초록 ▼

A reader card for use in densitometric test analysis wherein a film having data recorded as spots thereon is supported by and retained on a base card, the reader card further having an area for use in establishing initial conditions for the optical system of the densitometer and a series of borders

A reader card for use in densitometric test analysis wherein a film having data recorded as spots thereon is supported by and retained on a base card, the reader card further having an area for use in establishing initial conditions for the optical system of the densitometer and a series of borders for indicating the relative position of the film on the card to the optical system of the densitometer. In a preferred embodiment, the reader card includes a base card having an opening therethrough, and an overlay thereover. The overlay retains the film in place and includes a black band covering the film, the black band having windows therethrough for observing and measuring the spots.

대표청구항 ▼

A reader card used in analyzing previously exposed photographic film, the film having thereon a plurality of longitudinally spaced-apart spots whose intensities vary in accordance with a response level to a testing procedure, comprising: a base card having an opening therethrough, the opening being

A reader card used in analyzing previously exposed photographic film, the film having thereon a plurality of longitudinally spaced-apart spots whose intensities vary in accordance with a response level to a testing procedure, comprising: a base card having an opening therethrough, the opening being dimensioned so that the spots on the film lie within the projection of said opening when the film is placed onto said base card; an overlay over at least a portion of said base card; an opaque band on said overlay, said band covering said opening; and a plurality of longitudinally spaced-apart, transparent windows through said opaque band, each of said windows being dimensioned and disposed for registration over the film so that the spots on the film are individually viewable in light passing through said opening and said window; and means for retaining the film in registration with said windows and overlying said opening.