JP2001166653A - Image forming material removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a complicated control mechanism for a separating claw member and to avoid damage to the top surface of a peeling roll. SOLUTION: This image forming material removing device 10 peels off an image forming material 21 from a recording medium 2 by pressing the recording medium 2 on the peeling roll 1 by a press-contact member 3 and sticks it on the peeling roll 1. Here, a gap 42 is formed between the peeling roll 1 and an abutting part 41 of a separating claw member 4 which is arranged in a freely swingable state opposite the peeling roll 1 and energized toward the peeling roll 1 to separate the recording medium 2 from the peeling roll 1 by forming projection parts 5 at both the width-directional ends of the abutting part 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium on a peeling roll, which is pressed against a recording medium by a pressure contact member to peel off the image forming material from the recording medium and adhere to the peeling roll. The present invention relates to an image forming material removing apparatus provided with a separation claw member for separating the image forming material.

[0002]

2. Description of the Related Art A conventional image forming substance removing apparatus (Japanese Unexamined Patent Publication No.
114310), the separation claw T swinging around the rotation axis facing the peeling roller H contacting the backup roll B as shown in FIG. Biased by the biasing force of
When the toner removing process of the peeling roller H is performed and the toner removing process of the peeling roller H is not performed, the separation claw T is oscillated in a direction away from the peeling roller H by a solenoid SL.

[0003]

In the above-mentioned conventional image forming substance removing apparatus, the separating member T is brought into contact with the peeling roller H by the spring member S to perform the toner removing process of the peeling roller H. In addition, it does not separate the recording medium such as paper, and swings the separation claw T in a direction away from the separation roller H by a solenoid SL when the toner removal processing of the separation roller H is not performed. Therefore, there is a problem that a complicated control mechanism is required.

Accordingly, the present inventor has proposed an image forming material removing apparatus in which the image forming material is peeled off from the recording medium by pressing the recording medium on the peeling roll by a pressure contact member and adhered to the peeling roll. The separation claw member, which is arranged to be swingable in opposition to the separation roll, is urged in a direction approaching the separation roll, and separates the recording medium from the separation roll. Focusing on the technical idea of the present invention of forming and forming a gap between the peeling roll and the contact portion of the separation claw member, as a result of further research and development, a complicated control mechanism in the related art The present invention has achieved the object of eliminating the necessity of the above and avoiding damaging the surface of the peeling roll.

[0005]

According to a first aspect of the present invention, there is provided an image forming material removing apparatus, wherein a recording medium on a peeling roll is pressed against the recording medium by pressing the recording medium with the pressing member. In the image forming material removing apparatus for peeling the forming material and attaching the peeling roll to the peeling roll, the peeling roll is disposed so as to be swingably opposed to the peeling roll, and is urged in a direction approaching the peeling roll. A protrusion is formed at a contact portion of the separation claw member for separating the recording medium with the peeling roll, and a gap is formed between the separation roll and the contact portion of the separation claw member.

[0006] In the image forming material removing apparatus according to the present invention (a second invention according to a second aspect), in the first invention, the convex portion is provided at both ends in the width direction of the contact portion of the separation claw member. It is arranged.

In the image forming material removing apparatus according to the present invention (third aspect of the present invention), in the second aspect, a reaction force acting on the convex portion when the separation claw member is difficult to separate from the peeling roll. Thus, a moment in a direction away from the peeling roll acts on the separation claw member.

[0008]

According to the first aspect of the present invention, the image forming material removing apparatus according to the first aspect of the present invention peels off the image forming material from the recording medium by pressing the recording medium on the separating roll with a pressing member. A separating claw member that is swingably disposed to face the peeling roll, is urged in a direction approaching the peeling roll, and separates the recording medium from the peeling roll. A convex portion is formed at the contact portion with the peeling roll, and a gap is formed between the peeling roll and the contact portion of the separation claw member, so that a complicated control mechanism in the related art is unnecessary. In addition, there is an effect that damage to the surface of the peeling roll is avoided.

In the image forming material removing apparatus according to the second aspect of the present invention, the projections are disposed at both ends in the width direction of the contact portion of the separation claw member in the first aspect. Thus, the posture of the separation claw member is stable, and an effect of enabling stable separation of the recording medium is achieved.

The image forming material removing apparatus according to a third aspect of the present invention is the image forming material removing apparatus according to the second aspect, wherein the separation claw member is formed by a reaction force acting on the convex portion when the separation claw member is difficult to peel. Since a moment in the direction away from the peeling roll acts on the separating claw member, the separating claw member itself has an effect of preventing the separation claw member from being hardened.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 and 2, the image forming material removing apparatus according to the first embodiment presses a recording medium 2 on a peeling roll 1 with a pressing member 3 to press the recording medium 2 thereon. From the recording medium 2 to the image forming material 21
In the image forming material removing apparatus 10 for peeling off and adhering to the peeling roll 1, the peeling roll is disposed so as to be swingable in opposition to the peeling roll 1 and urged in a direction approaching the peeling roll 1. Abutment portion 41 of separation claw member 4 for separating recording medium 2 from separation roll 1 from separation roll 1
The protrusions 5 are formed at both ends in the width direction of the peeling roll 1.
A gap 42 is formed between the separation claw member 4 and the contact portion 41.

As shown in FIGS. 1 and 2, the image forming material removing apparatus 10 according to the first embodiment has a pair of frames (not shown) arranged opposite to each other at a predetermined interval. By press-contacting a rotatable release roll 1 and a sheet as a recording medium 2 on the release roll 1, toner and other image forming materials 21 are separated from the recording medium and adhered to the release roll 1. And a pressure contact member 3 rotatably supported by the frame.

As shown in FIGS. 1 and 2, the separating claw member 4 is constituted by a member 40 having a substantially U-shape and a substantially J-shaped cross section, and both ends are fixed to the frame at one end. An eyeball portion 44 in which the fixed shaft 43 is inserted is formed, and a claw portion 45 protruding in a direction approaching the peeling roll 1 is formed at the other end, and is swingably arranged facing the peeling roll 1. Has been established.

The fixed shaft 43 has one end locked to the separation claw member 4 and the other end locked to two spring members 46 locked to one end of the paver guide. Is biased in a direction approaching the peeling roll, and the convex portion 5 is lightly pressed against the surface of the peeling roll 1 in a natural state.

A small hemispherical protrusion is formed as the convex portion 5 at both ends in the width direction of the contact portion 41 formed by the inclined surface of the claw portion 45 of the separation claw member 4. The gap 42 of, for example, 0.7 mm is formed between the outer peripheral surface of the separation claw member 4 and the contact portion 41 of the separation claw member 4.

As shown in FIG. 2, the separation claw member 4 is attached to the separation claw member 4 by the reaction force acting on the convex portion 5 when the outer peripheral surface 11 of the separation roll 1 is hardened. It is configured such that a moment in the direction away from the center acts.

That is, as shown in FIG. 2, the left end is swingably locked to the fixed shaft 43 and is urged to swing counterclockwise (indicated by an arrow in FIG. 2) by the spring member 46. A line of action (indicated by a broken arrow in FIG. 2) of a reaction force (indicated by an arrow in FIG. 2) acting on the convex portion 5 when the outer peripheral surface 11 of the peeling roll 1 is hardened into the separation claw member 4. ) Is the separation claw member 4 on the right side of the fixed shaft 43.
, A moment is generated to swing the separation claw member 4 clockwise with respect to the fixed shaft 43.

As shown in FIG. 2, the recording medium 2 separated from the peeling roll 1 by the separating claw member 4
And a paper guide 6 for guiding the paper.

As shown in FIGS. 1 and 2, the image forming material removing apparatus 10 according to the first embodiment having the above-described configuration has a pair of frames (not shown) arranged to face each other at a predetermined interval. ) By pressing the paper as the recording medium 2 on the separation roll 1 whose both ends are rotatably supported by the pressing member 3, thereby separating the toner and the other image forming material 21 from the recording medium 2. The film is adhered to the peeling roll 1.

The separation claw member 4, which is slidably disposed facing the peeling roll 1 and is urged in a direction approaching the peeling roll 1, moves the image forming material 21 from the peeling roll 1. The separated recording medium 2 is separated and supplied through the paper guide 6.

At this time, convex portions 5 are formed on the separation claw member 4 at both ends in the width direction of the contact portion 41 with the peeling roll 1, and the contact portions of the separation roll 1 and the separation claw member 4 are formed. Since the gap 42 is formed between the contact portion 41 and the separation claw member 4, the separation claw member 4 comes into contact with the toner layer, which is an image separation area of the separation roll 1, only through the two protrusions 5. This is to avoid damaging the toner layer on the surface of the release roll 1.

As shown in FIGS. 1 and 2, the separating claw member 4 is constituted by a member 40 having a substantially U-shape and a substantially J-shaped cross section, and both ends are fixed to the frame at one end. An eyeball portion 44 in which the fixed shaft 43 is inserted is formed, and a claw portion 45 protruding in a direction approaching the peeling roll 1 is formed at the other end, and is swingably arranged facing the peeling roll 1. Has been established.

That is, the separation claw member 4 is provided by two spring members 46 each having the fixed shaft 43 interposed, one end locked to the separation claw member 4 and the other end locked to one end of the paver guide. The separation claw member 4 is urged in a counterclockwise direction approaching the peeling roll.

A small hemispherical projection is formed as the convex part 5 at both ends in the width direction of the contact part 41 formed by the inclined surface of the claw part 45 of the separation claw member 4.
Even if the separation claw member 4 is urged in the counterclockwise direction to approach the peeling roll by the spring member 46 and the small hemispherical projection as the convex portion 5 abuts on the peeling roll 1, 1 and the separating claw member 4
The gap 42 is formed between the contact portion 41 and the contact portion 41.

As shown in FIG. 2, when the separation claw member 4 is recessed into the outer peripheral surface 11 of the separation roll 1, the separation claw member 4 is separated from the separation claw member 4 by a reaction force acting on the projection 5. The moment acting in the direction away from the roll 1 acts.

That is, as shown in FIG. 2, the left end is swingably locked to the fixed shaft 43 and is urged by the spring member 46 to swing counterclockwise (indicated by an arrow in FIG. 2). A line of action (indicated by an arrow in FIG. 2) of a reaction force (indicated by an arrow in FIG. 2) acting on the convex portion 5 when the outer peripheral surface 11 of the peeling roll 1 is hardly recessed into the separation claw member 4 is: By acting on the separation claw member 4 on the right side of the fixed shaft 43, a moment is generated to swing the separation claw member 4 clockwise relative to the fixed shaft 43. The biting is canceled.

The image forming material removing apparatus according to the first embodiment having the above-described operation is provided so as to be swingable in opposition to the peeling roll 1, and is urged in a direction approaching the peeling roll 1, and The contact portion 4 of the separation claw member 4 for separating the recording medium 2 from the roll 1 with the separation roll 1
1 to form a gap between the peeling roll 1 and the abutting portion 41 of the separating claw member 4, so that a complicated control mechanism in the related art becomes unnecessary and This has the effect of avoiding damaging the surface of the peeling roll.

That is, in the image forming material removing apparatus of the first embodiment, the separating claw member 4 removes the paper as the recording medium 2 wound around the peeling roll 1 whose surface is in a molten state of a resin. This has the effect of separating from 1.

When the contact portion 41 of the separation claw member 4 is constantly brought into contact with the peeling roll 1, the contact portion 41 at the tip end of the separation claw member 4 is connected to the separation roll 1 as in the above-described conventional apparatus. The molten resin layer (toner layer) on the surface of the substrate. Further, when the device is cooled, the separation claw member 4
Then, the resin layer on the surface of the peeling roll adheres, and the separation claw member 4 or the resin layer on the surface of the peeling roll is damaged immediately after the operation of the apparatus.

Therefore, in the first embodiment, as a countermeasure, the convex portion 5 is provided on the contact portion 41 of the separation claw member 4, and the convex portion 5 and the peeling roll 1 are brought into contact with each other.
A gap (0.7 mm) can be secured between the contact portion 41 at the tip of the separation claw member 4 and the peeling roll 1.

Further, the separating claw member 4 has a structure capable of swinging with the axis of the fixed shaft 43 as a fulcrum, and a spring is disposed on the separating claw member 4 so that the projection 5 of the separating claw member 4 is Since the pressure is lightly pressed against the peeling roll 1 in a natural state, when a load more than necessary is generated, the position of the swing center of the separation claw member 4 and the disposition posture of the separation claw member 4 are set to Since the separation claw member 4 is disposed at a position where the separation claw member 4 rotates in a direction away from the peeling roll 1, the separation claw member 4 escapes to avoid breakage.

When an unnecessarily large load occurs, the separation claw member 4 escapes to prevent breakage, and the separation claw member 4
Is separated from the peeling roll 1, the separating claw member 4 is brought into contact again. That is, when the separation claw member 4 is separated from the separation roll 1, the convex portion 5 of the separation claw member 4 is lightly pressed against the separation roll 1 again by the urging action of the spring 46.

Further, in the image forming material removing apparatus according to the first embodiment, the convex portion 5 is provided in the contact portion 41 of the separation claw member 4.
Are arranged at both ends in the width direction, the posture of the separation claw member 4 is stable, and the recording medium 2 can be stably separated.

Further, in the image forming material removing apparatus of the first embodiment, the separation claw member 4 is attached to the separation claw member 4 by a reaction force acting on the convex portion 5 when the separation claw member 4 is hardened. Since the moment acting in the direction away from 1 acts, the separating claw member 4 itself has a function of avoiding penetration into the separation roll member 1, thereby providing an effect of preventing the separation claw member 4 from penetrating into the peeling roll 1.

(Second Embodiment) As shown in FIG. 3, the image forming material removing apparatus of the second embodiment
Is wider than the image peeling area 12 of the peeling roll 1, and the protrusions 5 protruding from both ends in the width direction of the contact portion 41 of the separation claw member 4 are attached to the image peeling area 1 of the peeling roll 1.
The point of contact with the outer surface 11 of the second embodiment is a difference from the first embodiment, and the following description will focus on the difference.

In the image forming material removing apparatus according to the second embodiment, the protrusions 5 projecting from both ends in the width direction of the abutting portion 41 of the separation claw member 4 are provided in the image peeling area of the peeling roll 1. In this embodiment, the outer surface 12 is in contact with the outer surface 11 and is not in contact with the image peeling region 12.

In the image forming material removing apparatus according to the second embodiment, since the projections 5 do not come into contact with the image peeling area 12, the image peeling area 12 on the surface 11 of the peeling roll 1 is removed. This has the effect of eliminating any possibility of damaging the toner layer.

The above-described embodiments have been described by way of example only, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an image forming material removing apparatus according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged side view showing a main part of the image forming material removing apparatus of the first embodiment.

FIG. 3 is a perspective view illustrating a main part of an image forming material removing apparatus according to a second embodiment of the present invention.

FIG. 4 is a side view showing a conventional image forming substance removing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Peeling roll 2 Recording medium 3 Pressure contact member 4 Separation claw member 5 Convex part 10 Image forming material removing device 21 Image forming material 41 Contact part 42 Gap

Claims (3)

[Claims] 1. An image forming material removing apparatus which peels off the image forming material from the recording medium by pressing a recording medium on a peeling roll by a pressure contact member and attaches the image forming material to the peeling roll. Arranged swingably, urged in the direction approaching the peeling roll, forming a convex portion in the contact portion with the peeling roll of the separation claw member to separate the recording medium from the peeling roll, An image forming material removing apparatus, wherein a gap is formed between the peeling roll and the contact portion of the separation claw member. 2. The image forming material removing apparatus according to claim 1, wherein the protrusions are provided at both ends in a width direction of the contact portion of the separation claw member. 3. The separation claw member according to claim 2, wherein a moment in a direction away from the separation roll acts on the separation claw member by a reaction force acting on the convex portion when the separation claw member is recessed into the separation roll. An image forming material removing apparatus, comprising: