The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 1992
Filed:
Jul. 10, 1990
Applicant:
Inventors:
Keisuke Takuma, Ohmuta, JP;
Tsukasa Ohyama, Ohmuta, JP;
Tamio Mikoda, Ohmuta, JP;
Isamu Ghoda, Kobe, JP;
Hitoshi Koshida, Nishinomiya, JP;
Akitoshi Igata, Ohmuta, JP;
Assignee:
Mitsui Toatsu Chemicals Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B41M / ;
U.S. Cl.
CPC ...
503227 ; 428195 ; 428913 ; 428914 ;
Abstract
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.