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. 06, 2022
Filed:
Mar. 02, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Yoshihiro Ueno, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27N 3/04 (2006.01); B27N 1/02 (2006.01); D04H 1/60 (2006.01); D04H 1/732 (2012.01); D21H 17/33 (2006.01);
U.S. Cl.
CPC ...
B27N 3/04 (2013.01); B27N 1/02 (2013.01); D04H 1/60 (2013.01); D04H 1/732 (2013.01); D21H 17/33 (2013.01);
Abstract
A sheet manufacturing method includes a mixing step of mixing a fiber and a resin powder in air, and a sheet forming step of accumulating and heating a mixture mixed in the mixing step to form a sheet. The resin powder has a volume average particle diameter of equal to or less than 50 μm, and an absolute value of an average charging amount in a range of 5 (μC/g) to 40 (μC/g).