WO2005087994A1 - Cleaning shaft - Google Patents

Cleaning shaft Download PDF

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Publication number
WO2005087994A1
WO2005087994A1 PCT/CH2005/000161 CH2005000161W WO2005087994A1 WO 2005087994 A1 WO2005087994 A1 WO 2005087994A1 CH 2005000161 W CH2005000161 W CH 2005000161W WO 2005087994 A1 WO2005087994 A1 WO 2005087994A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
characterized
knife
cleaner
rotation
Prior art date
Application number
PCT/CH2005/000161
Other languages
German (de)
French (fr)
Inventor
Götz Theodor Gresser
Dyrk Saaro
Peter Netzhammer
Christian Sauter
Original Assignee
Maschinenfabrik Rieter Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CH00462/04 priority Critical
Priority to CH4622004 priority
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Publication of WO2005087994A1 publication Critical patent/WO2005087994A1/en

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G9/00Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/12Combinations of opening or cleaning machines
    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02Carding machines
    • D01G15/12Details
    • D01G15/34Grids; Dirt knives; Angle blades

Abstract

The invention relates to a cleaning shaft for a carder, wherein a blade is associated with the opening cylinder.

Description

cleaning slot

The present invention relates to a cleaner shaft for spinning machines, such as carding machines, carding.

The material supply of the card has an influence on the final product of the card: The card sliver. Irregularities in the power supply can be detected in the band, since they are responsible for the formation of thick or thin places, the formation of thick or thin places cq cause. These defects can over the remaining processes to produce a yarn that hardly corrected and therefore have a direct impact on the final yarn quality. To arrive at the uniform templates cotton wool, which is formed in the feed chute must equally distributed over the width and of equal density. One problem here is the pneumatic supply flocks that unevenly is supplying the single card with flakes. This problem was solved by a chute by a

Feeder was divided into two parts, whereby the actual batting template to the card is only influenced locally by the feed device.

A further requirement of the template, in particular for high performance carding machines, a high degree of resolution because a portion of the increase in performance of this carding compared with conventional cards by a greater Garniturbeaufschlagung is concluded and it thereby requires correspondingly fine open material. Therefore, an opening roller was disposed directly after the feed device, which largely dissolves the flakes. Although the wells were optimized by improving the air budget and design improvements, this is

remained basic principle of the two-piece shaft and is used today in principle.

The current generation of high-performance cards have a production of up to 180 Kg per hour. At these high production demands have risen to the template. For the pre-cleaning of this template in Putzereiprozess

BESTATIGUNGSKOPIE mainly cleaning machines, such as coarse or fine cleaner cleaner responsible.

The coarse cleaner is usually located at the beginning of the process immediately after the bale opener, which removes the cotton from the bale and fed into the pneumatic transport. The coarse cleaner comes in very different models, but they have some common features. The material is usually processed in free flight using coarse-equipped work rolls. The opening action is therefore low, and especially coarse dirt that is present on the outside of the flakes is removed. Coarse cleaner also remove free dirt particles such as trash or other debris.

The fine cleaner comes much later in the process and is usually preceded by just the cards. The fine cleaner is more focused on the removal of dirt from the inside of the flakes. Therefore, this purification step is to take place after an additional opening step. The fine cleaner almost always works with supply and clamped a finer placement of the feeding downstream roller. For a more intensive cleaning the opening roller is equipped as a cleaning roller, for example with rust knives and a saw tooth on the roller.

Cleaner bays, a hopper with a cleaner function are in practice no present. EP 810 309 discloses a system concept, wherein the fine cleaner is integrated into the hopper. The document discloses a hopper having a plurality of grate bars compliant expanding in a fine cleaner. This solution has the disadvantage that the arrangement of the grate bars is very complicated and the space which is in a hopper provided, is smaller than the can in a fine cleaner, whereby either a lack of space or forfeit the functionality is created.

The disclosed arrangements have the disadvantage mainly that they are expensive complicated in construction and characterized. In addition, they would not be reliable functioning can choose from technological point of view. The invention is based on the object to provide a device of the type described above which avoids the disadvantages mentioned, in particular, integrated into the fine cleaning function into the hopper, without adopting the complicated construction of the fine cleaner.

The solution of this object is achieved by the characterizing features of claim 1. By the knife nachzuordnen directly the transfer point, not only the dirt particles, which are thrown by the centrifugal force of the opening roller outwardly away but the particles obtained by the " combing action "of the transfer point are released. A guide element arranged before the knife immediately after the transfer point, these released particles would push back on the roller and thereby discriminate against removal. Directly then here means without intervening elements that could exert an influence on the separating movement of the dirt particles.

The dropping of particles onto a roll such. As dirt particles or fibers is effected generated by the opener roller (2), tangentially to the roller surface (1) extends in the rotational direction by the centrifugal force (see schematic representation in Figure 1.) In addition to this force also the force of gravity (g) acting on the particles. In the optimal release point, both forces extend in the same direction. In a roll of this point would be measured by the axis of rotation of the opening roller in the rotational direction in an angle of 90 ° relative to the vertical line. measured at an angle of about 230 ° relative to the vertical line through the axis of rotation of the opening roller in the rotational direction acting on the particles discarding gravity and the centrifugal force are not suitable to ensure a technologically meaningful shedding. Therefore, preferably the range of 10 to a maximum of 190 ° relative to the vertical line through the axis of rotation of the opening roller in the direction of rotation suitable for the arrangement of a Abwerfstelle.

However, it is undesirable that both the dirt and the fibers are dropped on the same point. Therefore, it takes two Abwerfstellen: the Schmutzabwerfstelle and Faserabwerfstelle. Although in an ideal case for a particle a precise release point can be determined, it is in practice not be a precise point but with dirt or fibers to a discharge area.

To maintain a constant cleaning in the cleaning shaft to achieve according to the invention, both discharge point are preferably arranged such that an interference-free disposal disposal is guaranteed, and possible impairment of the air balance can be excluded.

The dirt discharge point, named after the precipitation site is defined by the leaving-gap between the transfer point and the knife edge. Wherein the transfer point is defined as the point where the smallest distance between the set of the feed device and the opening roller is. This place is also sometimes called meshing point, here, the fibers are taken from the opening roller. The distance between the transfer point and the knife edge in terms of the angle (ß) between the transfer point and the knife edge, measured from the transfer point through the axis of rotation of the opener roller in the direction of rotation, is between 10 ° and 65 degrees, preferably between 10 and 45 degrees, in particular between 20 ° and 32 °. This distance affects the opening of goers cleavage and thereby the amount of waste disposal and compilation.

Since the cleaner shaft is intended in the first instance for cleaning cotton, the adjustment of the angle (ß) is dependent on inter alia the length of the individual fibers and the degree of contamination. However, the hopper can also by the knife to a minimal state, for the resolution of

Fibers are used. The knife is then function as a normal baffle. Or the knife can be replaced by a baffle and the shaft cleaner would work like a normal hopper.

By the resolution already exposed dirt particles are ejected into the outlet channel after the handover point from the impact circle according to the acting on them centrifugal force. Therefore, preferably inclined, the feed roller with respect to the opening roller in an angle (α) of 25 ° to 90 ° (as measured by the axis of rotation of the feed roller and the opener roller with respect to the vertical plane through the axis of rotation of the opening roller in the direction of rotation of the opening roller.)

The fiber discharge point should preferably be arranged such that a technologically meaningful dropping of the good fibers is carried out. Since the dissolution of the fiber flocks takes place at the transfer point, a long residence time of the fibers on the opening roller is not technologically useful therefore has a quick drop swiftly on the whole process. Between the knife edge and the discharge point a guide surface is arranged that a clear separation between

allows precipitation site and the fiber discharge point. This guide surface may be formed as a separate guide element or together with the knife. Preferably, the knife is extended to the rear, is explained in more detail later.

The guide surface may be parallel to the radius of the roller surface, the distance to the roller surface may be equal to or remain open. means to open, that the spacing of the two surfaces to each other increases in the rotational direction. Once the gap opens, the fibers are inclined outwardly to move on the set, so that they can be thrown off. This movement of the fibers is such that the discharge point preferably in an angle (γ) of 40 ° to 55 ° (measured from the beginning of the opening through the axis of the opening roller in the rotational direction) is arranged. With the beginning of opening the place is meant where the distance from the guide element relative to the roller surface begins to enlarge. Preferably, this opening takes place directly after the knife edge, the discharge point is then placed in an angle (γ) of 40 ° to 55 °, measured from the knife edge through the axis of the opening roller arranged in the rotational direction.

The knife is preferably merged with the guide element which is arranged downstream. The knife edge will have the dirt particles and fibers that sweep over the edges a high potential for wear. For this you can either select an Abrasion material and / or make the knife edge interchangeable. An alternative solution is the production of the knife and guide element in one piece. Heretofore a piece of sheet metal is manufactured in the desired thickness until grinding the knife edge and then bending the sheet into the desired curvature. This results in a finer knife edge that no additional

having fasteners or grooves in which dirt or fibrous scraps may adhere. This manufacturing technique has an advantage that a stable, cost-effective diameter can be produced, which is replaceable. Therefore, this knife are arranged the fastening elements preferably on the side, in particular fastener elements, a change of adjustment of the distance

Which allow transfer point / knife edge while the knife is mounted.

the degree of purification is influenced which can be reached by the cleaner shaft according to the invention the distance of the knife edge to the needle tips and the distance from the blade edge to the transfer point. This last knife setting can be adjusted manually or by means of a drive. In this case, the setting can take place continuously or at predetermined intervals. In addition, the adjustment can be combined with a controller which carries out the setting or adapting, preferably in dependence on the degree of dirt, fiber length or origin. This setting can also be a function of parameters that would otherwise be measured at the carding machine, for example, the number of neps in the outgoing product. In addition to the adjustment of the diameter and the speed of the opening roller has an effect on the degree of purification. This parameter can be integrated with the control.

Examples and advantageous developments of the invention are explained using the figures. The reference numbers have been kept the same in all figures.

Figure 1 Schematic representation of the relationship of forces exerted on the particles (see description above).

Figure 2 Scheme of the inventive arrangement of the cleaning station

Figure 3 is a schematic example of the inventive arrangement, the cleaner shaft. Figure 4 is a schematic side view of a card with the cleaner shaft according to the invention Figure 5 Schematic representation of the knife

Figure 2 shows schematically the arrangement options of the cleaning body according to the invention, wherein

1. α, the angle of inclination of the feed roller with respect to the opening roller measured by the axis of rotation of the feed roller and the opener roller with respect to the vertical plane through the axis of rotation of the opening roller in the direction of rotation of the opening roller;

2. ß, the angle between the transfer point and the knife edge measured from the transfer point through the axis of rotation of the opener roller in the direction of rotation and

3. γ represents the angle between the knife edge or the beginning of the opening of the guide element and the discharge point, where the beginning of the opening of the leading element is the point from where the distance guide element - roll surface begins to enlarge in the direction of rotation.

The angles α, ß, and γ the top 180 together preferably - 200 ° not to allow the fiber, drop point is also located at a technologiscli meaningful place. It is not necessary to tilt the feed roller with respect to the opening roller in the direction of rotation, however, even a slight inclination advantageous effect on soil removal. An example of a cleaner shaft arrangement could therefore be a α of 45 °, a ß adjustable between 20 ° and 35 ° and γ 45 °. The dirt separation point would then be between the angle α and ß, or between 45 ° and 80 ° and the ejection point would then occur after a total angle of α, ß, and γ of not more than 125 °. Which should be noted again that it is not here to absolute discharge points, but areas. In this example, the cleaner assembly the dirt separation point and the discharge point fiber around the respective optimum discharge point are arranged. Both the waste separation point and the fiber discharge point have the advantage that gravity supports the dropping of particles and need under circumstances no additional suction for the removal of shed particles.

It may be advantageous an additional guide element or baffle plate (28) to be arranged such that the dropped Faerflocken are deflected in the lowermost shaft section. Especially if the total angle is near 180 ° to 200 °.

Figure 3 schematically shows an inventive arrangement of the cleaning station at a cleaner shaft. The feed roller 9 and the feed trough 10 together transport the cotton flocks from the upper part of the hopper (7) on the opening roller (1), also known as opening roller. The smallest distance between the feeding trough and the feed roller forms the feed point or terminal point.

The flakes are transported further until it reaches between the two rollers, the smallest distance between the two rollers. This point is called transfer point (17) - but is also known as Kämmstelle or meshing point. The cotton fibers are passed here the opening roller. By the resolution of already exposed dirt particles (12) are ejected by the transfer point from the impact circle according to the centrifugal force acting on them in the outlet channel. This outlet channel may be for example in the form of an extracted channel, or in the form of a channel which is directed directly downward, whereby gravity assists with the removal.

The adhering to the clothing of the opener roller fiber flocks are passed directly after the point of meshing engagement at a knife edge (3), are excreted in the other coarse dirt and unresolved Faserverknotungen. The distance between the knife edge of the transfer point is adjustable, whereby the height of the amount of waste and thus the cleaning efficiency may be affected. The good fibers are transported further to the opener roller, a guide element along which is arranged downstream of the knife directly. The fiber material is then thrown off tangentially from the opening roller in the lower chute portion (8). There can be obtained by, a compression fan, air introduced (13) to be further compressed. Also, an air flow on the opening roller directed to the ejection of the flakes and or supporting fibers can be an option. this air is discharged again through a screen wall at the back of the lower shaft (14). Through the discharge rollers 15 in the lower shaft, the batt is placed on the inlet sheet 16 of the feed roll of the carding machine.

Figure 4 shows a revolving flat card 20, for. B. Rieter card C60 according to a working width of 1, 5 meters, with a cleaner shaft 6 invention. Fiber flocks through transport channels (not shown) conveyed by the different Putzereiprozessstufen and finally supplied into the cleaner shaft of the card. These are the fiber flocks then than wadding on the card on. The feeder 27 feed the fiber flocks to the lickers 21. The licker open the fiber flocks and remove some of the dirt particles. The last licker transfers the fibers to the carding drum 22. The card cylinder 22 operates with the covers 24 together and this paralleled the fibers further. The lids are cleaned by a lid cleaning 25. After the fibers have sometimes performed several turns on the card cylinder, they are removed from the doffer 23 of the carding drum, the nip roll fed 26, and finally deposited as a card sliver in a can coiler in a can (not shown).

5 shows a guide element is illustrated with a knife edge. It can also be viewed as a long knife.

Production as a knife can be done, for example, be manufactured in a first production step, a straight knife plate with a knife edge. In a second production step can then bend the elongated knife over the width in the desired radius. Preferably such that the radius is greater in the direction of the opening roller. Thereby, the gap between the element and the roller, causing the dropping of the fibers is opened. The production steps could take place in reverse. But to achieve an accurate knife edge this is not advantageous.

The knife edge may be formed by machining of the sheet in the straight form, in particular, for example by milling or grinding. Preferably, the knife edge is sharpened only on one side, in particular the side averted from the roller. Thereby forms the side which faces the roller, a smooth surface and prevent fiber adhesion. Alternatively, the elongated blade can also be formed of two parts according to the invention.

To the elongated blade to be attached are fastening elements (5) arranged, for example, a slot and a fixing screw, preferably (shown in figure 5 only one side of the knife.) Only on the front sides of the knife Preferably, the means of attachment are arranged in such a way that the distance between the transfer point and the knife edge can be adjusted, which includes a displacement in the radial direction. This setting can then be preferably changed manually or automatically, preferably by means of a drive.

The cleaner shaft could be provided with an autonomous own control, or to a superordinate control system, for example, of the carding machine or the entire system can be connected. the degree of cleaning, the fiber loading in the form of fiber damage and / or nits increase and the loss of good fibers in the finish, important parameters, some of which are related to each other for a good functioning of the cleaner shaft. For example, is a high degree of purification, also usually paired with increased fiber load. These parameters may be associated with machine parameters such as the speed of the opening roller, the distance over point-blade edge, or the distance nip transfer point. these settings can be integrated into a control panel to change the setting to simplify, as has been described for example in EP 452 676. The operation is simplified so that the person operating just have to take a few decisions and thus can adjust all machine parameters, for example, the group parameters, cleaning intensity and amount of waste.

Combinations with parameters measured on the card are possible, for example, an adjustment of the settings based on a measured parameter of the card, for example, Nissen, thin or thick spot. These can be measured for. B. on the web in the pick-up area or on tape.

Key figures first opening roller (also known as opening roll second roller surface 3. knife edge 4. guide element 5. fastener 6. cleaner shaft 7. Upper shaft part 8. Lower chute portion 9 feed roller 10 feed trough 11 set 12 trash removal channel (also leaving channel) 13 . Einblasluftzufuhr lower shaft section 14 permeable wall for the separation of air and dust 15 feeder 16. baffle 17 transfer point (also Kämmstelle) 18. Schmuzausscheidestelle (also dirt discharge point) 19. fiber discharge point 20, carding 21 Norreiser (also known as licker) 22 . drum or reel 23 off roller 24 revolving flat unit 25, cleaning elements for the revolving flats 26 outlet 27 feed device 28 baffle or baffle α angle of inclination of the feed roll towards the opening roller ß angle between the transfer point and knife edge γ angle between knife edge and fiber discharge point

Claims

claims
1. cleaner shaft (6) for a spinning machine, with a roller (1), preferably an opening roller, and, arranged on this roller knife with a counter to the rotational direction of the roll arranged knife edge (3), a feed device for the roller, preferably a feed roller (9) with a recess (10), wherein the feed device is assigned to the roller, that a handover point (17) is formed, characterized in that the knife is arranged directly after the transfer point.
2. cleaner shaft as claimed in claim 1, characterized in that the transfer point (17) is formed where the plane through the axes of rotation of the drawing-in and opening roller at an angle (α) of 25 ° to 90 ° relative to the vertical plane through the axis of rotation opening roller is inclined in the rotational direction of the opener roller.
3. cleaner shaft as claimed in claim 1 or 2, characterized in that the angle (ß) between the transfer point and the knife edge is between 10 and 65 °, in particular between 10 ° and 45 °, measured from the transfer point through the axis of rotation of the opener roller in rotation.
4. cleaner shaft as claimed in any of the preceding claims, characterized in that the angle (γ) between the knife edge and the start of the fiber drop point between 40 ° and 55 °, measured from the knife edge through the axis of rotation of the opener roller in the direction of rotation.
5. cleaner shaft as claimed in any of the preceding claims characterized in that a guide element (4) is arranged downstream of the knife edge.
6. cleaner shaft as claimed in claim 5, characterized in that the knife edge and the guide element are in one piece.
7. cleaner shaft as claimed in claim 5 or 6 characterized in that the distance of the guide element to the surface of the clothing on the roller is constant.
8. cleaner shaft as claimed in claim 5, 6 or 7, characterized in that the distance of the guide element to the surface of the clothing on the roller remains the same.
9. cleaner shaft as claimed in claim 5, 6 or 7, characterized in that the distance of the guide element to the surface of the clothing on the roller increases in the direction of rotation.
10. cleaner shaft as claimed in claim 9, characterized in that this increase in the distance starts directly after the knife edge.
11. cleaner shaft as claimed in claim 9, characterized in that this increase in the distance starts after an area with constant distance of the guide element relative to the roller surface.
12. cleaner shaft as claimed in claim 11, characterized in that the angle (γ) between the beginning of the increase in the distance and the beginning of fiber drop point between 40 ° and 55 °, measured from the beginning of the increase in the distance through the axis of rotation of the opener roller in rotation.
13. Cleaner well according to one of claims 1 to 12, characterized in that the adjustment of the knife edge relative to the transfer point is adjustable.
14. cleaner shaft as claimed in claim 13, characterized in that a drive is provided for adjusting mechanical means, for example.
15. Cleaner well according to one of claims 1 to 14, characterized in that it can be connected to a control or itself contains a control.
16, knife for the cleaner shaft as claimed in any one of claims 1 to 15 characterized in that it is molded together with the guide element from a metal sheet.
17. A knife according to claim 16 characterized in that the knife edge contains on only one side a knife cut is located at the side facing away from the opening roller side.
18. A knife according to claim 16 or 17 characterized in that the knife with guide element having the bent radius in such a way, the guide element can be arranged parallel to the surface of the dissolution Rollers.
PCT/CH2005/000161 2004-03-18 2005-03-17 Cleaning shaft WO2005087994A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH00462/04 2004-03-18
CH4622004 2004-03-18

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200550004191 DE502005004191D1 (en) 2004-03-18 2005-03-17 Cleaning slot.
BRPI0508907 BRPI0508907A (en) 2004-03-18 2005-03-17 manhole
EP20050714703 EP1733080B1 (en) 2004-03-18 2005-03-17 Cleaning shaft

Publications (1)

Publication Number Publication Date
WO2005087994A1 true WO2005087994A1 (en) 2005-09-22

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ID=34961749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2005/000161 WO2005087994A1 (en) 2004-03-18 2005-03-17 Cleaning shaft

Country Status (5)

Country Link
EP (1) EP1733080B1 (en)
CN (1) CN1954104A (en)
BR (1) BRPI0508907A (en)
DE (1) DE502005004191D1 (en)
WO (1) WO2005087994A1 (en)

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US7738015B2 (en) 1997-10-09 2010-06-15 Fotonation Vision Limited Red-eye filter method and apparatus
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US7748084B2 (en) 2006-02-03 2010-07-06 Truetzschler Gmbh & Co. Kg Apparatus on a textile machine for cleaning fibre material, for example of cotton, having a high-speed first or main roller
US7804531B2 (en) 1997-10-09 2010-09-28 Fotonation Vision Limited Detecting red eye filter and apparatus using meta-data
US7865036B2 (en) 2005-11-18 2011-01-04 Tessera Technologies Ireland Limited Method and apparatus of correcting hybrid flash artifacts in digital images
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US7804531B2 (en) 1997-10-09 2010-09-28 Fotonation Vision Limited Detecting red eye filter and apparatus using meta-data
US8203621B2 (en) 1997-10-09 2012-06-19 DigitalOptics Corporation Europe Limited Red-eye filter method and apparatus
US7738015B2 (en) 1997-10-09 2010-06-15 Fotonation Vision Limited Red-eye filter method and apparatus
US7746385B2 (en) 1997-10-09 2010-06-29 Fotonation Vision Limited Red-eye filter method and apparatus
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US7847839B2 (en) 1997-10-09 2010-12-07 Fotonation Vision Limited Detecting red eye filter and apparatus using meta-data
US7847840B2 (en) 1997-10-09 2010-12-07 Fotonation Vision Limited Detecting red eye filter and apparatus using meta-data
US7787022B2 (en) 1997-10-09 2010-08-31 Fotonation Vision Limited Red-eye filter method and apparatus
US8126208B2 (en) 2003-06-26 2012-02-28 DigitalOptics Corporation Europe Limited Digital image processing using face detection information
US8224108B2 (en) 2003-06-26 2012-07-17 DigitalOptics Corporation Europe Limited Digital image processing using face detection information
US8131016B2 (en) 2003-06-26 2012-03-06 DigitalOptics Corporation Europe Limited Digital image processing using face detection information
US8520093B2 (en) 2003-08-05 2013-08-27 DigitalOptics Corporation Europe Limited Face tracker and partial face tracker for red-eye filter method and apparatus
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EP1733080A1 (en) 2006-12-20
CN1954104A (en) 2007-04-25
EP1733080B1 (en) 2008-05-21
DE502005004191D1 (en) 2008-07-03
BRPI0508907A (en) 2007-08-07

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