PHOTOSENSITIVE SHEET

• Main Authors: HITATSU AKIO, YUI KOJI, SHIROKURA AKIRA, SATO SHIGE
• Format: Patent
• Language: English
• Published: 11.01.1989
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CINEMATOGRAPHY; COLOUR PRINTING; ELECTROGRAPHY; HOLOGRAPHY; LINING MACHINES; MATERIALS THEREFOR; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS

PURPOSE:To shorten the exposure time of the titled sheet by directly projecting a light coming from an exposure source to a microcapsule, and again by exposing the microcapsule reflecting by a substance having high photoreflectance, thereby radiating the light coming from the exposure source on the both surfaces of the microcapsule. CONSTITUTION:The image light of a display image is radiated on the microcapsule layer 2 of the titled sheet 1 through a lens 6 and a color filter 7 to expose said sheet. The irradiated image light reaches to a light reflecting layer 1b transmitting the microcapsule layer 2, and again allows to make incident on the microcapsule layer 2 by reflecting on said layer 1b. And, also the image light is radiated on the microcapsule layer 2 from the opposite side of said layer 2 which is directly irradiated from a cathode ray tube 5 by the reflecting light coming from said microcapsule layer 2. The microcapsule layer 2 of the titled sheet 1 is directly exposed by the image light coming from the cathode ray tube 5, and at the same time, is exposed by the image light reflected on the light reflecting layer 1b, thereby exposing said layer 2 irradiating said image light on the both surfaces of said layer 2. Thus, as the titled sheet is irradiated with about two times of exposure, comparing with the exposure of the titled sheet which is not provided with the light reflecting layer 1b, the exposure time is shortened.