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:
Oct. 22, 2002
Filed:
Jan. 25, 2001
Takuya Iwamura, Tokyo, JP;
Masakazu Okuda, Tokyo, JP;
Fuji Xerox Co., Ltd., , JP;
Abstract
Ink stored in an ink tank passes through a supply path and supply port and fills a pressure chamber A piezoelectric actuator vibrates a vibration plate by receiving a voltage from a driving voltage control unit The volume of the pressure chamber is changed by vibrating the vibration plate to eject the ink in the pressure chamber from a nozzle toward to the sheet The diameter of the nozzle is set within the range of 20 to 40 &mgr;m, and an ink viscosity is set within the range of 2 to 6 mPa·s. With these settings, a fine droplet having the total diameter of 25 &mgr;m or less can be stably ejected, thereby obtaining high quality image. In addition, a driving waveform voltage is corrected in accordance with the ambient temperature detected by a temperature detection unit and the ink viscosity is set within the range of 2 to 15 mPa·s, thereby keeping high image quality.