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:
Jan. 31, 2006
Filed:
Jun. 28, 2004
Takuro Sekiya, Yokohama, JP;
Kyuhachiro Iwasaki, Fujisawa, JP;
Takuro Sekiya, Yokohama, JP;
Kyuhachiro Iwasaki, Fujisawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Liquid jet recording apparatuses and liquid jet recording methods are provided. Ink droplets are jetted from ink jetting orifices. A cross sectional area of each of the ink jetting orifices is equal to or less than 500 μm. A frequency with which the ink droplets are jetted is controlled to fall within a range from 8 KHz to 40 KHz. A flying velocity of each ink droplet is equal to or greater than 5.2 m/sec. A number of ink droplets which are jetted to form each pixel of the image formed on the recording medium is controlled based on the image data. Each of the ink jetting orifices has a size such that when an amount of ink is jetted, adjacent pixels are separated from each other on the recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image. The image becomes darker based on a number of ink droplets jetted to form each pixel.