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:
Aug. 02, 1988
Filed:
Mar. 05, 1986
John N Birkett, Aylesbury, GB;
Reed Packaging Limited, , GB;
Abstract
There is provided a web printing apparatus (20 ) comprising a web feed means (4, 5, 6), two or more printing stations (21, 22) arranged to print radiation-curable ink onto a web (3) and a primary radiation source (11) arranged to radiate said web with an ink-curing radiation after said web has passed a first said printing station (21) and before said web passes the subsequent printing station (22), wherein said apparatus further comprises a plurality of secondary radiation sources (13, 14) each extending part way across the width of said web and each being arranged to radiate a part of said width after said web has passed said first printing station and before it has passed said subsequent printing station. By controlling the positioning of the secondary radiation sources, generally UV sources, and the radiation emission levels of the primary (11) and secondary (13, 14) radiation sources, wastage may be reduced and efficient ink curing can be achieved with lower power consumption and with lower press operating tempertures than is possible with the use of only the primary radiation sources.