CN100439222C - Sheet-conveying mechanism - Google Patents

Sheet-conveying mechanism Download PDF

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Publication number
CN100439222C
CN100439222C CNB2004800088498A CN200480008849A CN100439222C CN 100439222 C CN100439222 C CN 100439222C CN B2004800088498 A CNB2004800088498 A CN B2004800088498A CN 200480008849 A CN200480008849 A CN 200480008849A CN 100439222 C CN100439222 C CN 100439222C
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CN
China
Prior art keywords
mentioned
paper
rotation roller
guide rail
delivery mechanism
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.)
Expired - Fee Related
Application number
CNB2004800088498A
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Chinese (zh)
Other versions
CN1767990A (en
Inventor
清家俊彦
河野智
大石真嗣
堀孝志
泉英志
藤井智彦
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Sharp Corp
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Sharp Corp
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Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of CN1767990A publication Critical patent/CN1767990A/en
Application granted granted Critical
Publication of CN100439222C publication Critical patent/CN100439222C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/46Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52Friction retainers acting on under or rear side of article being separated
    • B65H3/5207Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/5215Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
    • B65H3/5223Retainers of the pad-type, e.g. friction pads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/66Article guides or smoothers, e.g. movable in operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36Article guides or smoothers, e.g. movable in operation
    • B65H5/38Article guides or smoothers, e.g. movable in operation immovable in operation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

A sheet-conveying guide is constructed from helical torsion springs (X). An end portion (B5) of one arm portion (B4) of each helical torsion spring supports a rotating shaft of a follower roller (R32) and applies an elastic force to the follower roller (R32). The arm portion (B4) formed in a curved shape causes a rotating roller (R31) to guide a sheet material in an early stage of the roller (R31). A coil portion (B1) of a helical coil spring (X) and an end portion (B3) of the other arm portion (B2) are fixed. Follower rollers (R32) are arranged parallel to a shaft (R31a) of the rotating roller, and a helical torsion spring (X) is provided at each follower roller (R32). An elastic force set for each helical torsion spring (X) is made to be strongest for a follower roller (R32) at a predetermined standard position and to be weaker for a follower roller (R32) away from the roller (R32) at the predetermined standard position.

Description

Paper delivery mechanism
Technical field
The present invention relates to the paper delivery mechanism that a kind of image processing system etc. possesses, it has: the rotation roller; By to this rotation roller elastic force-applying swing part; Transmit guide rail with paper, to transmission channeling conduct by the paper material that transmits between described rotation roller and the swing part.
Background technology
In image processing system etc., for paper materials such as transfer sheets, and be provided with the rotation roller that is driven and rotates and by to this rotation roller elastic force-applying swing part be driven voller or separating pad etc., paper is passed through between above-mentioned rotation roller and above-mentioned swing part, thereby transmit paper material by the rotational force of rotation roller.And, leading portion and/or back segment at above-mentioned rotation roller are provided with paper transmission guide rail, be used for paper material is directed between above-mentioned rotation roller and the above-mentioned swing part, perhaps in order to be directed to Next transfer path from the paper material that sends between above-mentioned rotation roller and the above-mentioned swing part.
Fig. 4 is the concise and to the point cutaway view that the existing paper of expression transmits the configuration example of guide rail.
Be placed on the paper material S on the predetermined paper feed part 1, send from above-mentioned paper feed part 1 by feeding-in roll R1, and be directed into separate roller R2 (example of above-mentioned rotation roller) and relative with it by spring etc. carry out elastic force-applying separating pad 2 (friction pad) between.When discharging many paper material S by above-mentioned feeding-in roll R1, since act between above-mentioned separating pad 2 and the paper material S and plurality of sheets of paper open the mutual friction force of material S and act on above-mentioned separate roller R2 and the paper material S that joins therewith between the difference of friction force, paper material S is separated the back one by one and is transmitted to back segment.At this moment, because the difference of the thickness of paper material S, above-mentioned separating pad 2 can shake (example of swing part).
Passed through the paper material S of above-mentioned separate roller R2 and above-mentioned separating pad 2, back segment at above-mentioned separate roller R2, transmit guide rail G channeling conduct by paper, be directed to the direction of deflector roll to (idle roller) R3, this deflector roll is to R3, and paper material S is sent to transfer printing portion to paper material S transferred image.
Above-mentioned deflector roll is to R3, and the deflector roll R31 that rotates by being driven carries out elastic force-applying and the driven voller R32 of driven rotation constitutes with relative with it by spring etc., and because of the thickness of paper material S, above-mentioned driven voller R32 can shake (example of swing part).Above-mentioned paper transmits guide rail G, is made of metal sheet or resin etc., and is formed: at the leading portion of above-mentioned deflector roll R31, paper material S is directed between above-mentioned deflector roll R31 and the above-mentioned driven voller R32.
At this, (below be generically and collectively referred to as swing part) can shake because above-mentioned separating pad 2 and above-mentioned driven voller R32, so transmit between guide rail G and the above-mentioned swing part at above-mentioned paper, is provided with predetermined slit 4,5, disturbs with these actions preventing.
But, in recent years, progress along with the miniaturization of installing, paper transmission guide rail is constituted as and makes paper material with very little radius of curvature travel direction conversion, so there is following problem: at the place, slit of itself and above-mentioned swing part, paper material conflicts with above-mentioned swing part or rotation roller, easily paperboard.In example shown in Figure 4, the part in slit 5 especially, radius of curvature is little, and paperboard takes place easily.
To this, open in the flat 06-92505 communique the spy, proposed to guide the structure of paper material by being configured near the thin film component of hold-down roller (example of rotation roller), still, there is the problem that is difficult to travel direction conversion under little radius of curvature in the thin film component.
The object of the present invention is to provide a kind of paper to transmit guide rail, can the rotation roller and by to this rotation roller elastic force-applying the front and back of swing part, there is not ground, slit successfully to the paper material channeling conduct, and also can corresponding situation about under little radius of curvature, the paper material travel direction being changed.
Summary of the invention
The present invention has: the rotation roller; By to this rotation roller elastic force-applying swing part; Transmit guide rail with the paper that constitutes by elastomeric element, before above-mentioned rotation roller and/or afterwards, to transmission channeling conduct by the paper material that transmits between above-mentioned rotation roller and the above-mentioned swing part, the part that this paper transmits guide rail is connected with above-mentioned swing part, the elastic force that above-mentioned paper is transmitted guide rail imposes on above-mentioned swing part, and above-mentioned swing part is carried out elastic force-applying to above-mentioned rotation roller.
For example, above-mentioned elastomeric element is the torsion-coil spring with first arm and second arm, by first arm of this torsion-coil spring and second arm to above-mentioned paper material channeling conduct.
As above-mentioned swing part, separating pad that separates one by one along with the driven voller of the driven rotation of above-mentioned rotation roller or with above-mentioned paper material and transmit etc. is arranged.
Thereby, part (arm of above-mentioned torsion-coil spring etc.) to the paper material channeling conduct extends to the above-mentioned swing part relative with above-mentioned rotation roller, so between to the above-mentioned swing part of the partial sum of paper material channeling conduct, can not produce the slit, can realize the smooth transmission (guiding) of paper material.And, the shape set of above-mentioned elastomeric element (i.e. this paper transmit guide rail) is become when changing the shape of needed radius of curvature coupling with the direction of carrying out paper material transfer path that can also corresponding small curvature radius.
In addition, transmit constituting of guide rail as the paper that is formed by above-mentioned torsion-coil spring, for example can consider, above-mentioned swing part is by whorl or arm support of above-mentioned torsion-coil spring.
At this moment, can consider, above-mentioned swing part with the direction of the axle almost parallel of above-mentioned rotation roller on had a plurality ofly by assortment, this paper transmits guide rail and is made of the above-mentioned elastomeric element that above-mentioned swing part is provided with respectively.
Thereby, at the Width of paper material the direction of the axle almost parallel of above-mentioned rotation roller (promptly with), guide portion such as arm to the above-mentioned torsion-coil spring of its channeling conduct are had a plurality of by assortment, if set its assortment for suitable narrow interval at interval, even under the bigger situation of the size (width) of paper material, also channeling conduct stably.
And in this case, above-mentioned elastomeric element elastic acting force separately preferably, is set the most by force to the above-mentioned swing part on the predetermined reference position, and is set than a little less than it to the locational above-mentioned swing part that leaves the said reference position.
Thereby, when above-mentioned swing part is above-mentioned driven voller, can prevent that paper material from producing gauffer.The said reference position for example is the axial central authorities of above-mentioned rotation roller or an end etc.
Description of drawings
Fig. 1 is the concise and to the point cutaway view of the related paper delivery mechanism of embodiments of the present invention.
Fig. 2 is that paper transmits the concise and to the point front view of guide rail X and the chart of the spring pressure distribution of representing torsion-coil spring.
Fig. 3 is the concise and to the point cutaway view of the related paper delivery mechanism of additional embodiments of the present invention.
Fig. 4 is the concise and to the point cutaway view that existing paper transmits guide rail.
The specific embodiment
With reference to the accompanying drawings, embodiments of the present invention are described.
In addition, following embodiment is the example that the present invention is specialized, and is not to be that technical scope of the present invention is limited.
Fig. 1 is the concise and to the point cutaway view of the related paper delivery mechanism of embodiments of the present invention, and Fig. 2 is the chart that the concise and to the point front view of this paper delivery mechanism and the spring pressure of representing torsion-coil spring distribute.
Above-mentioned paper delivery mechanism is the mechanism that is applicable to the paper feed part of image processing system.This paper delivery mechanism has paper and transmits guide rail X.Paper transmits guide rail X, constitute (following title torsion-coil spring X) by torsion-coil spring, be set at the leading portion of deflector roll to R3, this deflector roll is sent to the transfer printing portion 3 of transfer printing toner image on this paper material S to the paper material S such as log sheet that R3 will send from predetermined paper feed part 1.
Above-mentioned torsion-coil spring X, the end B3 of its a whorl B1 and one arm B2 is fixed on the framework of image processing system main body, by the end B5 of another arm B4, to constituting above-mentioned deflector roll the S. A. of the driven voller R32 of R3 is supported.Thereby above-mentioned driven voller R32 is under the elastic force effect of above-mentioned torsion-coil spring X, with respect to constituting the deflector roll R31 (example of above-mentioned rotation roller) of above-mentioned deflector roll to R3, by elastic force-applying.And, above-mentioned arm B4 is crooked and form along the transfer path of paper material S.
Be placed on the paper material S on the above-mentioned paper feed part 1, the same with conventional device shown in Figure 4, sent from above-mentioned paper feed part 1 by feeding-in roll R1, carry out the separating pad 2 (friction pad) of elastic force-applying with relative with it by spring etc. by separate roller R2, paper material S is separated one by one and is transmitted to back segment.Above-mentioned separating pad 2 is supported on the predetermined S. A. 2a rotationally, and because of the difference of the thickness of the paper material S that passes through, above-mentioned separating pad 2 can shake (rotation).
Passed through the paper material S of above-mentioned separate roller R2 and above-mentioned separating pad 2, the arm B4 channeling conduct by above-mentioned torsion-coil spring X is directed into the direction of above-mentioned deflector roll to R3.
At this, constitute one of them the above-mentioned driven voller R32 of above-mentioned deflector roll to R3, under the elastic force effect of above-mentioned torsion-coil spring X, end B5 by its arm B4 carries out elastic force-applying to above-mentioned deflector roll R3 1, so above-mentioned driven voller R32 shakes (example of swing part) because of the thickness of the paper material S that passes through.
By this formation, arm B4 to the above-mentioned torsion-coil spring X of paper material S channeling conduct extends to above-mentioned driven voller R32, so between to the part (B4) of paper material S channeling conduct and above-mentioned driven voller R32, can not produce the slit, just can realize the smooth transmission (guiding) of paper material S.And, the shape set of above-mentioned arm B4 is become the curved shape of changing needed radius of curvature coupling with the direction of carrying out paper material, thus transfer path that also can corresponding small curvature radius.
Fig. 2 is the chart (Fig. 2 B, C) that the concise and to the point front view (Fig. 2 A) of paper transmission guide rail X and the spring pressure of representing torsion-coil spring distribute.Shown in Fig. 2 A, above-mentioned driven voller R32 has a plurality of (in Fig. 2, assortment has 5) in the direction assortment with the axle R31a almost parallel of above-mentioned deflector roll R31, and above-mentioned driven voller R32 is respectively equipped with above-mentioned torsion-coil spring X.The end of the arm B4 of torsion-coil spring X is assembled on the driven voller R32 axle separately, and is assembling support R30 on this axle, comes off to prevent this end.
By this formation, at the Width of paper material S (promptly, direction with the axle R31a almost parallel of above-mentioned deflector roll R31), assortment has the arm B4 (not shown in Fig. 2) of a plurality of above-mentioned torsion-coil springs to its channeling conduct, if set this assortment for suitable narrow interval at interval, even then under the bigger situation of the size (width) of paper material S, also channeling conduct stably.
At this, the elastic force (spring pressure) that a plurality of above-mentioned torsion-coil spring X are set respectively, promptly, from the elastic acting force of above-mentioned driven voller R32 to deflector roll R31, shown in the spring pressure distribution graph of Fig. 2 B, be constituted as: the above-mentioned driven voller R32 to predetermined reference position P0 is the strongest, to the above-mentioned driven voller R32 of the position of leaving said reference position P0 then than a little less than it.
Thereby, be delivered to conveying capacity on the paper material S from above-mentioned deflector roll R31, act on direction that the gauffer of paper material S stretches (in the spring pressure shown in Fig. 2 B distributes, from the central part of the axle R31a of above-mentioned deflector roll R31 to the direction in two outsides), so, can prevent that paper material from producing gauffer.
The elastic force (spring pressure) that above-mentioned torsion-coil spring X is set respectively, the gauge or diameter of wire by above-mentioned torsion-coil spring X, opening angle, the spiral number of turns of above-mentioned whorl B1, material (kind) of wire rod etc. are set (adjustment) and are got final product.
In addition, in Fig. 2 B, with above-mentioned deflector roll R31 the axle R31a approximate centre portion be said reference position P0, the position of leaving to two outsides from here, spring pressure is just weak more, but is not limited to this, for example also can be shown in Fig. 2 C, near the end with the axle R31a of above-mentioned deflector roll R31 be said reference position P0, and from here to the position that the opposition side of above-mentioned axle R31a direction leaves, spring pressure is just weak more.This reference position P0 for example, can consider following position: under the situation that can transmit the different paper material S of size (width), transmit the paper material S of virtually any size, the position that paper material S can pass through.
Below, with reference to Fig. 3, other embodiment of the present invention is described.
In Fig. 3, paper delivery mechanism of the present invention is applicable to the guiding of paper material of the back segment of above-mentioned separate roller 2.
The paper that is comprised in the above-mentioned paper delivery mechanism transmits guide rail X1, constitute (following title torsion-coil spring X1) by torsion-coil spring, be constituted as: the end B3 ' of an one arm B2 ', be fixed on the S. A. 2a of above-mentioned separating pad 2 (friction pad), this separating pad 2 is fixed on the framework of image processing system main body, the end B5 ' of another arm B4 ' is fixed on the guide portion 6 of back segment, this guide portion 6 also is fixed on the framework of image processing system main body, and, support by whorl B1 ' near the rotation leading section of above-mentioned separating pad 2.
Thereby above-mentioned separating pad 2 (example of above-mentioned swing part) is under the elastic force effect of above-mentioned torsion-coil spring X1, to above-mentioned separate roller R2 (example of above-mentioned rotation roller), by elastic force-applying.
By this formation, the arm B4 ' of above-mentioned torsion-coil spring X, just across between the guide portion 6 of above-mentioned separating pad 2 and back segment thereof, so arm B4 ' becomes the guide rail of filling the slit between above-mentioned separating pad 2 and the guide sections 6, thereby can carry out the smooth transmission (guiding) of paper material.
In addition, in the above embodiment, the elastomeric element of the elastic force-applying parts of the above-mentioned swing part of double as (above-mentioned driven voller or above-mentioned separate roller) and the guide member of front and back thereof is torsion-coil springs, but also can be other metal partss that can access the sufficient elasticity application force etc.
In sum, according to the present invention, elastomeric elements such as torsion-coil spring, double as carries out the parts of elastic force-applying and rotates the paper material guide member of the front and back of roller swing part with respect to the rotation roller, thereby form the formation that the part (arm of torsion-coil spring etc.) of paper material channeling conduct is extended to swing part, so, between partial sum swing part, can not produce the slit to the paper material channeling conduct, can carry out the smooth transmission (guiding) of paper material.And, the shape set of elastomeric element is become when changing the shape of needed radius of curvature coupling with the direction of carrying out paper material transfer path that can also corresponding small curvature radius.
The explanation of above-mentioned embodiment should be considered as being example in all respects, rather than limit.Scope of the present invention is not above-mentioned embodiment, but shown by the scope of claim.And, in the scope of the present invention, comprise and the equal connotation of the scope of claim and all changes in scope.
Utilize possibility on the industry
The present invention transmits applicable to image processing system, printer, facsimile machine etc. and output paper The paper feed part of the device of opening and row's paper section.

Claims (11)

1. a paper delivery mechanism is characterized in that,
Have: the rotation roller;
By to this rotation roller elastic force-applying swing part; With
The paper that is made of elastomeric element transmits guide rail, before above-mentioned rotation roller and/or afterwards, to the transmission channeling conduct by the paper material that transmits between above-mentioned rotation roller and the above-mentioned swing part, the part that this paper transmits guide rail is connected with above-mentioned swing part
The elastic force that above-mentioned paper is transmitted guide rail imposes on above-mentioned swing part, and above-mentioned swing part is carried out elastic force-applying to above-mentioned rotation roller.
2. paper delivery mechanism according to claim 1, wherein,
Above-mentioned elastomeric element is the torsion-coil spring with first arm and second arm, by first arm of this torsion-coil spring and second arm to above-mentioned paper material channeling conduct.
3. paper delivery mechanism according to claim 2, wherein,
Above-mentioned swing part is the driven voller along with the driven rotation of above-mentioned rotation roller.
4. paper delivery mechanism according to claim 3, wherein,
Above-mentioned driven voller is by first arm support of above-mentioned torsion-coil spring.
5. paper delivery mechanism according to claim 2, wherein,
Above-mentioned swing part is the separating pad that above-mentioned paper material is separated one by one and transmits.
6. paper delivery mechanism according to claim 5, wherein,
Above-mentioned separating pad is by the whorl support of above-mentioned torsion-coil spring.
7. paper delivery mechanism according to claim 4, wherein,
Above-mentioned swing part, with the direction of the axle almost parallel of above-mentioned rotation roller on had a plurality ofly by assortment, above-mentioned swing part is respectively equipped with above-mentioned paper transmits guide rail.
8. paper delivery mechanism according to claim 7, wherein,
Above-mentioned paper is transmitted the size of the above-mentioned elastic force that guide rail applies respectively, be set to: it is the strongest that the above-mentioned paper on the predetermined reference position is transmitted the power that guide rail applies, and the locational above-mentioned paper that leaves the said reference position is transmitted force rate that guide rail applies a little less than it.
9. paper delivery mechanism according to claim 7, wherein,
It is far away more apart from the said reference position that each above-mentioned paper transmits guide rail, and the above-mentioned elastic force that this above-mentioned paper is transmitted the guide rail setting is set weakly more.
10. paper delivery mechanism according to claim 8, wherein,
Assortment has under the state of a plurality of above-mentioned swing parts on the direction parallel with the axle of above-mentioned rotation roller, and the center of the axle of above-mentioned rotation roller is the said reference position.
11. paper delivery mechanism according to claim 9, wherein,
Assortment has under the state of a plurality of above-mentioned swing parts on the direction parallel with the axle of above-mentioned rotation roller, and the position of one of them end at the both ends of the axle of above-mentioned rotation roller is the said reference position.
CNB2004800088498A 2003-04-02 2004-03-25 Sheet-conveying mechanism Expired - Fee Related CN100439222C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003099482A JP4197449B2 (en) 2003-04-02 2003-04-02 Sheet transport guide
JP099482/2003 2003-04-02

Publications (2)

Publication Number Publication Date
CN1767990A CN1767990A (en) 2006-05-03
CN100439222C true CN100439222C (en) 2008-12-03

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US (1) US20060180989A1 (en)
JP (1) JP4197449B2 (en)
CN (1) CN100439222C (en)
WO (1) WO2004099048A1 (en)

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JP5331398B2 (en) * 2007-07-30 2013-10-30 京セラドキュメントソリューションズ株式会社 Paper feeding device and image forming apparatus provided with paper feeding device
JP5099768B2 (en) * 2008-01-22 2012-12-19 株式会社リコー Sheet conveying apparatus and image forming apparatus
JP5659670B2 (en) * 2010-10-05 2015-01-28 株式会社リコー Paper feeding device and image forming apparatus having the same
JP6056334B2 (en) * 2012-09-28 2017-01-11 ブラザー工業株式会社 Image forming apparatus
JP6081792B2 (en) * 2012-12-20 2017-02-15 株式会社Pfu Document transport device
JP6137838B2 (en) * 2013-01-11 2017-05-31 キヤノン株式会社 Sheet feeding apparatus and image forming apparatus
JP6176977B2 (en) * 2013-04-02 2017-08-09 キヤノン株式会社 Image forming apparatus
JP6264033B2 (en) * 2013-12-27 2018-01-24 ブラザー工業株式会社 Sheet transport device

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US20060180989A1 (en) 2006-08-17
WO2004099048A1 (en) 2004-11-18
CN1767990A (en) 2006-05-03
JP4197449B2 (en) 2008-12-17
JP2004307087A (en) 2004-11-04

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