CN107032168B - Transport path switching device and image forming apparatus - Google Patents
Transport path switching device and image forming apparatus Download PDFInfo
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- CN107032168B CN107032168B CN201610077272.0A CN201610077272A CN107032168B CN 107032168 B CN107032168 B CN 107032168B CN 201610077272 A CN201610077272 A CN 201610077272A CN 107032168 B CN107032168 B CN 107032168B
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- paper
- path
- guide roller
- switching device
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- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007639 printing Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims description 31
- 239000000123 paper Substances 0.000 description 171
- 238000005452 bending Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/58—Article switches or diverters
- B65H29/60—Article switches or diverters diverting the stream into alternative paths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Abstract
The present invention relates to transport path switching device and image forming apparatuses.The transport path switching device has the duplex printing path for carrying out duplex printing by the paper discharge path being discharged by paper discharge unit with paper and using the 2nd path and the 3rd path using the 1st path and the 2nd path, and paper will be walked from the 1st transported to the 2nd path being connect with the 1st path close to the 1st path of fixing section with paper and walks paper by the transported from the 2nd path to the 3rd path with paper the 2nd by having, 3rd path is connect via branch with the 1st path for that will be directed to image forming part with paper, which also has：Branch is set between the 1st path and the 3rd path；Guide roller is set to branch, and covers at least part of branch；And for fan that is cooling or being vented, the paper come from the 2nd route guidance is oriented to the direction in the 3rd path by outer power drive by guide roller, and external force is to transport wind-force caused by the power generated in the process and/or fan with paper.
Description
Technical field
The present invention relates to the use of external force drives the guide roller at fork crossing to realize the device with paper orbit transfer.
Background technology
In the past, the device for changing the paper feed path with paper as the positive and negative rotation using guide roller exists for example Japanese
Recorded device in Unexamined Patent 6-24620.In the apparatus, when guide roller rotates clockwise, due to being rolled up with paper apex
Enter guide roller, thus with paper will orbital direction movement thereto will be to paper and when guide roller rotates counterclockwise
Another orbital direction moves.
[patent document 1] Japanese Unexamined Patent Publication 6-24620 bulletins
But in above-mentioned apparatus disclosed in patent document 1, since the device needs the continuous positive and reverse return of guide roller
Turn, so motor-driven mode is used without exception in power selection, by the transmission of motor and gear, to realize guide roller
The method rotation of son.This means that increase a series of driving structure inside machine to realize that the device, required structure are multiple
It is miscellaneous, while increasing machine cost so that the inner space of the machine of machine becomes larger, and is pursuing the aesthetic of small and exquisite fineness now
Under sight, it is difficult to be realized in actual machine.
Invention content
The present invention is exactly to complete in view of the above problems, it is intended that providing one kind in the existing limited sky of machine
In, the type of drive of motor is not used, and other forms are used instead to drive guide roller, it is making full use of in existing machine
While portion's structure, the increase in the space that increased driving structure is brought is avoided, and realization paper leads to the change in paper path
Transport path switching device and image forming apparatus.
To achieve the goals above, in the transport path switching device of the 1st invention, have and utilize the 1st path and the 2nd
Path carries out the two-sided of duplex printing by the paper discharge path being discharged by paper discharge unit with paper and using the 2nd path and the 3rd path
Printing path, and have by with paper from close to the 1st path of fixing section to the described 2nd connect with the 1st path
The 1st of path conveyance walks paper and walks paper with the 2nd that paper is transported from the 2nd path to the 3rd path by described,
3rd path is connect via branch with the 1st path for being directed to image forming part with paper by described, the carrying channel
Diameter switching device is characterized in that also having：Branch is set between the 1st path and the 3rd path；Guide roller,
It is set to the branch, and covers at least part of the branch；It is described and for fan that is cooling or being vented
Guide roller by outer power drive by from the 2nd route guidance come the direction that the 3rd path is oriented to paper, it is described
External force is wind-force caused by the power generated in the process in conveyance with paper and/or the fan..
According to this constitution, what is utilized due to driving guide roller is with paper in the power that generates in the process of conveyance and/or fan
Generated wind-force, there is no other driving structures are increased, the requirement to space is little, and more to the driving of guide roller
Stablize.
2nd invention is characterized in that, on the basis of 1 invention, also has blowing mouth, wind-force caused by the fan
The guide roller is blowed to drive the guide roller from the fan by the blowing mouth.According to this constitution, can be certainly
By adjustment blowing angle, the control to air flow direction is realized so that air-flow more stablizes the driving of guide roller, and can be with
Avoid the influence to temperature at fixing.
3rd invention is characterized in that, on the basis of 2 invention, also have for around the guide roller into
The inlet scoop of row air draught, the wind blown from the blowing mouth are attracted to the inlet scoop and drive the guide roller rotation to generate
The air-flow turned.According to this constitution, being not easily accessed fixing side with paper, and air flow direction can also be preferably controlled, increase and drive
Dynamic stability.
4th invention is characterized in that, on the basis of 1 invention, also has inlet scoop, the inlet scoop described for leading
Air draught is carried out around to roller so that the air-flow for driving the guide roller rotation is generated around the guide roller.
According to this constitution, can freely adjust the angle, realize the control to air flow direction so that air-flow to the driving of guide roller more
Stablize.
5th invention is characterized in that on the basis of any one of the 1st to the 4th invention invention, the fan is configured
In the paper discharge unit.According to this constitution, the fan can be made to have both carries out cooling function to the paper of discharge so that in machine
The space utilization in portion is more reasonable.
6th invention is characterized in that, on the basis of any one of the 1st to the 5th invention invention, produced by the fan
Wind drive the guide roller to rotate to the part in the outside positioned at the path of conveyance paper of the guide roller.
It is flowed in paper feed track according to this constitution, avoiding air-flow, greatly avoids influence of the air-flow to fixing section temperature.
7th invention is characterized in that, on the basis of any one of the 1st to the 6th invention invention, the guide roller quilt
It is arranged to rotate towards the conveyance direction with paper.According to this constitution, guide roller can be prevented by inside machine
Air-flow drives, and rotation counterclockwise occurs, thus the case where being affected to normal paper feed.
8th invention is characterized in that, on the basis of any one of the 1st to the 7th invention invention, the guide roller quilt
Be formed as gear-like.According to this composition so that guide roller becomes easier in stress and in terms of being involved in paper.
9th invention is characterized in that, on the basis of any one of the 1st to the 8th invention invention, is also had and is cut with paper
Guide rail, this is arranged at paper incision guide rail below the guide roller, described to be directed to paper incision guide rail via this with paper
The 1st paper feed surface side.According to this constitution, can ensure that normally logical paper preferably so that with paper incision guide roller,
It avoids and the phenomenon that paperboard occurs due to itself bending direction in orbit with paper.
10th invention provides a kind of image forming apparatus, which is characterized in that has any one of the 1st to the 9th invention institute
The transport path switching device stated.According to this constitution, effect as above can be realized.
According to the composition of the present apparatus in-house space is avoided while successfully realizing change paper paper feed path
Increase, and since driving force used is external force, increase so avoiding and increasing the cost brought of driving.
Description of the drawings
Fig. 1 is the sectional view along the paper conveyance direction of image forming apparatus.
Fig. 2 is the schematic diagram illustrated to branch.
Fig. 3 is the figure of the carrying channel switching part of the present embodiment from face side.
Fig. 4 (A) to Fig. 4 (C) is the figure schematically illustrated to guide roller, wherein Fig. 4 (A) shows guide roller
The stereogram of son, Fig. 4 (B) show the main toothed portion after disassembling guide roller, and Fig. 4 (C), which is shown, disassembles guide roller
Secondary toothed portion afterwards.
Fig. 5 (A) to Fig. 5 (F) is the schematic diagram that the action of carrying channel switching part is specifically described.
Fig. 6 is the stereogram for the variation for showing guide roller.
Fig. 7 shows the schematic diagram of the setting paper incision guide rail below guide roller.
Symbol description in figure：
A1：Blowing mouth；A2：Inlet scoop；M：Branch；L1：1st walks paper；L2：2nd walks paper；P：Use paper；R1：1st
Carrying channel；R2：2nd carrying channel；R3：3rd carrying channel；G：Guide roller；2：With paper conveying unit；3：Image forming part；4：Fixing
Portion；5：With paper discharge unit；6：Image reading unit；X1：1st position；X2：2nd position；X3：3rd position；F1：1st fan；F2：
2nd fan；S：Pipeline；B：Branch point
Specific implementation mode
Hereinafter, with reference to attached drawing, embodiments of the present invention will be described in detail.
＜ first embodiments ＞
Fig. 1 is the sectional view along the conveyance direction of the paper of image forming apparatus 1.In the figure, by taking duplicator as an example
Image forming apparatus 1 is illustrated.As shown in the drawing, image forming apparatus 1 has successively from downside to upside is transported with paper
Portion 2, image forming part 3, fixing section 4, with paper discharge unit 5 and image reading unit 6.
With being provided with sheet feed stacker 11 and feed rolls 12 in paper conveying unit 2.It is accommodated with laminated arrangement in sheet feed stacker 11
Multiple use paper P.P1 pieces piece of paper in sheet feed stacker 11 is taken out to image forming part 3 and is transported by feed rolls 12.
Image forming part 3 is provided with the photosensitive drums 13 towards arrow direction rotation driving.And it is arranged along its direction of rotation
There are charged device 14, exposer 15, imagescope 16, transfer roll 17 and cleaner 18.Transfer roll 17 and the surface of photosensitive drums 13 are (following
Referred to as rouse surface) it abuts and forms transfer roll clamping part T.The drum surface of photosensitive drums 13 uniform charged due to charged device 14.Uniformly
Drum surface after electrification is exposed 15 irradiation light of device, removes the charge of irradiation part to form electrostatic latent image.The electrostatic latent image
It is attached to toner by developer 16, to which development is toner image.It is formed in the toner image on bulging surface in this way because of sense
The rotation of light drum 13 and be directed to transfer roll clamping part T, and by transfer roll 17 be transferred to be oriented to come paper P on.Toning
The transfer residual toner that the drum surface of photosensitive drums 13 after the transfer of agent picture is remaining is removed by cleaner 18, and since electrification
It is formed for next image.On the other hand, the paper P after toner image transfer is directed to fixing section 4.
In fixing section 4, it is provided with fixing roller (heating roller) 19 and crimps and formed the pressurization of fixing roller clamping part N with it
Roller 20.Paper P after toner image transfer is fixed the clamping conveyance of roller clamping part N, is fixed the heating of roller 19 at this time while being added
Pressure roller 20 pressurizes, and thus the toner on surface is melted fixed to be fixed.With paper discharge unit 5, in addition to connecting via branch M
Except logical the 1st carrying channel R1, the 2nd carrying channel R2 and the 3rd carrying channel R3, be additionally provided with discharge roller pair 34, discharge tray 35, again into
To roller 36 etc..Paper P after above-mentioned toner image fixing is in the case where being only formed on its surface image, via the 1st conveyance
Road R1, branch M, the 2nd carrying channel R2 are expelled to by discharge roller pair 34 in discharge tray 35.So paper discharge path is at least by the 1st
Carrying channel R1 and the 2nd carrying channel R2 are constituted.About branch M, it is described in detail later.
In addition, in the case where forming image with the surface of paper P and the both sides at the back side, toner image has been fixed on surface
With paper P the 2nd carrying channel R2 is directed to from the 1st carrying channel R1.Also, after rear end has passed through branch M, pass through discharge roller pair 34
Reversion (reverse rotation), rear end is directed to the 3rd carrying channel R3 to invert in realization table as front end.Then, by again
Feed rolls 36 etc. are supplied to image forming part 3 again, with the surface the case where in the same manner as overleaf transfer toner image.So
Duplex printing path is at least made of the 2nd carrying channel R2 and the 3rd carrying channel R3.This is being directed to fixing section 4 and is being fixed with paper P
After toner image, it is directed to the 1st carrying channel R1, branch M, the 2nd carrying channel R2, discharge is expelled to by discharge roller pair 34
On disk 35.
Image reading unit 6 is configured at the figure of the original copy on document board (not shown) by reading sensor reading (not shown)
The image information of reading is sent to above-mentioned exposer 15 by image planes.Exposer 15 is based on the image information, is carried out to laser
ON/OFF control forms electrostatic latent image.
The entirety of image forming apparatus 1 is illustrated above.Then, present embodiment is removed with reference to Fig. 2 and Fig. 3
Road switching part 111 is sent to illustrate.
If Fig. 2 and institute Fig. 3 show, carrying channel switching part 111 has the 1st carrying channel R1, the 2nd carrying channel R2, the 3rd carrying channel
Paper L1 is walked in R3, the 1st, and the 2nd walks paper L2 and branch M.1st carrying channel R1, the 2nd carrying channel R2 and the 3rd carrying channel R3 are
It is interconnected in branch M.In the present embodiment, branch M includes branch point B, the position of branch point B as shown in Fig. 2,
When being more than branch point B with the front end (or rear end) of paper, it is believed that with the front end (or rear end) of paper be more than branch M.1st removes
The vertical line that paper L1 is walked in the region of road R1 and the 2nd carrying channel R2 with branch point B to the 1st is sent to demarcate.2nd carrying channel R2 and the 3rd is removed
The vertical line that paper L2 is walked in the region of road R3 with branch point B to the 2nd is sent to demarcate.1st, which walks paper L1, refers to the 1st carrying channel R1 and the 2nd and removes
The face for conveyance paper of the side of road R2 connections is sent, the 2nd, which walks paper L2, refers to the 2nd carrying channel R2 and the 3rd carrying channel R3 connections
Side the face for conveyance paper.
Branch M is used for carrying out branch with the transport path of paper, in the case of conveyance in the 1st carrying channel R1 with paper,
In the case of being directed to the 2nd carrying channel R2 when by branch M, and conveyance is inverted in the 2nd carrying channel R2, passing through
The 3rd carrying channel R3 is directed to when branch M.1st carrying channel R1 is proximate to the fixing section 4 (not shown) for making toner image be fixed
Carrying channel, as shown in Figures 2 and 3, by fixing has the paper P of toner image to be directed to branch M on surface by fixing section 4.
The bending section C being slowly bent is formed in the junction of the 1st carrying channel R1 and the 2nd carrying channel R2.Along for conveyance with paper P
1 walks paper L1, and the paper P come is oriented to by branch M, on one side along bending section C from the 1st carrying channel R1 in the directions arrow K1
It is slowly bent and is directed to the 2nd carrying channel R2 on one side.
2nd carrying channel R2 is created as substantially linear and slowly inclined carrying channel.2nd carrying channel R2 will be removed from the 1st
It send road R1 to be oriented to the paper P come to be oriented to the directions arrow K1.In addition, in reversion, along the 2nd paper feed that paper reversion will be used to transport
Face L2 or the 1st walks paper L1 and (walks paper L1 contacts with the 1st to be walked along the 1st due to by gravity, existing with paper front end
The possibility that paper L1 advances), the branch of branch M is crossed in the front end of the paper P after the reversion being oriented to the directions arrow K2
Point B, and rear end be more than branch M branch point B between to being oriented to paper P.
The part of 3rd carrying channel R3 being located near branch M is shaped generally as linearly, the part and the above-mentioned the 2nd
Carrying channel R2 is substantially linearly connected to.3rd carrying channel R3 is before the paper P that the 2nd carrying channel R2 is oriented to after the reversion come
End be more than branch M branch point B after, further by this with paper P to the directions arrow K2 guiding.In addition, in the present embodiment,
When the back side of the paper P after surface has been fixed image (toner image) will also form image (toner image), with paper P from this
3rd carrying channel R3 is supplied to image forming part again.
Paper discharge unit 34 has the distributing roller 34a being arranged in upside and the distributing roller abutted from downside with distributing roller 34a
34b.Distributing roller 34a is configured to positive rotation and reverse rotation.Distributing roller 34b is according to the driven rotation of rotation of distributing roller 34a.Row
Paper portion 34 will use paper P to be oriented to the directions arrow K1, and passing through branch with the rear end of paper P by the positive rotation of distributing roller 34a
It stops rotating after the branch point B of M.Then, carrying out reverse rotation will use paper P to be oriented to the directions arrow K2, keep the front end after reversion super
Branch M is crossed hence into the 3rd carrying channel R3.
Guide roller G is set to branch M, and covers at least part of the 1st carrying channel R1, for that will come from the 1st
The paper P of carrying channel R1 imports the 2nd carrying channel R2, and the paper P of the reversion is imported the 3rd when this is with paper P reversion conveyances
Carrying channel R3.In addition, in the 2nd carrying channel R2 relative to the side of distributing roller 34a, 34b far from branch M, configured with a pair
Fan F1 and F2.Fan F1 and F2 is used to cool down the paper P for being discharged roller 34a and 34b discharge.Shown in Fig. 3
At 1st position X1, it is provided with the blowing mouth A1 that pipeline S is connect with the fan F1.Blowing mouth A1 is produced fan F1
Raw wind-force, which is produced by boasting, drives guide roller G rotations.Certainly, blowing mouth A1 can also be connect with fan F2, or with fan F1
And fan F2 is connected together.In addition, at the 2nd position X2 shown in Fig. 3, it is provided with inlet scoop A2, in guide roller G
Around carry out air draught.In the present embodiment, blown from blowing mouth A1 it is distinguished and admirable enter inlet scoop A2 generate air-flow, the air-flow band
Action-oriented roller G is rotated.In addition, in the present embodiment, guide roller G is formed the shape as shown in Fig. 4 (A)
Shape, and with the main toothed portion of gear-like as shown in Fig. 4 (B) and Fig. 4 (C) and foliated secondary toothed portion.Pass through to be formed
Shape so can mitigate the quality of guide roller so that be easier to by during the conveyance with paper power or come from fan
The wind drive of F1 rotates.In addition, the main toothed portion and secondary toothed portion can be with pin bond structures, the faces D structure or other polyhedrons
The mode of structure combines, as long as so that the driving between guide roller G becomes more stable, the more conducively knot of the driving of external force
Structure.Wherein, main toothed portion is located at the inside to the carrying channel being oriented to paper P, is responsible for being transported with paper, secondary tooth
Part is located at the outside to the carrying channel being oriented to paper P.When fan F1 starts to work, generated air-flow passes through pipeline
S blows to the blade of the pair toothed portion, to which the guide roller is driven to rotate.By the way that guide roller G is so arranged,
Flowing of the air-flow in paper feed track is avoided, influence of the air-flow to fixing section temperature is greatly avoided.In present embodiment
In, guide roller G is formed to have main toothed portion and secondary toothed portion, but it is not necessary to, as long as air-flow can be configured to
Guide roller is blowed on the outside of carrying channel to avoid the composition of air flow direction fixing section.
In the following, with reference to Fig. 5 (A)-Fig. 5 (F), the action of carrying channel switching part 111 is specifically described.First, to
The situation of normal paper feed when paper P is oriented to from from the 1st carrying channel R1 to the 2nd carrying channel R2 illustrates.At this point, with paper P due to
It may be bent in fixing section stress, therefore the shape for entering the 1st carrying channel R1 can be also slightly different.
As shown in Fig. 5 (A), when be used to be bent in fixing section stress with paper P and along left rail from the 1st carrying channel R1 to the
2 directions carrying channel R2 move when, guide roller G on paper P without influence, with the normal paper feeds of paper P.In addition, due to being led with paper P
Extruding to roller G, to having return action with the deformation of paper P, to having improvement result with the later movements of paper P.At this point, due to
Paper P is normal paper feed, therefore may be controlled to blowing mouth A1 and inlet scoop A2 does not work.It is of course also possible to control into blowing mouth
A1 and inlet scoop A2 work to generate air-flow, in such a case, it is possible in position by blowing mouth A1 settings,
So that front end is caused to be bent to the 3rd sides carrying channel R3 stress because of air-flow using paper P, as guide roller G
Blocking is without causing to be directed to the 3rd carrying channel R3 with paper P.
As shown in Fig. 5 (B), when with paper P not fixing section stress be bent and from the 1st carrying channel R1 to the 2nd carrying channel side R2
To when movement, it is involved in guide roller G with the front end of paper P.In this state, due to transporting the power generated in the process with paper P,
Guide roller G is driven to rotate, and enters section E, the normal paper feed of realization paper to be directed to roller G with paper P and be driven.Equally
Ground may be controlled to blowing mouth A1 and inlet scoop A2 do not work at this point, due to being normal paper feed with paper P.Certainly, also may be used
It is worked at blowing mouth A1 and inlet scoop A2 to generate air-flow with control, in such a case, it is possible to which blowing mouth A1 is set
It sets in position, so that causing front end to the 3rd sides carrying channel R3 stress bending because of air-flow using paper P, also can
Because the blocking of guide roller G is directed to the 3rd carrying channel R3 without causing with paper P.In addition, due to producing air-flow,
The driving rotation of guide roller G becomes to be more prone to.
As shown in Fig. 5 (C), when with paper P due to being bent in fixing section stress and along the right rail of the 1st carrying channel R1 from the
When 1 carrying channel R1 is moved to the 2nd directions carrying channel R2, it is involved in guide roller G with the front end of paper P.In this state, due to
Paper P bends during conveyance, and to generate stronger elastic force, generation makes the power that guide roller G is rotated in the forward direction, thus leads
It is driven to rotate to roller G.At this point, since the space that guide roller G walks with the 1st paper is smaller, so being involved in the front end of paper P
Measure less, and the space of section E is larger, after being detached from guide roller G with the front end of paper P, is replied naturally with paper P, thus use paper P
It is directed to roller G and drives and enter section E, the normal paper feed of realization paper.In addition, due to being squeezed by guide roller G with paper P
Pressure, therefore to having return action with the deformation of paper P, to having improvement result with the later movements of paper P.Similarly, at this point, due to
Paper P is normal paper feed, therefore may be controlled to blowing mouth A1 and inlet scoop A2 does not work.It is of course also possible to control into blowing mouth
A1 and inlet scoop A2 work to generate air-flow, in such a case, it is possible in position by blowing mouth A1 settings,
So that front end is caused to be bent to the 3rd sides carrying channel R3 stress because of air-flow using paper P, as guide roller G
Blocking is without causing to be directed to the 3rd carrying channel R3 with paper P.In addition, due to producing air-flow, the driving of guide roller G
Rotation becomes to be more prone to.
Situation when paper when then, to being oriented to from the 2nd carrying channel R2 to the 3rd carrying channel R3 with paper P inverts carries out
Explanation.As shown in Fig. 5 (D), due to being bent in fixing section stress and in the case of be bent upwards with paper P, from the 2nd carrying channel
When R2 is moved to the 3rd carrying channel R3, due to the bending direction with paper front end, it will not be involved in guide roller G with paper front end, can only be taken
On guide roller G, and G is driven to rotate, enters section E to be directed to roller G with paper P and be driven, realize and use paper paper feed track
Switching.At this point it is possible to control into blowing mouth A1 and inlet scoop A2 does not work.It is of course also possible to control into blowing mouth A1 and suction
Air port A2 works to generate air-flow, in this case, due to producing air-flow, the driving rotation of guide roller G
Change to be more prone to, in addition, being raised upwards due to the air-flow with the front end of paper P, the 1st carrying channel R1 will not be directed to
And it is directed to the 3rd carrying channel R3, more stablized with the switching of paper paper feed track.
As shown in Fig. 5 (E), when due in the case where fixing section non-stress bending with paper P to not deformed, from the
When 2 carrying channel R2 are moved to the 3rd carrying channel R3, it is involved in guide roller G with the front end of paper P.In this state, due to paper P
In the power that conveyance generates in the process, guide roller G is driven to rotate, and enters section E to be directed to roller G with paper P and be driven, real
The switching of current paper paper feed track.Similarly, at this point it is possible to control into blowing mouth A1 and inlet scoop A2 does not work.Certainly, also may be used
It works to generate air-flow at blowing mouth A1 and inlet scoop A2 with control, in this case, due to producing air-flow, because
The driving rotation of this guide roller G becomes to be more prone to, in addition, being raised upwards due to the air-flow with the front end of paper P, no
The 1st carrying channel R1 can be directed to and be directed to the 3rd carrying channel R3, more stablized with the switching of paper paper feed track.
As shown in Fig. 5 (F), in the case of being bent downwardly with paper P due to being bent in fixing section stress, removed from the 2nd
When road R2 being sent to be moved to the 3rd carrying channel R3, blowing mouth A1 and inlet scoop A2 work.At this point, due to producing air-flow, it is oriented to
Roller G is driven by the air-flow to be driven to rotate, meanwhile, it is raised, is rolled up upwards due to the air-flow with the front end of paper P
Enter guide roller G and enter section E to be directed to roller G and drive, realizes the switching with paper paper feed track.
In the present embodiment, since guide roller utilizes is external force for driving, there is no increasing other driving structures,
Requirement to space is little.Also, due to being provided with blowing mouth and inlet scoop, can freely it adjust the angle, realization pair
The control of air flow direction so that air-flow more stablizes the driving of guide roller.In addition, since guide roller has main toothed portion
With secondary toothed portion, main toothed portion is located at the inside to the path being oriented to paper, and secondary toothed portion is located at the outside in the path,
Wind caused by fan F1, to drive guide roller G to rotate, therefore avoids air-flow in paper feed to the blade of secondary toothed portion
Flowing, greatly avoids influence of the air-flow to fixing section temperature in track.
<Variation>
In the present embodiment, it is configured to that blowing mouth A1 is arranged at the 1st position X1, air draught is set at the 2nd position X2
Mouth A2, but not limited to this, it can also be as shown in figure 3, being configured to set gradually institute along the rotationally clockwise direction of guide roller G
State the 1st position X1, the 2nd position X2 and the 3rd position X3 positioned at branch M, with only the 1st position X1, the 2nd position X2 with
And the 3rd position X3 setting blowing mouth A1 or only the 1st position X1, the 2nd position X2 and the 3rd position X3 be arranged inlet scoop A2 or
It is set respectively in the 1st position X1 and the 2nd position X2, the 2nd position X2 and the 3rd position X3, the 1st position X1 and the 3rd position X3
The mode of blowing mouth A1 and inlet scoop A2 are set, blowing mouth and inlet scoop are set.According to this constitution, above-mentioned in addition to that can realize
Except effect, additionally it is possible to make full use of the gap of upper and lower interorbital so that the space utilization inside machine is more reasonable.
In addition, in the present embodiment, preferably installing clutch in the apex of guide roller G so that guide roller can only
It rotates clockwise, and cannot rotate counterclockwise.Thus prevent guide roller G from being driven and occurred counterclockwise by the air-flow inside machine
Rotation, thus to positive normal open paper tape come the case where influence.
In addition, in the present embodiment, the main toothed portion of guide roller G is formed gear-like, but not limited to this, also may be used
To be formed as shape shown in fig. 6.By being set as this shape, enabling to guide roller G in stress and being involved in paper side
Face becomes to be more prone to.In addition, main toothed portion higher material of friction coefficient etc. such as can also use rubber.For being formed
Shape and the material that uses, be not particularly limited, as long as the said effect of the present invention can be realized.
In addition, on the basis of present embodiment, it can be to be used as shown in fig. 7, being further arranged below guide roller G
Paper cuts guide rail, and the 1st paper feed surface side is directed to paper incision guide rail via this with paper.According to this constitution, can preferably make
Guide roller G is cut with paper, ensure that normally logical paper, is avoided with paper in the 1st carrying channel R1 due to itself bending side
To and there is the phenomenon that paperboard.
It should be understood that the above-mentioned specific implementation mode of the present invention is used only for exemplary illustration or explains the present invention's
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (10)
1. a kind of transport path switching device has the row that will be discharged by paper discharge unit with paper using the 1st path and the 2nd path
Paper path and the duplex printing path that duplex printing is carried out using the 2nd path and the 3rd path, and have by with paper from close
Paper is walked to the 1st of the 2nd path conveyance being connect with the 1st path and will be described in the 1st path of fixing section
Paper is walked in the 2nd transported from the 2nd path to the 3rd path with paper, and the 3rd path is via branch and the described 1st
Path is connected for being directed to image forming part with paper by described, which is characterized in that also having：
Branch is set between the 1st path and the 3rd path；
Guide roller is set to the branch, and covers at least part of the branch；And
Fan for cooling down or being vented,
The guide roller will be oriented to the 3rd path from the described of the 2nd route guidance by outer power drive with paper
Direction,
The external force is wind-force caused by the power generated in the process in conveyance with paper and/or the fan.
2. transport path switching device according to claim 1, which is characterized in that
Also there is blowing mouth, wind-force caused by the fan blows to the guide roller by the blowing mouth from the fan
To drive the guide roller.
3. transport path switching device according to claim 2, which is characterized in that
Also there is the inlet scoop for carrying out air draught around the guide roller, the wind blown from the blowing mouth to be attracted to
The inlet scoop drives the air-flow of the guide roller rotation to generate.
4. transport path switching device according to claim 1, which is characterized in that
Also there is inlet scoop, the inlet scoop around the guide roller for carrying out air draught so that in the guide roller
Around generate the air-flow for driving guide roller rotation.
5. transport path switching device as claimed in any of claims 1 to 4, which is characterized in that
The fan is configured in the paper discharge unit.
6. transport path switching device as claimed in any of claims 1 to 4, which is characterized in that
Wind caused by the fan is to the part in the outside positioned at the path of conveyance paper of the guide roller thus band
The dynamic guide roller rotation.
7. transport path switching device as claimed in any of claims 1 to 4, which is characterized in that
The guide roller is configured to rotate towards the conveyance direction with paper.
8. transport path switching device as claimed in any of claims 1 to 4, which is characterized in that
The guide roller is formed gear-like.
9. transport path switching device as claimed in any of claims 1 to 4, which is characterized in that
Also have and cut guide rail with paper, this is arranged at paper incision guide rail below the guide roller, described to use paper via this
It is directed to the 1st paper feed surface side with paper incision guide rail.
10. a kind of image forming apparatus, which is characterized in that with the carrying channel quarter sawing described in any one of claim 1-9
Changing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077272.0A CN107032168B (en) | 2016-02-03 | 2016-02-03 | Transport path switching device and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077272.0A CN107032168B (en) | 2016-02-03 | 2016-02-03 | Transport path switching device and image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107032168A CN107032168A (en) | 2017-08-11 |
| CN107032168B true CN107032168B (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610077272.0A Expired - Fee Related CN107032168B (en) | 2016-02-03 | 2016-02-03 | Transport path switching device and image forming apparatus |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6911898B2 (en) * | 2019-09-30 | 2021-07-28 | 大日本印刷株式会社 | Thermal transfer printing device and reversing unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000044131A (en) * | 1998-07-24 | 2000-02-15 | Mita Ind Co Ltd | Sheet carrying device and image forming device |
| CN1616229A (en) * | 2003-11-12 | 2005-05-18 | 佳能株式会社 | Recording apparatus |
| CN1931694A (en) * | 2005-09-13 | 2007-03-21 | 株式会社东芝 | Sheet-like paper products conveying route switching apparatus |
| CN102014229A (en) * | 2009-09-04 | 2011-04-13 | 村田机械株式会社 | Image scanner and method for feeding document |
| CN102189777A (en) * | 2010-02-22 | 2011-09-21 | 精工爱普生株式会社 | Fluid ejecting apparatus |
| CN102219137A (en) * | 2010-04-19 | 2011-10-19 | 村田机械株式会社 | Auto document feeder and a document reader with the auto document feeder |
| JP2014214027A (en) * | 2013-04-30 | 2014-11-17 | キヤノンファインテック株式会社 | Sheet transportation device and image formation device provided with the same |
-
2016
- 2016-02-03 CN CN201610077272.0A patent/CN107032168B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000044131A (en) * | 1998-07-24 | 2000-02-15 | Mita Ind Co Ltd | Sheet carrying device and image forming device |
| CN1616229A (en) * | 2003-11-12 | 2005-05-18 | 佳能株式会社 | Recording apparatus |
| CN1931694A (en) * | 2005-09-13 | 2007-03-21 | 株式会社东芝 | Sheet-like paper products conveying route switching apparatus |
| CN102014229A (en) * | 2009-09-04 | 2011-04-13 | 村田机械株式会社 | Image scanner and method for feeding document |
| CN102189777A (en) * | 2010-02-22 | 2011-09-21 | 精工爱普生株式会社 | Fluid ejecting apparatus |
| CN102219137A (en) * | 2010-04-19 | 2011-10-19 | 村田机械株式会社 | Auto document feeder and a document reader with the auto document feeder |
| JP2014214027A (en) * | 2013-04-30 | 2014-11-17 | キヤノンファインテック株式会社 | Sheet transportation device and image formation device provided with the same |
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| Publication number | Publication date |
|---|---|
| CN107032168A (en) | 2017-08-11 |
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