CN106444327A - Fixing device and image forming apparatus - Google Patents
Fixing device and image forming apparatus Download PDFInfo
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- CN106444327A CN106444327A CN201610454825.XA CN201610454825A CN106444327A CN 106444327 A CN106444327 A CN 106444327A CN 201610454825 A CN201610454825 A CN 201610454825A CN 106444327 A CN106444327 A CN 106444327A
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- fixing device
- heater
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
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- 238000003384 imaging method Methods 0.000 description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
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- 239000010935 stainless steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
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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
- 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
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Abstract
The invention relates to a fixing device and image forming apparatus. The fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a nip formation pad disposed inside the fixing rotator. A pressure rotator presses against the nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. A heat generator is disposed inside the fixing rotator to heat the fixing rotator. A reflector is interposed between the heat generator and the nip formation pad. The reflector includes a reflection face to reflect radiant heat radiated from the heat generator. The reflection face includes a reflection portion disposed opposite the heat generator at various angles. A support is provided separately from the nip formation pad and supports the reflector.
Description
Technical field
The present invention relates to fixing device and image processing system.
Background technology
In the past, it is well known that as shorter fixing device preheating time be provided with rotation cylindric fixing band and with fixed
The contact member of the outer peripheral face contact of shadow bands, and include and by the heater configuring in the inner side of fixing band, fixing band is added
The image processing system with fixing device of heat.
It is being involved fixing device described in patent document 1, that includes fixing from the inner side of fixing band
Band is pressed to form component (pressure pad) with the clamping part forming fixing nip portion on contact member.This fixing device is had
Clamping part formation component includes the sliding friction portion (guide part) of the inner circumferential sliding contact with fixing band (heating tape) and from this
The flat enhanced portion that sliding friction portion holds up towards the inner side of fixing band.In addition, clip this enhanced portion also in both sides configuration
There is heater (thermal source).Further, in the two sides of the rising portion of enhanced portion with heater in opposite directions and to position
In be configured with the reflecting member reflecting the radiant heat coming from heater.This reflecting member has with heater in opposite directions
And to position be that summit is come towards the prominent chevron shape of heater.
In the fixing device of patent document 1, the radiant heat coming from heater radiation is the chevron being injected into reflecting member
Reflect on the inclined-plane of shape.At this moment, the photothermal incident angle being injected on the inclined-plane of reflecting member is relative to inclined-plane
For be not right angle.Therefore, radiant heat is entered by the direction that the direction that reflecting member is towards from radiant heat is injected is different
Row reflection.Thus, by preventing reflected radiation heat towards heater, and heater itself is added by this radiant heat
Heat, it becomes possible to fixing band is effectively heated.
But, the reflecting member that patent document 1 is recorded is and the clamping part formation clipping fixing band and contact member abuts
The enhanced portion of component forms as one.Be configured in fixing band inner side clamping part formed component by with fixing band
The parallel axial two ends of rotary shaft are secured on device body.Thus, due to and contact member between abutting pressure
Power, clamping part forms the bending that component can produce the inner side towards fixing band.Thus, form the enhanced portion shape of component with clamping part
The reflecting member being integrally formed can deform with the bending of enhanced portion, and the reflecting member in the direction that enhanced portion is holded up
Skew is produced between the summit of chevron shape and the position of heater.Due to the skew of this position, it is possible to cause by arranging
Above-mentioned chevron shape can not obtain the effect effectively heating fixing band.
Further, as towards being the shape that radiant heat is reflected by different directions from the direction that radiant heat is injected,
It is not limited to above-mentioned chevron shape.For example there is the protuberance of curved surface or have relative to photothermal direction of injecting for tilting
The recess etc. on inclined-plane, as long as can by radiant heat towards with the reflective shape that heater is reflection on different directions, have
Same problem may be produced.
Although in addition, composition described above is to clip the enhanced portion holded up the inner side towards fixing band to be provided with in both sides and send out
Hot body, but, even clipping the composition that enhanced portion is only provided with heater in side, it is also possible to produce same problem.
【Patent document 1】(Japan) franchise 4961047
Content of the invention
In order to solve above-mentioned problem, technical scheme 1 provides a kind of fixing device, and it includes：Ring-type rotation
Body, it is configured to rotate；Contact member, it contacts with the outer peripheral face of described rotor；Clamping part forms component, its quilt
Configuration forms clamping part in the inner side of described rotor and across described rotor and described contact member abutting；Heater,
It is configured in the inner side of described rotor, and reflecting member, and it is configured in the inner side of described rotor and passes through reflecting surface
Reflecting the radiant heat forming component radiation towards described clamping part from described heater, described clamping part forms component
It is provided with the sliding friction portion of inner peripheral surface sliding friction with described rotor, and from described sliding friction portion towards described rotation
The enhancing component that the inner side of body is erect, described heater be configured to the side of the rising portion with described enhancing component in opposite directions and
Right, and, described reflecting member have in described reflecting surface with described heater in opposite directions and to the angle on surface of position
The reflective shape of change, it is characterised in that described reflecting member is to separate independent reflection by forming component with described clamping part
Supporting member supports.
According to the present invention, in band fixing device, even being formed at clamping part, component produces bending, it is also possible to for
The effect effectively being heated fixing band by the reflective shape of reflecting member is maintained.
Brief description
It is the summary pie graph of fixing device involved by embodiment shown in Fig. 1.
It is the summary pie graph of duplicator involved by embodiment shown in Fig. 2.
It is the stravismus explanatory diagram of the fixing device of embodiment shown in Fig. 3.
It is the mode above figure of the fixing device of embodiment during crimpless shown in Fig. 4 (a), be crimping shown in Fig. 4 (b)
When the mode above figure of fixing device of embodiment.
It is the stravismus explanatory diagram of the fixing device of variation shown in Fig. 5.
It is the side view of the fixing device of variation shown in Fig. 6.
It is the amplification oblique drawing of the fixing device of variation shown in Fig. 7.
It is the summary pie graph of the fixing device that reflection part has circular shape shown in Fig. 8.
It is the summary pie graph of the fixing device that reflection part has paddy type shape shown in Fig. 9.
It is the summary pie graph of the fixing device that reflection part has sloping planar section shown in Figure 10.
It is the stravismus explanatory diagram of the fixing device of comparative example shown in Figure 11.
It is the mode above figure of the fixing device of comparative example during crimpless shown in Figure 12 (a), be crimping shown in Figure 12 (b)
When the mode above figure of fixing device of comparative example.
Detailed description of the invention
Hereinafter, the reality of image processing system for the electrofax mode being provided with the fixing device being suitable for the present invention
The mode of executing illustrates.
It is the summary pie graph of the duplicator 500 of image processing system involved by present embodiment shown in Fig. 2.Duplicator
500 include image forming part 200 and sheet feed section 400 below image forming part 200 for the configuration, and configuration is formed at image
Scanner section 300 above portion 200.
Image forming part 200 includes four corresponding to colors such as yellow (Y), magenta (M), cyan (C), K (black)
Individual radiography apparatus 1 (Y, M, C, K).It is attached to the Y after the numeral of each symbol, yellow that what M, C, K represented is, magenta, cyan, black
The component (following identical) of look.Four radiography apparatus 1 (Y, M, C, K) except the color of the respective toner using different with
Outward, because all having essentially identical composition, suitably eliminate, so the following is, the toner color that expression used
" Y ", " M ", " C ", " K " illustrate.
Radiography apparatus 1 include as image carrier photoreceptor the 3rd, to the charging device of the surface of photoreceptor 3 charging the 2nd,
As the developing apparatus 5 of developing mechanism and the cleaning device 7 that photoreceptor 3 is cleaned.
Image forming part 200 includes and writes the writing unit 100 of electrostatic latent image at photoreceptor 3 and be formed at photoreceptor 3
On the intermediate transfer belt 16 that transferred of toner image, and the toner image on four photoreceptors 3 is transferred to respectively
Four primary transfer rollers 6 on intermediate transfer belt 16.Further, it is additionally provided with and opposite carrys out shape with intermediate transfer belt 16
Become secondary transfer printing clamping part, and be transferred to the toner image on intermediate transfer belt 16 on the transfer paper S of recording materials
Secondary transfer roller 26.Be more provided with by the conveyance direction upstream side of transfer paper S than secondary transfer printing clamping part so that transfer paper S once
Standby contraposition roller is to 12.
Image forming part 200 is additionally provided with four toner tanks 20 (Y, M, C, K) and receives to the development consuming toner
The supply toner that device 5 (Y, M, C, K) feeds respectively.In addition, being arranged over as calmly in secondary transfer roller 26
The fixing device 9 of shadow mechanism, and it is provided with exit roller 18 in the conveyance direction downstream of the transfer paper S of this fixing device 9.
Sheet feed section 400 has paper supply cartridge 10 and paper feed roller 11 as recording materials incorporating section, and paper supply cartridge 10
For loading transfer paper S in mounting surface.Paper feed roller 11 is for the transfer paper S that will be loaded in paper supply cartridge 10 page by page
Ground separates supply.
Scanner section 300 has the contact glass 31 of mounting original copy.In addition, in order to by be positioned in contact glass 31 on former
Original text is read out scanning, is additionally provided with the first row car body 32 including original copy illumination light source 32a and the first reflective mirror 32b, and
Include the second driving body 35 of the second reflective mirror 35a and the 3rd reflective mirror 35b.Further, it is additionally provided with lens 33 and quilt
The CCD (ccd image sensor) 34 at lens 33 rear for the configuration.
Then, the action being formed for the image of duplicator 500 illustrates.
When original copy being placed on contact glass 31 and starting image formation action, original copy illumination light source 32a can irradiate
Light, and the reflection light being reflected by original copy is next anti-by the first reflective mirror 32b, the second reflective mirror 35a and the 3rd reflective mirror 35b
Penetrate, then be injected in CCD34 after lens 33 imaging.In scanner section 300, can produce according to the light being injected in CCD34
The raw image information for being formed on transfer paper S.
In image forming part 200, the photoreceptor 3 of rotation by charging device 2 by uniform charged, and according to above-mentioned figure
As information drives writing unit 100.Writing unit 100 sends irradiation light according to image information from light source, and by all
The scanning on the surface of even charged photoreceptor 3 to be formed electrostatic latent image on photoreceptor 3.In this electrostatic latent image, by from aobvious
The developer (toner) of developer roll 15 supply of image device 5 develops, and forms the toner image as visual image.
On the other hand, it during toner image is formed to photoreceptor 3, it is from multiple paper supply cartridges 10 selected one
Separate transfer paper S by paper feed roller 11, and come standby so that its tip to be abutted to the state to the clamping part of 12 for the contraposition roller.So
After, toner image assorted at four primary transfer clamping parts is by the toner on the intermediate transfer belt 16 after overlap transfer
In Xiang, starting the rotation to 12 for the contraposition roller opportunity on transfer paper S to overlap onto, transfer paper S is sent to secondary transfer printing folder
Hold portion.At secondary transfer printing clamping part transferred with toner image transfer paper S by with except brush contacting except electricity, and from
Intermediate transfer belt 16 delivers to fixing device 9 after being mechanically decoupled.
In fixing device 9, transfer paper S heating and pressurization are fixed to toner image on transfer paper S.Pass through
The fixing transfer paper S having toner image of fixing device 9 carrys out ADF to discharge tray 8 through exit roller 18 again.
Can be by cleaning by the transfer residual toner also remaining in after primary transfer clamping part on the surface of photoreceptor 3
Device 7 removes from photoreceptor 3 and reclaims.Transfer residual toner be recycled after photoreceptor 3 surface by except electricity
After device removes electricity, prepare imaging process next time.
In the above description, come for the image information being read original copy by scanner section 300 and according to this image information
The image formation action carrying out imaging is illustrated.Duplicator 500 can also be according to from outside electronics such as personal computers
The image information of machine input carries out imaging.
It in the duplicator 500 of the image processing system of embodiment, is by mean of turning as the centre of middle transfer body
Print is with the 16 intermediate transfer modes being transferred to the toner image on photoreceptor 3 on transfer paper S.Transfer as by toner image
Mode on transfer paper S is not limited to intermediate transfer mode, it is also possible to be to transfer will be made directly to toner image from photoreceptor
Direct mode on transfer paper S.
It is the summary pie graph of fixing device 9 involved by present embodiment shown in Fig. 1.
Fixing device 9 is provided with as the backer roll 30 rotating the contact member driving with as substantially cylindric fixing structure
The fixing band 38 of part.It is provided with in the inner side of cylindric fixing band 38 and constitute pressure pad 60 and the support structure that clamping part forms component
Part 61, and multiple the first halide electrothermal pipe 50a and the second halide electrothermal pipe 50b as heater.
As illustrated in fig. 1, the first halide electrothermal pipe 50a and the second halide electrothermal pipe 50b clips supporting member 61 and is configured
Both sides at above-below direction.
Further, it is provided with between two halide electrothermal pipes 50 and supporting member 61 halide electrothermal pipe 50 is put
The radiant heat penetrated is towards the reflection part 40 of the inner peripheral surface reflection of fixing band 38.
In addition, in the both ends of the long side direction (direction of the paper being perpendicular in Fig. 1) of fixing device 9, be provided with work
The support side plate 70 being supported for the part of tectosome of duplicator 500 member of formation to above-mentioned fixing device 9.
Fixing band 38 is cylindric heating rotor that is soft and that can deform, and the profile including drum is
30mm, thickness are the matrix that the nickel (Ni) of 10～70 μm is made, and the elastic layer being coated on this matrix surface.Elastic layer is by silicon
Rubber is formed, and thickness is 50～150 μm.
On the top layer of fixing band 38, in order to improve durability and guarantee that release property defines and is made up of fluorine prime system resin
Thickness be the release layer of 5～50 μm.PFA (tetrafluoroethene perfluorinated alkoxy vinyl can be enumerated as fluorine prime system resin
Ether copolymer) or PTFE (polytetrafluoroethylene (PTFE)), but be not limited thereto.
In addition, fixing band matrix is also not limited to nickel, it is also possible to be metallic matrix or the PI (polyamides of SUS (stainless steel) etc.
Imines), etc. heat-resistant resin.
Backer roll 30 is by the iron plug 30a of the hollow that external diameter is 30mm and to be formed at this iron plug 30a surface
Elastic layer 30b and release layer 30c formed.
Elastic layer 30b is formed by silicon rubber, and thickness is 5mm.Being preferably formed with thickness on the surface of elastic layer 30b is 40 μm
The release layer 30c being made up of fluoroplast of left and right improves release property.Backer roll 30 is come towards fixing band by force application mechanism
38 are exerted a force, and form the composition crimping with backer roll 30 and fixing band 38.
Pressure pad 60 includes resin portion 60a being made up of the high resin material of the heat resistance of LCP (liquid crystal polymer) etc., with
And cover this resin portion 60a and with the inner face sliding contact of fixing band 38 and equal to the Temperature Distribution of the long side direction of fixing band 38
Homogenized soaking portion 60b made of copper.Pressure pad 60 clips fixing band 38 and crimps with backer roll 30 and form fixing nip portion SN.
Pressure pad 60 is supported by supporting member 61.The both ends of the long side direction of supporting member 61 are by support side plate
70 support, and accept backer roll 30 to pressure pad by strengthening pressure pad 60 from inner side as the supporting member 61 strengthening component
The pressing force of 60 simultaneously forms fixing nip portion SN.
(a b) is clipped supporting member 61 and is configured in the both sides of above-below direction, and propped up by ratio two halide electrothermal pipes 50
The heating pipe clamp in the outside of support side plate 70 long side direction also to be positioned at supports long side direction both ends.
In the region of the narrower width at the width corresponding to undersized transfer paper S for the first halide electrothermal pipe 50a along
Long side direction has arranged the first illuminating part heater strip 51a.Second halide electrothermal pipe 50b is corresponding to large-sized transfer paper S's
The width of the ratio undersized transfer paper S in the region of the wider width of width also will be along long side direction in region in the outer part
Arrange the second illuminating part heater strip 51b.
Reflection part 40 be configured in halide electrothermal pipe 50 and supporting member 61 in opposite directions and to position in, and, its
Long side direction both ends are supported by support side plate 70.Reflection part 40 is by the matrix of aluminum and to be coated in this matrix surface
Silver slurry formed, and by reflecting surface 40f, the radiant heat of halide electrothermal pipe 50 is reflected towards fixing band 38.Reflection part
40 is shape after repeatedly bending the component of tabular to cover it of supporting member 61 and pressure pad 60 and halide electrothermal pipe 50
Between.By such bending shape, reflection part 40 just become in reflecting surface 40f with halide electrothermal pipe 50 in opposite directions and to position
Surface angle be change constitute.
In addition, at the vertical line of the reflecting surface 40f dropping to reflection part 40 from the center of halide electrothermal pipe 50 and reflecting surface
The position that 40f intersects is formed with the chevron shape 43 for summit 41 with this position.By arranging this chevron shape 43, from
Halide electrothermal pipe 50 irradiates among the radiant heat coming, and can be injected into along the radiant heat that above-mentioned vertical line is injected in reflecting surface 40f
In the inclined-plane of chevron shape 43.At this moment, owing to photothermal direction and the inclined-plane of chevron shape 43 injected is not right-angle relationship, spoke
Penetrate heat to reflect towards the direction different from injecting direction.Therefore, be injected into the radiant heat of reflecting surface 40f just it can be avoided that
Reflected towards fixing band 38 by halide electrothermal pipe 50, thus be just prevented from radiant heat and halide electrothermal pipe 50 itself is carried out
Heating.
Here, conventional fixing device is illustrated.Image at duplicator, printer, facsimile machine etc. forms dress
It in putting, is on image-carrier, to form toner image according to image information, and this toner image is transferred to paper using or OHP sheet material
Deng recording materials on, then the recording materials of toner image will be placed with through fixing device, will be mixed colours by heat and pressure
Agent picture is fixed on recording materials.
In fixing device, during use from energy-conservation viewpoint or at image processing system, do not allow the viewpoint of user's wait etc.
Setting out, stand-by period (preheating time) is shortened in the heating preferably by the instantaneous time to heater.Then, as reality
The fixing device of the shortening of existing energy-conservation or stand-by period, discloses and comes to strip and film material or thin roller straight by halide electrothermal pipe
Connect the technology of heating.
The fixing device that patent document 1 is recorded uses the ring-type fixing band that ratio of heat capacities heating roller also will be low, and
Use in the inner side of fixing band and include that pressure pad and its composition strengthening component realize more energy-conservation and shorten the stand-by period
Fixing device.In addition, with the miniaturization of image processing system, fixing band also by downsizing, thus results in the interior of fixing band
The Distance Shortened strengthening between component or reflecting member and heater of side.When reflecting member and heater distance near when,
The radiant heat being reflected by reflecting member can be increased by the amount of heater, and can reduce the efficiency of heating surface to fixing band.
In order to ensure distance necessary between heater and reflecting member during lower thickness by reflecting member, thinning
Result is reduction of rigidity, bends it is possible to cause reflecting member because of deadweight on long side direction.As preventing this
Plant the composition that bending occurs, it may be considered that reflecting member is completely fixed to enhancing component or the composition forming as one.
In addition, the configuration each other of the multiple halide electrothermal pipe by existing in the inner side of fixing band strengthens component,
It is just prevented from the heating between halide electrothermal pipe.Further, it is arranged on the reflecting surface of the reflecting member strengthening on component
In with halide electrothermal pipe in opposite directions and to position, i.e. drop to vertical line and the reflecting surface of reflecting surface from the center of halide electrothermal pipe
The position intersected is chevron shape.Thus, substantially vertical the injecting from halide electrothermal pipe towards reflecting member is eliminated the need for, and
Heating to halide electrothermal pipe itself after preventing radiant heat to be reflected by reflecting member such that it is able to add with the radiant heat of reflection
Hot fixing band.In this fixing device, the position that intersect above-mentioned vertical line and reflecting surface and the position on the summit of chevron shape
It is directed at accurately and inject and prevent radiant heat to halide electrothermal pipe itself for eliminating towards the substantially vertical of reflecting member
Heating be critically important.
As described above, the pressure pad in the inner side being provided with the relatively low ring-type fixing band of thermal capacity and fixing band and enhancing structure
It in the composition of part, is the backer roll in outside by being positioned at fixing band and the crimping of pressure pad forms fixing nip portion.This
When, at pressure pad and the region-wide inner plus-pressure that there is crimping direction of long side direction strengthening component, and produce on long side direction
Raw bending.Then, in strengthening the composition installing reflecting member on component, reflecting member can follow the enhancing causing because of plus-pressure
The bending of component and bend, and cause the position deviation at the summit of reflecting member chevron shape and the center of halide electrothermal pipe, from
And cannot get the raising effect of the efficiency of heating surface of fixing band.
This bending can consider to be prevented by strengthening the maximization of component to improve rigidity.But, owing to strengthening
Component needs to be housed in the inner side of fixing band, so being just difficult to maximize.Therefore, some have typically all been allowed to bend and examine
Consider the shape because usually determining pressure pad and enhancing component of bending.
It is this difference reflection part 40 being fixed on supporting member 61 rather than in support side plate 70 shown in Figure 11
The stravismus explanatory diagram of the fixing device 9 in comparative example when the fixing device 9 of above-mentioned embodiment.It is to take off shown in Figure 11
State during fixing band 38, is only represented by dotted lines the track of fixing band 38 for convenience.
Figure 12 is by the mode above figure after fixing device 9 medelling of comparative example seen from above.Shown in Figure 12 (a)
Be not to backer roll 30 towards fixing band 38 exert a force when crimpless when state, shown in Figure 12 (b) be to backer roll 30 towards
State during crimping when fixing band 38 exerts a force,.
Comparative example is the support composition of the reflection part 40 consisting of supporting member 61, and reflection part 40 is by fixing
Screw 42 is fixed on the long side direction two ends of supporting member 61.Then, as shown in Figure 12 (a), when crimpless, for dress
For the horizontal direction (being parallel to the direction of X-axis in figure) put, the position on the summit 41 of the chevron shape 43 of reflection part 40 and
The position at the center of the first halide electrothermal pipe 50a is consistent.
When crimping, backer roll 30 is exerted a force towards fixing band 38, and is supporting by means of fixing band 38 and pressure pad 60
Effect on component 61 has plus-pressure.Then, when plus-pressure is applied on supporting member 61, as, Figure 12 (b) Suo Shi, propping up
In support component 61, the deformation that the central portion of long side direction bends with leaving can be produced from backer roll 30.
At this moment, reflection part 40 deforms, the long side direction on the summit 41 of above-mentioned chevron shape 43 with supporting member 61
Central portion can deform and leave backer roll 30.Therefore, for the horizontal direction of device, the chevron shape of reflection part 40
The position at the center of the position on the summit 41 of 43 and the first halide electrothermal pipe 50a can occur the position significantly deviateed.As a result,
Be no longer able to avoid the radiant heat injected to the first halide electrothermal pipe 50a by and reflect towards fixing band 38, thus meeting
Reduce the efficiency of heating surface of band.
In the explanation of above-mentioned comparative example, although be that the first halide electrothermal pipe 50a is described, but for clipping support
Component 61 and also can produce same problem for being positioned at the second halide electrothermal pipe 50b of opposition side.
It is the stravismus explanatory diagram of the fixing device 9 of embodiment shown in Fig. 3.Shape when being to take off fixing band 38 shown in Fig. 3
State.
Fig. 4 is by the mode above figure after fixing device 9 medelling of embodiment seen from above.Shown in Fig. 4 (a)
Be not to backer roll 30 towards fixing band 38 exert a force when crimpless when state, be towards fixed shown in Fig. 4 (b) to backer roll 30
State during crimping when shadow bands 38 exert a force.
The fixing device 9 of embodiment is that the support of the reflection part 40 by support side plate 70 is constituted.By reflecting
5～the 8mm at the long side direction both ends of parts 40 is inserted into two support side plate 70 (inboard support side plate 70a, the collateral support in front
Side plate 70b) in, it is fixed to reflection part 40 in support side plate 70.Then, as shown in Fig. 4 (a), when crimpless, right
For the horizontal direction of device, the position on the summit 41 of the chevron shape 43 of reflection part 40 and the first halide electrothermal pipe 50a
The position at center be consistent.
In addition, supporting member 61 is also fixed in support side plate 70, inserting of the reflection part 40 in support side plate 70
Enter position to start in 1mm position below, fixed by inserting the 5～8mm at the long side direction both ends of supporting member 61.
When crimping, backer roll 30 is exerted a force towards fixing band 38, and is supporting by means of fixing band 38 and pressure pad 60
Effect on component 61 has plus-pressure.Then, when plus-pressure is applied on supporting member 61, as, Fig. 4 (b) Suo Shi, propping up
In support component 61, the deformation that the central portion of long side direction bends with leaving can be produced from backer roll 30.
In the fixing device 9 of embodiment, reflection part 40 is not fixed in supporting member 61, but is supported
Two support side plate 70 (a, b) on, so would not deform with the deformation of pressure pad 60 and supporting member 61.Therefore,
Even if when crimpless, for the horizontal direction of device, the position on the summit 41 of the chevron shape 43 of reflection part 40 and
The position at the center of the first halide electrothermal pipe 50a also will not occur position deviation.I.e. it is capable of guarantee the first halogen heating
The positional precision of the position on the summit 41 of the position at the center of pipe 50a and chevron shape 43.
It as a result, eliminate substantially vertical the injecting to reflection part 40 for the radiant heat, and is able to maintain that and will be injected into
Radiant heat on reflection part 40 avoid to the first halide electrothermal pipe 50a by and towards fixing band 38 reflection state, energy
Enough efficiencies of heating surface maintaining band.
In addition, by the efficiency of heating surface maintaining the band in fixing device 9, it becomes possible to reduce the consumption of duplicator 500 entirety
Electric power simultaneously realizes energy-saving.
In addition, by being again secured in support side plate 70 supporting member 61, it becomes possible in the increase of suppression number of parts
While prevent the deformation of reflection part 40 that the bending of supporting member 61 caused.
As illustrated in fig. 1, by configuration supporting member 61 and reflection part 40 between multiple halide electrothermal pipes 50, just
The heating being prevented between halide electrothermal pipe.
[variation]
Then, the variation for fixing device involved by present embodiment 9 illustrates.
It is the stravismus explanatory diagram of the fixing device 9 of variation shown in Fig. 5, be the side of the fixing device 9 of variation shown in Fig. 6
Face figure, is the amplification oblique drawing of the fixing device 9 of the variation seen after the angle being different from Fig. 5 is amplified shown in Fig. 7.
Shown in Fig. 5 to Fig. 7 be by with fixing band the 38th, the second halide electrothermal pipe 50b and the second halide electrothermal pipe 50b in opposite directions and
To reflection part 40 take off when state.
As illustrated in fig. 5, the fixing device 9 of variation is to support supporting member the 61st, instead by support side plate 70 simultaneously
Penetrate parts 40 and the composition of halide electrothermal pipe 50.As illustrated in fig. 5, in support side plate 70, it is formed insertion halide electrothermal pipe 50
Pentagonal heating pipe support oral area 71.Then, as illustrated in fig. 6, it is from top by the fixing component 73 of heating pipe
The state of suppression halide electrothermal pipe 50, this halide electrothermal pipe 50 is shelved on and forms heating pipe and support in the pentagon of oral area 71 super
In two planes of the prominent chevron shape in lower section.Thus, halide electrothermal pipe 50 just and with the contact site of two planes and with
The contact of the contact site of the fixing component 73 of heating pipe etc. 3 is fixed.
Then, it for the position of the horizontal direction of device, is so that the lower section supporting oral area 71 towards heating pipe
The summit of prominent chevron shape and the opening portion that is arranged in support side plate 70 to insert reflection part 40 correspond to
The part on the summit 41 of the chevron shape 43 of reflection part 40 is consistent.Thus, it becomes possible to carry out halogen heating accurately
The positioning on the summit 41 of the chevron shape 43 of the center of pipe 50 and reflection part 40.
Then, it by Fig. 7, reflection part 40 is described and in reflection part 40, apply the composition of leaf spring 72 of tension force.
The end of one side of leaf spring 72 is pressed into and is fixed in support side plate 70, and the end of the opposing party is inserted into reflecting part
Part 40 " L " word shape bending to approximate right angle.Shown in " 72a " in leaf spring 72 such as Fig. 7 under nature, be compared with
Right angle also presses the end of the opposing party by the state bending to approximate right angle to the shape of long side direction outer expandable
Enter reflection part 40.Thus, will act in reflection part 40 and have the power of leaf spring 72 nature to be replied.In Fig. 5～7
In, although shown is the state in support side plate 70b of side in front of inserting leaf spring 72, but same in inboard support side plate 70a
Sample is also to insert leaf spring 72 to bend to the state of approximate right angle.Thus, two leaf springs 72 recover the power of nature
Reflection part 40 can be stretched on long side direction, and prevent from producing curved on long side direction because of the deadweight of reflection part 40
Bent.
It is shown in Fig. 8 and Fig. 9 in the reflecting surface 40f of reflection part 40, as towards being different from the side that radiant heat is injected
To direction carry out the shape of reflected radiation heat and the summary pie graph of the fixing device 9 of the shape beyond there is chevron shape 43.
Due to except in reflection part 40 from halide electrothermal pipe 50 in opposite directions and to the shape of part different in addition to be all common
, so just only difference being illustrated.
Fixing device 9 shown in Fig. 8 be in reflection part 40 with halide electrothermal pipe 50 in opposite directions and to part be provided with court
The circular shape 44 of halide electrothermal pipe 50 projection.In the outer peripheral face of this circular shape 44, inject direction with photothermal
Part at a right angle is very limited amount of, so being injected into the radiant heat of other scopes just towards the side being different from the direction injected
To being reflected.Therefore, in the same manner as the fixing device 9 of above-mentioned embodiment, enable to be injected into the radiation of reflecting surface 40f
Heat is avoided by halide electrothermal pipe 50 and reflects towards fixing band 38.
Fixing device 9 shown in Fig. 9 be in reflection part 40 with halide electrothermal pipe 50 in opposite directions and to part be provided with court
The paddy type shape 45 for depression for the halide electrothermal pipe 50.Owing to forming the inclined-plane of this paddy type shape 45 and the photothermal side of injecting
To not being right-angle relationship, radiant heat will reflect towards the direction different from injecting direction.Therefore, with above-mentioned embodiment
Similarly, the radiant heat enabling to be injected into reflecting surface 40f is avoided by halide electrothermal pipe 50 and towards fixing to fixing device 9
Band 38 reflection.Further, when having the composition of the shape of paddy type shown in Fig. 9 45, when the right angle each other, two inclined-planes of paddy type shape 45
When, it is possible to cause radiant heat can reflect towards the direction injected, it is preferred that two inclined-planes are configured to be not
Right angle.
It is shown in Figure 10 in the reflecting surface 40f of reflection part 40, as towards being different from the direction that radiant heat injects
Direction is carried out the shape of reflected radiation heat and is had parallel but highly different two planar portions and connect inclining of this two planar portions
The summary pie graph of the fixing device 9 in tapered plane portion.
Due to all common with fixing device 9 shown in Fig. 1 in addition to the shape of reflection part 40 is different, so just only
Difference is illustrated.
Fixing device 9 shown in Figure 10 is configured with two reflection parts 40 and covers relative to pressure pad 60 as holding up and propping up
The rising portion of the supporting member 61 of support.This position of reflection part 40 be by as shown in Figure 10 as parallel and highly different
First plane of reflection portion 46A of two planar portions and the 3rd plane of reflection portion 46C and as connect the first plane of reflection portion 46A and
Second plane of reflection portion 46B of the sloping planar section of the 3rd plane of reflection portion 46C is formed.
Two halide electrothermal pipes 50 (50a, 50b) lay respectively at the second plane of reflection portion 46B in opposite directions and to position, penetrate
Enter the photothermal incident angle of the second plane of reflection portion 46B relative to Bu Shi right angle, inclined-plane.Therefore, in the second plane of reflection portion
It in 46B, is towards reflecting radiant heat from the direction that the direction that radiant heat is injected is different, thus just can suppress
By the radiant heat of the second plane of reflection portion 46B reflection towards halide electrothermal pipe 50.Thus, as shown in the arrow " H " in Figure 10,
The radiant heat being injected into the second plane of reflection portion 46B from halide electrothermal pipe 50 is not to return to halide electrothermal pipe 50, and is towards
The fixing band 38 being opposition side with pressure pad 60 reflects.Therefore, by preventing radiant heat, (halogen is constituted to halide electrothermal pipe 50 itself
Element heat-generating pipe 50 glass tube etc.) heating, it becomes possible to effectively heat fixing band 38.
The duplicator 500 of present embodiment is that the image of the longitudinal direction conveyance mode that paper using is transported to top from below is formed
Device.Therefore, the composition that fixing device 9 is fixing band 38 and backer roll 30 configures in the horizontal direction.As image processing system,
Also can be the horizontal conveyance mode that paper using is transported in the horizontal direction, at this moment, can use fixing as fixing device
The fixing device 9 of above-mentioned embodiment in the vertical direction and is rotated the composition after 90 ° by band and backer roll configuration.
Above explanation is a case, and various modes below all have distinctive effect.
(mode A)
Relate to the fixing device of fixing device 9 grade, its ring-type fixing band 38 grade including being configured to rotating
Rotor, and the contact member of the backer roll 30 etc. contacting with the outer peripheral face of rotor, and it is configured in the inner side of rotor simultaneously
Abut pressure pad 60 and the supporting member 61 etc. of the clamping part forming fixing nip portion SN etc. across rotor and contact member
Clamping part form component, and be configured in the heater of the halide electrothermal pipe 50 etc. of the inner side of rotor, and be configured in and turn
The inner side of kinetoplast is simultaneously come to the radiant heat forming component radiation from heater towards clamping part by the reflecting surface of reflecting surface 40f etc.
The reflecting member of reflection part 40 grade reflecting, clamping part formation component has the inner peripheral surface sliding friction with rotor
The sliding friction portion of pressure pad 60 grade, and the increasing of the supporting member 61 etc. erect towards the inner side of rotor from sliding friction portion
Strong component, heater is configured to right in opposite directions with the side of the rising portion strengthening component, and, reflecting member is at reflecting surface
In with heater in opposite directions and to position in have so that from heater radiation come radiant heat not anti-towards the direction of heater
The reflective shape of the angle change on the surface of chevron shape 43 grade penetrated, reflecting member is to separate solely by forming component with clamping part
The reflective support member of vertical support side plate 70 grade supports.
Thus, as the explanation that above-mentioned embodiment is done, separate independent by forming component with clamping part
Reflective support member supports reflecting member, it becomes possible to the enhanced portion forming component independent of clamping part fixes reflecting member.
Thus, even if because and the contact of contact member and formed at clamping part and produce the curved of inner side towards rotor in component
Bent, it is also possible to realize that reflecting member does not follow the composition bending and deforming.Therefore, the reflective shape of reflecting member and heater
Position relationship is just prevented from because clamping part forms the deviation that the bending of component causes, and is able to maintain that position relationship.Even if
Formed at clamping part and component produces bending, it is also possible to the position of reflective shape and heater by maintaining reflecting member is closed
System, is maintained to the effect effectively being heated fixing band by the reflective shape of reflecting member.
(mode B)
According to mode A, reflective shape is that the heater from the reflecting surface of reflecting surface 40f etc. towards halide electrothermal pipe 50 grade is dashed forward
The protuberance of the chevron shape 43 rising or circular shape 44 etc., reflecting member is carried out solid by the reflective support member of support side plate 70 grade
Fixed, so that reflecting member is positioned between the enhanced portion of heater and supporting member 61 etc., and, the central point of heater is positioned at
On the extended line of the projection direction of the protuberance of reflecting surface.Thus, as the explanation that above-mentioned embodiment is done, can make
The radiant heat that must be injected on reflecting surface avoid to heater by and reflect towards the rotor of fixing band 38 grade, with regard to energy
Enough prevent the heating to heater self for the radiant heat.
(mode C), according to mode A or B, reflective shape is from the reflecting surface of reflecting surface 40f etc. towards halide electrothermal pipe 50 etc.
The chevron shape of chevron shape 43 grade of heater projection.
Thus, as the explanation being done above-mentioned embodiment, it is right in opposite directions with heater to be injected in reflecting surface
The radiant heat of position be just injected into the inclined-plane of chevron shape, and reflect towards being different from the direction injecting direction.Thus,
The radiant heat being capable of reflecting avoids the composition being injected in the rotor of fixing band 38 grade by heater.
(mode D)
According to mode A or B, reflective shape is the heating from the reflecting surface of reflecting surface 40f etc. towards halide electrothermal pipe 50 grade
The circular shape of circular shape 44 grade of body projection.
Thus, as the explanation being done above-mentioned embodiment, it is right in opposite directions with heater to be injected in reflecting surface
Position near radiant heat be just injected into the surface of circular shape, and reflect towards being different from the direction injecting direction.By
This, it becomes possible to realize that the radiant heat of reflection avoids the composition being injected in the rotor of fixing band 38 grade by heater.
(mode E)
According to mode A or B, the reflecting member of reflection part 40 grade has holding up of the enhancing component with supporting member 61 grade
Two parallel and highly different planar portions of part (the first plane of reflection portion 46A and the 3rd plane of reflection portion 46C etc.), reflection
Shape is the sloping planar section of the second plane of reflection portion 46B etc. connecting two planar portions.
Thus, as the explanation being done above-mentioned embodiment, it is right in opposite directions with heater to be injected in reflecting surface
Position near radiant heat be just injected into the surface of the sloping planar section relative to the face injecting direction Bu Shi right angle, and towards
It is different from and inject the direction in direction and reflect.Thus, it becomes possible to realize that the radiant heat of reflection is avoided being injected into by heater
Composition in the rotor of fixing band 38 grade.Even if in addition, the position relationship deviation of reflecting member and heater, radiant heat is injected
Reform into the sloping planar section relative to the photothermal face injecting direction Bu Shi right angle to the surface of position of reflecting surface
Surface.Therefore, even if the position relationship of reflecting member and heater deviates, it is also possible to suppression is by the reflective surface of reflecting member
Radiant heat can return to heating source and the heating to heating source self such that it is able to effectively heat the rotation of fixing band 38 grade
Body.
(mode F)
According to any one in mode A to E, the increasing to supporting member 61 grade for the reflective support member of support side plate 70 grade
Strong portion is supported.
Thus, as the explanation that above-mentioned embodiment is done, owing to reflective support member also serves as propping up of enhanced portion
Support component, so just can suppress the reflection part preventing from while increasing causing of number of parts because of the bending of enhanced portion
The deformation of the reflecting member of 40 grades.
(mode G)
According to any one in mode A to F, the reflective support member of support side plate 70 grade is to halide electrothermal pipe 50 grade
Heater is supported.
Thus, as the explanation that upper variation is done, owing to reflective support member also serves as the support structure of heater
Part, it becomes possible to carry out the reflection of the chevron shape 43 etc. of the reflecting member of center and the reflection part 40 etc. of heater accurately
The positioning of shape.
(mode H)
According to any one in mode A to G, the reflective support member of support side plate 70 grade is only to leave supporting member 61
Deng the position of predetermined distance of enhancing component 1mm etc. fix the reflecting member of reflection part 40 grade.
Thus, as, illustrated by above-mentioned embodiment, being prevented from the reflecting member causing because of the bending of enhanced portion
Deformation.
(mode I)
According to any one in mode A to H, the reflecting member effect to reflection part 40 grade that is provided with has from fixing band
The reflecting member of leaf spring 72 grade of the tension force in the centrally directed outside of the rotating shaft direction (long side direction etc.) of the rotor of 38 grades
Drawing mechanism.
Thus, as the explanation that upper variation is done, it is prevented that reflecting member because its conduct oneself with dignity and produce curved
Bent.
(mode J)
The image processing system of a kind of duplicator 500 grade, it includes using toner to form toner on the recording medium
The toner image formation mechanism of image forming part 200 grade of picture, and make toner image be fixed to transfer paper S etc. by heating
Record medium on fixing mechanism, use any one the described fixing device in mode A to I as fixing mechanism
The fixing device of 9 grades.
Thus, as the explanation that above-mentioned embodiment is done, by maintaining the heating effect of the band in fixing device
Rate, it becomes possible to realize the energy-saving of image processing system entirety.
Claims (10)
1. a fixing device, it includes：
Ring-type rotor, it is configured to rotate；
Contact member, it contacts with the outer peripheral face of described rotor；
Clamping part forms component, and it is configured in the inner side of described rotor and supports across described rotor and described contact member
Fetch formation clamping part；
Heater, it is configured in the inner side of described rotor, and
Reflecting member, it is configured in the inner side of described rotor and is come to from described heater towards described folder by reflecting surface
The radiant heat that portion of holding forms component radiation reflects,
Described clamping part forms component and has a sliding friction portion of the inner peripheral surface sliding friction with described rotor, and from described
Sliding friction portion towards described rotor inner side erect enhancing component,
The side that described heater is configured to the rising portion with described enhancing component is right in opposite directions, and, described reflection structure
Part have in described reflecting surface with described heater in opposite directions and to position surface angle change reflective shape,
It is characterized in that, described reflecting member is to separate independent reflective support member and prop up by forming component with described clamping part
Support.
2. fixing device according to claim 1, it is characterised in that：
Described reflective shape is from described reflecting surface towards the protuberance of described heater projection, and described reflective support member is to described
Reflecting member is fixed, so that described reflecting member is positioned between described heater and described enhancing component, and, described
On the extended line of the projection direction that the central point of heater is positioned at the described protuberance of described reflecting surface.
3. fixing device according to claim 1 and 2, it is characterised in that：
Described reflective shape is from described reflecting surface towards the chevron shape of described heater projection.
4. fixing device according to claim 1 and 2, it is characterised in that：
Described reflective shape is from described reflecting surface towards the circular shape of described heater projection.
5. fixing device according to claim 1 and 2, it is characterised in that：
Described reflecting member has parallel and highly different two planar portions of rising portion from described enhancing component, described instead
Penetrating shape is to connect the sloping planar section of said two planar portions.
6. the fixing device according in any of the one of claim 1 to 5, it is characterised in that：
Described reflective support member supports described enhancing component.
7. the fixing device according in any of the one of claim 1 to 6, it is characterised in that：
Described reflective support member supports described heater.
8. the fixing device according in any of the one of claim 1 to 7, it is characterised in that：
Described reflective support member fixes described reflecting member with the position only leaving described enhancing component predetermined distance.
9. the fixing device according in any of the one of claim 1 to 8, it is characterised in that：
It is provided with the tension force in the centrally directed outside having the rotating shaft direction from described rotor to described reflecting member effect
Reflecting member drawing mechanism.
10. an image processing system, it includes：
Toner image formation mechanism, its use toner forms toner image on the recording medium, and
Fixing mechanism, its heating makes toner image be fixed on record medium,
It is characterized in that, use the fixing device in any of the one of claim 1 to 9 as described fixing mechanism.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-125927 | 2015-06-23 | ||
| JP2015125927 | 2015-06-23 | ||
| JP2016087902A JP6677929B2 (en) | 2015-06-23 | 2016-04-26 | Fixing device and image forming device |
| JP2016-087902 | 2016-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106444327A true CN106444327A (en) | 2017-02-22 |
| CN106444327B CN106444327B (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610454825.XA Expired - Fee Related CN106444327B (en) | 2015-06-23 | 2016-06-21 | Fixing device and image forming apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6677929B2 (en) |
| CN (1) | CN106444327B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931907A (en) * | 2017-05-22 | 2018-12-04 | 株式会社理光 | Fixing device, image forming apparatus |
| CN111948926A (en) * | 2019-05-14 | 2020-11-17 | 柯尼卡美能达株式会社 | Fixing device and image forming apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6459065B2 (en) * | 2015-06-24 | 2019-01-30 | 株式会社リコー | Fixing apparatus and image forming apparatus |
| JP7205769B2 (en) * | 2019-01-31 | 2023-01-17 | 株式会社リコー | Fixing device and image forming device |
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| JP2007310220A (en) * | 2006-05-19 | 2007-11-29 | Kyocera Mita Corp | Fixing device and image forming apparatus equipped therewith |
| US20110058864A1 (en) * | 2009-09-10 | 2011-03-10 | Ippei Fujimoto | Fixing device and image forming apparatus including same |
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| JP2014119533A (en) * | 2012-12-14 | 2014-06-30 | Kyocera Document Solutions Inc | Fixing device and image forming apparatus |
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| KR101737419B1 (en) * | 2010-07-09 | 2017-05-18 | 에스프린팅솔루션 주식회사 | Fixing device and image forming apparatus having the same |
| JP2014032383A (en) * | 2012-07-12 | 2014-02-20 | Ricoh Co Ltd | Fixing device and image forming device |
| JP6127580B2 (en) * | 2013-02-27 | 2017-05-17 | 株式会社リコー | Fixing apparatus and image forming apparatus |
| JP2014228685A (en) * | 2013-05-22 | 2014-12-08 | 京セラドキュメントソリューションズ株式会社 | Fixing device and image forming apparatus |
| JP5986968B2 (en) * | 2013-08-28 | 2016-09-06 | 京セラドキュメントソリューションズ株式会社 | Fixing apparatus and image forming apparatus |
| US9411273B1 (en) * | 2015-09-18 | 2016-08-09 | Kyocera Document Solutions Inc. | Fixing device and image forming apparatus |
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2016
- 2016-04-26 JP JP2016087902A patent/JP6677929B2/en active Active
- 2016-06-21 CN CN201610454825.XA patent/CN106444327B/en not_active Expired - Fee Related
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| JP2002072736A (en) * | 2000-08-24 | 2002-03-12 | Fuji Xerox Co Ltd | Fixing apparatus |
| JP2007310220A (en) * | 2006-05-19 | 2007-11-29 | Kyocera Mita Corp | Fixing device and image forming apparatus equipped therewith |
| US20110058864A1 (en) * | 2009-09-10 | 2011-03-10 | Ippei Fujimoto | Fixing device and image forming apparatus including same |
| CN103186080A (en) * | 2011-12-28 | 2013-07-03 | 株式会社理光 | Fixing device and image forming apparatus |
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| CN108931907A (en) * | 2017-05-22 | 2018-12-04 | 株式会社理光 | Fixing device, image forming apparatus |
| CN108931907B (en) * | 2017-05-22 | 2021-01-15 | 株式会社理光 | Fixing device and image forming apparatus |
| CN111948926A (en) * | 2019-05-14 | 2020-11-17 | 柯尼卡美能达株式会社 | Fixing device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017010004A (en) | 2017-01-12 |
| JP6677929B2 (en) | 2020-04-08 |
| CN106444327B (en) | 2019-06-11 |
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