EP 0042860 B1 19840725 - APPARATUS FOR DETECTING THE PASSAGE OF MULTIPLE DOCUMENTS
Title (en)
APPARATUS FOR DETECTING THE PASSAGE OF MULTIPLE DOCUMENTS
Publication
Application
Priority
US 10887479 A 19791231
Abstract (en)
[origin: WO8101827A1] An apparatus for detecting the passage of multiple documents (10) in a transport system, including a pair of rollers (20, 22) between which said documents (10) are arranged to pass and which are displaceable by an extend dependent on the thickness of one document or multiple documents simultaneously passing therebetween. This displacement is measured by the movement of a graded density translucent member (34) between the photodiode (46) and sensor (40) of a detector (36). Electronic circuitry associated with the detector (36) indicates the presence of a record member (10) between the rollers (20, 22), and also the presence of multiple record members (10). The graded density of the member (34) allows the circuitry to detect only the displacement from the static position of the rollers (20, 22) eliminating the necessity for adjustment due to wear, temperature, and other mechanical factors.
IPC 1-7
IPC 8 full level
CPC (source: EP)
B65H 7/12 (2013.01); B65H 7/14 (2013.01); B65H 2553/41 (2013.01); B65H 2701/1912 (2013.01)
Citation (examination)
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 19, no. 12, May 1977 ARMONK (US) W.A. BOOTHROYD "Double document detect system", pages 4749-4750
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 8101827 A1 19810709; DE 3068754 D1 19840830; EP 0042860 A1 19820106; EP 0042860 A4 19820422; EP 0042860 B1 19840725; JP S56501801 A 19811210
DOCDB simple family (application)
US 8001720 W 19801223; DE 3068754 T 19801223; EP 81900285 A 19801223; JP 50050481 A 19801223