Need Optical Sensor

[OdinPT 0]

Hi ppl, Can anyone with some experience in the "Sensing field" give me some help ? I need a Optical sensor to detect a black mark in a paper, tha mark is 3mm width 3mm high, is a smal square... it has to operate from 3mm to 30mm and has to be ajustable, NPN. It has to be a very fast sensing sensor like has to actuate 3 times /second in the worst case. Sorry not to be very exact, but im not very experinced in this kind of things... Thanks in advance.

[gtsuport 61]

Take a look at "Print Mark" sensors. This type of sensor is designed for your application. Omron offers some, and so do other manufacturers. Based on the distance, make sure you check the "spot size" at your required distance for the sensor you select. Hope this will help.

[GEORGE_GR 0]

Take a look at this http://www.mysick.com/partnerPortal/eCat.a...y=Produktfinder One of the best sensors for mark sensing, I've used many of them