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:
Sep. 04, 2001
Filed:
Feb. 01, 2000
Yasushi Hori, Nagano, JP;
Masaki Hirano, Nagano, JP;
Nagano Japan Radio Co., Ltd., Nagano-Ken, JP;
Abstract
In an electronic blackboard, a print head for drawing an image on the screen sheet is disposed on the upstream side of a read head for reading an image from the screen sheet, with respect to the forward travel direction of the screen sheet. When an image is printed on the screen sheet, the screen sheet is moved in the reverse travel direction. When the read head reads an image on the screen sheet, print stop processing is performed in order to stop printing operation of the print head. If an unerased image is present on the stored face of the screen sheet when printing on the screen sheet is performed, the unerased image on the stored face passes by the read head, because the screen sheet is moved in the reverse travel direction during such a printing operation. If the read head reads an unerased image, the print stop processing is performed in order to stop printing operation of the print head, and warning display processing is performed in order to display a message indicating that an unerased image is present on the screen sheet.