CN102193427A - Fuser roller mechanism, fusing device and image formation device - Google Patents
Fuser roller mechanism, fusing device and image formation device Download PDFInfo
- Publication number
- CN102193427A CN102193427A CN2010101376822A CN201010137682A CN102193427A CN 102193427 A CN102193427 A CN 102193427A CN 2010101376822 A CN2010101376822 A CN 2010101376822A CN 201010137682 A CN201010137682 A CN 201010137682A CN 102193427 A CN102193427 A CN 102193427A
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- fixing roller
- thermal insulation
- insulation barriers
- bearing
- fixture
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- Rolls And Other Rotary Bodies (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
The invention discloses a fuser roller mechanism, a fusing device comprising the fuser roller mechanism, and an image formation device comprising the fusing device. The fuser roller mechanism comprises a fuser roller, a support, bearings and heat insulation components, wherein the support is used for maintaining the two ends of the fuser roller and earthed; the bearings are arranged at the two ends of the fuser roller, arranged between the support and the fuser roller, and used for enabling the fuser roller to rotate relative to the support; the heat insulation components are arranged at the two ends of the fuser roller, arranged between the fuser roller and the bearings, fixedly connected with the bearings, and used for preventing the heat conduction between the fuser roller and the support; in addition, the fuser roller mechanism also comprises fixing components for fixing the heat insulation components at the fuser roller, and the support is electrically connected with the fuser roller by the bearings and the fixing components. Therefore, the grounding reliability and stability of the fuser roller are raised, and the devices disclosed by the invention are miniaturized.
Description
Technical field
The present invention relates to fixing roller mechanism, comprise the fixation facility of this fixing roller mechanism, and the image forming apparatus such as duplicating machine, printer, facsimile recorder and compounding machine that comprises this fixation facility.
Background technology
Before, utilizing the image forming apparatus of electrofax mode is technique known.For example, surface at the photoconductor drum of image carrier forms electrostatic latent image, and by developer etc. with the latent electrostatic image developing on the photoconductor drum visual after, image after will developing by transfer apparatus is transferred to and makes its load image on the recording chart, fixation facility by heating and pressurizing comes the developer image on the photographic fixing recording chart then, and the recording chart after the photographic fixing is discharged to outside the equipment via row's paper path.
In fixation facility, be provided with fixing roller, the backer roll of pressurization usefulness and the well heater of generation heat etc. that photographic fixing is used usually.Fixing roller needs heat accumulation, and its two ends are fixed on the support by thermal insulation barriers, therefore, and fixing roller and support electrical isolation.Owing to there is paper to pass through, fixing roller is charged, if it is not discharged, can produce electric leakage or image abnormity.In the prior art, fixing roller general using discharge brush, discharge felt, leaf spring etc. are connected and ground connection with the ground plate of main body via electric wire with the fixing roller contact.As fixing of fixing roller, radially fixing, axially fixing by the C shape ring that is configured in resin bearing or bearing outer end by resin bearing or bearing (may have thermal insulation barriers between bearing and the fixing roller).Resin bearing or bearing fixing are in the metal or the resin support of fixing device.
As the earthing method of above-mentioned fixing roller, fixing discharge brush, discharge felt, leaf spring etc. contact with the fixing roller of rotation, are easy to generate friction noise.Because the vibration of discharge brush, discharge felt etc., contact is unstable, can produce undesired signal.And, on permanance, because discharge brush or discharge felt etc. adhere to developer, thereby ground connection property variation.And accompanying developer comes off, and is easy to generate image bad phenomenon such as developer comes off, deflection.
And as fixing of above-mentioned fixing roller, C shape ring is arranged on the outer end of bearing or thermal insulation barriers, so fixing roller is elongated, the width of machine becomes big, and the consumption of material increases, cost also improves.From the viewpoint of environmental protection such as economical with materials is disadvantageous.
Summary of the invention
Sign in the problems referred to above, the object of the present invention is to provide a kind of fixing roller mechanism, comprise fixing roller; Two ends to this fixing roller keep the also support of ground connection; Between two ends, this support and this fixing roller of this fixing roller, be provided with and make this fixing roller bearing of this support rotation relatively; Be arranged between this fixing roller and this bearing and the heat conducting thermal insulation barriers that is connected, is used to prevent between this fixing roller and this support with this bearing fixing at the two ends of this fixing roller; Wherein, this fixing roller rotating mechanism also comprises the fixture that this thermal insulation barriers is fixed in this fixing roller, and this support is electrically connected with this fixing roller by this bearing and this fixture.
Fixing roller mechanism according to the embodiment of the present invention omits discharge members such as discharge brush, discharge felt, metal leaf spring, and the two ends of fixing roller are ground connection via fixture, bearing and support, thereby obtain stable ground connection reliability.The rubbing contact of member and fixing roller owing to do not discharge is not so can produce noise yet.And foreign matters such as developer are difficult for entering in bearing, thermal insulation barriers and the fixture, and relevant conductive member can not be developed agent and pollute, and therefore can improve the reliability and the permanance of fixing roller ground connection.More can not produce image bad phenomenon such as developer comes off, deflection because of the accompanying developer of conductive member comes off.
According to the embodiment of the present invention, the fixture of fixing roller mechanism is arranged between the two in the external diameter direction of thermal insulation barriers and bearing, to axially fixing of fixing roller.Adopt this structure, can do the length of fixing roller shorter, also can make the width miniaturization of machine, cost also can reduce.
Second purpose of the present invention is to provide a kind of fixation facility, and this fixation facility comprises above-mentioned fixing roller mechanism.
The 3rd purpose of the present invention is to provide a kind of image forming apparatus, and this image forming apparatus comprises above-mentioned fixation facility.
Description of drawings
Disclosed technical scheme of the present invention is elaborated with reference to following accompanying drawing.
Fig. 1 has shown the side direction structural representation of fixing roller mechanism according to the embodiment of the present invention;
Fig. 2 has shown the three-dimensional exploded view of an end of fixing roller mechanism according to the embodiment of the present invention;
Fig. 3 has shown the three-dimensional wiring layout of an end of fixing roller mechanism according to the embodiment of the present invention;
Fig. 4 has shown the schematic perspective view of the thermal insulation barriers of fixing roller mechanism according to the embodiment of the present invention;
Fig. 5 has shown the end schematic perspective view of the fixing roller of fixing roller mechanism according to the embodiment of the present invention;
Fig. 6 has shown the sectional view of Fig. 1 center line A-A;
Fig. 7 has shown the front elevation of the fixture of fixing roller mechanism according to the embodiment of the present invention.
Embodiment
Below, illustrate with reference to the accompanying drawings and implement preferred forms of the present invention.In this article, part identical among each figure or that be equal to is adopted prosign, and suitably simplify or omit the explanation of its repetition.
Fig. 1 has shown the side direction structural representation of fixing roller mechanism according to the embodiment of the present invention; Fig. 2 has shown the three-dimensional exploded view of an end of fixing roller mechanism according to the embodiment of the present invention; Fig. 3 has shown the three-dimensional wiring layout of an end of fixing roller mechanism according to the embodiment of the present invention.
Shown in Fig. 1,2 and 3, fixing roller mechanism 1 comprises fixing roller 2, support 3, bearing 4, thermal insulation barriers 5 and fixture 6.The two ends of 3 pairs of fixing rollers 2 of support keep and ground connection.Bearing 4 is arranged between two ends, support 3 and the fixing roller 2 of fixing roller 2, makes fixing roller 2 relative support 3 rotations.Thermal insulation barriers 5 is arranged between fixing roller 2 and the bearing 4 at the two ends of fixing roller 2, fixedlys connected with bearing 4, is used to prevent the heat conduction between fixing roller 2 and the support 3.Fixture 6 is fixed in fixing roller 2 with thermal insulation barriers 5, and support 3 is electrically connected with fixing roller 2 by bearing 4 and fixture 6.
The fixing roller 2 preferred metallic roll that constitute such as the metal material of aluminium or iron, and, consider the developer isolation, its surface has coatings (for example P101 teflon) such as fluorine, PFA.In order to ensure the reliability of ground connection, the unreal cloth that applies in the position that fixing roller 2 is connected with fixture 6.
The material (for example as PPS K532P1) that thermal insulation barriers 5 preferably can bear the high temperature of fixing roller generation constitutes.Thermal insulation barriers 5 is preferably has certain thickness circular member, and its width is substantially equal to the width of bearing 4.Thermal insulation barriers 5 is fixedlyed connected with bearing 4.
Fixing roller mechanism 1 according to the embodiment of the present invention omits discharge members such as discharge brush, discharge felt, metal leaf spring, and the two ends of fixing roller 2 are ground connection via fixture 6, bearing 4 and support 3, thereby obtain stable ground connection reliability.The rubbing contact of member and fixing roller owing to do not discharge is not so can produce noise yet.And foreign matters such as developer are difficult for entering in bearing 4, thermal insulation barriers 5 and the fixture 6, and relevant conductive member can not be developed agent and pollute, and therefore can improve the reliability and the permanance of fixing roller 2 ground connection.More can not produce image bad phenomenon such as developer comes off, deflection because of the accompanying developer of conductive member comes off.
According to the embodiment of the present invention, the fixture 6 of fixing roller mechanism 1 is arranged between the two in the external diameter direction of thermal insulation barriers 5 and bearing 4, to axially fixing of fixing roller 2.Adopt this structure, can do the length of fixing roller 2 shorter, also can make the width miniaturization of machine, cost also can reduce.
Fig. 4 has shown the schematic perspective view of the thermal insulation barriers of fixing roller mechanism according to the embodiment of the present invention; Fig. 5 has shown the end schematic perspective view of the fixing roller of fixing roller mechanism according to the embodiment of the present invention.As shown in Figure 4 and Figure 5, the side face of thermal insulation barriers 5 is provided with two first through holes 8, but also can be one or more first through hole 8.The position that the thermal insulation barriers 5 of fixing roller 2 is provided with is provided with respectively two second through holes 9 relative with first through hole 8, and corresponding, second through hole 9 also can be one or more.
Fig. 6 has shown the sectional view of Fig. 1 center line A-A.In order more to clearly illustrate the annexation between fixing roller 2 and the fixture 6, omitted thermal insulation barriers 5 in this sectional view.As shown in Figure 6, the inside surface butt of fixture 6 and bearing 4, and thermal insulation barriers 5 is fixed in fixing roller 2 by first through hole 8 and second through hole 9, fixture 6 is electrically connected with fixing roller 2.Though do not show on the figure that fixture 6 can adopt such as members such as bolts, pass first through hole 8 and second through hole 9 is fixed on thermal insulation barriers 5 on the fixing roller 2, stably be electrically connected and axially fixing with fixing roller 2 simultaneously fixing roller 2.
According to above-mentioned embodiment of the present invention, can by fixture 6 thermal insulation barriers 5 be assembled on the fixing roller 2 very easily, simultaneously again can be by electrical connection and axially the fixing between fixture 6 realization fixing rollers 2 and the bearing 4 to fixing roller 2.
Fig. 7 has shown the front elevation of the fixture of fixing roller mechanism according to the embodiment of the present invention.As shown in Figure 7, fixture 6 encircles for the C shape that has than strong elasticity tension force on the side face that is arranged at thermal insulation barriers 5, have respectively two the kink 10 that inserts second through hole 9 from first through hole 8, with first logical also 8 and second through hole 9 is corresponding, kink 10 also can be one or more.Kink 10 is preferably the V-arrangement kink with 60 base angle degree, first through hole 8 and second through hole 9 have and the suitable opening of this V-arrangement kink, the inside surface butt of fixture 6 and bearing 4, its kink 10 passes first through hole 8 and second through hole 9 is fixed in fixing roller 2 with thermal insulation barriers 5, and the end of kink 10 is electrically connected and axially fixing fixing roller 2 with fixing roller 2.
According to above-mentioned embodiment of the present invention, can by fixture 6 thermal insulation barriers 5 be assembled on the fixing roller 2 very easily, simultaneously again can be by electrical connection and axially the fixing between fixture 6 realization fixing rollers 2 and the bearing 4 to fixing roller 2.
As shown in Figure 4, can also be provided with annular recess 11 on the side face of thermal insulation barriers 5, fixture 6 is arranged in the annular recess 11.For the C shape ring as fixture 6 shown in Figure 7, the end of C shape ring slightly outwards bends up, and the part beyond the C shape ring end is arranged in the annular recess of thermal insulation barriers 5 its end and bearing 4 butts.
According to above-mentioned embodiment of the present invention, fixture 6 is arranged in the annular recess 11 on thermal insulation barriers 5 side faces, can be so that cooperating between thermal insulation barriers 5 and the bearing 4 be tightr, impurity such as developer are more difficult to be entered thermal insulation barriers 4 and bearing 4 and pollutes conductive members such as bearing 4 and fixture 6, can further guarantee the reliability and stability of fixing roller 2 ground connection.
As shown in Figure 4, thermal insulation barriers 5 is a bit larger tham the elastic component of the internal diameter of bearing 11 for diameter, and the side face of thermal insulation barriers 5 has fracture 12 on its axial direction, and thermal insulation barriers 5 adopts interference fit with bearing 11 and fixedlys connected.According to above-mentioned embodiment of the present invention, thermal insulation barriers 5 can be assembled on the bearing very easily.
As shown in Figure 1, fixing roller mechanism 1 also comprises the gear 7 by the gear train transmission, and gear 7 is made of heat-barrier material, and integrally formed with the thermal insulation barriers 4 of fixing roller 1 one ends.According to above-mentioned embodiment of the present invention, can further simplify the structure and the assembling of fixing roller mechanism, and further strengthen the effect of heat insulation of fixing roller 2.
In the fixation facility that fixing roller mechanism according to the embodiment of the present invention can be applied to, above-mentioned fixation facility can be applied in the image forming apparatus.
Above-mentioned explanation is the example of embodiment among the present invention, is used to be illustrated more clearly in inventive concept of the present invention, is not the qualification of the present invention being decided the claim scope.Those skilled in the art can easily change and revise the present invention in above-mentioned scope, and envision other embodiment, and these changes and modification are included within the scope of accompanying Claim of the present invention.
Claims (8)
1. fixing roller mechanism comprises:
Fixing roller;
Two ends to described fixing roller keep the also support of ground connection;
Between the two ends of described fixing roller, described support and described fixing roller, be provided with the bearing that makes the described relatively support rotation of described fixing roller;
Be arranged between described fixing roller and the described bearing and the heat conducting thermal insulation barriers that is connected, is used to prevent between described fixing roller and the described support with described bearing fixing at the two ends of described fixing roller;
It is characterized in that described fixing roller rotating mechanism also comprises the fixture that described thermal insulation barriers is fixed in described fixing roller, described support is electrically connected with described fixing roller by described bearing and described fixture.
2. fixing roller as claimed in claim 1 mechanism, it is characterized in that, the side face of described thermal insulation barriers is provided with more than one first through hole, the position at the described thermal insulation barriers place of described fixing roller is provided with relative with described more than one first through hole respectively more than one second through hole, and described fixture and described bearing butt also are fixed in described fixing roller by described more than one first through hole and described more than one second through hole with described thermal insulation barriers.
3. fixing roller as claimed in claim 2 mechanism is characterized in that, described fixture is the C shape ring that is arranged on the side face of thermal insulation barriers, has the more than one kink that inserts described more than one second through hole respectively from described more than one first through hole.
4. fixing roller as claimed in claim 3 mechanism is characterized in that the side face of described thermal insulation barriers is provided with annular recess, and described C shape ring is arranged in the described annular recess both ends of described fixture and described bearing butt.
5. fixing roller as claimed in claim 4 mechanism is characterized in that described thermal insulation barriers is the elastic component that diameter is a bit larger tham the internal diameter of described bearing, and the side face of described thermal insulation barriers has fracture on its axial direction.
6. fixing roller as claimed in claim 5 mechanism is characterized in that described fixing roller rotating mechanism also comprises the gear by the gear train transmission, and described gear is made of heat-barrier material, and integrally formed with the described thermal insulation barriers of described fixing roller one end.
7. a fixation facility is characterized in that, described fixation facility comprises in the claim 1 to 6 each described fixing roller mechanism.
8. an image forming apparatus is characterized in that, described image forming apparatus comprises fixation facility as claimed in claim 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010137682.2A CN102193427B (en) | 2010-03-18 | 2010-03-18 | Fuser roller mechanism, fusing device and image formation device |
| JP2011056635A JP5672086B2 (en) | 2010-03-18 | 2011-03-15 | Fixing roller mechanism, fixing device, and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010137682.2A CN102193427B (en) | 2010-03-18 | 2010-03-18 | Fuser roller mechanism, fusing device and image formation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102193427A true CN102193427A (en) | 2011-09-21 |
| CN102193427B CN102193427B (en) | 2014-03-26 |
Family
ID=44601697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010137682.2A Active CN102193427B (en) | 2010-03-18 | 2010-03-18 | Fuser roller mechanism, fusing device and image formation device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5672086B2 (en) |
| CN (1) | CN102193427B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425027A (en) * | 2012-05-22 | 2013-12-04 | 富士施乐株式会社 | Fixing device and image forming apparatus |
| CN109581840A (en) * | 2017-09-28 | 2019-04-05 | 京瓷办公信息系统株式会社 | Disconnecting prevention structure, fixing device and image forming apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017072713A (en) * | 2015-10-07 | 2017-04-13 | 株式会社リコー | Fixing device and image forming apparatus |
| JP6659125B2 (en) | 2015-11-24 | 2020-03-04 | キヤノン株式会社 | Cylindrical rotating body, method for manufacturing the same, and fixing device |
| JP6614952B2 (en) * | 2015-12-08 | 2019-12-04 | キヤノン株式会社 | Roller member and image heating apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109077A (en) * | 1982-12-14 | 1984-06-23 | Fuji Xerox Co Ltd | Heating roller grounding device in fixing device of copying machine |
| JP2005257838A (en) * | 2004-03-10 | 2005-09-22 | Fuji Xerox Co Ltd | Fixing device |
| CN1940318A (en) * | 2005-09-26 | 2007-04-04 | 三星电子株式会社 | Roller apparatus |
| JP2007121402A (en) * | 2005-10-25 | 2007-05-17 | Kyocera Mita Corp | Structural body for grounding, fixing device and image forming apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08240220A (en) * | 1994-12-29 | 1996-09-17 | Ntn Corp | Bearing structure for high temperature and bearing structure of heating fixer |
| JP2003084605A (en) * | 2001-09-12 | 2003-03-19 | Canon Inc | Thermal fixing device |
| JP4228818B2 (en) * | 2003-07-15 | 2009-02-25 | 村田機械株式会社 | Fixing device |
| US6963719B2 (en) * | 2003-12-16 | 2005-11-08 | Xerox Corporation | Thin walled fuser roll with strengthened keyway |
| JP2009204731A (en) * | 2008-02-26 | 2009-09-10 | Oki Data Corp | Fixing device and image forming apparatus |
-
2010
- 2010-03-18 CN CN201010137682.2A patent/CN102193427B/en active Active
-
2011
- 2011-03-15 JP JP2011056635A patent/JP5672086B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59109077A (en) * | 1982-12-14 | 1984-06-23 | Fuji Xerox Co Ltd | Heating roller grounding device in fixing device of copying machine |
| JP2005257838A (en) * | 2004-03-10 | 2005-09-22 | Fuji Xerox Co Ltd | Fixing device |
| CN1940318A (en) * | 2005-09-26 | 2007-04-04 | 三星电子株式会社 | Roller apparatus |
| JP2007121402A (en) * | 2005-10-25 | 2007-05-17 | Kyocera Mita Corp | Structural body for grounding, fixing device and image forming apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425027A (en) * | 2012-05-22 | 2013-12-04 | 富士施乐株式会社 | Fixing device and image forming apparatus |
| CN103425027B (en) * | 2012-05-22 | 2017-05-31 | 富士施乐株式会社 | Fixing device and image forming apparatus |
| CN109581840A (en) * | 2017-09-28 | 2019-04-05 | 京瓷办公信息系统株式会社 | Disconnecting prevention structure, fixing device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5672086B2 (en) | 2015-02-18 |
| JP2011197673A (en) | 2011-10-06 |
| CN102193427B (en) | 2014-03-26 |
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