Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1985-07-19
1988-01-12
Shaw, Clifford C.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
354 5, 350 67, G01D 942
Patent
active
047194740
ABSTRACT:
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.
REFERENCES:
patent: 2151570 (1939-03-01), Shoults
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patent: 4482225 (1984-11-01), Moyroud
patent: 4516142 (1985-05-01), Yamamoto
Hansen Walter I.
Klepper Herbert
Edelman Lawrence C.
Reinhart Mark
Rudolf Hell GmbH
Shaw Clifford C.
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