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. 27, 2007
Filed:
Feb. 04, 2004
Akiko Kitami, Hino, JP;
Kazuo Asano, Hino, JP;
Akiko Kitami, Hino, JP;
Kazuo Asano, Hino, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
A droplet ejection apparatus provided with: a drive signal generator for generating drive signals including a plurality of drive pulses; a drive pulse selector for selecting drive pulses in accordance with a print datum of each pixel; and a head for ejecting a droplet from a nozzle provided corresponding to a channel, by changing a volume of the channel according to the drive pulses selected, wherein, the drive signal includes a micro-vibration pulse as one of the drive pulses to generate a micro-vibration of meniscus in the nozzle in such a degree that the droplet is not ejected, said micro-vibration pulse being formed of rectangular waves which include at least one micro-vibration pulse having a pulse width of (2n) AL, where AL is ½ of the acoustic resonance period of the channel, and n is an integer not smaller than 1.