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. 27, 1979
Filed:
Apr. 29, 1977
Roger E Mitchell, Minneapolis, MN (US);
Other;
Abstract
A photocomposing machine includes a fiche-like type font having positive and negative character fields, an optical system having a variable magnification and automatic focus compensation for imaging characters on a film strip, and means for conveniently and rapidly selecting individual characters of the positive field of the type font and moving them into alignment with an index light, which simultaneously positions the corresponding negative character in the optical path. A font carrying frame is mounted for simultaneous and direct X and Y movement with respect to the optical path for rapid selection of characters. The object portion of the optical components including the font, and the lens assembly are movable with respect to each other and with respect to the image plane to vary magnification. An automatic focusing cam maintains the focus of the image for all magnifications. The exposure lamp is used in a full power mode for exposure, and in a reduced power mode as the safe light, and means are provided for automatically adjusting the exposure time and the safe light intensity in accordance with different magnifications.