Recording and Multiplication of Images

Studies of polymeric films based on some phenoxyanthraquinones showed that the value of their light sensitivity depended on the structure of the photochromic compound and that the wavelength of the activating irradiation was in the range of 

The number of cycles for rewriting images on the same site of a film with photochromic anthraquinones amounted to 10.29 

Films based on photochromic anthraquinones may be used as intermediate carriers of optical information. Owing to the low light sensitivity of these films to visible irradiation, it is possible to produce more than 100 prints on photographic paper using a standard enlarger.29 

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In chapter 7, special emphasis has been placed on the synthesis of representative polycyclic quinones and their photochromic behavior, including the spectral, kinetic, and fatigue characteristics of such systems. Potential applications are focused on recording and multiplication of images, optical memories, and gradation masking. 

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