CN100520639C - Cleaning device - Google Patents
Cleaning device Download PDFInfo
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- CN100520639C CN100520639C CNB2004800288884A CN200480028888A CN100520639C CN 100520639 C CN100520639 C CN 100520639C CN B2004800288884 A CNB2004800288884 A CN B2004800288884A CN 200480028888 A CN200480028888 A CN 200480028888A CN 100520639 C CN100520639 C CN 100520639C
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- Cleaning In Electrography (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Paper Feeding For Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Cleaning device comprising a cleaning unit (35) placed on the downstream side of a position for transferring a toner image onto a sheet. The cleaning unit (35) comprises a cleaning blade (35c) for scraping off residual toner adhering on an image carrier, and a toner dropping prevention sheet (35e) for preventing the scraped residual toner and paper powder from dropping to outside the cleaning unit. In the toner dropping preventive sheet (35), the free length between a fixed position at a first end part secured to the cleaning unit (35) and a second end part in contact with the outer peripheral part of the image carrier is determined depending on the quantity of paper powder collected on the outer peripheral part of the image carrier.
Description
Technical field
The present invention relates to a kind of cleaning device, be applied in and carry toner on the peripheral part hold body and look like to carry out transfer printing and on paper, form in the image processing system of image, remove attached to picture and carry remaining toner and paper powder on the peripheral part of holding body being formed at picture.
Background technology
In the past, paper is transported to (comprising recording mediums such as OHP) when in image processing system, forming image the mode of image forming part, has from the paper feeding cassette that is configured in apparatus main body inside to the 1st paper supply way of image forming part paper supply with from the manual feed trays that is configured in the apparatus main body outside the 2nd paper supply way to the image forming part paper supply.
Be accommodated in the paper on above-mentioned paper feeding cassette and the manual feed trays, 1 optionally is transported to image forming part and forms image through paper transport path behind the paper supply when image forms.At this, when 1 providing paper, paper is opened ground by 1 of separating component and is handled.Therefore, because the friction of paper and separating component etc., the talc materials as the paper powder (bleaching agent, extender or the like of containing in the paper.Principal ingredient is similar to SiO
2) the disengaging paper.This paper powder because friction of conveying roller etc. etc. and charged, thereby adheres to and is deposited on the peripheral part of the photoreceptor (holding body as carrying) that is provided with on each conveying roller that is disposed at paper transport path or the image forming part, causes image quality low.
For example shown in Figure 6, after being formed on toner on the peripheral part of photoreceptor 31 and looking like to be transferred to paper, be removed by cleaning unit 35 attached to the remaining toner of paper powder P on the peripheral part that remains in photoreceptor 31 on the peripheral part of photoreceptor 31.Cleaning unit 35, being configured in the position that looks like to be transferred on the paper than the toner that forms on the peripheral part with photoreceptor 31 more carries on the peripheral part of holding body 31 by the picture in the downstream of the rotation direction of the photoreceptor 31 shown in the arrow Y of Fig. 6, on the unit main body that forms peristome 35a, be provided with cleaner plate 35c and rigidity and be set at front end and can not leave the toner that picture carries the higher value of the degree of holding body 31 and fall prevent sheet 35e owing to vibration.
Peristome 35a is recovered to cleaning unit 35 inside with remaining toner of wiping off etc.Cleaner plate 35c, the peripheral part of part contact photoreceptor 31 is wiped off attached to remaining toner on the peripheral part of photoreceptor 31 and paper powder P.Toner falls to preventing that sheet 35e from preventing that the remaining toner wiped off etc. from not reclaiming from peristome 35a but drop to the paper transport path etc.
At this moment, the toner of good fluidity, peel off and reclaim from the parts such as cleaner plate 35c that the peripheral part with photoreceptor 31 contacts, be difficult to peel off, be deposited on the parts such as cleaner plate 35c that contact with the peripheral part of photoreceptor 31 but paper powder P flowability is poor from peristome 35a.
Again, paper powder P, the parts from its accumulation when being stacked into ormal weight are peeled off, and a part reclaims from peristome 35a, but major part is once more attached on the peripheral part of photoreceptor 31 and sneak into the developing trough that disposes on the peripheral part of photoreceptor 31 etc.When paper powder P sneaks into developing trough, because toner and paper powder (SiO
2) the charged characteristic difference, hinder the charged normally of toner, increase the not generation of charged toner, cause image quality to descend and image blurring.Particularly as shown in Figure 6, the paper powder P that peels off from cleaner plate 35c, be deposited in toner owing to fall easily and fall to preventing on the sheet 35e, so, make the recovery ability drop of remaining toner and paper powder P because the paper powder P that piles up narrows down the aperture area of peristome 35a.Again, toner falls to preventing sheet 35e, owing to be positioned at the upstream side that more leans on the rotation direction of photoreceptor 31 than cleaner plate 35c, so paper powder P easily is deposited in contact portion and periphery thereof with the peripheral part of photoreceptor 31, thus, the paper powder P that piles up peels off and on the paper of toner picture that dropped to paper transport path or transfer printing, image quality is descended.
Therefore, in image processing system in recent years, sometimes adopt following method: make the peripheral part and the separating component surface of clearer butt feed rolls, utilize the difference of kinetic friction coefficient to remove attached to (for example with reference to patent documentations 1) such as the peripheral part of feed rolls and the lip-deep paper powder of separating component with kinetic friction coefficient bigger than the kinetic friction coefficient on the separating component surface of feed rolls and butt feed rolls.Again, in the formation of above-mentioned patent documentation 1, the cleaner plate that is connected to attached to paper powder on the peripheral part of clearer etc. on the peripheral part of clearer is removed.
Again, sometimes adopt following method: on the cleaning device that the remaining toner on the peripheral part that is disposed at photoreceptor is reclaimed, setting is caught brush and is contacted the peripheral part of photoreceptor, by the above-mentioned brush of catching is applied voltage and removes attached to the paper powder on the peripheral part of photoreceptor (for example with reference to patent documentation 2).
Patent documentation 1: the spy opens flat 11-106073 communique;
Patent documentation 2: the spy opens the 2000-81819 communique.
But, in the formation of above-mentioned patent documentation 1, though under the uncharged state of paper powder the configuration cleaning section, it is not thorough that it removes effect yet, removing of paper powder is insufficient.Because clearer must newly be set, cause cost to raise or the apparatus main body maximization again.
Again, in the formation of above-mentioned patent documentation 2, brush is caught in utilization can catch paper powder attached to the electriferous state on the peripheral part of photoreceptor, but owing to the brush of catching that contacts with the peripheral part of photoreceptor is applied the deterioration that voltage causes photoreceptor (because paper powder remove usefulness apply the saturated zone electric potential of voltage near photoreceptor), and be unfavorable for that the image of the paper carried later forms.
Summary of the invention
The object of the present invention is to provide a kind of cleaning device, remove remaining toner and do not damage the peripheral part of photoreceptor, also can effectively remove attached to the paper powder on the peripheral part of photoreceptor.
Cleaning device of the present invention has: cleaning unit, and have with picture and carry the peripheral part opening opposing portion hold body, be configured in than being formed at this picture and carry the position that the toner of holding on the body looks like to be transferred on the paper and more lean on the downstream; Cleaner plate is arranged in the aforementioned cleaning unit, and the above-mentioned picture of leading section butt carries the peripheral part of holding body and wipes off attached to this picture and carry the remaining toner hold on the body; Toner falls and to prevent sheet, is arranged in the aforementioned cleaning unit and longitudinally and said image are carried the sheet material of the axially parallel of holding body, and the aforementioned peristome that is positioned at than aforementioned cleaning unit main body more leans on above-mentioned picture to carry the upstream side of the rotation direction of holding body;
Aforementioned toner falls to preventing sheet, the 1st end of the direction vertical with above-mentioned longitudinally is fixed on the aforementioned cleaning unit, 2nd end relative with aforementioned the 1st end is connected to said image and carries on the peripheral part of holding body, from the fixed position of aforementioned the 1st end, be connected to the drift that said image is carried the position of the peripheral part of holding body to aforementioned the 2nd end, what of paper powder hold-up of carrying the peripheral part of holding body according to said image on aforementioned longitudinally are determined.
In this constituted, the toner that cleaning unit has fell to preventing the drift of sheet, longitudinally (as carry hold body axially) go up according to attached to falling to preventing that with toner the relative picture of sheet carries paper powder hold-up on the peripheral part of holding body what are determined.Promptly, fall to preventing on the longitudinally of sheet at toner, carry the drift of the many local relative parts of the paper powder hold-up of the peripheral part hold body with picture, what be different from that toner falls to preventing sheet year holds the drift of the few local relative part of the paper powder hold-up of peripheral part of body with picture.
On the other hand, the paper powder, the paper that will take in from paper feeding cassette etc. be transported to transfer printing toner picture the position, separate from paper when utilizing separating component etc. that 1 on paper is opened ground and handled.Therefore, paper with the paper powder attached to part that separating component contacts on state carry.Again, the paper powder, in paper sheet delivery way because charged, so hold on the peripheral part of body in that toner is carried attached to picture when picture carries on the peripheral part of holding body as transfer printing with the friction of conveying roller etc.Therefore, carry the amount of the paper powder on the peripheral part hold body attached to picture, picture carry hold body axially on, promptly different on the longitudinally of cleaning unit.
Again, the paper powder is mobile poor, falls to preventing on the sheet so the paper powder that the plate that is cleaned is wiped off is deposited in toner easily.And toner falls to preventing sheet because the contact picture carries the peripheral part of holding body, so toner fall to preventing sheet carry also bulk paper powder easily of the contact portion of the peripheral part of holding body and periphery thereof with picture.Therefore, on above-mentioned longitudinally, be deposited in what of amount that toner falls to preventing the paper powder on the sheet, what of paper powder hold-up of carrying the peripheral part of holding body with relative picture are corresponding.
At this, toner falls to preventing sheet, vibrates along with the vibration of the driving of the inner conveying screw rod that is provided with of cleaning unit etc.And above-mentioned drift is long more, and the amplitude of its vibration is also big more.Therefore, fall to preventing on the sheet that the partial vibration long in above-mentioned drift increases, the easier paper powder that is trapped in as carrying on the peripheral part of holding body of removing at toner.
Therefore, by be arranged to carry the paper powder hold-up of the aforementioned peripheral part of holding body 1st drift corresponding than many places with said image, than to carry the 2nd corresponding drift of the less place of paper powder hold-up of the aforementioned peripheral part of holding body long with said image, thereby can peel off the paper powder of the local relative part more than that toner falls to preventing sheet and the above-mentioned paper powder hold-up easily.Therefore, the paper powder, be deposited in toner and fall to preventing on the sheet and can not become the bulk of paper powder, peel off and carry the air-flow that rotation produced of holding body, fall to preventing that from being positioned at sheet more carries the peristome inflow cleaning unit in the rotation direction downstream of holding body by picture than toner by picture.
In another embodiment of the present invention, except that aforementioned toner falls to preventing the sheet, also has the paper separation claw, be arranged on the upstream side of aforementioned cleaning unit main body, carry with said image and to hold the body clutch freely, carry when holding body from this picture and year hold the body aforementioned paper of aforementioned toner picture of having peeled off transfer printing being connected to this picture.
Aforementioned paper separation claw contacts aforementioned toner whereabouts and prevents sheet and make this toner fall to preventing the sheet vibration when carrying out clutch action.
Aforementioned paper separation claw and said image are carried when holding the body clutch, contact aforementioned toner simultaneously and fall to preventing sheet, and aforementioned paper pruinescence is peeled off thereby this toner falls to preventing the sheet vibration.
Toner is fallen prevent sheet with picture carry the many local relative parts of paper powder hold-up on the peripheral part of holding body amplitude, fall to preventing sheet greater than toner year hold the amplitude of the few local relative part of paper powder hold-up on the peripheral part of body with picture.Can effectively peel off picture like this and carry the paper powder of holding on the body.
Can utilize the action of carrying the paper separation claw of the outer peripheral face release papers hold body to make toner fall to preventing the sheet vibration from picture again.Therefore, needn't be provided for making the mechanism of the special use of its vibration in addition with the paper separation claw, but the miniaturization of implement device and low cost.
Description of drawings
Fig. 1 is the cut-open view of brief configuration of the image processing system of the expression cleaning device that comprises embodiments of the present invention.
Fig. 2 is a local amplification view of using the image forming part that image processing system possessed of above-mentioned cleaning device.
Fig. 3 is a local amplification view of using the image forming part that image processing system possessed of above-mentioned cleaning device.
Fig. 4 is sectional view and the vertical view that presentation video forms the outward appearance of the paper separating component in the sheet feed section of device.
Fig. 5 is the local amplification view of image processing system that expression comprises the cleaning device of embodiments of the present invention.
Fig. 6 comprises to have the local amplification view of image processing system that the bigger toner of rigidity falls to preventing the cleaning device of sheet.
Fig. 7 is the local amplification view of the image forming part that image processing system possessed of using the cleaning device of another embodiment of the present invention.
Fig. 8 is the sectional view and the vertical view of the outward appearance of the paper separating component in the sheet feed section of indication device.
Fig. 9 holds external all sketches as carrying.
Figure 10 is a local amplification view of using the image forming part that image processing system possessed of this cleaning device.
Embodiment
Fig. 1 is the cut-open view of brief configuration of the image processing system of the expression cleaning device of having used embodiments of the present invention.
As the image processing system 100 of agent set of the present invention, form pattern as the image that transfers images on the paper (comprising recording mediums such as OHP), copy mode, printing model, fax pattern are arranged, each pattern is selected by the user, but and two sides lettering.
Again, image processing system 100 comprises manuscript reading section 10, sheet feed section 20, image forming part 30, row's paper portion 40, not shown operating surface board and control part etc.Manuscript reading section 10 is configured in the top of apparatus main body, is made of platen glass 11, original copy loading tray 12 and scanning optics 13 etc.Scanning optics 13 has light source 14, catoptron 15a～15c, optical lens 16 and CCD (Charge Couped Device) 17.Light source 14 is on the original copy that rayed is carried at the original copy of mounting on the platen glass 11 or from original copy loading tray 12 along original copy transfer passage R.A plurality of catoptron 15a～15c, reflection is from the reflected light of original copy and the optical lens 16 that leads.Optical lens 16 makes the reflected light optically focused and the CCD17 that leads by catoptron 15a～15c guiding.The reflected light of CCD17 after to optically focused carries out opto-electronic conversion.
Sheet feed section 20 is configured in the bottom of apparatus main body, comprises paper supply tray 21, manual feed trays 22 and paper feed roller 23, separating component 24 etc.Paper supply tray 21 and manual feed trays 22, mounting image offer the paper of paper transport path S when forming.Paper feed roller 23 rotates and carries the paper of taking on paper supply trays 21 grades to separating component 24.Separating component 24 comprises feed rolls 24a and plate member 24b etc., when carrying on many ground of the hanging togother that is transported by paper feed roller 23, its 1 is transported among the paper transport path S with opening.Feed rolls 24a, the surface of the plate member 24b that the butt friction factor is littler than peripheral part when paper feed roller 23 overlapping many ground transport paper, is only opened a piece of paper of feed rolls 24a side and is transported to paper transport path S.For example when paper feed roller 23 transports two paper, the paper of contact plate parts 24b side, utilize with the friction of plate member 24b and rest on the surface of plate member 24b, the paper that the peripheral part side of contact feed rolls 24a is only arranged utilizes with the rotation of the friction of feed rolls 24a and feed rolls 24a and is transported to paper transport path S.
Image forming part 30, be configured in manual feed trays 22 sides of the below of manuscript reading section 10, laser scanner (below be called LSU) 37, have as picture of the present invention and carry photoreceptor 31 and the fixing device 36 of holding body, around photoreceptor 31, charged device 32, developing apparatus 33, transfer device 34 and cleaning unit 35 constitute along the arrow Y direction of the rotation direction of photoreceptor 31 and dispose successively.
Arrange paper portion 40, be configured in the top of paper supply tray 21, constitute by exit roller 41 and discharge tray 42 etc.Exit roller 41 is discharged to the paper that transports on the paper transport path S on the discharge tray 42.Exit roller 41 can reverse, when the two sides of paper forms image, block that transport on the paper transport path S, positive finished the paper that image forms after, to rotating, and be transported on the paper transport path S ' with the direction of the direction of rotation of discharging above-mentioned paper.Thereby make the pros and cons counter-rotating of paper and the back side is relative with photoreceptor 31, carry out the transfer printing of toner picture on overleaf.Discharge tray 42 is taken in the image of discharging from exit roller 41 and is formed paper after finishing.In addition, the separating component 24 of embodiments of the present invention relatively disposes with the middle body of the direction vertical with the paper transport path direction on the paper of carrying.Again, control part is controlled the action of the integral body of above-mentioned image processing system 100.
When under copy mode, duplicating the image of original copy on paper, after the original copy that will duplicate is placed on the platen glass 11 of manuscript reading section 10 or the original copy loading tray 12, push each enter key of being located at the operating surface board, duplicate the setting input of number, magnification etc., press not shown initiating key and begin to duplicate action.
When initiating key was pressed, the paper feed roller 23 of image processing system 100 rotated and makes paper be provided for paper transport path S.The paper of paper supply is transported on the resistance roller 51 of being located at paper transport path S.
The leading section of the throughput direction of the paper of on resistance roller 51, carrying, in order to look like to carry out contraposition with the toner of wanting transfer printing on the peripheral part of the photoreceptor 31 of paper, to form, be stuck on the resistance roller 51 with the axially parallel of resistance roller 51.
View data by manuscript reading section 10 reads after carrying out Flame Image Process under the condition of using inputs such as enter key, sends to LSU37 as print data.LSU37 is utilizing charged device 32 to have the peripheral part of the photoreceptor 31 of regulation current potential, forms electrostatic latent image by not shown polygon mirror and various lens lighting based on the laser of above-mentioned view data.Afterwards, corresponding with the current potential gap of the peripheral part of photoreceptor 31 and be attracted on the peripheral part attached to photoreceptor 31 attached to the toner of being located at the MG roller 33a surface on the developing apparatus 33, electrostatic latent image is developed.
Afterwards, utilize resistance roller 51, make the position consistency of the toner picture that the peripheral part of the paper that blocked by resistance roller 51 and photoreceptor 31 forms, with paper sheet delivery between photoreceptor 31 and the transfer device 34.Utilize on the transfer device 34 the not shown transfer roll that is provided with then, with the toner of the peripheral part of photoreceptor 31 as transfer printing on above-mentioned paper.Be through with paper after the transfer printing of toner picture is subjected to heat and pressure effect and makes toner as the fusion set during by fixing device 36, utilize exit roller 41 to be discharged on the discharge tray 42.
Reclaim by cleaning unit 35 attached to remaining toner on the peripheral part of the photoreceptor 31 after toner being looked like to be transferred on the paper and paper powder etc.
Fig. 2 is the local amplification view of the image forming part that image processing system possessed of using the cleaning device of embodiments of the present invention.
As shown in Figure 2, cleaning unit 35 relatively is formed with peristome 35a with the peripheral part of photoreceptor 31 on shell 35b.Again, cleaning unit 35 has cleaner plate 35c, conveying screw rod 35d and toner and falls to preventing sheet 35e.
At this, utilizing charged polarity is that the resin molding of the reversed polarity of toner forms toner and falls to preventing sheet 35e, be electricly to utilize charged characteristic to attracted to toner attached to the remaining toner on the peripheral part of photoreceptor and paper powder to fall to preventing on the sheet because can make, so being attached to toner from the peripheral part of photoreceptor easily attached to the remaining toner on the peripheral part of photoreceptor and paper powder falls to preventing to remove easily on the sheet.Again, because can prevent to damage the peripheral part of photoreceptor by using resin molding to constitute.In addition, toner falls to preventing the thickness of sheet 35e, preferred 0.05～0.01mm.Because when blocked up, damage the peripheral part of photoreceptor 31 easily, again, served as the shape that can not keep the toner whereabouts to prevent sheet 35e when approaching.
Fig. 3 is the local amplification view of outward appearance of using the cleaning device of embodiments of the present invention.As shown in Figure 3, toner falls to preventing sheet 35e, utilizes sheet installing component 35f to be fixed on the shell 35b perpendicular to the 1st end side of the direction of longitudinally.Sheet installing component 35f, toner fall to preventing that the middle body of longitudinally of sheet 35e side is cut.
Therefore, shown in Fig. 4 (A), (B), toner falls to preventing the fixed position perpendicular to a side of above-mentioned the 1st end on the direction of longitudinally of sheet 35e, and is different mutually with its part place in addition at the middle body of longitudinally.
Therefore, fall to preventing from the toner shown in Fig. 4 (A) sheet 35e longitudinally the central portion office the said fixing position, to the drift L1 of the contact position of a side and peripheral part photoreceptor 31 of the 2nd end, greater than the said fixing position on the part beyond the middle body of the longitudinally that falls to preventing sheet 35e from the toner shown in Fig. 4 (B), to the drift L2 of the contact position of a side and peripheral part photoreceptor 31 of the 2nd end.Again, cleaning unit 35 shown in 4 (A), (B), utilizes the driving of conveying screw rod 35d etc. and vibrates.Therefore, the toner with drift L1 longer than drift L2 falls to preventing that the middle body of the longitudinally of sheet 35e, amplitude ratio toner from falling to preventing that the part beyond the middle body of longitudinally of sheet 35e is big.Its result falls to preventing the middle body of the longitudinally of sheet 35e at toner, and aforementioned the 2nd end is left or the peripheral part of butt photoreceptor 31 easily.
At this, most paper powder is the separated parts 24 of paper that transport from paper supply tray 21 grades when image forms when isolating 1, owing to friction of paper and separating component 24 etc. produces.In embodiments of the present invention, separating component 24 contacts with paper at the middle body of the sub scanning direction of paper, so produce the paper powder from the middle body of the sub scanning direction of paper.
Again, the paper powder, utilize with the paper sheet delivery way in the friction of not shown conveying roller etc. and charged, so the toner on the peripheral part of transfer printing photoreceptor 31 as the time peripheral part attached to photoreceptor 31 on.
Therefore, the place that the paper powder hold-up on the peripheral part of photoreceptor 31 is many becomes the relative place of middle body with the sub scanning direction of paper, with regard to photoreceptor 31 axially with regard to attached to the amount difference of the paper powder of the peripheral part of photoreceptor 31.
On the other hand, because the paper powder is mobile poor, so shown in Fig. 5 (A), the paper powder P that the plate 35c that is cleaned wipes off is deposited in toner easily to be fallen to preventing on the sheet 35e.Toner falls to preventing sheet 35e, because the peripheral part of contact photoreceptor 31, so toner falls to preventing contact portion and the also easy bulk paper powder of periphery thereof sheet 35e and peripheral part photoreceptor 31.Therefore, on longitudinally, fall to preventing that what of amount of the paper powder P that piles up on the sheet 35e are corresponding with what of the paper powder hold-up of the peripheral part of relative photoreceptor 31 at toner.
As above-mentioned structure, by making many local relative toners of paper powder hold-up on the peripheral part with photoreceptor 31 fall to preventing that the drift L1 of middle body of the longitudinally of sheet 35e from increasing the amplitude of vibration greater than drift L2, shown in Fig. 5 (B), can make the paper powder utilize vibration easily and break away from the toner whereabouts and prevent sheet 35e and reclaim from peristome 35a.
At this, the paper powder can more reclaim by the peristome 35a in the downstream of arrow Y direction from being positioned at the allocation position that falls to preventing sheet 35e than toner, is because because the rotation of the arrow Y direction of photoreceptor 31 and produce wind in arrow Y direction.That is, paper powder P is not because vibration becomes bulk and prevent that from the toner whereabouts sheet 35e from peeling off, so flow into peristome 35a by this air-flow.Therefore, can fall to preventing that the relative part of above-mentioned paper powder delay place of sheet 35e from effectively reclaiming the paper powder with the toner of easy bulk paper powder.
Again, as mentioned above, constitute drift L1, the L2 that toner falls to preventing sheet 35e owing to corresponding with the middle body of the sub scanning direction of paper, this middle body is the contact portion of the nidus that becomes paper powder P that contacts with separating component 24 of paper, toner falls to preventing the drift L1 of the more local relative part of paper powder hold-up on sheet 35e and peripheral part photoreceptor 31 so can extend, and can fall prevent the more effective recovery paper of the part powder P that the paper powder P on the sheet 35e easily piles up at toner.
And by using sheet installing component 35f to constitute the length of drift L1, L2, thereby in order to constitute above-mentioned drift L1, L2, toner fall to preventing on the sheet 35e and peripheral part photoreceptor 31 the contact portion side the other end shape without limits, so form the above-mentioned other end abreast by longitudinally with paper, its peripheral part with photoreceptor 31 is suitably contacted, can utilize toner to fall to preventing that sheet 35e from accepting paper powder P and remaining toner that the plate 35c that is cleaned wipes off.
In addition, in embodiments of the present invention, paper powder delay place on the peripheral part of photoreceptor 31 is made as the axial middle body of photoreceptor 31, but is not particularly limited, will the part relative be made as paper powder delay portion and get final product with the paper powder place that produces paper owing to separating component 24.
Fig. 7 is the local amplification view of the image forming part that image processing system possessed of using the cleaning device of another embodiment of the present invention.The cleaning device of present embodiment utilizes cleaning unit 35 and paper separation claw 38 to constitute.Structure about cleaning unit 35 is the same with Fig. 2.
In Fig. 7, paper separation claw 38, being configured in picture carries between the transfer device 34 and cleaning unit 35 of the peripheral part of holding body 31, carry the upstream side of cleaning unit 35 rotation direction of holding body 31 at the picture that image information is carried rotation as electrostatic latent image and visual picture with holding, carry the peripheral part of holding body 31 with respect to said image and carry out clutch action.This paper separation claw 38 is provided with to make and is adsorbed on picture and carries the paper stripping portion 38a hold the paper M on the body 31 and to peel off, fall to preventing the vibration section 38b of sheet 35e vibration along with clutch action makes the toner that is provided with on the aforementioned cleaning unit.
Again, paper separation claw 38 corresponding 1 center of rotation have 2 place's application points, and the 1st application point is the paper stripping portion 38a that relative said image is carried the peripheral part clutch of holding body, and the 2nd application point is the vibration section 38b that the aforementioned toner of butt falls to preventing sheet 35e.
Therefore, utilize paper separation claw 38 with 1 center of rotation 38c rotation that is the center, carry out the 1st application point place and be adsorbed on the vibration that toner that picture carries peeling off of paper M on the peripheral part 31 of holding body and the 2nd application point place falls to preventing sheet 35e.
Again, the paper stripping portion 38a of the application point of separation claw 38 and vibration section 38b, 38c is positioned at both sides across center of rotation, thus when with center of rotation 38c be the center when rotating paper stripping portion 38a and vibration section 38b move round about.
Therefore, vibration section 38b carries at paper stripping portion 38a contact picture that [Fig. 7 (A)] makes toner fall to preventing that sheet 35e is positioned at cleaning unit 35 sides when holding body 31, and [Fig. 7 (B)] made toner fall to preventing that sheet 35e is positioned at picture and carries and hold body 31 sides when paper stripping portion 38a left photoreceptor 31.
Again, paper separation claw 38 has the triboelectric characteristic of the polarity identical with the charged characteristic of remaining toner.Thereby remaining toner can not prevent that paper M is stained by remaining toner by paper separation claw 38 attached on the paper separation claw 38.
Fig. 8 (A) and Fig. 8 (B) are the sectional view and the vertical views of outward appearance of the paper separated part on the sheet feed section of the aforementioned image processing system of expression.
At this, paper powder P produces in a large number, reason be the paper M that transports from paper supply tray 21 grades when forming of image on feed rolls 24a and plate member 24b during 1 paper feed, paper M and feed rolls 24a and plate member 24b produce and rub etc.In embodiments of the present invention, feed rolls 24a and plate member 24b are owing to contact with paper M at the middle body of the sub scanning direction of paper M, so from the paper powder generating unit Ma generation paper powder P as the middle body of the sub scanning direction of paper M.
Again, paper powder P, in paper sheet delivery way, utilize with the friction of not shown conveying roller etc. charged, so transfer printing look like to carry on the peripheral part of holding body 31 toner as the time carry attached to picture and to hold on the peripheral part of body 31.Therefore, on the paper powder attachment portion 31a of the middle body that carries the vertical direction of throughput direction on the peripheral part hold body 31 as picture, be detained a lot of paper powder P with paper M, and picture carry hold body 31 axially on carry the paper powder P on the peripheral part of holding body 31 attached to picture the amount difference.That is, paper powder P produces manyly near picture carries the axial central authorities of holding body 31.
Again, hold reliable release papers M on the body 31, so must be in axial a plurality of position effect peeling forces in order to carry from picture.Therefore, as shown in Figure 9, be provided with paper separation claw 38 as the central portion of axial (perpendicular to the direction of sheet transport direction) of carrying the peripheral part of holding body 31 and this 3 place, both sides of central portion.
On the other hand, paper powder P is mobile poor, so shown in Figure 10 (A), the paper powder P that the plate 35c that is cleaned wipes off easily is deposited in toner to be fallen to preventing on the sheet 35e.Toner falls to preventing sheet 35e because the contact picture carries the peripheral part of holding body 31, so toner fall to preventing sheet 35e carry also easy bulk paper powder P of the contact portion of the peripheral part of holding body 31 and periphery thereof with picture.At this, paper powder P can more reclaim by the peristome 35a in the downstream of arrow Y direction from being positioned at the allocation position that falls to preventing sheet 35e than toner, is to produce wind because utilize picture to carry the rotation of the arrow Y direction of holding body 31 in arrow Y direction.That is, shown in Figure 10 (B), the toner that paper powder P utilizes the vibration section 38b by paper separation claw 38 to cause falls to preventing the vibration of sheet, does not become bulk and falls to preventing that sheet 35e from peeling off from toner, so flow into peristome 35a by this air-flow.Therefore, the part local relative with above-mentioned paper powder P delay that can fall to preventing sheet 35e at the toner of easy bulk paper powder P effectively reclaims paper powder P.Because falling to preventing sheet 35e, toner utilizes the vibration of vibration section 38b of the M of release papers one by one of paper separation claw 38 and activity, so fine powder also can be removed again.
Claims (4)
1, a kind of cleaning device has:
Cleaning unit has with picture and carries the peripheral part opening opposing portion hold body, is configured in than being formed at this picture to carry the position that the toner of holding on the body looks like to be transferred on the paper and more lean on the downstream;
Cleaner plate is arranged in the aforementioned cleaning unit, and leading section butt said image is carried the peripheral part of holding body and wiped off attached to this picture and carry the remaining toner hold on the body;
Toner falls and to prevent sheet, is arranged in the aforementioned cleaning unit and longitudinally and said image are carried the sheet material of the axially parallel of holding body, is positioned at the upstream side that more carries the rotation direction of holding body than the aforementioned peristome of aforementioned cleaning unit main body by said image;
Aforementioned toner falls to preventing sheet, the 1st end of the direction vertical with above-mentioned longitudinally is fixed on the aforementioned cleaning unit, 2nd end relative with aforementioned the 1st end is connected to said image and carries on the peripheral part of holding body, fixed position from aforementioned the 1st end, be connected to said image to aforementioned the 2nd end and carry in the drift of position of the peripheral part of holding body, said image carry hold body axially on dispose be used for 1 on aforementioned paper be transported to with opening said image carry the regional corresponding drift of the separating component of holding body set for greater than with in addition regional corresponding drift.
2, cleaning device as claimed in claim 1, it is characterized in that: fall to preventing in the sheet at aforementioned toner, carry the paper powder hold-up of the aforementioned peripheral part of holding body 1st drift corresponding with said image, than to carry the 2nd corresponding drift of the less place of paper powder hold-up of the aforementioned peripheral part of holding body long with said image than many places.
3, cleaning device as claimed in claim 2 is characterized in that:
Also have aforementioned toner fallen to preventing that sheet is fixed on the sheet installing component in the aforementioned cleaning unit,
Aforementioned toner falls to preventing the aforementioned fixation position of aforementioned the 1st end of sheet with respect to aforementioned installing component, comprise 1st fixed position corresponding and 2nd fixed position corresponding with aforementioned the 2nd drift with aforementioned the 1st drift, aforementioned the 1st fixed position is set in than aforementioned the 2nd fixed position further from the position that said image is carried the aforementioned peripheral part of holding body, so that aforementioned the 1st drift is longer than aforementioned the 2nd drift.
4, cleaning device as claimed in claim 1 is characterized in that: aforementioned toner falls to preventing that sheet from being resin molding, and is charged with the charged characteristic reversed polarity ground of toner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP344705/2003 | 2003-10-02 | ||
| JP344704/2003 | 2003-10-02 | ||
| JP2003344704A JP3680175B2 (en) | 2003-10-02 | 2003-10-02 | Paper peeling nails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1864109A CN1864109A (en) | 2006-11-15 |
| CN100520639C true CN100520639C (en) | 2009-07-29 |
Family
ID=34538251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800288884A Expired - Fee Related CN100520639C (en) | 2003-10-02 | 2004-10-01 | Cleaning device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3680175B2 (en) |
| CN (1) | CN100520639C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5389144B2 (en) * | 2011-11-18 | 2014-01-15 | シャープ株式会社 | Image forming apparatus |
| JP5719790B2 (en) * | 2012-03-14 | 2015-05-20 | 京セラドキュメントソリューションズ株式会社 | Cleaning device, image carrier unit including the same, and image forming apparatus |
| JP6743397B2 (en) * | 2016-01-26 | 2020-08-19 | コニカミノルタ株式会社 | Image forming device |
| JP6686478B2 (en) * | 2016-02-01 | 2020-04-22 | 富士ゼロックス株式会社 | Image forming device |
| CN113579460B (en) * | 2021-07-22 | 2022-12-02 | 广东省科学院中乌焊接研究所 | Method for removing metal binder of stirring head |
-
2003
- 2003-10-02 JP JP2003344704A patent/JP3680175B2/en not_active Expired - Fee Related
-
2004
- 2004-10-01 CN CNB2004800288884A patent/CN100520639C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1864109A (en) | 2006-11-15 |
| JP2005114757A (en) | 2005-04-28 |
| JP3680175B2 (en) | 2005-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20201001 |