Herbert Daphne Klepper

47194740, Jan 12, 1988

Jul 19, 1985

6/757129

Walter I. Hansen - Cold Spring Harbor NY
Herbert Klepper - Westbury NY

Rudolf Hell GmbH - Kiel

G01D 942

346108

Image setting apparatus is disclosed for producing two-dimensional images on photosensitive sheet material. The apparatus includes a device for transporting the photosensitive sheet material past an image point to provide a first dimension of the two-dimensional image; a light source for producing a modulated beam of light, a scanning device for converting the light beam into a scanning beam; and a scan lens in the path of the scanning beam such that a focused beam spot moves repeatedly in a linear direction across the photosensitive material at the image point to provide the other dimension of the two-dimensional image. According to one improvement the scanning device is a rotatable prism having two mirror facets whose planes intersect in a common line. The prism is arranged to rotate about an axis perpendicular to this line so as to reflect the light beam into a scanning beam having a substantially constant angular velocity. According to another improvement, the device for transporting the photosensitive sheet material includes a pair of driving rollers at the nip of which the sheet material is pinched, the image point being located along a line on the surface of one of these rollers extending parallel to its axis of rotation.

40273130, May 31, 1977

Jun 18, 1975

5/587856

Herbert Klepper - Brooklyn NY
Walter Hansen - Cold Spring Harbor NY
Joel S. Harris - Valley Stream NY
Farrokh Golesorkhi - Commack NY

Eltra Corporation - New York NY

B41L 1308

415 R

A photocomposing machine and font strip therefor are described which allow type designers to have the flexibility to design typographical characters which are kerned. The photocomposing machine is able to automatically kern those characters which are designed to be kerned. The automatic kerning is accomplished by intentionally offsetting each character's placement on the font strip to the left with respect to the machine's aperture, and providing an optical system in the photocomposing machine which intentionally offsets the projection of the font strip through the aperture of the machine to the right, thereby cancelling the offset of unkerned characters. Kerned characters are placed to the right on the font strip in order to allow the machine's optical system offset to overlap the image of kerned characters on the space normally reserved for the next character.

42708591, Jun 2, 1981

May 10, 1979

6/037698

Wiley E. Galbraith - East Northport NY
Arthur L. Kaufman - Westport CT
Herbert Klepper - Mineola NY

Eltra Corporation - Toledo OH

G03G 1510

355 10

The present invention is concerned with an electrophotographic apparatus for producing high quality, toned, first generation images. The apparatus includes: (a) a transporting device, such as a drum, belt or platen for supporting and transporting an image receiving medium, such as ZnO-coated paper, having a flexible substrate and a photoconductive surface; (b) a charging device, such as a scorotron, disposed adjacent to the transporting device, for applying a uniform charge on the photoconductive surface of the image receiving medium, this charge being substantially less than the saturation charge of the surface; (c) an exposing device, such as an illuminated character mask or a laser scanner, for directing radiation onto the photoconductive surface after charging at the areas where toned images are to appear, thereby to discharge the surface at these areas; and (c) a developing device disposed adjacent to the transporting device, for applying liquid toner to the discharged areas on the photoconductive surface after exposing. The toner particles are triboelectrically charged with the same sign as the photoconductive surface and are thereby repelled from the photoconductive surface except at the areas thereof which have been discharged by exposure to radiation.