Apparatus for monitoring and controlling the distribution of dro

Coating apparatus – Control means responsive to a randomly occurring sensed... – Condition of coated material

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356445, B05B 1208, C01B 1128

Patent

active

043611109

ABSTRACT:
Apparatus for monitoring the weight of glue sprayed on a veneer surface, where the light reflectance from droplet-covered regions on the surface differs from that of uncovered surface regions. A beam of light is directed onto the sprayed surface of a relatively moving veneer, and the light reflectance from a zone within the illuminated surface area is detected to produce a signal which varies according to instantaneously detected reflected light level. A signal-handling circuit in the apparatus transforms the signal to a binary data stream composed of one and other data states representing reflected light levels from droplet-covered and uncovered regions on the surface, respectively. The data stream is processed to compute the weight of glue sprayed on the surface.

REFERENCES:
patent: 3185024 (1965-05-01), McCreanor
patent: 3819948 (1974-06-01), Iijima et al.

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