|
DE929699C
|
|
Process for the production of etched metal letterpress forms
|
|
GB705796A
|
|
A method of manufacturing photo-mechanical metal relief printing plates and relief printing plates manufactured according to said method
|
|
DE878657C
|
|
Process for the production of metal letterpress forms
|
|
US2602025A
|
|
Process of applying contrasting marks on surfaces, particularly those of plastics
|
|
GB670005A
|
|
Apparatus for photo-composing purposes
|
|
GB663877A
|
|
Apparatus for photographically reproducing originals in which the time of exposure is independent of the scale of enlargement
|
|
US2572322A
|
|
Apparatus for semiautomatically producing photographic type
|
|
US2596376A
|
|
Photographic reproduction apparatus with constant exposure time regardless of the scale of reproduction
|
