Patent US3097464A successfully refreshed from Google Patents.
Patent US3777166A successfully refreshed from Google Patents.
US3777166A
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US
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Control device for a mark on a continuously moving band
Assignee: Societe Nationale dExploitation Industrielle des Tabacs et Allumettes SAS
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Filing: 1972-09-15
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Granted: 1973-12-04
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Expires: 1992-09-15
Abstract
Abstract An arrangement for monitoring the presence, quality and location of markings on a moving band. Two photo-sensitive detectors are directed onto the moving band and provide a signal when a mark on the band passes beneath one of the detectors. The signal from the photosensitive detectors is processed for amplitude and frequency of occurrence. The amplitude processing determines whether the mark is of the desired quality and printed intensity, whereas proper location and spacing of the marking is determined from the pulse repetition frequency derived from the photosensitive detectors. A comparator monitors the pulse repetition frequency by comparing the pulse signal from the photosensitive detector with the pulse signal realized from a reference source.
Inventors
- 👤 R Poupin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:23
CPC Classifications
B; B41; B41F; B41F33/00; B41F33/02; G; G06; G06K; G06K7/00; G06K7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A process of checking on a continuously moving band having an area provided with regularly spaced marks in the direction of the movement of said band, a characteristic of said marks being position, depth of impression and presence thereof, said process comprising the steps of directing light to a first local zone of said area of said band and to a second local zone of said band so near to said first local zone that when one of said marks is located on said first zone there is no mark on said second local zone, sensing the light received from said first and second local zones to produce two independent electrical signals, said signals being substantially identical when no mark is present on said first zone and being substantially different when a mark prevails on said first zone, comparing said two signals, producing a third signal which is the difference between the signals relaized from the light passing through a mark on said first zone and light passing through said unmarked second zone, and said third signal being indicative of the condition when the depth of impression and presence of said marks differs from a predetermined depth of impression and presence.
Claim 2
Dependent Claim
201 words
A process of checking on a continuously moving band having an area provided with regularly spaced marks in the direction of the movement of said band, a characteristic of said marks being position, depth of impression and presence thereof, said process comprising the steps of directing light to a first local zone of said area of said band and to a second local zone of said band so near to said first local zone that when one of said marks is located on said first zone there is no mark on said second local zone, sensing the light received from said first and second local zones to produce two independent electrical signals, said signals being substantially identical when no mark is present on said first zone and being substantially different when a mark prevails on said first zone, comparing said two signals, producing a third signal which is the difference between the signals relaized from the light passing through a mark on said first zone and light passing through said unmarked second zone, and said third signal being indicative of the condition when the depth of impression and presence of said marks differs from a predetermined depth of impression and presence.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |