초록 ▼

Apparatus is provided for use in printing systems wherein regions of rupturable capsule layer are ruptured to release dye that prints an image on an image-receiving sheet. An optical valve member is positioned between a light source and an imaging sheet which has the layer of capsules on its surface

Apparatus is provided for use in printing systems wherein regions of rupturable capsule layer are ruptured to release dye that prints an image on an image-receiving sheet. An optical valve member is positioned between a light source and an imaging sheet which has the layer of capsules on its surface. An image pattern formed on a ferroelectric ceramic plate of the optical valve member by the irradiation of an electron beam together with an ultraviolet light in accordance with each color separation signal is projected onto the imaging sheet. The imaging sheet projected with the image is positioned so that the layer of capsules lies between the imaging sheet and the image-receiving sheet. A pressure roller applies pressure against the imaging sheet and the image-receiving sheet to rupture the capsules between them to thereby transfer the dye to the image-receiving sheet.

대표청구항 ▼

An apparatus for projecting an image pattern with a light component of a specific wavelength onto an image sheet coated with rupturable microcapsules to selectively activate the same according to the projected image pattern to thereby form a latent image on the image sheet, the apparatus comprising:

An apparatus for projecting an image pattern with a light component of a specific wavelength onto an image sheet coated with rupturable microcapsules to selectively activate the same according to the projected image pattern to thereby form a latent image on the image sheet, the apparatus comprising: a light source opposed to the image sheet for selectively producing chromatic light containing light components of different wavelengths and ultraviolet light; projecting means interposed between the image sheet and the light source for projecting an image pattern onto the image sheet, the projecting means including an optical laser receptive of light from the light source and composed of ferroelectric ceramic having variable birefringence, and electron beam irradiating means operative while the optical layer is selectively exposed to the ultraviolet light for irradiating the optical layer with an electron beam to selectively vary the birefringence thereof to form an image pattern thereon; and filtering means interposed between the image sheet and the light source for filtering the chromatic light to selectively pass a light component having a specific wavelength to enable the projecting means to project the image pattern with the selected light component to thereby activate the microcapsules.