Color developer for heat sensitive recording, process for...

Details Color developer for heat sensitive recording, process for... Color developer for heat sensitive recording, process for...

2005-04-18

2009-12-15

Hess, Bruce H (Department: 1794)

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified organic electron acceptor other than phenolic resin

C106S031170, C427S150000

Reexamination Certificate

active

07632781

ABSTRACT:
A color developer for heat sensitive recording which comprises 0.5 to 5 parts by mass of 3-allyl-4-allyloxy-4′-hydroxydiphenylsulfone, 4-allyloxy-3′-allyl-4′-hydroxydiphenylsulfone or a mixture of these compounds per 100 parts by mass of 4-allyloxy-4′-hydroxydiphenylsulfone, a process for producing the color developer and a heat sensitive recording material comprising the color developer in the heat sensitive color forming layer. The color developer and the recording material suppress fog on the background and exhibit excellent color forming property and storage property of image portions.

REFERENCES:
patent: 4636819 (1987-01-01), Nagamoto et al.
patent: 5284978 (1994-02-01), Kinishi et al.
patent: 04-210955 (1992-08-01), None
patent: 2001-261633 (2001-09-01), None
patent: 2001-310561 (2001-11-01), None
patent: 2002-030064 (2002-01-01), None
patent: 2004-209727 (2004-07-01), None
Office Action (Notice of Reason(s) of Rejection) dated Jul. 3, 2009 issued by the Japanese Patent Office for Japanese patent application.

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