Film font cassette

Claim 2

A film font cassette for use with photographic type printing equipment having a projection light source, an optical projection system, a film font drive mechanism and photosensitive strip material for reproducing film font images projected by the projection system, comprising, in combination, a housing structure having spaced front and back walls, a pair of end walls, and top and bottom walls, a film strip having type character images printed therealong for selective projection in a printing equipment, a pair of film strip reels rotatably journalled from top to bottom in opposite end portions of said housing structure, a film opening in said front wall, means connecting the ends of said film strip to one each of said reels to permit winding said film strip back and forth between one reel and the other, and means for guiding the film strip in closely spaced relation past the inside of said front wall film opening, the bottom ends of said reels extending through and being journalled in opposite openings In said bottom wall, said bottom ends of said reels each having separable interengagement means for rotatively drivingly interconnecting with the film font drive mechanism of said printing equipment when the film font cassette is interfittingly assembled with respect thereto, and a pair of opposed, vertically extending slots in said front wall, one at each side of said film opening, for removably receiving a texture-screening film strip.

Claim 3

A film font cassette as defined in claim 1, wherein said film strip ends connecting means comprises a circular opening extending along the length of each reel and having an entrance slot extending radially outwardly to open into the peripheral surface of the reel, and rounded bead members affixed transversely to the ends of said film strip, said rounded bead members being freely receivable, lengthwisely, in the circular openings of one each of said reels.

Claim 4

A film font cassette for use with photographic type printing equipment having a projection light source, an optical projection system, a film font drive mechanism and photosensitive strip material for reproducing film font images projected by the projection system, comprising , in combination, a housing structure having spaced front and back walls, a pair of end walls, and top and bottom walls, a film strip having type character images printed therealong for selective projection in a printing equipment, a pair of film strip reels rotatably journalled from top to bottom in opposite end portions of said housing structure, a film opening in said front wall, means connecting the ends of said film strip to one each of said reels to permit winding said film strip back and forth between one reel and the other, and means for guiding the film strip in closely spaced relation past the inside of said front wall film opening, the bottom ends of said reels extending through and being journalled in opposite openings in said bottom wall, said bottom ends of said reels each having separable interengagement means for rotatively drivingly interconnecting with the film font drive mechanism of said printing equipment when the film font cassette is interfittingly assembled with respect thereto, said film strip ends connecting means being operative to permit axial movement of the film strip ends with respect to their associated reels, said film strip guiding means comprising upper and lower facing grooves provided along respective upper and lower marginal portions of said film opening at the inside of said front wall, said film strip guide means further comprising a pair of S-curve guide track projections extending inwardly from said top wall and defining concave arcuate surface portions substantially concentric with the axis of rotation of their respective reels, said arcuate surface portions terminating in spaced relation near the front edge of said top wall in short, reversely directed arcuate wall portions, the ends of said arcuate wall portions terminating in laterally-spaced relation with respect to their respective ends of said upper facing groove.

Claim 5

A film font cassette for use with photographic type printing equipment having a projection light source, an optical projection system, a film font drive mechanism and photosensitive strip material for reproducing film font images projected by the projection system, comprising , in combination, a housing structure having spaced front and back walls, a pair of end walls, and top and bottom walls, a film strip having type character images printed therealong for selective projection in a printing equipment, a pair of film strip reels rotatably journalled from top to bottom in opposite end portions of said housing structure, a film opening in said front wall, means connecting the ends of said film strip to one each of said reels to permit winding said film strip back and forth between one reel and the other, and means for guiding the film strip in closely spaced relation past the inside of said front wall film opening, the bottom ends of said reels extending through and being journalled in opposite openings in said bottom wall, said bottom ends of said reels each having separable interengagement means for rotatively drivingly interconnecting with the film font drive mechanism of said printing equipment when the film font cassette is interfittingly assembled with respect thereto, said film strip ends connecting means being operative to permit axial movement of the film strip ends with respect to their associated reels, said film strip guiding means comprising upper and lower facing grooves provided along respective upper and lower marginal portions of said film opening at the inside of said front wall, said film strip guide means further comprising a pair of S-curve guide track projections extending inwardly from said top wall and defining concave arcuate surface portions substantially concentric with the axis of rotation of their respective reels, said arcuate surface portions terminating in spaced relation near the front edge of said top wall in short, reversely directed arcuate wall portions, the ends of said arcuate wall portions terminating in laterally-spaced relation with respect to their respective ends of said upper facing groove.

Claim 6

A film font cassette for use with photographic type printing equipment having a projection light source, an optical projection system, a film font drive mechanism and photosensitive strip material for reproducing film font images projected by the projection system, comprising, in combination, a housing structure having spaced front and back walls, a pair of end walls, and top and bottom walls, a film strip having type character images printed therealong for selective projection in a printing equipment, a pair of film strip reels rotatably journalled from top to bottom in opposite end portions of said housing structure, a film opening in said front wall, means connecting the ends of said film strip to one each of said reels to permit winding said film strip back and forth between one reel and the other, and means for guiding the film strip in closely-spaced relation past the inside of said front wall film opening, the bottom ends of said reels extenDing through and being journalled in opposite openings in said bottom wall, said bottom ends of said reels each having separable interengagement means for rotatively drivingly interconnecting with the film font drive mechanism of said printing equipment with the film font cassette is interfittingly assembled with respect thereto, said film strip ends connecting means being operative to permit axial movement of the film strip ends with respect to their associated reels, said film strip guiding means comprising upper and lower facing grooves provided along respective upper and lower marginal portions of said film opening at the inside of said front wall, a light passage opening in said rear wall, a first pair of film locating openings in said bottom wall at each side of said film opening and in register with the guidance path of the lower edge of the film strip, a second pair of locating film openings in said top wall at each side of said film opening and in register with the guidance path of the upper edge of the film strip, said lower and upper locating opening pairs being adapted to receive upper and lower pairs of locating abutment pins of the printing equipment, when the cassette is assembled between the projection light source and the optical projection system thereof, for vertically indexing the film strip with respect to the equipment projection system.

Claim 7

A film font cassette for use with photographic type printing equipment having a projection light source, an optical projection system, a film font drive mechanism and photosensitive strip material for reproducing film font images projected by the projection system, comprising, in combination, a housing structure having spaced front and back walls, a pair of end walls, and top and bottom walls, a film strip having type character images printed therealong for selective projection in a printing equipment, a pair of film strip reels rotatably journalled from top to bottom in opposite end portions of said housing structure, a film opening in said front wall, means connecting the ends of said film strip to one each of said reels to permit winding said film strip back and forth between one reel and the other, and means for guiding the film strip in closely-spaced relation past the inside of said front wall film opening, the bottom ends of said reels extenDing through and being journalled in opposite openings in said bottom wall, said bottom ends of said reels each having separable interengagement means for rotatively drivingly interconnecting with the film font drive mechanism of said printing equipment with the film font cassette is interfittingly assembled with respect thereto, said film strip ends connecting means being operative to permit axial movement of the film strip ends with respect to their associated reels, said film strip guiding means comprising upper and lower facing grooves provided along respective upper and lower marginal portions of said film opening at the inside of said front wall, a light passage opening in said rear wall, a first pair of film locating openings in said bottom wall at each side of said film opening and in register with the guidance path of the lower edge of the film strip, a second pair of locating film openings in said top wall at each side of said film opening and in register with the guidance path of the upper edge of the film strip, said lower and upper locating opening pairs being adapted to receive upper and lower pairs of locating abutment pins of the printing equipment, when the cassette is assembled between the projection light source and the optical projection system thereof, for vertically indexing the film strip with respect to the equipment projection system.

Claim 8

A film font cassette as defined in claim 4, wherein the interengagement means at the bottom ends of said reels comprises female bevel gears.

Claim 9

A film font cassette as defined in claim 5, including a central opening in said bottom wall for receiving a collimating lens comprising the equipment to which the cassette is to be assembled.

Claim 10

A film font cassette as defined in claim 3, including a pair of opposed, vertically extending slots in said front wall, one at each side of said front wall opening, for removably receiving a texture-screening film strip.