Mitsui Toatsu Chemicals, Incorporated

Dai Nippon Printing Co., Ltd.

Kansai Paint Company, Ltd.

Tsukasa Ohyama

Keisuke Takuma

Hitoshi Koshida

Isamu Ghoda

Akitoshi Igata

Yoriaki Matsuzaki

Tamio Mikoda

Yasushi Shimokawa

Masayuki M Nakamura

Hiroshi H Eguchi

Ryohei Takiguchi

Komei Kafuku

Kimitoshi Kato

Kazuhiko Murayama

Susumu Kasamatsu

Naozumi Iwasawa

Takao Yamamoto

Ichiro Yoshihara

Hiroshi Aiga

Shizuo Kuroda

Motoko Okuhara

Yasuo Doi

A blue dyestuff represented by the formula (2) ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is independently a hydrogen atom, halogen atom, nitro group, hydroxy group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R.sub.4 and R.sub.5 is independently an alkyl group which may have a substituent, and a heat-sensitive transfer sheet containing the above-mentioned dyestuff.

Heat-sensitive transfer sheet containing blue dyestuff

A dyestuff for heat-sensitive transfer record is here disclosed which can be represented by the formula (1) ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl group having 1 to 8 carbon atoms or cycloalkyl group; R.sub.2 is a hydrogen atom, halogen atom, alkoxy group which may be substituted, alkylthio group which may be substituted or arylthio group which may be substituted; R.sub.3 is a branched alkyl group having 3 to 5 carbon atoms, O-substituted oxycarbonyl group, N-substituted aminocarbonyl group in which an N-substituted group may form a ring, or a substituted or unsubstituted heterocyclic ring having two or more atoms of one or more kinds selected from the group consisting of a nitrogen atom, oxygen atom and sulfur atom; and when R.sub.1 is a hydrogen atom, R.sub.3 is a branched alkyl group having 3 to 5 carbon atoms, or a substituted or unsubstituted heterocyclic ring having two or more atoms of one or more kinds selected from the group consisting of a nitrogen atom, oxygen atom and sulfur atom; and there are also disclosed an ink for heat-sensitive transfer record and a transfer sheet in which the above-mentioned dyestuff is used.

Dye for heat-sensitive transfer record and ink composition for

According to the present invention, there can be provided a black dyestuff for heat-sensitive transfer record comprising at least one orange dyestuff represented by the formula

Dyestuff for heat-sensitive transfer record and transfer sheet

A novel quinophthalone compounds and the 2(2')-ene wherein when R.sub.1 is tautomer a hydrogen atom, tautomer thereof an alkyl group having 2 to 8 carbon atoms which may be branched cycloalkyl group having 5 or 6 ring atoms, R.sub.2 is a hydrogen atom, halogen atom, alkoxy group, alkylthio group, arylthio group which may be substituted, by alkyl of 1 to 4 carbon atoms, each of R.sub.3 and R.sub.4 is a hydrogen atom, alkyl group, N-substituted aminocarbonyl group, or a heterocyclic ring substituent having two or more ring atoms of one or more kinds selected from the group consisting of a nitrogen atom, oxygen atom and sulfur atom, R.sub.3 and R.sub.4 collectively with the ring carbon atoms to which they are attached form an N-substituted maleimide ring; provided however, that when R.sub.1 is a hydrogen atom, is a hydrogen atom, and R.sub.3 is a heterocyclic ring substituent having two or more ring atoms of one or more kinds selected from the group consisting of a nitrogen atom, oxygen atom and sulfur atom are, useful for coloring of polymeric materials, liquid crystal materials and the like.

Quinophthalone compound

High-purity 1,4,5,8-tetraanilidoanthraquinones which are substituted at the p-position of at least one of four anilido benzene rings by a halogen atom are good near infrared rays absorbing filters and at prepared from high purity 1,4,5,8-tetrachloroanthraquinone by reaction with a correspondingly substituted aniline or mixture of anilines in the presence of a salt of an aliphatic carboxylic acid,. a benzyl alcohol derivative and copper ions as reaction catalyst.

Halogenated anthraquinone and their use as near infrared rays absorbing

A magenta dyestuff for sublimation heat transfer recording is here disclosed which is represented by the formula (I) ##STR1## wherein R.sup.1 is an alkyl group or alkoxy group, R.sup.2 is an alkyl group, aryl group or halogenoalkyl group, R.sup.3 is an alkyl group, aryl group, alkoxyalkyl group, cyanoalkyl group, alkylcarboxyalkyl group or halogenoalkyl group, X is a hydrogen atom or alkoxy group, and Y is a hydrogen atom, alkoxy group, alkylcarbonylamino group or alkyl-sulfonylamino group, and this dyestuff is excellent in solubility, ribbon shelf stability, dye-fixing properties, durability and light resistance.

Transfer sheet for sublimation recording

Disclosed are magenta anthraquinone dyestuffs for sublimation thermaltransfer printing of one of the formulas ##STR1## wherein R is a halogen atom, methyl or methoxy; wherein R.sub.1 is a hydrogen atom, hydroxyl, a halogen atom, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms; and wherein R.sub.2 is a hydrogen atom, a halogen atom, alkyl or 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, with the proviso that in formula (3) either R.sub.1 or R.sub.2 is not a hydrogen atom.

Sublimation thermal transfer printing sheet comprising novel magenta

Dye for heat-sensitive transfer record, ink composition for

A novel 4-carbonyl-substituted coumarin compound which is substituted with a carbonyl group in the position-4 of a 7-alkylaminocoumarin derivative and has photosensitivity in the visible region.

4-carbonyl-substituted coumarin compound

Heat-sensitive sublimation transfer cyan dye and transfer sheet

Disclosed are a novel compound represented by the formula ##STR1## and compositions for sublimation transfer records and for color toners containing the same.

Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate

Sublimation thermaltransfer printing sheet comprising novel magenta

A visible radiation sensitive composition comprising:

Visible radiation sensitive composition containing substituted

Disclosed are a novel compound represented by the formula ##STR1## a composition for sublimation transfer record containing the above-mentioned compound, and a composition for color toner containing the above-mentioned compound.

Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, cyan

A novel negative charge color toner composition for electrostatic charge development having good light resistance and copy sharpness which contains, as a dyestuff in a toner resin, a 1-amino-2-phenoxy- or 2-thiophenoxy-4-hydroxyanthraquinone whose phenoxy or thophenoxy group is substituted and/or a 1,4-diamino-2,3-phenoxyanthraquinone whose phenoxy group is substitited, which can be conventionally produced.

Growing community of inventors

Ohmuta, Japan

Tsukasa Ohyama