摘要:
A laser rewriting apparatus positioned on one side or the other side of a conveyance path through which a to-be-conveyed object on which a thermoreversible recording medium is affixed is conveyed in a predetermined conveyance direction. The laser rewriting apparatus emits laser light to the thermoreversible recording medium and rewrites an image. The laser writing apparatus includes an image erasing apparatus that emits laser light to the thermoreversible recording medium and erases the image from the thermoreversible recording medium; and an image recording apparatus positioned on the predetermined conveyance direction downstream side of the image erasing apparatus and records a new image by emitting laser light to the thermoreversible recording medium. The image erasing apparatus and the image recording apparatus have the respective laser light emitting parts from which the laser light is emitted at ends on the same side with respect to the predetermined conveyance direction.
摘要:
A method for erasing an image including irradiating an image formed on a thermoreversible recording medium with a laser light having a wavelength of 700 nm to 1,500 nm so as to erase the image, wherein an energy density of the laser light is in a range of the energy density which can erase the image and more than a center value of the range, wherein the thermoreversible recording medium includes a support, and a thermoreversible recording layer on the support, and wherein the thermoreversible recording layer contains a leuco dye serving as an electron-donating color-forming compound and a reversible developer serving as an electron-accepting compound, in which color tone reversibly changes by heat, and at least one of the thermoreversible recording layer and a layer adjacent to the thermoreversible recording layer contains a photothermal conversion material, which absorbs the light and converts the light into heat.
摘要:
An image processing method including: measuring a distance between a medium where an image is to be recorded and an image processing apparatus which stores a relation between irradiation energy and distance previously measured; calculating an irradiation energy from the distance measured in the measuring based on the relation stored in the image processing apparatus; and irradiating and heating the medium with laser beams having the irradiation energy obtained in the calculating to record an image in the medium.
摘要:
An image erasing apparatus including: a semiconductor laser array in which a plurality of semiconductor laser light sources are linearly aligned; a width direction collimating unit provided on an output surface of the semiconductor laser array, and configured to collimate, in a width direction, broadening of laser beams emitted from the semiconductor laser array so as to form a linear beam; and a length direction light distribution controlling unit configured to control a length of a major axis of the linear beam to be longer than a length of a major axis of an emission part of the semiconductor laser array, and to attain uniform light distribution in the length direction of the linear beam; wherein the linear beam, which has the major axis whose length is longer than the length of the major axis of the emission part of the semiconductor laser array and uniform light distribution in the length direction thereof, is to be applied to and heat a thermoreversible recording medium, in which any of transparency and color tone thereof reversibly changes depending on temperature, so as to erase an image recorded on the thermoreversible recording medium.
摘要:
A thermosensitive recording medium including a support; a layer containing a photothermal conversion material, formed over a surface of the support; and an oxygen blocking layer formed over a surface of the layer opposite to a surface thereof over which the support is formed, wherein the layer further contains a resin, which is in a cross-linked state, and the photothermal conversion material absorbs a light having a specific wavelength and converts the light into heat, and wherein the oxygen blocking layer has an oxygen permeability of 0.5 mL/(m2·24 hr·atm) or less at 25° C. and 80% RH.
摘要:
An image processing method including calculating a density of a character to be recorded based on information of a type, size and line width of the character; adjusting an irradiation energy of a laser beam for recording the character based on the density of the character; and irradiating a recording medium with the laser beam whose irradiation energy is adjusted so as to record the character thereon.
摘要:
A method for uniformly erasing an image recorded on a thermo-reversible recording medium. The image erasing apparatus includes an LD array, which emits a laser light whose cross section has a line shape; optics which include at least one cylindrical lens which converts, into a converging light which converges in a width direction, a line-shaped laser light which is emitted from the LD array and emits the converging light; and a mono-axial galvano mirror which deflects the laser light emitted from the optics in the width direction to scan the deflected laser light onto the thermo-reversible recording medium.
摘要:
To provide a thermosensitive recording medium including: a support; an image recording layer on the support; and an inorganic material in particle form as a light-heat conversion material, wherein the inorganic material has a ratio of Y to X, represented by Y/X, of 2 or greater, where X denotes an average value of absorption intensities with respect to light having wavelengths in the range of 400 nm to 700 nm, and Y denotes a maximum value among absorption intensities with respect to light having wavelengths greater than 700 nm but smaller than or equal to 1,200 nm.
摘要:
An image processing method which contains: delivering laser light to a thermoreversible recording medium to heat the medium and record an image thereon, the medium reversibly changing a transparency or tone thereof depending on a temperature thereof; and heating the medium to erase the image recorded thereon, wherein the delivering is carried out using an image processing device containing: a laser light emitting unit; a light scanning unit disposed on a plane onto which laser light emitted from the laser light emitting unit is delivered; a light intensity distribution adjusting unit to change a light intensity distribution of the laser light; and a fθ lens to condense the laser light, and wherein energy of the laser light passing through a peripheric portion of the fθ lens and traveling onto the medium is lower than energy of the laser light passing through a center portion of the fθ lens and traveling onto the medium.
摘要:
A method for erasing an image including irradiating an image formed on a thermoreversible recording medium with a laser light having a wavelength of 700 nm to 1,500 nm so as to erase the image, wherein an energy density of the laser light is in a range of the energy density which can erase the image and more than a center value of the range, wherein the thermoreversible recording medium includes a support, and a thermoreversible recording layer on the support, and wherein the thermoreversible recording layer contains a leuco dye serving as an electron-donating color-forming compound and a reversible developer serving as an electron-accepting compound, in which color tone reversibly changes by heat, and at least one of the thermoreversible recording layer and a layer adjacent to the thermoreversible recording layer contains a photothermal conversion material, which absorbs the light and converts the light into heat.