The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 1999
Filed:
Jul. 22, 1997
Applicant:
Inventors:
Kazuo Tsubuko, Numazu, JP;
Nobutaka Kinoshita, Mishima, JP;
Tsuyoshi Asami, Yokohama, JP;
Akihiko Gotoh, Susono, JP;
Kazuhiko Umemura, Shizuoka-ken, JP;
Kazuyo Mizuno, Numazu, JP;
Makoto Okawara, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; C09D / ; C09D / ;
U.S. Cl.
CPC ...
427288 ; 427466 ; 427469 ; 427485 ;
Abstract
An ink composition contains a carrier medium and charged particles containing a coloring agent, which ink composition satisfies at least one condition of condition A or B: condition A that the specific charge quantity of the charged particles is in a range of 10 to 1,000 .mu.C/g with a positive or negative polarity; and condition B that the specific resistance of the ink composition is 10.sup.10 .OMEGA.cm or more; and ink-jet recording methods using the ink composition are proposed.