WO2022163702A1 - 定着パッド - Google Patents

定着パッド Download PDF

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Publication number
WO2022163702A1
WO2022163702A1 PCT/JP2022/002894 JP2022002894W WO2022163702A1 WO 2022163702 A1 WO2022163702 A1 WO 2022163702A1 JP 2022002894 W JP2022002894 W JP 2022002894W WO 2022163702 A1 WO2022163702 A1 WO 2022163702A1
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WO
WIPO (PCT)
Prior art keywords
base material
fixing pad
sliding layer
image
developer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/002894
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English (en)
French (fr)
Japanese (ja)
Inventor
幸宗 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Polymer Co Ltd
Priority to CN202280012190.1A priority Critical patent/CN116802567B/zh
Priority to JP2022578445A priority patent/JPWO2022163702A1/ja
Publication of WO2022163702A1 publication Critical patent/WO2022163702A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat

Definitions

  • the present invention relates to a fixing pad.
  • Patent Literature 1 discloses a structure in which a fabric made of fluorine fiber or the like is wound on the surface of a sliding member parallel to the sliding direction.
  • the sliding surface of the sliding member is preferably smooth from the viewpoint of thermal conductivity and low friction with the fixing belt.
  • Patent Document 1 since the fabric is wound and fixed in the sliding direction of the sliding member, a smooth surface cannot be maintained due to deviation of the fabric, and there is concern that image quality may deteriorate over time.
  • the present invention has a substrate and a sliding layer provided on the main surface of the substrate, the sliding layer being a woven or knitted fabric containing fluorine fibers and/or glass fibers,
  • the fixing pad has a sliding surface with a surface roughness Ra of 12.0 ⁇ m or less.
  • the thickness of the sliding layer is preferably 300 ⁇ m or more and 1000 ⁇ m or less.
  • the base material and the sliding layer are preferably adhered with an adhesive.
  • the sliding layer is preferably provided over the entire main surface of the substrate.
  • the cross section of the substrate in the transverse direction is preferably U-shaped or arc-shaped.
  • the fixing pad of the present invention has a smooth sliding surface and can satisfactorily fix the toner.
  • FIG. 1 is a schematic cross-sectional view showing one embodiment of a fixing pad of the present invention
  • FIG. 1 is a schematic cross-sectional view of a toner fixing device provided with a fixing pad of the present invention
  • FIG. 4 is a schematic cross-sectional view showing another embodiment of the fixing pad of the present invention
  • 1 is a schematic cross-sectional view showing an example of an image forming apparatus equipped with a fixing pad of the present invention
  • a fixing pad according to one embodiment of the present invention is the fixing pad 10 disposed facing the pressure roller 23 in the toner fixing device 20 (see FIG. 2).
  • the fixing pad 10 will be described with reference to FIG.
  • FIG. 1 is a cross-sectional view of the fixing pad 10 in a direction perpendicular to the longitudinal direction Y (lateral direction X).
  • the fixing pad 10 includes a substrate 11 and a sliding layer 13 provided on the major surface 11 a of the substrate 11 .
  • the base material 11 and the sliding layer 13 are adhered with an adhesive 12 .
  • a main surface 11 a of the base material 11 is a surface facing the pressure roller 23 . Details of each configuration will be described below.
  • the base material 11 aluminum (including aluminum alloys), copper, iron, stainless steel, brass, sulfur free-cutting steel (SUM), and nickel- or zinc-plated surfaces of these metals can be used. . From the viewpoint of thermal conductivity, aluminum and copper are preferred.
  • the base material 11 may be composed of one material, or may be composed of two or more materials. Moreover, the base material 11 may have a laminated structure.
  • a primer layer may be provided between the substrate 11 and the adhesive 12 in order to improve the adhesiveness between the adhesive 12 and the substrate 11 .
  • the cross section of the base material 11 in the lateral direction X may be U-shaped, or may be arc-shaped as shown in FIG.
  • the substrate 11 shown in FIG. 1 has a flat shape in the region forming a nip with the pressure roller 23 (see FIG. 2), but it may have an arc shape. Since the cross section of the base material 11 in the lateral direction X is U-shaped or arc-shaped, the fixing belt 21 can smoothly slide without being caught on the corners of the fixing pad 10 .
  • the length of the base material 11 in the longitudinal direction Y is not particularly limited, and may be appropriately adjusted according to the form of the installed image forming apparatus.
  • the length of the substrate 11 in the longitudinal direction Y is preferably 200 mm or more and 400 mm or less, more preferably 250 mm or more and 370 mm or less.
  • the transverse direction X of the base material 11 is not particularly limited, and may be adjusted as appropriate according to the form of the installed image forming apparatus.
  • the transverse direction X of the substrate 11 is preferably 8 mm or more and 30 mm or less, more preferably 15 mm or more and 25 mm or less.
  • the thickness of the base material 11 is preferably 0.2 mm or more and 1.0 mm or less, and more preferably 0.3 mm or more and 0.6 mm or less.
  • the adhesive 12 is preferably a one-liquid curable rubber from the viewpoint of good adhesion between the sliding layer 13 and the base material 11 .
  • One-component liquid silicone rubber and one-component silicone RTV rubber are more preferable.
  • Commercially available products include KE-1880 (manufactured by Shin-Etsu Chemical Co., Ltd.), KE-1833 (manufactured by Shin-Etsu Chemical Co., Ltd.), and TSE322 (manufactured by Momentive Japan).
  • Bonding between the base material 11 and the sliding layer 13 can be performed, for example, as follows. First, the main surface 11a of the substrate 11 is cleaned with alcohol or the like. Next, the woven or knitted fabric, which will be described later and constitutes the sliding layer 13, is cut larger than the size of the base material 11, and placed on a workbench. do. Then, the woven or knitted fabric coated with the adhesive 12 and the base material 11 arranged thereon are placed in a mold of the same type as the base material 11, and the adhesive 12 is cured while being heated and pressed. . Finally, the excess woven or knitted fabric is cut off.
  • the sliding layer 13 is a woven or knitted fabric containing fluorine fiber and/or glass fiber.
  • a woven fabric is preferable from the viewpoint of maintaining smoothness over a long period of time. Plain weave, twill weave, satin weave and the like can be used as the weaving method of the fluorine fiber fabric.
  • fluorine fibers polytetrafluoroethylene fibers and polyfluoroethylene fibers are preferable.
  • Polytetrafluoroethylene materials include homopolymers of tetrafluoroethylene or copolymers in which 90 mol % or more, preferably 95 mol % or more of the total is tetrafluoroethylene.
  • Examples of monomers copolymerizable with tetrafluoroethylene include vinyl fluoride compounds such as trifluoroethylene, trifluorochloroethylene, tetrafluoropropylene and hexafluoropropylene, and further propylene, ethylene, isobutylene, styrene, acrylonitrile and the like. Examples include vinyl compounds. From the viewpoint of reducing the friction of the sliding surface, the content of tetrafluoroethylene units is preferably large, and a homopolymer is more preferable.
  • Fluorine fibers may be monofilaments, multifilaments, or spun yarns.
  • the total fineness of the monofilament or multifilament fibers is preferably 50 to 2000 dtex, more preferably 100 to 1000 dtex.
  • the strength of the fibers increases and the resistance to yarn breakage increases. If it is 2000 dtex or less, the unevenness of the surface when the fibers are arranged in parallel is small, so there is no influence on the slidability, and the flexibility is high, so it can easily conform to the shape of the base material 11 .
  • Glass fibers can be either monofilaments made up of one filament or multifilaments made up of multiple filaments.
  • the total fineness of the monofilament or multifilament fibers constituting the glass fiber is preferably 50 to 800 dtex, more preferably 100 to 300 dtex.
  • the strength of the fibers is high, and thread breakage during weaving can be reduced, thereby improving process passability.
  • it is 800 dtex or less, the thickness of the woven or knitted fabric is thin, and the long-term durability is improved.
  • the surface roughness Ra of the sliding surface 13a of the sliding layer 13 is preferably 12 ⁇ m or less, more preferably 0.5 ⁇ m or more and 12.0 ⁇ m or less, and 0.5 ⁇ m or more and 10.0 ⁇ m or less. is more preferred.
  • the method of measuring the surface roughness Ra shall be that in Examples described later.
  • the surface roughness Ra of the sliding surface 13a is within the above range, the sliding surface 13a can be made smooth even though it is a woven or knitted fabric, and heat can be conducted well to the fixing belt. , a high-quality image can be obtained.
  • the sliding layer 13 is preferably formed by hot-pressing or cold-pressing the woven or knitted fabric.
  • Hot press processing can be performed with a known hot press machine.
  • the heating temperature depends on the material of the woven or knitted fabric, it is preferably 150° C. or higher and 200° C. or lower.
  • the pressure depends on the material and desired thickness of the woven or knitted fabric, it is preferably 2 MPa or more and 6 MPa or less.
  • the thickness of the sliding layer 13 is preferably 300 ⁇ m or more and 1000 ⁇ m or less, more preferably 400 ⁇ m or more and 700 ⁇ m or less.
  • the sliding layer 13 is formed over the main surface 11 a of the base material 11 facing the pressure roller 23 . Since the sliding layer 13 is provided on the entire main surface 11 a , the fixing belt 21 can smoothly slide without being caught by the edge of the woven or knitted fabric forming the sliding layer 13 .
  • the sliding layer 13 may not be provided on the entire main surface 11a, and may be provided at least in a region where a desired nip width with the pressure roller 23 can be secured.
  • a primer Before applying the adhesive 12, a primer may be applied to the main surface 11a of the substrate 11 to which the sliding layer 13 is to be adhered to form a primer layer. Thereby, the adhesion between the base material 11 and the adhesive 12 becomes stronger.
  • primers include No. 4 (manufactured by Shin-Etsu Chemical Co., Ltd.) and No. 33 (manufactured by Shin-Etsu Chemical Co., Ltd.).
  • the sliding layer 13 is adhered with an adhesive, so that a smooth sliding surface 13a can be obtained. Obtainable.
  • the fixing pad 10 of the present invention is used in a toner fixing device 20 of an image forming apparatus, as shown in FIG.
  • the fixing pad 10 is arranged to face the pressure roller 23 and is pressed against each other with a predetermined nip width.
  • the pressure roller 23 has an elastic body 25 and a coating layer 26 on the outer periphery of the shaft 24, and is driven to rotate by driving means (not shown).
  • a fixing belt 21 is wound around the fixing pad 10 , and the rotation of the pressure roller 23 causes the fixing belt 21 to rotate.
  • the fixing pad 10 is connected to a heating device 22 , and the sliding surface 13 a of the fixing pad 10 is heated by the heating device 22 , thereby heating the fixing belt 21 .
  • the pressure roller is also heated by heating means (not shown). While the fixing belt 21 and the pressure roller 23 are heated, when the recording medium 36 with the developer 42 transferred thereon is transported and brought into pressure contact between the fixing belt 21 and the pressure roller 23, the developer 42 is transferred. It is fixed on the recording medium 36 by applying heat
  • the image forming apparatus 30 includes a rotatable image carrier 31 on which an electrostatic latent image is formed, e.g. 33, a developing means 40, a transfer roller 34, an image carrier cleaning roller 35, and a toner fixing device 20 on the downstream side of the recording medium 36 in the conveying direction.
  • the toner fixing device 20 includes the pressure roller, the fixing pad 10 arranged to face the pressure roller, the heating device 22, and the fixing belt (endless belt) 21, as described above.
  • a heating device (not shown) is also connected to the pressure roller 23 .
  • the developing means 40 includes a developer accommodating portion 41, a developer carrier 44 that supplies the developer 42 to the image carrier 31, a developer supply means 43 that supplies the developer 42 to the developer carrier 44, and a developer. and a developer regulating member 45 that charges the developer 42 .
  • the developer 42 may be a dry developer or a wet developer as long as it is a one-component developer, and may be a non-magnetic developer or a magnetic developer.
  • the toner fixing device 20 fixes the developer 42 (electrostatic latent image) transferred to the recording medium 36 . Equipped with a heating device.
  • the toner fixing device 20 is arranged in a housing 27 having an opening 28 through which a recording medium 36 passes. 23, and the fixing pad 10 and the pressure roller 23 are rotatably supported through a fixing belt 21 so as to abut or press against each other.
  • the image forming apparatus 30 operates as follows. First, in the image forming apparatus 30 , the charging roller 32 uniformly charges the image carrier 31 , and the exposure means 33 forms an electrostatic latent image on the surface of the image carrier 31 . Next, developer 42 is supplied from developing means 40 to image carrier 31 to develop the electrostatic latent image. The developer image is then transferred onto a recording medium 36 conveyed between the image carrier 31 and transfer roller 34 . This recording medium 36 is conveyed to the toner fixing device 20, and the developer image is fixed on the recording medium 36 as a permanent image. An image can be formed on the recording medium 36 in this way. After the developer image has been transferred, the image carrier 31 is cleaned by an image carrier cleaning roller 35 disposed on the upstream side of the charging roller 32 to remove the developer adhering to or remaining on the outer peripheral surface of the image carrier 31 .
  • the image forming apparatus 30 of the present embodiment is an electrophotographic image forming apparatus, but in the present invention, the image forming apparatus is not limited to an electrophotographic image forming apparatus, for example, an electrostatic image forming apparatus. may be Further, the image forming apparatus 30 is a monochrome image forming apparatus that stores only a single-color developer 42 in the developing means 40, but in the present invention, the image forming apparatus is not limited to a monochrome image forming apparatus. A four-cycle type color image forming apparatus may be used in which the primary transfer of developer images carried on a bearing member is sequentially repeated onto an intermediate transfer member.
  • a color image forming apparatus for example, an image forming apparatus on an image carrier, a tandem type color image forming apparatus in which a plurality of image carriers provided with developing means for each color are arranged in series on an intermediate transfer member or a transfer/transport belt, and the like. is mentioned.
  • the image forming apparatus 30 is, for example, an image forming apparatus such as a copier, facsimile machine, or printer.
  • a one-component developer is advantageously used as the developer 42, but a two-component developer containing toner and a carrier such as iron or nickel can also be used. .
  • image forming apparatus 30 is not limited to the above-described embodiment, and various modifications are possible within the scope of achieving the object of the present invention.
  • image forming apparatuses include various image forming apparatuses, and an image forming apparatus capable of forming images at high speed is preferable.
  • Example 1 A fixing pad was made using the following materials.
  • Base material copper plate thickness 0.4mm
  • Fluorine fiber thickness 500 ⁇ m
  • Adhesive insulating adhesive (trade name “TSE322”, manufactured by Momentive Japan) An adhesive was applied onto a copper plate, and after pressing at 150° C. and 2.0 MPa for 3 minutes, fluorine fibers were put thereon and pressed at 150° C. and 10 MPa for 3 minutes.
  • Example 2 Example 3, Comparative Example 1 and Comparative Example 2
  • a fixing pad was produced in the same manner as in Example 1, except that the surface roughness of the sliding surface was as shown in Table 1.
  • the surface roughness Ra was measured using the following measuring equipment and conditions.
  • Measuring instrument Surface roughness shape measuring machine (model number: SURFCOM 1400D-3DF), manufactured by Tokyo Seimitsu Co., Ltd.
  • Parameter calculation standard JIS'01 standard Cutoff type: Gaussian Measurement length: 20.0 mm
  • Measurement speed 0.3mm/sec
  • L (left end), C (center), and R (right end) were measured in the longitudinal direction, and the average value was obtained. For L (left end) and R (right end), measurements were taken at points 10.0 mm inside from both ends, and at the central point in the width direction.
  • Toner and an OHP sheet (A4 size 297 mm x 210 mm) are stacked in this order on the sliding surface of the fixing pad, and the toner is melted under the conditions of 0.5 MPa, 200°C, and 20 seconds, and then cooled to room temperature to remove the solidified toner. , and an image was formed by transferring in a width of about 5 cm parallel to the short direction of the OHP sheet, and the image surface roughness and image surface waviness WCA of the formed image were measured by the following measuring methods.
  • Image surface roughness Ra The measurement conditions for the image surface roughness Ra are as follows.
  • Measuring instrument Surface roughness shape measuring machine (model number: SURFCOM 1400D-3DF, manufactured by Tokyo Seimitsu Co., Ltd.)
  • Parameter calculation standard JIS-'01 standard Cutoff type: Gaussian Measurement length: 20.0 mm
  • Measurement speed 0.3mm/sec Measurements were taken at three locations L (left edge), C (center), and R (right edge) in the lateral direction of the image surface, and the average value was obtained. For L (left end) and R (right end), measurements were taken at points 20 mm inside from both ends, and at the central point in the width direction.
  • Imaging surface waviness WCA The measurement conditions of the image surface waviness are as follows.
  • Measuring instrument Surface roughness shape measuring machine (model number: SURFCOM 1400D-3DF), manufactured by Tokyo Seimitsu Co., Ltd.
  • Parameter calculation standard JIS-'94 standard
  • Measurement type Filtered center line waviness measurement Cutoff type: Gaussian Cutoff wavelength: 0.25-8.0mm
  • Measurement length 16.0mm
  • Measurement speed 0.3mm/sec
  • Inclination Correction Least Square Straight Line Correction Measurements were taken at three points L (left edge), C (center), and R (right edge) in the lateral direction of the image surface, and the average value was obtained. For L (left end) and R (right end), measurements were taken at points 20 mm inside from both ends, and at the central point in the width direction.
  • the surface roughness Ra is 12 ⁇ m or less while having fluorine fibers, so that the toner can be uniformly fixed and a good image can be provided. .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
PCT/JP2022/002894 2021-01-28 2022-01-26 定着パッド Ceased WO2022163702A1 (ja)

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Application Number Priority Date Filing Date Title
CN202280012190.1A CN116802567B (zh) 2021-01-28 2022-01-26 定影垫
JP2022578445A JPWO2022163702A1 (https=) 2021-01-28 2022-01-26

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JP2021-012125 2021-01-28
JP2021012125 2021-01-28

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Citations (3)

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JP2008197317A (ja) * 2007-02-13 2008-08-28 Nitto Denko Corp 画像定着装置および摺動シート
JP2014145840A (ja) * 2013-01-28 2014-08-14 Fuji Xerox Co Ltd 定着装置用摺動部材、定着装置、及び画像形成装置
JP2018097346A (ja) * 2016-12-15 2018-06-21 コニカミノルタ株式会社 摺動部材、定着装置用摺動部材、定着装置および画像形成装置

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JP3789081B2 (ja) * 2000-05-18 2006-06-21 キヤノン株式会社 電子写真感光体及び電子写真装置
JP2004114447A (ja) * 2002-09-25 2004-04-15 Fuji Photo Film Co Ltd 画像形成又は画像定着材料の製造方法、画像形成又は画像定着材料、及び画像形成又は画像定着方法
JP2005062317A (ja) * 2003-08-08 2005-03-10 Canon Inc 像加熱装置
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JP2014145840A (ja) * 2013-01-28 2014-08-14 Fuji Xerox Co Ltd 定着装置用摺動部材、定着装置、及び画像形成装置
JP2018097346A (ja) * 2016-12-15 2018-06-21 コニカミノルタ株式会社 摺動部材、定着装置用摺動部材、定着装置および画像形成装置

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CN116802567B (zh) 2025-12-09
CN116802567A (zh) 2023-09-22
JPWO2022163702A1 (https=) 2022-08-04

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