Photocomposing apparatus
AssigneeThe Monotype Corporation Limited
InventorsHoward Raymond Baylis, Roger Alan Edwards
Life of this patent
Estimating the term…
Abstract
Photocomposing apparatus comprising a projection system for projecting optical images selected from a character matrix onto a photosensitive recording member by way of a mirror which is rotatable to displace projected images with respect to the recording member. The projection system includes a wide-angle lens for focussing the optical images onto a substantially flat image plane coincident with the recording member, and a zoom lens system arranged to produce a first fixed image which provides, by the action of the rotatable mirror, an object for the wide-angle lens which is selectively positionable in a substantially flat object plane.
Claims9
Photocomposing apparatus comprising a projection system for projecting optical images of characters selected from a matrix of master characters onto a photosensitive recording member, wherein the projection system includes:
- a mirror which is rotatable to displace projected optical images with respect to the recording member;
- a wide angle lens for focussing the projected optical images onto a substantially flat image recording plane coincident with the recording member;
- means for illuminating the character matrix and producing a light beam bearing images of the selected characters;
- and means for focussing said light beam to produce a first fixed image of the selected characters which provides, by the action of said rotatable mirror, a second image forming an object for the wide-angle lens which is selectively positionable in a substantially flat object plane.
Dependencies are inferred from the claim text.