System for detecting multiple superposed sheets

Details System for detecting multiple superposed sheets System for detecting multiple superposed sheets

1997-07-16

1999-10-12

Le, Thien Minh

Registers

Records

235475, G06K 1900, G06K 1300

Patent

active

059658657

ABSTRACT:
A system is for detecting the passage of multiple sheets along a feed path. The system includes a sensing station (12) through which the feed path passes and which has a light emitter (48) and an optical sensor (50) arranged to sense light transmitted from the light emitter through an item comprising a single or multiple sheet present at the sensing station. The optical sensor (50) provides a voltage output whose magnitude is dependent on the intensity of the transmitted light received by the optical sensor. This output is applied to the first input (58) of a log ratio amplifier (60). A voltage representative of the output of the optical sensor when no item is present at the sensing station (10) is applied to the second input of the amplifier (64). The output of the amplifier (60) is applied to data processing means (52) which then determines whether a single or multiple item is present at the sensing station. This system can be used in place of more complicated and expensive multiple sheet detect systems such as those incorporating co-operating rollers.

Affiliated with

Also associated with

Rating

System for detecting multiple superposed sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for detecting multiple superposed sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for detecting multiple superposed sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-654978