ence of ambient noise from developing an erroneous COUNTERFEIT DETECTION MEANS FOR PAPER indication.
COUNTING The fluorescence detection means is further provided
BACKGROUND OF THE INVENTION with a "currency-like" background to greatly enhance
_ , , , „ the sensitivity and hence overall capability of the fluo
The ability to detect the presence of a counterfeit bill „ ,w„>,*;„„ „,„„.,„ Af„, „ „ „„,, ■ „ „„„
,:,, n , ■ rescence detection means. Alarm means may be pro
or suspect bill requires a high degree of expertise and is .. , . , e ... , , , .
^ • ii i. i J * u i • -i • x-* vided in the form of either a single alarm device com
typically checked at banks or other similar institutions. ^ , x, , ^ . . ° ^ , ^ x.
To date, no equipment exists which is capable of inte- mon to bo* detectTM ?fu,ts 01 detec lon
grating the examination process into or as part of an- 10 means mav be Provided. Means are provided for selec
other routine activity so as to greatly facilitate the han- tlvely enabling the detection apparatus, dependent upon
dling of such currency, the ideal technique being the tne desires of the operator.
ability to perform initial tests on currency simulta- OBJECTS OF THE INVENTION AND BRIEF
neously with a normal counting or processing operation DESCRIPTION OF THE FIGURES thereby significantly reducing the amount of time per 15
individual note required for such handling when per- It is therefore one object of the present invention to
formed separately. Unfortunately, none of the apparatus provide novel high-speed currency and note counting
and/or techniques presently available are capable of apparatus incorporating extremely sensitive detection
performing all of the above activities at high speed and apparatus for detecting the presence of suspect cur
within a single integrated apparatus. The tests which 20 rency among the currency being counted,
are typically performed are those involving detection sm another object of the present mvention is to
for the presence of fluorescence and a test for detecting idg novd detection apparatus for detecting the
the presence of magnetic particles in the ink employed iWe cg counterfeit cu substantially
in printing the currency. Present day apparatus pro- . , , , e ,
vides an arrangement for perforniing such tests either in 25 simultaneously with high-speed countmg of such cur
a manner which requires a very significant amount of rency and wlthout affectmS the operating speed of the
manual activity as part of the test or through the use of counting equipment and further providing novel means
equipment which is extremely slow and which, in any for isolating the suspect currency in the equipment to
case, is incapable of incorporating the above-mentioned facilitate its removal in a simple straightforward manner
tests in high-speed counting apparatus. 30 and hence to facilitate rapid reinitiation of the counting
and detection operations.
BRIEF DESCRIPTION OF THE INVENTION Stiu aoafba Pobject of the present ... k tQ
The present invention is characterized by comprising provide novel counterfeit detection apparatus including
a novel high-speed document handling and counting self-monitoring means for assuring normal operation of
device in which the above-mentioned tests may be se- 35 the equipment during a detection operation,
lectively performed either individually or simulta- still another object of the present invention is to
neously and wherein either or both tests are further pr0vide novel detection apparatus including means to
performed simultaneously with the performance of the compensate for spurious signals to thereby prevent
document counting and/or handling activities. currency under examination from being erroneously
The present invention comprises a high-speed docu- 40 identified as bein t
ment handling and counting device in which means are The ... ^ ■ ^ esent
provided for performing a magnetic detection test and a . ^. .... ^ J, ,.
fluorescence detection test as the documents undergo will become apparent when reading the ac
document separation, whereupon the documents, ar- companying description and drawings m which:
ranged in a stack in an infeed hopper, are separated and 45 FIG-118 a simplified diagrammatic elevational view
moved in a one-at-a-time fashion at spaced intervals of the document counting and handling device incorpo
along a feed path toward an outfeed stacker wherein the rating the principles of the present invention,
documents are counted prior to reaching the outfeed FIG. la is a side elevational view of the document
stacker. Both detection tests are completed on or before handler showing the physical arrangement of a portion
performance of the actual counting of each document 50 of the power train of the apparatus of FIG. 1, and FIG.
and, upon the presence of a suspect bill or note, the lb is a diagrammatic view of the entire power train of
separation and counting operations are abruptly halted the apparatus shown in FIGS. 1 and la.
and the suspect bill is the last one to be forwarded to the FIG. lc shows an enlarged detailed view of the detec
stacker and is thus readily identified since it is the top- tor assemblies employed in the apparatus of FIG. 1.
most document, to thereby facilitate identification of 55 FIG ld is a front elevational view of a portion of the
that bill or note which is suspect and to greatly simplify apparatus of FiG. 1 showing a portion of the magnetic
its removal from the apparatus for the purpose of a detector
more detailed observation FIG. 2 shows a front elevational view of the appara
The circuitry is further adapted to permit reinitiation . ~ , rr
r A. x- j r xt- j . „ tUS Of FIG. 1.
of the counting operations and of the detection opera- 60 , , ,, , xl_ . . ■ , ,
tions immediately after removal of the suspect currency t F*GS- 3a a°d 3b shTMJ* circuitry employed with and without in any way affecting the accuracy of the the detection devices of FIG. lc. count FIG. 3c is a circuit diagram of an alternative mag
Monitor means are provided for assuring that the netic test method which may be employed to great fluorescence detection apparatus is in proper operating 65 advantage in the apparatus of FIG. 1. condition and, the magnetic detection means is pro- FIG. 3d is a plan view of a piece of currency and vided with dual heads and corresponding circuitry uti- shows the manner in which the piece of currency is lized therewith to counterbalance and prevent the pres- examined by the circuitry of FIG. 3c.