Method for detecting films

Details Method for detecting films Method for detecting films

1996-10-11

1998-06-09

Eickholt, Eugene H.

Printing

Processes

Condition responsive

1013511, 101DIG45, 101365, 2505591, 25055911, 25055927, 356319, 356381, B41F 304

Patent

active

057619999

ABSTRACT:
The invention relates to a method and device for detecting ink or lacquer films on metallic surfaces inside printing machines. In particular, to irradiate the surface with light and sensing of the intensity of the reflected light to detect whether an ink film or lacquer film on a roller has been completely removed by applying a metering element or doctor-blade element. This is achieved according to the invention by the irradiation of the metallic surface or of the film located thereon, and the reception of the light reflected from the surface or the film located thereon is performed at the Brewster angle with respect to the surface normal, the Brewster angle being defined by the refractive index of the material of the film to be determined and that liner polarization of the light is performed at least partially in the plane of incidence, at least in one of the two beam paths.

REFERENCES:
patent: 3623818 (1971-11-01), Gardner et al.
patent: 4570539 (1986-02-01), Rottstedt
patent: 4575249 (1986-03-01), Grieger
patent: 4695162 (1987-09-01), Itonaga et al.
patent: 4829898 (1989-05-01), Wieland
patent: 5185644 (1993-02-01), Shimoyama et al.
patent: 5483346 (1996-01-01), Butzer
patent: 5517312 (1996-05-01), Finarov
patent: 5552890 (1996-09-01), Nanna et al.
patent: 5572314 (1996-11-01), Hyman, Jr. et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2190000