Light decolorizable recording material, ink and toner
AssigneeShowa Denko K.K.
InventorsKatsumi Murofushi, Yoshikazu Hosada
Life of this patent
Estimating the term…
Abstract
A light decolorizable recording material comprising a colored dye having absorptions in the visible light region and a boron compound represented by the general formula (1), ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently represents an alkyl, aryl, allyl, aralkyl, alkenyl, alkynyl, silyl, heterocyclic, substituted alkyl, substituted aryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl or substituted silyl group, and Z.sup.+ represents a quaternary ammonium, quaternary pyridinium, quaternary quinolinium or phosphonium cation.
Claims10
A decolorizable toner consisting of a light decolorizable recording material said recording material consisting of:
- (i) at least one of a wax and a resin;
- (ii) an electrically neutral dye having absorptions in the visible light region;
- and
- (iii) a boron compound represented by the general formula (1):
- ##STR120## wherein R.sub.1, R.sub.2 and R.sub.3 each independently represent an alkyl group, an aryl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted aryl group, a substituted silyl group, or a heterocyclic group;
- R.sub.4 represents an alkyl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted silyl group, or a heterocyclic group;
- and Z.sup.+ represents a quaternary ammonium cation, a quaternary pyridinium cation, a quaternary quinolinium cation or a phosphonium cation.
A light decolorizable recording material consisting of:
- (i) at least one of a wax and a resin;
- (ii) an electrically neutral dye having absorptions in the visible light region;
- and
- (iii) a boron compound represented by the general formula (1):
- ##STR121## wherein R.sub.1, R.sub.2 and R.sub.3 each independently represent an alkyl group, an aryl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted aryl group, a substituted silyl group, or a heterocyclic group;
- R.sub.4 represents an alkyl group an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted silyl group, or a heterocyclic group;
- and Z.sup.+ represents a quaternary ammonium cation, a quaternary pyridinium cation, a quaternary quinolinium cation or a phosphonium cation.
A light decolorizable ink consisting of:
- (i) at least one of a wax and a resin in combination with an agent selected from the group consisting of a) a solvent and b) a solvent and a drying oil;
- (ii) an electrically neutral dye having absorptions in the visible light region;
- and
- (iii) a boron compound represented by the general formula (1):
- ##STR122## wherein R.sub.1, R.sub.2 and R.sub.3 each independently represent an alkyl group, an aryl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted aryl group, a substituted silyl group, or a heterocyclic group;
- R.sub.4 represents an alkyl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a substituted alkyl group, a substituted silyl group, or a heterocyclic group;
- and Z.sup.+ represents a quaternary ammmonium cation, a quaternary pyridinium cation, a quaternary quinolinium cation or a phosphonium cation.
Dependencies are inferred from the claim text.