Automatic setup of photographic printer,申请号US19920968752-传众专利搜索

Automatic setup of photographic printer

申请公布号：US5311251(A)

申请号：US19920968752

申请日期：1992.10.30

申请公布日期：1994.05.10

申请人：

EASTMAN KODAK COMPANY

发明人：ROULE, THOMAS R.;OLLIVER, RICHARD;BEAULIEU, DENNIS N.;IRWIN, WILLIAM G.

分类号：G03B27/32;G03B27/72;G03B27/73;(IPC1-7):G03B27/32

主分类号：G03B27/32

摘要：A method of operating a photographic printer to provide for automatic setup for a plurality of film types and conditions in which film term data for film types encountered by the printer is automatically created and periodically updated to reflect current experience using accumulated historical density data derived from scanning of film strips and in which exposure of image frames from a current film strip to a photosensitive medium is adjusted either by average density information stored for one or more film types from the historical data or by average density information derived from the current film strip with determination of which average density information to use being made automatically by comparison of either or both of film type or average minimum density information of the film strip with the corresponding stored information. Automatic adjustment of tungsten illumination exposure and automatic updating of slope compensation factors for under- and over-exposed negatives are also described.