PHOTOGRAPHIC MATERIAL Russian patent published in 1998 - IPC

FIELD: photographic materials. SUBSTANCE: invention relates to silver-free photographic materials and can be used in reprography when producing positive imprints from negatives in traditional photography or when photographically recording information (by laser or oscillograph ray). To increase light sensitivity, light sensitive layer is used composed of (in weight parts): polyvinyl alcohol, 100; cupric chloride, 10-25; and potassium chlorate, 1-2.5. Photographic material (carrier and light sensitive layer) is developed at 120-130 C. light sensitivity is (5.5-9.8)•10^-2 J/sq.cm and development time 2.5 min. Optical density of the image obtained is 0.2, and maximum optical density more than 2.5. EFFECT: increased light sensitivity. 1 tbl