JP2008203401A - Fixing device and image forming apparatus - Google Patents

Fixing device and image forming apparatus Download PDF

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Publication number
JP2008203401A
JP2008203401A JP2007037613A JP2007037613A JP2008203401A JP 2008203401 A JP2008203401 A JP 2008203401A JP 2007037613 A JP2007037613 A JP 2007037613A JP 2007037613 A JP2007037613 A JP 2007037613A JP 2008203401 A JP2008203401 A JP 2008203401A
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sheet material
pressure belt
fixing device
surface
conductive layer
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JP2007037613A
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JP4935407B2 (en
Inventor
Tatsunori Izawa
Hitoshi Komuro
Norio Ogawara
Yasuto Okabayashi
達法 伊澤
仁 小室
則雄 小川原
康人 岡林
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Fuji Xerox Co Ltd
富士ゼロックス株式会社
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Abstract

An object of the present invention is to ensure wear resistance and slidability of a pressure member in contact with a fixing member and reduce electrostatic offset.
A sheet material 122 having a grounded conductive layer 136 is in contact with the back surface of a pressure belt 104 having an insulating layer on the surface. When the pressure belt 104 rotates and slides on the surface of the sheet material 122, a negative charge E1 is generated on the surface of the pressure belt 104, and a negative charge E2 is generated on the surface of the sheet material 122. Here, since the conductive layer 136 of the sheet material 122 is grounded, the negative charge E2 is grounded. As a result, the surface potential of the pressure belt 104 is lowered, and the repulsive force having the same polarity does not act on the negative toner T, so that electrostatic offset is reduced.
[Selection] Figure 4

Description

  The present invention relates to a fixing device and an image forming apparatus.

  2. Description of the Related Art Conventionally, in an image forming apparatus such as a printer or a copying machine that forms an image using an electrophotographic method, a toner image transferred onto a recording sheet is added to a fixing roller or a fixing belt having a heat source such as a halogen heater. A fixing device that melts and fixes toner by the action of heat and pressure through a nip formed by a pressure roller is used.

  For the surface of the fixing roller, the fixing belt, and the pressure roller, a fluorine-based insulating resin is used from the viewpoint of improving the toner releasability or sliding property.

  For this reason, the toner on the recording paper on which the image has been formed is likely to generate a so-called electrostatic offset in which the toner is offset to the fixing roller or fixing belt charged by an electrostatic phenomenon in the nip portion. Specifically, the electrostatic offset is such that the charging polarity on the pressure roller surface is the same as the charging polarity of the toner, and a repulsive force against the toner is generated in or near the nip, which affects the influence of some heat. This is a phenomenon in which toner that is difficult to receive flies to a fixing roller or a fixing belt.

  In order to reduce this electrostatic offset, there is a fixing device in which a conductive member is brought into contact with a fixing roller (see, for example, Patent Document 1).

  In the fixing device of Patent Document 1, an electrostatic offset is prevented by bringing a conductive and grounded heat-resistant sheet into contact with the fixing roller and setting the potential of the surface of the heat-resistant sheet to 0V.

  However, in the fixing device of Patent Document 1, it is necessary to mix a conductive agent such as carbon in order to make the heat-resistant sheet conductive, and this conductive agent reduces the wear resistance and slidability of the heat-resistant sheet. It was.

As described above, the surface layer of the member in contact with the fixing roller has a trade-off relationship that a conductive layer is preferable to prevent electrostatic offset, and an insulating layer is preferable to improve wear resistance and slidability. there were.
Reality 4-52770

  SUMMARY OF THE INVENTION An object of the present invention is to provide a fixing device and an image forming apparatus capable of ensuring wear resistance and sliding property of a pressure member in contact with a fixing member and reducing electrostatic offset.

  The fixing device according to claim 1 of the present invention is configured so that both ends thereof are rotatably supported, a fixing member that generates heat and fixes the developer on the recording medium, and rotates in contact with the surface of the fixing member, An endless pressure belt whose contact surface with the fixing member is an insulating layer, a sheet material that contacts the inner surface of the pressure belt and slides the pressure belt, and is disposed inside the sheet material, A fixing device having a pressure belt and a pressing member that presses the fixing member via the sheet material, wherein the sheet material has a grounded conductive layer.

  According to the above configuration, the developer on the recording medium is charged and is likely to scatter until it is fixed on the recording medium. Further, when the fixing member and the pressure belt slide to charge each surface, a repulsive force is generated against the developer, and a part of the developer on the recording medium is scattered on the fixing member, so-called electrostatic An offset phenomenon occurs.

  However, since the sheet material in contact with the pressure belt has a grounded conductive layer, the potential of the pressure belt surface is lowered.

  As a result, the electric field from the pressure belt to the fixing member is weakened, scattering of the charged developer is suppressed, and electrostatic offset is reduced.

  Moreover, since an insulating layer can be used as the surface layer of the pressure belt by forming a conductive layer on the sheet material, it is possible to ensure wear resistance and slidability of the pressure belt.

  In the fixing device according to a second aspect of the present invention, the sheet material includes a plurality of layers, and the conductive layer is disposed in at least one layer of the plurality of layers excluding a surface layer contacting the pressure belt. It is characterized by being.

  According to the above configuration, by configuring the sheet material with a plurality of layers, for example, the surface layer is made of a fluororesin layer with good releasability, and the slidability of the pressure belt is improved, and charges are released from the conductive layer. The potential of the sheet material can be lowered and the occurrence of electrostatic offset can be reduced.

  The fixing device according to a third aspect of the present invention is characterized in that a total of the thickness of the pressure belt and the thickness of the surface layer of the sheet material is 0.05 mm to 1.0 mm.

  According to the above configuration, by defining the total thickness of the pressure belt and the surface layer of the sheet material as 0.05 mm to 1.0 mm, the rigidity of the pressure belt and the sheet material is ensured and the pressure is applied. Electric charges generated in the belt are easily grounded from the conductive layer.

The fixing device according to a fourth aspect of the present invention is characterized in that the resistivity of the conductive layer is 1.0 × 10 3 to 1.0 × 10 8 (LogΩ / □).

  According to the above configuration, the lower the resistivity of the conductive layer of the sheet material, the easier it is to ground the charge of the pressure belt. However, if a large amount of carbon or the like is added to reduce the resistivity, the workability of the sheet material is poor. Become.

For this reason, by defining the resistivity of the conductive layer as 1.0 × 10 3 to 1.0 × 10 8 (LogΩ / □), the charge of the pressure belt is easily grounded, and the workability of the sheet material is also improved. Can be maintained.

  The fixing device according to a fifth aspect of the present invention is characterized in that a support member for supporting the sheet material is provided inside the sheet material, and the conductive layer is grounded via the support member.

  According to the above configuration, there is no need to separately provide a sheet material support member and a grounding member for grounding the conductive layer, so that the number of parts of the fixing device can be reduced and the cost can be reduced.

  An image forming apparatus according to a sixth aspect of the present invention is formed by the fixing device according to any one of the first to fifth aspects, an exposure unit that emits exposure light, and the exposure light of the exposure unit. A developing unit that exposes the latent image formed with a developer to form a developer image, a transfer unit that transfers the developer image that is exposed in the developing unit onto a recording medium, and the developing unit that transfers the development image. And a conveying unit that conveys the recording medium onto which the agent image has been transferred to the fixing device.

  According to the above configuration, since the electrostatic offset in the fixing device can be suppressed, the disturbance of the fixed image can be suppressed.

  According to the first aspect of the present invention, the electrostatic offset is reduced while ensuring the wear resistance and slidability of the pressure member in contact with the fixing member as compared with the case where the present configuration is not provided.

  The invention of claim 2 improves the slidability of the pressure belt as compared to the case where the present configuration is not provided.

  According to the third aspect of the present invention, the potential generated in the pressure belt can be kept low as compared with the case where this configuration is not provided.

  In the invention of claim 4, the workability of the sheet material is maintained as compared with the case where the present configuration is not provided.

  The invention of claim 5 can reduce the cost by reducing the number of parts of the fixing device as compared with the case where the present configuration is not provided.

  The invention of claim 6 can suppress the disturbance of the fixed image.

  Embodiments of a fixing device and an image forming apparatus of the present invention will be described with reference to the drawings.

  FIG. 1 shows a printer 10 as an image forming apparatus.

  In the printer 10, the optical scanning device 54 is fixed to the housing 12 constituting the main body of the printer 10, and control for controlling the operation of each part of the optical scanning device 54 and the printer 10 at a position adjacent to the optical scanning device 54. A unit 50 is provided.

  The optical scanning device 54 scans a light beam emitted from a light source (not shown) with a rotating polygon mirror (polygon mirror), reflects it with a plurality of optical components such as a reflection mirror, and produces yellow (Y), magenta (M), Light beams 60Y, 60M, 60C, and 60K corresponding to cyan (C) and black (K) toners are emitted.

  The light beams 60Y, 60M, 60C, and 60K are guided to the corresponding photosensitive drums 20Y, 20M, 20C, and 20K, respectively.

  A paper tray 14 for storing the recording paper P is provided below the printer 10. A pair of registration rollers 16 for adjusting the position of the leading end of the recording paper P is provided above the paper tray 14.

  An image forming unit 18 is provided at the center of the printer 10. The image forming unit 18 includes the above-described four photosensitive drums 20Y, 20M, 20C, and 20K, which are arranged in a vertical line.

  Charging rollers 22Y, 22M, 22C, and 22K that charge the surfaces of the photosensitive drums 20Y, 20M, 20C, and 20K are provided on the upstream side in the rotation direction of the photosensitive drums 20Y, 20M, 20C, and 20K.

  Further, on the downstream side in the rotation direction of the photoconductor drums 20Y, 20M, 20C, and 20K, developing units 24Y and 24M that develop the Y, M, C, and K toners on the photoconductors 20Y, 20M, 20C, and 20K, respectively. , 24C, 24K are provided.

  On the other hand, the first intermediate transfer member 26 is in contact with the photosensitive drums 20Y and 20M, and the second intermediate transfer member 28 is in contact with the photosensitive drums 20C and 20K. The third intermediate transfer member 30 is in contact with the first intermediate transfer member 26 and the second intermediate transfer member 28.

  A transfer roller 32 is provided at a position facing the third intermediate transfer member 30. The recording paper P is conveyed between the transfer roller 32 and the third intermediate transfer body 30, and the toner image on the third intermediate transfer body 30 is transferred to the recording paper P.

  A fixing device 100 is provided downstream of the paper conveyance path 34 through which the recording paper P is conveyed. The fixing device 100 includes a fixing roller 102 and a pressure belt 104 in a housing 106, and heats and presses the recording paper P to fix the toner image on the recording paper P.

  The recording paper P on which the toner image is fixed is discharged to a tray 38 provided on the upper portion of the printer 10 by a paper transport roller 36.

  Here, image formation of the printer 10 will be described.

  When image formation is started, the surfaces of the photosensitive drums 20Y to 20K are uniformly charged by the charging rollers 22Y to 22K.

  Light beams 60Y to 60K corresponding to the output image are irradiated from the optical scanning device 54 onto the surfaces of the charged photosensitive drums 20Y to 20K, and electrostatic latent images corresponding to the respective color separation images are formed on the photosensitive drums 20Y to 20K. Is formed.

  The developing devices 24Y to 24K selectively apply toners of respective colors, that is, Y to K, to the electrostatic latent images, and Y to K toner images are formed on the photosensitive drums 20Y to 20K.

  Thereafter, the magenta toner image is primarily transferred from the magenta photosensitive drum 20M to the first intermediate transfer member 26. A yellow toner image is primarily transferred from the yellow photosensitive drum 20 </ b> Y to the first intermediate transfer member 26, and is superimposed on the magenta toner image on the first intermediate transfer member 26.

  On the other hand, similarly, a black toner image is primarily transferred from the black photosensitive drum 20K to the second intermediate transfer member 28. Further, a cyan toner image is primarily transferred from the cyan photosensitive drum 20 </ b> C to the second intermediate transfer member 28, and is superimposed on the black toner image on the second intermediate transfer member 28.

  The magenta and yellow toner images primarily transferred to the first intermediate transfer member 26 are secondarily transferred to the third intermediate transfer member 30. On the other hand, the black and cyan toner images primarily transferred to the second intermediate transfer member 28 are also secondarily transferred to the third intermediate transfer member 30.

  Here, the magenta and yellow toner images that have been secondarily transferred first, and the cyan and black toner images are superimposed, and a color (three colors) and black full-color toner images are formed on the third intermediate transfer member 30. Is done.

  The secondary color transferred full-color toner image reaches the nip portion between the third intermediate transfer member 30 and the transfer roller 32. In synchronization with the timing, the recording paper P is conveyed from the registration roller 16 to the nip portion, and a full-color toner image is thirdarily transferred (final transfer) onto the recording paper P.

  Thereafter, the recording paper P is sent to the fixing device 100 and passes through the nip portion between the fixing roller 102 and the pressure belt 104. At that time, the full color toner image is fixed on the recording paper P by the action of heat and pressure applied from the fixing roller 102 and the pressure belt 104. After fixing, the recording paper P is discharged to the tray 38 by the paper transport roller 36, and the formation of the full color image on the recording paper P is completed.

  Next, the fixing device 100 according to the present embodiment will be described.

  As shown in FIG. 2, the fixing device 100 includes a housing 106 in which an opening for entering or discharging the recording paper P is formed.

  A fixing roller 102 is provided inside the housing 106. The fixing roller 102 has a halogen heater 108 as a heat source at the center, and the halogen heater 108 generates heat by an energizing means (not shown). Further, both ends of the halogen heater 108 are supported by support means (not shown).

  Around the halogen heater 108, a cored bar 110 formed in a cylindrical shape with a metal such as aluminum or SUS is supported by support means (not shown) and can be rotated by driving means such as a motor and a gear. .

  An outer peripheral surface of the core metal 110 is covered with an elastic layer 112 made of silicon rubber or the like. The outer peripheral surface of the elastic layer 112 is made of a fluorine-based resin such as PFA or PTFE, and has a good release property and is covered with an insulating release layer 114.

  On the other hand, an endless pressure belt 104 is in contact with the fixing roller 102. The pressure belt 104 is rotatably supported by support means (not shown).

  A support member 116 made of a conductive metal such as aluminum or SUS is disposed inside the pressure belt 104. A convex portion 118 and a concave portion 120 are formed on the support member 116. Further, the convex portion 118 of the support member 116 is grounded via a conducting wire.

  A pressing pad 124 made of urethane rubber or sponge or the like is bonded and fixed to the recess 120 of the support member 116.

  A sheet material 122 is wound around the surface of the support member 116 and bonded and fixed. The sheet material 122 is disposed along the inner periphery of the pressure belt 104 and is in contact with the inner surface of the pressure belt 104.

  Here, the pressing belt 104, the support member 116, the sheet material 122, and the pressing pad 124 are integrally pressed against the surface of the fixing roller 102 by pressing means such as a spring (not shown). As a result, the pressing pad 124 presses the fixing roller via the sheet material 122 and the pressure belt 104, and the fixing roller 102 and the pressure belt 104 come into contact with each other in a predetermined area to form the nip portion 126. .

  A separation claw 128 for preventing the recording paper P from being wrapped around the surface of the fixing roll 102 is fixed near the exit side of the recording paper P (not shown) in the nip portion 126.

  Next, the layer configuration of the pressure belt 104 and the sheet material 122 will be described.

  As shown in FIG. 3, the pressure belt 104 is composed of a base layer 130, an elastic layer 132, and a release layer 134 from the inside to the outside, and these are laminated and integrated.

  The base layer 130 serves as a base for maintaining the strength of the pressure belt 104 and is made of a polyimide resin.

  The elastic layer 132 is preferably silicon rubber or fluorine rubber from the viewpoint of obtaining excellent elasticity and heat resistance, and in the present embodiment, silicon rubber is used.

  The release layer 134 is an insulating layer made of a fluororesin or the like, and in this embodiment, PFA (tetrafluoroethylene / perfluoroalkoxyethylene copolymer resin) is used.

  On the other hand, the sheet material 122 includes a conductive layer 136, a base layer 138, and a sliding layer 140 from the inside to the outside, and these are laminated and integrated.

The conductive layer 136 is formed by mixing fluorocarbon resin with carbon powder. The lower the resistivity of the conductive layer 136, the lower the potential generated in the pressure belt 104. However, if a large amount of conductive agent such as carbon is added to lower the resistivity, the workability of the sheet material 122 is poor. Become. For this reason, it is preferable that the resistance value of the conductive layer 136 is 1.0 × 10 3 to 1.0 × 10 8 (LogΩ / □).

  The base layer 138 serves as a base for maintaining the strength of the sheet material 122, and is configured by impregnating glass fiber with PTFE. Carbon may be impregnated to make it conductive.

  The sliding layer 140 is made of a fluorine-based resin such as PFA or PTFE. In this embodiment, PFA (tetrafluoroethylene / perfluoroalkoxyethylene copolymer resin) is used. Thus, since the sheet material 122 has the sliding layer 140, when the pressure belt 104 rotates, the frictional force (load) between the pressure belt 104 and the sheet material 122 decreases, and the pressure belt 104 slides. Improves.

  Here, the conductive layer 136 is in contact with the support member 116 described above, and is grounded via the support member 116.

  The total thickness of the pressure belt 104 and the thickness of the sliding layer 140 of the sheet material 122 is 0.05 mm to 1.0 mm from the viewpoint of ensuring the rigidity of the pressure belt 104 and the sheet material 122. Is preferred.

  Next, the operation of the embodiment of the present invention will be described.

  As shown in FIG. 1, the recording paper P on which the toner image is formed is conveyed to the fixing device 100 through the image forming process described above. Since the toner is made of a resin such as polyester and has a negative chargeability, the toner is negatively charged by contact such as stirring during development.

  Subsequently, as shown in FIG. 4 b, the conveyed recording paper P is nipped and conveyed by the fixing roller 102 and the pressure belt 104, and the toner T is fixed to the recording paper P.

  Here, as a comparative example with the present embodiment, as shown in FIG. 4A, a sheet material 142 composed only of an insulating layer (fluororesin layer) is in contact with the inner peripheral surface of the pressure belt 104. explain.

  In this case, when the pressure belt 104 rotates and slides on the surface of the sheet material 142, a negative charge E 1 is generated on the surface of the pressure belt 104 due to contact friction with the fixing roller 102, and the surface of the sheet material 142. , A negative charge E2 is generated by contact friction with the pressure belt 104.

  Since the sheet material 142 is composed only of an insulating layer and is not grounded, negative charges E1 and E2 are accumulated, and the surface potential V1 of the pressure belt 104 becomes a high negative potential.

  Therefore, a repulsive force having the same polarity acts on the negative polarity toner T, and a part of the toner T on the recording paper P is scattered and adhered to the surface of the fixing roller 102.

  On the other hand, in this embodiment, when the pressure belt 104 rotates and slides on the surface of the sheet material 122, a negative charge E1 is generated on the surface of the pressure belt 104 due to contact friction with the fixing roller 102, and the sheet material. A negative charge E <b> 2 is generated on the surface 122 by contact friction with the pressure belt 104.

  However, since the sheet material 122 is grounded via the conductive layer 136 (see FIG. 3) and the support member 116 (see FIG. 2), the negative charge E2 is grounded.

  Here, the surface potential V2 of the pressure belt 104 changes in proportion to the distance from the surface of the pressure belt 104 to the ground (earth). In the present embodiment, the surface potential V2 is grounded from the surface of the pressure belt 104. Is shorter (closer) than the comparative example of FIG. 4a, the absolute value of the surface potential V2 is reduced.

  As a result, the surface potential V2 of the pressure belt 104 decreases to near 0 V, and the repulsive force having the same polarity does not act on the negative polarity toner T, so that the toner T remains on the recording paper P and is fixed.

  In this way, the electrostatic offset of the toner T is reduced.

  Next, the measurement result of the surface potential of the pressure belt 104 and the evaluation result of the electrostatic offset level of the toner T will be described.

  FIG. 5 is a graph obtained by measuring the surface potential of the pressure belt 104 when the distance from the surface of the pressure belt 104 to the ground is changed.

  As shown in FIG. 5, when the distance from the surface of the pressure belt 104 to the ground is 1000 μm, the surface potential of the pressure belt 104 is −1000 V, and when the distance is 50 μm, the surface potential is −30 V. This shows that the absolute value of the surface potential of the pressure belt 104 decreases as the distance from the surface of the pressure belt 104 to the ground is shorter.

  FIG. 6A is a graph evaluating the electrostatic offset level of the toner T when the distance from the surface of the pressure belt 104 to the ground (earth) is changed. As for the electrostatic offset level of the toner T, the amount of the toner T adhering to the surface of the fixing roller 102 is confirmed with a visual level, and a toner with a small amount of adhesion is evaluated as “good”.

  As shown in FIG. 6a, the offset level is improved as the distance from the surface of the pressure belt 104 to the ground is shortened from 2000 μm to 1000 μm and 50 μm.

  On the other hand, FIG. 6B is a graph evaluating the electrostatic offset level of the toner T when the resistivity of the conductive layer 136 (see FIG. 3) of the sheet material 122 is changed. Note that the evaluation of the electrostatic offset level of the toner T is the same as that described above, and a description thereof will be omitted.

As shown in FIG. 6b, the offset level is improved as the resistivity of the conductive layer 136 is decreased from 1.0 × 10 13 (LogΩ / □) to 1.0 × 10 3 (LogΩ / □).

  In addition, this invention is not limited to said embodiment.

  The printer 10 may use a liquid developer as well as a dry electrophotographic method using a solid developer (toner).

  The fixing roller 102 may be an endless fixing belt. Further, when the fixing belt is used, a fixing belt that generates heat by an electromagnetic induction heating method may be used without using the halogen heater 108.

  The toner T, the pressure belt 104, and the sheet material 122 may not be negatively charged but may be positively charged.

  In addition to the three-layer structure of the conductive layer 136, the base layer 138, and the sliding layer 140, the sheet material 122 has a two-layer structure including the conductive layer 136 and the sliding layer 140, and improves the slidability of the conductive layer 136. Only the conductive layer 136 may be provided, or a protective layer for each layer may be provided, or a single or a plurality of layers may be used.

  In addition to using the support member 122, the sheet material 122 may be grounded by providing a terminal member that is in contact with the back surface of the end portion (conductive layer 136) of the sheet material 122 and grounding the sheet material 122 via the terminal member.

  The contact area between the sheet material 122 and the pressure belt 104 may have a width substantially equal to the width of the nip portion 126.

1 is an overall view of an image forming apparatus according to an embodiment of the present invention. 1 is a cross-sectional view of a fixing device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a fixing belt and a sheet material according to an embodiment of the present invention. (A) It is the schematic diagram which showed the electrostatic offset state. FIG. 5B is a schematic diagram illustrating a toner offset state in the fixing device according to the exemplary embodiment of the present invention. It is the graph which showed the relationship between the distance from the surface of the pressurization belt which concerns on embodiment of this invention to the earth, and pressurization belt surface potential. (A) It is the graph which showed the relationship between the distance from the surface of the pressure belt which concerns on embodiment of this invention to the earth | ground, and the offset level of a toner. (B) It is the graph which showed the relationship between the resistivity of the conductive layer of the sheet | seat material which concerns on embodiment of this invention, and the offset level of a toner.

Explanation of symbols

10 Printer (image forming device)
18 Image forming unit (developing part)
32 Transfer roller (transfer section)
34 Paper transport path (transport section)
54 Optical scanning device (exposure unit)
100 Fixing device (fixing device)
102 Fixing roller (fixing member)
104 Pressure belt (Pressure belt)
116 Support member (support member)
122 Sheet material (sheet material)
124 Press pad (press member)
134 Release layer (insulating layer)
136 Conductive layer (conductive layer)
140 Smooth layer (surface layer)
P Recording paper (recording medium)
T Toner (Developer)

Claims (6)

  1. A fixing member that is rotatably supported at both ends, and generates heat to fix the developer on the recording medium;
    Rotating in contact with the surface of the fixing member, and an endless pressure belt whose contact surface with the fixing member is an insulating layer;
    A sheet material that contacts the inner surface of the pressure belt and slides the pressure belt;
    A pressing member disposed inside the sheet material and pressing the fixing member via the pressure belt and the sheet material;
    In a fixing device having
    The fixing device, wherein the sheet material includes a grounded conductive layer.
  2.   The said sheet | seat material is comprised by several layers, The said conductive layer is arrange | positioned at least 1 layer except the surface layer which contacts the said pressurization belt among these several layers, It is characterized by the above-mentioned. The fixing device described.
  3.   The fixing device according to claim 2, wherein a total thickness of the pressure belt and a thickness of the surface layer of the sheet material is 0.05 mm to 1.0 mm.
  4. 4. The fixing device according to claim 1, wherein a resistivity of the conductive layer is 1.0 × 10 3 to 1.0 × 10 8 (LogΩ / □). 5. .
  5.   The support member which supports the said sheet material is provided inside the said sheet material, The said conductive layer is earth | grounded via the said support member, The any one of Claims 1-4 characterized by the above-mentioned. Fixing device.
  6. A fixing device according to any one of claims 1 to 5,
    An exposure unit that emits exposure light; and
    A developing unit that exposes the latent image formed by the exposure light of the exposure unit with a developer to form a developer image;
    A transfer unit that transfers the developer image made visible in the developing unit onto a recording medium;
    A transport unit that transports the recording medium onto which the developer image has been transferred in the transfer unit to the fixing device;
    An image forming apparatus comprising:

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
JP2012189819A (en) * 2011-03-10 2012-10-04 Ricoh Co Ltd Fixing device and image formation apparatus
US8385805B2 (en) 2010-02-25 2013-02-26 Fuji Xerox Co., Ltd. Fixing member, fixing apparatus and image forming apparatus

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JP2005084160A (en) * 2003-09-05 2005-03-31 Fuji Xerox Co Ltd Sliding member and fixing device
JP2006133653A (en) * 2004-11-09 2006-05-25 Kurabo Ind Ltd Slide member for device for fixing electrophotographic image
JP2006267410A (en) * 2005-03-23 2006-10-05 Fuji Xerox Co Ltd Fixing device, sheet member, and image forming apparatus

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JPH1063128A (en) * 1996-08-16 1998-03-06 Fuji Xerox Co Ltd Fixing device
JPH11327335A (en) * 1998-05-11 1999-11-26 Konica Corp Image forming device
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JP2001051535A (en) * 1999-08-06 2001-02-23 Nitto Denko Corp Fixing belt
JP2004206105A (en) * 2002-12-12 2004-07-22 Fuji Xerox Co Ltd Sliding member for electrophotographic apparatus and fixing device using the same
JP2005074940A (en) * 2003-09-03 2005-03-24 Nitto Denko Corp Combined tubular body
JP2005084160A (en) * 2003-09-05 2005-03-31 Fuji Xerox Co Ltd Sliding member and fixing device
JP2006133653A (en) * 2004-11-09 2006-05-25 Kurabo Ind Ltd Slide member for device for fixing electrophotographic image
JP2006267410A (en) * 2005-03-23 2006-10-05 Fuji Xerox Co Ltd Fixing device, sheet member, and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8385805B2 (en) 2010-02-25 2013-02-26 Fuji Xerox Co., Ltd. Fixing member, fixing apparatus and image forming apparatus
JP2012189819A (en) * 2011-03-10 2012-10-04 Ricoh Co Ltd Fixing device and image formation apparatus

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