Abstract: Sheet handling and counting apparatus comprising cooperating stripper shoes and feed rollers forming a feed nip which strips multiple fed sheets causing sheets to be delivered from a feed nip one at a time toward an acceleration nip. The orientation of the stripper shoe relative to the feed roller and the input tray provides excellent stripping action while preventing damage to the sheets being handled. The acceleration nip is formed by cooperating acceleration idlers and O-rings supported by acceleration rollers for accelerating sheets entering the acceleration nip to form a gap between adjacent sheets which aids in the counting of sheets. The stripper shoe is mounted within a clip which also serves to protect the forward end surface of the stripper shoe as well as providing a low friction guide surface engaged by the leading edges of sheets approaching the feed nip.

Abstract: Sensors in the infeed and output stackers, under control of the microprocessor, monitor the sheets. The apparatus is started automatically by placing sheets in the infeed. A count of the sheets is developed and displayed as the sheets are fed. When the infeed is empty and the output contains sheets, the count is retained. If sheets are removed from the outfeed, the count is retained and is reset only after more sheets are placed in the input. The same rules obtain for batching. The sensors cooperate with singles, holes and doubles detectors and have their again adjusted depending upon sheet density. Automatic threshold adjustment circuits compensate for dust build-up and component aging. Upon sheet detection, the sensing circuit threshold level is instantaneously shifted to prevent an abrupt change in intensity from the sheet covering the sensor to provide an erroneous indication of the presence of a subsequent sheet or sheets.

Abstract: Sensors in the infeed and output stackers, under control of the microprocessor, monitor the sheets. The apparatus is started automatically by placing sheets in the infeed. A count of the sheets is developed and displayed as the sheets are fed. When the infeed is empty and the output contains sheets, the count is retained. If sheets are removed from the outfeed, the count is retained and is reset only after more sheets are placed in the input. The same rules obtain for batching. The sensors cooperate with singles, holes and doubles detectors and have their gain adjusted depending upon sheet density. Automatic threshold adjustment circuits compensate for dust build-up and component aging. Upon sheet detection, the sensing circuit threshold level is instantaneously shifted to prevent an abrupt change in intensity from the sheet covering the sensor to provide an erroneous indication of the presence of a subsequent sheet or sheets.

Abstract: A stack of sheets arranged in an input stacker pass through a nip formed by cooperating feed rollers and stripper assemblies, which serve to separate sheets and feed them one at a time toward an acceleration assembly comprised of acceleration roller and cooperating idler means to form a gap between adjacent sheets for counting the sheets. The accelerated sheets are then fed into an output stacker. Belts couple drive from the accelerating drive rollers to accelerating driven rollers rotatable about an axis coaxial with the feed rollers and also cooperate with stationary guides to cause the sheets to experience some acceleration prior to reaching the acceleration nips. Resilient members cooperate with the feed roller to halt a sheet, in the event of an abrupt halt during normal operation to prevent the sheet from advancing to the acceleration nip.

Abstract: Sensors in the infeed and output stackers, under control of the microprocessor, monitor the sheets. The apparatus is started automatically by placing sheets in the infeed. A count of the sheets is developed and displayed as the sheets are fed. When the infeed is empty and the output contains sheets, the count is retained. If sheets are removed from the outfeed, the count is retained and is reset only after more sheets are placed in the input. The same rules obtain for batching. The sensors cooperate with singles, holes and doubles detectors and have their gain adjusted depending upon sheet density. Automatic threshold adjustment circuits compensate for dust build-up and component aging. Upon sheet detection, the sensing circuit threshold level is instantaneously shifted to prevent an abrupt change in intensity from the sheet covering the sensor to provide an erroneous indication of the presence of a subsequent sheet or sheets.

Abstract: A magnetic sensor including a coil for sensing a changing magnetic field developed by paper currency moving past the magnetic sensor. A capacitor forms a tuned circuit with the magnetic sensor coil to pass only those signals lying within a predetermined frequency range. A comparator compares the signals lying within the pass band with a predetermined threshold to determine the presence or absence of genuine currency. The tuned circuit significantly improves the signal to noise ratio of the sensing means and hence, significantly improves the ability to determine the genuineness of the currency. In a second embodiment, the presence of a magnetic field having a field strength above the predetermined threshold is utilized to pass timing pulses for clocking a counter. A decoder gate coupled to the counter indicates the presence of a genuine bill, only after a predetermined count has been reached.