JPH02168595A - Device for discharge of static electricity - Google Patents

Abstract

PURPOSE:To maintain static electricity discharge capability so as to prevent the missing or disconnecting of a conductive fiber due to the contact of a charged body by arranging the fiber horizontally on the side of the lower end of an elastic sheet member, with its surface exposed by a bonding agent for the support, and by earthing the fiber. CONSTITUTION:A conductive fiber 1 is piled in plural number horizontally, and the fiber 1 is exposed and fixed by a bonding agent 3 on a soft insulating sheet member 2. Namely, the fiber 1 is bonded on the rear side of the sheet member 2, and is earthed by an earth line 4. It is mounted on a required part through a bonding part 5 that is provided by sticking a both-sided bonding tape that is provided on the upper end of the sheet member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a static eliminator that removes static electricity from a charged body using air ions generated by self-discharge.

(Prior Art) Conventionally, a static eliminator that removes static electricity from a charged object is used by being attached to an electrostatic copying machine, facsimile machine, etc. For example, as shown in FIG. It is known that a plurality of conductive fibers are held perpendicularly to a charged body X and grounded via a conductive wire C extending from the conductor a. The static eliminator moves a charged body X in contact with or close to a conductive fiber, and uses the electrostatic energy of the charged body X to generate air ions, and connects the electric field from the charged body X to the ground. The electric field ionizes the air and generates air ions. The air ions neutralize the charge on the charged body X.

This type of static eliminator is said to be effective because the cut ends d of the conductive fibers face the charged body X, and the electric field concentrates on the cut ends d, facilitating self-discharge by so-called tip discharge.

In addition, the conductive fibers of the static eliminator are held in the vertical direction by the conductor a, and when the conductive fibers come into contact with the charged body X, they bend freely to change the shape of the charged body It is possible to eliminate static electricity evenly.

However, the conductive fibers have the disadvantage that when the charged body X comes into contact with the conductive fibers during static elimination and the conductive fibers are bent, the conductive fibers may come off or be cut.

In addition, since the bundle of conductive fibers must be held on the conductor a in the vertical direction, it is difficult to securely fix the bundle to the conductor a, and therefore, when removing the conductive fibers, it is difficult to prevent them from falling off. I can't. When the static eliminator is attached to an electrostatic copying machine, a facsimile machine, etc., the conductive fibers that fall off may cause problems such as staining of images and malfunction of semiconductor components.

(Problems to be Solved by the Invention) The present invention eliminates the above-mentioned disadvantages and maintains the conventional performance of easily self-discharging and removing static electricity in accordance with the shape of the charged body.
To provide a static eliminator with a simple structure in which conductive fibers do not come off or break even when a charged body comes into contact with them.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention includes a method in which a plurality of conductive fibers are arranged horizontally on the side surface of the lower edge of a flexible sheet member made of an insulating material, and an adhesive is applied. It is characterized in that the surface of the conductive fiber is exposed and supported, and the conductive fiber is grounded.

Further, the conductive fiber is bonded to the back side of the sheet member with respect to the traveling direction of the charged body during static neutralization.

Further, the sheet member is characterized in that a plurality of cuts are provided in the lower edge of the sheet member in the longitudinal direction.

Further, the electroconductive fiber is characterized in that the side facing the charged body is exposed and covered with a sheet member having the same properties as the sheet member.

(Function) The static eliminator of the present invention removes static electricity by bringing a charged body close to or in contact with the lower edge of the sheet member and moving the charged body horizontally.

The outer peripheral surface of the conductive fiber, not the cut end, faces the charged body, and the diameter of the fiber is 10. Microscopically, the outer peripheral surface has a complicated rough surface shape. Therefore, by exposing the conductive fibers, the countless prongs on the outer circumferential surface serve as discharge starting points, making it possible to generate a discharge equivalent to the discharge caused by the tip of the cut end of the conductive fibers.

When the sheet member comes into contact with a charged body, it is bent by the external force and suppresses the external force from being applied to the conductive fibers.

Since the conductive fibers are arranged and fixed in the horizontal direction, they are not subjected to external force due to deflection of the sheet member.

Furthermore, the conductive fibers are adhered to the back side of the sheet member in the direction of movement of the charged body, thereby making it possible to prevent direct contact with the charged body.

Furthermore, the cuts are formed by forming a plurality of fine strips on the lower edge of the sheet member, so that when the surface of the charged body has minute irregularities, even if it comes into contact with the sheet member, it conducts the external force generated at that time. It is absorbed without being transmitted to the sexual fibers.

Furthermore, the conductive fibers are coated to protect them from contact and to ensure adhesive fixation.

(Example) An example of implementation of the present invention will be described based on the drawings.

As shown in the first diagram, the static eliminator A has a diameter of -10.
A plurality of conductive fibers 1 of approximately m length are bundled in rows and fixed to a sheet member 2 such as a flexible insulating plastic film with an adhesive 3 with the conductive fibers 1 exposed. The conductive fibers 1 are bonded to the back side of the sheet member 2 in the direction of movement of the charged body X, as shown in the second figure. Further, the conductive fiber 1 is grounded via a ground wire 4.

The static eliminator A having the above configuration is attached to an electrostatic copying machine, facsimile machine, etc. (not shown) at a necessary location using an adhesive part 5 provided by pasting double-sided adhesive tape or the like provided on the upper edge of the sheet member 2. It will be done.

During static elimination, the charged body X moves horizontally in one direction immediately below the static eliminating device A, as shown in FIG.

By grounding the conductive fibers 1 via a grounding wire 4, the electric field from the charged body X is collected on the conductive fibers 1 to cause self-discharge, and the discharge ionizes the air to generate air ions. The air ions neutralize the charge on the charged body X. As shown in the second figure, the conductive fiber 1 has its outer peripheral surface facing the charged body Microscopically, the surface is complex and rough. Therefore, by exposing the conductive fibers 1, the countless prongs on the outer peripheral surface of the fibers become discharge starting points, and self-discharge occurs. At this time, as shown in Table 1, the static elimination effect of the static elimination device of this embodiment is equivalent to that of the conventional device described above.

Table 1 Also, when the charged body X contacts the sheet member 2 and an external force is applied to the sheet member 2, the entire sheet member 2 bends to absorb the external force and is held by the sheet member 2. Almost no external force is transmitted to the conductive fibers l. This prevents the charged body X from coming into direct contact with the conductive fibers 1, allowing for static elimination.

Furthermore, if the static eliminator A of this embodiment is attached to an electrostatic copying machine, facsimile, etc. (not shown) on a metal surface that is already grounded, as shown in FIG.
A conductive portion 6 may be provided using a conductive double-sided adhesive tape or the like and directly adhered to the metal surface to ground the conductive fibers 1.

Further, in the static eliminator A of this embodiment, as shown in FIG. 4, a plurality of cuts 7 may be provided in the longitudinal direction from the lower edge of the sheet member 2 to the conductive fibers l. The cut 7 is such that when there is a minute convex part on the surface of the charged body This prevents the electrically conductive fibers from reaching the electrically conductive fibers, and also allows the electrically conductive fibers l to approach the charged body X more closely.

Further, in the static eliminator A of this embodiment, as shown in FIGS. 5 and 6, the conductive fibers 1 may be covered with a sheet member 8 having the same properties as the sheet member 2. At this time, only the side of the conductive fiber 1 facing the charged body X is exposed.

Further, both sheet members 2.8 are adhered via a conductive part 9 such as conductive double-sided adhesive tape or conductive paint, and at the same time, the conductive fibers 1 are adhered by the conductive part 9.
It is held between both sheet members 2.8. The conductive portion 9 is connected to an adhesive portion 10 such as a conductive double-sided adhesive tape provided on the upper end of the sheet member 2, and is attached to an attachment point for an electrostatic copying machine, facsimile machine, etc. (not shown).
If it is a metal surface that is already grounded, it can be attached to it to ground it.

(Effects of the Invention) As is clear from the above, according to the static eliminator of the present invention, conductive fibers are arranged horizontally on a flexible sheet member, and the same static neutralizing effect as that of the conventional device can be achieved. At the same time, the conductive fibers are reinforced by the sheet member to prevent the conductive fibers from falling off or being cut due to external force upon contact with a charged body. Furthermore, by adhering the conductive fibers to the back side of the sheet member in the direction of movement of the charged body, static elimination can be performed without the charged body coming into direct contact with the conductive fibers, so that the conductive fibers can be removed. can prevent falling or cutting.

Furthermore, by providing a plurality of cuts in the longitudinal direction on the lower edge of the sheet member, even if there are small uneven portions on the surface of the charged body, the electrically conductive fibers are bent at the cuts and external force is not transmitted to the conductive fibers. can be prevented. Further, by covering the conductive fibers with the sheet member, there is no risk of contact with the conductive fibers, so that the conductive fibers can be prevented from falling off or being cut.

Furthermore, since the conductive fibers are simply fixed to the sheet member, the static eliminator of the present invention can be easily manufactured.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
3 is a side view showing another embodiment of the present invention, 4th is a side view showing another embodiment of the present invention,
FIG. 5 is a side view showing another embodiment of the present invention, FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 5, and FIG. 7 is a side view showing a conventional static eliminator. A... Static eliminator, 1... Conductive fiber, 2... Sheet member, 3... Adhesive material, 4... Ground wire, 7... Cut, X... Charged object.

Claims (1)

[Claims] 1. A plurality of conductive fibers are arranged horizontally on the side surface of the lower edge of a flexible sheet member made of an insulating material, and the surface of the conductive fibers is exposed with an adhesive. A static eliminator 2 characterized in that the conductive fibers are supported and grounded, and the conductive fibers are adhered to the back side of the sheet member with respect to the traveling direction of the charged body during static neutralization. A static eliminator 3 according to claim 1, characterized in that a plurality of cuts are provided in the lower edge of the sheet member in the vertical direction, a static eliminator 4 according to claim 1, in which the side of the conductive fiber facing the charged body is exposed. The static eliminator according to claim 1, wherein the static eliminator is covered with a sheet member having the same properties as the sheet member.