IMAGE FORMING INSTRUMENT

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 consist...

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Bibliographic Details
Main Author INOUE KAZUE
Format Patent
LanguageEnglish
Published 26.03.1993
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Summary: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.
Bibliography:Application Number: JP19910238025