JPH09160426A - Fixing device and placing device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain fixed press-contact force with a weaker elastic member and to facilitate the work such as the assembling and maintenance of a fixing device by supporting a press-contact roller with first and second rocking members and bringing the press-contact roller into press-contact with a thermofixing roller whose rotational position is fixed. SOLUTION: The thermofixing roller 101 incorporating a heater 103 is freely rotatably provided and the press-contact roller 102 is arranged to come into contact with a part of the thermofixing roller 101, thereunder. The first rocking member 104 fixed to a supporting shaft 106 fixed to a part of the foxing device 200, on one end is provided on the side of the press-contact roller 102 and an elastic member S1 consisting of a coil spring is attached to an elastic member supporting part 108 on the other end. And, the second rocking member 105 is provided inside the first rocking member 104 parallely to it. One end of the second rocking member 105 is fixed to a supporting shaft 111 fixed to the fixing device 200 and provided through a clearance hole 1071 and an actuating member 109 fitted into an actuating hole 1072 is provided on the other end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device using a pair of rollers used in an image forming apparatus such as a copying machine or a printer.

[0002]

2. Description of the Related Art Conventionally, a heat fixing device has been used as a means for fixing a toner image transferred on a recording sheet, mainly in a copying apparatus, a printer or the like which forms an image by an electrophotographic method. As a heat fixing device, for example, Japanese Utility Model Publication No. 4-17952
A pair of pressure-bonding heat fixing rollers and pressure-bonding rollers, which have high thermal efficiency and are capable of high-speed toner image fixing processing as described in Japanese Patent Publication, are often used.

FIG. 6 shows a fixing device 200 composed of a pair of heat fixing rollers and a pressure roller. In contrast to the heat fixing roller 101 having the built-in heater 103 arranged in the upper part, one end of the lower pressure bonding roller 102 is supported by the shaft 106, and the other end of the rocking member 104 is provided with the elastic member S for pressure bonding. 102 was mounted via the bearing 110, and the pressure bonding roller 102 was pressed against the heat fixing roller 101 at a pressure of several tens kg by the pressure of the elastic member S for pressure bonding.

Further, the heat fixing roller 101 having the heater 103 disposed in the upper portion comes into contact with the toner image P1 formed on the recording paper P and heat-fixes it, so that the heat fixing roller 10 is provided.
Since toner adheres to one surface, cleaning is performed. As the cleaning means, as shown in FIG. 7, a cleaning sheet 124 impregnated with silicone oil having a small resistance to the surface of the photosensitive drum and a good cleaning effect is used by the sheet supplying means 122 by the elastic member S4 and the pressing member 126. The cleaning sheet 124 is supplied while being pressed to prevent slack, and is pressed by the intermediate guide member 123 that is brought into contact with the heating fixing roller surface to perform cleaning, and then the sheet cleaning means that winds the sheet with the winding means 125. It is used.

Further, at the position where the recording paper is ejected by the pair of heat fixing rollers, a separating claw is provided in contact with the recording paper to prevent the recording paper from winding around the pair of heat fixing rollers.
However, even if the separation claw is provided, the recording paper may sometimes wind around the heat fixing roller arranged above, and it is necessary to separate the recording paper from the surface of the heat fixing roller together with the support member supporting the separation claw. Then, after removing the recording paper from the surface of the heat fixing roller, the separation claw is again brought into contact with the surface of the heat fixing roller.

Further, when the fixing device is used for a long period of time, maintenance such as replacement of the rollers of the fixing device including the pair of heat fixing rollers and replacement of the sheet of the completed sheet cleaning means is required. Will be needed. At that time, the copying machine is removed from the mounting table on which the fixing device is mounted.

[0007]

As described above, as shown in FIG. 6, one end of the lower pressure roller 102 is supported by the support shaft 106 and the other end of the lower pressure roller 102 is opposed to the heating fixing roller 101 disposed at the upper end. The pressure roller shaft 110 is attached to the swing member 104 provided with a pressure spring, and the pressure roller 102 is pressed against the heating fixing roller 101 by the pressure of the pressure elastic member S. Generally, the lower pressure-bonding roller 102 is pressed against the heating fixing roller 101 with a load of 50 to 60 kg. Therefore, as the elastic member S for pressure bonding, a strong elastic member corresponding to the pressure is used, and it is necessary to assemble against the strong elastic member as described above particularly during the assembling work of the pressure roller 102.

Further, as shown in FIG. 7, the heating fixing roller arranged on the upper portion is a sheet feeding means 122 which is a sheet 124 impregnated with silicon oil having a small resistance to the surface of the photosensitive drum and a good cleaning effect. The sheets 124 are sequentially supplied, and the sheets 124 are fed to the intermediate guide roller 1.
A sheet cleaning unit is used in which the surface of the fixing roller 101 for heating is contacted via 23 to perform cleaning, and then the sheet is wound by the winding unit 125. The sheet 124 impregnated with silicon oil is in the initial stage of use. In this case, a large number of sheets are wound around the sheet supply unit 122 and are arranged above the heating fixing roller 101. Therefore, the sheet 124 is heated by the heat of the heating fixing roller 101, and at the same time, the silicon oil is also heated, so that the silicon oil oozes out and falls from the sheet 124 as indicated by 124A, and enters the recording sheet of the heating fixing roller. Since it falls to the side, the soaked silicone oil 124A adheres to the recording paper, degrading the image quality.

Further, as described above, even if the separation claw is provided, the recording paper may sometimes wrap around the heat fixing roller arranged on the upper side, and the recording paper may be separated from the surface of the heat fixing roller together with the support supporting the separation claw. Need to let. Then, after the recording paper is removed from the surface of the heat fixing roller, the support is operated so that the separation claw comes into contact with the surface of the heat fixing roller again. In particular, since the heat fixing roller is provided on the upper part, the support is moved upward together with the separation claw to remove the recording paper from the surface of the heat fixing roller, and then the support is moved downward and returned. Since the paper discharge guide portion for recording paper is also formed on the supporting body and is heavy, when it is returned by a free fall, the tip of the separating claw collides with the heat fixing roller surface at the falling speed, and the separating claw is separated. The tip of the fixing claw is damaged or the tip of the separation claw damages the surface of the heat fixing roller, resulting in defective fixing of the toner image.

As described above, it is necessary to remove the fixing device in the copying machine from the mounting table. However, the fixing device has a heat fixing roller built therein, and the heat fixing roller is used to improve the fixing efficiency. Has a long heat preservation performance and is hard to cool, and since it is a pair of rollers, it is heavy and it is difficult to remove it from the mounting table.

The present invention has been conceived in order to eliminate the above-mentioned drawbacks. A sheet for cleaning the heat fixing roller by pressing the pressure fixing roller against the heat fixing roller at a predetermined pressure even with an elastic member having a weak elastic force is used. An object of the present invention is to prevent the silicone oil from dropping, to slow down the return speed of the separation claw opened from the heat fixing roller, and to make it easier to attach and detach from the mounting table on which the fixing device in the copying machine is mounted.

[0012]

To achieve the above object, the present invention provides an image according to claim 1, wherein a pair of rotatably mounted rollers are pressed together and heated to form an image on a recording sheet between the rollers. In a fixing device for fixing a roller, one roller of the pair of rollers whose rotational position is fixed and one end supported by a fulcrum and the other end urged toward the one roller by an elastic member. The moving member and the first swinging member are connected by a connecting member located near the fulcrum, and the second oscillating member having a fulcrum near the elastic member position supports the other roller to fix the rotation position. The one roller and the other roller are brought into pressure contact with each other, and the first oscillating member and the second oscillating member are configured as a pair, and each of the other one The roller is provided on both sides of the roller, The elastic member is a coil spring, and the pair of rotatably mounted rollers are pressed together and heated to fix the image formed on the recording paper between the rollers. In the apparatus, one of the pair of rollers, which is located on the upper side, and a cleaning means provided on the one roller, which supplies a cleaning sheet, and a sheet supply means. An intermediate guide roller that receives the sheet supplied from the sheet winding means and guides the sheet to the sheet winding means, and supplies the sheet between the sheet supply means and the intermediate guide roller from the one roller surface side. According to claim 5, the sheet feeding means is provided at an upper position of the one roller, and the sheet is impregnated with silicone oil for cleaning. 7. The pair of rollers rotatably provided in claim 7, wherein the one roller is a heat fixing roller in which heating means is provided in the roller. It is provided on the paper discharge side for discharging the recording paper after fixing the image formed on the recording paper between the rollers by pressing and heating the rollers.
Further, in a fixing device having a separation claw that comes into contact with the pair of roller surfaces and separates the recording paper, an opening means that supports the separation claw at one end and rotatably pivots the other end, and the separation device. Of the pair of rollers, the claw is separated from one of the rollers and opened, and when the opening claw returns from the open position to the closed position, before the separation claw contacts the one roller, The opening means comprises a stopping means for stopping, and the roller for separating one of the separation claws is a heat fixing roller in which a heating means is provided in the roller. 9. The recording paper discharge guide means in the opening means according to claim 9,
In the mounting device of the fixing device, a pair of rollers rotatably provided in the image forming device are pressed and heated, and the image formed on the recording paper is fixed and discharged between the rollers. A first mounting table fixed to the forming apparatus, and a second mounting table that can be pulled out to the first mounting table in a direction perpendicular to the fixing and discharging direction and that is stopped by a first stopping unit that stops at a fixed position when withdrawn. A placing table; and a third placing table which can be pulled out in the same direction as the pulling-out direction of the second placing table and which is stopped by a second stopping means which stops at a fixed position when withdrawn.
The fixing device is mounted on the third mounting table, and the second stopping means for pulling out the third mounting table and stopping at a fixed position of the second mounting table is the second mounting table according to claim 11. The protrusion formed on the third mounting base and an elastic locking member provided on the third mounting table are locked and fixed, and the fixed state is released by releasing the elastic locking member from the projection. 1
In the second aspect, the third mounting table is achieved by allowing the third mounting table to be pulled out to a position outside the image forming apparatus with the fixing device mounted.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, parts common to those of the fixing device 200 shown in the prior art will be described with common numbers. A heat fixing roller 101 having a built-in heater 103 is rotatably provided at an upper position, and a pressure bonding roller 102 is arranged below the heat fixing roller 101 so as to contact a part of the heat fixing roller 101. A first swing member 104 having one end fixed to a support shaft 106 fixed to a part of the fixing device 200 is provided on the side of the pressure roller 102, and is fixed to an elastic member support portion 108 formed at the other end. An elastic member S1 including a coil spring provided in a part of the device 200 is attached. Further, the elastic member S provided on the first swinging member 104
A clearance hole 1071 is formed in the vicinity of 1 and a slightly horizontally long operation hole 1072 is formed in the vicinity of the support shaft 106. A second swinging member 105 is provided side by side inside the first swinging member 104, and the second swinging member 105 is provided.
Is fixed to the fixing device 200, one end is fixed to a support shaft 111 provided through the escape hole 1071, and the other end is provided with an operating member 109 which fits into the operating hole 1072.

One end of the pressure roller 102 is rotatably provided on the pressure roller receiving portion 1101 of the second swinging member 105 configured as described above via a bearing 110.

Reference numeral 112 denotes a lower sheet discharge guide plate for the recording sheet P, which is provided with a sheet discharge guide roller 114 rotatably. Further, the sheet discharge side of the pressure roller 102 is swingably separated by a support portion 1131. A claw 113 is provided, and the tip of the separation claw 113 is always brought into contact with the surface of the pressure roller 102 by the elastic member S2.

A separating claw 115 is also provided on the paper discharge side of the heat fixing roller 101. The separating claw 115 is swingably provided by a supporting portion 1151 at the other end of an opening member 121 having one end rotatably provided on a support shaft 201 provided at the upper part of the fixing device 200, and an elastic member S3. The tip of the separating claw 115 is always brought into contact with the surface of the heat fixing roller 101. Further, below the opening member 121, the lower paper ejection guide plate 11 is provided.
An upper sheet ejection guide plate 117 is provided so as to be paired with 2,
Further, there is provided a paper discharge guide roller 117 which is in constant contact with the paper discharge guide roller 114 and rotates.

Now, when the recording paper P is wound around the surface of the heat fixing roller 101 or a jam occurs such that the recording paper P causes a conveyance failure at the paper discharge position, when the release member 121 is released together with the separation claw 115. First, the protrusion 1 is rotatably provided on the opening member 121 and elastically supported by the elastic member S5 in the non-operating direction.
The release lever 118 held by 211 is connected to the elastic member S5.
The locking concave portion 120 formed at the tip is released from the locking portion 1051 provided in the fixing device 200 by rotating in the direction of the arrow against the locking direction. Next, an opening lever 203 provided on a part of the opening member 121 is opened around the support shaft 201, and the separation claw 1
The front end of 15 is separated from the surface of the heat fixing roller 101, and at the same time, the upper discharge guide plate 117 and the discharge guide roller 117 are separated from the lower discharge guide plate and the discharge guide roller 114 and are opened.

Reference numeral 204 denotes a cleaning device for cleaning the surface of the heat fixing roller 101. Silicon oil (oil clay 60000C) is provided in the cleaning device 204.
The sheet feeding shaft 122 around which the cleaning sheet 124 (aromatic polyamide-based nonwoven fabric) impregnated with (S) is wound is arranged at the position of the alternate long and short dash line A from the heater 103, while the intermediate guide roller is placed at the position of the alternate long and short dash line A1 from the heater 103. 123
And the cleaning sheet 124 is placed from the position of the alternate long and short dash line A to the position of the alternate long and short dash line A1.
The intermediate guide roller 12 is arranged so as to be in close contact with one surface.
All of the cleaning sheets 124 between 3 are brought into close contact with the surface of the heat fixing roller 101. Further, the pressing member 126 pressed by the elastic member S4 is used to constantly press the cleaning sheet 124 at the position of the alternate long and short dash line A to prevent the slack. Cleaning device 204 configured as described above
As shown in FIG. 1, the recording paper guide plates 202, 20
When the image P1 formed on the recording paper P is thermally fixed by the heat fixing roller 101 while being guided by the image forming section 3, part of the toner adheres to the surface of the heat fixing roller 101, so that the cleaning sheet 124 is used. To clean. Further, when a large number of recording sheets P are passed, the cleaning sheet 1
In order to reduce the dirt cleaning effect on the surface of the heat fixing roller 24 and the heat fixing roller 101, a winding roller 125 is provided above the intermediate guide roller 123, and the cleaning sheet 12 used.
4 is sequentially wound by using a suitable driving means, and the surface of the heat fixing roller 101 is cleaned with a new cleaning sheet 124.

FIG. 2 shows the first for receiving the pressure roller 102.
FIG. 6 is an exploded perspective view of a swing member 104 and a second swing member 105. The operation member 109 provided on the second swing member 105 is fitted into the operation hole 1072 provided near the support shaft 106 of the first swing member 104, and the support shaft 111 at the other end is attached to the first swing member 1.
In the vicinity of the elastic member S1 held by 04, the fixing device 20
Since the elastic member S1 pushes the first swinging member 104 upward with the support shaft 1061 as a fulcrum, the working hole 1072 of the first swinging member 104 is driven by the principle of leverage.
A push-up force that is several times the elastic force of the elastic member S1 acts on, and the actuating member 109 is pushed up by the push-up force. Therefore, the pressure roller 102 pushed up by the second swinging member 105 uses only a few kg of the elastic member S1, and the surface of the heat fixing roller 101 is pressed by a pressing force of several tens kg (about 10 times the pressing force). You can press it. Also, a weak elastic member S of several kg
1, the fixing device 200 can be easily assembled.

FIG. 3 is a side view of the heat fixing roller 101 and the pressure bonding roller 102 shown in FIG.
The first swinging member 1 for pressing the sheet against the surface of the heat fixing roller 101.
04 is a configuration diagram in which the second swinging member 105 and the elastic member S1 are provided on both sides of the pressure roller 102. By providing the pressure roller 102 on both sides as shown in FIG. 3, the pressure roller 102 can obtain a stable pressing force on the heat fixing roller 101.

In FIG. 4, as described above, for example, the recording paper P is wound around the heat fixing roller 101, or the recording paper P is discharged on the discharge side.
Causes a jam such as a poor conveyance, opens the opening member 121 and completes the processing, and then the opening lever 203 returns the opening member 121 to the original position. At that time, the tip end abutting portion 1181 of the release lever 118, which is returned by the elastic member S5 and the protrusion portion 1211, is engaged with the locking portion 1051.
The opening member 121 temporarily stops at this position. Therefore, the tip of the separation claw 115 and the heat fixing roller 10
The distance "H" is maintained between the surfaces, so that the tip of the separating claw 115 does not damage the surface of the heat fixing roller 101 or damage the tip of the separating claw 115.

Next, the release lever 118 is again rotated in the direction of the arrow against the elastic member S5 to release the tip abutting portion 1181 from the protrusion 1211 and the opening member 121 to the original position shown in FIG. After returning, the tip of the separation claw 115 is attached to the heat fixing roller 1.
The surface 01 is gently contacted by the elastic member S3.

FIGS. 5A and 5B show the fixing device 20.
A mounting device that pulls 0 from the inside of the image forming apparatus 400 to the outside while mounting 0 on the mounting table is shown.

In FIG. 5A, 300 is the image forming apparatus 40.
0 in the first mounting table fixed with a fixing screw 303
Guide portions 301 and 302 having a U-shaped cross section are formed in the longitudinal direction of both edges of the mounting table 300. Further, the first stop portion 30 is provided at the pull-out side end portions of the guide portions 301 and 302.
5, 306 are formed. Further, the first mounting table 3
00 second stacking table 30 movably superposed along the top
7, guide portions 310 and 311 having a U-shaped cross section are formed in the longitudinal direction of both edge portions of the second mounting table 307. The guide portions 310 and 311 are connected to the guide portions 301 and 3 respectively.
02 and the guide portion 31
The locking portion 3 that is locked to the first stop portions 305 and 306 when the second mounting table 307 is pulled out to the rear end portions of 0 and 311.
08, 309 are provided. Further, the second mounting table 3
Second stoppers 312 and 313 are formed at the end portions of the guide portions 310 and 311 in the drawing direction 07. Furthermore,
A third mounting base 314 is provided so as to be movable along the second mounting base 307, and a guide unit for guiding and mounting the fixing device 200 in the longitudinal direction of both edges of the third mounting base 314. 320 and 321 are formed. The guide 32
0 and 321 are movably fitted in the guide portions 310 and 311 and the third mounting table 314 is pulled out to the inner side of the guide portions 320 and 321, the second stop portion 305,
Locking portions 318 and 319 having plate-like elastic bodies 315 and 316 locked to 306 are provided partially fixed to the third mounting table 314.

As described above, when the fixing device 200 is mounted and fixed on the third mounting table 314 and is pulled out from the image forming apparatus 400 via the first and second mounting tables, it is outside the image forming apparatus 400 as shown in the figure. The fixing device 200 can be pulled out in the direction of the arrow, and for example, as shown in FIG.
1 can be released to perform jam processing.

FIG. 5B is an operation explanation for removing the fixing device 200 together with the third mounting table 314 from the second mounting table 307. Only a part of the drawing is enlarged for illustration of the operation. First, the plate-shaped elastic body 316 formed in the locking portion 319 is moved inward as shown by an arrow from the operation hole 317 formed in the guide portion 311 of the second mounting table 307 by using the tip of a driver or the like. The elastic body 316 to the second stop portion 312.
And the fixing device 200 together with the third mounting table 314 are released while maintaining the released state.
7. Remove from 7, and perform work such as maintenance.

For attachment, one end of the third mounting table 314 is placed on the second mounting table 307, and the guide portions 320, 321 of the third mounting table 314 are connected to the guide portions 310, 310 of the second mounting table 307.
By pushing in the direction of the image forming apparatus 400 while being guided by 311, the plate-like elastic body 316 automatically moves inward by the inclined surface 3121 formed in the second stop portion 312, and again as shown in the figure. The plate-shaped elastic body 316 is locked to the second stop portion 312.

[0028]

According to the first aspect of the present invention, the pair of heat fixing rollers are fixed at a rotational position, one end is supported by a fulcrum, and the other end is urged by an elastic member toward the heat fixing roller. The pressure roller is supported by a second swinging member which is connected to the first swinging member by a connecting member which is located near the fulcrum of the first swinging member, and which has a fulcrum near the position of the elastic member, and the rotational position is fixed. Since the pressure roller is configured to be pressed against the heat fixing roller according to the principle of leverage, an elastic member weaker than the elastic member for obtaining a predetermined pressure can be used. The work has become extremely easy.

In the second aspect, the first swing member,
Since the second rocking member is composed of a pair and is provided on both sides of the pressure roller, a stable pressure force can be obtained even if a weak elastic member is used.

In the third aspect of the present invention, the elastic member is a coil spring, so that the elastic force can be easily selected and the cost is low.

According to the present invention, the sheet between the sheet feeding means and the intermediate guide roller is fed from the heat fixing roller surface side, so that the sheet is wound around the sheet feeding means. The oil does not flow down the sheet impregnated with silicone oil and is evenly supplied to the heat fixing roller so that it does not drop on the heat fixing roller surface and adhere to the recording paper, and a good image is obtained. You can get it.

In the seventh, eighth and ninth aspects, when the opening means for supporting and opening the separation claw is returned from the open position to the closed position, before the separation claw comes into contact with the heat fixing roller. Since the stop means for stopping the opening means is provided, the tip of the separation claw does not damage the heat fixing roller surface, and the separation claw itself is not damaged. Therefore, the heat fixing roller can be satisfactorily held for a long period of time, and winding of the heat fixing roller surface due to breakage of the separation claw can be prevented.

According to the tenth, the eleventh and the twelfth aspects, the first mounting table fixed to the image forming apparatus and the first mounting table can be drawn out in a direction perpendicular to the fixing and discharging direction.
A second mounting table that stops at a first stop means that stops at a fixed position when pulled out, and a second stop means that can be pulled out in the same direction as the drawing direction of the second mounting table and that stops at a fixed position when pulled out A third mounting table for
By mounting the fixing device on the mounting table, the fixing device can be safely and reliably pulled out of the image forming apparatus, and jam processing and maintenance can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing the overall configuration of a fixing device of the present invention.

FIG. 2 is a perspective view showing a pressure bonding mechanism of a pressure bonding roller in the fixing device of the present invention.

FIG. 3 is a side view showing the overall configuration of the fixing device of the present invention.

FIG. 4 is a front view showing a stopped state of a separation claw provided in an opening device in the fixing device of the present invention.

FIG. 5 is a perspective view showing a state in which the fixing device is placed on a mounting table in the fixing device of the present invention and pulled out.

FIG. 6 is a front view showing a pressure bonding mechanism of a pressure bonding roller in a conventional fixing device.

FIG. 7 is a front view showing a thermal fixing roller cleaning device in a conventional fixing device.

[Explanation of symbols]

 101 Thermal Fixing Roller 102 Pressing Roller 103 Heater 104 First Swinging Member 105 Second Swinging Member 113, 115 Separation Claw 118 Release Lever 121 Opening Member 124 Cleaning Sheet 204 Cleaning Device 200 Fixing Device 1051 Locking Part 300 First Loading Table 307 Second mounting table 314 Third mounting table 400 Image forming apparatus

Claims (12)

[Claims] 1. A fixing device which presses and heats a pair of rotatably provided rollers to fix an image formed on a recording sheet between the rollers, wherein:
One roller whose rotational position is fixed, a first oscillating member whose one end is supported by a fulcrum and whose other end is urged by an elastic member toward the one roller, and a position near the fulcrum of the first oscillating member. The other roller is supported by a second swinging member that is connected by a connecting member that has a fulcrum near the elastic member position,
A fixing device, wherein the one roller whose rotational position is fixed and the other roller are brought into pressure contact with each other. 2. The fixing device according to claim 1, wherein the first rocking member and the second rocking member are configured as a pair, and are provided on both sides of the other roller, respectively. . 3. The fixing device according to claim 1, wherein the elastic member is a coil spring. 4. A fixing device which presses and heats a pair of rotatably provided rollers to fix an image formed on a recording sheet between the rollers, wherein:
One roller located on the upper side, a cleaning means provided on the one roller, for supplying a cleaning sheet, and a sheet winding means for receiving the sheet supplied by the sheet supplying means. A fixing device having an intermediate guide roller for guiding the sheet to the means, and feeding the sheet between the sheet feeding means and the intermediate guide roller from the one roller surface side. 5. The fixing device according to claim 4, wherein the sheet supply unit is provided at an upper position of the one roller, and the sheet is a cleaning sheet impregnated with silicon oil. 6. The fixing device according to claim 4, wherein the one of the rollers is a thermal fixing roller having a heating unit provided inside the roller. 7. A pair of rotatably mounted rollers are pressure-bonded and heated to fix the image formed on the recording paper between the rollers, and then the recording paper is discharged to the discharging side.
Further, in a fixing device having a separation claw that comes into contact with the pair of roller surfaces and separates the recording paper, an opening means that supports the separation claw at one end and rotatably pivots the other end, and the separation device. Of the pair of rollers, the claw is separated from one of the rollers and opened, and when the opening claw returns from the open position to the closed position, before the separation claw contacts the one roller, A fixing device comprising: a stopping unit that stops the opening unit. 8. The one roller for separating the separation claw is
The fixing device according to claim 7, wherein the fixing device is a thermal fixing roller having a heating means provided inside the roller. 9. The fixing device according to claim 7, wherein the opening means has a recording paper discharge guide means. 10. A mounting device of a fixing device, which presses and heats a pair of rollers rotatably provided in an image forming device and fixes and discharges an image formed on a recording paper between the rollers. A first mounting table fixed to the image forming apparatus, and a first mounting table that can be pulled out to the first mounting table in a direction perpendicular to the fixing and discharging direction, and that is stopped at a fixed position when withdrawn.
A second mounting table that is stopped by a stop means, a third mounting table that can be pulled out in the same direction as the pulling direction of the second mounting table, and that is stopped by a second stopping means that stops at a fixed position when the second mounting table is pulled out; 3. A mounting device for a fixing device, wherein the fixing device is mounted on a mounting table. 11. The third mounting table is pulled out, and the second
The second stopping means that stops at a fixed position of the mounting table is fixed by locking the protrusion formed on the second mounting table and the elastic locking member provided on the third mounting table, and the elastic locking member is the protrusion. 11. The mounting device of the fixing device according to claim 10, wherein the fixing state is released by further releasing. 12. The mounting device of the fixing device according to claim 10, wherein the third mounting table can be pulled out to a position outside the image forming device while the fixing device is mounted.