JPH10260606A - Fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the exchange of a peeling pawl and to improve attachment precision by dividing a means for supporting the peeling pawl only by attaching/detaching a fixing means. SOLUTION: A peeling pawl unit 10 is installed over a lower peeling pawl 8, a paper ejection guide 7 and the upper part of a paper ejecting roller 11, and the unit 10 is constituted of a paper ejection roller 12, the peeling pawl 13 constituting a peeling means, an upper paper ejection guide 14 as a 1st split body, a peeling pawl supporting frame 15 as a 2nd split body constituting the supporting means together with the upper paper ejection guide 14, a fixing jig 16 constituting a fixing means, an arm 17 and a cover 18, etc. In this case, the pawl tip part 13a of the peeling pawl 13 is always interposed between a heat roller 2 and a copying paper so as to peel the copying paper from the heat roller 2. Besides, one shaft 22 is stuck into each peeling pawl 13, so that the pawl tip parts 13a of the peeling pawls separately come into contact with the heat roller 2 with nearly the same phase. Thus, the peeling function of each peeling pawl 13 is kept nearly the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, for example, a fixing device provided in an electronic copying machine.

[0002]

2. Description of the Related Art An electronic copying machine as an image forming apparatus is provided with a fixing device. In this fixing device, a heat roller and a press roller are in rolling contact with each other, and a copy sheet on which a developer image is formed is sandwiched and transported therebetween.
At this time, the developer image on the copy paper is fixed to the copy paper by receiving heat radiation from the heat roller and pressure from the press roller.

The copy paper on which the fixed image has been obtained is carried out from the position where the heat roller and the press roller are in contact with each other. At this time, the copy paper tends to curl to the heat roller side due to the influence of heat. Since a fixed image is formed on the
The copy paper is easily carried out in a state where the copy paper is in close contact with the heat roller.

Therefore, a peeling claw is provided for reliably peeling the copy paper from the heat roller. The peeling claw is pivotally supported so as to be freely rotatable, and is urged to rotate so that its tip claw portion elastically contacts the heat roller peripheral wall.

Therefore, even when the copy paper is likely to be wound around the heat roller, the peeling claw intervenes between the heat roller and the copy paper, and the copy paper is reliably peeled from the heat roller.

[0006]

As described above, in the fixing device, the copy paper is prevented from being wound around the heat roller. However, the tip claw portion of the peeling claw is always in sliding contact with the heat roller. Therefore, it wears out over a long period of use.

[0007] That is, the tip claw portion of the peeling claw has a sharp shape, and when worn, the sharp shape is broken and rounded. The peeling claw becomes difficult to be inserted between the heat roller and the copy paper, and the peeling performance is reduced, which causes a paper jam.

Accordingly, it is provided that a worn peeling nail is replaced with a new peeling nail after a predetermined use period. Alternatively, while dealing with a paper jam due to another cause, the tip of the peeling nail may come into contact with the tip of the peeling nail, and the tip may be missing. No.

Conventionally, when exchanging a peeling claw, a unit constituting the peeling claw is removed from the fixing device main body. Next, the screws, which are a plurality of fixtures for assembling the peeling claw unit, are removed.

That is, the peeling claw cover is removed, the upper paper ejection guide is removed, and the peeling claw support frame is removed from the peeling claw unit. Then, the peeling claw is released from the member holding the peeling claw for the first time by removing the springs pressing the peeling claw by the number of the peeling claws.

As described above, the peeling claw itself is an extremely simple and small part, but it is necessary to remove and attach other constituent parts accompanying the peeling claw itself, and replacement of the peeling claw is troublesome. Very poor workability.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fixing device that is configured to facilitate replacement of a peeling claw and that can improve mounting accuracy. The purpose is to:

[0013]

According to a first aspect of the present invention, there is provided a fixing device in which a developer image is formed between a heat roller and a press roller which are brought into contact with each other. In a fixing device that sandwiches and transports the copied paper and replaces the developer image on the copied paper with a fixed image, the leading end of the device is interposed between the heat roller and the copied paper to separate the copied paper from the heat roller. It is characterized by comprising a separating means, a pair of divided bodies, a supporting means for supporting the separating means in a combined state, and a fixing means for combining and fixing the supporting means in a dividable manner.

According to a second aspect of the present invention, in the fixing device according to the first aspect, the peeling means has a tip claw portion slidably in contact with the heat roller and is inserted between the heat roller and the copy paper so as to remove the copy paper from the heat roller. It is characterized by comprising a separating claw to be separated and a shaft loosely inserted into the separating claw and rotatably supporting the separating claw.

According to a third aspect of the present invention, in the fixing device according to the second aspect, the pair of divided bodies constituting the supporting means are rotatably connected at one end via a pivotal support. A receiving portion for receiving the shaft constituting the peeling means is provided at the other end, and a mating portion for rotatably supporting the shaft together with the receiving portion is provided at the other end of the other divided body. Wherein the fixing means attaches and fixes each divided body so as to be freely divided.

According to a fourth aspect of the present invention, in the fixing device according to the third aspect, the receiving portion of the one divided body is formed in a substantially U-shape, and the mating portion of the other divided body is formed in a substantially inverted U-shape. It is characterized in that it is formed and pivots the shaft at the curved portions of each other.

According to a fifth aspect of the present invention, in the fixing device according to the third aspect, one of the divided bodies including the receiving portion has a concave portion through which the peeling claw is inserted and which controls movement of the peeling claw in the shaft axis direction. The other split body having the mating portion is engaged with the peeling claw, and biases the peeling claw elastically so that the tip claw portion of the peeling claw elastically contacts the heat roller. It is characterized by having.

According to a sixth aspect of the present invention, in the fixing device according to the fifth aspect, the radius of the rotation locus of the elastic body is set to be smaller than the radius of the rotation locus of the peeling claw around the pivot. The elastic body is locked so that the elastic force of the elastic body always acts on the peeling claw.

According to a seventh aspect of the present invention, in the fixing device according to the fifth aspect, the radius of the rotation locus of the elastic body is set to be smaller than the radius of the rotation locus of the peeling claw around the pivot. The elastic body is locked so that the elastic force of the elastic body always acts on the peeling claw, and the elastic body abutment surface of the peeling claw is inclined downward with respect to the elastic body. It is easy to get over the surface.

According to an eighth aspect of the present invention, in the fixing device according to the third aspect, when the pair of divided bodies constituting the supporting means are rotated about a pivot, the receiving part and the joining part have a predetermined angle. In this state, a stopper means for restricting further rotation is provided.

According to a ninth aspect of the present invention, in the fixing device according to the first aspect, the pair of divided bodies constituting the supporting means include a portion where at least a part of each of the divided bodies is joined, and the fixing means is a joining portion of the divided bodies. Characterized in that it is a fixing tool for attaching and fixing the.

In order to satisfy the above object, a fixing device according to a second aspect of the present invention is a fixing device according to a tenth aspect, in which a copy sheet is sandwiched between a heat roller and a press roller which are brought into contact with each other, and is carried out. In a fixing device that converts a developer image to be formed into a fixed image, a separation claw that intervenes between a heat roller and a copy paper at a tip claw thereof to separate the copy paper from the heat roller, An upper paper ejection guide having a shaft inserted and rotatably supporting a peeling claw, a receiving portion formed in a substantially U-shape at one end thereof for receiving the shaft, and a receiving portion at one end thereof A separating claw supporting frame having a substantially inverted U-shaped mating portion for pivotally supporting the shaft, and the upper discharge guide and the other end of the separating claw supporting frame for pivotally supporting each other. With the free end of the And pivot portion, characterized by comprising a fixture for dividing freely attached and fixed to each other and the upper discharge guide and the release pawl supporting frame.

By providing means for solving the above-mentioned problems of claims 1 to 10, it is possible to provide a fixing device which can be easily replaced with a peeling claw and which can improve the mounting accuracy. .

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 shows a schematic configuration of a fixing device in the image forming apparatus. As an image forming apparatus, although not shown, a photosensitive drum as an image carrier connected to a driving source is arranged in the apparatus main body. Around the photosensitive drum, a charging charger, an exposing unit, a developing device, a transfer charger, a peeling charger, a cleaning device, a neutralizing lamp, and the like are arranged along the rotation direction.

An original mounting table for mounting an original is provided on the upper surface of the apparatus main body. The optical system of the exposure section exposes the original on the original mounting table, and reflected light from the original is transferred to a photosensitive drum. The surface is irradiated.

An aligning roller pair is provided below the developing device, and a guide body for guiding a copy sheet is arranged between the aligning roller pair and the photosensitive drum. A paper feeder for copying paper is arranged at a side portion of the guide body.

On the other hand, a transport belt for transporting copy paper is disposed below the cleaning device, and a fixing device described later is disposed at a transport end of the transport belt. Is attached.

In the fixing device, the heat roller 2 and the press roller 3 are rotatably supported in the fixing device main body 1 so as to be in contact with each other, and are driven to rotate in the direction of the arrow in the figure. The heat roller 2 includes a heater (not shown) inside the heat roller 2 so as to heat the peripheral wall of the roller. The press roller 3 has a spring (not shown) fixed to its rotation support shaft.
Is pressed and biased so as to elastically abut against.

The silicon roller 4 and the cleaning roller 5 are rolled only in the heat roller 2. An entrance guide 6 is arranged on the copy paper carry-in side of the fixing device main body 1 and opposed to a rolling contact portion between the heat roller 2 and the press roller 3. A paper ejection guide 7, a lower peeling claw 8, and a peeling claw unit 10 are arranged on the copy paper discharge side of the heat roller 2 and the press roller 3.

A paper discharge roller 11 is provided on the copy paper discharge side of the fixing device main body 1, and is rotatably connected to a paper discharge roller 12 provided in the peeling claw unit 10. The lower exfoliation claw 8 has its support shaft part a pivotally supported by the fixing device main body 1 so that the tip claw part 8a slides on the press roller 3 by its own weight. The paper ejection guide 7
Is provided between the lower peeling claw 8 and the paper discharge roller 11, and guides the copy paper discharged from the heat roller 2 and the press roller 3 to the rolling contact position of the paper discharge rollers 11 and 12.

The peeling claw unit 10 is provided over the lower peeling claw 8, the paper discharge guide 7 and the upper portion of the paper discharge roller 11. The upper sheet discharge guide 14 serving as a first divided body
And a second divided body, which is composed of a peeling claw support frame 15 constituting a supporting means together with the upper paper ejection guide 14, a fixing tool 16 constituting a fixing means, an arm 17, a cover 18, and the like.

That is, the cover 18 constitutes a part of the cover 1a of the fixing device main body 1, and the arm 17 is integrally attached to the inner surface thereof in the vertical direction.
A first pivot 19 is provided at the upper end of the arm 17 and is pivotally supported by the fixing device body 1 together with the cover 18.

A second pivot 20 is provided at the lower end of the arm 17, and the upper discharge guide 14 and one end of the peeling claw support frame 15 are pivotably supported. . The upper paper discharge guide 14 and the peeling claw support frame 15 are mounted and fixed by the fixing tool 16 and are integrated.

A stopper 21 is provided at one end of the peeling claw support frame 15 on the side of the pivotal support. The stopper 21 contacts the lower end edge of the arm 17 so that the peeling claw support frame 15 Top ejection guide 1
Reference numeral 4 indicates that the rotation in the clockwise direction beyond the posture shown in the figure is restricted, but the rotation in the counterclockwise direction is free.

FIG. 2 shows the details of the peeling claw 13, the upper discharge guide 14 and the peeling claw support frame 15. A plurality of the peeling claws 13 are provided at predetermined intervals, and each is formed in a substantially rectangular shape in a side view. One end portion is a claw portion 13a formed in a sharp shape, the other end portion is provided with a concave portion 13b, and the upper end surface is a so-called upward slope 13c.

A through hole 13d is formed at a substantially central portion of the peeling claw 13.
Is provided, and the shaft 22 is loosely inserted therein. That is, the peeling claw 13 is rotatably supported on the shaft 22. Only the both ends 22a of the shaft 22 are formed to have a smaller diameter than the part where the peeling claw is loosely inserted.

The upper discharge guide 14 is formed of a plate having a plate surface having a predetermined width along the copy paper transport direction. A reinforcing plate 23 for reinforcing the plate surface is integrally provided on the upper surface portion, and a fixed frame 24 as a rising tongue is provided on both left and right sides of the reinforcing plate 23 in the short direction of the upper paper discharge guide 14 ( (Same as the copy paper transport direction).
A pivotal support hole 25 and a screw hole 26 are arranged in the fixed frame 24 at predetermined intervals.

Further, a receiving portion 27 is provided in the vicinity of the fixed frame 24 along the short direction of the upper discharge guide 14. The receiving portion 27 is a substantially U-shaped concave portion, and the radius of curvature of the curved surface portion is formed to be the same as the radius of the shaft end 22a.

A positioning recess 28 is provided between the receiving portions 27 on the left and right sides at a predetermined interval. These positioning recesses 28 are provided corresponding to the mounting positions of the peeling claws 13 and are set to have a width dimension that allows the peeling claws 13 to be inserted.

The peeling claw support frame 15 is formed of a plate piece whose left and right sides are bent downward and one side along the longitudinal direction is bent upward. The distance between the bent pieces 15a on the left and right sides is determined by the upper discharge guide 1
4 is formed slightly larger than the interval between the fixed frames 24.

A pivot hole 29 and a mounting hole 30 are juxtaposed in the bent piece portion 15a. The pivot hole 29 and the mounting hole 30 are provided in the fixed frame 24. 25 and a screw hole 26.

Further, an inverted U is provided at the lower end edge of the bent piece portion 15a.
A letter-shaped notch is formed, and this is referred to as a mating portion 31. The radius of curvature of the curved surface portion of the joining portion 31 is formed to be the same as the radius of the shaft end 22a, similarly to the receiving portion 27.

The stopper 21 provided on the peeling claw support frame 15 corresponds to the upper surface of the bent piece 15a. The rising piece 15 bent upward.
b is a reinforcing piece of the peeling claw support frame 15.

The coil spring 32, which is an elastic body, is spaced apart from and opposed to the reinforcing piece 15b and at a predetermined interval.
The mounting piece 15c to which is attached is integrally bent.
These mounting pieces 15c are provided with the positioning recesses 28.
And a pair of bent pieces which are provided corresponding to the mounting positions of the peeling claws 13 and are bent at a predetermined interval such that the peeling claws can be inserted into each other.

The coil spring 32 has both ends mounted and fixed to the respective mounting pieces 15c, and the coil portion is laid across the mounting pieces 15c. Here, the coil spring 32 is used as the elastic body, but a linear spring or a leaf spring does not cause any problem.

As shown particularly in FIG. 6, when the second pivot portion 20 is the center, the radius of the rotation trajectory Ra of the center of the peeling claw 13 (ie, the shaft 22) is larger than the radius Ra of the coil spring 32. The radius Rb of the rotation trajectory is set to be small (Ra> Rb).

Therefore, in a state where the coil spring 32 is engaged with the concave portion 13b of the peeling claw 13, the coil spring 32 extends beyond its free length. The shaft 22 is urged to rotate clockwise about the shaft 22.

As shown in FIGS. 1 to 3, in the assembled state, the left and right bent pieces 15 of the peeling claw support frame 15 are provided on the outer surface of the left and right fixed frame 24 of the upper discharge guide 14.
a is engaged. The pivot hole 29 and the mounting hole 30 provided in the bent piece portion 15a correspond to the pivot hole 25 and the screw hole 26 of the fixed frame 24, respectively.

A pivot pin is inserted together with the arm 17 into the pivot hole 29 of the bent piece portion 15a and the pivot hole 25 of the fixed frame 24, and these constitute the second pivot portion 20. You.

The fixing screw 16 serving as the above-mentioned fixing tool is screwed into the mounting hole 30 of the bent piece portion 15a and the screw hole 26 of the fixing frame 24, whereby the upper sheet discharging guide 14, the peeling claw supporting frame 15 and Are united.

The integrated upper discharge guide 14 and peeling claw support frame 15 are attached to the arm 17 by the second pivot 2.
0, the stopper 21 of the peeling claw support frame 15 is in contact with the lower edge of the arm 17 to restrict the clockwise rotation as described above. It is on the street.

On the other hand, in a state in which the upper discharge guide 14 and the peeling claw support frame 15 are assembled integrally, the side surfaces of the receiving portion 27 and the joining portion 31 are in close contact with each other, and the curved surface portions are in opposite directions. , One perfect circular space is formed here.

The shaft 2 is inserted into a perfect circular space formed by the receiving portion 27 and the joining portion 31 on both right and left sides.
The two end portions 22a are fitted and supported. This shaft 22
, A plurality of peeling claws 13 are loosely inserted, and the peeling claws 13 are rotatably supported on the shaft 22.

A part of the peeling claw 13 is inserted into a positioning recess 28 provided in the upper paper ejection guide 14, thereby restricting the movement of the peeling claw 13 along the axial direction of the shaft 22, and positioning the peeling claw 13 at a predetermined position. Is done.

The tip claw portion 13a of the peeling claw 13 protrudes from the upper discharge guide 14. The upper end of the peeling claw 13 is inserted into the mounting piece 15c of the peeling claw support frame 15,
The coil spring 32 stretched here is engaged with the concave portion 13 b provided on the peeling claw 13.

As described above, since the turning trajectory radius Rb of the coil spring 32 is set to be smaller than the turning trajectory radius Ra of the center of the peeling claw 13, the coil spring is always extended beyond the free length. Become.

Accordingly, the elastic force of the coil spring 32 acts on the peeling claw 13 and urges the peeling claw to rotate clockwise about the shaft 22. This rotation direction is
The direction corresponds to the direction in which the tip claw portion 13a of the peeling claw 13 elastically slides on the heat roller 2.

Thus, the peeling claw unit 10 is configured. Therefore, the tip claw portion 13 of the peeling claw 13
“a” always intervenes between the heat roller 2 and a copy sheet (not shown) to separate the copy sheet from the heat roller 2.

Further, each peeling claw 13 is formed by one shaft 2
2, each of the peeling claw tip claws 13a
Are in contact with the heat roller 2 in substantially the same phase. Therefore, the peeling performance of each peeling claw 13 can be kept substantially the same.

The peeling claw 13 whose tip claw portion 13a has been worn is replaced with a new one at a predetermined use period. Or,
The same applies to the case where the peeling nail tip claw portion 13a is mistakenly lost during the paper jam treatment.

At this time, the fixing screw 16 is removed. Then, as shown in FIG. 4, the attachment and fixation of the upper paper ejection guide 14 to the separation claw support frame 15 are released. Since the stopper 21 of the peeling claw support frame 15 is locked to the lower edge of the arm 17, the posture of the peeling claw support frame 15 is continuously maintained, but the upper discharge guide 14 has one end at the second end. Is connected only to the peeling claw support frame 15 via the pivotal support 20 of the other end, and the other end rotates clockwise.

Accordingly, the upper discharge guide 14 rotates while supporting the shaft 22 on the receiving portion 27 thereof, and
A gap is formed between 7 and the mating portion 31 of the separation claw support frame 15. When the upper discharge guide 14 rotates by a predetermined angle, the upper surface portion contacts the lower end edge of the bent piece portion 15a of the peeling claw support frame 15, and further rotation is restricted.

As shown in FIG. 5, a sufficient gap is formed between the receiving portion 27 of the upper discharge guide 14 and the mating portion 31 of the separation claw support frame 15, so that the separation claw 13 is taken out together with the shaft 22. .

At this time, both ends 22 a of the shaft 22 are simply formed into the U-shaped receiving portions 27 of the upper discharge guide 14.
The shaft 22 is only supported by the
7 can be taken out very easily.

Then, each peeling claw 13 is moved along the axial direction of the shaft 22, and is removed from its one end 22a. At this time, the peeling claw 13 is only loosely inserted into the shaft 22 and does not particularly use a fixing member, so that removal is easy.

The new peeling claw 13 is loosely inserted into the shaft 22, and this shaft 22 is inserted into the receiving portion 27 of the upper discharge guide 14.
Again. Naturally, each peeling claw 13 is connected to the upper discharge guide 1.
4 is inserted into the positioning recess 28.

Next, the upper discharge guide 14 is urged upward with its free end on the receiving portion 27 side. Receiving part 2
7 is brought into contact with the mating portion 31 and the shaft 22 is again pivotally supported, and the fixing screw 16 is screwed into the screw hole 26 through the mounting hole 30 so that the upper paper ejection guide 14 Are fixed and integrated with each other.

The operation of attaching the peeling claw 13 is as follows.
Everything is the opposite of the removal operation described above, and all of them take only extremely easy labor. Therefore, the peeling nail 13
Is improved so that it can be easily performed in a very short time and without any trouble.

The peeling nail 13A as shown in FIG. 7 may be used. Also in this embodiment, the radius Ra of the rotation locus of the shaft 22 and the radius R of the rotation locus of the coil spring 32 are set.
b may be the same as the relationship described above. The configuration of the peeling claw 13A itself is the same as that described above except for the upper end.

The upper end 13z of the peeling claw 13A is formed on a downwardly inclined surface so as to have a predetermined angle θ with respect to the tangential direction of the coil spring 32. The angle θ is an angle that does not become at least larger than 90 ° (θ ≦ 90 °). Preferably, it may be in the range of 30 ° to 60 °.

When the upper end 13z of the peeling claw comes into contact with the coil spring 32 when the peeling claw 13A is attached to a predetermined portion, the upper end 13z is formed on the downward inclined surface. 32, the coil spring 32 is locked in the recess 13b.

That is, in the configuration of the peeling claw 13 described above, the upper end portion 13c of the peeling claw 13 cannot climb over the coil spring 32 unless the coil spring 32 is greatly extended and deformed.
In the case of A, the coil spring 32 does not need to be extended so much, and the work of attaching the peeling claw 13A is further facilitated.

[0073]

As described above, according to the present invention, the means for supporting the peeling claw can be disassembled only by attaching and detaching the fixing means, and the peeling claw can be attached and detached from here. Therefore, the exchanging operation of the peeling claw is extremely facilitated, and there is an effect that the mounting accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a fixing device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a part of the fixing device peeling claw unit of the embodiment.

FIG. 3 is a side view of the peeling claw unit of the embodiment.

FIG. 4 is a side view of the embodiment with the fixing screw of the peeling claw unit removed.

FIG. 5 is a side view of the same embodiment with the peeling claw of the peeling claw unit removed.

FIG. 6 is a diagram illustrating a relationship between a peeling claw and a spring according to the embodiment.

FIG. 7 is a diagram illustrating a relationship between a peeling claw and a spring according to another embodiment.

[Explanation of symbols]

 2 Heat roller 3 Press roller 13 Peeling claw 13a Tip claw 22 Shaft 14 First divided body (upper discharge guide) 27 Receiving part 28 Depression recess 15: second divided body (peeling claw support frame), 31: mating part, 20: second pivotal support part, 16: fixture (fixing screw), 32: elastic body (coil spring).

Claims (10)

[Claims] 1. A fixing device for holding a copy paper on which a developer image is formed between a heat roller and a press roller which are brought into contact with each other and carrying out the copy paper, and replacing the developer image on the copy paper with a fixed image. , Its tip is interposed between the heat roller and the copy paper,
Separating means for separating the copy paper from the heat roller, supporting means comprising a pair of divided bodies, supporting the separating means in a combined state, and fixing means for combining and fixing the supporting means in a dividable manner. A fixing device. 2. The peeling means includes a peeling claw having a tip claw portion slidably in contact with the heat roller and interposed between the peeling claw and the copy paper to peel the copy paper from the heat roller. The fixing device according to claim 1, further comprising a shaft that is inserted and rotatably supports the peeling claw. 3. A pair of divided bodies constituting the supporting means,
One end of each is rotatably connected via a pivotal support, and the other end of one of the divided bodies is provided with a receiving portion for receiving a shaft constituting the peeling means, and the other end of the other divided body is 3. A joint portion for rotatably supporting a shaft together with the receiving portion is provided, and an intermediate portion of the joining portion is attached and fixed to each of the divided bodies so as to be able to be divided.
The fixing device as described in the above. 4. A receiving portion of said one divided body is formed in a substantially U-shape, and a mating portion of said other divided body is substantially inverted U-shaped.
The fixing device according to claim 3, wherein the fixing device is formed in a shape of a letter, and the shafts are pivotally supported by the curved portions. 5. One of the divided bodies provided with the receiving portion has a positioning concave portion through which the peeling claw is inserted and restricts movement of the peeling claw in the axial direction of the shaft, and the other provided with the mating portion. The split body is provided with an elastic body which is engaged with the peeling claw and applies an elastic force to the peeling claw so that a tip claw portion of the peeling claw elastically slides on the heat roller. Item 3. The fixing device according to Item 3. 6. The elastic force of the elastic body always acts on the peeling claw by setting the radius of the rotating locus of the elastic body to be smaller than the radius of the rotating locus of the peeling claw around the pivot portion. 6. The fixing device according to claim 5, wherein the fixing device is locked. 7. The resilient force of the elastic body always acts on the peeling claw by setting the radius of the revolving locus of the elastic body to be smaller than the radius of the revolving locus of the peeling claw around the pivot portion. 6. The fixing device according to claim 5, wherein the fixing member is locked so that the elastic member abuts on the peeling claw with respect to the elastic member. 8. A pair of divided bodies constituting said supporting means,
4. The fixing device according to claim 3, further comprising stopper means for restricting further rotation in a state where the receiving portion and the joining portion have a predetermined angle when rotating about the pivot portion. apparatus. 9. A pair of divided bodies constituting said supporting means,
The fixing device according to claim 1, further comprising a part where at least a part of the divided bodies is joined, and wherein the fixing unit is a fixing tool that attaches and fixes the joined part of the divided body. 10. A fixing device for holding a copy paper between a heat roller and a press roller which are brought into contact with each other and carrying it out, and for converting a developer image formed on the copy paper into a fixed image, a tip claw portion thereof A separating claw that intervenes between the heat roller and the copy paper to separate the copy paper from the heat roller, a shaft that is loosely inserted into the separation claw and pivotally supports the separation claw, and one end of the shaft. An upper discharge guide having a substantially U-shaped receiving portion for receiving the shaft, and an approximately U-shaped mating portion for pivotally supporting the shaft together with the receiving portion at one end thereof. A pivoting support portion that pivotally supports the upper discharge guide and the other end of the release claw support frame, and is rotatable with each of the receiving portions and the mating portion as a free end; Separate the paper ejection guide and peeling claw support frame from each other. Fixing device being characterized in that includes a fixture which freely mounted and fixed.