Sheet detecting device

Details Sheet detecting device Sheet detecting device

1982-04-21

1984-11-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

271258, 271265, G01V 904

Patent

active

044840705

ABSTRACT:
A device in which a light source and a light receiving element are disposed at one side of a sheet transportation path and a reflecting member is disposed at the other side of the sheet transportation path so that a light ray emitted from the light source is reflected by the reflecting surface of the reflecting member and is caused to enter the light receiving element and any variation in the quantity of light entering the light receiving element is detected to thereby detect the presence of a sheet. The reflecting member is disposed such that the angle formed by the normal to the reflecting member with the surface of the sheet placed at the detection position is equal to or smaller than the critical angle at which total reflection is created on the surface of the sheet.

REFERENCES:
patent: 4281244 (1981-07-01), Murata et al.

Affiliated with

Also associated with

Rating

Sheet detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2190641