CN107272384A - Fixing device and image processing system - Google Patents
Fixing device and image processing system Download PDFInfo
- Publication number
- CN107272384A CN107272384A CN201710212994.7A CN201710212994A CN107272384A CN 107272384 A CN107272384 A CN 107272384A CN 201710212994 A CN201710212994 A CN 201710212994A CN 107272384 A CN107272384 A CN 107272384A
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- Prior art keywords
- mentioned
- lubricant
- mixed
- bubble
- fixing device
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Classifications
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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
-
- 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
- G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
The present invention relates to fixing device and image processing system, there is provided the fixing device for the sliding properties that can freely adjust lubricant.Fixing band (54) that fixing device (50) possesses the ring-type constituted in the way of it can rotate, the backer roll (56) contacted with the outer peripheral face of fixing band (54), the pressing member (60) for being contacted with the inner peripheral surface of fixing band (54) and pressing fixing band (54) to backer roll and the bubble that makes the lubricant for being supplied to the inner peripheral surface of fixing band (54) be mixed into bubble are mixed into portion.
Description
Technical field
The present invention relates to fixing device and image processing system.
Background technology
It is known to have the fixing device for making its be fixed on the recording medium by being heated and being pressurizeed to toner image.
Have disclosed in Japanese Unexamined Patent Publication 2007-199285 publications (patent document 1) for for making to be in the position opposed with fixing roller
Fixing pad and fixing band frictional force reduction lubricant coating, set detection apply to be used for make fixing roller rotate horse
The detection unit of the torque of the axle reached, the composition of the control of agent handling unit is lubricated according to the testing result of the torque.
Patent document 1：Japanese Unexamined Patent Publication 2007-199285 publications
Being arranged at the sliding component of the inner circumferential of the band of ring-type has the sliding surface contacted with the inner peripheral surface of band.In order to reduce band
With the resistance to sliding of sliding component, lubricant is kept in sliding surface.If due to deteriorating year by year or to lubricant for lubricant
Being mixed into etc. for impurity causes the viscosity of lubricant to reduce, then sliding deteriorates.If band is not slided successfully relative to sliding component,
Then there is toner image on the recording medium and slip, the problem of quality of image is reduced are produced between.
In patent document 1, propose there is the fixing device for the quantity delivered that can adjust lubricant.But, although Neng Gou
Increase quantity delivered improves sliding when the quantity delivered of lubricant is not enough, but the lubricant that can not reduce deterioration and viscosity is extensive
Again to original viscosity.
The content of the invention
It is an object of the invention to provide a kind of fixing device for the sliding properties that can freely adjust lubricant.
The fixing device for reflecting the one side of the present invention is toner image is fixed the fixing device in recording medium, tool
Contacted for the band of the ring-type constituted in the way of it can rotate, the pressing element contacted with the outer peripheral face of band, with the inner peripheral surface of band
And the pressing member for pressing band to pressing element and the lubricant that makes to be located between band and pressing member are mixed into bubble
Bubble is mixed into portion.
In above-mentioned fixing device, the bubble portion of being mixed into makes to be mixed into bubble to the lubricant before the inner peripheral surface supply of band.
Above-mentioned fixing device is also equipped with the lubricant storage portion of kind of lubricant storage.The bubble portion of being mixed into has to store up with lubricant
Deposit the air feed path of the inside connection in portion and be arranged inside of the air from air feed path to lubricant storage portion
The porous plastid of the air outflow port of outflow.
In above-mentioned fixing device, the bubble portion of being mixed into, which has, makes gasification temperature than being present between band and pressing member
The low liquid of the temperature of lubricant is mixed into the liquid of the lubricant before the inner peripheral surface supply to band and is mixed into portion.
Above-mentioned fixing device is also equipped with the lubricant storage portion of kind of lubricant storage.The liquid portion of being mixed into, which has, supplies liquid
To the liquid supply path of lubricant storage portion.
In above-mentioned fixing device, the bubble portion of being mixed into has the inner peripheral surface jet of the band to before being contacted with pressing member
Change the liquid spray nozzle of the temperature liquid lower than the temperature for being present in the lubricant between band and pressing member.
In above-mentioned fixing device, the bubble portion of being mixed into has the inner peripheral surface jet of the band to after just being contacted with pressing member
The gas atomization nozzle of body.
Above-mentioned fixing device is also equipped with controlling the control device of the action of fixing device.Control device can be adjusted in profit
The ratio for the bubble being mixed into lubrication prescription.
Above-mentioned fixing device is also equipped with the torque detection portion of the driving torque of measuring band.Control device can be based on by turning
The torque that square determination part is determined adjusts the ratio for the bubble being mixed into the lubricant.
In above-mentioned fixing device, control device can based on from distance travelled, the logical paper number by fixing device, with
And the travel time parameter going out of group selection that constitutes adjusts the ratio for the bubble being mixed into the lubricant.
In above-mentioned fixing device, control device judges whether to have selected the energy saver mode operation of fixing device, in choosing
When having selected energy saver mode operation, make the ratio of bubble that is mixed into the lubricant than it is non-selected when it is big.
In above-mentioned fixing device, control device judge fixing device be it is pre- hanker or lettering in, make hankering in advance
The ratio for the bubble being mixed into the lubricant is bigger than in lettering.
In above-mentioned fixing device, control device can be based on from the species by recording medium and being attached to record
A parameter that the group selection that the size of the toner image of medium is constituted goes out adjusts the ratio for the bubble being mixed into the lubricant.
In above-mentioned fixing device, bubble is mixed into portion can be independently to the long side direction for being supplied to pressing element
The lubricant of central portion and it is supplied to the lubricant of end of long side direction of pressing element and is mixed into bubble.Control device energy
Enough it is independently adjustable the ratio for the bubble being mixed into the lubricant for be supplied to central portion and is being supplied to the lubrication of end
The ratio for the bubble being mixed into agent.
In above-mentioned fixing device, thermal expansion amount of the control device based on pressing element controls to be supplied to center
The ratio of the ratio for the bubble being mixed into the lubricant in portion and the bubble being mixed into the lubricant for be supplied to end.
In above-mentioned fixing device, species of the control device based on recording medium controls to be supplied to central portion
The ratio of the ratio for the bubble being mixed into lubricant and the bubble being mixed into the lubricant for be supplied to end.
Above-mentioned fixing device is also equipped with reducing in band in the band of rotation from the downstream of the remote position of pressing member
The froth breaking portion of the ratio for the bubble being mixed into the lubricant of side face.
In above-mentioned fixing device, froth breaking portion, which has, is heated to lubricant than being present between band and pressing member
The heating part of the high temperature of the temperature of lubricant.
The fixing device for reflecting the one side of the present invention possesses the above-mentioned fixing device of any one.
According to the fixing device of the present invention, the sliding properties of lubricant can be freely adjusted.
Brief description of the drawings
Fig. 1 is the figure of an in-built example for the image processing system for representing first embodiment.
Fig. 2 is the in-built figure for the fixing device for representing first embodiment.
Fig. 3 is the in-built figure for enlargedly representing the lubricant storage portion shown in Fig. 2.
Fig. 4 is enlargedly to represent the figure near the pressing member shown in Fig. 2.
Fig. 5 is the in-built figure for the lubricant storage portion for representing second embodiment.
Fig. 6 is the in-built figure for the fixing device for representing the 3rd embodiment.
Fig. 7 is the in-built figure for the fixing device for representing the 4th embodiment.
Fig. 8 is the in-built figure for the fixing device for representing the 5th embodiment.
Fig. 9 is to represent the block diagram that the main hardware of image processing system is constituted.
Figure 10 is the curve map of the relation of the various types of temperature and driving torque that represent lubricant.
Figure 11 is the curve map for representing to be mixed into the relation of ratio and driving torque to the bubble of lubricant.
Figure 12 is to represent the curve map to the logical paper number of fixing device and the relation of driving torque.
Figure 13 is to represent that bubble corresponding with logical paper number is mixed into the increased curve map of ratio.
Figure 14 is to represent that bubble is mixed into the curve map of the relation of ratio and pyroconductivity.
Figure 15 is the curve for representing the relation to the toner adhesion amount of each recording medium, driving torque and sliding ratio
Figure.
Figure 16 is the curve map for the relation for representing each recording medium, driving torque and sliding ratio.
Figure 17 is the schematic diagram for the summary shape for representing backer roll.
Figure 18 is the position for the long side direction for representing backer roll, the curve map with the relation of the relative value of transporting velocity.
Figure 19 be after representing to start soon with generally operation when, the position of the long side direction of backer roll and transporting velocity
Relative value relation curve map.
Figure 20 is the song of the relation for the relative value for representing each paper kind, the position of the long side direction of backer roll and transporting velocity
Line chart.
Symbol description in figure：
32 ... toner images, 50 ... fixing devices, 51 ... heating rollers, 51A ... heaters, 54 ... fixing bands, 56 ... pressurizations
Roller, 57 ... motors, 58 ... motor current test sections, 60 ... pressing members, 68 ... lubricants, 70 ... lubricant storage portions, 72 ...
Lubricant donor rollers, 73 ... air feed paths, 74 ... porous plastids, 75 ... liquid supply paths, 76 ... agitating members, 78 ...
Lubricant reclaims scraper, 82 ... liquid spray nozzles, 84 ... gas atomization nozzles, 98 ... froth breaking portions, 100 ... images formation dress
Put, 101 ... control devices, B ... bubbles, S ... paper.
Embodiment
Hereinafter, various embodiments of the present invention will be described referring to the drawings.In the following description, for same part
And inscape mark same symbol.Their title and function is also identical.Therefore, do not repeat for the detailed of them
Explanation.It should illustrate, can also the combination of properly selecting property for each embodiment and each variation of following explanation.
＜ first embodiments ＞
[internal structure of image processing system 100]
Fig. 1 is the figure of an in-built example for the image processing system 100 for representing first embodiment.Reference picture
1 pair of image processing system 100 for carrying fixing device 50 of the invention is illustrated.
Fig. 1 is shown as the image processing system 100 of color printer.Hereinafter, to the image shape as color printer
Illustrated into device 100, but image processing system 100 is not limited to color printer.For example, image processing system 100 can be with
It is black-and-white printer or facsimile machine, can also be the compounding machine (MFP of duplicator, color printer and facsimile machine：
Multi-Functional Peripheral)。
Image processing system 100 possess image formation unit 1Y, 1M, 1C, 1K, intermediate transfer belt 30, primary transfer roller 31,
Secondary transfer roller 33, box 37, driven voller 38, driven roller 39, timing roller 40, fixing device 50 and control device 101.
Image formation unit 1Y, 1M, 1C, 1K are arranged in order along intermediate transfer belt 30.Image formation unit 1Y is from toning
Agent bottle 15Y receives the supply of toner, forms the toner image of yellow (Y).Image formation unit 1M receives from toner bottle 15M
The supply of toner, forms the toner image of magenta (M).Image formation unit 1C receives toner from toner bottle 15C
Supply, forms the toner image of cyan (C).Image formation unit 1K receives the supply of toner from toner bottle 15K, is formed black
The toner image of color (BK).
Image formation unit 1Y, 1M, 1C, 1K are respectively along intermediate transfer belt 30 according to the direction of rotation of intermediate transfer belt 30
It is arranged in order.Image formation unit 1Y, 1M, 1C, 1K possess photoreceptor 10, Charging system 11, exposure device 12, development dress respectively
Put 13 and cleaning device 17.
Charging system 11 makes the surface uniform charged of photoreceptor 10.Exposure device 12 is according to the control for carrying out self-control device 101
Signal processed irradiates laser to photoreceptor 10, and the surface of photoreceptor 10 is exposed according to the picture pattern of input.Thus, with it is defeated
Enter the corresponding electrostatic latent image formation of image on photoreceptor 10.
The one side of developing apparatus 13 rotates developer roll 14, while applying developing bias to developer roll 14, makes developer roll 14
Surface attachment toner.Thus, toner is transferred to photoreceptor 10 from developer roll 14, toner image corresponding with electrostatic latent image
It is developed in the surface of photoreceptor 10.
Photoreceptor 10 and intermediate transfer belt 30 are setting the part of primary transfer roller 31 to contact with each other.Primary transfer roller 31 has
There is roll shape, constituted in the way of it can rotate.By applying the polarity transfer opposite with toner image to primary transfer roller 31
Voltage, toner image is transferred to intermediate transfer belt 30 from photoreceptor 10.The toner image of yellow (Y), the toning of magenta (M)
The toner image of agent picture, the toner image of cyan (C) and black (BK) is by order overlappingly from photoreceptor 10 is transferred to
Between transfer belt 30.Thus, in colored toner image transfer belt 30 formed between.
Intermediate transfer belt 30 is set up in driven voller 38 and driven roller 39.Driven roller 39 is for example by motor rotation (not shown)
Driving.Intermediate transfer belt 30 and driven voller 38 linkedly rotate with driven roller 39.Thus, the toner on intermediate transfer belt 30
As being carried to secondary transfer roller 33.
Cleaning device 17 is crimped with photoreceptor 10.Cleaning device 17 is reclaimed residues in photoreceptor after the transfer of toner image
The toner on 10 surface.
It is placed with box 37 and uses paper S as example of recording medium.One by one passed through timing from box 37 with paper S
Roller 40 delivers to secondary transfer roller 33 along transport path 41.Secondary transfer roller 33 has roll shape, is constituted in the way of it can rotate.
The polarity transfer voltage opposite with toner image is applied in carrying and uses paper S by secondary transfer roller 33.Thus, toner image quilt
The toner image being adsorbed to from intermediate transfer belt 30 on secondary transfer roller 33, intermediate transfer belt 30 is transferred.
Toner image of the timing on timing roller 40 and intermediate transfer belt 30 is carried to the use paper S of secondary transfer roller 33
Location matches it is adjusted.By timing roller 40, the toner image on intermediate transfer belt 30 is transferred to appropriate with paper S
Position.
50 pairs of being pressurizeed and being heated with paper S by itself of fixing device.Thus, toner image is fixed in using paper S.
Then, it is discharged to pallet 48 with paper S.
It should illustrate, above-mentioned, to being said as mode of printing using the image processing system 100 of series system
It is bright, but the mode of printing of image processing system 100 is not limited to series system.The configuration of each composition in image processing system 100
Can suitably it be changed according to the mode of printing used.It is used as the mode of printing of image processing system 100, it would however also be possible to employ rotation
Turn mode, direct transfer modes.In the case of rotation mode, image processing system 100 is by a photoreceptor 10 and coaxial
On multiple developing apparatus 13 for being constituted in the way of it can rotate constituted.Image processing system 100 fills each development in printing
Put 13 to guide in order to photoreceptor 10, the toner image of a variety of colors is developed.In the case of direct transfer modes, image
The toner image that forming apparatus 100 will be formed on photoreceptor 10, which is directly transferred to, uses paper S.
[internal structure of fixing device 50]
Reference picture 2, is further illustrated to the fixing device 50 shown in Fig. 1.Fig. 2 is to represent determining for first embodiment
The in-built figure of image device 50.
As shown in Figure 2, fixing device 50 possesses heating roller 51, fixing band 54, pressing member 60 and backer roll
56。
The external diameter of heating roller 51 is, for example, 20mm~30mm.Heating roller 51 is for example made up of mandrel and top layer.Mandrel is for example
It is aluminum, is the hollow rotating body with drum.The thickness of mandrel is, for example, 2mm.The top layer of heating roller 51 is formed at core
The outer peripheral face of axle.It is preferred that the top layer of heating roller 51 is covered by PFA (tetrafluoroethylene-perfluoro alkoxy ether copolymer) pipe of heat resistance
Lid.Heating roller 51 is configured to hard roller.
In the inner surface of heating roller 51, as the heating unit of heating fixing band 54, the heating such as halogen heater is configured with
Device 51A.Heating roller 51 is heated by heater 51A, and by the heat transfer received from heater 51A to fixing band 54.It is fixing
Band 54 is heated by heater 51A via heating roller 51.
Fixing band 54 is the band of the ring-type with flexibility.Fixing band 54 is set up in heating roller 51 and pressing member 60,
Constituted in the way of it can rotate.Heating roller 51 and pressing member 60 are arranged at the inner peripheral portion of fixing band 54.Fixing band 54 leads to
Rotation is crossed, the heat received to contact portion that is, the clamping zone transmission of fixing band 54 and backer roll 56 from heating roller 51.
By using paper S by forming the clamping zone between fixing band 54 and backer roll 56, the quilt of toner image 32 with paper S is transferred to
Heat and pressurize and melt with paper S.Thus, toner image 32 is fixed in using paper S.
Fixing band 54 is for example made up of basic unit and elastic layer.The basic unit of fixing band 54 by the heat resistances such as polyimides tree
Fat is constituted.The basic unit of fixing band 54 has internal diameter 50mm, width 330mm, 70 μm of thickness.The elastic layer of fixing band 54 is by silicone rubber
The heat-resisting materials such as glue are constituted.The thickness of the elastic layer of fixing band 54 is, for example, 200 μm.The surface of fixing band 54 can be by thickness
The release layers such as 30 μm of PFA pipes are covered.
So that fixing band 54 to be clipped in the middle, the mode opposed with backer roll 56 is configured pressing member 60.Pressing member 60 with
The inner peripheral surface contact of fixing band 54, is supported in the way of fixing band 54 is pressed to backer roll 56.The elastic layer of backer roll 56
Deform, clamping zone is formed between fixing band 54 and backer roll 56.As an example, pressing member 60 is by polyphenylene sulfide
The resinous pressure pad of the heat resistances such as ether, polyimides or liquid crystal polymer is constituted.Pressing member 60 has with being fixed
With the flat sliding surface slided between 54.The sliding surface of pressing member 60 can also be by low frictions such as PTFE (polytetrafluoroethylene (PTFE))
Property coating or sheet material covering.
Pressing member 60 is as an example, the length 15mm with thickness 4mm, short side direction.Pressing member 60 is adding
The axial direction of hot-rolling 51 is longer than with paper S width.In the case of the device passed through for the use paper S of A3 sizes, pressing member 60 has
There is the length 350mm of long side direction.
Inner peripheral surface of the pressing member 60 via lubricant relative to fixing band 54 is slided.Lubricant is maintained at and fixing band
The sliding surface of the pressing member 60 of 54 inner peripheral surface contact.Lubricant is, for example, silicone oil, the plain lubricating grease of fluorine etc..
The inner peripheral portion of fixing band 54 is provided with the lubricant storage portion 70 of kind of lubricant storage.Pacify in lubricant storage portion 70
Lubricant donor rollers 72 equipped with the inner peripheral surface that the lubricant being stored in lubricant storage portion 70 is supplied to fixing band 54, from
Lubricant is reclaimed and is back to the lubricant recovery scraper 78 of lubricant storage portion 70 by the inner peripheral surface of fixing band 54.
Lubricant donor rollers 72 are metal poles, are installed on the bottom of lubricant storage portion 70.Lubricant donor rollers
72 with a part for its outer peripheral face towards the inner space of lubricant storage portion 70, the part of outer peripheral face is towards fixing band 54
The mode of inner peripheral surface is configured.
Lubricant donor rollers 72 rotate to the direction for the moving direction for following fixing band 54.With lubricant donor rollers 72
Rotation, the lubricant contacted in lubricant storage portion 70 with the outer peripheral face of lubricant donor rollers 72 is supplied with being attached to lubricant
The state of the outer peripheral face of roller 72 is moved to outside lubricant storage portion 70.The periphery for the lubricant donor rollers 72 adhered to by lubricant
Face is contacted with the inner peripheral surface of fixing band 54, and lubricant is supplied to the inner peripheral surface of fixing band 54.Lubricant donor rollers 72, which have, to be made
To supply the function that the lubricant of lubricant provides portion to the inner peripheral surface of fixing band 54.
The inner peripheral surface of fixing band 54, the resistance to sliding between fixing band 54 and pressing member 60 are supplied to by lubricant
Reduction.As a result, the torque of fixing band 54 diminishes, with paper S carrying is bad, printing deviation is improved.
Contacted as the backer roll 56 of an example of pressing element with the outer peripheral face of fixing band 54.The external diameter of backer roll 56
E.g. 20mm~40mm or so.Backer roll 56 is for example made up of mandrel, intermediate layer, top layer.Mandrel is the metals such as aluminium or iron
System.The thickness of mandrel is, for example, 1mm~5mm or so.The intermediate layer of backer roll 56 is made up of the elastomer with heat resistance.As
Elastomer, for example with silicone rubber of thickness 3mm heat resistance etc..The material with release property is used on the top layer of backer roll 56
Material.As the material on the top layer of backer roll 56, for example, managed using the PFA of 30 μm of thickness.Backer roll 56 is configured to soft roller.
Backer roll 56 is driven and rotated by motor 57.Rotated by backer roll 56, the revolving force of backer roll 56 is delivered to
Fixing band 54.Thus, fixing band 54 and the driven rotation of backer roll 56.Backer roll 56 presses pressing member 60 via fixing band 54.
Fixing band 54 is clamped between pressing member 60 and backer roll 56.
Motor 57 is an example of the drive device for producing the driving force for being used for rotating backer roll 56.In 57, motor
Such as it is connected with the motor current test section 58 being made up of galvanometer.Motor current test section 58 is that the driving for determining fixing band 54 turns
One example in the torque detection portion of square.The electric current for flowing to motor 57 can be detected by motor current test section 58, to detect
The driving torque of fixing band 54.
The unit of driving torque for detecting fixing band 54 is not limited to above-mentioned.For example, it is also possible to by detecting fixing band
54 rotary speed detects the increase of the driving torque of fixing band 54, can also detect the rotary speed of heating roller 51, may be used also
The increase of the driving torque of fixing band 54 is detected with the testing result based on the deflection with paper S by clamping zone.
[internal structure of lubricant storage portion 70]
Fig. 3 is the in-built figure for enlargedly representing the lubricant storage portion 70 shown in Fig. 2.As shown in Figure 3, exist
Lubricant storage portion 70 is provided with air feed path 73.Air feed path 73 is connected with the inside of lubricant storage portion 70.
Multiple holes of the inner space opening of oriented lubricant storage portion 70 are formed in the periphery of air feed path 73.These multiple holes
Constitute the air outflow port that air flows out from air feed path 73 to the inside of lubricant storage portion 70.Air feed path 73
It is immersed in the lubricant 68 for being stored in the liquid phase of the inside of lubricant storage portion 70.Supplied in the air for foring air outflow port
Periphery to path 73 is provided with porous plastid 74.Porous plastid 74 is, for example, the pipe of ceramics system.
The pressure fan such as air pump are installed in one end of air feed path 73.Driven by pressure fan, road is supplied from air
Footpath 73, by porous plastid 74, air is supplied to the inside of lubricant storage portion 70 via air outflow port.Air passes through porous
Plastid 74, thus produces tiny bubble B in lubricant 68.Air feed path 73 and porous plastid 74, which are constituted, makes bubble
It is mixed into the bubble of lubricant 68 and is mixed into portion.
Lubricant donor rollers 72 make the lubricant 68 comprising bubble B be moved from the interior of lubricant storage portion 70,
Bubble B lubricant 68 is included to the inner peripheral surface supply of fixing band 54.The bubble portion of being mixed into makes gas be mixed into by lubricant to supply
Inner peripheral surface from roller 72 to fixing band 54 supply before lubricant 68.
[lubricant 68 in sliding surface]
Fig. 4 is the figure for enlargedly representing the pressing member 60 shown in Fig. 2.As described above, to the inner peripheral surface of fixing band 54
Supply includes bubble B lubricant 68.The bubble B being mixed into lubricant 68 is lubricated by adhering in the inner peripheral surface of fixing band 54
Fixing band 54 rotates and moved in the state of agent 68, as shown in Figure 4, reaches the area between pressing member 60 and fixing band 54
Domain.The lubricant 68 being located between pressing member 60 and fixing band 54 is mixed into bubble B.
The ratio of viscosities lubricant 68 of air is low.Therefore, with only existing lubricant between pressing member 60 and fixing band 54
68 situation is compared, and the viscosity that there is the appearance of the embodiment shown in Fig. 4 of the lubricant 68 comprising bubble B is reduced, therefore,
Frictional resistance diminishes.Therefore, the sliding of the lubricant 68 comprising bubble B is improved.By being mixed into bubble B in lubricant 68,
The sliding properties of lubricant 68 can be improved.
In addition, the thermal conductivity ratio lubricant 68 of air is low.Therefore, with only being deposited between pressing member 60 and fixing band 54
Compared in the situation of lubricant 68, there is the embodiment shown in Fig. 4 of the lubricant 68 comprising bubble B, from fixing band 54 to
The heat that pressing member 60 is transmitted diminishes.By using the lubricant for including bubble B, it can reduce from fixing band 54 via lubrication
The heat to pressing member 60 of agent 68 is moved, it is possible to increase the thermal insulation of lubricant 68.Therefore, during the preheating of fixing device 50
Between can shorten, the energy saving of fixing device 50 can be improved.
It should illustrate, can also replace supplying the structure that air is mixed into bubble B into lubricant storage portion 70 shown in Fig. 3
Into, and it is the composition that the lubricant 68 for being mixed into bubble B in advance is supplied to lubricant storage portion 70.Or, can also be will be pre-
First be mixed into bubble B lubricant 68 be directly coated on fixing band 54 inner peripheral surface composition.
＜ second embodiments ＞
Fig. 5 is the in-built figure for the lubricant storage portion 70 for representing second embodiment.The profit of second embodiment
Lubrication prescription storage unit 70 as shown in Figure 5, with liquid supply path 75 and agitating member 76.Liquid supply path 75 and lubrication
The inside connection of agent storage unit 70.Gasification temperature ratio is present between fixing band 54 and pressing member 60 by liquid supply path 75
The low liquid of temperature of lubricant 68 supply to lubricant storage portion 70.The liquid supplied via liquid supply path 75
E.g. water.Mix 76 pairs of supplies of component to be stirred to the liquid in lubricant storage portion 70, be dispersed in liquid
In lubricant 68.Agitating member 76 is, for example, the agitator that can be rotated.Liquid supply path 75 and agitating member 76 are constituted
Liquid is mixed into the liquid of lubricant 68 and be mixed into portion.
With the rotation of lubricant donor rollers 72, the outer peripheral face with lubricant donor rollers 72 in lubricant storage portion 70 connects
Tactile lubricant is moved to outside lubricant storage portion 70 being attached in the state of the outer peripheral face of lubricant donor rollers 72.Pass through profit
The outer peripheral face of the lubricant donor rollers 72 of lubrication prescription attachment is contacted with the inner peripheral surface of fixing band 54, and lubricant is supplied to fixing band 54
Inner peripheral surface.The liquid portion of being mixed into makes temperature of the gasification temperature than being present in the lubricant 68 between fixing band 54 and pressing member 60
Low liquid is mixed into the lubricant 68 before the inner peripheral surface supply from lubricant donor rollers 72 to fixing band 54.
The liquid into lubricant 68 is mixed into by being fixed in the state of adhering to lubricant 68 in the inner peripheral surface of fixing band 54
Band 54 rotates and moved, and reaches the region between pressing member 60 and fixing band 54.Liquid is in pressing member 60 and fixing band 54
Between be heated and gasify, as bubble B.Hereby it is achieved that in the lubricant being located between pressing member 60 and fixing band 54
68 are mixed into the state shown in bubble B, Fig. 4.
According to second embodiment, compared with bubble B is directly mixed in into the first embodiment into lubricant 68, can
More small bubble B is set equably to diffuse in lubricant 68.On the other hand, in this second embodiment, due to liquid
Body gasifies, and because heat of gasification captures the heat of fixing band 54, therefore, in terms of energy saving, first embodiment is excellent.
Should illustrate, can also replace Fig. 5 shown in into lubricant storage portion 70 supply liquid and make liquid be mixed into
Composition in lubricant 68, and be to supply the lubricant 68 for being mixed into liquid in advance to the composition of lubricant storage portion 70.Or,
It can also be the composition for the inner peripheral surface that the lubricant 68 for being mixed into liquid in advance is directly coated on to fixing band 54.
The embodiment ＞ of ＜ the 3rd
Fig. 6 is the in-built figure for the fixing device 50 for representing the 3rd embodiment.The fixing dress of 3rd embodiment
Putting 50 has liquid spray nozzle 82.Liquid spray nozzle 82 by gasification temperature ratio be present in fixing band 54 and pressing member 60 it
Between the low liquid of temperature of lubricant 68 be sprayed onto the inner peripheral surface of the fixing band 54 before being contacted with pressing member 60.
The liquid for being sprayed on the inner peripheral surface of fixing band 54 adheres to lubricant 68 and liquid by the inner peripheral surface in fixing band 54
In the state of fixing band 54 rotate and move, reach the region between pressing member 60 and fixing band 54.Liquid is due to pressing structure
The slip of part 60 and fixing band 54 and be dispersed to lubricant 68, also, be heated gasification and as bubble B.Hereby it is achieved that
Exist between pressing member 60 and fixing band 54 and include the state shown in the lubricant 68 of bubble B, Fig. 4.
In the third embodiment, it can be made by the simple composition of the inner peripheral surface that liquid is only sprayed on to fixing band 54
Bubble B is mixed into the lubricant 68 being located between pressing member 60 and fixing band 54.Thereby, it is possible to which fixing band 54 will be configured at
Inner peripheral portion structure simplify, can reduce the thermal capacity of the structure, therefore, it is possible to improve the energy-conservation of fixing device 50
Property.
The embodiment ＞ of ＜ the 4th
Fig. 7 is the in-built figure for the fixing device 50 for representing the 4th embodiment.The fixing dress of 4th embodiment
Putting 50 has gas atomization nozzle 84.The insertion pressing member 60 of gas atomization nozzle 84 is configured.Gas atomization nozzle 84 to just with
The inner peripheral surface jet body of fixing band 54 after the contact of pressing member 60.The gas sprayed from gas atomization nozzle 84 is, for example, compression
Air.
The ejiction opening of gas atomization nozzle 84 is immersed in lubricant 68.The pressure of the gas sprayed from gas atomization nozzle 84
The pressure of power and the lubricant 68 being present between fixing band 54 and pressing member 60 is substantially uniform.Gas is due to because of fixing band 54
Slip and the negative pressure that produces and by a little acquisition into lubricant 68, due to pressing member 60 and fixing band 54 slip and
It is mixed in lubricant 68.Therefore, the situation that gas is largely leaked between fixing band 54 and pressing member 60 is not produced.
In the 4th embodiment, it can be made by the simple composition of the inner peripheral surface that gas is only sprayed on to fixing band 54
Bubble B is mixed into the lubricant 68 between pressing member 60 and fixing band 54.Thereby, it is possible to which fixing band 54 will be configured at
The structure of inner peripheral portion simplifies, and the thermal capacity of the structure can be reduced, therefore, it is possible to improve the energy saving of fixing device 50.
It is preferred that gas was preheated before being sprayed from gas atomization nozzle 84.For example, it is also possible to will be sprayed to gas atomization
Inner peripheral portion of the path configuration of the supply gas of mouth 84 in fixing band 54.In such manner, it is possible to use the inner peripheral portion of release to fixing band 54
Heat gas is preheated, radiating can be reclaimed, therefore, it is possible to realize composition that energy saving is more excellent.
The embodiment ＞ of ＜ the 5th
Fig. 8 is the in-built figure for the fixing device 50 for representing the 5th embodiment.The fixing dress of 5th embodiment
Putting 50 replaces the lubricant shown in the Fig. 2 illustrated in the first embodiment to reclaim scraper 78, and possesses reduction in fixing band 54
Inner peripheral surface lubricant 68 in the froth breaking portion 98 of the ratio of bubble that is mixed into.Froth breaking portion 98 be configured at the fixing band 54 of rotation from
The downstream that pressing member 60 is positioned away from.
In the case where the viscosity of lubricant 68 is higher, be present in from pressing member 60 leave after fixing band 54 in
Bubble B is left in the lubricant 68 of side face.In order to more strictly manage the next time of fixing band 54 and the pressing member 60 in rotation
The ratio for the bubble B being mixed into during contact in lubricant 68, expects the position separated in fixing band 54 from pressing member 60, temporarily
Eliminate the bubble in lubricant 68.
More particularly, froth breaking portion 98 has the heating part of heating lubricant 68.Lubricant 68 is heated to by heating part
The temperature higher than the temperature for being present in the lubricant 68 between fixing band 54 and pressing member 60.Thus, with fixing band 54 and pressing
The expansion phase ratio of the bubble B between component 60 is pressed, bubble B expansion becomes big, easily to the outer brokenly bubble of lubricant 68.Expect there is no harm in
Hinder the mode of bubble B brokenly bubble, make froth breaking portion 98 relative to fixing band 54 with low pressure contact.
If the temperature of heating part heating lubricant 68 is too high, exist to the resistance to ag(e)ing of fixing band 54 bring influence can
Can property.As described above, if lubricant 68 is heated to than being present in the lubricant between fixing band 54 and pressing member 60
The high temperature of temperature, then can more significantly obtain the effect of bubble B brokenly bubbles, but the temperature of lubricant 68 is heated in heating part
The gasification temperature of gas than constituting bubble B is high.
The control ＞ of ＜ fixing devices 50
Hereinafter, to can be applied to the first~the 5th embodiment it is any one fixing device 50, for adjust moisten
The control for being mixed into ratio of bubble B in lubrication prescription 68 is illustrated.Fig. 9 is the main hardware for representing image processing system 100
The block diagram of composition.
As shown in Figure 9, image processing system 100 includes fixing device 50, control device 101, ROM (Read Only
Memory) 102, RAM (Random Access Memory) 103, network interface 104, guidance panel 107 and storage device
120。
Control device 101 is for example made up of at least one integrated circuit.Integrated circuit is for example, at least by a CPU
(Central Processing Unit), at least by an ASIC (Application Specific Integrated
Circuit), at least by a FPGA (Field Programmable Gate Array), or combinations thereof etc. is constituted.
The various programs such as control program 122 of the control device 101 by performing present embodiment, control image processing system
100 action.Control device 101 reads control journey based on the execution order for receiving control program 122 from storage device 120
Sequence 122 gives ROM102.RAM103 is as working storage function, necessary to the execution of temporary transient storage control program 122
Various data.
Antenna (not shown) etc. is connected with network interface 104.Image processing system 100 is via antenna and outside communication
Exchanged between equipment data.Outside communication equipment portable mobile terminal such as including smart mobile phone, server etc..Image shape
It can also be configured to from server via antenna download control program 122 into device 100.
Guidance panel 107 is made up of display and touch panel.Display and touch panel overlap, guidance panel
107 such as accepting the printing operation for image processing system 100, scan operation.
Storage device 120 is, for example, the storage mediums such as hard disk, external storage device.Storage device 120 stores this implementation
Control program 122 of mode etc..The storage place of control program 122 is not limited to storage device 120, and control program 122 can also
Be stored in the storage region (such as caching) of control device 101, ROM102, RAM103, external equipment (such as server).
Control program 122 can also not as monomer program, and be embedded in a part for arbitrary program to provide.
In this case, the control process of present embodiment coordinates to realize with arbitrary program.Even not including such part
Module program, do not depart from the purport of the control program 122 of present embodiment.Also, the work(provided by control program 122
The some or all of energy can also be realized by special hardware.Also, control can also be performed with least one server
Mode as the so-called cloud service of a part for the processing of processing procedure sequence 122 constitutes image processing system 100.
[corresponding with driving torque to control]
Figure 10 is the curve map of the relation of the various types of temperature and driving torque that represent lubricant 68.Transverse axis in Figure 10
Represent the temperature (unit of lubricant 68 being present between the fixing band 54 of fixing device 50 and pressing member 60：℃).Figure 10
In the longitudinal axis represent the driving of fixing band 54 necessary to driving torque (unit：Nm).It should illustrate, the driving of fixing band 54 turns
Square can be detected by using the grade of motor current test section 58 illustrated in the first embodiment.
The curve of circle in Figure 10 figure represents highly viscous lubricant 68, and cubic curve represents the lubricant of low viscosity
68.The region representation of shade in Figure 10, implementing the oblique line extended to left down from upper right temperature from the starting of room temperature
Region.Region in Figure 10, implementing the temperature from upper left to the right the region representation lettering of the shade of the oblique line of lower extension.If
Preferentially from the starting of room temperature the reduction of the driving torque of temperature field and select the lubricant 68 of low viscosity, then determining in lettering
Shadow temperature field, viscosity excessively declines, and causes film to be cut.As a result, as shown in Figure 10, the drive in fixing temperature domain in lettering
Dynamic torque increases.On the other hand, fixing temperature domain of the highly viscous lubricant 68 in lettering, driving torque is relatively low and appropriate,
But the driving torque of temperature field is larger from the starting of room temperature.
Figure 11 is that the bubble for representing the highly viscous lubricant 68 into room temperature is mixed into the relation of ratio and driving torque
Curve map.Transverse axis in Figure 11 represents the ratio (unit of the bubble B being mixed into lubricant 68 and lubricant 68：%).Figure 11
In the longitudinal axis represent the driving of fixing band 54 necessary to driving torque (unit：Nm).As shown in Figure 11, by increasing gas
Bubble is mixed into ratio, can make the viscosity reduction of the appearance of the lubricant 68 comprising bubble B, can reduce driving torque.
Therefore, using the less highly viscous lubricant 68 of driving torque in the fixing temperature domain in lettering, in fixing dress
Put 50 temperature it is relatively low in the case of, make bubble be mixed into ratio increase and reduce driving torque, in lettering in temperature field, make gas
The ratio that bubble is mixed into reduces and turns into the lubrication shape of the viscosity main body of lubricant 68.Control device 101 shown in Fig. 9 is adjusted based on torque
The ratio of the whole bubble being mixed into lubricant 68.Reduce and drive thereby, it is possible to the both sides in lettering is neutralized from the starting of room temperature
Dynamic torque.
[change year in year out corresponding control] with lubricant 68
Figure 12 is to represent the curve map to the logical paper number of fixing device 50 and the relation of driving torque.Transverse axis in Figure 12
Represent the logical paper number to fixing device 50.The longitudinal axis in Figure 12 represents driving torque necessary to the driving of fixing band 54.With
The logical paper number increase of fixing device 50, the heat of lubricant 68 deteriorates and being mixed into the abrasion powder slided, caused
The viscosity of lubricant 68 increases.Therefore, as shown in Figure 12, with the increase of logical paper number, driving torque rises.
As reference picture 11 illustrates, by making to be mixed into ratio increase to the bubble of lubricant 68, lubrication can be reduced
The viscosity of the appearance of agent 68, can reduce driving torque.Figure 13 is to represent that bubble corresponding with logical paper number is mixed into the increasing of ratio
Plus curve map.Transverse axis in Figure 13 represents the logical paper number to fixing device 50.The longitudinal axis in Figure 13 is represented to lubricant 68
Bubble be mixed into ratio (unit：%).
The gas that logical paper number adjustment of the control device 101 based on fixing device 50 shown in Fig. 9 is mixed into lubricant 68
Steep B ratio.Even if with the increase of logical paper number, the viscosity of of lubricant 68 itself increases, by as shown in Figure 13 with
Logical paper number makes bubble be mixed into ratio increase, can also suppress to include the variation of the viscosity of the appearance of bubble B lubricant 68.
Therefore, it is possible to suppress the variation of the driving torque changed year in year out with lubricant 68, it is possible to increase fixing device 50 it is resistance to old
The property changed.
Except line-spacing can also be walked based on the roller for constituting fixing device 50 in addition to the logical paper number based on fixing device 50
From or travel time adjust the ratio for the bubble B being mixed into lubricant 68.
[control of the pyroconductivity of lubricant]
Figure 14 is the curve map for representing to be mixed into ratio and the relation of the pyroconductivity of lubricant 68 to the bubble of lubricant 68.
Transverse axis in Figure 14 represents to be mixed into ratio to the bubble of lubricant 68.The longitudinal axis in Figure 14 represents lubricant 68 or including gas
Steep the pyroconductivity (unit of B lubricant 68：W/m·k).As shown in Figure 14, with only lubricant 68 (bubble is mixed into ratio
Rate 0%) pyroconductivity compare, bubble is mixed into that ratio is bigger, including the pyroconductivity of appearance of bubble B lubricant 68 is got over
It is small.
Using the characteristic of the pyroconductivity shown in Figure 14, it can hanker and fixing device 50 in the pre- of fixing device 50
Energy saver mode operation in make bubble be mixed into ratio increase.Control device 101 shown in Fig. 9 judges whether to have selected fixing device
50 energy saver mode operation, when have selected energy saver mode operation, makes the ratio ratio for the bubble being mixed into lubricant 68 not
It is big when selecting energy saver mode to run.Or, outer control device 101 judges that fixing device 50 is hankered or in lettering in advance,
Hanker making in advance the bubble B being mixed into lubricant 68 ratio ratio in lettering it is big.
If making the bubble B ratio increase being mixed into lubricant 68, between fixing band 54 and pressing member 60
The pyroconductivity of lubricant 68 including bubble B diminishes, then diminishes from fixing band 54 to the amount of heat transfer of pressing member 60.Cause
This, can be such that the preheating of fixing device 50 terminates in the short time.Or, it is possible to increase the energy saving of fixing device 50.
Even under the different environment of the temperature for producing influence to the viscosity of lubricant 68, by adjusting lubricant 68 and gas
B ratio is steeped, the uniformity of fixing band 54 and the sliding properties of pressing member 60 can be also improved.
[corresponding with image or recording medium to control]
Even if the sliding mode between fixing band 54 and pressing member 60 is identical, toner image 32 on the recording medium with
Whether the toner adhesion amount that slides also depend on recording medium in is produced between fixing band 54.Figure 15 is represented according to record
The curve map of the relation of the toner adhesion amount of medium, driving torque and sliding ratio.Transverse axis in Figure 15 represents fixing band 54
Driving necessary to driving torque.The longitudinal axis in Figure 15 represents the generation rate (sliding ratio) slided.
The curve of circle in Figure 15 represents that cubic curve represents to use paper S with not having the situation of toner image 32 on paper S
On toner image 32 the relatively small number of situation of adhesion amount, the curve of triangle represents the attachment with the toner image 32 on paper S
Measure relatively large number of situation.Due to in the case of there is no toner image 32 on paper S, with paper S and fixing band 54 friction
Power drives fixing band 54, therefore, even the larger situation of driving torque is not easy to the generation slided.On the other hand, exist
With adhering toner on paper S as in the case of 32, being driven with the frictional force of the toner image 32 of melting and the interface of fixing band 54
Dynamic fixing band 54, therefore, compared with the situation without toner image 32, easily produces slip, easily causes image bad.
Therefore, in the case where the adhesion amount of toner image 32 is more, bubble is made to be mixed into ratio increase, reduction includes bubble
The viscosity of the appearance of B lubricant 68.Control device 101 shown in Fig. 9 is based on the toner image 32 for being attached to recording medium
Size adjusts the ratio for the bubble being mixed into lubricant 68.So, as reference picture 11 illustrates, driving can be reduced
Torque.By reducing driving torque, the generation slided can be suppressed as shown in Figure 15, it is bad therefore, it is possible to suppress image
Generation.
On the other hand, even if the toner adhesion amount in recording medium is identical, according to the surface smoothness of recording medium and
The toner image 32 of melting is to the difference of the easness being impregnated with of recording medium, and the sliding ratio with respect to driving torque is also different.Figure
16 be the curve map for the relation for representing each recording medium, driving torque and sliding ratio.Transverse axis in Figure 16 represents fixing band 54
Driving required for driving torque.The longitudinal axis in Figure 16 is represented and Figure 15 identical sliding ratios.
The curve of circle in Figure 16 represents common paper, and cubic curve represents the coated papers such as print paper, the curve table of triangle
Show OHP films.Relatively low relative to plain paper surface flatness and impregnability is higher, OHP film surface flatness is higher and is impregnated with
Property is relatively low.The characteristic of coated paper is in common paper and the centre of OHP films.Therefore, according to OHP films, coated paper, common paper it is suitable
Sequence, easily produces slip.
Therefore, in the case of the easy paper kind for producing and sliding, bubble is mixed into ratio increase, reduce comprising bubble B
The viscosity of the appearance of lubricant 68.Species of the control device 101 based on recording medium shown in Fig. 9 is adjusted in lubricant 68
The ratio for the bubble being mixed into.So, as reference picture 11 illustrates, driving torque can be reduced.By reducing driving torque,
The generation slided can be suppressed as shown in Figure 16, therefore, it is possible to suppress the generation that image is bad.
[corresponding with the position of the long side direction of pressing element to control]
Figure 17 is the schematic diagram for the summary shape for representing backer roll 56.In fixing device 50, in order to ensure leading to paper, with
Set with the transporting velocity of the end of the paper mode bigger than the transporting velocity of the central portion with paper.Specifically, as shown in figure 17
Like that, so that the external diameter of backer roll 56 is bigger than the central portion of the long side direction (left and right directions in Figure 17) of backer roll 56 in end
Mode set.Thus, the transporting velocity of the end of the use paper of press-in quantitative change greatly is bigger than center.
Figure 18 be the long side direction for representing backer roll 56 position and transporting velocity relative value relation curve map.Figure
" center locates " shown in transverse axis in 18 represents the position of the central portion of the long side direction of backer roll 56, " driving side "
" non-drive side " represents the position of the end of the long side direction of backer roll 56.The longitudinal axis in Figure 18 is represented relative to " center is determined
The relative value of the transporting velocity of the position of the transporting velocity of position ".As shown in Figure 18, the long side direction of backer roll 56
The relative value of transporting velocity of central portion be 100.0%, the transporting velocity of the end of the long side direction of backer roll 56 is than center
The transporting velocity in portion is big, and therefore, relative value is bigger than 100.0%.
The curve of circle in Figure 18 represent for prevent with paper S by after fixing device 50 jump angle transporting velocity most
Big value.Cubic curve in Figure 18 represents the minimum value of the transporting velocity for preventing paper gauffer.As shown in Figure 18, it is
Paper gauffer is prevented, it is necessary to which the transporting velocity ratio relative to central portion for making end is more than 100.1%.In order to prevent jumping angle,
The transporting velocity ratio relative to central portion for needing to make end is less than 100.4%.
The shape representation backer roll 56 of backer roll 56 shown in Figure 17 fully warms, the shape of the state after abundant thermal expansion
Shape.Because just, after the status triggering fixing device 50 of room temperature, the thermal expansion amount of backer roll 56 is smaller, therefore, with Figure 17 institutes
The shape shown is compared, and the external diameter of the end of the long side direction of backer roll 56 is smaller.The central portion of the long side direction of backer roll 56
The ratio of external diameter and the external diameter of end is insufficient, causes the transporting velocity ratio of end to diminish.
When Figure 19 is after representing just to start and generally run, the position of the long side direction of backer roll 56 and transporting velocity
The curve map of the relation of relative value." center locates " shown in transverse axis in Figure 19 represents the long side direction of backer roll 56
The position of central portion, " driving side " " non-drive side " represents the position of the end of the long side direction of backer roll 56.It is vertical in Figure 19
Axle represents the relative value of the transporting velocity of the position of the transporting velocity relative to " center locates ".
The curve of circle in Figure 19 represents that fixing device 50 just starts the transporting velocity ratio after preheating, and cubic curve is represented
Preheat the transporting velocity ratio after starting 30 minutes.As shown in Figure 19, removing after the preheating of the end of backer roll 56 just starts
Fortune speed ratio diminishes compared with the transporting velocity ratio after 30 minutes.
Therefore, after just being started from room temperature, the bubble of the end of backer roll 56 is mixed into ratio and further increase.Bubble is mixed
Enter portion can separately to the long side direction for being supplied to backer roll 56 central portion and end lubricant in be mixed into gas
Bubble, the control device 101 shown in Fig. 9 can be adjusted separately in the central portion and the profit of end for being supplied to backer roll 56
The ratio for the bubble being mixed into lubrication prescription 68.Control device 101 controlled based on the thermal expansion amount of backer roll 56 being supplied to plus
The ratio for the bubble being mixed into the central portion of pressure roller 56 and the lubricant 68 of end.
So, as reference picture 11 illustrates, driving torque can be reduced.By reducing driving torque, can make from
The sliding increase of the end of backer roll 56 after room temperature just starting.Thereby, it is possible to by the transporting velocity of the end of backer roll 56
Than correct to the appropriate transporting velocity shown in Figure 18 than scope.
[with the position of the long side direction of pressing element and paper kind is corresponding controls]
Even if logical paper slip part is identical, transporting velocity is than also different because of the thickness with paper.Think this due to depending on use
The rigid difference of the paper of the thickness of paper.
Figure 20 is the relation for the relative value for representing each paper kind, the position of the long side direction of backer roll 56 and transporting velocity
Curve map." center locates " shown in transverse axis in Figure 20 represents the position of the central portion of the long side direction of backer roll 56,
" driving side " " non-drive side " represents the position of the end of the long side direction of backer roll 56.The longitudinal axis in Figure 20 represent relative to
The relative value of the transporting velocity of the position of the transporting velocity of " center locates ".
The curve of circle in Figure 20 represents the relatively large use paper S of thickness transporting velocity ratio, and cubic curve represents thick
The relatively large use paper S of degree transporting velocity ratio.As shown in Figure 20, if larger with paper S thickness, the length of backer roll 56
The central portion of edge direction and the transporting velocity ratio of end are averaged, and transporting velocity difference is difficult to embody.Therefore, in order to thickness compared with
In the case of big use paper S, the transporting velocity difference of central portion and end is set further to increase, it is necessary to make the resistance to sliding ratio of end
The less use paper S of thickness is small.
Therefore, in the case of the larger use paper S of thickness, the bubble of the end of backer roll 56 is mixed into ratio and further increase
Greatly.Species control of the control device 101 based on recording medium shown in Fig. 9 is being supplied to the central portion of backer roll 56 and end
Lubricant 68 in the ratio of bubble that is mixed into.So, as reference picture 11 illustrates, driving torque can be reduced.Pass through
Driving torque is reduced, the sliding increase of the end of the backer roll 56 of the larger use paper S of thickness end can be made.Thus, energy
The transporting velocity of enough ends by backer roll 56 than correct to the appropriate transporting velocity shown in Figure 18 than scope.
It is considered as embodiment of disclosure to illustrate with whole points, is not restrictive condition.The scope of the present invention is not
By above-mentioned explanation, and represented by Patent right requirement, it is intended that be included in the meaning that is equal with Patent right requirement and
In the range of whole changes.
Claims (19)
1. a kind of fixing device, is toner image is fixed the fixing device in recording medium, it is characterised in that possess：
The band of ring-type, it is constituted in the way of it can rotate；
Pressing element, it is contacted with the outer peripheral face of above-mentioned band；
Pressing member, it is contacted with the inner peripheral surface of above-mentioned band, and above-mentioned band is pressed to above-mentioned pressing element；And
Bubble is mixed into portion, and its lubricant for making to be located between above-mentioned band and above-mentioned pressing member is mixed into bubble.
2. fixing device according to claim 1, it is characterised in that
The above-mentioned bubble portion of being mixed into makes to be mixed into above-mentioned bubble to the above-mentioned lubricant before the above-mentioned inner peripheral surface supply of above-mentioned band.
3. fixing device according to claim 2, it is characterised in that
It is also equipped with storing the lubricant storage portion of above-mentioned lubricant,
The above-mentioned bubble portion of being mixed into has the air feed path connected with the inside of above-mentioned lubricant storage portion and is arranged at sky
The porous plastid of air stream outlet, above-mentioned air outflow port is air from above-mentioned air feed path to above-mentioned lubricant storage portion
The flow export of inside outflow.
4. fixing device according to claim 1, it is characterised in that
The above-mentioned bubble portion of being mixed into, which has, makes gasification temperature than the above-mentioned lubricant that is present between above-mentioned band and above-mentioned pressing member
The low liquid of temperature be mixed into the liquid of the above-mentioned lubricant before the above-mentioned inner peripheral surface supply to above-mentioned band and be mixed into portion.
5. fixing device according to claim 4, it is characterised in that
It is also equipped with storing the lubricant storage portion of above-mentioned lubricant,
The aforesaid liquid portion of being mixed into, which has, supplies aforesaid liquid to the liquid supply path of above-mentioned lubricant storage portion.
6. fixing device according to claim 1, it is characterised in that
The above-mentioned bubble portion of being mixed into, which has, makes gasification temperature than the above-mentioned lubricant that is present between above-mentioned band and above-mentioned pressing member
The low liquid of temperature be sprayed onto above-mentioned band before being contacted with above-mentioned pressing member above-mentioned inner peripheral surface liquid spray nozzle.
7. fixing device according to claim 1, it is characterised in that
The above-mentioned bubble portion of being mixed into have by gas be sprayed onto it is firm contacted with above-mentioned pressing member after above-mentioned band above-mentioned inner peripheral surface
Gas atomization nozzle.
8. the fixing device according to any one in claim 1~7, it is characterised in that
It is also equipped with controlling the control device of the action of above-mentioned fixing device,
Above-mentioned control device can adjust the ratio for the above-mentioned bubble being mixed into above-mentioned lubricant.
9. fixing device according to claim 8, it is characterised in that
It is also equipped with determining the torque detection portion of the driving torque of above-mentioned band,
Above-mentioned control device can be mixed into based on the torque determined by above-mentioned torque detection portion to adjust in above-mentioned lubricant
Above-mentioned bubble ratio.
10. fixing device according to claim 8, it is characterised in that
Above-mentioned control device can be based on constituting from by distance travelled, the logical paper number and travel time of above-mentioned fixing device
A group selection parameter going out adjust the ratio for the above-mentioned bubble being mixed into above-mentioned lubricant.
11. fixing device according to claim 8, it is characterised in that
Above-mentioned control device judging whether to have selected the energy saver mode operation of above-mentioned fixing device, being run have selected energy saver mode
When, make the ratio of above-mentioned bubble that is mixed into above-mentioned lubricant than it is non-selected when it is big.
12. fixing device according to claim 8, it is characterised in that
Above-mentioned control device judge above-mentioned fixing device be it is pre- hanker or lettering in, hankering making mixing in above-mentioned lubricant pre-
The ratio of the above-mentioned bubble entered is bigger than in lettering.
13. fixing device according to claim 8, it is characterised in that
Above-mentioned control device can be based on from the species by aforementioned recording medium and being attached to the above-mentioned tune of aforementioned recording medium
A parameter that the group selection that the size of toner picture is constituted goes out adjusts the ratio for the above-mentioned bubble being mixed into above-mentioned lubricant.
14. the fixing device according to any one in claim 8~13, it is characterised in that
Above-mentioned bubble be mixed into portion can independently to the long side direction for being supplied to above-mentioned pressing element central portion above-mentioned profit
Lubrication prescription and it is supplied to the above-mentioned lubricant of end of above-mentioned long side direction of above-mentioned pressing element and is mixed into above-mentioned bubble,
Above-mentioned control device can be independently adjustable the above-mentioned gas being mixed into the above-mentioned lubricant for being supplied to above-mentioned central portion
The ratio of the ratio of bubble and the above-mentioned bubble being mixed into the above-mentioned lubricant for being supplied to above-mentioned end.
15. fixing device according to claim 14, it is characterised in that
Above-mentioned control device controls be supplied to the above-mentioned profit of above-mentioned central portion based on the thermal expansion amount of above-mentioned pressing element
The ratio for the above-mentioned bubble being mixed into lubrication prescription and the above-mentioned bubble that is mixed into the above-mentioned lubricant for being supplied to above-mentioned end
Ratio.
16. fixing device according to claim 14, it is characterised in that
Species of the above-mentioned control device based on aforementioned recording medium controls to be supplied to the above-mentioned lubricant of above-mentioned central portion
In the ratio of above-mentioned bubble that is mixed into and the ratio for the above-mentioned bubble being mixed into the above-mentioned lubricant for being supplied to above-mentioned end
Rate.
17. the fixing device according to any one in claim 1~16, it is characterised in that
It is also equipped with reducing the above-mentioned inner circumferential in above-mentioned band from the downstream of the remote position of above-mentioned pressing member in the above-mentioned band of rotation
The froth breaking portion of the ratio for the above-mentioned bubble being mixed into the above-mentioned lubricant in face.
18. fixing device according to claim 17, it is characterised in that
Above-mentioned froth breaking portion has the above-mentioned profit being heated to above-mentioned lubricant than being present between above-mentioned band and above-mentioned pressing member
The heating part of the high temperature of the temperature of lubrication prescription.
19. a kind of image processing system, it is characterised in that
Possesses the fixing device described in any one in claim 1~18.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016078243A JP6696272B2 (en) | 2016-04-08 | 2016-04-08 | Fixing device and image forming device |
| JP2016-078243 | 2016-04-08 |
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|---|---|
| CN107272384A true CN107272384A (en) | 2017-10-20 |
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|---|---|---|---|
| CN201710212994.7A Pending CN107272384A (en) | 2016-04-08 | 2017-04-01 | Fixing device and image processing system |
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| CN (1) | CN107272384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11493866B2 (en) | 2018-06-08 | 2022-11-08 | Hewlett-Packard Development Company, L.P. | Heated pressure roller assemblies for printers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7276702B2 (en) * | 2019-01-10 | 2023-05-18 | 株式会社リコー | image forming device |
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Also Published As
| Publication number | Publication date |
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| JP6696272B2 (en) | 2020-05-20 |
| JP2017187718A (en) | 2017-10-12 |
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