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:
Apr. 10, 2018
Filed:
Nov. 14, 2016
Kiminori Masuda, Tokyo, JP;
Satomi Araki, Kanagawa, JP;
Michihiko Namba, Kanagawa, JP;
Hiroaki Takahashi, Kanagawa, JP;
Amika Sagara, Tokyo, JP;
Kiminori Masuda, Tokyo, JP;
Satomi Araki, Kanagawa, JP;
Michihiko Namba, Kanagawa, JP;
Hiroaki Takahashi, Kanagawa, JP;
Amika Sagara, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet recording method includes applying one or more drive pulses to a pressure generating device of a recording head including a nozzle plate, a liquid chamber, and discharging droplets of ink from the nozzle. Also, the following conditions 1 and 2 are satisfied. 1. The ink has a dynamic surface tension 10 mN/m or more greater than the static surface tension of the ink when the surface life length is 15 ms and 3 mN/m or more greater than the static surface tension of the ink when the surface life length is 1,500 ms, as measured by maximum bubble pressure technique at 25 degrees C. 2. At least one of the drive pulses has a voltage changing portion to draw in the ink, the voltage changing portion having a changing time of one third or more of the resonance period of the liquid chamber.