is rotatably supported with respect to the cleaner body 20.
While being supported by 30, the supporting member 30 and the cleaner body 20
The photoconductor 10 is constantly contacted by the elastic force of the tension spring 28, which is an elastic means installed on and.

As shown in FIGS. 3 and 4, the support member 30 is an auger attached to both sides of the cleaner body 20 in a penetrating manner.
A bearing portion 31 that is rotatably supported by an auger pipe 29 that surrounds the rotary shaft 27 of 26, a bearing portion 32 that is rotatably supported by the cleaner body 20, and a connecting portion that connects these bearing portions 31, 32. A support member main body 36 having 33 and a retract portion 35 bent and formed via a spring receiving portion 34 protruding from one bearing portion 31, and detachably attached to a connecting portion 33 of the support member main body 36. The support 37 is attached and fixedly supports the film seal 24. The support 37 has a substantially inverted V-shaped cross section. In this case, the film seal 24 is adhered to one piece 38 of the support 37, and the other piece 39 has two fixing and adjusting screws 40, 40.
And is detachably fixed to the connecting portion 33. In this case, the fixing and adjusting screw 40 penetrates the support member 37 and the connecting portion and projects toward the housing 21 side of the cleaner body 20 (indicated by 1 in FIG. 2). The fixing / adjusting screw 40 is configured such that, when the support member 30 is rotated by the engagement of the retract member 42 attached to the cleaner body 20, the protruding end of the support member 30 contacts the housing 21 to retract the support member 30 and the film seal 24. The amount can be set.

Further, as shown in FIG. 1, the cleaner main body is provided above the auger 26 and in the vicinity of the film seal 24 in the retract direction.
A drive shaft 11 is arranged so as to penetrate 20. A drive gear 12 (pitch circle is shown by a chain line in the figure) is fixed to one end of the drive shaft 11, and the drive gear 12 is fixed to one end of the auger rotation shaft 27 (pitch circle). The circle is shown by a dashed line in the figure).

On the other hand, the retract member 42 is rotatably supported by a pin 43 on one side surface of the cleaner body 20, and its free end is formed by a fan-shaped cam that engages with the retract portion 35 of the support member 30. The cam 42 is provided with an arcuate groove 44 at an eccentric position, and the cam 42 is rotationally displaced by a fixing screw 46 that penetrates through the arcuate groove 44 in a loose fitting manner and is screwed to the cleaner body 20. Is adjustable. That is, when the cam 42 is rotated to rotate the support member 30 and the film seal 24 is separated from the photoconductor 10, the fixing screw 46 is tightened to the cleaner body 20.
42 is fixed in the displaced state, and the film seal
24 is fixed in the retract position.

The blade 22 is rotatably mounted on a spindle 23 provided on the cleaner body 20, and a link mechanism (not shown) for transmitting the operation of a self-holding solenoid 25 mounted on the back surface of the cleaner body 20. By this, the contact position with respect to the photoconductor 10 and the retract position are selectively switched. In this case, the blade 22 is arranged in an inclined shape so as to face the moving direction of the photoconductor 10.

A flocked seal member 48 is provided upright on the upper, lower, left and right edges of the cleaner body 20.

In the cleaning device of the present invention configured as described above, during the copy cycle, the blade 22 contacts the photoconductor 10 and the elastic force of the tension spring 28 urges the support member 30 and the film seal 24 to the contact position. The film seal 24 contacts the photoconductor 10. Then, the toner adhered to the photoconductor 10 during the copy cycle is scraped off by the blade 22 and received by the film seal 24, sent to the bottom of the cleaner body 20, and then collected by an auger 26 from an external toner bottle not shown. Will be collected.

Further, when the photoreceptor 10 or the cleaning device is detached, the blade 22 is retracted by the solenoid 25, the fixing screw 46 is loosened, the cam 42 is rotated, and the support member 30 and the film are resisted against the elastic force of the tension spring 28. Seal 24
After fixing the fixing screw 46 in the state of displacing the film seal 24 to the retract position,
The film seal 24 can be prevented from being damaged by detaching the photoconductor 10 or the cleaning device from the main body of the copying machine.

When the film seal 24 is displaced to the retract position in this manner, the film seal 24 may come into contact with and damage the drive shaft 11 penetrating the cleaner body. By adjusting the protrusion amount 1 of the dual adjustment screw 40 with respect to the support member 30, the retract amount of the film seal 24 can be regulated. That is, when the support member 30 rotates to separate the film seal 24 from the photoconductor 10, the tip of the fixing / adjusting screw 40 protruding from the support member 30 collides with the housing 21 of the cleaner body 20 and is locked. Therefore, this determines the maximum retract amount of the film seal 24. Therefore, if the protrusion amount l of the fixing / adjusting screw 40 with respect to the support member 30 is arbitrarily adjusted, the retract amount of the film seal 24 can be regulated, and the film seal 24 is prevented from coming into contact with peripheral equipment and being damaged. can do.

In the above embodiment, the cleaning device in which the blade 22 is arranged in a slanting shape so as to face the moving direction of the photoconductor 10 has been described, but the invention is not necessarily limited to this structure, and as shown in FIG. A blade 22 arranged in an inclined shape along the moving direction of the photoconductor 10, or
Similar effects can be obtained in a cleaning device having a cleaner brush 50 on the front side of the blade 22 as shown by an imaginary line in the figure. Further, in the above-mentioned embodiment, the case where the cleaning device of the present invention is brought close to the belt type photoconductor has been described, but it goes without saying that the same can be applied to the drum type photoconductor.

[Advantages of the Invention] As described above, according to the cleaning device for a copying machine of the present invention, the retract amount of the film seal is regulated according to the protruding amount of the screw body fixing the film seal with respect to the supporting member. Therefore, by properly setting the protruding amount of the screw body when assembling this device, it is possible to prevent the film seal separated from the photoconductor from contacting and damaging the peripheral equipment, and especially, the various equipments are densely packed. It is effective in a small-sized copying machine that is installed as a unit.

[Brief description of drawings]

FIG. 1 is a side view showing a part of the cleaning device of the present invention in section, FIG. 2 is an enlarged sectional view of an essential part thereof, FIG. 3 is a lateral sectional view of the essential part thereof, and FIG. 4 is a film seal of the present invention. FIG. 5 is a side sectional view showing another embodiment of the present invention. Symbols (10) …… Photoconductor (20) …… Cleaner body (22) …… Blade (24) …… Film seal (25) …… Solenoid (26) …… Auger (27) …… Auger rotating shaft ( 28) …… Extension spring (elastic means) (29) …… Auger pipe (30) …… Support member (35) …… Retract part (36) …… Support member body (37) …… Support body (40)… … Fixing and adjusting screw (adjusting means) (42) …… Cam (retract member) (46) …… Fixing screw (fixing means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirohisa Hoshino 2274 Hongo, Ebina City, Kanagawa Fuji Xerox Co., Ltd. Ebina Works (56) Reference JP 57-135970 (JP, A) 43470 (JP, U)

Claims (3)

[Scope of utility model registration request] 1. A blade which is attached to a cleaner main body disposed in a position close to a photoconductor and which comes into contact with the surface of the photoconductor so as to be able to come into contact with the photoconductor; In the cleaning device of the copying machine, which has a film seal for receiving the toner scraped off from the photosensitive member by the blade at the contact position and an auger for conveying the scraped toner outward, The film seal is fixed to a supporting member rotatably attached by a screw body, and the cleaner body is provided with a housing in which the tip of the screw body penetrating the supporting member abuts appropriately as the supporting member rotates. A clearing device for a copying machine, wherein the retracting amount between the film seal and the photoconductor is regulated according to the protruding amount of the screw body with respect to the supporting member. Burning device. 2. A cleaning device for a copying machine according to claim 1, wherein the support member is rotatably mounted about a rotary shaft portion of the auger. 3. The support member includes a support member main body rotatably attached to the cleaner main body, and a support body that fixes the film seal and is detachably fixed to the support member main body. A cleaning device for a copying machine according to claim 1, characterized in that