CN101249909B - Paper multi-feed detection apparatus and paper multi-feed detection method - Google Patents
Paper multi-feed detection apparatus and paper multi-feed detection method Download PDFInfo
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- CN101249909B CN101249909B CN2008100082383A CN200810008238A CN101249909B CN 101249909 B CN101249909 B CN 101249909B CN 2008100082383 A CN2008100082383 A CN 2008100082383A CN 200810008238 A CN200810008238 A CN 200810008238A CN 101249909 B CN101249909 B CN 101249909B
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- super sonic
- paper class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
- B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
- B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
- B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/60—Other elements in face contact with handled material
- B65H2404/61—Longitudinally-extending strips, tubes, plates, or wires
- B65H2404/611—Longitudinally-extending strips, tubes, plates, or wires arranged to form a channel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/52—Defective operating conditions
- B65H2511/524—Multiple articles, e.g. double feed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/82—Sound; Noise
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/30—Sensing or detecting means using acoustic or ultrasonic elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
- B65H2701/1912—Banknotes, bills and cheques or the like
Abstract
A paper multi-feed detection apparatus and a paper multi-feed detection method are provided for preventing the detection capability from being deteriorated by a noise factor and improving the detection precision even where an area around the feeding path has no extra space in terms of the shape and there are many noise-generating factors because of a demand for a smaller size of the device. An ultrasonic transmission opening formed in one of two feeding guide plates is large so as to discharge outside a reflected wave which returns through the ultrasonic transmission opening, and an ultrasonic receiving opening formed in the other feeding guide plate is smaller than a receiving face area of a receiver for receiving the ultrasonic wave.
Description
Technical field
The present invention relates to the overlapping transmission check implement of paper class suitable in the office automation instruments such as duplicator, scanner, specify for, relate to the overlapping transmission check implement of paper class and the overlapping transmission method of inspection of paper class that can correctly detect when transmitting in that paper classes such as paper, bank note, exchange ticket, figure book token, little stamp, card are overlapping.
Background technology
In recent years, as the check implement of the overlapping transmission of easily overlapping paper class, for example thin paper etc., the overlapping transmission check implement of paper class of ultrasonic transduter has appearred using.Use above-mentioned ultrasonic transduter to detect the paper time-like, can realize the distinctive detection performance of following super sonic.
(1) adopts the contactless method that does not contact to detect, can not hinder the paper class to transmit with the paper class.
(2) can detect the paper class of any thickness, therefore,, also can detect even mix overlapping transmission for the paper class of different-thickness.
(3) detection is not influenced by paper class color, therefore, even paper class color changes, need not to readjust yet.
Figure 4 shows that an example of the overlapping transmission check implement of paper class that has used ultrasonic transduter with above-mentioned feature.The overlapping transmission check implement of this paper class, the upper surface side that transmits the drive access 42 of paper class 41 at plane earth is provided with the projector 44 of setting the ultrasonic transduter 43 of transmit-receive position with certain angle of inclination, is provided with receptor 45 in lower face side.
But when super sonic 46 incides on the paper class 41, a part of super sonic 46 will be reflected by paper, thereby this backward wave can produce diffuser reflection in transmitting space 42a.For example, curling appears in transmitting space 42a in paper class 41 sometimes, if super sonic incides on the above-mentioned curling paper class 41, will produce diffuser reflection.If above-mentioned irreflexive backward wave is received device 45 as interference component and receives, this interference component descends sensor performance, causes paper class 41 to be surveyed by flase drop.
In the above-mentioned patent documentation 1, by super sonic being incided method on the paper with certain angle of inclination, the volume reflection that has suppressed paper, and attempt to suppress the volume reflection of receptor receiving plane, but only, also be not enough to fully guarantee sensor performance by setting the ultrasonic transmission/reception direction with certain angle of inclination.
In addition, instruments such as duplicator require to be realized instrument miniaturization, so the configuration space of drive access periphery do not have much degree more than needed, and have a lot of factors that produce interference components.An example of the overlapping transmission check implement of other paper class for example, has been shown among Fig. 5.For the overlapping transmission check implement of above-mentioned paper class, there are circumferential component (reflecting object) 55 o'clock in the projector 53 that transmits drive access 52 upper surface side of paper class 51 from plane earth transmits the emitting area the directing plate 54 to the top periphery, will be received thereby be received device 56 by circumferential component 55 diffuser reflections from the backward wave of paper class 51 reflections as interference component.
For example, when having ultrasonic transduter and optical sensor simultaneously, if directing plate 54 is transmitted in the top or the sensor openings 58 that is used for optical sensor in the directing plate 57 by opening being provided with is transmitted in the below, when then transmitting paper class 51, before paper class 51 arrives sensor openings 58, the backward wave 59 that sees through the sensor opening 58 will directly arrive receptor 56, and this backward wave 59 will be added into as received signal.In addition, also have backward wave 60 from the peripheral space of receptor 56 and arrive at receptor 56, thereby cause harmful effect as interference component.
In addition, use sound absorption materials to surround ultrasonic emitting zone and receiving area from the projector to the receptor in addition, thereby absorb the overlapping transmission check implement (with reference to the special patent documentation 2 of opening 2005-82350 number) of the interference component that exterior interference component and backward wave cause respectively.
But this need use sound absorption materials that emitting area and receiving area are sealed, and has therefore limited the configuration shape, has reduced Design freedom, and the cost of ultrasonic transduter own is improved.
Summary of the invention
The object of the invention provides by the backward wave of effective eliminating as the hypracoustic interference component, prevents that the detection performance that interference component causes from descending, thereby improves the overlapping transmission check implement of paper class and the overlapping transmission method of inspection of paper class of accuracy of detection.
The invention provides the overlapping transmission check implement of a kind of paper class, it is characterized in that this check implement has drive access, the transmission directing plate that this drive access is oppositely arranged by transmitting the transmission space of paper class across plane earth is covered; Be provided with the projector of ultrasonic transduter in above-mentioned drive access one side, opposite side is provided with the receptor of ultrasonic transduter, makes above-mentioned projector relative with receptor; Above-mentioned projector is by from transmitting the entrance port that forms by opening on the directing plate to above-mentioned transmission space incident super sonic in a side, and above-mentioned receptor receives from transmit the super sonic of outgoing the exit portal that forms by opening on the directing plate at opposite side; Paper class hypracoustic dampening information and overlapping transmission detection threshold by between above-mentioned projector and the receptor time are compared, the overlapping transmission phenomenon of paper class whether occurs thereby detect; Wherein, the opening of above-mentioned entrance port is provided with very greatly, can get rid of backward wave, and the backward wave that will become incident hypracoustic interference component spills into the outside; The opening of above-mentioned exit portal is provided with less than the receiver area that receives the ultrasonic reception device and greater than half of described receiver area.
Wherein, the periphery in the ultrasonic emitting zone from above-mentioned projector to the entrance port is arranged to open state, and the periphery of the super sonic receiving area from above-mentioned exit portal to receptor is then with disturbing the blocking-up wall to cover.
The invention provides the overlapping transmission method of inspection of a kind of paper class, it is characterized in that, this method of inspection may further comprise the steps: send super sonic to receptor from the projector of the ultrasonic transduter that is oppositely arranged across paper class drive access, this super sonic is by covering the transmission directing plate incident of ultrasonic emitting area side, the entrance port opening is provided with very greatly, thereby make this entrance port can get rid of backward wave, corresponding therewith, super sonic is by covering the transmission directing plate outgoing of super sonic receiving area side, the size of exit portal is provided with less than the receiver area of receptor and greater than half of described receiver area, sends and receive super sonic thus.
According to the present invention, can get rid of the interference component that produces during super sonic in emission, thereby guarantee stable emitting performance, can effectively prevent the interference component of when receiving super sonic, sneaking into easily, thereby improve receptivity.Particularly, need not to add new parts just can construct under the configuration space of the drive access periphery condition of spending not more than needed simply and easily.
Description of drawings
Fig. 1 is the work scheme drawing that the hanging togother that relates to of explanation embodiment 1 transmits the detected state of check implement.
Fig. 2 is assembled into the control circuit module figure that hanging togother that embodiment 1 relates to transmits the ultrasonic transduter of check implement.
Fig. 3 is the work scheme drawing that the hanging togother that relates to of explanation embodiment 2 transmits the detected state of check implement.
Fig. 4 illustrates the work scheme drawing of the detected state of the overlapping transmission check implement of paper class in the past.
Fig. 5 is the another kind of work scheme drawing of the detected state of the overlapping transmission check implement of paper class in the past of explanation.
Reference numeral
11,31: hanging togother transmits check implement, 13,33: drive access, 14,15,34,35: transmit directing plate, 16,36: ultrasonic transduter, 17,37: projector, 18,38: receptor, 19,39: entrance port, 20,40: exit portal, 38a: disturb the blocking-up wall, U: super sonic, R: backward wave.
The specific embodiment
Embodiment 1
Describe the 1st embodiment of the present invention in detail below in conjunction with accompanying drawing.
Accompanying drawing is depicted as the built-in hanging togother of duplicator and transmits check implement, and as shown in Figure 1, above-mentioned hanging togother transmits check implement 11 and is provided with the drive access 13 that the along continuous straight runs plane earth transmits paper P at the upside of apparatus body 12.The below that above-mentioned drive access 13 transmits directing plate 14 and downside by the top of the upside that is oppositely arranged across the transmission space 13a on plane transmit directing plate 15 these two transmit 14,15 coverings of directing plates.
In addition, the top of above-mentioned drive access 13 is provided with the projector 17 of ultrasonic transduter 16, and the below is provided with the receptor 18 of ultrasonic transduter 16, makes above-mentioned projector 17 and receptor 18 across above-mentioned drive access 13 and relative.Above-mentioned ultrasonic transduter 16 has been set with certain angle of inclination and has been transmitted and received direction, the configuration that has adopted suitable super sonic U to transmit and receive.
In addition, with the downrange of above-mentioned projector 17 on emitted wave intersect above-mentioned above transmit on the crossover location of directing plate 14 and be provided with entrance port 19 by opening.The opening of this entrance port 19 is provided with very greatly, thereby can get rid of backward wave, makes the backward wave R that becomes interference component from projector 17 after the super sonic U that transmits space 13a incident is by paper P reflection spill into the outside.For example, can be benchmark with the center of the emitting area of projector 17, form circular open, in the scope that does not influence conveying function, enlarged opening size as far as possible, thus avoid the multipath reflection phenomenon, promptly, can make super sonic incide the backward wave R that upwards reflects at a certain angle behind the paper P upper surface and not run into top transmission directing plate 14, thereby can not turn back downwards once more, can not cause multipath reflection.
Corresponding therewith, with the receive direction of above-mentioned receptor 18 on the reception ripple intersects above-mentioned below be provided with exit portal 20 by opening on the crossover location of transmission directing plate 15.The opening of this exit portal 20 is provided with less than receiving from transmitting the area of space 13a to receiving plane (receiving sensor head) 18a of the receptor 18 of the super sonic U of receptor 18 outgoing.Like this, exit portal 20 is limited lessly, thus with super sonic U by region limits at a certain size.Therefore, interference component is difficult to enter receiving plane 18a, makes receptor 18 can stably receive super sonic U.Preferably, the opening that makes this exit portal 20 is identical substantially with the area of the receiving plane 18a of receptor 18 or less than the area of this receiving plane 18a, thereby prevent that interference component from entering, in addition, the opening that guarantees this exit portal 20 is greater than half of the area of receiving plane 18a, thereby makes it can keep receptivity.
Figure 2 shows that and be assembled into the control circuit module figure that hanging togother transmits the ultrasonic transduter 16 of check implement 11, this ultrasonic transduter 16 comprises: signal (for example, the amplifying circuit 22 of the signal of start-oscillation circuit 21 220KHz) and the above-mentioned certain frequency of amplification that produces certain frequency in emitting side.
In addition, this ultrasonic transduter 16 also comprises: get rid of the filter of interference component and the amplifying circuit 23 of the signal that amplification is received at receiver side; Amplifying signal is carried out the rectifying circuit 24 of detection; Compare the signal and the decision circuit 25 of a reference value that are received to judge.
After being amplified to certain value from the electric signal of the certain frequency of above-mentioned start-oscillation circuit 21 outputs by amplifying circuit 22, be input to projector 17, convert super sonic U to by the piezoelectric elements in this projector 17.To launch to receptor 18 by being sent to the paper P in the drive access 13 by this super sonic U that is converted to.17 ultrasonic waves transmitted U meet the paper P of transmission in drive access 13 from projector, thereby the part of this super sonic U is reflected.The super sonic U that sees through paper P will be received device 18 and receive, and after the piezoelectric element by receptor 18 converts electric signal to, be input to acceptor circuit.Because it is different to transmit the ultrasonic attenuation degree that a piece of paper opens P and transmit plurality of sheets of paper when opening P, decision circuit 25 just can be judged the overlapping transmission whether paper P has taken place by comparison hypracoustic transit dose and a reference value (threshold value).Above-mentioned testing result will send to the upper control part of instruments such as duplicator.
Below, with reference to work scheme drawing shown in Figure 1, the detected state that hanging togother is transmitted check implement 11 is elaborated.
The projector 17 of ultrasonic transduter 16 is to the downrange emission super sonic U of oblique below.This ultrasonic waves transmitted U transmits the entrance port 19 that forms by opening on the directing plate 14 by the top and incides the interior transmission space 13a of drive access 13, this ultrasonic waves transmitted U passes through the paper P here, at this moment, the part of super sonic U is reflected by the upper surface of paper P, but because the opening of entrance port 19 is bigger, the super sonic U that is reflected can not run into the top and transmit directing plate 14, thereby this super sonic U that is reflected directly is reflected to the outside as backward wave.Like this, this backward wave just multipath reflection can not occur, thereby can not become interference component.
On the other hand, the super sonic U that also sees through paper P along the downrange direct projection will be received device 18 receptions, and its quantities received will be subjected to respect to seeing through the restriction of direction with the exit portal 20 of smaller opening setting.At this moment, because exit portal 20 is less, the throughput of super sonic U is limited in the scope that is fit to receive, therefore, interference component is difficult to enter receptor 18, makes receptor 18 can stably receive the super sonic U of appropriate amount.
In addition, receptor 18 will detect according to the hypracoustic result of determination information that is received and transmit 1 or many overlapping transmission.Only transmit 1 if detect, just can confirm as normal transmission.On the contrary, if detect overlapping transmission phenomenon, with the spurious signal of output abnormality transmission.
As mentioned above, transmit use ultrasonic transduter 16 in the check implement 11, only, just the backward wave that becomes interference component can be rejected to the outside by strengthening the openings of sizes of super sonic entrance port 19 at hanging togother.In addition, only, just can prevent that interference component from entering, thereby improve receptivity by reducing to receive the hypracoustic exit portal.Therefore, only, just can significantly improve the super sonic performance by changing the size of entrance port 19 and exit portal 20.
Figure 3 shows that another kind of hanging togother transmits the embodiment of check implement 31, the overlapping transmission check implement 31 of above-mentioned copy paper is provided with the drive access 33 that the along continuous straight runs plane earth transmits paper P at the upside of apparatus body 32.The below that above-mentioned drive access 33 transmits directing plate 34 and downside by the top of the upside that is oppositely arranged across the transmission space 33a on plane transmit directing plate 35 these two transmit 34,35 coverings of directing plates.
In addition, the top of above-mentioned drive access 33 is provided with the projector 37 of ultrasonic transduter 36, and the below is provided with the receptor 38 of ultrasonic transduter 36, makes above-mentioned projector 37 and receptor 38 across above-mentioned drive access 33 and relative.Above-mentioned ultrasonic transduter 36 has been set with certain angle of inclination and has been transmitted and received direction, the configuration that has adopted suitable super sonic U to transmit and receive.
In addition, with the downrange of above-mentioned projector 37 on emitted wave intersect above-mentioned above transmit on the crossover location of directing plate 34 and be provided with entrance port 39 by opening.In addition, the periphery from this projector 37 ultrasonic emitting zone of 39 to the entrance port is set to open state.Like this, when incide from projector 37 transmit space 33a super sonic U by paper P reflex time because the periphery in ultrasonic emitting zone is in open state, therefore the backward wave R that becomes interference component can be rejected to the outside.Thereby, can avoid the multipath reflection phenomenon of ultrasonic emitting area peripheral edge.
In addition, with the receive direction of above-mentioned receptor 38 on the reception phase of wave intersect above-mentioned below transmit on the crossover location of directing plate 35 and be provided with exit portal 40 by opening.In addition, the periphery in 38 the super sonic receiving area from exit portal 40 to receptor has covered cylindric interference blocking-up wall 38a.So just can form and to prevent that exterior external disturbance R1 and backward wave R from arriving the partition-type structures of receptor 38.Therefore, disturb and be difficult to enter receptor 38, thereby make receptor 38 can stably receive super sonic U.
The corresponding relation of the present invention and the foregoing description is: the overlapping transmission check implement of paper class of the present invention transmits check implement 11,31 corresponding to the hanging togother among the embodiment; The paper class is corresponding to paper P; One side transmits directing plate and transmits directing plate 14 corresponding to the top; Opposite side transmits directing plate and transmits directing plate 15 corresponding to the below, and the present invention can use based on the technological thought shown in claims, is not limited to structure shown in the foregoing description.
Claims (3)
1. the overlapping transmission check implement of paper class is characterized in that this check implement has drive access, and the transmission directing plate that this drive access is oppositely arranged by transmitting the transmission space of paper class across plane earth is covered; Be provided with the projector of ultrasonic transduter in above-mentioned drive access one side, be provided with the receptor of ultrasonic transduter, make above-mentioned projector relative with receptor at the opposite side of this drive access; Above-mentioned projector is from transmitting the entrance port that forms by opening on the directing plate to above-mentioned transmission space incident super sonic in a side; Above-mentioned receptor receives from transmitting the super sonic of outgoing the exit portal that forms by opening on the directing plate at opposite side; To work as paper class hypracoustic dampening information and overlapping transmission detection threshold by between above-mentioned projector and the receptor time and compare, the overlapping transmission phenomenon of paper class whether occur thereby detect; Wherein, the opening of above-mentioned entrance port is provided with very greatly, and the backward wave that can get rid of backward wave and will become incident hypracoustic interference component spills into the outside; The opening of above-mentioned exit portal is provided with less than the receiver area that receives the described receptor of hypracoustic and greater than half of described receiver area.
2. the overlapping transmission check implement of paper class according to claim 1, wherein, the periphery in the ultrasonic emitting zone from above-mentioned projector to the entrance port is arranged to open state, and the periphery of the super sonic receiving area from above-mentioned exit portal to receptor is then with disturbing the blocking-up wall to cover.
3. overlapping transmission method of inspection of paper class, it is characterized in that, this method may further comprise the steps: send super sonic to receptor from the projector of the ultrasonic transduter that is oppositely arranged across paper class drive access, this super sonic is by covering the transmission directing plate incident of ultrasonic emitting area side, the opening of entrance port is provided with very greatly, thereby make this entrance port can get rid of backward wave, corresponding therewith, super sonic is by covering the transmission directing plate outgoing of super sonic receiving area side, the size of exit portal is provided with less than the receiver area of receptor and greater than half of described receiver area, sends and receive super sonic thus.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-043258 | 2007-02-23 | ||
| JP2007043258A JP4812114B2 (en) | 2007-02-23 | 2007-02-23 | Paper sheet multi-feed detection device and paper multi-feed detection method |
| JP2007043258 | 2007-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101249909A CN101249909A (en) | 2008-08-27 |
| CN101249909B true CN101249909B (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100082383A Expired - Fee Related CN101249909B (en) | 2007-02-23 | 2008-02-14 | Paper multi-feed detection apparatus and paper multi-feed detection method |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20080203654A1 (en) |
| JP (1) | JP4812114B2 (en) |
| CN (1) | CN101249909B (en) |
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| US7025348B2 (en) * | 2002-11-25 | 2006-04-11 | Eastman Kodak Company | Method and apparatus for detection of multiple documents in a document scanner using multiple ultrasonic sensors |
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| JP4377666B2 (en) * | 2003-12-04 | 2009-12-02 | ニスカ株式会社 | Sheet feeding apparatus and image reading apparatus |
| JP2005162424A (en) * | 2003-12-04 | 2005-06-23 | Nisca Corp | Sheet feeding device and image reading device using this |
| JP4381133B2 (en) * | 2003-12-24 | 2009-12-09 | ニスカ株式会社 | Sheet feeding apparatus and image reading apparatus using the same |
| JP4451724B2 (en) * | 2004-06-08 | 2010-04-14 | ニスカ株式会社 | Paper feeding device and double feed detection abnormality determination method |
| DE102005026200A1 (en) * | 2005-06-07 | 2006-12-21 | Pepperl + Fuchs Gmbh | Detection and device for the detection of recording media |
| JP4173160B2 (en) * | 2005-12-19 | 2008-10-29 | シャープ株式会社 | Image forming apparatus and sheet control method |
| JP4410212B2 (en) * | 2006-04-07 | 2010-02-03 | シャープ株式会社 | Paper transport device |
| JP2008100783A (en) * | 2006-10-17 | 2008-05-01 | Canon Electronics Inc | Device for detecting double feeding of sheet-like member |
-
2007
- 2007-02-23 JP JP2007043258A patent/JP4812114B2/en active Active
-
2008
- 2008-02-14 CN CN2008100082383A patent/CN101249909B/en not_active Expired - Fee Related
- 2008-02-22 US US12/035,934 patent/US20080203654A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP4812114B2 (en) | 2011-11-09 |
| CN101249909A (en) | 2008-08-27 |
| JP2008207885A (en) | 2008-09-11 |
| US20080203654A1 (en) | 2008-08-28 |
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