Densitometer

Details Densitometer Densitometer

1980-06-02

1982-07-06

Corbin, John K.

Optics: measuring and testing

For light transmission or absorption

Of photographic film

346 33A, 346 49, 356223, G01N 2101, G01J 142

Patent

active

043380336

ABSTRACT:
A densitometer comprising a recorder so adapted as to be capable of recording a set of analytical data obtained with a photometric system twice at a definite recording interval, an index arranged at a position apart by a distance equal to said recording interval from the recording pen of said recorder, a switch for setting boundary point and another switch commanding erasure of boundary point, said densitometer being so adapted as to permit setting and erasing boundary point by using the first recorded densitogram and said index.

REFERENCES:
patent: 3706877 (1972-12-01), Clifford, Jr. et al.
patent: 3842422 (1974-10-01), Vandenbroek et al.
patent: 3902813 (1975-09-01), Vandenroek et al.
patent: 4005434 (1977-01-01), Golias et al.
patent: 4116565 (1978-09-01), Powell et al.
patent: 4118781 (1978-10-01), Brezinski et al.

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