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:
Jun. 22, 2021
Filed:
Mar. 13, 2019
Takashi Tamai, Kanagawa, JP;
Dongsik Jang, Tokyo, JP;
Atsufumi Hanazawa, Tokyo, JP;
Satoshi Takahashi, Kanagawa, JP;
Yoshiki Yanagawa, Telford, GB;
Tsutomu Maekawa, Ibaraki, JP;
Yukitaka Watarai, Ebina, JP;
Takashi Tamai, Kanagawa, JP;
Dongsik Jang, Tokyo, JP;
Atsufumi Hanazawa, Tokyo, JP;
Satoshi Takahashi, Kanagawa, JP;
Yoshiki Yanagawa, Telford, GB;
Tsutomu Maekawa, Ibaraki, JP;
Yukitaka Watarai, Ebina, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An ink and processing liquid set contains a processing liquid to be applied to a recording medium, the processing liquid including a multivalent metal salt and an ink to be applied to an area of the recording medium where the processing liquid has been applied, the ink including a urethane resin, a styrene-acrylic resin, and a pigment, wherein the following relations are satisfied: 0.5≤B/C≤0.7, where B represents a static surface tension of the ink and C represents a static surface tension of the processing liquid; and 0.5≤E/D≤0.9, and 35 (mN/m)≤E≤55 (mN/m), where D represents a dynamic surface tension at 15 ms of the processing liquid and E represents a dynamic surface tension at 1500 ms of the processing liquid.