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:
Oct. 01, 2024
Filed:
Feb. 10, 2021
Hiroki Kobayashi, Kanagawa, JP;
Hiroki Kobayashi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An active energy curable white ink composition contains a nitrogen atom-containing monofunctional monomer (A), a nitrogen atom-free monofunctional monomer (B) having a glass transition temperature of 15 degrees or higher, a polyfunctional monomer (C), a polymerizable oligomer (D), an acylphosphine oxide-based polymerization initiator (E), and a white pigment (F), wherein the proportion of (D) in the active energy curable white ink composition is 0.2% by mass or less, the proportion of (E) in the active energy curable white ink composition is from 6% to 10% by mass, and the proportion of (F) in the active energy curable white ink composition is from 12% to 17% by mass.