Laser read-write system for the production of engravings

Details Laser read-write system for the production of engravings Laser read-write system for the production of engravings

1977-01-10

1983-07-12

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358286, 358293, H04N 142

Patent

active

043934110

ABSTRACT:
Engraving apparatus with particular reference to a plate to be engraved having a photosensitive surface in which a write laser beam exposes anid surface by scanning the same in conjunction with a read optical path associated with a copy board positioned proximate the plate. Means, for example, such as a read laser beam scans the copy board, the reflection therefrom being noted and used to control the intensity of the write beam. The optical scanning elements of both the read optical path and the write beam are common to each so that positional error due to vibrations in the optical components is eliminated. Provision is made for read-right conversion to read-wrong during preparation of a plate, both by use of memory circuits and by geometrical arrangement. Independent width and length magnification, other than unity, are also provided.

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patent: 2877298 (1959-03-01), Hell
patent: 3287736 (1966-11-01), Germer
patent: 3316348 (1967-04-01), Hofnagel
patent: 3465352 (1969-09-01), Carlson et al.
patent: 3493754 (1970-02-01), Black
patent: 3720785 (1973-03-01), Van Auken
patent: 3739095 (1973-06-01), Alden
patent: 3751587 (1973-08-01), Insler et al.
patent: 3798365 (1974-03-01), Browning
patent: 3800076 (1974-03-01), Kolzumi
patent: 3816652 (1974-06-01), Barnet
patent: 3836709 (1974-09-01), Hutchison

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