3results about How to "High color density" patented technology

The invention relates to erasable color thermo-sensitive paper and a preparation method thereof.The erasable color thermo-sensitive paper comprises a protective layer, a thermo-sensitive coating and a base material layer, and the thermo-sensitive coating comprises a yellow thermo-sensitive coating, a first middle layer, a magenta thermo-sensitive coating, a second middle layer and a cyan thermo-sensitive coating which are sequentially arranged from top to bottom; the protective layer is arranged on the yellow thermosensitive coating, and the cyan thermosensitive coating is arranged on the base material layer; the color developing temperature difference among the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating is not less than 25 DEG C; the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating are respectively added with a heat conduction auxiliary agent. According to the erasable color thermo-sensitive paper, heat is isolated through the middle layer; the color developing temperature difference of the yellow thermosensitive coating, the magenta thermosensitive coating and the cyan thermosensitive coating is not less than 25 DEG C, so that full-color printing can be realized by superposing three colors; and by adding the heat-conducting auxiliaries with different particle sizes, a more efficient erasing effect is obtained.

The invention discloses a yellow plastic color master batch which comprises the following components in parts by weight: 880-960 parts of an ABS terpolymer, 20-40 parts of polyethylene low-molecular wax, 5-15 parts of ethylene bis stearamide, 5-15 parts of zinc stearate, 20-40 parts of titanium dioxide, 1-5 parts of iron oxide yellow, 1-5 parts of macromolecular yellow, 1-5 parts of permanent yellow, 1-5 parts of a flame retardant and 1-5 parts of an antioxidant. The yellow plastic color master batch provided by the invention solves the technical problems of poor color concentration, poor flame retardance and poor oxidation resistance of the traditional yellow plastic master batch.

This invention relates to the field of thermal sublimation printing technology, specifically to a thermal sublimation ribbon, a re-transfer film, and a transfer method suitable for printing PET ID cards. The ribbon has a base coating layer on one side of the substrate, and a dye layer on the base coating layer; it also includes an adhesion promoting layer; the adhesion promoting layer includes a release layer and an adhesive layer, with the release layer disposed on one side of the substrate and the adhesive layer disposed on the release layer. When this ribbon is used in conjunction with the re-transfer film, the pattern can be printed onto the re-transfer film first through the dye layer, and then the adhesion promoting layer can be printed onto the pattern layer. The release layer ensures complete transfer of the adhesion promoting layer, and the adhesive layer improves the adhesion of the pattern to the PET ID card, increasing the color density and durability of the ID card image.