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. 12, 2017
Filed:
Nov. 12, 2015
Kiminori Masuda, Tokyo, JP;
Akiko Bannai, Kanagawa, JP;
Takashi Tamai, Kanagawa, JP;
Naoko Kitaoka, Kanagawa, JP;
Kohta Akiyama, Tokyo, JP;
Kiminori Masuda, Tokyo, JP;
Akiko Bannai, Kanagawa, JP;
Takashi Tamai, Kanagawa, JP;
Naoko Kitaoka, Kanagawa, JP;
Kohta Akiyama, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet recording method performed by inkjet recording device including nozzle plate with nozzle to eject droplets of ink; recording head including liquid chamber with which the nozzle is in communication, and pressure-generating unit configured to generate pressure in the liquid chamber; and signal-generating unit configured to generate signal applied to the pressure-generating unit, and allowing the droplets of the ink to eject by the pressure generated by the pressure-generating unit according to the signal, wherein the ink has static surface tension of 18.0 mN/m to 27.0 mN/m at 25° C., the ink has receding contact angle on the nozzle plate of less than 50°, the signal has two-step pull pulse for pulling the ink into the nozzle in two-step manner within one printing unit cycle, and the method includes pulling the ink located in proximity to nozzle outlet into the nozzle of the two-step pull pulse, to form meniscus at predetermined position.