Color image forming method providing balanced color tone

Details Color image forming method providing balanced color tone Color image forming method providing balanced color tone

1990-07-10

1992-04-07

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

346 76PH, 359 43, 359 45, 359 68, 359 96, 430 20, G02F 113

Patent

active

051033321

ABSTRACT:
A color image forming method provides clear color images with good color balance by thermally controlling a thermosensitive medium, such as polymer liquid crystal. The medium is capable of reversibly assuming optical states of being transparent and of scattering light, and allows picture-element display areas in at least two colors to be composed on a surface thereof. Picture elements within color areas are selected if they correspond to the color whose spectral transmission center is, among those of the colors to be displayed, closest to the longest wavelength involved. Heat is applied such that the maximum haze degree of the selected picture elements is greater than that of picture elements corresponding to any of the other colors.

REFERENCES:
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patent: 4378302 (1983-03-01), Aftergut et al.
patent: 4396251 (1983-08-01), Mukoh et al.
patent: 4702558 (1987-10-01), Coles et al.
patent: 4734359 (1988-03-01), Oguchi et al.
patent: 4777492 (1988-10-01), Ohnishi et al.
patent: 4965591 (1990-10-01), Kurabayashi et al.
patent: 5059000 (1991-10-01), Kaneko et al.

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