Apparatus for evaluating quality of raw coffee beans

Details Apparatus for evaluating quality of raw coffee beans Apparatus for evaluating quality of raw coffee beans

1989-10-16

1990-10-16

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 250343, G01N 2135

Patent

active

049637436

ABSTRACT:
In an apparatus for evaluating raw coffee beans, a near-infrared light beam is applied to sample coffee powder, a detector receives light reflected from and/or transmitted through the sample coffee powder to generate a signal representative of luminous intensity of the received light. A memory device has stored therein at least one of characteristic coefficients and appraisal coefficients for the sample coffee powder. A calculation device calculates at least one of characteristic value and appraisal values of the raw coffee beans, based on the stored coefficients and the signal from the detector.

REFERENCES:
patent: 3776642 (1975-12-01), Anson et al.
patent: 4260262 (1981-04-01), Webster
patent: 4633087 (1986-12-01), Rosenthal et al.
patent: 4742228 (1988-05-01), Bischoff
patent: 4752689 (1988-06-01), Satake
patent: 4800280 (1989-01-01), Satake
patent: 4806764 (1989-02-01), Satake
"Characteristics of Non-Destructive Near-IR Instruments for Grain & Food Products," Robert D. Rosenthal.

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