Phototypesetting apparatus for display typography

Claim 2

A phototypesetting device of the class employing a striplike photomatrix element from which characters are imprinted by a light source onto a strip or sheet of photosensitive material wherein an improvement in means of positioning the imprinted images comprises the following features: a photomatrix attached to an elongated, relatively inflexible indexing slide constrained by ways to longitudinal motion, said Indexing slide having therein a pattern of indexing perforations or holes in positions corresponding longitudinally to those of the several typographical character images of the photomatrix but varying transversely in accordance with a chosen scheme which associates a transverse position with each character image of the photomatrix, said scheme may be arbitrary within the limitation that no two holes shall be assigned the same transverse position unless the corresponding characters are of equal width; a moveable stylus point, insertable into said indexing holes, whereby the possible motion of said stylus point is constrained to a particular longitudinal path as determined by the particular hole in which it is engaged; cam stop means intercepting the field of possible paths of and capable of arresting the motion of the stylus point, the functional edge of said cam stop having such form as required by the aforesaid scheme of transverse positions to associate and provide a differing longitudinal displacement of the arrested position of the stylus point for each transverse position of the indexing holes, said displacements differing from a datum by distances equaling the widths of the respective characters associated with the various indexing holes; means to impart travel of the stylus point to the strip of photosensitive material beginning at a baseline paralleling the aforesaid datum with means to shift said baseline from coincidence with said datum by an increment equaling a desired intercharacter spacing whereby the matrix is simultaneously positioned for imprinting of a particular character and the photosensitive material is advanced an amount equaling the width of said character plus a preset intercharacter space.

Claim 3

A phototypesetting device of the class employing a striplike photomatrix element from which characters are imprinted by a light source onto a strip or sheet of photosensitive material wherein an improvement in means of positioning the imprinted images comprises the following features: a photomatrix attached to an elongated, relatively inflexible indexing slide constrained by ways to longitudinal motion, said indexing slide having therein a pattern of indexing perforations or holes in positions corresponding longitudinally to those of the several typographical character images of the photomatrix but varying transversely in accordance with a chosen unambiguous function relating various transverse displacements from an arbitrary datum to various character widths, each indexing hole being assigned a transverse position associated with the width of its corresponding photomatrix character; a moveable stylus point, insertable into said indexing holes, whereby the possible motion of said stylus point is constrained to a particular longitudinal path as determined by the particular hole in which it is engaged; cam stop means intercepting the field of possible paths of and capable of arresting the motion of the stylus point, the functional edge of said cam stop having such form as required by the aforesaid function of character widths to associate and provide a differing longitudinal displacement of the arrested motion of the stylus point for each transverse position of the indexing holes, said displacements differing from a datum by distances equaling the widths of the respective characters associated with the various indexing holes; means to impart travel of the stylus point to the strip of photosensitive material beginning at a baseline paralleling the last said datum with means to shift said baseline from coincidence with that datum by an increment equaling a desired intercharacter spacing whereby the matrix is simultaneously positioned for imprinting of a particular character and the photosensitive material is advanced an amount equaling the width of said character plus a preset intercharacter space.

Claim 4

A phototypesetting device of the class employing a striplike photomatrix element from which characters are imprinted by a light source onto a strip or sheet of photosensitive material wherein an improvement in means of positioning the imprinted images comprises the following features: a photomatrix attached to an elongated, relatively inflexible indexing slide constrained by ways to longitudinal motion, said indexing slide having therein a pattern of indexing perforations or holes in positions corresponding longitudinally to those of the several typographical character images of the photomatrix but varying transversely in accordance with a chosen unambiguous function relating various transverse displacements from an arbitrary datum to various character widths, each indexing hole being assigned a transverse position associated with the width of its corresponding photomatrix character; a moveable stylus point, insertable into said indexing holes, whereby the possible motion of said stylus point is constrained to a particular longitudinal path as determined by the particular hole in which it is engaged; cam stop means intercepting the field of possible paths of and capable of arresting the motion of the stylus point, the functional edge of said cam stop having such form as required by the aforesaid function of character widths to associate and provide a differing longitudinal displacement of the arrested motion of the stylus point for each transverse position of the indexing holes, said displacements differing from a datum by distances equaling the widths of the respective characters associated with the various indexing holes; means to impart travel of the stylus point to the strip of photosensitive material beginning at a baseline paralleling the last said datum with means to shift said baseline from coincidence with that datum by an increment equaling a desired intercharacter spacing whereby the matrix is simultaneously positioned for imprinting of a particular character and the photosensitive material is advanced an amount equaling the width of said character plus a preset intercharacter space.

Claim 5

A phototypesetting device of the class employing a striplike photomatrix element from which characters are imprinted by a light source onto a strip or sheet of photosEnsitive material wherein an improvement in means of positioning the imprinted images comprises the following features: a photomatrix attached to an elongated, relatively inflexible indexing slide constrained by ways to longitudinal motion, said indexing slide having therein a pattern of indexing perforations or holes in positions corresponding longitudinally to those of the several typographical character images of the photomatrix but varying transversely in accordance with a chosen scheme of positional encoding of the symbolic identities of the photomatrix characters, said encoding scheme unambiguously associating a particular transverse position with each particular symbolic identity, whereby each indexing hole is given a transverse position determined by the identity of its corresponding character; a movable stylus point, inserted into said indexing holes, whereby the possible motion of said stylus point is constrained to a particular longitudinal path as determined by the particular hole in which it is engaged; cam stop means intercepting the field of possible paths of and capable of arresting the motion of the stylus point, the functional edge of said cam stop having such form as required by the aforesaid scheme of transverse positions to associate and provide a differing longitudinal displacement of the arrested position of the stylus point for each transverse position of the indexing holes, said displacements differing from a datum by distances equaling the widths of the respective characters associated with the various indexing holes; means to impart travel of the stylus point to the strip of photosensitive material beginning at a baseline paralleling the aforesaid datum with means to shift said baseline from coincidence with said datum by an increment equaling a desired intercharacter spacing whereby the matrix is simultaneously positioned for imprinting of a particular character and the photosensitive material is advanced an amount equaling the width of said character plus a preset intercharacter space.

Claim 6

A phototypesetting device of the class employing a striplike photomatrix element from which characters are imprinted by a light source onto a strip or sheet of photosEnsitive material wherein an improvement in means of positioning the imprinted images comprises the following features: a photomatrix attached to an elongated, relatively inflexible indexing slide constrained by ways to longitudinal motion, said indexing slide having therein a pattern of indexing perforations or holes in positions corresponding longitudinally to those of the several typographical character images of the photomatrix but varying transversely in accordance with a chosen scheme of positional encoding of the symbolic identities of the photomatrix characters, said encoding scheme unambiguously associating a particular transverse position with each particular symbolic identity, whereby each indexing hole is given a transverse position determined by the identity of its corresponding character; a movable stylus point, inserted into said indexing holes, whereby the possible motion of said stylus point is constrained to a particular longitudinal path as determined by the particular hole in which it is engaged; cam stop means intercepting the field of possible paths of and capable of arresting the motion of the stylus point, the functional edge of said cam stop having such form as required by the aforesaid scheme of transverse positions to associate and provide a differing longitudinal displacement of the arrested position of the stylus point for each transverse position of the indexing holes, said displacements differing from a datum by distances equaling the widths of the respective characters associated with the various indexing holes; means to impart travel of the stylus point to the strip of photosensitive material beginning at a baseline paralleling the aforesaid datum with means to shift said baseline from coincidence with said datum by an increment equaling a desired intercharacter spacing whereby the matrix is simultaneously positioned for imprinting of a particular character and the photosensitive material is advanced an amount equaling the width of said character plus a preset intercharacter space.