CN101526789A - Fixation device and image forming device - Google Patents

Fixation device and image forming device Download PDF

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Publication number
CN101526789A
CN101526789A CN200810183255A CN200810183255A CN101526789A CN 101526789 A CN101526789 A CN 101526789A CN 200810183255 A CN200810183255 A CN 200810183255A CN 200810183255 A CN200810183255 A CN 200810183255A CN 101526789 A CN101526789 A CN 101526789A
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CN
China
Prior art keywords
mill
warm
tape member
guide portion
fixing device
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Granted
Application number
CN200810183255A
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Chinese (zh)
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CN101526789B (en
Inventor
饭酒杯谕
稻叶公春
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Fujifilm Business Innovation Corp
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Fuji Xerox Co Ltd
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Publication of CN101526789A publication Critical patent/CN101526789A/en
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Abstract

The invention provides a fixation device which can improve the fixation performance. A guide portion as a guide unit is arranged on the moving direction upstream side of a belt member of a stopper for guiding the belt member to the heating roll side. The guide portion and the stopper are integrated formed to project to the heating roll side. The guide portion formed on the stopper guides the belt member from the belt member moving direction upstream side to the heating roll side to contact with the heating roll in front of an engagement area.

Description

Fixing device and image processing system
Technical field
The present invention relates to image processing systems such as a kind of printer that has the fixing device of warm-up mill and have this fixing device, facsimile recorder, duplicating machine.
Background technology
For example, patent documentation 1 discloses a kind of fixing device, and it has: pressing component, and it is configured in the rear side of photographic fixing band, and the photographic fixing band is pushed to fixing roller, makes simultaneously and forms the contact mesh regional between photographic fixing band and the fixing roller; And push changeable mechanism, it movably supports pressing component, so that at the contact mesh regional, form the pressure distribution that downstream pressure is higher than other parts, this is pushed changeable mechanism and uprises with the downstream pressure along with the contact mesh regional, then contact the mode of mesh regional narrowed width, adjust pressure distribution and contact mesh regional width.
In addition, for example patent documentation 2 discloses a kind of heat-fixing device, and it has heating unit and pushes the unit, and this is pushed the unit and has the thermal storage member that is used to put aside from the heat of this heating unit.
In addition, for example patent documentation 3 discloses a kind of fixing device, and it has: the photographic fixing band, and it utilizes mesh regional that the image on the recording materials is heated; Fixing roller, it drives this photographic fixing band; The photographic fixing pad, its fixed configurations is used to form mesh regional in the inboard of photographic fixing band, and on fixing roller, and the contact area between the photographic fixing band is provided with high frictional layer, and the contact area between the photographic fixing pad is provided with low friction layer.
Patent documentation 1: the spy opens the 2007-163692 communique
Patent documentation 2: the spy opens the 2002-278333 communique
Patent documentation 3: the spy opens the 2007-003968 communique
Summary of the invention
The present invention proposes according to above-mentioned background, and its purpose is to provide a kind of fixing device, and it can improve fixation performance.
To achieve these goals, fixing device involved in the present invention has: rotatable warm-up mill; Tape member, it is driven in the rotation of described warm-up mill and moves; Pressing component, it is configured in the opposition side of described warm-up mill with respect to described tape member, pushes described warm-up mill across described tape member; Support component, it supports described pressing component, and this pressing component is pushed to described warm-up mill side; And guidance unit, the tape member moving direction upstream side that it is arranged on described pressing component guides described tape member, makes this tape member near to described warm-up mill side joint.
Preferred described tape member contacts with described warm-up mill pushing the tape member moving direction upstream side that the position of described warm-up mill is compared with described pressing component across described tape member.
Preferred described guidance unit is made of guide portion, and this guide portion and described support component form.
Preferred described guidance unit is made of guide portion, and this guide portion forms to described warm-up mill side-prominent.
Preferred described guidance unit is made of guide portion, and this guide portion forms can be across described tape member and described warm-up mill butt.
The present invention comprises the image processing system with described fixing device.
The effect of invention
According to the present invention, a kind of fixing device can be provided, it can improve fixation performance.
Description of drawings
Fig. 1 is the side view of the related image processing system of expression embodiments of the present invention.
Fig. 2 is the sectional view of the related fixing device of expression embodiments of the present invention.
Fig. 3 is the side view of the related block of expression embodiments of the present invention.
Fig. 4 is the oblique view of the related block of expression embodiments of the present invention.
Fig. 5 is the oblique view of the related block of expression embodiments of the present invention.
Fig. 6 is the expression pressing pad is pushed the state of warm-up mill across tape member a side view.
Fig. 7 is the expression pressing pad is pushed the state of warm-up mill across tape member a oblique view.
Fig. 8 is the expression pressing pad is pushed the state of warm-up mill across tape member a oblique view.
Embodiment
Based on accompanying drawing, embodiments of the present invention are described.
Fig. 1 represents the related image processing system of embodiments of the present invention 10.
Image processing system 10 has image processing system main body 12, in this image processing system main body 12, carry image formation unit 14, be provided with row's paper portion 16 on the top of this image processing system main body 12, can dispose for example 2 grades paper supply unit 18,18 in the bottom of this image processing system main body 12 simultaneously.
Each paper supply unit 18 has: paper supply unit main body 20; And paper feeding cassette 22, it accommodates recording mediums such as paper.Paper feeding cassette 22 can be installed on the paper supply unit main body 20 with being free to slide, can pull out to frontal (Fig. 1's is right-hand).
In addition, top disposes pick-up roller 24 near the inner of paper feeding cassette 22, disposes at the rear of this pick-up roller 24 to postpone roller 26 and intake roller 28.
Transfer path 32 is that the pick-up roller 24 from bottom paper supply unit 18 begins the recording medium path till the ejection port 34, this transfer path 32 has near the back side (left surface of Fig. 1) in image processing system main body 12, the part that forms till from pick-up roller 24 beginnings of bottom paper supply unit 18 to fixing device 36 described later roughly vertically.
Upstream side at the fixing device 36 of this transfer path 32 disposes transfer device 42 described later and image carrier 44, in addition, disposes at the upstream side of transfer device 42 and image carrier 44 and to stop roller 38.
In addition, near the ejection port 34 of transfer path 32, dispose exit roller 40.Therefore, the recording medium that utilizes pick-up roller 24 to send from the paper feeding cassette 22 of paper supply unit 18, by postponing roller 26 and intake roller 28 outputs and guiding to transfer path 32, by stopping that roller 38 temporarily stops, and between suitable timing is through transfer device 42 described later and image carrier 44 and transfer printing developer picture, the developer picture that this transfer printing forms is discharged to row's paper portion 16 from ejection port 34 by exit roller 40 by fixing device 36 photographic fixing.
Wherein, under the situation of printed on both sides, make it be back to reversing paths.
That is, the upstream branch of the exit roller 40 of transfer path 32 is 2, is provided with at the part place of this branch to switch pawl 46, is formed with simultaneously from the part of branch to be back to the reversing paths 48 that stops roller 38.
This reversing paths 48 is provided with transfer roller 50a～50c, under the situation of printed on both sides, switch the side that pawl 46 switches to open reversing paths 48, arrive the moment of exit roller 40 in the part of the close rear end of recording medium, make exit roller 40 counter-rotatings, recording medium is guided to reversing paths 48,, discharge to row's paper portion 16 from ejection port 34 through stopping roller 38, transfer device 42, image carrier 44 and fixing device 36.
Image formation unit 14 adopts the electrofax mode, by constituting with the lower part: image carrier 44, it is made of photoreceptor; Charging system 56, it is made of for example charged roller, makes this image carrier 44 uniform chargeds; Optical writing device 58, it utilizes light that sub-image is write the charged image carrier 44 by this Charging system 56; Developing apparatus 60, it has developer roll, makes the sub-image of the image carrier 44 that forms by this optical writing device 58 visual to utilize toner; Transfer device 42, it is made of for example transfer roll, will look like to be transferred to recording medium by the toner that this developing apparatus 60 forms; Scavenge unit 62, its removing remains in the toner on the image carrier 44; And fixing device 36, its make toner on the recording medium that utilizes transfer device 42 transfer printings as photographic fixing to recording medium.
Optical writing device 58 is made of for example sweep type laser explosure device, crosses handle box 64 described later and form sub-image on image carrier 44.
In addition, as other embodiment, optical writing device 58 can use LED or surface light emitting laser etc.
Handle box 64 is integrated and form with image carrier 44, Charging system 56, developing apparatus 60 and scavenge unit 62, makes them can be used as one and changes.
This handle box 64 can take out from image processing system main body 12 by the row of opening paper portion 16.
The detailed construction of fixing device 36 shown in Figure 2.
Fixing device 36 has: warm-up mill 70; Tape member 72, it forms the non junction band shape; Guiding parts 74, it can rotate freely ground pilot tape parts 72; Push unit 76, it is configured in the inside of tape member 72, and tape member 72 is pushed to warm-up mill 70; And dipping pad 78, it is to the inboard supply of lubricant of tape member 72.
The two ends that guiding parts 74 is configured in tape member 72 and pushes unit 76 are pushed unit 76 and are supported on the guiding parts 74.
In addition, also can and push between the unit 76, be provided for the slide (not shown) that reduces tape member 72 and push the friction between the unit 76 at tape member 72.
Warm-up mill 70 has: roller cylindraceous portion 84; And well heater 86, it is configured in this roller portion 84.
Roller portion 84 can be supported on not shown warm-up mill with on the bearing with rotating freely, rotates along the arrow A direction.
In addition, roller portion 84 is by constituting with the lower part: roller core 88, and it is made of for example iron or aluminium; And release layer 90, its covering or be coated on this roller core 88, the external diameter of roller core 88 is for example 30mm, wall thickness is for example 0.7mm.
Release layer 90 is made of release good insulativity material, for example PFA, and thickness is for example 20 μ m.
A plurality of (for example 5) separation claw 92 and roller portion 84 butts.
Well heater 86 is made of for example 2 lamps.
In addition, warm-up mill 70 with tape member 72 opposite sides, relatively be provided with thermostat 94 with warm-up mill 70.
Upstream side at mesh regional N is provided with lead-ingroove 96.Is paper S channeling conduct by 96 pairs of this lead-ingrooves along the recording mediums that the arrow B direction transmits, with the front end guidance of paper S to mesh regional N.
In addition, be provided with lead-out groove 98 in the downstream of mesh regional N.
Tape member 72 is arranged on warm-up mill 70 and pushes between the unit 76, pushes unit 76 by utilization and makes warm-up mill 70 and tape member 72 add press contacts to form mesh regional N, utilize this mesh regional N to transmit paper S.
Tape member 72 is by adding press contacts with warm-up mill 70, is driven in the rotation of warm-up mill 70 and moves to the arrow C direction.
Tape member 72 is by synthetic resin such as for example polyimide, for example forms that wall thickness is the non junction band shape of 75 μ m, and the surface is provided with the release layer that is made of PFA etc.
Pushing unit 76 has: as the pressing pad 110 of pressing component, it pushes warm-up mill 70 across tape member 72; Block 112, it supports pressing pad 110; Housing 114, it supports this block 112 and tape member 72; And bracing frame 116, it supports this housing 114.
That is to say that each component part of pushing unit 76 is block 112, housing 114, bracing frame 116 concerted actions, supports and push pressing pad 110.
Pressing pad 110 is formed by for example LSR elastic bodys such as (aqueous silicone rubbers), at pressing pad 110 (following also be recited as " when pushing ") under tape member 72 is pushed the situation of warm-up mill 70, elastic deformation takes place.
Block 112 is formed section and is roughly " コ " font by the high for example LCP (liquid crystal polymer) of thermotolerance.
In addition, block 112 is pushed pressing pad 110 to warm-up mill 70 sides.
Housing 114 is formed by for example PBT synthetic resin such as (polybutylene terephthalates), and support limit stop 112 is also pushed it to warm-up mill 70 sides, simultaneously, and support belt parts 72.
Bracing frame 116 forms section by metals such as iron or aluminium and is roughly " コ " font, and support housing 114 is also pushed it to warm-up mill 70 sides.
The two end supports of bracing frame 116 is on guiding parts 74.
In addition, guiding parts 74 by preload unit (not shown) to warm-up mill 70 side pretensions.
In Fig. 3～Fig. 5, the related block 112 of expression present embodiment.
Be provided with guide portion 120 as guidance unit at the tape member moving direction upstream side (left side among Fig. 3) of block 112, its pilot tape parts 72 make this tape member 72 approaching to warm-up mill 70 sides (downside among Fig. 3).
Guide portion 120 forms with block 112, forms to warm-up mill 70 side-prominent.
In addition, successfully slide in order to make tape member 72, the shape of the front end of guide portion 120 forms level and smooth curved surface shape.
In Fig. 6～Fig. 8, expression pressing pad 110 is pushed the state of warm-up mill 70 across tape member 72.
By warm-up mill 70 and tape member 72, the formation width is the mesh regional N of W1 (shown in Figure 6).
In Fig. 6, paper S is transmitted to the arrow B direction from tape member moving direction upstream side (left side Fig. 6), enter mesh regional N, warm-up mill 70 is to the rotation of arrow A direction, and tape member 72 is driven in the rotation of warm-up mill 70 and moves to the arrow C direction.
As Fig. 6～shown in Figure 8, by being formed on the guide portion 120 on the block 112, tape member 72 is guided to warm-up mill 70 sides at tape member moving direction upstream side, before mesh regional N, contact with warm-up mill 70, the formation width is the surface of contact of W2 (shown in Figure 6).
In addition, guide portion 120 can be across tape member 72 and warm-up mill 70 butts.
By tape member 72 is contacted with warm-up mill 70 before mesh regional N, the transfer path that can make paper S thus can be before paper S enters mesh regional N near warm-up mill 70 sides, and S heats to paper.
In addition, owing to can before entering mesh regional N, heat paper S, so can improve the photographic fixing efficient of toner picture.
In addition, because the contact area between tape member 72 and the warm-up mill 70, correspondingly increase the area corresponding, so can improve the driven property of tape member 72 with respect to warm-up mill 70 with width W 2.
In addition, owing to form with block 112,, can reduce part count so compare with the situation that roller member for example is set as the guide portion 120 of guidance unit.
In addition, because guide portion 120 can be across tape member 72 and warm-up mill 70 butts, so can make paper S successfully be sent to mesh regional N.
In addition, contact with warm-up mill 70 before mesh regional N by making tape member 72, need not to make lead-ingroove 96 near warm-up mill 70 thus, therefore the transfer path that just can make paper S can suppress lead-ingroove 96 and be heated roller 70 heating near warm-up mill 70 sides.
Under the situation of printed on both sides, when printing overleaf, the printing surface (front) that has been formed with the paper S of image contacts with lead-ingroove 96, if lead-ingroove 96 is heated, toner is broken away from from the printing surface of paper S, on lead-ingroove 96, and the surface of polluting lead-ingroove 96.
In the present embodiment, be heated, so, also can suppress the surface that toner pollutes lead-ingroove 96 even under the situation of printed on both sides owing to can suppress lead-ingroove 96.
And then, can cancel that the surface of lead-ingroove 96 being used to of carrying out prevented that the coating that toner adheres to from handling.
In addition, in above-mentioned present embodiment, show guidance unit and be formed at example on the block 112, but also can make guidance unit be formed at the tape member moving direction upstream side of housing 114.
In addition, in above-mentioned present embodiment, show the example that tape member 72 is contacted with warm-up mill 70 before mesh regional N, but also can make tape member 72 approaching with warm-up mill 70 before mesh regional N.

Claims (6)

1. fixing device, it has:
Rotatable warm-up mill;
Tape member, it is driven in the rotation of described warm-up mill and moves;
Pressing component, it is configured in the opposition side of described warm-up mill with respect to described tape member, pushes described warm-up mill across described tape member;
Support component, it supports described pressing component, and this pressing component is pushed to described warm-up mill side; And
Guidance unit, the tape member moving direction upstream side that it is arranged on described pressing component guides described tape member, makes this tape member near to described warm-up mill side joint.
2. fixing device according to claim 1, wherein,
Described tape member contacts with described warm-up mill pushing the tape member moving direction upstream side that the position of described warm-up mill is compared with described pressing component across described tape member.
3. fixing device according to claim 1 and 2, wherein,
Described guidance unit is made of guide portion, and this guide portion and described support component form.
4. according to any described fixing device in the claim 1 to 3, wherein,
Described guidance unit is made of guide portion, and this guide portion forms to described warm-up mill side-prominent.
5. according to any described fixing device in the claim 1 to 4, wherein,
Described guidance unit is made of guide portion, and this guide portion forms, can be across described tape member and described warm-up mill butt.
6. image processing system, it has any described fixing device in the claim 1 to 5.
CN200810183255.0A 2008-03-07 2008-12-12 Fixation device and image forming device Active CN101526789B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008058064A JP5354439B2 (en) 2008-03-07 2008-03-07 Fixing apparatus and image forming apparatus
JP2008058064 2008-03-07
JP2008-058064 2008-03-07

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CN101526789B CN101526789B (en) 2014-06-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6550799B2 (en) * 2015-03-04 2019-07-31 富士ゼロックス株式会社 Fixing apparatus and image forming apparatus

Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2004184446A (en) * 2002-11-29 2004-07-02 Ricoh Co Ltd Fixing device and image forming apparatus
CN1920694A (en) * 2005-08-25 2007-02-28 富士施乐株式会社 Fluorocarbon resin-coated member, manufacturing method thereof, fixing device using the member, and image forming apparatus using the device

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JPH10198204A (en) * 1997-01-09 1998-07-31 Fuji Xerox Co Ltd Image fixing device
JP3573099B2 (en) * 2001-03-22 2004-10-06 ブラザー工業株式会社 Thermal fixing device and image forming device
JP2005037645A (en) * 2003-07-14 2005-02-10 Fuji Xerox Co Ltd Fixing device and image forming apparatus using same
JP2006091531A (en) * 2004-09-24 2006-04-06 Fuji Xerox Co Ltd Fixing device, belt tubular body and image forming apparatus
JP2006258953A (en) * 2005-03-15 2006-09-28 Fuji Xerox Co Ltd Cooling conveyance device and image forming apparatus using same
JP4815242B2 (en) * 2006-03-24 2011-11-16 株式会社リコー Fixing apparatus and image forming apparatus
JP5028838B2 (en) * 2006-03-30 2012-09-19 富士ゼロックス株式会社 Image fixing apparatus and image forming apparatus
JP2008040321A (en) * 2006-08-09 2008-02-21 Fuji Xerox Co Ltd Elastic member, fixing device, and image forming apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004184446A (en) * 2002-11-29 2004-07-02 Ricoh Co Ltd Fixing device and image forming apparatus
CN1920694A (en) * 2005-08-25 2007-02-28 富士施乐株式会社 Fluorocarbon resin-coated member, manufacturing method thereof, fixing device using the member, and image forming apparatus using the device

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JP2009216800A (en) 2009-09-24
CN101526789B (en) 2014-06-11
JP5354439B2 (en) 2013-11-27

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Address after: Tokyo

Patentee after: Fuji film business innovation Co.,Ltd.

Address before: Tokyo

Patentee before: Fuji Xerox Co.,Ltd.