CN109995961A - Paper transport mechanism, image forming apparatus and image formation system - Google Patents
Paper transport mechanism, image forming apparatus and image formation system Download PDFInfo
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- CN109995961A CN109995961A CN201711479070.XA CN201711479070A CN109995961A CN 109995961 A CN109995961 A CN 109995961A CN 201711479070 A CN201711479070 A CN 201711479070A CN 109995961 A CN109995961 A CN 109995961A
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- mentioned
- paper
- switching part
- guide roller
- carrying channel
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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
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00588—Conveying sheets before or after scanning to the scanning position
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
- H04N1/121—Feeding arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/39—Scanning
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Abstract
The present invention relates to paper transport mechanism, image forming apparatus and image formation systems, the paper transport mechanism has the first carrying channel, the second carrying channel and third carrying channel, interconnecting piece between the first carrying channel and the second carrying channel is provided with switching part, the mutual interconnecting piece of each carrying channel is provided with reception hole, the guide roller for guiding paper is provided in reception hole, when the end of switching part is not accommodated in reception hole, guide roller is prominent from reception hole.Thereby, it is possible to avoid the guide pass of paper and arc-shaped from generating friction, and then paper scratch can be prevented, transport the problems such as bad even paper jam.
Description
Technical field
The present invention relates to paper transport mechanism, image forming apparatus and image formation system, more particularly, to can keep away
The guide pass for exempting from paper and arc-shaped generates friction, and then paper scratch can be prevented, transport bad even paper jam etc.
Paper transport mechanism, image forming apparatus and the image formation system of problem.
Background technique
In the paper transport mechanism of existing image forming apparatus, paper path bifurcated usually is removed being provided with switching pawl
Portion, the guide pass with arc-shaped, the guide pass bending degree is larger, when the ground paper of high rigidity passes through the guide pass, due to leading
The radius of curvature of rail level is smaller, thus paper inevitably with guide rail face contact, generate friction, and then occur paper scratch,
The problems such as transporting bad even paper jam.
For the guide pass with arc-shaped, scratching roller is set sometimes through in circular arc big position, is connect to reduce
Frictional resistance is touched, however, scratching roller can not be added when being provided with the incorporating section of switching pawl or storage switching pawl herein
Son.
Summary of the invention
The present invention be it is completed to solve the above problems, its purpose is to provide can be avoided paper and arc-shaped
Guide pass generates friction, and then the paper transporter that can be prevented paper scratch, transport the problems such as bad even paper jam
Structure, image forming apparatus and image formation system.
(1): a kind of paper transport mechanism, comprising: the first carrying channel；Second carrying channel is located at above-mentioned first carrying channel
Paper conveyance direction downstream side, and be connected with above-mentioned first carrying channel；Third carrying channel is located at above-mentioned first carrying channel
Paper conveyance direction downstream side is different from above-mentioned second carrying channel, and is formed with defined angle with above-mentioned first carrying channel；
And switching part, it is movable in the range of above-mentioned each carrying channel mutual interconnecting piece, for will be from above-mentioned first carrying channel
The conveyance direction of the paper moved switches between above-mentioned second carrying channel and above-mentioned third carrying channel；Above-mentioned paper is removed
It sending mechanism to be characterized in that, above-mentioned interconnecting piece is provided with reception hole, above-mentioned reception hole is used to store the end of switching part,
It is provided with the guide roller for guiding paper in above-mentioned reception hole, is not accommodated in above-mentioned reception hole in the end of above-mentioned switching part
When, above-mentioned guide roller is prominent from above-mentioned reception hole.
Since when the end of switching part is not accommodated in reception hole, guide roller is prominent from reception hole, specifically, guide roller
It is prominent from reception hole relative to the 7th transporting guide rail for being located at interconnecting piece, so the paper moved will not be with the of arc-shaped
The contact of seven transporting guide rails, the guide pass that can be avoided paper and arc-shaped generate friction, so can prevent paper scratch,
The problems such as transporting bad even paper jam.
(2): the paper transport mechanism in above-mentioned (1) can also be accommodated in above-mentioned storage in the end of above-mentioned switching part
Kong Shi, above-mentioned guide roller are located at the paper conveyance direction downstream side of above-mentioned switching part.
Since when the end of switching part is accommodated in reception hole, guide roller is located under the paper conveyance direction of switching part
Side is swum, so the paper moved is directly contacted with switching part, thus, it is possible to the guidance by switching part swimmingly
Transport paper.
(3): the paper transport mechanism in above-mentioned (1) or (2), can also be movable with above-mentioned guide roller, the position of above-mentioned guide roller
It sets and is not accommodated in above-mentioned storage with the end of above-mentioned switching part when the end of above-mentioned switching part is accommodated in above-mentioned reception hole
When hole compared to be located at and logical paper opposite side.
The position of guide roller is when the end of switching part is accommodated in reception hole and the end of switching part is not accommodated in receipts
Receive hole when with logical paper opposite side in other words enter the process of reception hole by the end in switching part compared to being located at
In, keep guide roller Xiang Yutong paper opposite side mobile, after entering movement, guide roller can be made to be located in switching part
The paper conveyance direction downstream side of switching part, so that the paper moved is directly contacted with switching part, thus, it is possible to logical
It crosses the guidance of switching part and swimmingly transports paper.
(4): the paper transport mechanism in above-mentioned (1)~(3) can also be set to roll shaft with above-mentioned guide roller, cut above-mentioned
Change component end enter above-mentioned reception hole during, above-mentioned roll shaft and above-mentioned switching part link, and thus drive above-mentioned lead
It is mobile to roller Xiang Yutong paper opposite side.
Drive guide roller Xiang Yutong paper opposite side mobile, by the linkage of roll shaft and switching part so as to keep away
The pressing force for exempting from switching part directly acts on guide roller, thus, it is possible to prevent guide roller from abrasion etc. occurs, and then prevents
Situations such as paper abrades.
(5): the paper transport mechanism in above-mentioned (1)~(3) can also be set to roll shaft with above-mentioned guide roller, cut above-mentioned
Change component end enter above-mentioned reception hole during, above-mentioned switching part press above-mentioned guide roller and make above-mentioned guide roller to
It is mobile with logical paper opposite side.
Pressing guide roller by switching part keeps guide roller Xiang Yutong paper opposite side mobile, and thus, it is possible to simplify to tie
Structure is avoided the problem that because using other linkage mechanisms or control device due to bring increased costs.
(6): the paper transport mechanism in above-mentioned (5) can also be provided with multiple above-mentioned guide rollers, position on above-mentioned roll shaft
It is greater than the outer diameter for the guide roller being located in paper conveying range in the outer diameter of the guide roller outside paper conveying range, in above-mentioned switching
During the end of component enters above-mentioned reception hole, the pressing of above-mentioned switching part be located at the guide roller outside paper conveying range and
The multiple above-mentioned guide roller Xiang Yutong paper opposite side for making to be set on above-mentioned roll shaft are mobile.
Make to be set to multiple guiding on roll shaft since switching part pressing is located at the guide roller outside paper conveying range
Xiang Yutong paper opposite side is mobile simultaneously for roller, directly presses and can connect with the paper moved so can be avoided switching part
The guide roller of touching being located in paper conveying range, thus, it is possible to prevent the guide roller being located in paper conveying range from wearing
Deng, and then prevent situations such as paper abrades.
(7): the paper transport mechanism in any one of (1)~(6), it can also be in above-mentioned reception hole and above-mentioned guiding
Roller is provided with the elastomeric element pushed always to above-mentioned guide roller towards logical paper side with logical paper opposite side, upper
State switching part end exit above-mentioned reception hole during, above-mentioned guide roller court is made by the pushing of above-mentioned elastomeric element
It is mobile to logical paper side.
Keep guide roller mobile towards paper side is led to by the pushing of elastomeric element, it is thus possible to by simple and cheap
Structure swimmingly realizes the ejection operation of guide roller.
(8): in the paper transport mechanism of above-mentioned (1), can also enter or exit in the end of above-mentioned switching part
During stating reception hole, above-mentioned switching part is not contacted with above-mentioned guide roller.
Since during the end of switching part enters or exits reception hole, switching part is not contacted with guide roller,
So no matter whether the end of switching part is accommodated in reception hole, guide roller is prominent from above-mentioned reception hole always and can play
The effect of guidance, specifically, either to the second carrying channel transport paper when, or to third carrying channel transport paper when, all
It can be guided using guide roller, thus, it is possible to play excellent guidance effect, moreover, switching part does not connect with guide roller
Touching, additionally it is possible to situations such as preventing guide roller from abrasion etc. occurs, and then prevent paper scratch.
(9): a kind of image forming apparatus has the paper transport mechanism of any one of above-mentioned (1)~(8).
Whole effect brought by paper transport mechanism as a result, with any one of above-mentioned (1)~(8).
(10): the image formation mechanism of image a kind of image formation system, which is characterized in that have: is formed on paper；
For detecting the testing agency of the paper image abnormal conditions by above-mentioned image formation mechanism；And appoint in above-mentioned (1)~(8)
Paper transport mechanism described in one, in above-mentioned paper transport mechanism, switching part is according to the detection knot of above-mentioned testing agency
Fruit will switch between the second carrying channel and third carrying channel from the conveyance direction for the paper that the first carrying channel moves.
Whole effect brought by paper transport mechanism as a result, with any one of above-mentioned (1)~(8).
Detailed description of the invention
Fig. 1 is the integrally-built figure for indicating image forming apparatus of the invention.
Fig. 2 is the schematic diagram for indicating the paper transport mechanism of first embodiment of the invention.
Fig. 3 is the schematic diagram for indicating the paper transport mechanism of second embodiment of the present invention.
Fig. 4 is the schematic diagram for indicating the configuration mode of multiple guide rollers.
Fig. 5 is the schematic diagram of image formation system of the invention.
Fig. 6 is the schematic diagram of the positional relationship between elastomeric element and roll shaft.
Fig. 7 is the enlarged side view at position locating for elastomeric element in Fig. 6.
Description of symbols:
1B ... image forming apparatus；160 ... paper transport mechanisms；166 ... first carrying channels；167 ... second carrying channels；
168 ... third carrying channels；144 ... the 4th carrying channels；A ... interconnecting piece；169 ... switching parts；The first transporting guide rail of 166a ...；
The second transporting guide rail of 166b ...；167a ... third transporting guide rail；The 4th transporting guide rail of 167b ...；The 5th transporting guide rail of 168a ...；
The 6th transporting guide rail of 168b ...；The 7th transporting guide rail of 144a ...；The 8th transporting guide rail of 144b ...；171 ... reception holes；The end 169a ...
Portion；172 ... guide rollers；S ... leads to paper；173 ... roll shafts；174 ... elastomeric elements；169b ... fixing axle；The conveying of 160 ' ... paper
Mechanism；169 ' ... switching parts；The end 169a ' ...；169b ' ... fixing axle；172 ' ... guide rollers；171 ' ... reception holes；
1000 ... image formation systems；1000A ... outside carton；1000B ... image formation mechanism；1000C ... testing agency；
1000D ... paper transport mechanism.
Specific embodiment
Hereinafter, the preferred embodiment of the present invention is described in detail based on attached drawing.In addition, for those skilled in the art
For member, it can be realized their a variety of alternatives under the enlightenment of these embodiments, moreover, the present invention is not limited thereto
Locate the preferred embodiment of explanation.
The structure > of < image forming apparatus
Firstly, being illustrated to the overall structure of image forming apparatus 1B of the invention.Fig. 1 is to indicate image of the invention
Form the integrally-built figure of device 1B.Image forming apparatus 1B is (pinkish red by the Y (yellow) being formed in photosensitive drums 213, M
Color), C (cyan), the assorted toner image primary transfer of K (black) in intermediate transfer belt 221, make four on intermediate transfer belt 221
The toner image of color is overlapped, and later, is secondarily transferred on paper, image is consequently formed.
As shown in Figure 1, image forming apparatus 1B substantially has image reading unit 11, operation display part 12, image processing part
13, image forming part 20, sheet feed section 14, paper discharge unit 15, paper conveying unit 16 and control unit 17.
Control unit 17 have CPU (Central Processing Unit), ROM (Read Only Memory) and
RAM (Random Access Memory) etc. carries out centralized control to the movement of each chunking of image forming apparatus 1B.Control unit
17 communicate through not shown communication unit with LAN (Local Area Network), WAN (Wide Area Network) etc.
Sending and receiving for various data is carried out between the device (such as personal computer) of the outside of network connection.
Image reading unit 11 has the auto document paper feed 111 of referred to as ADF (Auto Document Feeder)
And original image scanning means 112 (scanner) etc..
Auto document paper feed 111 is swept by the original copy that transport mechanism conveying is placed in original copy pallet towards original image
Imaging apparatus 112 is sent out.Original image scanning means 112 is to the original on from the conveying of auto document paper feed 111 to contact glass
Original text or the original copy being positioned on contact glass carry out optical scanner, make the reflected light from original copy in CCD (Charge
Coupled Device) sensor 112a light-receiving surface on be imaged, read original image.Image reading unit 11 is based on original image
The reading result of scanning means 112 generates input image data.The input image data is implemented to provide in image processing part 13
Image procossing.
Operation display part 12 is for example by the liquid crystal display (LCD:Liquid Crystal Display) with operation panel
It constitutes, and is functioned as display unit 121 and operation portion 122.Display unit 121 is according to the display control inputted from control unit 17
Signal processed carries out the display of various operation screens, the status display of image, running-active status of each function etc..Operation portion 122 has
The various operation keys such as number key, start button, receive the various inputs operation of user, and operation signal is exported to control unit 17.
User can operate operation display part 12, carry out original copy setting, image quality setting, multiplying power setting, application settings, output setting, list
The setting that the related image of face/two-sided setting and paper setting etc. is formed.
Image processing part 13, which has, carries out digitized map corresponding with initial setting or user's setting to input image data
As the circuit etc. of processing.For example, image processing part 13 carries out gray scale school under the control of control unit 17, based on gray correction data
Just.In addition, image processing part 13 implements the various correction process such as colour correction, shadow correction to input image data.Based on reality
Image data obtained by these processing is applied, image forming part 20 is controlled.
Image forming part 20 has: for formed according to input image data based on Y ingredient, M component, C ingredient, K at
The toner image forming portion 21 of the toner image of each colored toner divided；The toning that will be formed by toner image forming portion 21
Agent picture is needed on the intermediate transfer portion 22 of paper；And the toner image of transfer is fixed in the fixing device 23 etc. of paper.
Toner image forming portion 21 is used by Y ingredient, M component is used, C ingredient is used, four toner image forming portions of K ingredient
21Y, 21M, 21C, 21K are constituted.Toner image forming portion 21Y, 21M, 21C, 21K structure having the same, therefore for the ease of
Diagram and explanation, shared constituent element are indicated with identical appended drawing reference, in the case where distinguishing each in attached drawing
Label is added Y, M, C, K expression.In Fig. 1, only it is attached to the constituent element of the toner image forming portion 21Y of Y ingredient give it is attached
Icon remembers row into, and the appended drawing reference for omitting the constituent element of other toner image forming portion 21M, 21C, 21K carries out.
Toner image forming portion 21 have exposure device 211, developing apparatus 212, photosensitive drums 213, Charging system 214, with
And drum cleaning device 215 etc..
Photosensitive drums 213 are to stack gradually priming coat in the periphery of the electric conductivity cylinder (aluminum feedstock pipe) of such as aluminum
(UCL:Under Coat Layer), charge generation layer (CGL:Charge Generation Layer), charge transport layer
Organophotoreceptor (the OPC:Organic Photo- of negatively charged type obtained by (CTL:Charge Transport Layer)
conductor)。
Charging system 214 is by such as corona discharges generator structure such as grid-control formula corona charging device, corona tube Charging system
At.Charging system 214 charges the surface of photosensitive drums 213 equally with negative polarity by corona discharge.
Exposure device 211 is by for example multiple light emitting diodes (LED:Light Emitting Diode) linearly to arrange
Made of LED array, the LPH driving portion (driver IC) for driving each LED and with making putting from LED array
The LED print head for penetrating lens array that light is imaged in photosensitive drums 213 etc. is constituted.One of one LED of LED array and image
Point corresponds to.Control unit 17 controls LPH driving portion, and thus defined driving current is flowed in LED array, and specific LED is made to shine.
Exposure device 211 irradiates light corresponding with the assorted image of ingredient to photosensitive drums 213.By light irradiation and feeling
The positive charge that the charge generation layer of light drum 213 generates is transported to the surface of charge conveying layer, thus by the surface of photosensitive drums 213
Charge (negative electrical charge) neutralizes.It is formed with the electrostatic of assorted ingredient due to the potential difference with surrounding on the surface of photosensitive drums 213 as a result,
Sub-image.
Developing apparatus 212 stores the developer of assorted ingredient, and (such as the bi-component being made of toner and magnetic carrier is shown
Shadow agent).Developing apparatus 212 makes the toner of assorted ingredient be attached to the surface of photosensitive drums 213, thus visualizes electrostatic latent image
And form toner image.Specifically, holding body (developer roll) to developer applies developing bias, in photosensitive drums 213 and development
Agent, which is held, forms electric field between body.The potential difference of body is held by photosensitive drums 213 and developer, developer holds the electrification on body
Toner is mobile and is attached to the exposure portion on the surface of photosensitive drums 213.
Drum cleaning device 215 has with the drum cleaning blade of photosensitive drums 213 slidably contacted the surfaces etc., after primary transfer
The transfer residual toner for remaining in the surface of photosensitive drums 213 removes.
Intermediate transfer portion 22 has intermediate transfer belt 221, primary transfer roller 222, two or more multiple bearings
Roller 223, secondary transfer roller 224 and with cleaning device 225 etc..
Intermediate transfer belt 221 is made of endless belt, and is set to multiple backing rolls 223 with skirt.In multiple backing rolls 223
At least one be made of driven roller, other are made of driven voller.By rotating driven roller, intermediate transfer belt 221 is with constant
Speed is advanced along the direction arrow A.
Primary transfer roller 222 is opposed with the assorted photosensitive drums 213 of ingredient, and is configured at the inner peripheral surface of intermediate transfer belt 221
Side.Primary transfer roller 222 is crimped on photosensitive drums 213 in a manner of clipping intermediate transfer belt 221, is consequently formed for from photosensitive
Drum 213 transfers the primary transfer clamping part (hereinafter referred to as " primary transfer portion ") of toner image towards intermediate transfer belt 221.
Secondary transfer roller 224 is opposed with one in multiple backing rolls 223, and is configured at the periphery of intermediate transfer belt 221
Surface side.The backing roll 223 that configuration is opposed to intermediate transfer belt 221 is known as support roller.To clip the side of intermediate transfer belt 221
Secondary transfer roller 224 is crimped on support roller by formula, is consequently formed for transferring toner image from intermediate transfer belt 221 towards paper
Secondary transfer printing clamping part (hereinafter referred to as " secondary transfer section ").
In primary transfer portion, the toner image in photosensitive drums 213 is successively overlapped and primary transfer is in intermediate transfer belt
221.Specifically, to primary transfer roller 222 apply primary transfer bias, intermediate transfer belt 221 lower face side (with it is primary
The side that transfer roll 222 abuts) it is attached give the polar charge opposite with toner, thus toner image static printing is in intermediate turn
Print band 221.
Thereafter, when paper passes through secondary transfer section, the toner image secondary transfer printing on intermediate transfer belt 221 is in paper
On.
Specifically, applying secondary transfer printing bias to secondary transfer roller 224, in the lower face side of paper (with secondary transfer printing
Roller 224 abut side) it is attached give the polar charge opposite with toner, thus toner image static printing is in paper.It will turn
The paper for having printed toner image is transported towards fixing device 23.
With cleaning device 225 with band cleaning blade slidably contacted the surfaces etc. with intermediate transfer belt 221, remove secondary
Remain on the residual toner of transfer on the surface of intermediate transfer belt 221 after transfer.
It should be noted that secondary transfer roller 224 can also be substituted in intermediate transfer portion 22, and use secondary transfer belt
The structure (secondary transfer unit of so-called belt) of multiple backing rolls including secondary transfer roller is set to skirt.
Fixing device 23 has: being configured at the heating roller 231 of fixing face (face for being formed with toner image) side of paper；Match
It is placed in the back side the opposite face of face (fixing) side of paper and the pressure roller opposed with heating roller 231 across paper transport path
232；The heating source 233 that fixing surface side component is heated；And back side bearing part is made to be crimped on fixing surface side component
Crimping separation unit (illustration omitted) etc..Passing through by toner image secondary transfer printing and along the paper that logical paper path is moved
It is heated, pressurizes when fixing device 23.Toner image is fixed on paper as a result,.
There is sheet feed section 14 paper supply tray portion 141 and hand to send sheet feed section 142.In addition, sheet feed section 14 has paper supply roller portion
143 etc., and the paper for sending sheet feed section 142 to supply from paper supply tray portion 141 or hand is sent into paper conveying unit 16.
Paper discharge unit 15 has paper discharge roller portion 151 etc., and the paper sent out from paper conveying unit 16 is discharged to outside machine.
Paper conveying unit 16 has main conveying unit 161, steering conveying unit 162, back side printing conveying unit 163 etc..Paper
A part of conveying unit 16 is for example packed into a unit with fixing device 23 together, and is installed on image in a manner of it can assemble and disassemble
It is formed device 1B (paper transport unit ADU).
For main conveying unit 161 as the paper conveying element for clamping and transporting paper, having includes being configured at secondary transfer section
Paper conveyance direction upstream side multiple conveying roller portions into roller portion 165.Main conveying unit 161 is transported from paper supply tray portion
The paper of 141 supplies or the paper for sending sheet feed section 142 to supply via hand simultaneously make it through 20 (secondary transfer printing of image forming part
Portion, fixing device 23), and will be transported from the paper that image forming part 20 (fixing device 23) is sent out towards paper discharge unit 15.
Turning to conveying unit 162 temporarily ceases the paper sent out from fixing device 23, inverts conveyance direction, and transports extremely
Paper discharge unit 15 or back side printing conveying unit 163.
Back side printing is to transport the paper after turning to by steering conveying unit 162 to main conveying unit 161 with conveying unit 163
Circulating path.In main conveying unit 161, paper is passed through with the state that the second face (back side) becomes upper surface.
< first embodiment >
The paper transport mechanism 160 for connecting different carrying channels and constituting is provided in paper conveying unit 16, such as
Shown in Fig. 2, detection paper image abnormal conditions and by with abnormal image paper and normal paper distinguish and transport
Position is provided with paper transport mechanism 160.It should be noted that it's not limited to that for the setting position of paper transport mechanism 160, only
It is set to and removes paper path crotch with switching part (switching pawl).
The paper transport mechanism 160 for example with a plurality of carrying channel, i.e. the first carrying channel 166, the second carrying channel 167 and
Third carrying channel 168.First carrying channel 166 is set to paper conveyance direction upstream side, is moved to the shape in image forming part 20
The paper of image abnormity situation is checked out at image and through not shown detection unit.
Second carrying channel 167 is located at the paper conveyance direction downstream side of the first carrying channel 166, with 166 phase of the first carrying channel
Even.First carrying channel 166 and the second carrying channel 167 detect paper delivery in detection unit (not shown) substantially along same linear extension
It opens there are when image abnormity, the paper of the exception is transported to storage exception via the first carrying channel 166 and the second carrying channel 167
The abnormal sheet (not shown) of paper stores up paper pallet.
Third carrying channel 168 is similarly positioned in the paper conveyance direction downstream side of the first carrying channel 166, is different from second and removes
Send road 167 and have an independent existence with 167 phase of the second carrying channel, and be connected to the first carrying channel 166 and the second carrying channel 167 it
Between interconnecting piece A (interconnecting piece A is the mutual interconnecting piece of each carrying channel).First carrying channel 166 and third carrying channel 168 can be with
It connects, can also be directly connected at other angles, as long as being formed with regulation via the 4th carrying channel 144 of arc-shaped (bending)
Angle, here, lift via the 4th carrying channel 144 of arc-shaped (bending) and connection mode be illustrated.Do not scheming
The detection unit shown detects paper there is no when image abnormity, which removes via the first carrying channel 166 and third
The normal paper storage paper pallet (not shown) for sending road 168 to be transported to the normal paper of storage.
First carrying channel 166 has across logical paper S and the conveying of the first mutually opposed transporting guide rail 166a and second is led
Rail 166b, the second carrying channel 167 have across logical paper S and mutually opposed third transporting guide rail 167a and the 4th transporting guide rail
167b, third carrying channel 168 have across logical paper S and the 5th mutually opposed transporting guide rail 168a and the 6th transporting guide rail
168b, the 4th carrying channel 144 have across logical paper S and the 7th transporting guide rail 144a of mutually opposed arc-shaped and the 8th is removed
Send guide rail 144b.
Second transporting guide rail 166b is connected with the 4th transporting guide rail 167b, and the two is substantially along same linear extension.First removes
Guide rail 166a is sent to be connected via the 7th transporting guide rail 144a of arc-shaped with the 5th transporting guide rail 168a, the 6th transporting guide rail
168b with third transporting guide rail 167a is connected via the 8th transporting guide rail 144b of arc-shaped and with the angle of acute angle.
In interconnecting piece A, specifically, the connecting portion between the 8th transporting guide rail 144b and third transporting guide rail 167a
On, the conveyance direction for being provided with the paper for will move from the first carrying channel 166 is transported in the second carrying channel 167 with third
The switching part 169 switched between road 168.Switching part 169 is, for example, to switch pawl, movable in the range of interconnecting piece A,
Its fixing end can be fixed on fixing axle 169b with the relative rotation, and end 169a can be opposite centered on fixing axle 169b
Rotation, thus by the conveyance direction of the paper moved from the first carrying channel 166 in the second carrying channel 167 and third carrying channel
It is switched between 168.
In interconnecting piece A, specifically, in the circular arc between the first transporting guide rail 166a and the 5th transporting guide rail 168a
It is provided in the orbital plane of 7th transporting guide rail 144a of shape towards the reception hole 171 with logical paper S opposite side recess, the receipts
Hole 171 is received for storing the end 169a of switching part 169.It should be noted that reception hole 171 be not limited to guide pass recess and
It is formed, guide pass can also be run through and be formed, as long as the end 169a of switching part 169 can be stored.In combination with
Fig. 6 is it is found that being for example provided in reception hole 171 can consolidate along with the free-moving conduct of logical paper S generally perpendicular direction
The roll shaft 173 of dead axle is provided with the guide roller 172 for guiding paper on roll shaft 173.Guide roller 172 can be set one,
Also can be set it is multiple, as long as changing its quantity according to specific needs and suitably.
Paper is detected there is no when image abnormity in detection unit (not shown), and the end 169a of switching part 169 is not
It is accommodated in reception hole 171 and is located remotely from the position (position shown in dotted lines in Figure 2) of 171 side of reception hole, at this point, guide roller
172 is prominent from reception hole 171, specifically prominent from reception hole 171 relative to the 7th transporting guide rail 144a, thus moved
Normal paper is successively transported to along the 4th carrying channel 144 and third carrying channel 168 not shown by the guidance of guide roller 172
Post-processing unit or normal paper store up paper pallet.
Paper is detected there are when image abnormity in detection unit (not shown), and the end 169a of switching part 169 is to receipts
Receiving hole 171 enters and keeps 172 Xiang Yutong paper S opposite side of guide roller mobile, and guide roller 172 is finally made to be located at switching part
169 paper conveyance direction downstream side (position shown in solid in Fig. 2), so that the abnormal sheet moved passes through switching part
The guidance of part 169 and be transported to abnormal sheet (not shown) storage paper pallet along the second carrying channel 167.
It should be noted that guide roller 172 is movable, the position of guide roller 172 is accommodated in the end 169a of switching part 169
Receive hole 171 when compared with when the end 169a of switching part 169 is not accommodated in reception hole 171 be located at and logical paper S opposite side.
Switching part 169 can link through not shown mechanical linkage mechanism and roll shaft 173, thus band action-oriented
172 Xiang Yutong paper S opposite side of roller is mobile, alternatively, can also make roll shaft by electromagnetic excitation under the control of control unit 17
173 link with the rotation of switching part 169, thus drive 172 Xiang Yutong paper S opposite side of guide roller mobile, alternatively, can also
So that switching part 169 directly presses guide roller 172 and keeps 172 Xiang Yutong paper S opposite side of guide roller mobile.
Make 172 Xiang Yutong paper S opposite side of guide roller using the directly pressing guide roller 172 of switching part 169 is made
In the case where mobile mode, although switching part 169 can also directly press can be contacted with the paper moved be located at
Paper transports the guide roller 172 in range, but considers from the durability of component, is located in paper conveying range in order to prevent
Abrasion etc. occurs for guide roller 172, can also be provided with the premise of multiple guide rollers 172 on roll shaft 173 as shown in Figure 4
Under, so that the guide roller 172 (guide roller 172b) of a part is located at outside paper conveying range (the maximum sized paper transported
Outside width range), and be greater than the outer diameter for the guide roller 172 (guide roller 172b) being located at outside paper conveying range and removed positioned at paper
Send the outer diameter of the guide roller 172 (guide roller 172a) in range.Enter reception hole 171 in the end 169a of switching part 169
In the process, the pressing of switching part 169 is located at the guide roller 172 (guide roller 172b) outside paper conveying range and makes to be set to roll shaft
172 Xiang Yutong paper opposite side of multiple guide rollers on 173 is mobile.
In addition, in reception hole 171 and guide roller 172 is provided with always to guide roller 172 with logical paper S opposite side
The elastomeric element 174 pushed towards the logical side paper S, the elastomeric element can be the spring members such as helical spring, leaf spring,
Fig. 6 and structure shown in Fig. 7 can have been selected in the present embodiment for flexible other component, elastic mechanism etc.
Elastomeric element.
Detect that paper there is no when image abnormity, passes through pushing away for elastomeric element 174 again in detection unit (not shown)
Press and keep guide roller 172 mobile towards the side logical paper S, make the end 169a of switching part 169 from reception hole 171 exit and again
The position (position shown in dotted lines in Figure 2) far from 171 side of reception hole is returned to, at this point, guide roller 172 is again relative to the 7th
Transporting guide rail 144a is prominent from reception hole 171, so that the normal paper moved passes through the guidance of guide roller 172 successively edge
4th carrying channel 144 and third carrying channel 168 are transported to normal paper storage paper pallet (not shown).
Above structure according to the present invention, due to when the end 169a of switching part 169 is not accommodated in reception hole 171,
Guide roller 172 is prominent from above-mentioned reception hole 171 relative to the 7th transporting guide rail 144a, so the paper moved will not be with circle
7th transporting guide rail 144a of arcuation is contacted, and the guide pass that can be avoided paper and arc-shaped generates friction, and then can prevent
There is paper scratch, transport the problems such as bad even paper jam.
In addition, guide roller 172 is located at switching part due to when the end 169a of switching part 169 is accommodated in reception hole 171
The paper conveyance direction downstream side of part 169, so the paper moved is directly contacted with switching part 169, thus, it is possible to logical
It crosses the guidance of switching part 169 and swimmingly transports paper.
In addition, guide roller 172 is movable, the position of guide roller 172 is accommodated in reception hole in the end 169a of switching part 169
When 171 compared with when the end 169a of switching part 169 is not accommodated in reception hole 171 be located at logical paper S opposite side, change sentence
It talks about, by during the end 169a of switching part 169 enters reception hole 171, making 172 Xiang Yutong paper S of guide roller
Opposite side is mobile, after entering movement, guide roller 172 can be made to be located at the paper of switching part 169 in switching part 169
Conveyance direction downstream side is opened, so that the paper moved is directly contacted with switching part 169, thus, it is possible to pass through switching part
169 guidance and swimmingly transport paper.
Furthermore it is possible to drive 172 Xiang Yutong paper S of guide roller opposite with the linkage of switching part 169 by roll shaft 173
Side is mobile, and so as to avoid the pressing force of switching part 169 from directly acting on guide roller 172, thus, it is possible to prevent from being oriented to
Abrasion etc. occurs for roller 172, and then prevents situations such as paper abrades.
Make 172 Xiang Yutong paper S opposite one of guide roller alternatively, it is also possible to press guide roller 172 by switching part 169
Side is mobile, thus, it is possible to simplify structure, avoids asking for due to using other linkage mechanisms or control device bring increased costs
Topic.
Make to be set to roller alternatively, it is also possible to the guide roller 172 for being located at the pressing of switching part 169 outside paper conveying range
Xiang Yutong paper opposite side is mobile simultaneously for multiple guide rollers 172 on axis 173, so as to avoid switching part 169 direct
The guide roller 172 being located in paper conveying range that can be contacted with the paper moved is pressed, thus, it is possible to prevent from being located at paper
Abrasion etc. occurs for the guide roller 172 opened in conveying range, and then prevents situations such as paper abrades.
In addition, keeping guide roller 172 mobile towards the side logical paper S by the pushing of elastomeric element 174, it is thus possible to rely on
Simple and cheap structure swimmingly realizes the ejection operation of guide roller 172.
In addition, needing to realize said effect between roll shaft 173, elastomeric element 174 and switching part 169
Stress relation be configured.Specifically, referring concurrently to Fig. 2 and Fig. 6, if the guide roller 172 when paper passes through on roll shaft 173
Pressing force (maximum counter-force) be greater than elastomeric element 174 itself elastic force (pressing force of 174 roll shaft 173 of elastomeric element),
Can then generate roll shaft 173 because paper by when maximum counter-force enter the problems in reception hole 171, similarly, if switching part
If the turning power of part 169 is less than the pressing force of 174 roll shaft 173 of elastomeric element, roll shaft 173, which will be present, cannot be introduced into reception hole
The problems in 171.It is therefore preferable that meeting the pressing force < of maximum 174 roll shaft 173 of counter-force < elastomeric element when paper passes through
The turning power of switching part 169, thus, it is possible to avoid the occurrence of the above problem.
In addition, if the slidable range of switching part 169 is greater than the range that roll shaft 173 can be kept out of the way, it would be possible to
So that roll shaft 173 is excessively kept out of the way and is collided the other component in mechanism because of the excessive movement of switching part 169, causes to damage.Cause
This, preferably satisfies the range that the slidable range L T.LT.LT roll shaft 173 of switching part 169 can be kept out of the way, to avoid the above problem.
In addition, in the above-described embodiment, lifting switching part is switching pawl, end can centered on fixing axle phase
The mode of rotation is illustrated, but switching part is not limited to the mode of the fixed one end rotation (waving) in one end, it can also
In a manner of being formed as sliding, for the mode of sliding, two ends of switching part can be slided simultaneously with phase
Reception hole is entered or exited.
< second embodiment >
As shown in figure 3, in this second embodiment, the appended drawing reference with first embodiment structure same section is omitted,
And omit repeated explanation.
In 160 ' of paper transport mechanism of second embodiment of the present invention, 169 ' of switching part is equally, for example, to switch
Pawl, fixing end can be fixed on fixing axle 169b ' with the relative rotation, and end 169a ' can be centered on fixing axle 169b '
And relative rotation, thus by the conveyance direction of the paper moved from the first carrying channel the second carrying channel and third carrying channel it
Between switch over.169 ' of switching part of 160 ' of paper transport mechanism of second embodiment compared with first embodiment,
Length is shorter and can non-contiguously switch carrying channel relative to 172 ' of guide roller.
Specifically, no matter the end 169a ' of 169 ' of switching part is accommodated in front of or after 171 ' of reception hole, guide roller
The position of 172 ' will not all change.When the end 169a ' of 169 ' of switching part is accommodated in 171 ' of reception hole, guide roller
172 ' are located at the paper conveyance direction upstream side of 169 ' of switching part, so, can assist drawing by 172 ' of guide roller
Lead paper (abnormal sheet moved), specifically, either to the second carrying channel transport paper when, or to third transport
It when road transports paper, can be guided using guide roller, thus, it is possible to play excellent guidance effect, thus in fact with first
The mode of applying is compared, and is had and is more preferably guided effect.
In addition, during the end 169a ' of 169 ' of switching part enters or exits 171 ' of reception hole, switching part
169 ' are not contacted with 172 ' of guide roller, so no matter whether the end 169a ' of 169 ' of switching part is accommodated in 171 ' of reception hole
In, 172 ' of guide roller is prominent from above-mentioned reception hole always and can play the effect of guidance, moreover, 169 ' of switching part not with lead
It is contacted to 172 ' of roller, additionally it is possible to situations such as preventing 172 ' of guide roller from abrasion etc. occurs, and then prevent paper scratch.
It should be noted that paper transport mechanism 160 of the invention, 160 ' are not limited to that image shape shown in Fig. 1 is arranged
At in device 1B, also can be set in image formation system 1000 shown in Fig. 5.
Specifically.Fig. 5 is the schematic diagram of image formation system 1000 of the invention.Image formation system 1000 substantially has
It is standby: multiple outside carton 1000A for storing paper；It is adjacently set under conveyance direction with multiple outside carton 1000A
Side is swum, and forms the image formation mechanism 1000B of image on paper by primary transfer and secondary transfer printing；Machine is formed with image
Structure 1000B is adjacently set to conveyance direction downstream side, for detecting the paper image exception for passing through image formation mechanism 1000B
The testing agency 1000C of situation；It is adjacently set to conveyance direction downstream side with testing agency 1000C, and according to testing agency
Paper with abnormal image is distinguished the paper transport mechanism 1000D transported with normal paper by the testing result of 1000C；
And it is provided adjacent to paper transport mechanism 1000D, the rear place (not shown) for being post-processed to the paper moved
Mechanism is managed, in addition to this, is also equipped with normal paper storage paper pallet and abnormal sheet storage paper pallet etc. certainly.
In image formation system 1000, switching part possessed by paper transport mechanism 1000D is according to testing agency
The testing result of 1000C by the conveyance direction of the paper moved from the first carrying channel the second carrying channel and third carrying channel it
Between switch over, thus, it is possible to bring technical effect identical with above description.
It should be noted that can according to need the present invention is not limited to the respective embodiments described above by above-mentioned each embodiment
It is freely combined, is made various changes in the range of comprising technical idea of the invention.
Claims (10)
1. a kind of paper transport mechanism, comprising:
First carrying channel；
Second carrying channel, be located at above-mentioned first carrying channel paper conveyance direction downstream side, and with above-mentioned first carrying channel phase
Even；
Third carrying channel is located at the paper conveyance direction downstream side of above-mentioned first carrying channel, is different from above-mentioned second carrying channel,
And defined angle is formed with above-mentioned first carrying channel；And
Switching part, it is movable in the range of above-mentioned each carrying channel mutual interconnecting piece, for will be from above-mentioned first carrying channel
The conveyance direction of the paper moved switches between above-mentioned second carrying channel and above-mentioned third carrying channel；
Above-mentioned paper transport mechanism is characterized in that,
Above-mentioned interconnecting piece is provided with reception hole, above-mentioned reception hole is used to store the end of switching part,
The guide roller for guiding paper is provided in above-mentioned reception hole,
When the end of above-mentioned switching part is not accommodated in above-mentioned reception hole, above-mentioned guide roller is prominent from above-mentioned reception hole.
2. paper transport mechanism according to claim 1, which is characterized in that
When the end of above-mentioned switching part is accommodated in above-mentioned reception hole, the paper that above-mentioned guide roller is located at above-mentioned switching part is removed
Send direction downstream side.
3. paper transport mechanism according to claim 1 or 2, which is characterized in that
Above-mentioned guide roller is movable,
The position of above-mentioned guide roller when the end of above-mentioned switching part is accommodated in above-mentioned reception hole with the end of above-mentioned switching part
Compared to being located at and logical paper opposite side when portion is not accommodated in above-mentioned reception hole.
4. paper transport mechanism described in any one of claim 1 to 3, which is characterized in that
Above-mentioned guide roller is set to roll shaft,
During the end of above-mentioned switching part enters above-mentioned reception hole, above-mentioned roll shaft and above-mentioned switching part link, by
This drives above-mentioned guide roller Xiang Yutong paper opposite side mobile.
5. paper transport mechanism described in any one of claim 1 to 3, which is characterized in that
Above-mentioned guide roller is set to roll shaft,
During the end of above-mentioned switching part enters above-mentioned reception hole, above-mentioned switching part presses above-mentioned guide roller and makes
Above-mentioned guide roller Xiang Yutong paper opposite side is mobile.
6. paper transport mechanism according to claim 5, which is characterized in that
Multiple above-mentioned guide rollers are provided on above-mentioned roll shaft, the outer diameter of the guide roller outside paper conveying range, which is greater than, to be located at
Paper transports the outer diameter of the guide roller in range,
During the end of above-mentioned switching part enters above-mentioned reception hole, above-mentioned switching part pressing is located at paper and transports model
It encloses outer guide roller and makes to be set to multiple above-mentioned guide roller Xiang Yutong paper opposite side movements on above-mentioned roll shaft.
7. paper transport mechanism described according to claim 1~any one of 6, which is characterized in that
In above-mentioned reception hole and being provided with logical paper opposite side for above-mentioned guide roller always leads to above-mentioned guide roller direction
The elastomeric element that paper side is pushed,
During above-mentioned reception hole is exited in the end of above-mentioned switching part, made by the pushing of above-mentioned elastomeric element above-mentioned
Guide roller is mobile towards paper side is led to.
8. paper transport mechanism according to claim 1, which is characterized in that
Enter in the end of above-mentioned switching part or during exit above-mentioned reception hole, above-mentioned switching part not with above-mentioned guiding
Roller contact.
9. a kind of image forming apparatus has paper transport mechanism according to any one of claims 1 to 8.
10. a kind of image formation system, which is characterized in that have:
The image formation mechanism of image is formed on paper；
For detecting the testing agency of the paper image abnormal conditions by above-mentioned image formation mechanism；And
Paper transport mechanism according to any one of claims 1 to 8,
In above-mentioned paper transport mechanism, switching part will be transported according to the testing result of above-mentioned testing agency from the first carrying channel
The conveyance direction of the paper come switches between the second carrying channel and third carrying channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711479070.XA CN109995961A (en) | 2017-12-29 | 2017-12-29 | Paper transport mechanism, image forming apparatus and image formation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711479070.XA CN109995961A (en) | 2017-12-29 | 2017-12-29 | Paper transport mechanism, image forming apparatus and image formation system |
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| JP2021113105A (en) * | 2020-01-17 | 2021-08-05 | 株式会社リコー | Sheet conveyance device and image formation apparatus |
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