William L Good

US Patent:

49438271, Jul 24, 1990

Filed:

Apr 27, 1989

Appl. No.:

7/344185

Inventors:

William G. Good - Centerville OH
Mark E. Holycross - Centerville OH

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G03B 2752

US Classification:

355 30

Abstract:

A method and apparatus form visible images in an imaging media which exhibits variation in sensitivity and color balance as a function of temperature and humidity changes. The media includes a substrate having provided on one of its surfaces a layer of microcapsules containing an image forming agent and a photohardenable composition. In the apparatus, a radiation source provides one or more bands of actinic radiation for exposing the substrate. An optical system focuses the actinic radiation onto the substrate to form a latent image thereon. A developing device develops the latent image into a visible image onto the substrate or onto a receiver substrate. A temperature and/or humidity sensor is provided for sensing the temperature and/or humidity exposure environment prior to exposure. An exposure control responsive to the sensors(s) controls the duration of the exposure at least partially as a function of temperature and/or humidity.