WO1999000714A1 - Fixing apparatus - Google Patents
Fixing apparatus Download PDFInfo
- Publication number
- WO1999000714A1 WO1999000714A1 PCT/JP1998/002826 JP9802826W WO9900714A1 WO 1999000714 A1 WO1999000714 A1 WO 1999000714A1 JP 9802826 W JP9802826 W JP 9802826W WO 9900714 A1 WO9900714 A1 WO 9900714A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- fixing
- belt
- fixing device
- pressure roller
- Prior art date
Links
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
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
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- 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
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
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- 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
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
- G03G15/2021—Plurality of separate fixing and/or cooling areas or units, two step fixing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
- G03G2215/2025—Heating belt the fixing nip having a rotating belt support member opposing a pressure member
- G03G2215/2032—Heating belt the fixing nip having a rotating belt support member opposing a pressure member the belt further entrained around additional rotating belt support members
Definitions
- the present invention relates to a fixing device used in an image forming apparatus of an electronic type, for example, for melting and pressing unfixed toner on a recording medium and fixing the toner on the recording medium.
- a fixing device for an electronic image forming apparatus instead of a conventional heat roller fixing method, for example, as shown in FIG. 10 as a technique described in JP-A-6-318001, A belt fixing method in which a fixing belt B is stretched between the fixing roller R1 and the heating roller R3, and a pressure opening R2 for pressing the fixing roller R1 from below through the fixing belt B is provided. Accordingly, a technology that combines preheating of the recording medium D has been developed.
- the temperature of the nip portion between the pressurizing port R2 and the fixing belt B can be set low, and by using the fixing belt B having a small heat capacity, When the recording medium D passes through the nip portion, the temperature of the fixing belt B can be rapidly cooled.
- the cooling can increase the cohesive force of the toner separated from the fixing belt B at the outlet of the nib portion, and the increased cohesive force increases the releasability of the fixing belt B and the toner, thereby reducing the oil.
- a clear fixed image with no offset can be obtained even if only a small amount of oil is applied.
- the belt fixing system provides a fixing device in which the problems of both the releasability and the oil application, which cannot be solved by the conventional heating roller system, are solved at once.
- the fixing roller R 1, the pressure roller R 2, the heating and tension roller R 3, a fixing velvet B is stretched between the fixing roller R1 and the heating and tension roller R3.
- An oil application roller R 4 is disposed above the fixing belt B, and a guide plate G is disposed below the fixing belt B with a gap therebetween. The space between the lower portion of the fixing belt B and the guide plate G defines a preheating passage for the recording medium D.
- a heating source H is provided inside the heating and tension roller R3, and a heating source may be additionally provided inside the fixing roller R1 and the pressure roller R2.
- a thermistor S is provided in contact with the non-sheet passing portion of the fixing belt B.
- the driving roller for driving the fixing belt B to travel may be a roller that can rotate around a fixed axis.
- the pressure roller 2 is configured to rotationally drive the fixing roller R1 with which the pressure roller 2 rolls.
- the driving roller for driving the fixing belt B to travel is limited to only the fixing roller R1, for example, the driving force transmission path and the installation position of the driving source are restricted in design, and the design is restricted. May be impaired in the degree of freedom. For this reason, there is a demand for a drive mode that further improves the degree of freedom in design.
- an object of the present invention is to provide a fixing mechanism that can further improve the degree of freedom in design when designing a driving mechanism for driving and driving a fixing belt. It is to provide a device. Disclosure of the invention
- a fixing device includes a fixing roller, a pressure roller that is urged to be in rolling contact with the fixing roller, and an unfixed toner carried on a surface.
- a heating roller having a built-in heat source and a fixing roller disposed upstream of the fixing roller with respect to the conveying direction in which the sheet is conveyed.
- a heat source disposed apart from the fixing roller and the heating roller endlessly, receiving heat transfer from the heat source, and a rolling contact portion between the fixing roller and the pressure roller.
- the present invention is configured such that the pressure roller is movably attached at least along a direction intersecting the transport direction.
- the present invention is configured to further include an urging means for urging the pressure roller in a direction in which the pressure roller contacts the fixing roller.
- the driving means includes a driven gear coaxially fixed to the pressure roller, and a driving gear coupled to the driven gear. It is configured to be able to turn while maintaining the combined state with.
- the present invention is characterized in that the driving gear is rotatably supported around a predetermined fixed axis, and the driven gear is provided at a distal end of a revolving arm pivotally supported at a base end so as to be rotatable about the fixed axis. It is configured to be rotatably supported.
- the present invention is configured such that the fixing belt includes an endless base member formed of a heat transfer material, and a release layer coated on an outer peripheral surface of the base member. ing.
- the present invention is configured such that the base material is formed from a metal belt.
- the present invention is configured such that the base material is formed from a nickel electrode belt.
- the present invention is configured such that the base material is formed from a synthetic resin belt.
- the present invention is configured such that the synthetic resin belt has conductivity. Further, the present invention is configured such that the base material is formed from polyimide resin.
- the present invention is configured such that the polyimide resin has conductivity.
- the heat source is built in the heating roller, and the fixing belt is heated by the heating roller heated by the heat source.
- FIG. 1 is a front view schematically showing an entire configuration of an embodiment of a fixing device according to the present invention.
- FIG. 2 is a side view showing a heating roller used in the fixing device shown in FIG.
- FIG. 3 is a front view showing the mounting configuration of the pressure roller shown in FIG. 1
- FIG. 4 is a front view showing the configuration of the oil application roller used in the fixing device shown in FIG.
- FIG. 5 is a front view showing a configuration of a fixing belt, an oil application, and a cleaning mechanism for applying oil to the fixing belt, which is different from the configuration of the oil application roller shown in FIG.
- FIG. 6 is a front view showing a positional relationship between the guide plate and the fixing belt shown in FIG. 1
- FIG. 7 is a front view showing a configuration of the guide plate shown in FIG.
- FIG. 8 is a front view showing the positional relationship between the fixing roller and the pressure roller
- FIG. 9 is an enlarged front view showing a state near a nip portion in FIG. 8, and FIG. 10 is a front view schematically showing a configuration of a conventional fixing device.
- a fixing device 10 for an electronic image forming apparatus of this embodiment is fixed to a frame of an electronic image forming apparatus (not shown) as a housing structure.
- the housing 12 includes a base 14 directly fixed on the apparatus frame, and a pair of left and right fixedly mounted on the base 14 in a standing state. It is configured to include a mounting stay 16 and a top plate 18 that connects the upper portions of both mounting stays 16 to each other.
- the left direction indicated by the arrow in the figure is defined as the transport direction in which the unfixed sheet S is transported. That is, the mounting stays 16 described above are located on the left and right sides of the unfixed sheet S conveyed in the conveying direction, and are disposed so as to extend along the conveying direction.
- the fixing device 10 has a roller configuration, in which both fixing stays 16 are rotatably supported around their own central axis by two fixing stays 16, and two fixing stays 1.
- a pressure and driving roller (hereinafter simply referred to as a roller) that is supported under the fixing roller 22 so as to be able to move in a substantially vertical direction in a state capable of being pressed against the roller and to be rotatable around its own central axis.
- This is called a pressure roller.
- the two fixing stays 16 and 24 are disposed upstream of the fixing roller 22 with respect to the conveying direction of the unfixed sheet S, and are mounted movably along the conveying direction.
- the heating roller 28 is rotatably supported around its own central axis and includes a heat source 26 such as a halogen lamp.
- the fixing device 10 is provided with an endless fixing belt 32 wound around a fixing roller 22 and a heating roller 28, and a fixing belt A guide that guides the unfixed sheet S conveyed from the image forming mechanism via the mechanism toward the rolling contact portion (ep section) between the fixing belt 32 and the pressure roller 24. And a plate 34.
- a space between the fixing belt 32 and the guide plate 34 is defined as a preheating passage P through which the unfixed sheet S is conveyed while being preheated by the fixing belt 32.
- the fixing device 10 keeps the tension of the fixing belt 32 constant, applies silicone oil to the outer surface of the fixing belt 32, and
- the oil application roller 36 for cleaning the outer surface of 2 and the heating port roller 28 are biased away from the fixing roller 22 so that the fixing belt cooperates with the oil application roller 36.
- the biasing roller 3 4 and the pressure roller 24 are biased in a direction approaching the fixing roller 22 to apply a predetermined tension to the roller 2, and the pressure roller and the driving roller 24 are fixed to the fixing belt 3 2.
- the unfixed sheet S conveyed on the guide plate 34 further moves toward the rolling contact portion between the fixing belt 32 and the pressure roller 24.
- the toner is conveyed and inserted in a state where the transfer contact portion is pressed, the toner is thermocompression-bonded and fixed on the sheet.
- the sheet passing speed of the unfixed sheet S is set to 10 mm / sec to 500 mm // sec
- the gap of the preheating space P is set to 0.5 mm to 20 mm. mm
- the pre-heating time that passes only the distance between the center of the fixing roller 22 and the center of the heating roller 28 is 0.1 seconds to 4 seconds. Is set.
- the above-mentioned fixing roller 22 includes a core metal part 2 2A rotatably supported via a bearing in a circular first support shaft hole 16 A formed in the mounting stay 16.
- a roller main body 22B is provided coaxially around the cored bar section 22A and has a fixing belt 32 wound therearound.
- the roller outer diameter is set to 20 mm.
- the core metal part 22 A is formed of an iron shaft having a diameter of 12 mm.
- the roller body 22 B is made of a silicone rubber heat-resistant elastic body (specifically, a silicone rubber sponge with an ASKER C hardness of 30 degrees) attached to the outer periphery of the cored bar 22 A with a thickness of 4 mm. Is formed.
- the above-described pressure roller 24 is formed on the mounting stay 16, and rotates freely via a bearing in a second support shaft hole 16 B, which is an arc-shaped long hole extending substantially in the vertical direction.
- a core 24 A which is rotatably supported and movably supported in the direction in which it extends, and a roller body 24 B coaxially disposed around the outer periphery of the core 24 A.
- the outer diameter of the roller is set to 2 O mm.
- the core metal part 24 A is formed of an iron shaft having a diameter of 14 mm
- 24 B is a silicone rubber heat-resistant elastic body attached at a thickness of 3 mm to the outer periphery of the cored bar portion 24 A (specifically, a JISA hardness of 40 degrees, which is harder than the fixing roller 22 described above). Silicone rubber) Force is formed.
- the pressing roller 24 is configured to function as a driving roller in this embodiment. That is, as shown in FIG. 3, the driven gear 42 is coaxially fixed to one of the metal core portions 24 A of the pressure roller 24.
- the driven gear 42 (not shown in detail) includes a driving gear 44 (that is, a driving force from a driving source (not shown)) that constitutes a driving mechanism (that is, driving means).
- a driving gear 44 which is rotationally driven by receiving the force via the force transmission mechanism is coupled, and the driving force from the driving mechanism is transmitted to the driven gear 42 via the driving gear 44, and an additional force is applied.
- the pressure roller 24 is configured to be driven to rotate.
- the drive gear 44 is rotatably supported by a support shaft 46 fixed to the mounting stay 16.
- One end (a base end) of a swing arm 48 is pivotally supported on the support shaft 46 so as to be swingable.
- the above-described core 24A of the pressure roller 24 is rotatably supported.
- the driven gear 42 and the driving gear 44 are formed having the same module, and are combined with each other. are doing. As a result, the driven gear 42 is driven by the rotation of the driving gear 44, and can rotate around the driving gear 44 while the driving force transmission state is maintained.
- the second shaft hole 16 B formed in the above-described mounting stay 16 allows the core metal part 24 A of the pressurizing roller 4 to pass through and guides the turning operation thereof.
- the second support hole 16B is a circle centered on the support shaft 46 and having a radius equal to the distance between the support shaft 46 and the metal core 24A. It is formed in an arc shape.
- the heat-resistant elastic body of silicone rubber is exposed on the outer peripheral surface of the pressure roller 24.
- the outer peripheral surface of the pressing roller 24 and the outer peripheral surface of the fixing belt 32 frictionally engage with each other via the silicone rubber surface.
- the rotation of the pressure roller 24 is reliably transmitted to the fixing belt 32, so that the fixing belt 32 is driven to travel satisfactorily.
- a 600 W halogen lamp in which the light distribution at both ends is set to be 50% larger than the center is provided as a heat source 26 inside the heating roller 28 described above.
- the heating roller 28 is made of an aluminum pipe having a diameter of 20 mm and a thickness of 1.75 mm, and is anodized. Guide groove 5 formed on mounting stay 1 6 to extend
- the support shaft 28 A rotatably inserted into the shaft 0 is fixed coaxially.
- a collar 30 made of heat-resistant resin, polyethylene ether ketone (PEEK), having a diameter of 24 mm, is fixed to both support shaft portions 28 A. The meandering and offset of the fixing belt 32 wound around the roller 28 are prevented.
- the above-described fixing belt 32 pre-heats unfixed toner on the unfixed sheet S by heat radiation. Heated to allow fixing, heat capacity per square cm of the fixing belt 32, 0. OOS cal / ⁇ C ⁇ 0. 0 2 5 cal Z ° c for this intended C is preferred, this embodiment
- the fixing belt 32 is made of an endless belt body such as a nickel electrode having an inner diameter of 50 mm and a thickness of 40 m, and a silicone rubber attached to an outer peripheral surface of the belt body with a thickness of 150 m. And a heat-resistant elastic release layer.
- the fixing device 10 is provided with an oil application roller 36 for applying a small amount of release oil to the outer peripheral surface of the fixing belt 32.
- the oil application roller 36 has a support shaft 36A rotatably supported by a mounting stay 16 via a bearing (not shown), and a silicone around the support shaft 36A. And a heat-resistant paper layer 36B impregnated with oil.
- the support shaft 36A is formed of an iron shaft having a diameter of 8 mm. It is formed so as to have a roller outer diameter of 14 mm in a state where a porous fluororesin film 36 C of 100 ⁇ is mounted on its outer periphery.
- the configuration for applying the oil is not limited to the configuration of the oil application roller 36 described above, and as shown in FIG. 5, a fixing belt in which a heat-resistant elastic layer such as silicone rubber is provided on a metal cored bar.
- a cleaning roller 39 provided with a synthetic leather or the like on a metal core, a nonwoven fabric impregnated with silicone oil on a metal core, or a layer made of a nonwoven fabric and a layer made of synthetic leather. It is also possible to employ a fixing belt composed of three rollers in combination with the oil application roller 41, an oil application, and a cleaning mechanism.
- this fixing device is used as a mechanism for applying tension to the fixing belt 32.
- the device 10 is provided with a tension lever 38 as shown in FIG.
- the tension lever 38 has its lower end pivotally supported by the mounting stay 16 so as to be freely movable, and has its upper end connected to one end of the mounting stay 16 via a tension spring 52.
- the tension lever 38 is rotationally urged such that the tension lever 38 comes into contact with the outer periphery of the heating roller 28 at a predetermined pressure contact force F2 at an intermediate portion thereof.
- the heating roller 28 is biased in a direction away from the fixing roller 22 along the guide groove 50 by the urging force of the tension spring 52 via the tension lever 38, As a result, the fixing belt 32 that is endlessly stretched between the heating roller 28 and the fixing roller 22 has its upper part covered with the oil application roller 3.
- the tension is set to a predetermined tension.
- the fixing belt 32 is driven to travel in an endless manner in a stable state without slipping or loosening with the rotation of the heating roller 28.
- the fixing belt 32 and the pressure roller 24 are connected to the fixing belt roller 2 of the fixing belt 32.
- a press-contact mechanism 54 for causing the two to be pressed against each other with a predetermined press-contact force at the winding start position will be described.
- the press-contact mechanism 54 is pivotally supported at one end by a mounting shaft 16 via a support shaft 56 so that the press-contact mechanism 54 can contact the metal core 24 A of the pressure roller 24 from below.
- the pressure lever 40 has a lower end connected to the other end of the pressure lever 40, and a pressure spring 58 connected to the upper end of the stay 16 to which the upper end is attached. I have.
- the pressure lever 40 comes into contact with the outer periphery of the core 24A of the pressure roller 24 with a predetermined pressure contact force F1, and as a result, the fixing roller 2
- the fixing belt 28 wound around 2 and the pressurizing roller 4 are pressed against each other by the predetermined pressing force. That is, the fixing belt 32 and the pressing roller 24 come into rolling contact with each other with a predetermined nip width.
- the fixing roller 22 and the pressure roller 24 are attached.
- the fixing position is set so as to be inclined at a predetermined angle clockwise from a perpendicular line lowered from the center position of the fixing roller 22 with respect to the fixing belt 32.
- the nip position between the fixing belt 32 and the pressure roller 24 (that is, the center position of the nip width described above) is slightly smaller than the position immediately below the center position of the fixing roller 22 for the unfixed sheet S. It is defined so as to be shifted forward (leftward in the figure) along the transport direction.
- the fixing device 10 includes a guide plate 34 for guiding the unfixed sheet S conveyed by a conveying mechanism (not shown) toward a rolling contact portion between the fixing belt 32 and the pressure roller 24. ing. As shown in FIG. 6, the guide plate 34
- the gap L 1 between the upper surface of the guide plate 34 and the lower part of the fixing belt 32 is set to be 3 mm. ing.
- the distance L3 between the shafts of the heating roller 28 and the fixing roller 22 is 47 mm, and is perpendicular to the center of the fixing roller 22 and the center position M described above.
- the distance L2 between is set to 23.5 mm.
- the guide plate 34 is provided on its surface with a release treatment layer 62 made of a fluorine resin such as PTFE (polytetrafluoroethylene). As shown in FIGS. 1 and 6, this guide plate 34 is grounded so as not to disturb the unfixed image, but instead of grounding, a static elimination brush, varistor element, diode, etc. may be used. it can.
- a fluorine resin such as PTFE (polytetrafluoroethylene).
- the lower side of the fixing belt 32 wound around the fixing roller 22 and the heating roller 28 is set so as to run to the left in the drawing in a substantially horizontal state.
- the distance between the fixing belt 34 and the fixing belt 32 is set so as to be in a range of about 5 to 20 mm directly below the heating roller 28. That is, the guide plate 34 is set obliquely with respect to the horizontal lower side of the fixing belt 32 so as to head in an upwardly inclined state with respect to the nip position described above. That is, the lower side of the fixing belt 32 and the guide plate 34 define a so-called wedge-shaped conveyance space having the nip position at the top.
- the unfixed sheet S is As it is transported on the guide plate 34, it is reliably brought to the nip position between the fixing belt 32 and the pressure roller 24, where it is pressed and fixed based on a predetermined pressing force F1. Since the unfixed toner is heated in advance by receiving the heat radiation from the belt 32, as a result, the unfixed toner is thermally fixed on the sheet.
- the fixing device 10 includes a thermistor 60 for controlling the temperature of the fixing belt 32.
- the thermistor 60 is, as shown in the figure, a non-sheet passing portion of the fixing belt 32, that is, of the fixing belt 32 directly wound around the heating roller 28, It is configured so that it can contact the right part in the figure and detect its surface temperature. That is, the thermistor 60 is electrically connected to a control unit (not shown), and is configured to transmit temperature information of the fixing belt 32 to the control unit.
- the fixing device 10 having the above-described configuration is configured such that the center point of the fixing roller 22 is C 1, and the intersection of the perpendicular line lowered from the center point C 1 and the fixing belt 32 is C2, the center point of the pressure roller 24 is C3 and a straight line.
- the angle between 1 and C2 and the straight line C2 and C3 is defined as ⁇
- modification is made so that ⁇ becomes 90 degrees to 180 degrees by changing the position of the pressure roller 24.
- the paper passing speed is set to 70 mmZ seconds, and the fixing pressure is set to 200 mm.
- kg ⁇ the surface temperature of the fixing belt 32 is set to 160 ° C., respectively, and the hardness and angle 0 of the fixing roller 22 and the pressure roller 24 are changed.
- Minolta CF was used for the three types of test papers, when 55-kg paper was used for Experimental Example 1, 68-kg paper was used for Experimental Example 2, and OHP film was used for Experimental Example 3. Transfer the unfixed image with 70 toner This was used to test whether image distortion, uneven gloss, etc., occurred. In these tests, five sheets were passed and no uneven gloss of the image occurred on all five sheets. In this case, ⁇ , and if even one sheet showed uneven gloss, ⁇ , five sheets The test results are shown in Tables 1 to 3 with X indicating that uneven gloss of the image occurred in all cases, and ⁇ if even one sheet of test paper wrapped around the fixing belt 32. Shown respectively.
- the angle ⁇ is preferably from 125 degrees to 160 degrees.
- the heating roller 28 is made to function as a driving roller for driving the fixing belt 32, the fixing belt 32 can be satisfactorily driven and the angle ⁇ ⁇ can be changed. In this way, it is possible to find the optimum fixing state. Therefore, since the fixing belt 32 can be driven to travel by the heating roller 28 in this manner, when designing a driving mechanism for driving the fixing belt 32 to travel, the degree of freedom in design is further improved. It becomes possible.
- the present invention is not limited to the configuration of the above-described embodiment, but includes the gist of the present invention. It goes without saying that various modifications can be made without departing from the scope.
- only the pressing roller 24 is set to be movable at least along a direction intersecting the transport direction.
- the pressure roller 24 to which the driven gear 42 is fixed and the driving gear 44 coupled to the driven gear 42 are rotatably mounted on the subframe, respectively, and this subframe is mounted so as to be movable with respect to the stay 16. It can be configured to be attached.
- an endless velvet or an endless chain
- the tensioning mechanism is applied to the endless transmission member to move the subframe in the transport direction. It is also possible to support movably along the intersecting linear direction.
- the heat source 26 such as a halogen lamp is described as being built in the heating roller 28.
- the fixing belt 32 may be provided outside the fixing belt 32 to directly heat the fixing belt 32.
- the fixing device according to the present invention is suitable for use in an image forming apparatus such as an electronic copying apparatus, an electronic printer apparatus, and an electronic facsimile apparatus.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69826125T DE69826125T2 (de) | 1997-06-27 | 1998-06-24 | Fixiergerät |
US09/446,611 US6282398B1 (en) | 1997-06-09 | 1998-06-24 | Fixing apparatus |
EP98929670A EP0992863B1 (en) | 1997-06-27 | 1998-06-24 | Fixing apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9186042A JPH1124486A (ja) | 1997-06-27 | 1997-06-27 | 定着装置 |
JP9/186042 | 1997-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999000714A1 true WO1999000714A1 (en) | 1999-01-07 |
Family
ID=16181389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/002826 WO1999000714A1 (en) | 1997-06-09 | 1998-06-24 | Fixing apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US6282398B1 (ja) |
EP (1) | EP0992863B1 (ja) |
JP (1) | JPH1124486A (ja) |
DE (1) | DE69826125T2 (ja) |
WO (1) | WO1999000714A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100386097B1 (ko) | 1999-12-02 | 2003-06-02 | 가부시키가이샤 리코 | 정착장치, 정착방법 및 그 정착장치를 이용한 화상 형성장치 |
JP2002123111A (ja) * | 2000-10-13 | 2002-04-26 | Ricoh Co Ltd | 定着装置及びその定着装置を有する画像形成装置 |
JP3894721B2 (ja) * | 2000-10-13 | 2007-03-22 | 株式会社リコー | 画像形成装置 |
CN1200323C (zh) * | 2000-12-22 | 2005-05-04 | 松下电器产业株式会社 | 打印装置及定影装置 |
US6625418B2 (en) * | 2001-11-30 | 2003-09-23 | Kabushiki Kaisha Toshiba | Image forming apparatus, method for forming image, and fixing device |
US6580894B1 (en) * | 2002-02-25 | 2003-06-17 | Kabushiki Kaisha Toshiba | Fixing apparatus |
US6782233B2 (en) | 2002-03-08 | 2004-08-24 | Xerox Corporation | Externally heated thick belt fuser |
JP4090375B2 (ja) * | 2003-03-24 | 2008-05-28 | 株式会社沖データ | 定着装置及び画像形成装置 |
JP4103651B2 (ja) * | 2003-03-26 | 2008-06-18 | セイコーエプソン株式会社 | トナーの製造方法 |
JP4103650B2 (ja) * | 2003-03-26 | 2008-06-18 | セイコーエプソン株式会社 | トナーの製造方法 |
JP2007017749A (ja) * | 2005-07-08 | 2007-01-25 | Brother Ind Ltd | 画像形成装置及び定着装置 |
JP4756635B2 (ja) * | 2005-10-20 | 2011-08-24 | 株式会社リコー | 定着装置及びその定着装置を有する画像形成装置 |
JP4855814B2 (ja) * | 2006-03-31 | 2012-01-18 | 株式会社沖データ | 定着装置及び画像形成装置 |
JP2012037679A (ja) * | 2010-08-05 | 2012-02-23 | Ricoh Co Ltd | 定着装置及び画像形成装置 |
JP6120807B2 (ja) * | 2014-07-03 | 2017-04-26 | 京セラドキュメントソリューションズ株式会社 | 定着装置及び画像形成装置 |
JP6481958B2 (ja) * | 2014-10-02 | 2019-03-13 | 株式会社リコー | ベルト装置、定着装置及び画像形成装置 |
JP2021179487A (ja) * | 2020-05-12 | 2021-11-18 | キヤノン株式会社 | 定着装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0312683A (ja) * | 1989-06-09 | 1991-01-21 | Canon Inc | 定着加圧解除装置 |
JPH05127551A (ja) * | 1991-11-05 | 1993-05-25 | Ricoh Co Ltd | 画像形成装置用定着装置 |
JPH08262892A (ja) * | 1995-03-22 | 1996-10-11 | Toshiba Corp | 定着装置とこの定着装置を備える画像形成装置 |
JPH08339133A (ja) * | 1995-06-12 | 1996-12-24 | Minolta Co Ltd | 定着装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US4582416A (en) * | 1984-10-31 | 1986-04-15 | Xerox Corporation | Low mass heat and pressure fuser |
JPH05241464A (ja) * | 1992-02-28 | 1993-09-21 | Toshiba Corp | 定着装置とこの定着装置を備える画像形成装置 |
DE4407931C2 (de) * | 1993-03-10 | 1996-02-01 | Nitto Kogyo Kk | Fixiervorrichtung für ein elektrofotografisches Gerät |
JP3180620B2 (ja) * | 1995-06-06 | 2001-06-25 | ミノルタ株式会社 | 定着ベルト方式の加熱定着装置 |
JPH0980942A (ja) * | 1995-09-08 | 1997-03-28 | Canon Inc | 定着ベルトおよび加熱定着装置 |
JPH0990787A (ja) * | 1995-09-20 | 1997-04-04 | Hitachi Ltd | ベルト定着装置及びそれを用いた電子写真装置、並びにベルト定着装置の定着方法 |
JP3592485B2 (ja) * | 1997-06-12 | 2004-11-24 | 株式会社リコー | 定着装置 |
-
1997
- 1997-06-27 JP JP9186042A patent/JPH1124486A/ja active Pending
-
1998
- 1998-06-24 EP EP98929670A patent/EP0992863B1/en not_active Expired - Lifetime
- 1998-06-24 WO PCT/JP1998/002826 patent/WO1999000714A1/ja active IP Right Grant
- 1998-06-24 US US09/446,611 patent/US6282398B1/en not_active Expired - Fee Related
- 1998-06-24 DE DE69826125T patent/DE69826125T2/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0312683A (ja) * | 1989-06-09 | 1991-01-21 | Canon Inc | 定着加圧解除装置 |
JPH05127551A (ja) * | 1991-11-05 | 1993-05-25 | Ricoh Co Ltd | 画像形成装置用定着装置 |
JPH08262892A (ja) * | 1995-03-22 | 1996-10-11 | Toshiba Corp | 定着装置とこの定着装置を備える画像形成装置 |
JPH08339133A (ja) * | 1995-06-12 | 1996-12-24 | Minolta Co Ltd | 定着装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0992863A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH1124486A (ja) | 1999-01-29 |
DE69826125T2 (de) | 2005-09-22 |
EP0992863A4 (en) | 2001-03-21 |
US6282398B1 (en) | 2001-08-28 |
EP0992863B1 (en) | 2004-09-08 |
EP0992863A1 (en) | 2000-04-12 |
DE69826125D1 (de) | 2004-10-14 |
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