The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1990
Filed:
Jun. 07, 1988
Applicant:
Inventor:
George B Cusdin, St. Albans, GB;
Assignee:
W. R. Grace Limited, London, GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03L / ;
U.S. Cl.
CPC ...
430 15 ; 430300 ; 430306 ; 430309 ; 430325 ; 430328 ; 430394 ; 430494 ;
Abstract
A relief flexographic printing plate is prepared by image-wise exposure of the 'printing face' of a layer of photocurable polymer through a negative 7 and image-wise back exposure of the layer 4 through a support sheet 3 and a positive 6 of the image to be printed, thereby selectively curing the floor regions 9 of the printing plate in register with the uncured areas 8 left in the printing face of said layer. Preferably a further non-selective back exposure operation is carried out for additionally curing the floor regions.