Linerless labels

Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified color-former

Reexamination Certificate

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C503S200000, C503S209000, C503S217000

Reexamination Certificate

active

07125824

ABSTRACT:
A linerless label system comprising pressure adhesive coating, release coating and thermal imaging coating is described. The thermal imaging coating contains as one of its components the compounds of the formula (I)wherein R1and R2are selected from methyl, ethyl, aryl, aryl substituted with methyl, ethyl, methoxy, ethoxy or halogen, benzyl or benzyl with phenyl substituted with methyl, ethyl, methoxy, ethoxy or halogen,R3,R4,R5and R6are selected from hydrogen, halogen, methyl, ethyl, methoxy, ethoxy, phenyl,R7and R8are each independently selected from methyl or ethyl,R9is selected from hydrogen, methoxy or ethoxy,R10is selected from hydrogen, dimethylamino or diethylamino,R11is methyl.The imaged linerless label according to the invention has been a bar reflectance of less than 20 at 670 nanometers, a print control contrast signal of at least 80 and a BNL background of at least 75%.

REFERENCES:
patent: 4470057 (1984-09-01), Glanz
patent: 5200519 (1993-04-01), Mathiaparanam
patent: 5218127 (1993-06-01), Mathiaparanam
patent: 5292713 (1994-03-01), Stenzel et al.
patent: 5547738 (1996-08-01), Mitchell et al.
patent: 5804528 (1998-09-01), Aoki et al.
Article Entitled Principles of Nonimpact Printing, Second Edition by Jerome L. Johnson.
Article Entitled “Near Infrared”: Enhanced Direct Thermal Media Needed for Growing Scanning Segment dated May 26, 1994.
Japanese Patent Application No. H6 [1994]-135156 Published May 17, 1994.
Japanese Patent Application No. Hei 8[1996]-282129 Published Oct. 29, 1996.

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