摘要:
An image forming material formed on a paper sheet and containing a color former, a developer and a decolorizer, is decolored by heating of the image forming material, contacting the image forming material with a solvent optionally containing a decolorizer, and removing a residual solvent from the paper sheet.
摘要:
A decolorizable image forming material comprising a color former, a developer and a decolorizer, the decolorizer comprising a highly amorphous phase separation inhibitor and a slightly amorphous phase separation inhibitor. A cyclic sugar alcohol is used as the highly amorphous phase separation inhibitor, and a non-aromatic cyclic compound having five-membered or larger ring substituted by a hydroxyl group or a derivative of a cyclic sugar alcohol is used as the slightly amorphous phase separation inhibitor. The decolorizable image forming material can be decolored easily after image formation by a solvent and the decolored state of which can be maintained stably, thereby making it possible to reuse paper sheets.
摘要:
A decoloring apparatus for an image forming material comprising means for bringing a solvent into contact with an image forming material formed on a paper sheet and containing a color former, a developer and a decolorizer, and means for removing a residual solvent from the paper sheet.
摘要:
Decolorizable ink consisting of an ink composition dispersed in a solvent, the ink composition comprising a color former, a developer and a decolorizer, wherein the color former and developer are in a colored state by interaction between them and the decolorizer has a property to dissolve preferentially the developer when the ink composition is melted.
摘要:
An erasable image forming material includes a color former, a developer, and a decolorizer and is erasable by contact with an erase solvent. Free energy &agr; required for the decolorizer and the developer to form a complex and free energy &bgr; required for the color former and the developer to form a complex have a relationship represented by &agr;≦&bgr;≦10 Kcal/mol.
摘要:
An erasable image forming material includes a color former, a developer, a binder resin, and a polymer decolorizer having an electron donating group capable of physically or chemically adsorbing the developer. This polymer decolorizer is, e.g., a polymer compound having a sugar skeleton, representatively starch. This image forming material can form sharp images and erase images by heat or a solvent to achieve a good erased state.
摘要:
A method of decoloring an image formed on a paper sheet by using an image forming material containing a color former, a developer and a decolorizer, comprising the steps of bringing a solvent into contact with the image forming material for decoloring the image, and removing the residual solvent from the paper sheet.
摘要:
A liquid crystal device including two substrates each having a liquid crystal orienting film formed on each opposing surface, and a liquid crystal sealed between these substrates, wherein a liquid crystal orienting film formed on the surface of at least one of the two substrates is constituted by a polyamino acid film having a rigid structure and a dipole moment that is bound to the surface of the substrate through a layer of surface treating agent.
摘要:
A liquid crystal display device comprises two substrates opposed to each other, a comb-shaped wall electrode formed to correspond to each pixel of an array defined by vertical and horizontal wires formed on the substrate, the comb-shaped wall electrode having a plurality of elemental electrodes, major surfaces of each of the elemental electrodes being substantially perpendicular to the surfaces of the two substrates, and the major surfaces of adjacent ones of the elemental electrodes constituting counter electrodes to each other, and a liquid crystal filled in a gap of the comb-shaped wall electrode provided between the two substrates.
摘要:
Impurities mixed in the liquid crystal device are detected by a method comprising the steps of applying a DC electric field to a liquid crystal device having a liquid crystal layer between a pair of electrodes, and irradiating the liquid crystal device with light within a specific wavelength, while an AC pulsed electric field is being applied to the liquid A crystal device after the DC electric field is removed to obtain a field response curve corresponding to time-dependent change of light intensity during a cycle of the AC pulsed electric field by time-resolved measurement of light passed through the liquid crystal layer, wherein the impurities are detected on the basis of specific quantitative change in the electric field response curve as a function of elapsed time after the DC electric field is removed.