CN101279550B - Transfer printing belt device and self-turning method of transfer printing belt - Google Patents
Transfer printing belt device and self-turning method of transfer printing belt Download PDFInfo
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- CN101279550B CN101279550B CN2008100904706A CN200810090470A CN101279550B CN 101279550 B CN101279550 B CN 101279550B CN 2008100904706 A CN2008100904706 A CN 2008100904706A CN 200810090470 A CN200810090470 A CN 200810090470A CN 101279550 B CN101279550 B CN 101279550B
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Abstract
The invention provides a transfer printing belt device and a self-steering method of the transfer printing belt; by means of a leading screw, the transfer printing belt device of the invention transfers the rotation of a rear-side measuring roll or a front-side measuring roll contacting with a reinforcing rib of the transfer printing belt to rotate to a steering roll so as to cause the steering roll to deflect, thereby limiting the bending running of the transfer printing belt.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
The present invention is based on and require in the 60/912nd of submission on March 17th, 2007, No. 202, on August 23rd, 2007 submit to the 60/957th, No. 695 and on August 23rd, 2007 submit to the 60/957th, the right of priority of No. 697 these three U.S. Patent applications formerly, its full content is hereby expressly incorporated by reference.
Technical field
The present invention relates to be installed in the jointless band in the image processing system, relate in particular to the belt transfer device of the image processing system that limit flexion is advanced when jointless band mobile and the self-turning method of transfer belt.
Background technology
In the image processing system of the multi-function peripheral (MFP:Multi FunctionalPeripheral) of series system or printer etc., the toner image of polychrome is superposeed transfer printing successively on transfer belt, thereby form the color toner image.In this series system,,, the color changing of the relative positions significantly descends owing to making the color toner image quality in images when transfer belt bends when advancing.In view of such situation, all the time, have the device that the bending that is used to revise transfer belt is advanced.As one of such device, for example disclose following band drive unit in No. 2868879 communique of Jap.P.: the slewing rollers (steering roller) that switch the moving direction of transfer belt tilt owing to the rotation equilibrium of forces of the deflector roll of the elastic force of spring and slewing rollers both sides.
Yet, in above-mentioned conventional device because to the elastic force of the mobile use spring of slewing rollers, so lack high speed and reliability, be not suitable for being installed to require high image quality, among high-performance and the MFP at a high speed etc.
Therefore, when transfer belt bends when advancing, transfer belt is got back on the regular direction at high speed.Thus, can expect to develop the belt transfer device of the image processing system of the high-quality coloured image that can obtain not have the color changing of the relative positions.
Summary of the invention
The present invention in view of the above problems, purpose is to provide belt transfer device, it can be advanced to the bending of slewing rollers transmission transfer belt at a high speed and correctly, the moving direction of transfer belt is adapted to regular direction, prevent the color changing of the relative positions of a plurality of toner images on the transfer belt, thereby can obtain high-quality color toner image reliably.
According to an aspect of the present invention, provide belt transfer device, it comprises: transfer belt, be used to support image, and rotation is moved; First measuring roll contacts with the first end of the Width of above-mentioned transfer belt and rotates; Second measuring roll contacts with the above-mentioned first end opposite second end of above-mentioned transfer belt and rotates; First transfer part, the above-mentioned rotation that is used to transmit above-mentioned first measuring roll or above-mentioned second measuring roll; And slewing rollers, the deflection by the above-mentioned rotation of transmitting by above-mentioned first transfer part, thus change the direction that the above-mentioned rotation of above-mentioned transfer belt is moved.
According to a further aspect in the invention, provide the self-turning method of transfer belt, having comprised: by rotating the rear side measuring roll, by rotating the front side measuring roll with the preceding side contacts of above-mentioned transfer belt with the back side contacts of rotating the transfer belt that moves; Rotate by first rotation of above-mentioned rear side measuring roll generation or by second of above-mentioned front side measuring roll generation to the slewing rollers transmission; And above-mentioned first rotation or above-mentioned second rotation by above-mentioned transmission, the above-mentioned slewing rollers of deflection change the direction that the rotation of above-mentioned transfer belt is moved.
Description of drawings
Fig. 1 is the summary construction diagram of major part that the printer portion of the first embodiment of the present invention is shown;
Fig. 2 is the approximate three-dimensional map that the conveyor unit of the first embodiment of the present invention is shown;
Fig. 3 is the approximate three-dimensional map that the state of conveyor unit after removing transfer belt of the first embodiment of the present invention is shown;
Fig. 4 is the approximate three-dimensional map after conveyor unit that the first embodiment of the present invention is shown is cut off a part of transfer belt;
Fig. 5 A is the diagrammatic illustration figure of self-steering mechanism (self steeringmechanism) that the first embodiment of the present invention is shown;
Fig. 5 B is the approximate three-dimensional map of lead screw (lead screw) that the first embodiment of the present invention is shown;
Fig. 6 is the diagrammatic illustration figure that the self-steering mechanism of the forward situation of the transfer belt of the first embodiment of the present invention is shown;
Fig. 7 is the diagrammatic illustration figure of the self-steering mechanism of the situation after transfer belt that the first embodiment of the present invention is shown is leaned on;
Fig. 8 is the diagrammatic illustration figure of state that the rear side measuring roll of the rear side reinforcement contact first embodiment of the present invention is shown;
Fig. 9 illustrates the diagrammatic illustration figure of the rear side measuring roll of the first embodiment of the present invention from the state of rear side reinforcement separation;
Figure 10 is the diagrammatic illustration figure of rear side measuring roll that the first embodiment of the present invention is shown sense of rotation when rotating by transfer belt, the rear side measuring roll;
Figure 11 is the diagrammatic illustration figure that the self-steering mechanism of the second embodiment of the present invention is shown;
Figure 12 is the diagrammatic illustration figure that the self-steering mechanism of the forward situation of the transfer belt of the third embodiment of the present invention is shown; And
Figure 13 is the diagrammatic illustration figure of the self-steering mechanism of the situation after transfer belt that the third embodiment of the present invention is shown is leaned on.
Embodiment
Be example with the accompanying drawing below, the first embodiment of the present invention is elaborated.Fig. 1 illustrates the conveyor unit 1 that the first embodiment of the present invention is installed and the coloured image of the four consecutives connection mode that forms forms the summary construction diagram of major part of the printer portion 2 of device.Printer portion 2 is along the downside of the transfer belt 10 of rotating to arrow s direction, and arranged in series has black (K), yellow (Y), magenta (M), cyan (C) image formation unit (station) 11K, 11Y, 11M and 11C of all kinds.Printer portion 2 has laser explosure device 17, and wherein, this laser explosure device 17 is used for to photosensitive drums 12K, the 12Y of image formation unit 11K, 11Y, 11M and 11C of all kinds, 12M and the 12C irradiation laser beam corresponding with image information.
The image formation unit 11K of the black of printer portion 2 (K) constitutes and dispose charger 13K, developing apparatus 14K, transfer roll 18K, clearer 16K around the photosensitive drums 12K that rotates along arrow m direction.Yellow (Y), magenta (M), image formation unit 11Y, the 11M of all kinds of cyan (C), 11C form identical structure with the image formation unit 11K of black (K).
First end transfer belt 10, Width in conveyor unit 1 is for example thin-line-shaped reinforcement (rib) 10a of rubber system that is formed with in interior week of rear end.And transfer belt 10, the second end is for example thin-line-shaped reinforcement 10b of rubber system that is formed with in interior week of anterior end.As shown in Figures 2 and 3, slewing rollers (steering roller) 28a by driven roller 20, driven voller 21 and first jockey pulley～the 3rd jockey pulley 22～24 and self-steering mechanism 28 sets up transfer belt 10.On the secondary transfer printing position that the driven voller 21 by transfer belt 10 supports, relatively dispose secondary transfer roller 30.On the secondary transfer printing position, by the transfer bias of supplying with by secondary transfer roller 30, with the toner image secondary transfer printing on the transfer belt 10 to on the paper P etc.In addition, the structure of conveyor unit 1 is not limited thereto.
By the beginning printing, on the image formation unit 11K of black (K),, and make its uniform charged in the printer portion 2 by charger 13K along arrow m direction rotating photosensitive drum 12K.Then, by laser explosure device 17, the illuminated exposure corresponding of photosensitive drums 12K and form electrostatic latent image with image information.Then, photosensitive drums 12K utilizes developing apparatus 14K to form toner image.And, the toner image on the photosensitive drums 12K on the transfer roll 18K position by primary transfer to along on the transfer belt 10 of arrow s direction rotation.After primary transfer finished, photosensitive drums 12K utilized clearer 16K to remove residual toner, printed to realize next time.
The image formation unit 11K of image formation unit 11Y, 11M, 11C and the black (K) of all kinds of yellow (Y), magenta (M), cyan (C) similarly carries out image and forms operation.At each toner image quilt of the yellow (Y) of each image formation unit 11Y, 11M of yellow (Y), magenta (M), cyan (C), the last formation of 11C, magenta (M), cyan (C) primary transfer successively on transfer belt 10.Thus, the toner image of multiple transfer printing black (K), yellow (Y), magenta (M), cyan (C) on transfer belt 10, thus form panchromatic toner image.
Then, the panchromatic toner image superimposed with transfer belt 10 arrives the secondary transfer printing position, by the transfer bias of secondary transfer roller 30, by secondary transfer printing together on paper P.Arrive the secondary transfer printing position synchronous with the panchromatic toner image on the transfer belt 10, be provided to the secondary transfer printing position with paper P.Then, transfer printing panchromatic toner image finish print image with paper P through photographic fixing, paper is arranged by portion to row's paper.
Then, self-steering mechanism 28 is described in detail.As Fig. 4, Fig. 5 A, Fig. 5 B and shown in Figure 6, back up pad 36 supports that to have first measuring roll that the bending that detects transfer belt 10 advances be that the rear side measuring roll 37a and second measuring roll are the test section 36a of front side measuring roll 37b and the turning part 36b with slewing rollers 28a.In addition, to support first transfer part that rotation separately with rear side measuring roll 37a and front side measuring roll 37b passes to slewing rollers 28a and stay (stay) 37c be connecting portion 36c for back up pad 36.
In test section 36a, the measuring roll support component promptly detects roll shaft 38 and has rear side measuring roll 37a and front side measuring roll 37b in its both sides.Detecting roll shaft 38 is supported by stay 37c.When transfer belt 10 was maintained on the regular position, rear side measuring roll 37a and front side measuring roll 37b separated with reinforcement 10a, the 10b of transfer belt 10.As shown in Figure 6, when transfer belt 10 forward ground bendings are advanced, the interior side contacts of the reinforcement 10a of rear side measuring roll 37a and rear side.As shown in Figure 7, when transfer belt 10 is advanced by back ground bending, the interior side contacts of the reinforcement 10b of front side measuring roll 37b and front side.Rear side measuring roll 37a and front side measuring roll 37b do not contact with detecting roll shaft 38, and by contacting with reinforcement 10a, the 10b of transfer belt 10, rear side measuring roll 37a and front side measuring roll 37b are rotated respectively.
Connecting portion 36c comprises by the posterior lateral tooth wheel unit 39 of rear side measuring roll 37a driving, reaches the anterior lateral tooth wheel unit 40 that drives by front side measuring roll 37b.Posterior lateral tooth wheel unit 39 comprises the first backgear 39a, the second backgear 39b, the 3rd backgear 39c.Anterior lateral tooth wheel unit 40 comprises the first front gear 40a, the second front gear 40b, the 3rd front gear 40c.And connecting portion 36c comprises the lead screw 41 of the right-hand thread that connects the 3rd backgear 39c and the 3rd front gear 40c.But lead screw 41 constitutes and clips reversing device by rear side lead screw 41a and front side lead screw 41b is counter gear 45.Shown in Fig. 5 B, counter gear 45 comprises rear side counter gear 45a and front side counter gear 45b.Thereby counter gear 45 makes the rotation counter-rotating of the 3rd front gear 40c pass to stay 37c and turning part 36b.The interior week engagement of the carriage 44 of rear side lead screw 41a and stay 37c.
In addition, the first gear 42a of rear side lead screw 41a and rack pinion (rack pinion) mechanism 42 engagement.Rack and pinion mechanism 42 comprise the first gear 42a, with the second gear 42b of this first gear 42a engagement, and the 3rd gear 42c that meshes with the second gear 42b.The 3rd gear 42c turns to supporter 43.By this rotation that turns to supporter 43, deflection takes place with respect to axle in the slewing rollers 28a that is diverted supporter 43 supports.
In addition, because the rotation of rear side lead screw 41a, connecting portion 36c makes stay 37c slide along the Width of transfer belt 10 via carriage 44.
Then, the effect to self-steering mechanism 28 describes.In printer portion 2, when printing operating period, transfer belt 10 does not bend and advances and when rotation was mobile on regular position, self-steering mechanism 28 was failure to actuate.On the other hand, printing operating period, when transfer belt 10 bendings were advanced, the bending that self-steering mechanism 28 detects transfer belt 10 was advanced, deflection slewing rollers 28a, thereby the moving direction of correction transfer belt 10.
Utilize Fig. 6, for example deflection when transfer belt 10 forward ground bendings are advanced, slewing rollers 28a is described.In addition, the sense of rotation of each gear described herein is the sense of rotation when rear side is observed.1. when transfer belt 10 during near the front side, the inboard of the reinforcement 10a of the rear side of transfer belt 10 contacts with rear side measuring roll 37a.2. thus, the rear side measuring roll 37a of test section 36a drives the reinforcement 10a rotation of rear side, for example to right rotation.
3. by connecting portion 36c, the rotation of rear side measuring roll 37a is passed to turning part 36b, thus deflection slewing rollers 28a.That is, by the rotation of rear side measuring roll 37a, with the coaxial first backgear 39a of rear side measuring roll 37a to right rotation (r1), the second backgear 39b to anticlockwise (11), the 3rd backgear 39c to right rotation (r2).Thus, the rear side lead screw 41a that connected of the 3rd backgear 39c is also to right rotation (r3).Then, the right side lead screw 41a's of right-hand thread is delivered to rack and pinion mechanism 42 to right rotation (r3).That is, to right rotation (r5) the first gear 42a, to anticlockwise (12) second gear 42b, and to right rotation (r6) the 3rd gear 42c.
4. since the 3rd gear 42c to right rotation (r6), so turn to supporter 43 and the slewing rollers 28a that supported along arrow v direction deflection.That is, transfer belt 10 is created in the power of conveyance band on the direction vertical with the axis alpha of the slewing rollers 28a of deflection shown in the dotted line of Fig. 6.Thus, revise moving direction so that transfer belt 10 become lean on after.
In addition, the angle that is used to revise deflection moving direction, slewing rollers 28a of transfer belt 10 does not limit, but in the present embodiment, for example, even under the situation of off-centring ± 1mm of transfer belt 10 from the design, because that slewing rollers 28a takes place is maximum ± and 3 ° deflection, so also moving direction can be modified to regular direction.
When because the deflection of above-mentioned slewing rollers 28a, when the moving direction of transfer belt 10 was modified to regular direction, the reinforcement 10a of the rear side of transfer belt 10 separated from rear side measuring roll 37a, stops rear side measuring roll 37a.But, after slewing rollers 28a rotates, till the moving direction of transfer belt 10 is corrected, can produce time lag.In the meantime, if rear side measuring roll 37a rotation, then the amount of spin of slewing rollers 28a is excessive.This result is to cause transfer belt 10 to rely on rear side.Therefore, by the rotation of rear side measuring roll 37a, rear side measuring roll 37a moves along the Width of transfer belt 10.Therefore, rear side measuring roll 37a can separate from transfer belt 10 before the moving direction of revising transfer belt 10.This result is to prevent that the amount of spin of slewing rollers 28a is excessive.
Then, the effect that the driving by connecting portion 36c is stopped rear side measuring roll 37a is described.1. as shown in Figure 8, by by with the rotation that causes rear side measuring roll 37a that contacts of the reinforcement 10a of transfer belt 10, thereby drive connecting portion 36c.2. this moment connecting portion 36c the rear side lead screw 41a of right-hand thread to right rotation (r3).Therefore, with the carriage 44 of rear side lead screw 41a engagement forwards be that the arrow w direction of Fig. 6 moves, thereby stay 37c is moved to arrow w direction.Thus, as shown in Figure 9, moved to arrow w direction by the rear side measuring roll 37a that stay 37c supports by detecting roll shaft 38.Consequently, rear side measuring roll 37a separates and stops from the rear side reinforcement 10a of transfer belt 10.
But when the deflection of slewing rollers 28a was not enough, the reinforcement 10a of rear side contacted with rear side measuring roll 37a once more.Thus, rear side measuring roll 37a is rotated once more, thus further deflection slewing rollers 28a.And, to separate from rear side reinforcement 10a with rear side measuring roll 37a, the contact force to rear side measuring roll 37a that is produced by rear side reinforcement 10a dies down.Thus, the rotation amount of rear side measuring roll 37a reduces.Carry out the rotation of this rear side measuring roll 37a repeatedly and stop, revising the moving direction of transfer belt 10, thereby limit flexion is advanced and reached rotation stably and move.
Then, utilize Fig. 7, deflection when transfer belt 10 is advanced by ground, back is crooked, slewing rollers 28a is described.In addition, the sense of rotation of each gear described herein is the sense of rotation when rear side is observed.1. when transfer belt 10 during near rear side, the inboard butt front side measuring roll 37b of the reinforcement 10b of the front side of transfer belt 10.2. thus, the front side measuring roll 37b of test section 36a is by the reinforcement 10b driven rotary of front side and to right rotation.
3. since front side measuring roll 37b to right rotation, with the coaxial first front gear 40a of front side measuring roll 37b to right rotation (r7), the second front gear 40b is to anticlockwise (13), the 3rd front gear 40c is to right rotation (r8).Thus, also transmitted on the front side lead screw 41b that the 3rd front gear 40c is connected to right rotation (r9).This front side lead screw 41b makes rear side lead screw 41a to anticlockwise (14) to right rotation (r9) by counter gear 45.This rear side lead screw 41a is delivered to rack and pinion mechanism 42 to anticlockwise (14).That is, make the first gear 42a, make the second gear 42b, make the 3rd gear 42c to anticlockwise (16) to right rotation (r10) to anticlockwise (15).
4. since the 3rd gear 42c to anticlockwise (16), turn to supporter 43 and by the slewing rollers 28a of its support to arrow x direction deflection.That is, transfer belt 10 is created in the power of conveyance band on the direction vertical with the axis β of the slewing rollers 28a of deflection shown in the dotted line of Fig. 7.Thus, revise the moving direction of transfer belt 10, so that transfer belt 10 becomes is forward.
And, at this moment, by rear side lead screw 41a to anticlockwise (14), with the carriage 44 of rear side lead screw 41a engagement rearward be that the arrow y direction of Fig. 7 moves, and stay 37c is moved to arrow y direction.Thus, moved to arrow y direction by the front side measuring roll 37b that stay 37c supports, and separate and stop from the front side reinforcement 10b of transfer belt 10 by detecting roll shaft 38.Then, identical during near the front side with transfer belt 10, the moving direction of transfer belt 10 is revised in the rotation of front side measuring roll 37b and stopping repeatedly, and limit flexion is advanced, thereby stably is rotated mobile.
In this first embodiment, with respect to detecting roll shaft 38, rear side measuring roll 37a and front side measuring roll 37b rotate freely.In addition, for when rear side measuring roll 37a rotates and front side measuring roll 37b when rotation, the driving of counter-rotating slewing rollers 28a and stay 37c, lead screw 41 has counter gear 45.Therefore, according to the reinforcement 10a of transfer belt 10, side or the discontiguous side that 10b contacts, rear side measuring roll 37a and front side measuring roll 37b opposite spin.
For example, when the reinforcement 10a of rear side contact rear side measuring roll 37a, despining as shown in figure 10 takes place in rear side measuring roll 37a and front side measuring roll 37b.That is and since rear side measuring roll 37a to right rotation, the first backgear 39a is to right rotation (r1), the second backgear 39b is to anticlockwise (11), the 3rd backgear 39c is to right rotation (r2).Rear side lead screw 41a is to right rotation (r3).And, since counter gear 45, front side lead screw 41b despining, and therefore, the 3rd front gear 40c is to anticlockwise (L10).Therefore, the second front gear 40b is to right rotation (R10), and the first front gear 40a is to anticlockwise (L11), and front side measuring roll 37b and rear side measuring roll 37a are on the contrary to anticlockwise (L11).
According to present embodiment, advance by contact the bending that the rear side measuring roll 37a that rotates or front side measuring roll 37b detect transfer belt 10 with reinforcement 10a, the 10b of transfer belt 10.Rear side lead screw 41a by right-hand thread to slewing rollers 28a, and makes slewing rollers 28a deflection with the rotation transmission of rear side measuring roll 37a or front side measuring roll 37b, thereby revises the direction that the rotation of transfer belt 10 is moved.And the rear side lead screw 41a by right-hand thread passes to stay 37c with the rotation of rear side measuring roll 37a or front side measuring roll 37b, even exist side by side rear side measuring roll 37a or front side measuring roll 37b separate from reinforcement 10a, the 10b of transfer belt 10.Therefore, need not costliness and complicated control or mechanism, can be easily and the bending that limits transfer belt reliably advance.Consequently, can stablize the mobile transfer belt of rotation, and can obtain good transferred image.
Then, the second embodiment of the present invention is described.The structure of the transfer belt among this second embodiment and above-mentioned first embodiment is different, and the detection that the bending of transfer belt is advanced is opposite in rear side and front side.Therefore, the structure of first transfer part among second embodiment and above-mentioned first embodiment is different, and other are all identical with first embodiment.Therefore, in this second embodiment, to the identical structure additional phase of the illustrated structure of above-mentioned first embodiment with mark, and omit detailed description thereof.
As shown in figure 11, the bending that limits the transfer belt 50 that does not have reinforcement on the two ends in interior week of the self-steering mechanism 48 of second embodiment is advanced.When transfer belt 50 was maintained on the regular position, separated with rear side measuring roll 51a and front side measuring roll 51b at the two ends of transfer belt 50.Transfer belt 50 bends and advances and when contacting with the roll surface of rear side measuring roll 51a or front side measuring roll 51b, rear side measuring roll 51a or front side measuring roll 51b rotate.Can adjust the rotation amount of rear side measuring roll 51a and front side measuring roll 51b by the transfer belt 50 and the contact area of roll surface.Therefore, the width of the roll surface of rear side measuring roll 51a and front side measuring roll 51b is formed more than the width of the maximum deflection amount of travel that is equivalent to transfer belt 50 at least.Rack and pinion mechanism 52 comprises the 5th gear 52b with lead screw 53 engagement of left-hand thread (LHT).The lead screw 53 of left-hand thread (LHT) comprises rear side lead screw 53a and front side lead screw 53b across counter gear 54.In addition, carriage 44 and rear side lead screw 53a engagement.
Self-steering mechanism 48 is when for example the ground bending is advanced after transfer belt 50 is leaned on, and 1. the interior week of the rear end of transfer belt 50 contacts with the roll surface of rear side measuring roll 51a.2. thus, rear side measuring roll 51a is transferred and is with 50 driven rotary.The rotation and first embodiment of this rear side measuring roll 51a are passed to rear side lead screw 53a by posterior lateral tooth wheel unit 39 in the same manner.But, because lead screw 53 is a left-hand thread (LHT), so carry out making the 5th gear 52b to anticlockwise (19) to the rear side lead screw 53 of right rotation (r3).
4. by the 5th gear 52b to anticlockwise (19), turn to supporter 43 and by the slewing rollers 28a of its support to arrow w direction deflection.That is, transfer belt 50 is created in the power of conveyance band on the direction vertical with the axis γ of the slewing rollers 28a of deflection shown in the dotted line of Figure 11.Thus, revise the moving direction of transfer belt 50, so that it becomes is forward.
At this moment, with the carriage 44 of the rear side lead screw 53a of left-hand thread (LHT) engagement in the wings to being to move on the arrow y direction, thereby stay 37c is moved to arrow y direction.Thus, the rear side measuring roll 51a that is supported by stay 37c via detecting roll shaft 38 moves on arrow y direction.Consequently, rear side measuring roll 51a separates and stops from transfer belt 50.
In addition, the transfer belt 50 that is caused by the rotation of front side measuring roll 51b is carried out similarly to the deflection of arrow v direction.And when revising the moving direction of transfer belt 50, the interior week of transfer belt 50 separates from rear side measuring roll 51a, thereby rear side measuring roll 51a stops.
According to present embodiment, with first embodiment in the same manner, can be easily and the bending that limits transfer belt reliably advance, and can obtain good transferred image by stably rotating mobile transfer belt.And, need not on transfer belt, to form expensive reinforcement, can realize that the cost of transfer belt reduces.
In addition, in the present embodiment, the material of the roll surface of rear side measuring roll or front side measuring roll is not limited, can be formed yet with the big material of friction factor of for example rubber etc.Like this, can rear side measuring roll or front side measuring roll, and interior week of transfer belt between guarantee sufficient friction force.Consequently, rear side measuring roll or front side measuring roll can correctly detect the bending of transfer belt and advance, and can revise the moving direction of transfer belt more reliably.
Then, the third embodiment of the present invention is described.In the 3rd embodiment, compare with above-mentioned first embodiment, detect roll shaft and on the Width of transfer belt, do not move by the rear side measuring roll even the front side measuring roll of its support.In addition, the structure of first transfer part among this 3rd embodiment and above-mentioned first embodiment is different, and other are all identical with first embodiment.Therefore, in this 3rd embodiment, the structure identical with the illustrated structure of above-mentioned first embodiment marked same tag, and omitted detailed description thereof.
As shown in figure 12, the self-steering mechanism 58 of the 3rd embodiment has the mechanism that is used on the Width of transfer belt 10 moving the detection roll shaft 38 that is used to support rear side measuring roll 37a and front side measuring roll 37b.Connecting portion 60 passes to slewing rollers 28a with the rotation separately of rear side measuring roll 37a or front side measuring roll 37b.The posterior lateral tooth wheel unit 39 and the anterior lateral tooth wheel unit 40 of connecting portion 60 connect by coupling shaft 61.Coupling shaft 61 comprises the counter gear 61c as reversing device.Counter gear 61c reverses the rotation of the 3rd front gear 40c and passes to turning part 36b.Axle is connected with worm screw 62 on coupling shaft 61.Worm screw 62 meshes with the worm gear 63a of rack and pinion mechanism 63.Rack and pinion mechanism 63 comprises worm gear 63a, with coaxial the 7th gear 63b of worm gear 63a, and take turns 63c with the octadentate of the 7th gear 63b engagement.Octadentate wheel 63c turns to supporter 43.
Then, utilize Figure 12, deflection when advancing to for example transfer belt 10 is crooked forwardly, slewing rollers 28a describes.When transfer belt 10 contacts with rear side measuring roll 37a near the reinforcement 10a of the rear side of front sides and transfer belt 10, with above-mentioned first embodiment in the same manner, rear side measuring roll 37a is to right rotation (r1).Thus, on posterior lateral tooth wheel unit 39, the 3rd backgear 39c is to right rotation (r2).Thus, the coupling shaft 61 that connected of the 3rd backgear 39c is also to right rotation (r3).Then, being reversed to after anticlockwise (17) by counter gear 61c to right rotation (r3) of coupling shaft 61 is delivered to rack and pinion mechanism 63.That is, make worm gear 63a to anticlockwise (18), make octadentate wheel 63c with coaxial the 7th gear 63b engagement of worm gear 63a to right rotation (r12) to the worm screw 62 of anticlockwise (17).
By this octadentate wheel 63c to right rotation (r12), turn to supporter 43 and by the slewing rollers 28a of its support to arrow v direction deflection.That is, transfer belt 10 is created in the power of conveyance band on the vertical direction of the axis δ of the slewing rollers 28a of deflection shown in the dotted line with Figure 12.Thus, revise the moving direction of transfer belt 10, make it get back to state after leaning on.
By the deflection of above-mentioned slewing rollers 28a, the moving direction of transfer belt 10 is modified to regular direction and gets back to rear side.Thus, the reinforcement 10a of the rear side of transfer belt 10 separates from rear side measuring roll 37a, thereby rear side measuring roll 37a stops.
Then, utilize Figure 13, deflection when leaning on the bending of ground, back to advance to for example transfer belt 10, slewing rollers 28a describes.When transfer belt 10 near rear sides, when the reinforcement 10b of the front side of transfer belt 10 contacts with front side measuring roll 37b, with above-mentioned first embodiment in the same manner, on anterior lateral tooth wheel unit 40, the 3rd front gear 40c is to right rotation (r8).Thus, the coupling shaft 61 that connected of the 3rd front gear 40c is also to right rotation (r9).With this coupling shaft 61 to right rotation (r9), dextrorotary worm screw 62 makes worm gear 63a to right rotation (r14), makes octadentate wheel 63c with coaxial the 7th gear 63b of worm gear 63a engagement to anticlockwise (110).
By this octadentate wheel 63c to anticlockwise (110), turn to supporter 43 and by the slewing rollers 28a of its support to arrow x direction deflection.That is, transfer belt 10 is created in the power of conveyance band on the direction vertical with the axis ε of the slewing rollers 28a of deflection shown in the dotted line of Figure 13.Thus, revise the moving direction of transfer belt 10, make it get back to forward place.
By the deflection of above-mentioned slewing rollers 28a,, the moving direction of transfer belt 10 gets back to the front side thereby being corrected for regular direction.Thus, the reinforcement 10b of the front side of transfer belt 10 separates from front side measuring roll 37b, and stops front side measuring roll 37b.
According to present embodiment, with first embodiment in the same manner, can be easily and the bending that limits transfer belt reliably advance, and can move by the stable rotation of transfer belt and obtain good transferred image.And, by using worm screw 62 and worm gear 63a, can simplify the structure of transmission mechanism from the rotation of rear side measuring roll 37a or front side measuring roll 37b to slewing rollers 28a that transmit, and can realize that the cost of self-steering mechanism 58 reduces.
In addition, the present invention is not limited in the foregoing description, can carry out various variations within the scope of the invention, and for example, as long as the material of first measuring roll or second measuring roll is by rotating with contacting of transfer belt, and is unqualified to its structure or material etc.In addition, to the direction of the screw thread of the lead screw of first embodiment or to form threaded zone etc. also unqualified.In addition, the structure of printer portion can not be a series system also, uses swinging (revolver type) developing apparatus, the image on the single image-carrier is transferred on the transfer belt successively get final product.
Claims (19)
1. a belt transfer device is characterized in that, comprising:
Transfer belt is used to support image, and rotation is moved;
First measuring roll contacts with the first end of the Width of described transfer belt and rotates;
Second measuring roll contacts with the described first end opposite second end of described transfer belt and rotates;
First transfer part comprises the reversing device of the rotation of the rotation that connects described first measuring roll and described second measuring roll and the described rotation that is used to transmit described first measuring roll or described second measuring roll; And
Slewing rollers, the deflection by the described rotation of transmitting by described first transfer part, thus change the direction that the rotation of described transfer belt is moved.
2. belt transfer device according to claim 1 is characterized in that described slewing rollers are given tension force to described transfer belt.
3. belt transfer device according to claim 1, it is characterized in that, described first measuring roll is the rear side measuring roll that is positioned at the rear side of described transfer belt, described second measuring roll is the front side measuring roll that is positioned at the front side of described transfer belt, and described rear side measuring roll and the detected roller support component of described front side measuring roll one support.
4. belt transfer device according to claim 3, it is characterized in that, described slewing rollers are because the rotation of described rear side measuring roll, so that the mode of described transfer belt side shifting before described is carried out deflection, and because the rotation of described front side measuring roll, so that described transfer belt is carried out deflection to the mode that described rear side moves.
5. belt transfer device according to claim 1, it is characterized in that,, make described first measuring roll to the described second measuring roll side shifting by the rotation of described first measuring roll, by the rotation of described second measuring roll, make described second measuring roll to the described first measuring roll side shifting.
6. belt transfer device according to claim 1 or 5 is characterized in that described first transfer part comprises lead screw.
7. belt transfer device according to claim 1 or 5 is characterized in that described first transfer part comprises worm and worm wheel.
8. belt transfer device according to claim 1, it is characterized in that, described transfer belt comprises reinforcement on the interior week of the end of Width, described first measuring roll rotates by contacting with the described reinforcement of described first end, and described second measuring roll rotates by contacting with the described reinforcement of described the second end.
9. belt transfer device according to claim 8, it is characterized in that, described first measuring roll correspondence changes rotation amount with the contact force of the reinforcement of described first end, and described second measuring roll correspondence changes rotation amount with the contact force of the reinforcement of described the second end.
10. belt transfer device according to claim 1, it is characterized in that, described first measuring roll is by rotating with the contacting in interior week of described first end of described transfer belt, and described second measuring roll is by rotating with the contacting in interior week of described the second end of described transfer belt.
11. a belt transfer device is characterized in that, comprising:
Transfer belt is used to support image, and rotation is moved;
First measuring roll moves along the Width of described transfer belt, and contacts with the first end of the described Width of described transfer belt and rotate;
Second measuring roll moves along the described Width of described transfer belt, and contacts with the described first end opposite second end of described transfer belt and rotate;
First transfer part comprises the reversing device of the rotation of the rotation that connects described first measuring roll and described second measuring roll and the described rotation that is used to transmit described first measuring roll or described second measuring roll; And
Slewing rollers, the deflection by the described rotation of transmitting by described first transfer part, thus change the direction that the rotation of described transfer belt is moved.
12. belt transfer device according to claim 11 is characterized in that, described first measuring roll and described second measuring roll are because the Width along described transfer belt moves by the described rotation of the described first transfer part transmission.
13. the self-turning method of a transfer belt is characterized in that, comprising:
By rotating the rear side measuring roll, by rotating the front side measuring roll with the preceding side contacts of described transfer belt with the back side contacts of rotating the transfer belt that moves;
First rotation by being produced by described rear side measuring roll makes described rear side measuring roll side shifting before described, thereby transmits described first rotation to slewing rollers,
Second rotation by being produced by described front side measuring roll makes described front side measuring roll move to described rear side, thereby transmits described second rotation to slewing rollers; And
By described first rotation or described second rotation of transmitting, the described slewing rollers of deflection change the direction that the rotation of described transfer belt is moved.
14. the self-turning method of transfer belt according to claim 13, it is characterized in that described slewing rollers make described transfer belt to described front side deflection movably by described first rotation, by described second rotation, make described transfer belt to described rear side deflection movably.
15. the self-turning method of transfer belt according to claim 13 is characterized in that, utilizes lead screw, and described first rotation and described second rotation are passed to described slewing rollers.
16. the self-turning method of transfer belt according to claim 13 is characterized in that, utilizes worm and worm wheel, and described first rotation and described second rotation are passed to described slewing rollers.
17. the self-turning method of transfer belt according to claim 13 is characterized in that, the contact force of the corresponding described rear side measuring roll of rotation amount of described first rotation or described second rotation or the measuring roll of described front side and described transfer belt and changing.
18. the self-turning method of transfer belt according to claim 13, it is characterized in that, described transfer belt comprises reinforcement on the interior week of the end of Width, described rear side measuring roll rotates by contacting with the described reinforcement of described rear end, and described front side measuring roll rotates by contacting with the described reinforcement of described anterior end.
19. the self-turning method of transfer belt according to claim 13, it is characterized in that, described rear side measuring roll is by rotating with the contacting in interior week of rear end of described transfer belt, and described front side measuring roll is by rotating with the contacting in interior week of anterior end of described transfer belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100904706A CN101279550B (en) | 2008-04-16 | 2008-04-16 | Transfer printing belt device and self-turning method of transfer printing belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100904706A CN101279550B (en) | 2008-04-16 | 2008-04-16 | Transfer printing belt device and self-turning method of transfer printing belt |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102423498A Division CN101934649A (en) | 2008-04-16 | 2008-04-16 | Belt device and belt self-steering method |
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| Publication Number | Publication Date |
|---|---|
| CN101279550A CN101279550A (en) | 2008-10-08 |
| CN101279550B true CN101279550B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100904706A Active CN101279550B (en) | 2008-04-16 | 2008-04-16 | Transfer printing belt device and self-turning method of transfer printing belt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5041027B2 (en) * | 2010-04-27 | 2012-10-03 | コニカミノルタビジネステクノロジーズ株式会社 | Traveling roller, belt driving device and image forming apparatus using the same |
| JP6805509B2 (en) * | 2016-03-10 | 2020-12-23 | コニカミノルタ株式会社 | Image forming device |
| JP2019082498A (en) * | 2017-10-27 | 2019-05-30 | エイチピー プリンティング コリア カンパニー リミテッド | Belt driving device and image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598705A (en) * | 2003-09-19 | 2005-03-23 | 佳能株式会社 | Image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598705A (en) * | 2003-09-19 | 2005-03-23 | 佳能株式会社 | Image forming apparatus |
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