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:
Mar. 13, 1984
Filed:
May. 03, 1982
Yutaka Ebi, Tokyo, JP;
Takao Fukazawa, Tokyo, JP;
Toshio Kawakubo, Tokyo, JP;
Koichiro Jinnai, Tokyo, JP;
Masanori Horike, Tokyo, JP;
Kyuhachiro Iwasaki, Tokyo, JP;
Chuji Ishikawa, Tokyo, JP;
Toshitaka Hirata, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In an ink jet printing apparatus wherein an ink ejection head is loaded on a carriage and, while the carriage moves relative to a sheet of paper, ink droplets are ejected from the head to be charged and deflected to impinge on the sheet of paper, a shape or a position of a conductive member carried on the carriage is varied to develop an electric field which is asymmetrical with respect to a predetermined plane in which charged ink droplets coming out from a charging electrode are to be deflected. The conductive member is constituted by a cover of the carriage, a shield plate, a gutter, a compensating electrode plate, a deflection electrode or the like.