JPH01300272A - Electrifier cleaning tool and cleaning method - Google Patents

Abstract

PURPOSE:To always clean an electrification wire by bringing a cleaning member into contact with the electrification wire at the time of movement in one direction and bringing the cleaning member into no contact with said wire at the time of movement in the other direction. CONSTITUTION:A cleaning member supporting means 1a1 supports a cleaning member 2 so as to movable along an electrification wire 4, and a working member 10 moves its cleaning member 2 so that the cleaning member 2 comes into contact with the electrification wire 4. Also, the working member 10 brings the cleaning member 2 into contact with the electrification wire 4, when the cleaning member is moved in a prescribed direction, and separates the cleaning member 2 from the electrification wire 4 when the cleaning member 2 is moved in the direction opposite to the prescribed position. In such a way, it does not occur that dust and a foreign matter which have adhered to a cleaning member are returned and adhere to the wire which has been cleaned with much trouble, and the wire can be cleaned more cleanly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a charger cleaning tool for cleaning a charger such as a corona charger used in, for example, an electrophotographic copying machine.

[Prior Art] For example, a corona charger used to uniformly charge the photoreceptor of an electrophotographic copying machine usually has a corona wire made of tungsten, platinum, etc. stretched inside a box-shaped shield case. It is set up. When corona discharge occurs, silicon-based gas such as silane contained in the surrounding air layer generates a silicon-based compound on the surface of the corona wire. In addition, paper powder and
Scattered toner sticks to the printer. These deposits significantly reduce the ability of corona discharge from the corona wire.

Therefore, the charging of the photoreceptor by the corona charger becomes non-uniform, causing unevenness in the surface potential of the photoreceptor, resulting in a problem that clear copied images cannot be obtained.

Therefore, a technique for cleaning the corona wire with a cleaning tool has been developed. For example, as known from Japanese Patent Application Publication No. 62-86375, a technique is known in which a cleaning tool is brought into contact with a corona wire and moved back and forth along the wire for cleaning.

[Problems to be Solved by the Invention] However, in such conventional cleaning tools, since cleaning is performed by reciprocating along the wire, for example, on the outward trip, the cleaning member of the cleaning tool removes the wire from the wire. Usually, the removed dust and foreign matter adhere to one side of the cleaning member. Therefore, if the cleaning member is moved while being in contact with the wire on the return trip, there is a drawback that the dust and foreign matter adhering to the cleaning member will be returned to and adhere to the cleaned wire again.

The present invention has been developed in view of the problems of conventional charger cleaning tools,
The purpose of the present invention is to provide a charger cleaning tool that can clean wires more neatly.

[Means for Solving the Problems] The present invention according to claim 1 provides a method of moving a cleaning member forward 1 u along the charging wire in order to clean the charging wire of a charger on which the charging wire is stretched. When the cleaning member is moved in one direction, the cleaning member is brought into contact with the charging wire,
The present invention according to claim 2, characterized in that the above-mentioned object is achieved by not bringing the cleaning member into contact during movement in the other direction, is a cleaning member for cleaning the charging wire of a charger on which the charging wire is stretched. A charging device cleaning tool comprising: cleaning member support means for movably supporting the cleaning member along the charging wire; and moving the cleaning member so that the cleaning member comes into contact with the charging wire. and an action member support means for supporting the action member, and the action member brings the cleaning member into contact with the charging wire when the cleaning member is moved in a predetermined direction, and the action member supports the charging wire. The present invention of claim 3 is characterized in that the above object is achieved by separating the cleaning member from the charging wire when the cleaning member is moved in a direction opposite to the predetermined direction, has a first action part and a second action part provided at a predetermined interval, and is moved by a driving means, and the cleaning member includes a cleaning member and a movable part that moves the cleaning member. a cleaning member frame held in the cleaning member frame, a first action part and a second action part of the action member,
When the cleaning member is moved, the cleaning member of the cleaning member selectively contacts the cleaning member frame ζ, thereby moving the cleaning member frame and reciprocating the cleaning member along the charging wire. Along with moving the
By contacting and separating from the charging wire according to the reciprocating flicker, the above [1] is achieved.

[Function] The present invention as claimed in claim 1.2 provides a charging device cleaning tool having an ILW sweeping rod member for cleaning a charging wire of a charging device on which a charging wire is stretched, wherein the cleaning member supporting means is , said) supporting the scraping member so as to be movable along the charging wire, and the action member being able to move the cleaning member so that the cleaning member comes into contact with the charging wire;
The action member brings the cleaning member into contact with the charging wire when the cleaning member is moved in a predetermined direction;
When the cleaning member is moved in a direction opposite to the predetermined direction, the cleaning member is separated from the charging wire.

Claim 30 The present invention is the present invention according to claim 2, wherein the acting member has a first acting part and a second acting part provided at a predetermined interval, and is moved by a driving means. , the cleaning member includes a cleaning member and a cleaning member frame that movably holds the cleaning member, and the first action part and the second action part of the action member are arranged so that when the action member is moved, the cleaning member is moved. By selectively abutting the cleaning member and the cleaning member frame, the cleaning member frame is moved, and further, the cleaning member is reciprocated along the charging wire, and in accordance with the reciprocating movement, the cleaning member frame is moved. Contact the charging wire, separated by M.

[Examples] The present invention will be described below based on drawings showing examples thereof.

FIG. 1 is a perspective view showing an embodiment of the charging device cleaning tool of the present invention.

In the figure, on the upper surface 1a of the shield case 1, which is an elongated rectangular parallelepiped with an open bottom, there is a long day 3 on which the cleaning member 2 moves.
is drilled. Further, inside the shield case 1, chargers W-t-4, 4, which generate corona discharge and charge the photoreceptor, are installed.

The cleaning member 2 has a cleaning member frame 2 as shown in FIG.
a and a cleaning member 2b. Cleaning member frame 2a
is in the shape of a rectangular parallelepiped, and on both sides of the
al and 2al are drilled. This groove 2 ah2 a
An edge portion 1 ah 1 al forming the long side 3 of the shield case upper surface 1a is slidably inserted into the shield case 1. The edge portion 1al is a specific example of a cleaning member support means that supports the cleaning member 2a so as to be movable along the charging wire 4. In addition, at the front and back positions of the upper surface of this cleaning member frame 2a, there is a U-shaped operated portion 2a2.2.
A3 is erected.

In addition, the cleaning member 2b of the cleaning member 2 is “<
It is fixed to the left and right sides of the lower end 2cl of the ``''-shaped lever 2c, respectively. That is, FIG. 3 is a perspective view showing the state in which the cleaning member 2 is turned upside down and disassembled.
It is removably attached to the tenons protruding from both sides of the l. Thereby, the cleaning member 2b,
If 2b becomes dirty, it can be replaced. That lever 2c
A shaft 2c6 is fixed to the bent portion 2c2 of the shaft 2c.
6, a bearing provided on the lower surface 2a4 of the cleaning member frame 2a is pivotally supported by a portion 2a5.2a5.

Further, as shown in FIG. 2, the upper end 2c3 of the lever 2C protrudes upward from a hole It is. This lever upper end 2c3 has the function of an actuated part on which an acting part to be described later acts.

When the cleaning member 2b is disposed in a charger, the cleaning member 2b is attached so that the charging wire 4 is directly above it.

In FIG. 1, drive wires 5a and 5b are stretched above the upper surface 1a of the shield case.

A spherical part 6 as a first action part of the action member 10 and a spherical part 7 as a second action part are fixed to one of the drive wires 5a at a predetermined interval. The first and second action parts 6.7 and the drive wire part etc. that connect them are
This constitutes an operating member IO.

The first acting part 6 is located between one actuated part 2a2 of the cleaning member frame 2a and the upper end 2c3 of the lever 2c, and the second acting part 7 is located between the lever upper end 2c3 and the remaining part. It is arranged so as to be located between the actuated portion 2a3. Further, the drive wire 5a is connected to the upper end 2 of the lever.
The notch portion 2c4 of c3 and both acted portions 2a2.2
It is arranged so as to pass through the notch part a3.

Said drive wires 5a, 5b are wound around and supported by two pulleys 8.9. Pulley 8 here
．． Reference numeral 9 is a specific example of an action member support means for supporting the action member 10. As shown in FIG. This pulley 8 has pinions 11, 12
It is rotated by a motor 13 serving as a driving means. In addition, the other pulley 9 is connected to the movable plate 14
is supported by Furthermore, the movable plate 14 is supported by a spring 15.
．． 15, it is constantly biased in the direction of arrow A.

This is to absorb loosening of the drive wire 5 and the like.

Next, the operation of the above embodiment will be explained.

First, the driving means 13 moves the driving wire 5a to the fifth
Pull in the direction of arrow C as shown in Figure (b). As a result, the first acting part 6 comes into contact with the acted part 2a2. As a result, the cleaning member 2 moves in the direction C along the charging wire 4. At this time, the second action portion 7 also comes into contact with the upper end 2c3 of the lever 2C. The distance between the first action section 6 and the second action section 7 is determined in advance so that they come into contact with each other in this manner.

Therefore, since the lever 2C rotates counterclockwise, the cleaning member 2b attached to the lower end of the lever 2C contacts the charging wire 4 from below, moves in the direction C in this state, and Clean the wire 4 of any debris. FIG. 5(a) is a plan view of FIG. 5(b).

Next, the driving means 13 moves the driving wire 5a to the fourth
Pull in the direction of arrow B as shown in figure (l). As a result, the second acting portion 7 comes into contact with the acted portion 2a3. As a result, the cleaning member 2 moves in the direction B, and the charging wire 4
move along. At that time, the first action part 7 is
It is not in contact with the upper end 2c3 of the lever 2c. Then, due to the action of the lever 2c's own weight, the cleaning member 2b attached to the lower end of the lever 2c separates from the lower side of the charging wire 4 as shown in the figure, and moves in the direction B in this state. Incidentally, in this case, the lever 2c may be actively rotated clockwise by bringing the first action portion 6 into contact with the upper end 2c3 of the lever 2c. As a result, there is no fear that the dust or foreign matter adhering to the cleaning member 2h will adhere to the charging wire 4 when moving in the B direction as described above. FIG. 4(a) is a plan view of FIG. 4(b).

When cleaning by moving in the C direction again, the dust and foreign matter adhering to the cleaning member 2b will adhere to the side y where the cleaning member 2b is moving, so it will not adhere to the charging wire 4. There's no need to worry about it.

FIG. 6 is a perspective view of the cleaning member 2b in an embodiment in which the cleaning member 2b corresponding to the case where there is only one charging wire 4 is used. In the figure, there is only one cleaning member 2b, and a hole 2c5 is bored at the lower end of the lever 2c, and the charging wire 4 passes through the hole 2c5 for cleaning.

FIG. 7 shows that the open side of the shield case l faces upward;
This is an embodiment in which the cleaning member 2 is provided in a manner opposite to that of the previously described embodiment. In this embodiment, when the cleaning member 2 is moved in the E direction as shown in FIG. Cleaning is performed by moving the cleaning member frame 2 in the E direction while making contact with the cleaning member frame 2. Further, as shown in FIG. 8, when moving the cleaning member 2 in the D direction, the first acting part 6 and the second acting part 7 act together to lift the lever 2c -E. In addition, the shape, weight, and shaft 2c6 of the lever 2C
By adjusting the position of , it is possible to realize contact and separation without necessarily having both acting parts act.

FIG. 14 is a front view centered on the pulley 8 on the drive means 13 side of the embodiment.

As shown in the figure, the pulley 8 supported on one side has a
The ear 5 is wound more than once. A wire portion 5a extending from the supported side portion 8a of the support of the pulley 8
1 is connected to the object to be pulled, which has a larger resistance force such as frictional force than the wire portion 5bl coming out from the unsupported support portion 8h.

This makes it possible to reduce the force exerted by the object trying to topple the pulley 8 supported on one side.

10 to 13 are drawings showing another embodiment of the present invention.

Hollow end blocks 120a and 120h are fitted into each longitudinal end of the shield case l. One end of a tension spring 130 is locked in one end block 12Oa, and one end of the charging wire 4 is locked to the other end of the tension spring 130. The charging wire 4 extends from the end block 120a, extends in the longitudinal direction inside the shield case 1, and is locked in the other end block 120b with, for example, a screw so as not to expand or contract. .

A long hole 110a for cleaning is provided on the upper surface of the shield case 1 along an area above the charging wire 4. The long hole 110a passes above one end block 120b and reaches the side edge of the upper surface of the shield case 110.

The cleaning member 200 in this embodiment includes a pair of cleaning members 21O1210 that can come into sliding contact with the charging wire 4;
It includes a pair of cleaning member holders 220, 220 that support each cleaning member 210, 21O, and a slide plate 230 that moves each holder 220 along the charging wire 4. This slide plate 230 is a specific example of a driving means. Further, in this embodiment, the action member 10 is an engagement member 240 that can engage with the end of the holding body 220, and the slide plate 230 disposed above the shield case l is
An engagement protrusion 230a that protrudes downward and a long hole 11 at the tip.
Locking parts 230h and 230b that lock on the upper surface of each side edge of 0a
is formed, and the engaging protrusion 230a is slidably engaged with the elongated hole 11Oa on the upper surface of the shield case 110.

The upper surface of each side edge of the elongated hole 110a is a specific example of cleaning member supporting means. The slide plate 230 has an engaging protrusion 2 at the tip.
An engagement groove is formed over a predetermined length from 30a.

A pair of cleaning member holding bodies 220, 220 are attached to the lower surface of the engaging protrusion 230a.

Each holding body 220 is disposed along the charging wire 4 and has a bent central portion so that each end is located on one side of the charging wire 4. The bent portion at the center of each holding body 220 is rotatably attached to the engaging protrusion 230a in a vertically overlapping state. Therefore,
When one end of each clamping body 220 is brought close to (or separated from) each other, the other ends are moved away from (or brought close to) each other.

Opposing side surfaces of each clamping body 220 are cut to engage with each other.

The side of each clamping body 220 opposite to the end on which the tension spring 130 is disposed extends downward, the lower end thereof is located on each side of the charging wire 4, and the cleaning member 210. 210 are attached to each. As shown in FIG. 13, each of the cleaning members 210, 210 comes into contact with the charging wire 4 by separating the end portions of each clamping body 220 on the side where the tension spring 130 is provided, so that both cleaning members The charging wire 4 is held between the wires 210 and 210.

An engaging member 240 is disposed above the charging wire 4 inside the shield case l. The engagement member 240 is
A connecting rod 240a disposed above the charging wire 4 and parallel to the charging wire 4;
Engagement operation section 2 attached to each end of 40a
40b, 240C and each engagement operation section 240b, 240c
Locking portions 240d and 240e extending upward from
The locking portions 240d and 240e are slidably locked to a long side 110a formed on the upper surface of the shield case l, and the engagement operation portions 240b and 240c and the connecting rod 240a are It is suspended by stop portions 240d and 240e. The upper surface of this shield case 1 is a specific example of the working member supporting means. The locking portion 240d located on the side where the tension spring 130 is disposed is located within the engagement groove of the slide plate 230.

The engagement operation parts 240b and 240c are connected to the connecting rod 240a.
It has a trapezoidal shape in plan view, with the length in the direction perpendicular to the charging wire 4 becoming shorter in the direction.

The engagement operation portion 240b engages between one end of the holding body 220 to widen the gap between the ends. As a result, the distance between the other ends of the holding body 220 is reduced.

The other engagement operation section 240C also has a similar effect.

Engagement operation section 240 located on the side where tension spring 130 is provided
b engages between the ends of the clamping body 220, the clamping body 22
Each cleaning member 210 disposed at the other end of 0
．． 210 approach each other and sandwich the charging wire 4. When the other engaging operation part 240c engages between the ends of each clamping body 220, the cleaning members 210, 210 are separated from each other and separated from the charging wire 4.

Next, the operation of the above embodiment will be explained.

The slide plate 230 is pushed out in the opposite direction to the tension spring arrangement side. Due to the pushing out, each clamping body 220 moves in the opposite direction to the pushing direction of the tension spring 230, and each clamping body 220 moves to the engagement operation portion 240C disposed in the opposite direction to the tension spring 130 disposed side of the engagement member 240. The moving direction side ends of the holding body 220 are engaged. As a result, the ends of each holding body 220 are separated from each other, and the cleaning members 210 and 210 attached to each end thereof are separated by the charging wire 4.

In this state, the slide plate 230 is further pushed out. Each cleaning member 210, 210 moves without contacting the charging wire 4, as shown in FIG. Each holding body 220 is located at an end of the charging wire 4 on the side opposite to the end above the tension spring. In this state, a voltage is applied to the charging wire 4 to cause corona discharge.

Next, when cleaning, the slide plate 230 is indexed toward the side where the tension spring 130 is provided. As a result, each clamping body 220 moves in the index direction of the tension spring 130,
The engagement operation section 240b engages between the end portions in the moving direction. Due to the engagement operation portion 240b, the end portions of the holding body 220 on the side where the tension spring 130 is disposed are spaced apart from each other by M, and the other end portions are brought closer to each other.

As a result, the cleaning members 210, 210 attached to the mutually approaching ends come into contact with the charging wire 4, as shown in FIG.
The charging wire 4 is held between the 0.210 and 0.210.

In this state, the slide plate 230 is further moved in the index direction of the tension spring 130, and both cleaning members 21
0.210 slides into contact with the charging wire 4 while holding the charging wire 4, and removes foreign substances such as silicon compounds adhering to the charging wire 4.

When the slide plate 230 is moved until it comes into contact with the end block 120a of the charging wire 4 on the side where the tension spring is provided, it is then pushed out to the opposite side. As described above, the cleaning member 210 is moved to the opposite side without contacting the charging wire 4 and is prepared for corona discharge.

[Effects of the Invention] As is clear from the above description, when the cleaning member is reciprocated along the charging wire, the cleaning member is brought into contact with the charging wire during movement in one direction, and the cleaning member is brought into contact with the charging wire in the other direction. Since the cleaning member can be prevented from coming into contact with each other during movement in the direction, the charging wire can always be cleanly cleaned no matter how many times the cleaning member is reciprocated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a charger incorporating an embodiment of the charger cleaning tool according to the present invention, FIG. 2 is a perspective view of a cleaning member of the same embodiment, and FIG. 3 is a perspective view of the cleaning member of the same embodiment. f? J S7 exploded perspective view, FIG. 4(a) is a plan view of the cleaning member for explaining the operation of the same embodiment, FIG. 4(b) is a front view of the same cleaning member, FIG. 5(a) ) is a plan view of the cleaning member for explaining the operation of the same embodiment, FIG. 5(b) is a front view of the same cleaning member, and FIG. 6 is a diagram of another embodiment of the same charging device cleaning tool. FIG. 7 is a perspective view of a charger incorporating another embodiment of the charger cleaning tool of the present invention, and FIG. 8 is a perspective view of the cleaning member for explaining the operation of the same embodiment. The front view, Figure 9, is
FIG. 10 is a front view of the cleaning member for explaining the operation of the same embodiment, FIG. 10 is a perspective view of a charger incorporating another embodiment of the charger cleaning section of the present invention, and FIG. 11 is the same embodiment. FIG. 12 is a partial front view of the cleaning member of the same embodiment, and FIG. 13 is a plan view of the cleaning member of the same embodiment.
14 is a plan view of the cleaning member of the same embodiment, and FIG. 14 is a front view of the boob of the charger of the present invention. l...Shield case 1a...Cleaning member support means 2...Cleaning member 2a...Cleaning member frame 2b.
...Cleaning member 4...Charging wire 5...Drive wire 6...First action part 7...Second action part 8.9...Working member support means 10...Working member

Claims (3)

[Claims] (1) When moving the cleaning member back and forth along the charging wire in order to clean the charging wire of the charger on which the charging wire is stretched, the cleaning member is moved in one direction to clean the charging wire of the charging device. A method for cleaning a charger, characterized in that the cleaning member is brought into contact with a wire and not brought into contact during movement in the other direction. (2) In a charging device cleaning tool equipped with a cleaning member for cleaning the charging wire of a charging device on which a charging wire is stretched, the cleaning member is supported so as to be movable along the charging wire. A cleaning member support means, an action member capable of moving the cleaning member so that the cleaning member comes into contact with the charging wire, and an action member support means for supporting the action member, the action member comprising: Bringing the cleaning member into contact with the charging wire when the cleaning member is moved in a predetermined direction, and separating the cleaning member from the charging wire when the cleaning member is moved in a direction opposite to the predetermined direction. A charger cleaning tool featuring: (3) The action member has a first action part and a second action part provided at a predetermined interval, and is driven by a driving means.
The cleaning member is movable, and the cleaning member includes a cleaning member and a cleaning member frame that movably holds the cleaning member, and the first action portion and the second action portion of the action member are movable. At this time, by selectively abutting the cleaning member of the cleaning member and the cleaning member frame, the cleaning member frame is moved, and further, the cleaning member is reciprocated along the charging wire, and the reciprocation is The charger cleaning tool according to claim 1, wherein the charger cleaning tool contacts and separates from the charging wire as it moves.