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US 4,141,632 AGranted
Photocomposing machine
OwnerRoger E. Mitchellinventor
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OwnerRoger E. Mitchellinventor
Estimating the term…
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.
In a photocomposing machine of the type having a font of characters, a housing, an optical system for imaging individual ones of said characters on a film or other light sensitive material, and means for selecting which of said characters is to be imaged, the improvement which comprises a fiche-like font having first and second planar fields of characters with corresponding characters in the two fields spaced a predetermined distance apart, a font carrying frame connected within said housing for independent and simultaneous movements in two dimensions in the plane in which the font is held, said housing configured to display one of the font fields while the other is aligned in the optical system, and indexing means positioned in said housing in association with the displayed field spaced from said axis of the optical system according to said predetermined distance, whereby selection of characters with respect to said indexing means and in said first field simultaneously brings the selected character into said optical axis for printing.
A photocomposing machine comprising:
Dependencies are inferred from the claim text.