Photocopying – Contact printing – Light boxes
Patent
1993-06-22
1995-06-13
Moses, R. L.
Photocopying
Contact printing
Light boxes
355 27, 355326M, 430138, 347160, 347121, 347115, G04G 1501
Patent
active
054248221
ABSTRACT:
A printer for forming an image by image-wise exposure of a layer of chromogenic microcapsules. The observable image produced may have a three-dimensional topographical structure, such as to form the bumps of the Braille alphabet, or to replicate the surface variations and texture of brush strokes of a conventional painting. A digitized photographic image can be printed in full color, and the photographic image can be computer enhanced. A locally variable attractive field member having an operable surface receives an image in a layer of chromogenic microcapsules. An optomagnetic and/or optoelectric coating on the attractive field member receives light information and generates an attractive field to selectively apply and vary a respective local attractive field associated with discrete locations of the operable surface. A plurality of field attractive microcapsules are attracted to the discrete locations of the operable surface so as to form a layer of field attractive microcapsules which may have a uniform or a varying thickness. The thickness depends on the respective local attractive field associated with discrete locations of the operable surface, and thus depends on the light information impinging on the optomagnetic and/or optoelectric coating. A three-dimensional or two-dimensional microcapsule structure can be formed on the operable surface. This microcapsule structure is image-wise exposed to form a latent image. Upon developing an curing, an observable image is produced which may replicate, for example, the surface variations and texture of a conventionally painted painting, or a photographic image.
REFERENCES:
patent: 4865943 (1989-09-01), Wright
patent: 4996552 (1991-02-01), Sangyoji et al.
patent: 5050531 (1991-09-01), Sakai
patent: 5097286 (1992-03-01), Sakai
patent: 5142337 (1992-08-01), Karidis et al.
Daniels John J.
Moses R. L.
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