Photocopying – Contact printing – Light boxes
Patent
1977-02-23
1979-04-10
Wintercorn, Richard A.
Photocopying
Contact printing
Light boxes
355 40, 355 77, G03R 1704
Patent
active
041485718
ABSTRACT:
Described are improvements upon my machine in which the character spacing drive system also is used to change the size and/or style of the characters. One improvement is the provision of a "pi-character" insertion and rules-forming system which uses much of the mechanism of the size/style changing system in its operation. Another improvement is the use of a lens turret which also uses much of the size/style changing mechanism in its operation. A movable shutter band is provided to facilitate lens selection. Data such as character width codes are stored in circular tracks on the rotating character matrix disc, and are read by a read head utilizing much of the same mechanism as that used for size/style changes for data track selection.
REFERENCES:
patent: 3602116 (1971-08-01), Moyroud
patent: 3631774 (1972-01-01), Tidd
patent: 3640193 (1972-02-01), Linde et al.
patent: 3726193 (1973-04-01), Ishii
patent: 4017177 (1977-04-01), Kuhnle
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