CA1239702A - Obstructed-field-indicia-sensing device - Google Patents
Obstructed-field-indicia-sensing deviceInfo
- Publication number
- CA1239702A CA1239702A CA000494429A CA494429A CA1239702A CA 1239702 A CA1239702 A CA 1239702A CA 000494429 A CA000494429 A CA 000494429A CA 494429 A CA494429 A CA 494429A CA 1239702 A CA1239702 A CA 1239702A
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- CA
- Canada
- Prior art keywords
- indicia
- register
- code
- predetermined
- pattern
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0081—Devices for scanning register marks
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Credit Cards Or The Like (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides an indicia detection apparatus for selectively detecting a predetermined register indicia on a moving web which is positioned within an encompass-ing field of indicia comprising: code indicia having a predeter-mined pattern and having a spacially fixed relationship on said web relative to said register indicia; indicia sensing means for sensing the spacial configuration of indicia lying along a longi-tudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for gen-erating a detection signal indicative of the spacial orientation of indicia in said longitudinally extending, indicia sensing path; data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corre-sponding to said code indicia and for selecting a portion of said detection signal for further processing based on the detection of said code indicia and the spacial relationship of said code indi-cia to said register indicia and for comparing said selected sig-nal portion with a second set of criteria for detecting a portion of said selected signal portion corresponding to said register indicia and registering the detection of said register indicia.
The present invention provides an indicia detection apparatus for selectively detecting a predetermined register indicia on a moving web which is positioned within an encompass-ing field of indicia comprising: code indicia having a predeter-mined pattern and having a spacially fixed relationship on said web relative to said register indicia; indicia sensing means for sensing the spacial configuration of indicia lying along a longi-tudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for gen-erating a detection signal indicative of the spacial orientation of indicia in said longitudinally extending, indicia sensing path; data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corre-sponding to said code indicia and for selecting a portion of said detection signal for further processing based on the detection of said code indicia and the spacial relationship of said code indi-cia to said register indicia and for comparing said selected sig-nal portion with a second set of criteria for detecting a portion of said selected signal portion corresponding to said register indicia and registering the detection of said register indicia.
Description
OBSTRUCTED FIELD-INDICIA-SENSING DEVICE
The present invention relates generally to indicia-sensing apparatus for sensing the relative position of reprinted indicia on a moving web of material and, more particularly, to an indioia-sensing device for detecting predetermined register indicia on a moving film web having an obstructing field of indicia positioned about the register indicia.
The use of composite material in packaging applications has met with a growing acceptance in the past few years because of high strength, low cost, and other characteristics which melee it superior to con-ventional paper board or cardboard in many applications.
A typical composite may have a thin layer of plastic film adhered to a relatively thicker layer of paper board material. A method of producing such a composite material it described in US. Patent No 4,254,173 issued Match 3, 1981, for COMPOSITE MATERIAL FOR SECONDARY
CONTAINER PACKAGING of A. Dean Peer, Jr.
During high speed production of composite material such as the type described in the Peer patent, a continuously moving web of paper board material is adhered to a continuously moving web of plastic film material at a relatively high speed. During such high speed laminating operations, the relatively thin plastic web is subject to a number of conditions which may cause it to shrink or expand prior to lamination with the paper Jo .
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The present invention relates generally to indicia-sensing apparatus for sensing the relative position of reprinted indicia on a moving web of material and, more particularly, to an indioia-sensing device for detecting predetermined register indicia on a moving film web having an obstructing field of indicia positioned about the register indicia.
The use of composite material in packaging applications has met with a growing acceptance in the past few years because of high strength, low cost, and other characteristics which melee it superior to con-ventional paper board or cardboard in many applications.
A typical composite may have a thin layer of plastic film adhered to a relatively thicker layer of paper board material. A method of producing such a composite material it described in US. Patent No 4,254,173 issued Match 3, 1981, for COMPOSITE MATERIAL FOR SECONDARY
CONTAINER PACKAGING of A. Dean Peer, Jr.
During high speed production of composite material such as the type described in the Peer patent, a continuously moving web of paper board material is adhered to a continuously moving web of plastic film material at a relatively high speed. During such high speed laminating operations, the relatively thin plastic web is subject to a number of conditions which may cause it to shrink or expand prior to lamination with the paper Jo .
I- i '` I
k} h I, I, I
-2-rod web. Composite material used for packaging may ha a repeating sex of graphic pruned on the plastic em web; and, thus, it is ess2~tial to control the stretch or relaxation in the plastic film web on order to provide a composite material having graphics ox an exalt, predetermined dimension. The method and apparatus for controlling the longitudinal dimension of each repeating set of graphic on a moving film web are described in US. Patent No. 4,496,417, for CONTROL
10 STRETCH LAMINATING DEVICE of Hake, Fowled, and Jensen.
As disclosed in the Hake I*, aye. US. Patent, an essential part of a film-stretch-con~rol apparatus it a monitoring device which monitors the passage of certain fixed indicia on the film web which Are located at a pxedeterm~ned position on each repeat length of the film web. the indicia in the Hake et at. application are tensed by high peed photo01~Gtric devices; and a monitoring signal therefrom is prosody my a high speed data processing device which also receive a signal indicating the film web velocity and, from these two bits of information, computes the distance between the predetermined indicia. Tic information is subsequently used to relatively stretch or syrinx the film prior to lamination to thy paper board in order to provide a compute material having graphic of a precise size and repeat length. The indicia printed on the film web described in awoke et at. move along a photoelectric canner path which it otherwise free of indicia which would disturb the light beam of the photoelectric skinnier i.e., there ax no other Indira positioned on the web a to interject a straight line drawn between any pair of the length-indica~ing ~ndicia ox thy f lo web.
In many application wherein a jet ox graphic occupies the err width of the film web, us an unobstructed path for the photoelectric ~nsora cannot be provided thou adding an additional width of material ,, ,"
. ., ~.~23~
which must be subsequently trimmed off the composite web a a significant increase in time and expense Thus, it would be desirable to provide a method and apparatus for detecting predetermined indicia within an obstructed field of indicia on a moving film web in order to monitor film web distortion or to provide other data relating to the moving film web Such apparatus might be used in a similar fashion in any application wherein the recording or registering of predetermined indicia on a moving web is desired and wherein the predetermined indicia are positioned within an obstructing field of indicia.
The present invention includes an indicia detection apparatus for selectively detecting a predator-mined register indicia on a moving web which is positioned within an encompassing field of indicia comprising code indicia having a predetermined pattern and having a specially fixed relationship on said web relative to said register indicia; indicia sensing means for sensing the special configuration of indicia lying along a longitudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for generating a detection signal indicative of the special orientation of indicia in said longitudinally extending, indicia sensing path, data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corresponding to said coo indicia and for select-in a portion of said detection signal for further processing base on the detection of said code indicia and the special relationship of said code indicia to said register indicia and for comparing said selected ; signal portion with a second set of criteria for detect-US in a portion of said selected signal portion correspond-in to said register indicia and registering the detection of said register indicia.
I
The present invention also includes a method of detecting a predetermined register induce pattern on a moving web which is positioned within an Encompass-in yield of indicia, a portion of s id encompassing field having a predetermined code indicia pattern positioned in predetermined special relationship to said register indicia pattern, comprising the steps of continuously monitoring a longitudinally extending code track on said web containing said predetermined code Lo indicia pattern; comparing special relationships of indicia detected on said code track during monitoring with a predetermined model corresponding to said code indicia pattern until said code pattern is detected;
selecting a short length portion of a longitudinally extending register track on said web containing said register indicia pattern, based upon the detection of said code indicia pattern; monitoring said selected portion of said longitudinally extending register path;
comparing special indicia patterns dejected on said register path with a predetermined model corresponding to said register indicia pattern until said register indicia pattern is detected.
The present invention also includes a method of detecting a predetermined register indicia pattern on a moving web positioned within an encompassing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern, comprising the reps of continuously monitoring the passage of indicia within a longitudinally extending cove path with a : 3Q monitoring unit sensitive to all indicia in said code path, said code path including said code indicia pattern;
comparing indicia patterns in said code path with a : first set of predetermined criteria corresponding to said code indicia pattern for detecting the passage of said code indicia pattern; monitoring the passage ox ~ndicia within a longitudinally extending register path for a predetermined interval with a monitoring unit son itive I
to all indicia in said register path, said r sister path including said register indicia pattern r said predator-mined monitoring interval being initiated in response to detecting the passage of said code indicia pattern;
comparing the indicia in said register path detected during said predetermined interval with a second pro-ruined set of criteria corresponding to said register indicia for detecting the passage of said resister indicia; and recording the passage of said register indicia.
The present invention also includes a method of detecting a predetermined register indicia pattern on a moving web which is positioned within an encom-passing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern, comprising the steps of continuously comparing the indicia in a first longitudinally extending path with a first predetermined set of criteria corre~ondiny to characteristics of said code indicia pattern and generating a first signal indicating the passage of each set of indicia meeting said first predetermined set of criteria; continuously comparing the indicia in a second Longitudinally extending path with a second predetermined set of criteria cQrrespo~fl.~n~ tug characteristics of said register indicia pattern and generating a second signal indicating the passage ox each set of indicia meeting said second predetermined set of criteria; comparing said first signal with said second signal for detecting the occurrence of a code indicia pattern indication in said first signal and a register indicia pattern indication in said second signal within a predetermined interval; and registering the passage of a register indicia pattern whenever said comparison of signals indicates the occurrence of a register indicia pattern and a sore indicia pattern within said predetermined interval Fig. 1 is a plan view of an indicia detection apparatus being used to detect indicia on a moving film web.
Fig. lo is an elevation view of a portion of Fig 1.
Fig. 2 is another embodiment of an indicia detection apparatus.
Fig. 3 is a detail of a portion of the moving web shown in Fig. 2.
Fig. 4 is another embodiment of an indicia detection apparatus.
Fig 5 is a flow chart of one method of operating a detection apparatus for detecting predator-mined indicia in an obstructed field.
Fig. 6 is a flow chart of another method of operating a detection apparatus for detecting predator-mined indicia in an obstructed field Fig. 7 is a flow chart of another method of operating a detection apparatus for detecting predator-mined Indiana in an obstructed field I One preferred embodiment of the invention, which is presently the best mode contemplated, is illustrated in Fig. 1. A moving film web 10 having repeating sets ox graphics provided on associated repeat-in length portions 11, 13 etc.- of the web comprises 25 a register indicia pattern positioned at the same relative location within each repeat Length 11, 13 etc.
In the embodiment illustrated in Fig r 1, the register indicia pattern comprises a single, transversely, extend-in mark 12 having a dimension measured longitudinally ox the web of a predetermined value "a" which may be, for example, one-eighth inch. Each repeat length also has a code indicia pattern positioned at the same relative location within each repeat length. In the embodiment of Fig. 1, the code indicia pattern comprises a single, transversely extending mark 14 having a predetermined, longitudinally measured dimension "b" which may be, for example, one-sixteenth inch. The register indicia pattern 12 and the code indicia pattern 14 within each repeat length are separated by a predetermined, long-twill Miss dip "c". the dusks I may be, for e~m~le, one inch. Other indicia 18, such as, for example, dip play graphic, quality control graphics and the like, may also be provided in repeating or random positions within each repeat length 11, 13, etc.
A first India tensing means, which in the embodiment of Fig. 1 comprise a register photoelectric 0 6en60r 20 is positioned a a fixed location relative to the moving film web whereat a relatively narrow width track 22 that it scanned by the photoelectric tenor 20 intersects a register indicia 12 on each succeeding repeat length 11, 13 etc. a the film web 10 progress in the direction indicated (from left to right on the sheet of drawling). A illustrated in Fig. lay the register photoelectric sensor 20 may comprise a conventional photoelectric sensor including a light source 28 positioned below the moving film web 10 or directing a narrow beam of light 29 through the film web to a light sensor 30. the light sensor 30 generate a signal based upon thy presence or absence of light from the light beam 29 which is periodically obstructed by the printed indicia on the film web 10.
25 Thus, a ire based signal i& generated which, when compared with a film velocity based signal, may be used o determine the exact location and longitudinal dimension of indicia pausing through the light beam, i.e., indicia positioned along path 22. A film velocity based signal may be generated by a conventional encoder 32 or "roto-pul~or" of the type de cried in the awoke et at. US. Patent No. 4,496,417. me encoder 32 nay be mounted to rollingly contact a roll 34 having a surface speed equal to that of the film web 10. Both the encoder 32 Reed based signal and the time based signal from the photoelectric senfiox 20, I are received and processed I
by processing means such a a conventional micro-prosier 36 of the type de~cxibed in Hake et at.
US. Patent No. 4,496,417. It is an runt feature of present invention that indicia other than the register 5 indiGia 12 may be prevent along path 22 without affect-lung the accuracy or operation of the apparatus.
A second indicia sensing mean in he embody-mint of Fig. 1 comprise a code photoelectric tenor 24 which may be of identical construction to the register photoelectric 6en~0r 20 and which sense all induce pro itioned along a longitudinally extending, code tensing track 26 parallel to the register snowing track 22. Code pho~ectric sensor 24 is positioned Jo a to interject each code indicia pattern 14 on the moving film web. Thus, the two photoelectric sensor 20, 24 comprise an Indira sensing jeans for sensing the poshly characteristic ox indiGia lying within a longitudinally extending, indicia awning path which, in turn, compare the register sensing track 22 an the code 6en~ing track 26.
On method of utilizing the apparatus shown in Fig. 1 to cause exclusive registration of the passage of register indicia patterns such as mark 12 it illustrated in Fig. 5. Photoelectric tenor 20 continue ouzel monitors the pudgy of all i~dicia along cod track 22 providing information regarding the longitudinal dimension of each set of i.ndicia end and also the longitudinal spacing between the sensed indicia in a code-trac~c-indicia-detection signal. Photoelectric 30 sensor I simultaneously monitors the passage ox all indicia along code track 26 and peeved information regarding thy longitudinal dimension and spacing owe thy induce in a code-track indicla~d~t~ction ~lgnal.
Next, each of the! two Indiana indioa~ing 35 Signal it compared with a prude Monet he oaf model. They'll model my assent, with r~pec~ to the Jo register track detection signal, of the criteria that the indicia being examined must have a longitudinal dimension falling within a predetermined value range, erg., the criteria may be that the indicia must have a dimension less than Lola and greater than aye.
With respect to the code-track-detection signal, the criteria may be that the indicia must have a dimension less than lob and greater than 0.9b. By providing such tolerances mar irregularities which may be produced by variations in mark printing conditions will not effect the accuracy of the monitoring apparatus A
second set of signals is provided in response to each of these comparisons of the first set of signals with the respective mathematical models. The second set of signals generated indicates the relative position of indicia patterns conforming to the register indicia model. in the case of one signal and to the code indicia model in the case of the other signal. The second set of signals, i.e., the two pattern detection signals, is then compared. If a portion of the code-pattern-detection signal indicating the occurrence of a code pattern and a portion of the register-pattern~detection signal indicating the occurrence of a register pattern : both occur within a predetermined time span, i.e., in physical terms, if the code mark 12 and the register mark 14 are detected within a predetermined distance of each other, the relative position of the detected-register-indicia pattern is recorded, i.e., registered for further processing.
Thus, it may be seen from the foregoing example that three sets of criteria must be satisfied before a mark detected by the photo sensor 20 is recorded as a register indicia:
: I The mark must meet certain predetermined criteria Jo 35 regarding its longitudinal positioning. tin the preceding example, it must have a longitudinal dimension within 10 percent of the value ox "a".) 2. The mark must be within a predetermined longitudinal distance from a detected code mark.
10 STRETCH LAMINATING DEVICE of Hake, Fowled, and Jensen.
As disclosed in the Hake I*, aye. US. Patent, an essential part of a film-stretch-con~rol apparatus it a monitoring device which monitors the passage of certain fixed indicia on the film web which Are located at a pxedeterm~ned position on each repeat length of the film web. the indicia in the Hake et at. application are tensed by high peed photo01~Gtric devices; and a monitoring signal therefrom is prosody my a high speed data processing device which also receive a signal indicating the film web velocity and, from these two bits of information, computes the distance between the predetermined indicia. Tic information is subsequently used to relatively stretch or syrinx the film prior to lamination to thy paper board in order to provide a compute material having graphic of a precise size and repeat length. The indicia printed on the film web described in awoke et at. move along a photoelectric canner path which it otherwise free of indicia which would disturb the light beam of the photoelectric skinnier i.e., there ax no other Indira positioned on the web a to interject a straight line drawn between any pair of the length-indica~ing ~ndicia ox thy f lo web.
In many application wherein a jet ox graphic occupies the err width of the film web, us an unobstructed path for the photoelectric ~nsora cannot be provided thou adding an additional width of material ,, ,"
. ., ~.~23~
which must be subsequently trimmed off the composite web a a significant increase in time and expense Thus, it would be desirable to provide a method and apparatus for detecting predetermined indicia within an obstructed field of indicia on a moving film web in order to monitor film web distortion or to provide other data relating to the moving film web Such apparatus might be used in a similar fashion in any application wherein the recording or registering of predetermined indicia on a moving web is desired and wherein the predetermined indicia are positioned within an obstructing field of indicia.
The present invention includes an indicia detection apparatus for selectively detecting a predator-mined register indicia on a moving web which is positioned within an encompassing field of indicia comprising code indicia having a predetermined pattern and having a specially fixed relationship on said web relative to said register indicia; indicia sensing means for sensing the special configuration of indicia lying along a longitudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for generating a detection signal indicative of the special orientation of indicia in said longitudinally extending, indicia sensing path, data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corresponding to said coo indicia and for select-in a portion of said detection signal for further processing base on the detection of said code indicia and the special relationship of said code indicia to said register indicia and for comparing said selected ; signal portion with a second set of criteria for detect-US in a portion of said selected signal portion correspond-in to said register indicia and registering the detection of said register indicia.
I
The present invention also includes a method of detecting a predetermined register induce pattern on a moving web which is positioned within an Encompass-in yield of indicia, a portion of s id encompassing field having a predetermined code indicia pattern positioned in predetermined special relationship to said register indicia pattern, comprising the steps of continuously monitoring a longitudinally extending code track on said web containing said predetermined code Lo indicia pattern; comparing special relationships of indicia detected on said code track during monitoring with a predetermined model corresponding to said code indicia pattern until said code pattern is detected;
selecting a short length portion of a longitudinally extending register track on said web containing said register indicia pattern, based upon the detection of said code indicia pattern; monitoring said selected portion of said longitudinally extending register path;
comparing special indicia patterns dejected on said register path with a predetermined model corresponding to said register indicia pattern until said register indicia pattern is detected.
The present invention also includes a method of detecting a predetermined register indicia pattern on a moving web positioned within an encompassing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern, comprising the reps of continuously monitoring the passage of indicia within a longitudinally extending cove path with a : 3Q monitoring unit sensitive to all indicia in said code path, said code path including said code indicia pattern;
comparing indicia patterns in said code path with a : first set of predetermined criteria corresponding to said code indicia pattern for detecting the passage of said code indicia pattern; monitoring the passage ox ~ndicia within a longitudinally extending register path for a predetermined interval with a monitoring unit son itive I
to all indicia in said register path, said r sister path including said register indicia pattern r said predator-mined monitoring interval being initiated in response to detecting the passage of said code indicia pattern;
comparing the indicia in said register path detected during said predetermined interval with a second pro-ruined set of criteria corresponding to said register indicia for detecting the passage of said resister indicia; and recording the passage of said register indicia.
The present invention also includes a method of detecting a predetermined register indicia pattern on a moving web which is positioned within an encom-passing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern, comprising the steps of continuously comparing the indicia in a first longitudinally extending path with a first predetermined set of criteria corre~ondiny to characteristics of said code indicia pattern and generating a first signal indicating the passage of each set of indicia meeting said first predetermined set of criteria; continuously comparing the indicia in a second Longitudinally extending path with a second predetermined set of criteria cQrrespo~fl.~n~ tug characteristics of said register indicia pattern and generating a second signal indicating the passage ox each set of indicia meeting said second predetermined set of criteria; comparing said first signal with said second signal for detecting the occurrence of a code indicia pattern indication in said first signal and a register indicia pattern indication in said second signal within a predetermined interval; and registering the passage of a register indicia pattern whenever said comparison of signals indicates the occurrence of a register indicia pattern and a sore indicia pattern within said predetermined interval Fig. 1 is a plan view of an indicia detection apparatus being used to detect indicia on a moving film web.
Fig. lo is an elevation view of a portion of Fig 1.
Fig. 2 is another embodiment of an indicia detection apparatus.
Fig. 3 is a detail of a portion of the moving web shown in Fig. 2.
Fig. 4 is another embodiment of an indicia detection apparatus.
Fig 5 is a flow chart of one method of operating a detection apparatus for detecting predator-mined indicia in an obstructed field.
Fig. 6 is a flow chart of another method of operating a detection apparatus for detecting predator-mined indicia in an obstructed field Fig. 7 is a flow chart of another method of operating a detection apparatus for detecting predator-mined Indiana in an obstructed field I One preferred embodiment of the invention, which is presently the best mode contemplated, is illustrated in Fig. 1. A moving film web 10 having repeating sets ox graphics provided on associated repeat-in length portions 11, 13 etc.- of the web comprises 25 a register indicia pattern positioned at the same relative location within each repeat Length 11, 13 etc.
In the embodiment illustrated in Fig r 1, the register indicia pattern comprises a single, transversely, extend-in mark 12 having a dimension measured longitudinally ox the web of a predetermined value "a" which may be, for example, one-eighth inch. Each repeat length also has a code indicia pattern positioned at the same relative location within each repeat length. In the embodiment of Fig. 1, the code indicia pattern comprises a single, transversely extending mark 14 having a predetermined, longitudinally measured dimension "b" which may be, for example, one-sixteenth inch. The register indicia pattern 12 and the code indicia pattern 14 within each repeat length are separated by a predetermined, long-twill Miss dip "c". the dusks I may be, for e~m~le, one inch. Other indicia 18, such as, for example, dip play graphic, quality control graphics and the like, may also be provided in repeating or random positions within each repeat length 11, 13, etc.
A first India tensing means, which in the embodiment of Fig. 1 comprise a register photoelectric 0 6en60r 20 is positioned a a fixed location relative to the moving film web whereat a relatively narrow width track 22 that it scanned by the photoelectric tenor 20 intersects a register indicia 12 on each succeeding repeat length 11, 13 etc. a the film web 10 progress in the direction indicated (from left to right on the sheet of drawling). A illustrated in Fig. lay the register photoelectric sensor 20 may comprise a conventional photoelectric sensor including a light source 28 positioned below the moving film web 10 or directing a narrow beam of light 29 through the film web to a light sensor 30. the light sensor 30 generate a signal based upon thy presence or absence of light from the light beam 29 which is periodically obstructed by the printed indicia on the film web 10.
25 Thus, a ire based signal i& generated which, when compared with a film velocity based signal, may be used o determine the exact location and longitudinal dimension of indicia pausing through the light beam, i.e., indicia positioned along path 22. A film velocity based signal may be generated by a conventional encoder 32 or "roto-pul~or" of the type de cried in the awoke et at. US. Patent No. 4,496,417. me encoder 32 nay be mounted to rollingly contact a roll 34 having a surface speed equal to that of the film web 10. Both the encoder 32 Reed based signal and the time based signal from the photoelectric senfiox 20, I are received and processed I
by processing means such a a conventional micro-prosier 36 of the type de~cxibed in Hake et at.
US. Patent No. 4,496,417. It is an runt feature of present invention that indicia other than the register 5 indiGia 12 may be prevent along path 22 without affect-lung the accuracy or operation of the apparatus.
A second indicia sensing mean in he embody-mint of Fig. 1 comprise a code photoelectric tenor 24 which may be of identical construction to the register photoelectric 6en~0r 20 and which sense all induce pro itioned along a longitudinally extending, code tensing track 26 parallel to the register snowing track 22. Code pho~ectric sensor 24 is positioned Jo a to interject each code indicia pattern 14 on the moving film web. Thus, the two photoelectric sensor 20, 24 comprise an Indira sensing jeans for sensing the poshly characteristic ox indiGia lying within a longitudinally extending, indicia awning path which, in turn, compare the register sensing track 22 an the code 6en~ing track 26.
On method of utilizing the apparatus shown in Fig. 1 to cause exclusive registration of the passage of register indicia patterns such as mark 12 it illustrated in Fig. 5. Photoelectric tenor 20 continue ouzel monitors the pudgy of all i~dicia along cod track 22 providing information regarding the longitudinal dimension of each set of i.ndicia end and also the longitudinal spacing between the sensed indicia in a code-trac~c-indicia-detection signal. Photoelectric 30 sensor I simultaneously monitors the passage ox all indicia along code track 26 and peeved information regarding thy longitudinal dimension and spacing owe thy induce in a code-track indicla~d~t~ction ~lgnal.
Next, each of the! two Indiana indioa~ing 35 Signal it compared with a prude Monet he oaf model. They'll model my assent, with r~pec~ to the Jo register track detection signal, of the criteria that the indicia being examined must have a longitudinal dimension falling within a predetermined value range, erg., the criteria may be that the indicia must have a dimension less than Lola and greater than aye.
With respect to the code-track-detection signal, the criteria may be that the indicia must have a dimension less than lob and greater than 0.9b. By providing such tolerances mar irregularities which may be produced by variations in mark printing conditions will not effect the accuracy of the monitoring apparatus A
second set of signals is provided in response to each of these comparisons of the first set of signals with the respective mathematical models. The second set of signals generated indicates the relative position of indicia patterns conforming to the register indicia model. in the case of one signal and to the code indicia model in the case of the other signal. The second set of signals, i.e., the two pattern detection signals, is then compared. If a portion of the code-pattern-detection signal indicating the occurrence of a code pattern and a portion of the register-pattern~detection signal indicating the occurrence of a register pattern : both occur within a predetermined time span, i.e., in physical terms, if the code mark 12 and the register mark 14 are detected within a predetermined distance of each other, the relative position of the detected-register-indicia pattern is recorded, i.e., registered for further processing.
Thus, it may be seen from the foregoing example that three sets of criteria must be satisfied before a mark detected by the photo sensor 20 is recorded as a register indicia:
: I The mark must meet certain predetermined criteria Jo 35 regarding its longitudinal positioning. tin the preceding example, it must have a longitudinal dimension within 10 percent of the value ox "a".) 2. The mark must be within a predetermined longitudinal distance from a detected code mark.
3. The code mark must have been found to meet certain predetermined characteristics. (In the preceding example, it must have a longitudinally measured dimension within 10 percent of the glue by The probability of all three criteria being met simultaneously in a random occurrence is extremely low; and, thus the statistical probability of the apparatus' recording only the proper register marks 12 is extremely high.
Referring now to Fig. 2, it may be seen that, in another embodiment of the invention, a film web 40 having repeat lengths 41, 43 etc. is provided with a register indicia pattern which may be a single mark 42 having a longitudinally measured dimension "a". 'rho web is also provided with a code-indicia pattern I
which, in the illustrations of Figs. 2 and 3, comprises three bar portions 45, 47, 49 of the letter "B". The bars have longitudinally measured dimensions of by, by, by, respectively, and are separated by longitudinally measured distances of do, do, respectively. In this illustration, the register indicia pattern 42 and the code indicia pattern 44 are positioned so as to be intersected by a single, narrow-width-scanning track 52 of a photoelectric sensor 50 which may be of an identical construction to photoæensor 20 described with reference to Fig. lay the code indicia pattern and the pa register indicia pattern are separated by a distance "c". A randomly positioned indicia 48 from the surround-in indicia field may lie along path 52 between the register idea pattern 42 and the code indicia pattern OWE A register-indicia-pattern window 54 having a longitudinally measured dimension "x" is provided in a longitudinally bracketing relationship about the register indicia pattern 42 as will be described in further detail I ?.~
hereinafter. The register window 54 may begin at. a distance "y" from the upstream edge of the. code induce pattern 44. The gap between patterns 42, 44 it here designated by the numeral 56 AS illustrated by Fig. 6, the indicia monitoring apparatus of Fig 2 oppress by continuously monitoring a single detection path $2 and generating an indicia detection signal containing information as to the longitudinal dimension and longitudinal spacing of indicia detected by the photoelectric sensor 50~
Next, the indicia detection signal is compared with a mathematical model of the code indicia pattern 44. In thus particular embodiment, the mathematical model consists of information including the longitudinal dimensions of each jet of indicia sensed and also the distance between indicia sensed Thus, for example, the mathematical model could require that the three indicia separated by distances equal to plus or minus 10 percent of do with respect to the first distance and plus or 2Q minus do with respect to the second distance be detected and further, thaw the dimensions of the three indicia detected lie within the value o9bl to lolbll .9h2 to lullaby and .9b3 to l lo respectively. After an indicia pattern conforming to the code-indicia-pattern model is I detected, all indicia within a predetermined window 54 positioned a redetermined distance "y" downstream of the detected-code-indiçia pattern are compared with a.
second mathematical model croup to the register indicia pattern. In this case, this may consist of the no cXiterlon that the longitudinal dimension be within lo percent of the value 'pa". It the inch sensed within the window 54 Anaheim to this value, they are then registered for further processing.
A illustrated by Fig. 4 in another embodiment of the invention, a moving film web 70 is provided with a series of register indicia patterns 72 at predetermined po6itiQns within repeat lengths 71, 73, 75, etch Each register indicia pattern 72 has an associated code ir~dicla pattern 74 position in longitudinally anal tran~vex~ely spaced-apart relationship f rum the Roget indicia pattern. The register indicia pattern 72 may comprise two marks AYE, 72B, each hazing a predetermined longitudinal dimension separated by a predetermined longitudinal distant e . Each of the code indicia patterns may also comprise two marks AYE, 74B having predetermined longitudinal dimensions and spacing. The register indicia pattern 72 is separated from the code indicia pattern 74 longitudinally by a predetermined distance. A register indicia window 78, as described in further detail below, brackets the register indicia 72 and is positioned at a predetermined longitudinal distance from the code indicia pattern 74.
Surrounding field indicia 80 may be positioned within the code sensing track 84 or register sensing track 89 defined by photoelectric code Tensor 82 and photo-electric register 86, respectively In this ~mhodiment I as illustrated in Fig. 7, the sequence of operations leading Jo registering of indicia pattern 72 may begin with continuously monitoring code track 84 and general-in a code-track-indicia-detection signal. The code-track-indicia detection signal it then compared with a model of the code indicia pattern based on criteria of, e.g., the dimensions of marks await 74B, and thy spacing there between. When a set of indicia it found to conform to this predetermined set of criteria, a command signal it generated to activate photo sensor 86 at a px~etermi~ed 3Q longitudinal distance from the point of detection of thy code indicia pattern. The photo sensor 86 monitors only a small length predetermined portion of path 88 before it it switched off providing an i~dicia detecting inlay. Indicia detected are compare with a second mathematical model with pry determined criteria based on , the characteristics of the register indicia, e.g., number of marks, spacing between marks, mark dimensions.
If the indicia detected by photoelectric sensor 86 conform to the mathematical model, then the position where this indicia pattern occurred is registered.
It is contemplated that the inventive concepts S herein described may be variously otherwise embodied and it is intended that the appended claims be con-trued to include alternative embodiments ox the invent lion except insofar as limited by the prior auto
Referring now to Fig. 2, it may be seen that, in another embodiment of the invention, a film web 40 having repeat lengths 41, 43 etc. is provided with a register indicia pattern which may be a single mark 42 having a longitudinally measured dimension "a". 'rho web is also provided with a code-indicia pattern I
which, in the illustrations of Figs. 2 and 3, comprises three bar portions 45, 47, 49 of the letter "B". The bars have longitudinally measured dimensions of by, by, by, respectively, and are separated by longitudinally measured distances of do, do, respectively. In this illustration, the register indicia pattern 42 and the code indicia pattern 44 are positioned so as to be intersected by a single, narrow-width-scanning track 52 of a photoelectric sensor 50 which may be of an identical construction to photoæensor 20 described with reference to Fig. lay the code indicia pattern and the pa register indicia pattern are separated by a distance "c". A randomly positioned indicia 48 from the surround-in indicia field may lie along path 52 between the register idea pattern 42 and the code indicia pattern OWE A register-indicia-pattern window 54 having a longitudinally measured dimension "x" is provided in a longitudinally bracketing relationship about the register indicia pattern 42 as will be described in further detail I ?.~
hereinafter. The register window 54 may begin at. a distance "y" from the upstream edge of the. code induce pattern 44. The gap between patterns 42, 44 it here designated by the numeral 56 AS illustrated by Fig. 6, the indicia monitoring apparatus of Fig 2 oppress by continuously monitoring a single detection path $2 and generating an indicia detection signal containing information as to the longitudinal dimension and longitudinal spacing of indicia detected by the photoelectric sensor 50~
Next, the indicia detection signal is compared with a mathematical model of the code indicia pattern 44. In thus particular embodiment, the mathematical model consists of information including the longitudinal dimensions of each jet of indicia sensed and also the distance between indicia sensed Thus, for example, the mathematical model could require that the three indicia separated by distances equal to plus or minus 10 percent of do with respect to the first distance and plus or 2Q minus do with respect to the second distance be detected and further, thaw the dimensions of the three indicia detected lie within the value o9bl to lolbll .9h2 to lullaby and .9b3 to l lo respectively. After an indicia pattern conforming to the code-indicia-pattern model is I detected, all indicia within a predetermined window 54 positioned a redetermined distance "y" downstream of the detected-code-indiçia pattern are compared with a.
second mathematical model croup to the register indicia pattern. In this case, this may consist of the no cXiterlon that the longitudinal dimension be within lo percent of the value 'pa". It the inch sensed within the window 54 Anaheim to this value, they are then registered for further processing.
A illustrated by Fig. 4 in another embodiment of the invention, a moving film web 70 is provided with a series of register indicia patterns 72 at predetermined po6itiQns within repeat lengths 71, 73, 75, etch Each register indicia pattern 72 has an associated code ir~dicla pattern 74 position in longitudinally anal tran~vex~ely spaced-apart relationship f rum the Roget indicia pattern. The register indicia pattern 72 may comprise two marks AYE, 72B, each hazing a predetermined longitudinal dimension separated by a predetermined longitudinal distant e . Each of the code indicia patterns may also comprise two marks AYE, 74B having predetermined longitudinal dimensions and spacing. The register indicia pattern 72 is separated from the code indicia pattern 74 longitudinally by a predetermined distance. A register indicia window 78, as described in further detail below, brackets the register indicia 72 and is positioned at a predetermined longitudinal distance from the code indicia pattern 74.
Surrounding field indicia 80 may be positioned within the code sensing track 84 or register sensing track 89 defined by photoelectric code Tensor 82 and photo-electric register 86, respectively In this ~mhodiment I as illustrated in Fig. 7, the sequence of operations leading Jo registering of indicia pattern 72 may begin with continuously monitoring code track 84 and general-in a code-track-indicia-detection signal. The code-track-indicia detection signal it then compared with a model of the code indicia pattern based on criteria of, e.g., the dimensions of marks await 74B, and thy spacing there between. When a set of indicia it found to conform to this predetermined set of criteria, a command signal it generated to activate photo sensor 86 at a px~etermi~ed 3Q longitudinal distance from the point of detection of thy code indicia pattern. The photo sensor 86 monitors only a small length predetermined portion of path 88 before it it switched off providing an i~dicia detecting inlay. Indicia detected are compare with a second mathematical model with pry determined criteria based on , the characteristics of the register indicia, e.g., number of marks, spacing between marks, mark dimensions.
If the indicia detected by photoelectric sensor 86 conform to the mathematical model, then the position where this indicia pattern occurred is registered.
It is contemplated that the inventive concepts S herein described may be variously otherwise embodied and it is intended that the appended claims be con-trued to include alternative embodiments ox the invent lion except insofar as limited by the prior auto
Claims (11)
1. An indicia detection apparatus for selectively detecting a predetermined register indicia on a moving web which is positioned within an encompassing field of indicia comprising:
code indicia having a predetermined pattern and having a spacially fixed relationship on said web relative to said register indicia;
indicia sensing means for sensing the spacial configuration of indicia lying along a longitudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for generating a detection signal indicative of the spacial orientation of indicia in said longitudinally extending, indicia sensing path;
data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corresponding to said code indicia and for selecting a portion of said detection signal for further processing based on the detection of said code indicia and the spacial relation-ship of said code indicia to said register indicia and for comparing said selected signal portion with a second set of criteria for detecting a portion of said selected signal portion corresponding to said register indicia and registering the detection of said register indicia.
code indicia having a predetermined pattern and having a spacially fixed relationship on said web relative to said register indicia;
indicia sensing means for sensing the spacial configuration of indicia lying along a longitudinally extending, indicia sensing path comprising at least one longitudinally extending, narrow width sensing track and for generating a detection signal indicative of the spacial orientation of indicia in said longitudinally extending, indicia sensing path;
data processing means for receiving said indicia detection signal and for comparing said signal with a predetermined set of criteria for detecting a portion of said detection signal corresponding to said code indicia and for selecting a portion of said detection signal for further processing based on the detection of said code indicia and the spacial relation-ship of said code indicia to said register indicia and for comparing said selected signal portion with a second set of criteria for detecting a portion of said selected signal portion corresponding to said register indicia and registering the detection of said register indicia.
2. An apparatus of claim 1, wherein said indicia detection signal is a time based signal and the apparatus further comprises:
web velocity monitoring means for monitoring the velocity of said moving web and for generating a velocity based signal in response thereto and providing said velocity based signal to said data processing means;
whereby the longitudinal distance between two preselected indicia is calculated by said data pro-cessing means from data provided by said time based indicia detection signal and said web velocity based signal.
web velocity monitoring means for monitoring the velocity of said moving web and for generating a velocity based signal in response thereto and providing said velocity based signal to said data processing means;
whereby the longitudinal distance between two preselected indicia is calculated by said data pro-cessing means from data provided by said time based indicia detection signal and said web velocity based signal.
3. An apparatus of claim 1 or 2, wherein said first predetermined set of criteria for selecting a portion of said detection signal for further processing comprises (a) the longitudinally measured dimension of detected indicia, (b) the longitudinally measured distance between detected indicia, or (c) the number of indicia detected within a predetermined longitudinal distance on at least one detection band.
4. An apparatus of claim 1 or 2, wherein said second predetermined set of criteria for selecting a portion of said detection signal for further processing comprises (a) the longitudinally measured dimension of detected indicia, (b) the longitudinally measured distance between detected indicia, or (c) the number of indicia detected within a predetermined longitudinal distance on said at least one detection track.
5. An apparatus of claim 1 or 2, wherein said indicia sensing means comprises a single photoelectric sensing means for detecting indicia within a single detection track.
6. An apparatus of claim 1 or 2, wherein said indicia sensing means comprises:
a first photoelectric sensing means for detecting indicia within a first track including said pre-determined register indicia and for generating a first detection signal; and a second photoelectric sensing means for detecting indicia within a second track excluding said predetermined register indicia for generating a second detection signal;
said indicia sensing means detection signal including said first and second detection signals.
a first photoelectric sensing means for detecting indicia within a first track including said pre-determined register indicia and for generating a first detection signal; and a second photoelectric sensing means for detecting indicia within a second track excluding said predetermined register indicia for generating a second detection signal;
said indicia sensing means detection signal including said first and second detection signals.
7. A method of detecting a predetermined register indicia pattern on a moving web which is positioned within an encompassing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern positioned in predetermined spacial relationship to said register indicia pattern, com-prising the steps of:
continuously monitoring a longitudinally extending code track on said web containing said pre-determined code indicia pattern;
comparing spacial relationships of indicia detected on said code track during monitoring with a predetermined model corresponding to said code indicia pattern until said code pattern is detected;
selecting a short length portion of a longi-tudinally extending register track on said web con-taining said register indicia pattern based upon the detection of said code indicia pattern;
monitoring said selected portion of said longitudinally extending register path;
comparing spacial indicia patterns detected on said register path with a predetermined model corresponding to said register indicia pattern until said register indicia pattern is detected.
continuously monitoring a longitudinally extending code track on said web containing said pre-determined code indicia pattern;
comparing spacial relationships of indicia detected on said code track during monitoring with a predetermined model corresponding to said code indicia pattern until said code pattern is detected;
selecting a short length portion of a longi-tudinally extending register track on said web con-taining said register indicia pattern based upon the detection of said code indicia pattern;
monitoring said selected portion of said longitudinally extending register path;
comparing spacial indicia patterns detected on said register path with a predetermined model corresponding to said register indicia pattern until said register indicia pattern is detected.
8. A method of claim 7, wherein the step of con-tinuously monitoring a longitudinally extending code track comprises monitoring a single narrow band.
9. A method of claim 7 or 8, wherein said step of comparing spacial relationships of indicia detected with a predetermined model comprises the step of (a) comparing the longitudinal dimensions of detected indicia with a predetermined value, or (b) comparing the longi-tudinal distance between indicia with a predetermined value.
10. A method of detecting a predetermined register indicia pattern on a moving web positioned within an encompassing field of indicia, a portion of said encom-passing field having a predetermined code indicia pattern, comprising the steps of:
continuously monitoring the passage of indicia within a longitudinally extending code path with a monitoring unit sensitive to all indicia in said code path, said code path including said code indicia pattern;
comparing indicia patterns in said code path with a first set of predetermined criteria corresponding to said code indicia pattern for detecting the passage of said code indicia pattern;
monitoring the passage of indicia within a longitudinally extending register path for a predetermined interval with a monitoring unit sensitive to all indicia in said register path, said register path including said register indicia pattern, said predetermined monitoring interval being initiated in response to detecting the passage of said code indicia pattern;
comparing the indicia in said register path detected during said predetermined interval with a second predetermined set of criteria corresponding to said register indicia for detecting the passage of said register indicia; and recording the passage of said register indicia.
continuously monitoring the passage of indicia within a longitudinally extending code path with a monitoring unit sensitive to all indicia in said code path, said code path including said code indicia pattern;
comparing indicia patterns in said code path with a first set of predetermined criteria corresponding to said code indicia pattern for detecting the passage of said code indicia pattern;
monitoring the passage of indicia within a longitudinally extending register path for a predetermined interval with a monitoring unit sensitive to all indicia in said register path, said register path including said register indicia pattern, said predetermined monitoring interval being initiated in response to detecting the passage of said code indicia pattern;
comparing the indicia in said register path detected during said predetermined interval with a second predetermined set of criteria corresponding to said register indicia for detecting the passage of said register indicia; and recording the passage of said register indicia.
11. A method of detecting a predetermined register indicia pattern on a moving web which is positioned within an encompassing field of indicia, a portion of said encompassing field having a predetermined code indicia pattern, comprising the steps of:
continuously comparing the indicia in a first longitudinally extending path with a first predetermined set of criteria corresponding to characteristics of said code indicia pattern and generating a first signal indicating the passage of each set of indicia meeting said first predetermined set of criteria;
continuously comparing the indicia in a second longitudinally extending path with a second predetermined set of criteria corresponding to characteristics of said register indicia pattern and generating a second signal indicating the passage of each set of indicia meeting said second predetermined set of criteria;
comparing said first signal with said second signal for detecting the occurrence of a code indicia pattern indication in said first signal and a register indicia pattern indication in said second signal within a predetermined interval; and registering the passage of a register indicia pattern whenever said comparison of signals indicates the occurrence of a register indicia pattern and a code indicia pattern within said predetermined interval.
continuously comparing the indicia in a first longitudinally extending path with a first predetermined set of criteria corresponding to characteristics of said code indicia pattern and generating a first signal indicating the passage of each set of indicia meeting said first predetermined set of criteria;
continuously comparing the indicia in a second longitudinally extending path with a second predetermined set of criteria corresponding to characteristics of said register indicia pattern and generating a second signal indicating the passage of each set of indicia meeting said second predetermined set of criteria;
comparing said first signal with said second signal for detecting the occurrence of a code indicia pattern indication in said first signal and a register indicia pattern indication in said second signal within a predetermined interval; and registering the passage of a register indicia pattern whenever said comparison of signals indicates the occurrence of a register indicia pattern and a code indicia pattern within said predetermined interval.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66791484A | 1984-11-02 | 1984-11-02 | |
| US667,914 | 1984-11-02 |
Publications (1)
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|---|---|
| CA1239702A true CA1239702A (en) | 1988-07-26 |
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ID=24680184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000494429A Expired CA1239702A (en) | 1984-11-02 | 1985-11-01 | Obstructed-field-indicia-sensing device |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0186750A3 (en) |
| JP (1) | JPS61182173A (en) |
| AU (1) | AU585541B2 (en) |
| BR (1) | BR8505465A (en) |
| CA (1) | CA1239702A (en) |
| ES (1) | ES8800450A1 (en) |
| ZA (1) | ZA858308B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2195179B (en) * | 1986-09-11 | 1991-05-15 | Synergy Computer Graphics | Registration system for a moving substrate |
| US5149980A (en) * | 1991-11-01 | 1992-09-22 | Hewlett-Packard Company | Substrate advance measurement system using cross-correlation of light sensor array signals |
| DE4218760C2 (en) * | 1992-06-06 | 2000-02-03 | Heidelberger Druckmasch Ag | Arrangement of register marks on a printed product and method for determining register deviations |
| DE4218762C2 (en) * | 1992-06-06 | 2002-04-18 | Heidelberger Druckmasch Ag | Method and device for determining register errors on a multicolour printed printed product with register marks |
| DE4218764A1 (en) * | 1992-06-06 | 1993-12-09 | Heidelberger Druckmasch Ag | Method for positioning a register mark sensor on a sheet-fed printing press |
| EP1205416A3 (en) * | 1997-11-03 | 2003-04-02 | Gerber Scientific Products, Inc. | A web having alignment indicia and an associated web feeding and working apparatus |
| DE19838545A1 (en) | 1998-08-25 | 2000-03-02 | Focke & Co | Method and device for recognizing print marks |
| CN114383547B (en) * | 2020-10-21 | 2024-03-22 | 广东博智林机器人有限公司 | Feeding method and device for fixed die table production line, electronic equipment and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH381713A (en) * | 1960-10-22 | 1964-09-15 | Inventio Ag | Method and device for reading out certain marks from an overall print image when processing goods in web form |
| DE2053283B2 (en) * | 1970-10-30 | 1979-05-23 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Photoelectric scanning of register marks on printed web - using logic circuit with counter receiving speed proportional pulses between detection of first and second marks of recognition character |
| IT1088785B (en) * | 1976-12-23 | 1985-06-10 | Sick Optik Elektronik Erwin | DEVICE FOR IDENTIFICATION OF IDENTIFICATION MARKINGS ON A MOVING BELT |
| JPS5981764A (en) * | 1982-10-30 | 1984-05-11 | Matsushita Electric Works Ltd | Data reading method of mark card |
-
1985
- 1985-10-29 EP EP85113759A patent/EP0186750A3/en not_active Withdrawn
- 1985-10-29 ZA ZA858308A patent/ZA858308B/en unknown
- 1985-10-30 AU AU49199/85A patent/AU585541B2/en not_active Ceased
- 1985-10-31 ES ES548423A patent/ES8800450A1/en not_active Expired
- 1985-11-01 BR BR8505465A patent/BR8505465A/en not_active IP Right Cessation
- 1985-11-01 CA CA000494429A patent/CA1239702A/en not_active Expired
- 1985-11-02 JP JP60246935A patent/JPS61182173A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ZA858308B (en) | 1986-06-25 |
| JPS61182173A (en) | 1986-08-14 |
| ES548423A0 (en) | 1987-11-01 |
| EP0186750A3 (en) | 1987-11-11 |
| BR8505465A (en) | 1986-08-05 |
| AU585541B2 (en) | 1989-06-22 |
| ES8800450A1 (en) | 1987-11-01 |
| EP0186750A2 (en) | 1986-07-09 |
| AU4919985A (en) | 1986-05-08 |
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