Appeal No. 2003-1593 4
Application No. 09/729,650
At first impression each of de Saint Roman and Lima-Marques is directed to ink-jet
compositions which are placed on a substrate and result in a colored composition. Upon
careful analysis however, the methods of deposition of the ink-jet composition and
development of the color are incompatible and accordingly uncombinable.
De Saint Roman is directed to a method for the marking and decoration of ceramic
materials. See column 1, lines 7-13. The marking or decoration occurs at temperatures
over 300oC. See column 2, lines 4-5. The ink consists of a solution of a metallic salt
soluble in at least one solvent. See column 2, lines 7-8. The metallic salts include among
a limited number of moieties metallic octoates and neo-decanoates. See column 3, line
11-16. The metallic salts used are those obtained from metals which form colored oxides
or colored combinations with the materials of the substrate upon heating. See column 2,
lines 58-61. After the ink-jet composition is deposited upon un-baked ceramic substrate,
the ceramic is heated to temperatures of from 500oC to 1250oC to convert the metallic
salts into metallic oxides resulting in the desired colorings. See column 4, line 65 to
column 5, line 2.
In contrast, the ink-jet composition of Lima-Marques is directed to a solid or highly
viscous liquid at room temperature. See column 3, lines 7-15. As opposed to de Saint
Roman which requires initial temperatures of over 300oC followed by firing at much higher
temperatures, Lima-Marques ejects the ink at a temperature range of between 110oC and
195oC preferably between 125oC and 155oC. See column 5, lines 56-65, column 3,
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Last modified: November 3, 2007