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. 30, 2014
Filed:
May. 02, 2011
Ryota Suzuki, Tokyo, JP;
Yuuma Usui, Kanagawa, JP;
Takeo Tsukamoto, Kanagawa, JP;
Hideomi Sakuma, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Manabu Seo, Kanagawa, JP;
Takeshi Orito, Kanagawa, JP;
Ryota Suzuki, Tokyo, JP;
Yuuma Usui, Kanagawa, JP;
Takeo Tsukamoto, Kanagawa, JP;
Hideomi Sakuma, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Manabu Seo, Kanagawa, JP;
Takeshi Orito, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus with a voltage applying unit between a recording head and an intermediate transfer drum is capable of activating polyvalent metal ions inactivated in advance in jetted recording liquid without liquid activators independent of the recording liquid for sufficient flocculation on the drum. When the jetted recording liquid temporarily bridges the head and the drum, electrolysis of the recording liquid by the voltage applied instantly leads to generation of hydrogen ions on the drum, which triggers a sequence of reactions in the recording liquid of activation of polyvalent metal ions, cross-link between the activated polyvalent metal ions and anionic polymer, and increase in viscosity on the drum.