Xerographic infrared reflectance densitometer (IRD) sensor

Details Xerographic infrared reflectance densitometer (IRD) sensor Xerographic infrared reflectance densitometer (IRD) sensor

1996-12-16

1998-06-30

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

399 27, 399 49, 399 64, 399 74, G03G 2100, G01N 2147

Patent

active

057738270

ABSTRACT:
An infrared reflectance densitometer (IRD) sensor which utilizes four blocks each of which generates an element of a given equation and a fifth block which generates an output voltage based on the given equation. The IRD sensor eliminates a problem known as hunting.

REFERENCES:
patent: 4550254 (1985-10-01), Zomorrodi et al.
patent: 4950905 (1990-08-01), Butler et al.
patent: 4989985 (1991-02-01), Hubble, III et al.
patent: 5083161 (1992-01-01), Borton et al.

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