Electrophotographic typesetting method and apparatus therefor

Claim 1

An apparatus for making prints comprising: an electrically charging device for electrically charging a photoconductive material, a photoconductive material holding device for holding said electrically charged material; and an image exposing device having a phototypesetting machine adapted to expose said charged material to light through desired characters, numerals and/or other symbols in the original plate of said phototypesetting machine, said photoconductive material holding device including a rotary holding drum about which said electrically charged photoconductive material is disposed in position and held at the opposite side edges of the material in the axial direction of said drum, said photoconductive material holding device also including a pair of endless belts spaced away from each other in the axial direction of said drum, each of said belts being partially trained around the corresponding outer periphery of said drum, the engaging faces of said belts with said outer peripheries being driven at the same rate and in the same direction as those of said outer peripheries of said drum whereby when an electrically charged photoconductive material is fed onto the holding drum, the material is pinched between the rotating drum and holding belts so that the material is held at the opposite side edges thereof on the holding drum.

Claim 2

An apparatus for making prints comprising: an electrically charging device for electrically charging a photoconductive material, a photoconductive material holding device for holding said electrically charged material; and an image exposing device having a phototypesetting machine adapted to expose said charged material to light through desired characters, numerals and/or other symbols in the original plate of said phototypesetting machine, said photoconductive material holding device including a rotary holding drum about which said electrically charged photoconductive material is disposed in position and held at the opposite side edges of the material in the axial direction of said drum, said photoconductive material holding device also including a pair of endless belts spaced away from each other in the axial direction of said drum, each of said belts being partially trained around the corresponding outer periphery of said drum, the engaging faces of said belts with said outer peripheries being driven at the same rate and in the same direction as those of said outer peripheries of said drum whereby when an electrically charged photoconductive material is fed onto the holding drum, the material is pinched between the rotating drum and holding belts so that the material is held at the opposite side edges thereof on the holding drum.

Claim 3

An apparatus for making prints comprising: an electrically charging device for electrically charging a photoconductive material, a photoconductive material holding device for holding said electrically charged material; and an image exposing device having a phototypesetting machine adapted to expose said charged material to light through desired characters, numerals and/or other symbols in the original plate of said phototypesetting machine, said apparatus also including a photoconductive material supply device holding a roll of a continuous length of photoconductive material and paying out said material from the roll; a shearing device for shearing a desired length segment from the rest of the paid out material from said supply device and feeding said sheared segment of the material to said electrically charging device; and a developing device for developing said sheared and electrically charged segment of material by means of a desired color toner after the material segment has had latent images exposed thereon.

Claim 4

An apparatus for making prints comprising: an electrically charging device for electrically charging a photoconductive material, a photoconductive material holding device for holding said electrically charged material; and an image exposing device having a phototypesetting machine adapted to expose said charged material to light through desired characters, numerals and/or other symbols in the original plate of said phototypesetting machine, said apparatus also including a photoconductive material supply device holding a roll of a continuous length of photoconductive material and paying out said material from the roll; a shearing device for shearing a desired length segment from the rest of the paid out material from said supply device and feeding said sheared segment of the material to said electrically charging device; and a developing device for developing said sheared and electrically charged segment of material by means of a desired color toner after the material segment has had latent images exposed thereon.