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:
Dec. 29, 2009
Filed:
Apr. 11, 2008
Takuro Sekiya, Kanagawa, JP;
Takuro Sekiya, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid jet head includes a nozzle element having nozzles from which a recording liquid is ejected to a recording medium, wherein the recording liquid contains fine particles of a pigment, wherein the fine particles of the pigment contained in the recording liquid are no less than 1% by weight, wherein each of the nozzles has an area that is less than 500 μm, wherein each of the fine particles of the pigment has a diameter satisfying a relation of 0.0005≦Dp/Do≦0.02, wherein 'Dp' represents the diameter of each of the fine particles of the pigment and 'Do' represents a size of each of the nozzles, wherein when the nozzle element ejects the recording liquid onto the recording medium, a contact angle of the recording liquid stops changing when 100 ms or less elapses after the recording liquid contacts the recording medium, wherein the fine particles of the pigment are smaller than fibers of the recording medium, wherein the fine particles of the pigment are smaller than spaces between the fibers of the recording medium.