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. 23, 2003
Filed:
Aug. 30, 2002
Takahiro Yamada, Hitachinaka, JP;
Kunio Satou, Hitachinaka, JP;
Shinya Kobayashi, Hitachinaka, JP;
Hitoshi Kida, Hitachinaka, JP;
Lee Chahn, Hitachi, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
As shown in FIG. ( ), an electric field is generated at timing T at which an ink droplet is divided, end moves the negative ions toward a main ink portion As shown in FIG. ( ′), a resultant main ink droplet M has an increased charging amount of −3 q, and a satellite ink droplet S has a decreased charging amount of −6 q. When the main ink droplet M and the satellite ink droplet S have the mass of 1 m and Qs, respectively, then the relative charging amounts of the main ink droplet M and the satellite ink droplet S are both −3. Hence, the deflection amount of the satellite ink droplet S is approximately equal to the deflection amount of the main ink droplet M. Accordingly, the satellite ink droplet S and the rain ink droplet M impact the recording sheet on the same spot or on the extremely close spots, thereby forming a single dot.