Title of Invention

INK JET BLACK INK, INK SET, INK JET RECORDING METHOD, INK CARTIDGE, RECORDING UNIT AND INK JET RECORDING APPARATUS

Abstract Disclosed is an inkjet black ink having a desirable color as a black ink for inkjet recording which enables to obtain high ozone resistance, high image density and recovery from fixation. Such an inkjet black ink is suppressed in decomposition of a compound represented by the general formula (I) below or a salt thereof during long-term storage. Specifically disclosed is an inkjet black ink containing at least a compound represented by the general formula (I) below or a salt thereof which is characterized in that it further contains at least one moisture-keeping nitrogen-containing compound and the initial pH of the ink and the pH of the ink after 10 days storage at 60°C are not more than 9.5.
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0463-chenp-2007 form-2.pdf

0463-chenp-2007 others.pdf

0463-chenp-2007 pct search report.pdf

0463-chenp-2007 pct.pdf

0463-chenp-2007 petitions.pdf

0463-chenp-2007 power of attorney.pdf

0463-chenp-2007 abstract.pdf

0463-chenp-2007 claims.pdf

0463-chenp-2007 complete specification as granted.pdf

0463-chenp-2007 correspondence po.pdf

0463-chenp-2007 correspondence others.pdf

0463-chenp-2007 drawings.pdf

0463-chenp-2007 form-1.pdf

0463-chenp-2007 form-18.pdf

0463-chenp-2007 form-3.pdf

0463-chenp-2007 form-5.pdf

0463-chenp-2007 description(complete).pdf

abs 0463-chenp-2007 abstract.jpg

EXAMINATION REPORT REPLY.PDF


Patent Number 237321
Indian Patent Application Number 463/CHENP/2007
PG Journal Number 52/2009
Publication Date 25-Dec-2009
Grant Date 15-Dec-2009
Date of Filing 02-Feb-2007
Name of Patentee CANON KABUSHIKI KAISHA
Applicant Address 3-30-2, SHIMOMARUKO OHTA-KU TOKYO 146-8501.
Inventors:
# Inventor's Name Inventor's Address
1 NAKAMURA, KUNIHIKO C/O CANON KABUSHIKI KAISHA 3-30-2, SHIMOMARUKO OHTA-KU TOKYO 146-8501.
2 SATO, SHIN-ICHI INK JET BLACK INK, INK SET, INK JET RECORDING METHOD, INK CARTIDGE, RECORDING UNIT AND INK JET RECORDING APPARATUS
3 YOSHIZAWA, JUN C/O CANON KABUSHIKI KAISHA, 3-30-2, SHIMOMARUKO, OHTA-KU, TOKYO 146-8501, JAPAN
4 MAFUNE, KUMIKO C/O CANON KABUSHIKI KAISHA, 3-30-2, SHIMOMARUKO, OHTA-KU, TOKYO 146-8501, JAPAN
5 TAKAYAMA, HIDEKI C/O CANON KABUSHIKI KAISHA, 3-30-2, SHIMOMARUKO, OHTA-KU, TOKYO 146-8501, JAPAN
6 SATO, SHIN-ICHI C/O CANON KABUSHIKI KAISHA, 3-30-2, SHIMOMARUKO, OHTA-KU, TOKYO 146-8501, JAPAN
7 OKAMURA, DAIJI C/O CANON KABUSHIKI KAISHA, 3-30-2, SHIMOMARUKO, OHTA-KU, TOKYO 146-8501, JAPAN
PCT International Classification Number C09D11/00
PCT International Application Number PCT/JP05/12703
PCT International Filing date 2005-07-04
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2005-192200 2005-06-30 Japan
2 2004-196445 2004-07-02 Japan