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:
Feb. 24, 1998
Filed:
Dec. 19, 1996
Shinsuke Ito, Suwa-shi, Nagano-ken 392, c/o Seiko Epson Corporation, JP;
Haruyoshi Yamada, Suwa-shi, Nagano-ken 392, c/o Seiko Epson Corporation, JP;
Hirohisa Nakano, Suwa-shi, Nagano-ken 392, c/o Seiko Epson Corporation, JP;
Other;
Abstract
In data projection device, a liquid crystal display panel which forms a data pattern, such as the date, as a translucent area, is positioned in the middle of an optical path located between an ambient light inlet and a photographic film. A data projection shutter which can work in conjunction with a photographic shutter, is positioned on the side of the film relative to a liquid crystal display panel. Manual projection optical path switching device is arranged in a data projection shutter and switches between the state in which the data projection shutter operates in conjunction with the photographic shutter and a state in which an interlock between the data projection shutter and the photographic shutter is released.