Sensor for water film on a plate in printing machines

Details Sensor for water film on a plate in printing machines Sensor for water film on a plate in printing machines

1991-07-17

1993-02-09

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

Of surface reflection

356381, 250225, G01J 400, G01B 1106

Patent

active

051856441

ABSTRACT:
An on-plate water film sensor for printing machines uses a narrow-band light source, a photo modulator for chopping a light beam therefrom into p- and s-polarized beams, a collimator for making parallel the rays of the collimated beams with a given cross-sectional area for measurement, a wavelength plate for adjusting the wavefront of the parallel rays, a receiver for the light secularly reflected from a plate, and an arithmetic unit to figure out the thickness of a water film formed on the plate based on the intensities of the received beams. Water lining which usually has patterns of narrow width can be detected, and the measurement of a water film thickness can be done with high speed.

REFERENCES:
patent: 4129781 (1978-12-01), Doyle
patent: 4695162 (1987-09-01), Itonaga et al.
patent: 4850711 (1989-07-01), Sano et al.
patent: 4872758 (1989-10-01), Miyazaki et al.
patent: 4906844 (1990-03-01), Hall

Affiliated with

Also associated with

Rating

Sensor for water film on a plate in printing machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sensor for water film on a plate in printing machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensor for water film on a plate in printing machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-328119