Radiant energy – Invisible radiant energy responsive electric signalling – With means to inspect passive solid objects
Patent
1989-02-06
1990-08-21
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With means to inspect passive solid objects
250341, 355246, 356446, G03G 1500
Patent
active
049509055
ABSTRACT:
A non-black colored toner DMA sensor arrangement includes a light emitting device for illuminating a toner/surface substrate with light of a wavelength to which colored toners are non-absorbing, and to which the imaging surface is either partially absorbing or transmissive. Light is reflected from the toner predominantly by either scattering or multiple reflections to produce a significant component of diffusely reflected light. A sensor is arranged for detection of the diffusely reflected light, at an angle that does not detect the specularly reflected component of reflected light. An increasing level of diffusely reflected light indicates an increased density of toner coverage per unit area.
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Butler Michael A.
Lysy Dusan G.
Morehouse Jr. Paul W.
Costello Mark
Glick Edward J.
Hannaher Constantine
Xerox Corporation
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