IMAGE FORMING INSTRUMENT

• Main Author: INOUE KAZUE
• Format: Patent
• Language: English
• Published: 26.03.1993
• Subjects: AUXILIARY PROCESSES IN PHOTOGRAPHY; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES; PHOTOGRAPHY; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PURPOSE:To obtain an instrument for which a small-size laser such as a semiconductor laser element can be used so that an image forming instrument can be made small in size at low cost. CONSTITUTION:This image forming instrument is used to write or erase images on an optical recording medium consisting of an optical recording layer formed on a resin substrate. The optical recording layer consists of a mixture of polymers and a photochromic compd. such as diaryl ethene deriv. excellent in thermal stability and durability against repeated use. This instrument has a transparent heating part 3 which heats the optical recording medium, a transparent head means 5 which can be abutted on the recording medium, and a writing means 1 which irradiates the recording medium with light 21 through the transparent head means 5 to partly change the color of the recording layer, and an erasing means 2 which irradiates the optical recording medium with light 22 through the transparent head means 5 to recover the initial color in the area where the color is changed.