CN100454082C - Optical scanning device having scan line curvature correcting mechanim - Google Patents
Optical scanning device having scan line curvature correcting mechanim Download PDFInfo
- Publication number
- CN100454082C CN100454082C CNB2005800252340A CN200580025234A CN100454082C CN 100454082 C CN100454082 C CN 100454082C CN B2005800252340 A CNB2005800252340 A CN B2005800252340A CN 200580025234 A CN200580025234 A CN 200580025234A CN 100454082 C CN100454082 C CN 100454082C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- mirror
- length direction
- pressing component
- leaf spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
An optical scanning device for correcting the curvature of a scan line (22) by using fewer parts and efficiently. An optical scanning device (1) comprising a rotary polyhedral mirror (7) for scanning a light ray (3), a reflecting mirror (11) formed throughout the scanning direction area of the light ray (3), and performing scanning of the light ray (3) on an image carrier (12), wherein the reflecting mirror (11) is held as it is nipped between a support member (13) for supporting the reflecting mirror (11) and a pressing member (18) for pressing the reflecting mirror (11) toward the support member (13), and the pressing member (18) is movable in the main scanning direction of the light ray (3).
Description
Technical field
The present invention relates to be loaded into the such optical scanner of laser scan unit on the image processing systems such as duplicating machine or printer, particularly relate to the optical scanner of the scan line curvature correcting mechanim that has the amount of bow that to adjust catoptron, the bending of sweep trace is proofreaied and correct.
Background technology
As the color copy machine or the color printer that use the electronic photo recording technique, the image processing system with a plurality of image forming part tandem type configurations is arranged.The image processing system of this tandem type has the advantage that available recording medium is more, writing speed is also fast, becomes main force's mode that coloured image forms device in recent years gradually.
Each image forming part (normally 4 image forming parts) has: photoreceptor; Make the charged charged device of photoreceptor; By the optical scanner that charged photoreceptor is scanned with the corresponding laser of image information; The developer that the electrostatic latent image that forms on photoreceptor is developed by toner; To look like to be transferred to transfer belt electrical equipment on the recording chart (or intermediate transfer body) at the toner that forms on the photoreceptor.
In the image processing system of such tandem type, for the chromatography of the toner picture that suppresses to overlap 4 looks on the recording chart (or intermediate transfer body) inaccurate, need to proofread and correct shape, suppress the nemaline deviation of scanning based on the sweep trace of the laser that penetrates from each optical scanner.Though there are various correction projects, one of them is the curvature correction of sweep trace.
The reason that bends based on the sweep trace of laser is, exists with respect to the location tolerance of the optical box that is loaded in f θ lens on the optical scanner or catoptron, the various tolerances such as manufacturing tolerance of these optical elements itself.For example, in optical scanner, though loading the catoptron that the laser by polygonal mirror deflection is reflected,, with catoptron manufacture on the glass substrate of this catoptron, do not have warpage be very the difficulty, can have a little warpage usually.The warpage of this catoptron also is one of reason of scanning line bending.
As one of method that the bending of sweep trace is proofreaied and correct, the method that the degree of crook that is arranged on the laser mirror on the optical scanner is adjusted is arranged.For example, in Japanese kokai publication hei 8-146325 number, Japanese kokai publication hei 10-186257 number, Japanese kokai publication hei 11-231240 number, TOHKEMY 2000-180778 number, TOHKEMY 2000-235290 number, TOHKEMY 2000-258713 number, TOHKEMY 2001-117040 number, TOHKEMY 2003-270573 number, the optical scanner that is provided with mechanism's (scan line curvature correcting mechanim) that the degree of crook of catoptron is adjusted is disclosed.
The curvature correcting mechanim of being put down in writing in these patent documentations all is to adjust member by the catoptron pressing quantity at length direction central portion that is arranged on mirror or length direction both ends, adjusts the degree of crook of catoptron, the bending of correct scan line.
For example, the optical scanner of being put down in writing in TOHKEMY 2001-117040 number is pressing quantity to be set at the length direction both ends of catoptron adjust screw, by rotating this screw, adjusts the degree of crook of mirror.
In addition, the optical scanner of being put down in writing in TOHKEMY 2000-180778 number is that the length direction central portion at catoptron is provided with pressing quantity and adjusts screw, by rotating this screw, adjusts the degree of crook of mirror.
The invention provides a kind of optical scanner with the succinct scan line curvature correcting mechanim that substitutes these conventional arts.
Summary of the invention
The present invention makes in view of above-mentioned problem, and its purpose is to provide a kind of optical scanner with scan line curvature correcting mechanim of simple structure.
Other purposes of the present invention provide following optical scanner, and this optical scanner has: deflector, and the laser deflection that this deflector will penetrate from light source is to be scanned scan laser on the face; Optical element, this optical element will be by this laser aiming of above-mentioned deflector to being scanned face; Support near the support unit in length direction end of above-mentioned optical element; With collaborative with above-mentioned support unit, with above-mentioned optical element by the pressing component that is pressed on the above-mentioned support unit; The fulcrum of above-mentioned support unit is fixed, the press points of above-mentioned pressing component can be adjusted on this length direction, this optical scanner has adjusting mechanism, this adjusting mechanism is used for making above-mentioned pressing component under above-mentioned pressing component is pushed the state of above-mentioned optical element this press points slides along this length direction of above-mentioned optical element, slidably adjusts the distance on this length direction between this press points of this fulcrum of above-mentioned support unit and above-mentioned pressing component thus.
With reference to accompanying drawing, one side is read following detailed description, can clear and definite other purpose of the present invention by one side.
Description of drawings
Fig. 1 is the stereographic map of the optical scanner of embodiments of the present invention one.
Fig. 2 A, 2B are arranged near the stereographic map and the cut-open view of the scan line curvature correcting mechanim the length direction both ends of the mirror of turning back.
Fig. 3 A, 3B, 3C are that expression makes pressing component move at main scanning direction, make the synoptic diagram of the state of the mirror deflection of turning back.
Fig. 4 is the stereographic map of relation that is used to illustrate the bending direction of the moving direction of pressing component and sweep trace.
Fig. 5 is the figure apart from the relation of the amount of bow of d and sweep trace of the press points of expression from the supporting-point of mirror support unit to leaf spring.
Fig. 6 A, 6B, 6C are arranged on stereographic map, cut-open view and the vertical view of the scan line curvature correcting mechanim on the optical scanner of embodiments of the present invention two.
Fig. 7 A, 7B, 7C are arranged on stereographic map, cut-open view and the vertical view of the scan line curvature correcting mechanim on the optical scanner of embodiments of the present invention three.
Fig. 8 is the general profile chart that is loading the image processing system of optical scanner of the present invention.
Fig. 9 is the key diagram of other optical scanners that can load the scan line curvature correcting mechanim of embodiments of the present invention.
Figure 10 be expression research Fig. 5 apart from the concerning of d and amount of bow the time mirror of turning back that uses size and push the stereographic map of direction.
Figure 11 is the stereographic map of the optical scanner of embodiments of the present invention four.
Figure 12 A, 12B are arranged on the stereographic map and the cut-open view of the scan line curvature correcting mechanim on the optical scanner of embodiments of the present invention four.
Figure 13 A, 13B, 13C are the synoptic diagram of the case of bending of the mirror of expression when the mobile partition of pressing component is moved.
Figure 14 A, 14B are arranged on the stereographic map and the cut-open view of the scan line curvature correcting mechanim on the optical scanner of embodiments of the present invention five.
Figure 15 is arranged on the stereographic map and the cut-open view of the scan line curvature correcting mechanim on the optical scanner of embodiments of the present invention six.
Figure 16 is the stereographic map of the example at the expression both ends that the scan line curvature correcting mechanim of embodiments of the present invention are installed in f θ lens.
Embodiment
(first embodiment)
First embodiment of the present invention is described in conjunction with the accompanying drawings.In explanation, after the overall description of carrying out image processing system, the detailed formation of optical scanner is described.
(image processing system)
At first, image processing system is described.In the present embodiment, the coloured image with a plurality of image carriers (photoreceptor) being formed device describes.Fig. 8 is the diagrammatic illustration figure of image processing system.
The image processing system of present embodiment is the panchromatic printer with four image forming part tandem type ground configurations.Each image forming part has: photoreceptor; Make the charged charged device of photoreceptor; By with the corresponding laser of image information, the optical scanner that charged photoreceptor is scanned; By toner, the developer that the electrostatic latent image that forms on photoreceptor is developed; To look like to be transferred to transfer belt electrical equipment on the recording chart (or intermediate transfer body) at the toner that forms on the photoreceptor.Four illustrated here photoconductor drums are corresponding with the color of developing respectively.That is, the dark green C of being, yellow are Y, and magenta is M, and black is BK.Be described in detail below.
Periphery at photoconductor drum 12 (12C, 12Y, 12M, 12BK) is equipped with: make the similarly charged once charged device 103 (103C, 103Y, 103M, 103BK) of photoconductor drum 12; By with the corresponding laser of image information, the optical scanner 1 (1C, 1Y, 1M, 1BK) that charged photoreceptor is scanned; By supplying with the developer 104 (104C, 104Y, 104M, 104BK) that toner develops to electrostatic latent image; Carry out the transfer roll 105 (105C, 105Y, 105M, 105BK) of the transfer printing of toner picture with respect to transfer materials P such as paper; Remove the clearer 106 (106C, 106Y, 106M, 106BK) of the residue toner that does not carry out transfer printing.In addition, on the position that photoconductor drum 12 and transfer roll 105 are clipped, the belt 107 that transports that is used to transport transfer materials P is hanged up and is equipped on driven roller 124 grades.
In addition, the bottom transporting belt 107 has: the transfer dish 121 of transfer materials P such as stow maintenance paper; Be used for conveying roller 122 that transfer materials P is sent from transfer dish 121; One posture of facing transfer materials P is put in order, and one side is adjusted regularly, supplies with the register roller 123 of transfer materials P to transporting belt 107.In addition, in the carriage direction downstream of the transfer materials P that transports belt 107, setting the toner that will be transferred on the transfer materials P and looking like to carry out the fuser 125 of photographic fixing and the distributing roller 126 that transfer materials P is discharged outside device.
By this formation, image processing system is the formation image as following.At first, from optical scanner 1 to being in similarly photoconductor drum 12 illuminating laser beams (light) 3C, 3Y, 3M, the 3BK of electriferous state by charged device 103 once.Because this light is subjected to various optical modulations according to image information, so on each photoconductor drum 12, formed and the corresponding electrostatic latent image of each image information.
Above-mentioned electrostatic latent image is by supplying with dark green, yellow, magenta by developer 104, and the toner of black is thus by visual.
On the other hand, be transferred roller 122 many ground by the transfer materials P of stow on transfer dish 121 and carry successively,,, be transported to and transport on the belt 107 with writing out constantly synchronously of image by register roller 123.Be transported to accurately transport on the belt 107 during, be transferred to successively on the transfer materials P at the dark green image that forms on the face of photoconductor drum 12, yellow image, the image of magenta, the image of black, form coloured image.After this,, the remaining toner on the face of staying photoconductor drum 12 is cleaned by clearer 106, photoconductor drum in order to form next coloured image once more by once charged device 103 is similarly charged.
(optical scanner)
Then, describe optical scanner 1 in detail.Fig. 1 is the stereographic map of optical scanner.As Fig. 1 and shown in Figure 8, optical scanner 1 respectively disposes one with respect to a photoconductor drum 12 above photoconductor drum 12.
Constitute according to this, from the LASER Light Source unit 2 laser beam 3 that penetrate only by cylindrical lens 6 optically focused at sub scanning direction, be constrained to the beam diameter of regulation by optics aperture 4, by optically focused on the reflecting surface 8 of reflecting rotating multisurface mirror 7.Reflecting rotating multisurface mirror 7 will incide the laser beam 3 of reflecting surface 8 to main scanning direction deflection.The laser beam 3 that is deflected is after having passed through two scanning lenses 10, and mirror 11 reflections of being turned back are scanned exposure on photoconductor drum (being scanned face) 12, form electrostatic latent image on photoconductor drum 12.
The structure of mirror (optical element) 11 (supporting turn back)
Use Fig. 2 A and 2B, describe the structure that supports the mirror 11 of turning back in detail.Fig. 2 A and 2B illustrate that the mirror 11 of will turning back is installed to the figure of the state on the optical box 5.In Fig. 2 A and 2B, only illustrate the one-sided end of the length direction (main scanning direction) of the mirror 11 of turning back, the end of opposition side also is same shape.In addition, Fig. 2 A is near a stereographic map side the end of mirror 11 of turning back, Fig. 2 B be Fig. 2 A the Y direction to view.
Shown in Fig. 2 A and 2B, mirror 11 its cross section rectangular in shape of turning back have the reflecting surface 14 and the adjacent surface 16 thereof of reflection lasering beam 3.In Fig. 2 A, with the width of reflecting surface 14 as w, with the width of adjacent surface 16 as h.Here, be positioned on the base 15 near the mirror length direction both ends of the reflecting surface 14 of the mirror 11 of turning back, adjacent surface 16 is positioned on the base 17, thereby the mirror 11 of turning back is realized the location of its underpart., base 15 and base 17 are generically and collectively referred to as mirror support unit (support unit) 13 here, the mirror 11 of turning back is at two points of length direction, and (with reference to Fig. 3 A-3C) supported by two mirror support unit 13R, 13L in its underpart.In addition, base 15 and base 17 are the part (one-body molded with optical box 5) of optical box 5.
In addition, in optical box 5, the top of the mirror 11 of turning back with each mirror support unit 13R, position that 13L is relative, set two tabular elastomeric elements (leaf spring 18, leaf spring 21) respectively.In view of the above, the mirror 11 of turning back is pressed to mirror support unit 13 directions, and is supported.That is, two leaf springs 18, leaf springs 21 are worked in coordination with support unit 13R, 13L and are clipped the mirror 11 of turning back.Specifically, the press section 18a of the shape for lugs of leaf spring (pressing component) 18 pushes reflecting surface 14 back sides of the mirror 11 of turning back, and suppresses the mirror 11 of turning back to base 15 directions.In addition, the press section 21a of the shape for lugs of leaf spring 21 pushes the back side of the adjacent surface 16 of the mirror 11 of turning back, and suppresses the mirror 11 of turning back to base 17 directions.
(structure that the bending of sweep trace is proofreaied and correct)
Use Fig. 3 A～3C and Fig. 4, the structure (scan line curvature correcting mechanim) that the bending of sweep trace is proofreaied and correct is described.The state of the pressing position that Fig. 3 A～3C represents to make leaf spring 18 distortion under the situation that the length direction of the mirror 11 of turning back moves, that turn back mirror 11, Fig. 2 B is from the being seen synoptic diagram of arrow A direction.In addition, Fig. 4 is the turn back result, the figure how sweep trace that produces on photoconductor drum 12 changes of distortion of mirror 11 of explanation.
In the process of the image processing system of making present embodiment, because the skew of the position of the optical element of f θ lens or the mirror of turning back etc. or inclination etc. former thereby be created under the situation of photoconductor drum 12 upper tracer bendings, assembler is adjusted the position of leaf spring 18, makes the direction bending of mirror 11 to the bending of eliminating sweep trace of turning back.In view of the above, the bending of sweep trace obtains proofreading and correct.Below this bearing calibration is elaborated.
At first, describe from begin crooked structure with respect to optical box 5 parallel positions making the mirror 11 of turning back by Fig. 3 A～3C.As shown in Figure 3A, under the situation that the mirror 11 of will turning back keeps abreast with respect to optical box 5, with leaf spring 18 be fixed on about mirror support unit 13L, the position that 13R is relative.That is, at the length direction of mirror 11 of turning back, about leaf spring 18 press section 18a (force, press points) the position with about mirror support unit 13L, the position of 13R (fulcrum) overlap.So, the pressing force of leaf spring 18 does not act on the direction that makes mirror 11 bendings of turning back, and spring 18 and mirror support unit 13 do not make the mirror 11 of turning back agley it be kept.
Shown in Fig. 3 B, make under the mirror 11 of the turning back situation crooked with respect to optical box 5 convexs ground, with leaf spring 18 be fixed on about mirror support unit 13L, the outside of position that 13R is relative.That is, at the length direction of mirror 11 of turning back, about the outside of position of the position of press section 18a (force) of leaf spring 18 mirror support unit 13L, the 13R (fulcrum) about being in.So, mirror support unit 13L, 13R push the lower inside of the direction of scanning of the mirror 11 of turning back at two positions, and leaf spring 18 pushes the outer upper of the direction of scanning of the mirror 11 of turning back.Thus, the masterpiece of leaf spring 18 is used for mirror 11, so that the mirror 11 of turning back is turned with respect to optical box 5 convex form ground, the mirror 11 of turning back is crooked with respect to optical box 5 convexs ground.In addition, though need become flexible the end of screw S when leaf spring 18 is slided, the position of this screw S is always certain at the length direction of mirror 11.In addition, by adjust between fulcrum and force (press points) apart from d, can adjust the degree of crook of mirror 11.
Shown in Fig. 3 C, make under the mirror 11 of the turning back situation crooked with respect to optical box 5 concavity ground, with leaf spring 18 be fixed on about mirror support unit 13L, the inboard of position that 13R is relative.That is, at the length direction of mirror 11, about the inboard of position of the position of press section 18a (force) of leaf spring 18 mirror support unit 13L, the 13R (fulcrum) about being in.So, mirror support unit 13L, 13R push the outer lower portion of the direction of scanning of the mirror 11 of turning back at two positions, and leaf spring 18 pushes the inside upper part of the direction of scanning of the mirror 11 of turning back.In view of the above, the masterpiece of leaf spring 18 is used for mirror 11, so that the mirror 11 of turning back is turned with respect to optical box 5 concave shape ground, the mirror 11 of turning back is crooked with respect to optical box 5 concavity ground.In this case, also can by adjust between fulcrum and force (press points) apart from d, adjust the degree of crook of mirror 11.
If mirror 11 bendings of turning back, mirror 11 reflections and be formed on scanning line bending on the photoconductor drum 12 of then being turned back.Fig. 4 is illustrated in the direction of photoconductor drum 12 upper tracer bendings.Sweep trace 22 (a) on the photoconductor drum 12 shown in Figure 4,22 (b), 22 (c) sweep trace of mirror 11 when the direction of Fig. 3 A, 3B, 3C is crooked of representing respectively to turn back.Like this, crooked corresponding with the mirror 11 of turning back, also crooked by the sweep trace 22 that forms by the mirror 11 laser light reflected bundles 3 of turning back.
But, though under the situation of the image processing system of tandem type, need a plurality of optical scanners corresponding with a plurality of image forming parts, but also can consider in the stage of implementing before scanning line bending is proofreaied and correct, for example the sweep trace based on the laser that penetrates from first optical scanner becomes concave shape, becomes the situation of convex form based on the sweep trace of the laser that penetrates from second optical scanner.That is, also can consider based on the bending direction of the sweep trace of the laser that penetrates from first optical scanner with based on the different situation of bending direction from the sweep trace of the laser of second optical scanner ejaculation.
Like this, merging to by case of bending a plurality of sweep traces that bending direction is different of adjusting optical element under the nemaline situation of scanning, it is different that direction is adjusted in the bending adjustment direction of the optical element that first optical scanner is loaded and the bending of the optical element that second optical scanner is loaded.Therefore, adjust member as the bending of catoptron, preferably adjust the big structure of degree of freedom, so that can corresponding following any situation, that is any one situation in situation that the sweep trace of concave shape is revised and the situation that the sweep trace of convex form is revised.
As mentioned above, the optical scanner of being put down in writing in TOHKEMY 2001-117040 number is provided with pressing quantity and adjusts screw at the length direction both ends of mirror, by rotating this screw, adjusts the degree of crook of mirror.
But, though can adjust the amount of spin of screw, because the bending direction of adjustable mirror is a direction (becomes the direction of concave or become any one direction in the direction of convex shape), so the degree of freedom that the bending of sweep trace is adjusted is little.
In addition, the optical scanner of being put down in writing in TOHKEMY 2000-180778 number is provided with pressing quantity adjustment screw at the length direction central portion of mirror, by rotating this screw, adjusts the degree of crook of mirror.
But, also be the amount of spin of energy set screw in this case, and the bending direction of adjustable mirror is a direction, so the degree of freedom that the bending of sweep trace is adjusted is little.
In addition, though considered to adjust screw on the length direction central portion of mirror and this two side of both ends by pressing quantity is set, just can and become adjustment on this both direction of direction of convex shape in the direction that becomes concave, but, in this case, increase because push the number that is provided with of adjusting member, so increased cost.
Relative therewith, under the situation of the optical scanner of present embodiment, not only can adjust between the force (press points) of the fulcrum of support unit 15 and pressing component 18 apart from d, adjust the degree of crook of sweep trace, and, the position of the press points of pressing component 18 is at the mirror length direction, can surpass support unit 15 fulcrum the position and move.Constitute according to this, under the situation that the sweep trace of concave shape is proofreaied and correct, and under the situation that the sweep trace of convex form is proofreaied and correct, can both be corresponding, have and can make the very large advantage of degree of freedom of curvature correction with simple formation.
Below, illustrate the method for using above-mentioned scan line curvature correcting mechanim that the bending of the sweep trace on the photoconductor drum 12 22 is proofreaied and correct.Because the position deviation of the optical element of f θ lens etc. or inclination etc., under the situation of the bending that produces sweep trace 22 on the photoconductor drum 12, if make the mirror 11 of turning back to the direction bending of the bending of offsetting this sweep trace 22, then just can proofread and correct to the bending of sweep trace 22.
For example, about leaf spring 18 press section 18a (force) the position with about the state of location overlap of mirror support unit 13L, 13R (fulcrum) under, when the sweep trace on the photoconductor drum 12 22 is crooked like that shown in 22 (c) of Fig. 4, shown in Fig. 3 B, as long as by the outside of leaf spring 18 by the mirror support unit 13 about press fit.So, because the strain that produces on the mirror of turning back, sweep trace is to the direction bending of 22 (b) of Fig. 4.Thus, mutual scanning line bending is cancelled, and can proofread and correct the bending of sweep trace 22.Otherwise, about leaf spring 18 press section 18a (force) the position with about the state of location overlap of mirror support unit 13L, 13R (fulcrum) under, when 22 (b) of the bending direction of sweep trace 22 such as Fig. 4, shown in Fig. 3 C, as long as by the inboard of leaf spring 18 by the mirror support unit 13 about press fit.
In addition, the adjustment amount of scanning line bending depend on press points (force) from the supporting-point (fulcrum) of mirror support unit 13 to leaf spring 18 apart from d.Therefore, the position of the press points of the leaf spring 18 by adjusting each optical scanner 1 (1C, 1Y, 1M, 1K), so that it is inaccurate can not produce the chromatography that causes because of four image forming parts, just can proofread and correct the deviation of the sweep trace between four image forming parts.
Like this, the scan line curvature correcting mechanim of present embodiment can adjust mirror length direction between the press points (force) of the supporting-point (fulcrum) of support unit and pressing component apart from d.In addition, the position of support unit is fixed, and the position of press points can be adjusted at the mirror length direction.Have again, move at the mirror length direction, can adjust the position of press points by making pressing component.Have again, the position of the press points of pressing component can the mirror length direction surpass support unit fulcrum the position and move.
By Fig. 5 explanation relation from the supporting-point of mirror support unit 13 to the amount of bow apart from d (mm) and sweep trace 22 (μ m) of the press points of leaf spring 18.Fig. 5 is the distance L=170mm that is illustrated between mirror support unit 13L and the 13R, the thickness h=5mm of the mirror 11 of turning back, and under the condition of the width w=10mm of the mirror 11 of turning back, the experimental result of the scanning line bending amount the when pressing position of leaf spring 18 is changed.In Figure 10, represent to turn back the size of mirror 11 and the graph of a relation of pushing direction of leaf spring 18.
The symbol of the transverse axis of Fig. 5 is consistent with (+) (-) symbol of Fig. 3 A～3C.In addition, the symbol of the longitudinal axis is consistent with (+) (-) symbol of Fig. 4.As can be seen from Figure 5, under the press load of leaf spring 18 is certain situation, be proportionate relationship apart from the amount of bow of d and sweep trace 22.
According to present embodiment, be the structure that the leaf spring 18 that originally only sets in order to keep turning back mirror 11 is moved at the length direction of the mirror 11 of turning back.Therefore, the mechanism of other that do not need to be used for scanning line bending is proofreaied and correct.Therefore, because can cut down number of spare parts, so can cut down the assembly cost of cost of parts and this part.In addition, because in this structure, leaf spring 18 can be pushed the inboard or the outside of the position relative with mirror support unit 13, promptly, the position of the press points of pressing component can be on the mirror length direction surpass support unit fulcrum the position and move, so increased the degree of freedom of the curvature correction of sweep trace, no matter the preceding sweep trace of curvature correction is shaped as concave shape or convex form, can both be corresponding.
In addition, constitute the part of the insertion screw S of leaf spring 18 by slotted hole 19.According to this structure, because when carrying out curvature correction, needn't pull down screw S, as long as loosening leaf spring is moved it, so can easily adjust operation.
Particularly form in the device at the in-line coloured image that has used a plurality of optical scanners, overlap in order to make the toner picture that forms on a plurality of photoconductor drums, the deviation that preferably is formed between the electrostatic latent image on each photoconductor drum is little.According to present embodiment,, can make crooked convex-concave direction unanimity, so the deviation of electrostatic latent image is little because scanning line bending of all kinds can be suppressed less.Therefore, scanning line bending reduces, and can provide chromatography to be forbidden minimum image at an easy rate.
(second embodiment)
By Fig. 6 A～6C second embodiment of the present invention is described.The leaf spring of present embodiment (pressing component) 31 is same with the leaf spring of above-mentioned embodiment, be used for about the relative stationkeeping of mirror support unit 13 mirror 11 of turning back.In addition, leaf spring 31 can move at the length direction (main scanning direction) of the mirror 11 of turning back, and leaf spring 31 is moved, and makes mirror 11 bendings of turning back, and the bending of sweep trace 22 is proofreaied and correct.Describe the leaf spring 31 that supports the mirror 11 of turning back in detail.To formation same as described above, mark identical symbol, and omit explanation.
(structure that the mirror 11 of turning back is supported)
Use Fig. 6 A～6C, describe the structure that the mirror 11 of turning back is supported in detail.Fig. 6 A～6C illustrates that the mirror 11 of will turning back has been installed to the figure of the state on the optical box (framework) 42.In Fig. 6 A～6C, only illustrate the one-sided end of the length direction (main scanning direction) of the mirror 11 of turning back, the end of opposition side also is same shape.In addition, Fig. 6 A is near a stereographic map side the end of mirror 11 of turning back, Fig. 6 B be Fig. 6 A the Y direction to view, Fig. 6 C be Fig. 6 A the Z direction to view.
The leaf spring of present embodiment (pressing component) 31 be in the turn back mode on top of mirror 11 of covering, the shape of a sheet metal and the mirror 11 of turning back folded with matching process.Leaf spring 13 have be used to push turn back mirror 11 tabular elastic 32 and elastic 33, surround the frame section 34 of these elastic etc.
On elastic 32, form the press section (press points (force)) 39 of shape for lugs, to turn back the direction towards base (support unit) 15 relative with reflecting surface 14 of mirror 11 of this press section 39 pushed, form the press section 40 of shape for lugs on elastic 33, will turn back the direction towards base 17 relative with adjacent surface 16 of mirror 11 of this press section 40 pushed.That is, leaf spring 31 is pushed different a plurality of of mirror 11.In addition, press section 39 and press section 40 are arranged on the same straight line with the direction of the main scanning direction quadrature of laser beam 3.By these press sections 39,40, the mirror 11 of turning back is pressed and is fixed on the optical box 42.
In addition, leaf spring 31 is the boundary with the mirror 11 of turning back, and has return portion 37 in an example opposite with screw S.Return portion 37 supports the root side of the elastic 32 of leaf spring 31 by by the side that is pressed in the groove 41 that forms on the optical box 42.In addition, near the elastic 32 of return portion 37 (be in the present embodiment elastic 32 root under) be provided with slotted hole 44, pawl 43 fastenings that are formed at optical box 42 sides are in this slotted hole 44.Thus, leaf spring 31 fastenings can be made it not move at above-below direction, and, if loosening screw S then can make leaf spring 31 move slidably at the length direction of the mirror 11 of turning back.That is, leaf spring 31 with the mode of the part of the common length direction that coats the mirror 11 of turning back of support unit 13, be fixed at two different points (position of screw S and pawl 43 positions) of the direction of intersecting with the mirror length direction.
According to above structure, leaf spring 31 is moved at the length direction of the mirror 11 of turning back.In addition, because the leaf spring of present embodiment 31 is also identical with embodiment one, be to push and the inboard of mirror support unit 13 relative positions or the structure in the outside, promptly, the position of the press points 39 of pressing component 31 can be on the mirror length direction surpass support unit 13 fulcrum the position and move, so increased the degree of freedom of the curvature correction of sweep trace, no matter the preceding sweep trace of curvature correction is shaped as concave shape or convex form, can both be corresponding.In addition, because carry out to move at the mirror length direction, so the mechanism of other that do not need to be used for scanning line bending is proofreaied and correct by the turn back leaf spring 31 of action of mirror 11 of press fit.Have again, in the present embodiment,,, can further cut down number of spare parts on leaf spring 31 so compare with first embodiment because two elastic 32,33 are set.
In addition, leaf spring 31 is by slotted hole 44 and pawl 33 fastenings are fixed on the optical box 42.Therefore, even under the state that has become flexible screw S, there is not the situation about being decontroled of pushing of press section 39 yet.Therefore, loosening screw S can simultaneously make leaf spring 31 move, and one side is observed the variation of scanning line bending.That is, push at leaf spring (pressing component) 31 under the state of the mirror 11 of turning back, can adjust the position of press points 39.In addition, even after adjustment, tighten screw S, leaf spring 31 is fixing, and the adjusted value of scanning line bending is not change substantially also.Therefore, can be easily and precision carry out 31 pairs of leaf springs turn back the fixing of mirror 11 and these both sides of adjustment that sweep trace is proofreaied and correct well.
(the 3rd embodiment)
Use Fig. 7 A～7C, the 3rd embodiment of the present invention is described.The leaf spring of present embodiment (pressing component) 51 is identical with above-mentioned embodiment, be used for about the relative stationkeeping of mirror support unit 13 mirror 11 of turning back.In addition, leaf spring 51 can move at the length direction (main scanning direction) of the mirror 11 of turning back, and leaf spring 51 is moved, and makes mirror 11 bendings of turning back, and the bending of sweep trace 22 is proofreaied and correct.Describe the leaf spring 51 that supports the mirror 11 of turning back in detail.The identical symbol of formation mark to same as described above omits explanation.
(structure that the mirror 11 of turning back is supported)
Use Fig. 7 A～7C, describe the structure that the mirror 11 of turning back is supported in detail.Fig. 7 A～7C illustrates that the mirror 11 of will turning back has been installed to the figure of the state on the optical box (framework) 62.In Fig. 7 A～7C, only illustrate the one-sided end of the length direction (main scanning direction) of the mirror 11 of turning back, the end of opposition side also is same shape.In addition, Fig. 7 A is near a stereographic map side the end of mirror 11 of turning back, Fig. 7 B be Fig. 7 A the Y direction to view, Fig. 7 C be Fig. 7 A the Z direction to view.
The leaf spring of present embodiment (pressing component) 51 is same with embodiment two, is in the turn back mode on top of mirror 11 of covering, the shape of a sheet metal and the mirror 11 of turning back is folded with matching process.Leaf spring 51 have be used to push turn back mirror 11 tabular elastic 32 and elastic 33, surround the frame section 54 of these elastic etc.In addition, the leaf spring 51 of present embodiment is also identical with embodiment one, be to push and the inboard of mirror support unit 13 relative positions or the formation in the outside, promptly, the position of the press points 39 of pressing component 51 is at the mirror length direction, can surpass support unit 13 fulcrum the position and move, so increased the degree of freedom of the curvature correction of sweep trace, no matter the preceding sweep trace of curvature correction is shaped as concave shape or convex form, can both be corresponding.
On the leaf spring 51 of present embodiment, be provided with hook (fastening portion) 65 in the bottom of elastic 32.Hook 65 is the parts of cutting away frame section 54, and forms to turning back mirror 11 direction warpages.In addition, on optical box 62, form the groove of fixing across return portion 37 41.Have again, on optical box 62, in the side of groove 41, the position relative, have the fastening parts 66 that are used for hook 65 fastenings with hook 65.Present embodiment is also identical with embodiment two, leaf spring 51 with the mode of the part of the common length direction that coats mirrors 11 of support unit 13, be fixed at different two points (position of the position of screw S and hook 65) of the direction of intersecting with the mirror length direction.
Therefore, on the device framework, between optical box 62 and fastening parts 66, form the fastening groove 67 that hook 65 enters.Fastening groove 67 is formed to be compared at main scanning direction longly with hook 65, and its length is the length that leaf spring 51 can move at least.Therefore, even under the situation that the length direction that makes leaf spring 51 turn back mirror 11 moves, hook 65 also enters fastening groove 67 effectively, by fastening on fastening parts 66.In addition, press section 39, press section 40 and hook 65 are arranged on the same straight line with the direction of the main scanning direction quadrature of laser beam 3.
Like this, press section 39 sides of leaf spring 51 are fixed on the optical box 62 by to the pushing and the fastening of hook 65 and fastening parts 66 of the side of the groove 41 of return portion 37.In addition, press section 40 sides of leaf spring 51 are fixed on the optical box 62 by insert trip bolt S in slotted hole 35.By above formation, leaf spring 51 is moved along the length direction of slotted hole 35,44 at the mirror 11 of turning back.
In addition, in the present embodiment, forming on the leaf spring 51 hook 65 of leaf spring 51 fastenings on optical box 62, hook 65 be arranged on press section 39,40 same straight lines on.In addition, the front end of hook 65 always contacts with fastening parts 66.Therefore, make leaf spring 51 when the Y direction moves, be difficult to produce rotation around X-axis (the arrow R direction of Fig. 7 A).Therefore, carry out timing, can suppress the load variations of elastic 32,33 in bending to sweep trace 22.Its result is that the optical scanner that carries out the curvature correction of sweep trace 22 easily can be provided.
In addition, in above-mentioned embodiment one to three, will pressing position when the curvature correction of sweep trace 22, from mirror support unit 13 to leaf spring apart from d, the distance identical as the left and right sides is illustrated, but is not to be limited to this.That is, apart from d also can be about different length.
In addition, the length of the mirror 11 of turning back has been represented the length of the L=170mm shown in the test findings of embodiment for example, can set appropriate length according to the size of device.
In addition, the shape of leaf spring is not subjected to the restriction of above-mentioned embodiment, can be Any shape.In addition, also no problem to the fixed component beyond the above-mentioned leaf spring of fixedly use of the mirror 11 of turning back, as long as can carry out slip at the length direction of the mirror 11 of turning back.In addition, though the material of mirror can be used glass sheet, be not to be restricted to this.In addition, reflecting surface 14 also is not limited to the reflecting surface on plane, can be crooked mirror.
In addition, in above-mentioned embodiment one to three, sweep trace 22 is to be directed on the photoconductor drum 12 from an optical scanner 1, but is not to be restricted to this.It for example also can be following formation, promptly, as shown in Figure 9, on an optical scanner 201, load a plurality of (though be two among Fig. 9, but also can be four) light source 202a, 202b, from a plurality of laser beam 203as, the 203b of an optical scanner 201 ejaculations towards a plurality of photoconductor drums.If such formation then in above-mentioned embodiment one to three, though need four optical scanners, also can constitute by two optical scanners, cut down number of spare parts.In addition, if the bending of the some sweep traces of contrast, the scanning line bending of proofreading and correct other then can be eliminated the relative mistake of scanning line bending.In view of the above, at least one sweep trace can be adjusted.
In addition, if key diagram 9, then the laser beam 203a that is penetrated, 203b utilize the different face of reflecting rotating multisurface mirror 207, be directed to both direction respectively, after having seen through a plurality of scanning lens 210a, 210b, by a plurality of mirror 211a, 211b reflections of turning back, be directed to a plurality of different photoconductor drums 12.
Above-mentioned embodiment one to three is that the leaf spring of pushing mirror is slided at mirror length direction (main scanning direction), bending to sweep trace is proofreaied and correct, but embodiment shown below is the position of leaf spring to slide at the length direction of mirror by making the mobile partition that is installed on the leaf spring at stationary state, comes the bending of sweep trace is proofreaied and correct.
(embodiment four)
Figure 11 is the stereographic map of the optical scanner of embodiment four, and Figure 12 A is arranged on the stereographic map of the scan line curvature correcting mechanim 100R a side the end of the mirror 11 of turning back near, and Figure 12 B is the cut-open view during from Y direction 12A with the aid of pictures.In addition, mark identical number to having with the parts of above-mentioned embodiment identical functions, the repetitive description thereof will be omitted.In addition, the structure of scan line curvature correcting mechanim 100L is identical with 100R.
The optical scanner of present embodiment is also identical with embodiment one to three, near the both ends of the mirror 11 of turning back scan line curvature correcting mechanim 100R, 100L is set.The mirror 11 of turning back is the mode of length direction with the main scanning direction that laser beam 3 scans, and is configured in the optical box 5.Near the bottom length direction both ends of mirror 11 (reflecting surface 14 and the face 16 adjacent with reflecting surface 14) of turning back is positioned on the mirror support unit 13 (base 15,17) as the part of resin system optical box 5.On the other hand, near the top (with the face of reflecting surface 14 opposition sides) of turning back the length direction both ends of mirror 11 is pushed by leaf spring (pressing component 180).This leaf spring 180 has by screw 185 and is installed in the fixed part 180A on the optical box 5 and applies the 180B of spring portion of the power of pushing mirror.The mobile partition (partition portion) 190 that can slide at the mirror length direction is installed on the 180B of spring portion, and this moves partition 190 and contact formation press points (force) with the face of reflecting surface 14 opposition sides of mirror.On the other hand, base 15 becomes fulcrum.In addition, mobile partition 190 clips the mode of the 180B of spring portion with the two sides from the 180B of spring portion, is installed on the 180B of spring portion.Spring 180 is metallic, but mobile partition 190 is resin systems.
Figure 13 A～13C is the figure that expression makes pressing position (press points) the distortion appearance when the length direction of the mirror 11 of turning back moves, that turn back mirror 11 of mobile partition 190.Figure 13 A, Figure 13 B, Figure 13 C are near the synoptic diagram in length direction both ends of seeing mirror from arrow A direction (Figure 12 B).
In Figure 13 A, two mobile partitions 190 by be pressed in the mirror length direction about mirror support (fulcrum) 13L, 13R position overlapped.Therefore, there is not the suffered load of the mirror 11 of turning back substantially, keeping the roughly state of nature.In Figure 13 B, mobile partition 190 push with about mirror support 13L, the outside that 13R compares.Therefore, deflection with turning back mirror 11 convexs.In Figure 13 C, mobile partition 190 push with about mirror support 13L, the inboard that 13R compares.Therefore, the mirror 11 concavity ground deflections of turning back.
Like this, the scan line curvature correcting mechanim 100 of present embodiment is also identical with embodiment one to three, can adjust mirror length direction between the press points (force) 190 of the supporting-point (fulcrum) of support unit 13 and pressing component 180 apart from d.In addition, the position of support unit 13 is fixed, and the position of press points 190 can be adjusted at the mirror length direction.Have again, move at the mirror length direction, can adjust the position of press points by the partition 190 that makes pressing component.Have, the position of the press points of pressing component can be at the mirror length direction again, surmount support unit fulcrum the position and move.Therefore, increased the degree of freedom of the curvature correction of sweep trace, no matter the preceding sweep trace of curvature correction is shaped as concave shape or convex form, can both be corresponding.
Have again, in the present embodiment, carry out timing in bending to sweep trace, can guarantee simultaneously that state that leaf spring 180 pushing the mirror 11 of turning back (promptly, not loosening screw 185), one side makes mobile partition 190 move at the length direction of the mirror 11 of turning back by manually.Therefore, can easily proofread and correct the bending of sweep trace.In addition, behind the position of having adjusted mobile partition 190, mobile partition by with the friction force of the mirror 11 of turning back, keep adjusted position.
Particularly form in the device at the in-line coloured image that has used a plurality of optical scanners, importantly the degree with scanning line bending of all kinds suppresses lessly, and makes crooked convex-concave direction unanimity.If use the optical scanner of present embodiment, then the degree of crook of sweep trace is little, and it is inaccurate to suppress chromatography.
In addition,, mobile partition can not moved, also can mobile partition be fixed on the leaf spring by bonding agent etc. for after the bending of sweep trace is proofreaied and correct.
(the 5th embodiment)
Figure 14 A and 14B are arranged on the cut-open view of the scan line curvature correcting mechanim on the optical scanner of the 5th embodiment.Figure 14 A and 14B represent near length direction one end of mirror also have and Figure 14 A and the identical scan line curvature correcting mechanim of 14B near the other end, omit explanation.The scan line curvature correcting mechanim of present embodiment also is that the position (position of partition) of the press points of its pressing component can be at the mirror length direction, surmount mirror support unit (base) fulcrum the position and move, because this point is identical with embodiment one to four, so omit explanation.
Identical with embodiment four, the mirror 11 of turning back is at first by on mirror support 13R, the 13L about being positioned in.Then, the mirror 11 of turning back is pressed and is fixed from the top by leaf spring 280 and mobile partition 290.Identical with above-mentioned embodiment, leaf spring 280 is fixed on the optical box by screw 185, and mobile partition 290 can move at the length direction of the mirror 11 of turning back.By mobile partition 290 is moved, carry out the curvature correction of sweep trace.
Use Figure 14 A, 14B, the structure of the scan line curvature correcting mechanim of present embodiment is described.Near the top (with the face of reflecting surface opposition side) of turning back the length direction both ends of mirror 11 is pushed by leaf spring (pressing component) 280.This leaf spring 280 has by screw 185 and is installed in the fixed part 280A on the optical box and applies the 280B of spring portion of the power of pushing mirror.The mobile partition (partition portion) 290 that can slide at the mirror length direction is installed on the 280B of spring portion, and this moves partition 290 and contact formation press points (force) with the face of the reflecting surface opposition side of mirror.Mobile partition 290 clips the mode of the 280B of spring portion with the two sides from the 280B of spring portion, is installed on the 280B of spring portion.
In addition, on the leaf spring 280 of present embodiment,, form groove (guide portion) 280C to mobile partition 290 channeling conducts along the length direction of the mirror 11 of turning back.Be installed in movably on this leaf spring 280 mobile partition 290 except with press section 290A that the mirror 11 of turning back contacts, also have the protuberance 290B among the groove 280C that is embedded into leaf spring, and be used for the handle 290C that when mobile partition 290, catches with finger.The width of the protuberance 290B of mobile partition 290 (length of the direction of intersecting with moving direction) is slightly narrower than the width of the groove 280C of leaf spring.
Like this, the mobile partition 290 of present embodiment is because have handle 290C, so be very easy to move.In addition, because be the formation that the protuberance 290B of mobile partition 290 slides in the groove 280C of leaf spring 280,, scanning line bending proofreaied and correct be more prone to so mobile partition 290 is moved swimmingly.
(the 6th embodiment)
Figure 15 is arranged on the stereographic map of the scan line curvature correcting mechanim on the optical scanner of the 6th embodiment.Figure 15 represents near length direction one end of mirror the scan line curvature correcting mechanim identical with Figure 15 arranged also near the other end, omits explanation.The scan line curvature correcting mechanim of present embodiment also is that the position (position of partition) of the press points of its pressing component can be at the mirror length direction, surmount mirror support unit (base) fulcrum the position and move, because also identical, so omit explanation with embodiment one to five about this point.
Identical with embodiment four, the mirror 11 of turning back is at first by on mirror support 13R, the 13L about being positioned in.Then, the mirror 11 of turning back is pressed and is fixed from the top by leaf spring 380 and mobile partition 390.Identical with above-mentioned embodiment, leaf spring 380 is fixed on the optical box by screw (not shown go out), and mobile partition 390 can move at the length direction of the mirror 11 of turning back.By mobile partition 390 is moved, carry out the curvature correction of sweep trace.
As shown in figure 15, the leaf spring 380 of present embodiment has by screw (not shown go out) and is installed in the fixed part 380A on the optical box and applies the 380B of spring portion of the power of pushing mirror.The mobile partition (partition portion) 390 that can slide at the mirror length direction is installed on the 380B of spring portion, and this moves partition 390 and contact formation press points (force) with the face of the reflecting surface opposition side of mirror.Mobile partition 390 clips the mode of the 380B of spring portion with the two sides from the 380B of spring portion, is installed on the 380B of spring portion.
In addition, on the leaf spring 380 of present embodiment, also be length direction along the mirror 11 of turning back, form groove 380C to mobile partition 390 channeling conducts.Be installed in movably on this leaf spring 380 mobile partition 390 except with press section that mirror 11 contacts, also have two protuberance 390B among the groove 380C that is embedded into leaf spring, and be arranged at two elastic 390C between the protuberance 390B.Mobile partition 390 is a resin system, and elastic 390C has flexible with respect to mobile partition 390 main bodys, have claw 390D at front end.The width of the protuberance 390B of mobile partition 390 (length of the direction of intersecting with moving direction) is slightly narrower than the width of the groove 380C of leaf spring.
In addition, in the bottom surface of the slot part 380C of leaf spring 380, the tooth-strip part 380D of the claw 390D institute fastening of mobile partition 390 is being set.This tooth-strip part 380D is at the length direction of mirror 11 of turning back, and the roughly whole zone that spreads all over leaf spring 380 is set up.
If mobile partition 390 is moved at the mirror length direction, the then concaveconvex shape of elastic 390C and the tooth-strip part 380D ground deflection that matches, it is simultaneously mobile that claw 390D simultaneously steps up the top of tooth-strip part 380D.If make mobile partition 390 move to desirable position, then claw 390D stops at the recess of tooth-strip part 380D, and the position of mobile partition 390 is determined.That is, the pressing component of present embodiment has the mobile mobile limiting mechanism of restriction mobile partition (partition portion).
Like this, because be provided with the mobile mobile limiting mechanism of restriction mobile partition (partition portion), so even applied a little impact, mobile partition 390 is also kept adjusted position easily.Therefore, there is no need after scanning line bending is proofreaied and correct, carry out to save the man-hour of assembling by bonding agent etc., disposal that mobile partition 390 is fixing.
In above-mentioned embodiment one to six, be the degree of crook of adjusting mirror, the bending of sweep trace is proofreaied and correct, still, the optical element that becomes the object of adjustment also can be f θ lens.To be expression be arranged near the figure of the example the length direction both ends of f θ lens 10 with scan line curvature correcting mechanim to Figure 16.Scan line curvature correcting mechanim shown in Figure 16 is identical with embodiment one to three, be the type of adjusting the position of leaf spring (pressing component) 480 at main scanning direction (direction of arrow), can adjust the distance of the length of lens direction (main scanning direction) between the press points of the fulcrum of support unit 130R (130L) and leaf spring 480.The scan line curvature correcting mechanim of the type that alternative leaf spring 480 moves also can be as embodiment four to six, uses the scan line curvature correcting mechanim of mobile partition type.
The present invention is not limited to above-mentioned example, is also contained in the distortion in the technological thought.
The application advocates Japan's patented claim 2004-221598 number of proposing on July 29th, 2004 and the right of priority of Japan's patented claim of proposing on July 22nd, 2005 2005-213310 number, has quoted this content, as the application's a part.
Claims (11)
1. optical scanner has:
Deflector, the laser deflection that described deflector will penetrate from light source is to be scanned scan laser on the face;
Optical element, described optical element will be by this laser aiming of above-mentioned deflector to being scanned face;
Support near the support unit in length direction end of above-mentioned optical element; And
Collaborative with above-mentioned support unit, with above-mentioned optical element by the pressing component that is pressed on the above-mentioned support unit;
Wherein, the fulcrum of above-mentioned support unit is fixed, and the press points of above-mentioned pressing component can be adjusted on this length direction, it is characterized in that,
Above-mentioned optical scanner has adjusting mechanism, above-mentioned adjusting mechanism is used for making above-mentioned pressing component under above-mentioned pressing component is pushed the state of above-mentioned optical element this press points slides along this length direction of above-mentioned optical element, slidably adjusts the distance on this length direction between this press points of this fulcrum of above-mentioned support unit and above-mentioned pressing component thus.
2. optical scanner as claimed in claim 1 is characterized in that,
The moving area of this press points of above-mentioned pressing component is crossed over the place side both sides of the end on this length direction of the place side of the central portion on this length direction of above-mentioned optical element and above-mentioned optical element with respect to this fulcrum of above-mentioned support unit.
3. optical scanner as claimed in claim 1 or 2 is characterized in that,
Above-mentioned adjusting mechanism has slotted hole that is arranged on the above-mentioned pressing component and the screw of fixing above-mentioned pressing component.
4. optical scanner as claimed in claim 1 or 2 is characterized in that,
Above-mentioned pressing component has the spring portion that applies the power of pushing above-mentioned optical element and slidably is installed on above-mentioned spring portion and the partition portion of the above-mentioned adjusting mechanism of conduct that contacts with above-mentioned optical element, by above-mentioned partition portion is moved at this length direction, this press points of above-mentioned pressing component can slide.
5. optical scanner as claimed in claim 4 is characterized in that,
Above-mentioned pressing component also has the guide portion to the mobile channeling conduct of above-mentioned partition portion.
6. optical scanner as claimed in claim 4 is characterized in that,
Above-mentioned pressing component has the mobile limiting mechanism that the above-mentioned partition of restriction portion moves.
7. optical scanner as claimed in claim 1 is characterized in that,
Above-mentioned pressing component is pushed a plurality of of above-mentioned optical element.
8. optical scanner as claimed in claim 7 is characterized in that,
Above-mentioned pressing component with direction that this length direction intersects on different 2 locate to be fixed, thereby collaborative with above-mentioned support unit, the part of the length direction of above-mentioned optical element is coated.
9. optical scanner as claimed in claim 1 is characterized in that,
Above-mentioned optical scanner also has the optical box of accommodating above-mentioned deflector and above-mentioned optical element and above-mentioned support unit, above-mentioned pressing component and above-mentioned adjusting mechanism, and above-mentioned support unit is the part of above-mentioned optical box.
10. optical scanner as claimed in claim 1 is characterized in that,
Above-mentioned optical element is the catoptron of this laser of reflection.
11. optical scanner as claimed in claim 1 is characterized in that,
Above-mentioned optical element is the lens that this laser sees through.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004221598 | 2004-07-29 | ||
| JP221598/2004 | 2004-07-29 | ||
| JP213310/2005 | 2005-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1989438A CN1989438A (en) | 2007-06-27 |
| CN100454082C true CN100454082C (en) | 2009-01-21 |
Family
ID=38185451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800252340A Active CN100454082C (en) | 2004-07-29 | 2005-07-29 | Optical scanning device having scan line curvature correcting mechanim |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100454082C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5543829A (en) * | 1994-10-19 | 1996-08-06 | Xerox Corporation | Method and apparatus for adjusting the curvature of a folding mirror in a raster scanning system |
| JP2000131636A (en) * | 1998-10-21 | 2000-05-12 | Canon Inc | Scanning optical device |
| US6219082B1 (en) * | 1999-12-09 | 2001-04-17 | Xerox Corporation | Printer raster output scanning system with differential screw micron level bow correction |
| JP2001215434A (en) * | 2000-02-01 | 2001-08-10 | Fuji Xerox Co Ltd | Optical scanner |
| JP2001228427A (en) * | 2000-02-16 | 2001-08-24 | Fuji Xerox Co Ltd | Optical scanner and image forming device |
| JP2002182145A (en) * | 2000-12-15 | 2002-06-26 | Ricoh Co Ltd | Optical scanner and image forming device with the optical scanner mounted thereon |
| JP2003270573A (en) * | 2002-03-18 | 2003-09-25 | Fuji Xerox Co Ltd | Optical scanner and image forming apparatus provided with it |
-
2005
- 2005-07-29 CN CNB2005800252340A patent/CN100454082C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5543829A (en) * | 1994-10-19 | 1996-08-06 | Xerox Corporation | Method and apparatus for adjusting the curvature of a folding mirror in a raster scanning system |
| JP2000131636A (en) * | 1998-10-21 | 2000-05-12 | Canon Inc | Scanning optical device |
| US6219082B1 (en) * | 1999-12-09 | 2001-04-17 | Xerox Corporation | Printer raster output scanning system with differential screw micron level bow correction |
| JP2001215434A (en) * | 2000-02-01 | 2001-08-10 | Fuji Xerox Co Ltd | Optical scanner |
| JP2001228427A (en) * | 2000-02-16 | 2001-08-24 | Fuji Xerox Co Ltd | Optical scanner and image forming device |
| JP2002182145A (en) * | 2000-12-15 | 2002-06-26 | Ricoh Co Ltd | Optical scanner and image forming device with the optical scanner mounted thereon |
| JP2003270573A (en) * | 2002-03-18 | 2003-09-25 | Fuji Xerox Co Ltd | Optical scanner and image forming apparatus provided with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1989438A (en) | 2007-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100894951B1 (en) | Optical scanning device having scan line curvature correcting mechanim | |
| US7889409B2 (en) | Optical scanning device and image forming apparatus using the same | |
| CN100419494C (en) | Light beam scanner and image forming apparatus | |
| US8189251B2 (en) | Optical scanner and image forming apparatus including the same | |
| JP5039296B2 (en) | Image forming apparatus | |
| US9122062B2 (en) | Polygon mirror, light scanning unit employing the same, and electrophotographic image forming apparatus | |
| JP2004012596A (en) | Optical scanner and image forming apparatus | |
| EP2400348A2 (en) | Curve correction mechanism, optical scanner and image forming apparatus | |
| JP2002148551A (en) | Optical writer and image forming apparatus | |
| JPH11352430A (en) | Optical device | |
| EP1109048A2 (en) | Multi-beam scanning optical system and image forming apparatus using the same | |
| JP2007304166A (en) | Optical scanner | |
| JP2007025014A (en) | Adjusting apparatus, optical scanner and image forming apparatus | |
| CN100454082C (en) | Optical scanning device having scan line curvature correcting mechanim | |
| JP2008233197A (en) | Optical device unit, optical scanner and image forming apparatus | |
| JP5081511B2 (en) | Optical scanning apparatus and image forming apparatus | |
| JP2009014855A (en) | Optical scanner and image forming apparatus | |
| US7777775B2 (en) | Optical beam scanning apparatus, image forming apparatus | |
| JP5505753B2 (en) | Curvature correction mechanism, optical scanning device, and image forming apparatus | |
| US6144478A (en) | Flexible arm piezoelectric lens mover | |
| US10705445B2 (en) | Data processing device and image forming apparatus | |
| US11150590B2 (en) | Exposure device and image forming apparatus | |
| JP5896274B2 (en) | Image forming apparatus | |
| US20110279623A1 (en) | Optical scanning device and image forming apparatus | |
| JP2002347273A (en) | Color image forming apparatus |
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 |