scispace - formally typeset
Patent

Thermo-sensitive recording material

Ishige Sadao, +2 more
TLDR
In this article, a naphthoic acid derivative was added to a thermo-sensitive recording material containing an electron-donating leuco dye and an electron accepting compound.
Abstract: 
PURPOSE:To obtain thermo-sensitive recording material, the density of color formation thereof and the sensitivity of color formation thereof are sufficient and the fastness of the color former contained therein is enough, by adding a naphthoic acid derivative to a thermo-sensitive recording material containing an electron-donating leuco dye and an electron accepting compound. CONSTITUTION:An electron-donating leuco dye, such as a triarylmethane compound, a diphenylmethane compound, a xanthene compound, a thiazine compound, or a spiro-pyrane compound, an electron-accepting compound, such as a phenol compound, and a naphthoate ester of the formula (wherein R is an alkoxy group, an aralkyloxy group, an arylamino group, etc., and a naphthalene ring may have a substituent such as a halogen atom or an alkyl group) or naphthoamide are dispersed separately in water-soluble polymer solutions and mixed, and an inorganic pigment, such as kaoline, and other additives are added to prepare a coating liquid. The liquid is applied onto thick paper.

read more

Citations
More filters
Patent

Thermal recording material

Masayuki Watanabe, +4 more
TL;DR: In this paper, a thermal recording material comprising a support and, sequentially superimposed thereon, an undercoating layer, which contains a pigment and a binder as main components, and thermal recording layer which contains an achromatic or hypochromic basic colorless dye and a developer capable of reacting with the basic colourless dye to thereby realize color formation as the main components.
Patent

Heat-sensitive recording material

Yoshida Mitsuhiro, +2 more
TL;DR: In this paper, a diketone compound was incorporated into a heat-sensitive color-forming layer comprising a colorless or light-colored leuco dye and an organic acid and/or a phenolic substance for developing the color of the dye when being heated.
Patent

Heat sensitive recording material

Hirofumi c, +3 more
TL;DR: In this paper, a heat sensitive recording material comprising a substrate and a heat-sensitive recording layer thereon containing a colorless or light-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith is characterized.
Patent

Device for processing and treating strip-like dough

Borufuramu Rihotsukii Fuauperu, +1 more
TL;DR: In this paper, a placing table with a practically horizontal placing surface was used for kneading band-shaped kneaded noodles. But the placing table was not equipped with a divider.
Patent

Thermal recording material

Tada Akihiro
TL;DR: In this paper, a colorless-light-colored color forming dye, a coupler composed of an acid substance forming a color through the contact of said dye and a color forming sensitivity enhancer are contained.
References
More filters
Patent

Appliance for medical treatment

Yabuki Tetsurou
Patent

Thermal rcording material

Kubo Takashi, +1 more
TL;DR: In this paper, a naphthalene derivative in the thermally color- developing layer of thermally recording material containing colorless or pale leucodye and acidic substance was used to obtain a clear and strong image at the low temperature without sticking phenomenon etc.
Patent

High-sensitivity heat-sensitive recording material

Yoshihiro Ikumi, +3 more
TL;DR: In this article, a heat-sensitive layer capable of forming color when heated, composed of a colorless or light- colored color forming dye compound (e.g., dye compound of fluoran series, spiropyran series), was provided on a support by adding an N-substituted hydroxynaphthoamide compound to the heat sensitive layer.