Phototypesetting machine
AssigneeAlphatype Corporation
InventorJames Alfred Tidd
Life of this patent
Estimating the term…
Abstract
The phototypesetting machine of this invention includes a character carrier bearing a group of characters arranged for projection by a projection unit. The character carrier is driven at a constant speed so that the characters move consecutively past the projection unit. Position marks and width marks are placed on the character carrier to control the projection of the characters and to provide the width information necessary to set the characters. The character carrier as segmented into replaceable sections, each section bearing at least one distinct alphabet or character group with the width information therefor.
Claims47
In a phototypesetting machine, a character carrier bearing in combination a group of characters, a position mark for each character in said group and a width indication means for each character in said group positioned between the position mark for that character and a position mark for the next preceding character, said width indication means operating to provide character width information and including two spaced marks for each character, the distance between said two marks being indicative of character width, projection means for transmitting the image of a character passing through a projection position, character drive means for moving said characters, position marks and width indication means at a substantially constant speed consecutively past said projection position, and width sensing means for sensing said moving width indication means and deriving character width information from said width indication means.
A character carrier for a phototypesetting machine comprising a disc shaped assembly bearing characters for photographic projection formed into at least one character ring, said character carrier being divided into at least first and second sections, said first section including characters forming two fonts, a first font being arranged to form a first arcuate segment of a circle and a second font being arranged to form a second arcuate segment of a circle concentric with said first arcuate segment, and said second section including second characters forming a third font arranged along two arcuate segments of a circle, the arcuate segments of said first and second sections mating to form at least two character rings.
A character carrier for a phototypesetting machine comprising a disc bearing light transmitting characters for photographic projection, said characters being arranged along at least one arcuate segment of a circle on an opaque background, said opaque background extending over said disc to define an opaque section ending along radial lines from the center of the disc through the ends of said arcuate segment, the remainder of the disc being substantially transparent and width indication means for each character formed on the disc, said width indication means operating to provide character width information and being arranged along at least one arcuate segment of a circle concentric with said arcuate segment of characters, said disc including a central aperture formed therein and three mounting holes formed in said disc equally spaced from said central aperture and centered on radial lines forming angles of substantially 120.degree. at the center of the disc, two of said mounting holes being centered on the border between the opaque and transparent sections of said disc.
A character carrier for a photosetting machine comprising a unitary disc bearing characters for photographic projection, said characters being arranged along two arcuate aligned segments of concentric circles extending for less than 360 degrees, and character width indication means for each character formed on said unitary disc in arcuate segments concentric and aligned with the arcuate segments formed by said characters, said width indication means operating to provide character width information, said disc being transparent in a section between the ends of said arcuate segments.
In a phototypesetting machine, a disc shaped character carrier bearing in combination a group of characters, a position mark for each character in said group and a width indication means operating to provide character information, said character carrier being divided into at least first and second discs of substantially equal diameter, said first disc including first characters forming at least a first font arranged along at least one arcuate segment of a circle and width indication means and position marks for said first characters arranged respectively to form concentric arcuate segments of concentric circles, said first characters and width indication means and position marks therefor being light transmitting and formed on a substantially opaque background which extends over a section of said first disc between the ends of the concentric arcuate segments formed by said first characters and the width indication means and position marks therefor, the remainder of said first disc being transparent, said second disc including second characters forming at least a second font arranged along at least one arcuate segment of a circle and width indication means and position marks for said second characters arranged respectively to form concentric arcuate segments of concentric circles, the arcuate character width indication means and position mark arcuate segments of said first and second discs mating to form a plurality of concentric rings, projection means for transmitting the image of a character passing through a projection position, character drive means for moving said characters at a substantially constant speed consectively past said projection psotion, and width sensing means for sensing character width information from said width indication means.
A character carrier for a phototypesetting machine comprising a disc shaped assembly bearing characters for photographic projection formed into at least one character ring, said character carrier including a first section formed on a first disc and a second section formed on a second disc, said first section including first characters forming at least one arcuate segment of a circle, the first characters being light transmitting and formed on a substantially opaque background on said first disc defining said first section and the remainder of said first disc being transparent, said second section including second characters forming at least a second font arranged along at least one arcuate segment of a circle, the second characters being light transmitting and formed on a substantially opaque background which extends over a section of said second disc between the ends of the arcuate segment formed by said second characters, said substantially opaque background on said second disc defining said second section and the remainder of said second disc being transparent, the arcuate segments of said first and second sections mating to form at least one character ring, said first and second discs being of substantially equal diameter and including alignment mean to permit said discs to be superimposed to form at least one character ring.
A character carrier for a phototypesetting machine comprising a disc bearing light transmitting characters for photographic projection, said characters being arcuately arranged on an opaque background, a position mark for each character, a width indication means for each character positioned between the position mark for that character and a position mark for the next preceding character, said width indication means operating to provide character width information and including two spaced marks for each character, the distance between said two marks being indicative of character width, said position marks and width indication means being arranged concentrically with said characters, and set size indicator means for providing a set size indication for said characters, said set size indicator means being formed by two spaced set size marks for a group of characters, the distance between said set size marks being indicative of the set size for said group of characters.
Dependencies are inferred from the claim text.