GB1333821A - Means for testing documents - Google Patents
Means for testing documentsInfo
- Publication number
- GB1333821A GB1333821A GB36271A GB36271A GB1333821A GB 1333821 A GB1333821 A GB 1333821A GB 36271 A GB36271 A GB 36271A GB 36271 A GB36271 A GB 36271A GB 1333821 A GB1333821 A GB 1333821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- note
- plate
- thickness
- watermark
- contact
- 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
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/16—Testing the dimensions
- G07D7/164—Thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
1333821 Bank note validators INSTITUTET FOR MIKROVAGSTEKNIK 4 Jan 1971 [5 Jan 1970] 362/71 Heading G1A [Also in Division G4] The genuineness of documents, which term includes bank notes, is tested by a device which defines and measures the thickness of a document over an area which has substantially the same shape as a predetermined area of thickness different from that of all adjoining areas of a valid document, the device being non-contacting and non- optical and arranged to effect a test when a document is moved past it. In the embodiment described, the detecting means is an air capacitor having plates 10, 12, 13 and 26, plate 13 being shaped to conform, say, to the watermark of the note 11 being tested and plate 12 acting as a guard plate. A note 11 inserted into the device is driven forward at constant speed by rolls 27, 28 after energization of motor 29 by breaking of contact S1. Immediately prior to the watermark coming into exact vertical alignment with plate 13, contact S2 is broken by the leading edge of the note to maintain a voltage corresponding to the average thickness of the note in that position on the output side of integrator 24, Fig. 4. Subsequent variations of capacitance which represent variations of the thickness of the note under plate 13 are analyzed by unit 25 which receives signals from the output of a low-pass filter 22. Because plate 13 is shaped, the signal curve is highly dependent on the shape and thickness of the watermark and limits can thus easily be set concerning the height and width of the signal from filter 22 to produce a YES or NO signal from analyzer 25. This analyzer may comprise a Schmidt-trigger (72), Fig. 7 (not shown), which is triggered if a non- genuine note passes through the capacitor, but not otherwise, or alternatively pulses are counted by a counter (85), Fig. 8 (not shown), with a certain range of values read by a decoder (86) signifying a genuine note. In this modification, counter (85) may be set to zero when contact S2 is opened. If the watermark has areas which are thicker and areas which are thinner than the average thickness of the note, two capacitative detectors may be arranged in series with YES-signals being required from both for acceptance. In the verification of printing patterns and less well-defined watermarks a movement of the note or document in two directions may be necessary. In other embodiments the air capacitor may be replaced by a radiation transmission and detection device, e.g., using a radio-active preparation as source, or an acoustic transmitter and receiver. In modifications, contact S1 and S2 may be replaced by photo-electric elements and relays R1, R2 may be replaced by electronic logic elements.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE00093/70A SE355428B (en) | 1970-01-05 | 1970-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333821A true GB1333821A (en) | 1973-10-17 |
Family
ID=20256024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36271A Expired GB1333821A (en) | 1970-01-05 | 1971-01-04 | Means for testing documents |
Country Status (6)
Country | Link |
---|---|
CH (1) | CH546986A (en) |
DE (1) | DE2100229A1 (en) |
FR (1) | FR2099042A5 (en) |
GB (1) | GB1333821A (en) |
NL (1) | NL7100068A (en) |
SE (1) | SE355428B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103971445A (en) * | 2014-05-13 | 2014-08-06 | 威海华菱光电股份有限公司 | Paper money thickness detecting device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2528970B1 (en) * | 1982-06-22 | 1985-09-27 | Flonic Sa | DEVICE FOR CHECKING THICKNESS OF DIELECTRIC SHEET MATERIAL |
ZA8330B (en) * | 1983-01-04 | 1983-11-30 | Krampe & Co | Rock cutting drum for a winning machine in mining in particular in underground coal mining |
NO165697C (en) * | 1988-03-10 | 1991-03-20 | Inter Marketing Oy Ab | SENSOR FOR AUTHENTICITY OF SECURITY PAPER. |
RU2721099C1 (en) * | 2019-12-26 | 2020-05-15 | Общество С Ограниченной Ответственностью "Конструкторское Бюро "Дорс" (Ооо "Кб "Дорс") | Device for detecting inhomogeneity with sharp boundaries of a thin object, and a method for use thereof |
-
1970
- 1970-01-05 SE SE00093/70A patent/SE355428B/xx unknown
-
1971
- 1971-01-04 GB GB36271A patent/GB1333821A/en not_active Expired
- 1971-01-05 CH CH5671A patent/CH546986A/en not_active IP Right Cessation
- 1971-01-05 NL NL7100068A patent/NL7100068A/xx unknown
- 1971-01-05 DE DE19712100229 patent/DE2100229A1/en active Pending
- 1971-01-05 FR FR7100160A patent/FR2099042A5/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103971445A (en) * | 2014-05-13 | 2014-08-06 | 威海华菱光电股份有限公司 | Paper money thickness detecting device |
Also Published As
Publication number | Publication date |
---|---|
CH546986A (en) | 1974-03-15 |
SE355428B (en) | 1973-04-16 |
FR2099042A5 (en) | 1972-03-10 |
NL7100068A (en) | 1971-07-07 |
DE2100229A1 (en) | 1971-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |