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:
Nov. 02, 2004
Filed:
Jan. 29, 2002
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
A minute droplet forming apparatus comprises a nozzle for storing therewithin a liquid for forming a droplet ; a substrate , disposed so as to face the tip of the nozzle , for mounting the droplet dropped from the tip of the nozzle ; and a pulse power supply for applying a pulse voltage between an electrode arranged in the liquid within the nozzle and the substrate . After a liquid column is formed by projecting the liquid from the nozzle tip by applying the pulse voltage between substrate and the electrode , a nickel piece disposed within the nozzle is moved to the tip part of the nozzle by an XYZ stage by way of a magnet , so as to enhance the fluid resistance in the nozzle tip part, thereby causing a setback force for returning the liquid into the nozzle , by which the droplet is isolated from the liquid column