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:
May. 24, 2022
Filed:
Apr. 30, 2019
Hewlett-packard Development Company, L.p., Spring, TX (US);
Christine E. Steichen, San Diego, CA (US);
Xulong Fu, San Diego, CA (US);
Xiaoqi Zhou, San Diego, CA (US);
Adam Weisman, San Diego, CA (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
A print medium can include a cellulose-based paper substrate with a first surface and a second surface opposite the first surface. The first surface can be treated with an electrically charged treatment layer. An ink-absorbing layer can be positioned on the electrically charged treatment layer. The ink-absorbing layer can include a polymeric binder and surface-activated fumed silica particles. The surface-activated fumed silica particles can include fumed silica particles that are surface-activated with charged multivalent aluminum salt and organosilane reagent. In further detail, an ink-receiving layer can be positioned on the ink-absorbing layer. The ink-receiving layer can include amorphous silica particles, alumina particles, or a combination thereof.