Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-05-27
2008-05-27
Niland, Patrick (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C106S031270, C106S031280, C523S161000, C524S261000, C524S262000, C524S588000, C528S038000
Reexamination Certificate
active
07378458
ABSTRACT:
The invention provides a method for preparing an ink having constituents of a water-soluble dye having a water-soluble solubilizing group of at least one of a sulfonic group and a carboxyl group, water, a water-soluble substance that is condensation-polymerized in the absence of the water, a water-soluble medium and an additive including at least one of an organic acid salt and an inorganic acid salt. This method includes a first mixing step of mixing at least the dye and the water-soluble substance out of the constituents of the ink excluding the additive; a second mixing step of mixing a mixture obtained in the first mixing step and the additive; and a pH adjusting step, performed before the second mixing step, of preparing a solution including the mixture or a solution including the additive while adjusting the solution to a given pH range by using a pH adjuster.
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Arase Hidekazu
Itoh Masashi
Kusakata Shigeru
Matsuda Tsutomu
Soga Mamoru
Harness & Dickey & Pierce P.L.C.
Matsushita Electric - Industrial Co., Ltd.
Niland Patrick
Ricoh & Company, Ltd.
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