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. 04, 2007
Filed:
Nov. 06, 2000
Koji Tatsuki, Kawagoe, JP;
Hideo Takamoto, Chiba, JP;
Kazuharu Seki, Tokyo, JP;
Kimoto Co., Ltd., Tokyo, JP;
Abstract
A sheet for a writing board and a reflection type screen has excellent writability and erasability when used as a writing board and excellent anti-glare property without hot spots when used as a reflection type screen. This sheet includes a resin layer presenting a writing surface with unevenness having an arithmetical mean deviation (JIS-B-0601) of 1.0-4.0 μm and a mean spacing of profile irregularities (JIS-B-0601) between adjacent protrusions of 30-300 μm formed by embossing. The resin layer preferably contains as an ultraviolet ray curable resin. Since the unevenness is formed on the resin layer by embossing, ink does not penetrate the resin layer and hence the sheet has excellent erasability.