US 5,798,821 A · Copying of film under different conditions

Abstract

A copier for making prints from photographic negatives has two copying stations arranged in series. A filmstrip is conveyed through the stations in succession, and each negative of the filmstrip is scanned upstream of the copying stations. The data obtained upon scanning is analyzed to calculate the amounts of copy light for the negatives and to determine whether the respective negatives are to be copied under standard conditions or nonstandard conditions. Masters requiring standard conditions are normally copied in the upstream copying station and pass through the downstream station without being copied. On the other hand, masters requiring nonstandard conditions are transported through the upstream station without being copied and are subsequently copied in the downstream station.

Claims48

Dependent claims

A copying method, comprising the steps of conveying a pair of masters along a path extending through a pair of copying stations, one of said stations including a first source of radiant energy directed at said path, and the other of said stations including a second source of radiant energy directed at said path;

assigning one of said masters to said one station for copying and the other of said masters to said other station for copying based on a difference in at least one characteristic of said masters;
copying said one master in said one station using said first source, said one master being passed through said other station without being copied;
and copying said other master in said other station using said second source, said other master being passed through said one station without being copied.

Dependencies are inferred from the claim text.

Copying of film under different conditions

Life of this patent

Copying of film under different conditions

Life of this patent

Abstract

Claims48