Registers – Coded record sensors – Particular sensor structure
Patent
1979-01-31
1981-03-10
Kilgore, Robert M.
Registers
Coded record sensors
Particular sensor structure
194 4F, 209534, 235492, G06K 708, G07F 106, B07C 500, G06K 1906
Patent
active
042556520
ABSTRACT:
Apparatus for detecting and providing a signal from detection indicia that is applied to a substrate such as a controlled document for the purpose of determining the character of the document, the substrate comprising individual substrate members or an elongate relatively continuous substrate member passing through the apparatus at high speed. Speeds of between 10 to 15 linear meters per second are the order of speeds which are contemplated by the invention.
The detection indicia on the controlled document comprises an area or areas which are deliberately applied to the document in a manner which renders the detection indicia substantially more conductive than the substrate.
Detection is effected by establishing a capacitive element with the aid of a charging electrode passing relative to the detection indicia and in such passage inducing a capacitive charge onto the detection indicia following which movement of the charged detection indicia relative to a sensor electrode establishes a second capacitive element. The charge which remains on the detection indicia as it moves into juxtaposition relative to the sensor electrode tends to leak off through coupling with this sensor electrode. The leakage current is used to provide a signal whose amplitude is detected and to operate certain output means such as indicators, ejectors, counters, or the like which will respond in accordance with the character of the detection indicia, for example, its size.
The method of the invention comprises the procedure which is followed using apparatus of the above described type.
A modified form of the invention provides means for reducing if not eliminating interference with detection which might be caused by the edges of a controlled document passing through the detecting apparatus.
REFERENCES:
patent: 3092402 (1963-06-01), Reed
patent: 3485358 (1969-12-01), Hooker
patent: 3509535 (1970-04-01), Berube
patent: 3530281 (1970-09-01), Smeiman
patent: 3562497 (1971-02-01), Gastal
patent: 3800155 (1974-03-01), Potenza
patent: 4029945 (1977-06-01), Yamada
patent: 4096991 (1978-06-01), Iguchi
patent: 4114032 (1978-09-01), Brosow
Coulter Systems Corporation
Kilgore Robert M.
LandOfFree
High speed electrically responsive indicia detecting apparatus a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High speed electrically responsive indicia detecting apparatus a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed electrically responsive indicia detecting apparatus a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1295799