IP Library Granted Patent US 7,279,033
Granted Patent B2
US 7,279,033 · App. 10/936,548 · Granted Oct 9, 2007

Ink jet and ink jet recording method

Assignee: Fujifilm Corporation
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Quick Facts
Patent No.
US 7,279,033
App. No.
10/936,548
Granted
Oct 9, 2007
Kind
B2
Abstract

An ink-jet ink containing a colorless, water-soluble, planar compound having more than ten delocalized pi-electrons per molecule.

Claims (7)

1. An ink-jet ink containing a colorless, water-soluble, planar compound having more than ten delocalized pi-electrons per molecule, wherein the compound comprises two or more triazine rings per molecule.

2. The ink-jet ink according to claim 1 which contains a colorant selected from a phthalocyanine colorant, an anthrapyridone colorant, a monoazo colorant, a disazo colorant, a trisazo colorant, and a tetrakisazo colorant.

3. The ink-jet ink according to claim 1 , wherein the water-soluble planar compound is a non-fluorescent compound having an absorption peak at a wavelength of 350 nm or shorter and a molar absorptivity of 10,000 or less.

4. The ink-jet ink according to claim 1 , wherein the water-soluble planar compound is a non-fluorescent compound having an absorption peak at a wavelength of 320 nm or shorter and a molar absorptivity of 10,000 or less.

5. The ink-jet ink according to claim 1 , wherein the water-soluble planar compound has a sulfo group.

6. An ink jet recording method comprising forming an image with the ink-jet ink according to claim 1 .

7. A method for reducing bronzing in ink jet recording comprising forming an image with an ink-jet ink comprising a colorless, water-soluble, planar compound having more than ten delocalized pi-electrons per molecule, wherein the compound comprises two or more triazine rings per molecule.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 19, 2007
From: FUJIFILM HOLDINGS CORPORATION
To: FUJIFILM CORPORATION
Reel/Frame 019193/0322 →
CHANGE OF NAME AS SHOWN BY THE ATTACHED CERTIFICATE OF PARTIAL CLOSED RECORDS AND THE VERIFIED ENGLISH TRANSLATION THEREOF Recorded Feb 12, 2007
From: FUJI PHOTO FILM CO., LTD.
To: FUJIFILM HOLDINGS CORPORATION
Reel/Frame 018942/0958 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2005
From: YABUKI, YOSHIHARU; TAGUCHI, TOSHIKI; SUZUKI, MAKOTO
To: FUJI PHOTO FILM CO., LTD.
Reel/Frame 016224/0039 →
Priority Claims (2)
JP P.2003-316792 · Sep 9, 2003 · national
JP P.2004-259699 · Sep 7, 2004 · national
Continuity (1)
Related Publication 20050109236A1 · May 26, 2005