JPH03115030A - Paper powder removing device for transport roller - Google Patents

Abstract

PURPOSE:To discharge paper powder, etc., attached to a cleaner easily without returning the paper powder to a transport roller or damaging the surface of the transport roller by composing a paper powder removing device in such a way as to prevent the cleaner from getting in contact with the transport roller when the cleaner is pulled out from a housing. CONSTITUTION:When a transport roller 3 is rotated with a cleaner 2 mounted, paper powder, etc., attached to the surface of the transport roller 3 is collected at the part of a cleaning member 13. The paper powder, etc., collected at the cleaning member 13 can be discharged by pulling the cleaner 2 from a housing 1. Namely, for pulling the cleaner 2, this side of the cleaner 2 is pulled off the surface of the transport roller 3 against the energizing force of a cleaner pushing member 10 to release the contact of the cleaning member 13 with the surface of the transport roller 3. At this time, regulation of a holding table 14 and a regulation piece 5b is released. Holding this attitude, the cleaner 2 is pulled out of the housing 1 along a cleaner guide 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper dust removal device for a conveyance roller for conveying paper used in copying machines, printers, printing machines, facsimile machines, and the like.

[Conventional technology]

As an 8-position for removing deposits on the surface of a cylindrical rotating body,
For example, a cleaning device for removing toner adhering to the surface of a photoreceptor drum has been proposed (Japanese Patent Application Laid-open No. 146801/1983). This device attaches a cleaning member to a detachable mechanism provided in a housing that can be attached and detached along the axial direction of the photoreceptor drum.
This made it possible to escape. Further, the housing can be raised and lowered by a conveyance table to prevent the photoreceptor from being damaged.

[Problem to be solved by the invention]

Such a cleaning device is equipped with a special transport platform for raising and lowering the housing, and since this is configured to be operated independently of the attachment and detachment of the cleaning member and the housing, contact must be broken when removing the cleaning member or the housing. In some cases, the cleaning member or the like may be pulled out without doing so, resulting in the problem that the adhered toner may return or damage the surface of the photoreceptor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper dust removal device for a conveyance roller that can easily pull out a cleaner to the outside without paper dust returning to the conveyance roller or damaging the cleaner.

[Means to solve the problem]

The present invention comprises a housing disposed parallel to the axial direction of the conveyance roller, and a cleaner that is installed in and removed from the housing and faces the surface of the conveyance roller. A cleaner guide disposed to form a cleaner guide space that gradually narrows; a suppressing member that presses the cleaner against the surface of the conveying roller within the housing; and a suppressing member that restricts the cleaner from being pulled out when the cleaner is attached. A cleaning member is provided on a surface facing the surface of the conveyance roller when the cleaner is installed in the housing.

Further, a convex portion may be formed on the conveying roller side at the tip end of the cleaning member with respect to the cleaner insertion direction, and the convex portion may be in contact with the surface of the conveying roller when the cleaner is pulled out. Furthermore, a scraper may be provided at a position where the cleaning member comes into sliding contact when the cleaner is pulled out.

(Operation) When the cleaner is housed in the housing, the cleaning member is pressed against the surface of the conveyance roller by the pressing member. - Once installed, the cleaner is restricted from being pulled out in a direction parallel to the conveyance roller by a restriction member. The cleaning member collects paper dust and the like adhering to the conveyance roller as the conveyance roller rotates. When the cleaner is pulled out from inside the housing along the cleaner guide, first, the cleaning member and the conveyance roller are separated to release the restriction. In this way, the cleaner is pulled out along the cleaner guide without coming into contact with the surface of the conveyance roller.

According to the second aspect of the present invention, when the cleaner is pulled out from the housing, the convex portion at the tip of the cleaning member slides on the surface of the conveyance roller, and paper dust and the like remaining on the conveyance roller are completely removed.

According to the third aspect of the present invention, paper dust and the like collected on the cleaning member when the cleaner is pulled out are scraped off by a scraper together with the pulling operation.

〔Example〕

FIG. 1 is an overall configuration diagram of a conveyance roller paper dust removal device showing a first embodiment of the present invention, in which FIG. 1A is a plan view of the housing, FIG. ) is a left side view of the above figure (a) with the cleaner installed.

In figure (a), 1 is the housing of the paper dust removal device;
Inside thereof, various members for guiding the cleaner 2 described below and bringing it into contact with the peripheral surface of the conveying row 53 are housed. As shown in Figure (b), the conveyance roller 3 is in pressure contact with the conveyance roller 53' and rotates synchronously, thereby sandwiching the sheet between the two conveyance rollers 53, 3' and feeding it downstream.

Reference numeral 4 denotes a support plate having a longitudinal dimension in the axial direction of the conveying roller 3 constituting the housing 1, and side plates 5.5' are attached to both ends of the support plate 4. The side plates 5.5' have holes 6.6 (6' not shown) formed at corresponding positions, and are loosely fitted onto the rotating shafts 7 of the conveying rollers 3, respectively.

Thereby, the support plate 4 is arranged parallel to the axial direction of the conveyance roller 3. Further, the housing 1 is fixed at a suitable position on the main body side (not shown) or is locked by a support plate 4 so as not to rotate with the rotation of the conveyance roller 3.

As shown in FIG.
is formed, and a regulating piece 5b for regulating the removal of the cleaner 2 when the cleaner 2 is attached is formed in the notch 5.
It is formed in the remainder of a.

A cleaner guide 8 is fixed to the support plate 4 so as to form a cleaner guide space 9 inside the housing 1 facing the conveying roller 3 and gradually narrowing toward the side plate 5'. Reference numeral 8a is a part of the cleaner guide 8, and is a notch formed at an appropriate position on the copper plate 5 side.

Reference numeral 10 denotes a cleaner pressing member which is pivoted to this notch 8a. The cleaner pressing member 10 uses the restoring force of the spring 11 to bring the installed cleaner 2 into contact with the surface of the conveying roller 3 in parallel and with a suitable pressing force.

FIG. 2 is a perspective view showing the detailed structure of the cleaner pressing member 10, and FIG. 3 is a sectional view taken along line I-II in FIG. 1(a) showing the cleaner pressing member 10 in a pivoted state. .

The cleaner pressing member 10 has a hole 10a, into which the spindle bottle 12 (see FIG. 3) is loosely fitted, formed at a position that is the center of rotation, and is perpendicular to the direction of the spindle formed by the eye hole 10a. Pressing piece 1 of Cleaner 2 on one side in the direction of
A locking hole 10c, into which one end of the spring 11 is locked, is formed on the other side of the spring 11. Note that the other end of the spring 11 is locked to a suitable position on the support plate 4 or the cleaner guide 8.

As a result, the cleaner pressing member 10 is always urged counterclockwise in FIG.

In Figure (b), the cleaner 2 includes a cleaning member 13 having a longitudinal dimension made of, for example, sponge or urethane.
and a holding stand 14, which holds the cleaning member 13 and has, for example, an opening-shaped cross section. Further, the holding stand 14 is provided with a gripping part 14a on the front side thereof, which facilitates the insertion and removal of the cleaner 2.

This cleaner 2 is inserted into the cleaner guide space 9 from the notch 5a of the side plate 5 shown in FIG. In response to the clockwise urging force, the cleaning member 13 of the cleaner 2 uniformly contacts the surface of the conveying roller 3 in the axial direction with a suitable pressing force. In this installed state, as shown in Figure (C), the cleaner 2 cannot be handled as it is, that is, parallel to the rotating shaft 7 in the opposite direction of the arrow A, due to the contact between the holding base 14 and the regulating piece 5b. It is done like this. Due to this regulation when wearing
This is to prevent the bow from being pulled out while the conveyance roller 3 is being driven or from being pulled out while sliding on the surface of the conveyance roller 3.

When the conveyance roller 3 rotates with the cleaner 2 installed,
Paper dust and the like adhering to the surface of the conveyance roller 3 are collected on the cleaning member 13 portion. This cleaning member 13
The collected paper dust and the like are discharged to the outside by pulling the cleaner 2 out of the housing 1.

That is, to pull out the cleaner 2, first, the front side of the cleaner 2 is pulled away from the surface of the conveyance roller 3 against the biasing force of the cleaner pressing member 10 to break the contact between the cleaning member 13 and the surface of the conveyance roller 3. At this time, the holding stand 14
The restriction between the restriction piece 5b and the restriction piece 5b is released. Then, while maintaining this posture, the cleaner 2 is pulled out of the housing 1 along the cleaner guide 8.

FIG. 4 is a plan view of main parts showing a second embodiment of the present invention,
A cleaner 20 is used in place of the cleaner 2 in FIG. 1, and the other components have the same configuration as in FIG. 1.

FIG. 4(a) shows a state in which the cleaner 20 is attached, and FIG. 2(b) shows a state in which the cleaner 20 is being pulled out.

The cleaner 20 has a convex portion 23a on the conveying roller 3 side at the tip.
A cleaning member 23 is provided. The same figure (a
), when the cleaner 20 is attached,
The convex portion 23a is located at least further back than the tip end position of the conveyance roller 3. Then, as shown in FIG. 2(b), the cleaner 20 is
When pulling out the convex portion 23a, the convex portion 23a moves while touching the surface of the conveying roller 3 from its rear tip position to its front position (
Due to this sliding movement), paper dust and the like remaining on the surface of the conveying row 53 are guided to the outside together with the convex portion 23a and are discharged.

FIG. 5 is a main part configuration diagram showing a third embodiment of the present invention,
A scraper 24 and a paper powder receiver 25 are arranged in the configuration shown in FIG. 4A is a diagram showing a state in which the cleaner 2 is being pulled out, and FIG.

The scraper 24 is disposed at a position where the surface of the cleaning member 13 moves while being in live contact with the tip edge of the scraper 24 when the cleaner 2 is pulled out. As shown in FIG. 2B, this scraper 24 has a width dimension that is equal to or larger than the width direction dimension of the cleaning member 13. Then, during the operation of pulling out the cleaner 2 from the housing 1,
By slidingly moving the cleaning member 13 against the tip edge of the creper 24, paper dust and the like adhering to the cleaning member 13 are scraped off and stored in the paper dust receiver 25 below.

It is preferable that the scraper 24 be made of a material that does not damage the cleaning member 13. Furthermore, this third embodiment is also applicable to the device of the second embodiment.

Further, in this embodiment, the regulating piece 5b is provided at the cleaner insertion port as a regulating member, but other configurations may be adopted, and its position is not limited to the cleaner insertion port.

〔Effect of the invention〕

As explained above, according to the present invention, when removing the cleaner from the housing, the cleaner and the conveyance roller are prevented from coming into contact with each other, so that the paper powder does not return to the conveyance roller or damage the surface of the conveyance roller. It becomes possible to easily discharge paper powder etc. attached to the cleaner without causing any problems.

Furthermore, since the cleaning member having a convex shape is provided on the tip side of the cleaner, it is possible to effectively remove paper dust and the like that have returned to the conveyance roller.

Further, since the scraper is disposed so that the cleaning member slides into contact with the cleaning member while the cleaner is being pulled out, adhering paper dust and the like can be effectively removed from the cleaning member.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a conveyance roller paper dust removal device showing a first embodiment of the present invention, in which FIG. 1A is a plan view of the housing, and FIG. ) is a left side view of the above figure (a) showing the state in which the cleaner is installed, FIG. 2 is a detailed perspective view of the cleaner pressing member, and FIG. 3 is a sectional view taken along the line [-n] of FIG. FIG. 4 is a diagram showing a second embodiment of the present invention, in which FIG. (a) shows a state in which the cleaner is installed, FIG. This is a diagram showing a third embodiment of the present invention.
) is a diagram showing the state in the middle of pulling out the cleaner;
) is a diagram showing a part of the 8-arrow view in Figure (a).

Claims (1)

[Claims] 1. Consisting of a housing disposed parallel to the axial direction of the conveyance roller, and a cleaner that is attached to and removed from the housing and faces the surface of the conveyance roller, with the housing inside the housing. a cleaner guide disposed to form a cleaner guide space that becomes narrower in the axial direction; a pressing member that presses the cleaner against the surface of the conveying roller within the housing; A paper dust removal device for a conveying roller, comprising: a regulating member for regulating pulling out, and a cleaning member provided on a surface facing the surface of the conveying roller when the cleaner is installed in the housing. . 2. A convex portion is formed on the conveying roller side at the tip of the cleaning member with respect to the direction of insertion of the cleaner, and the convex portion is in contact with the surface of the conveying roller when the cleaner is pulled out. A paper dust removal device for a conveyance roller according to claim 1. 3. The paper dust removal device for a conveyance roller according to claim 1 or 2, further comprising a scraper disposed at a position where the cleaning member comes into sliding contact when the cleaner is pulled out.