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.

Abstract: An adjustable support for an optical or other instrument (e.g. a binocular microscope for use by a surgeon in neurosurgery) which readily permits adjustment in the position of the instrument in a predetermined spatial envelope and/or adjustment of the orientation of the instrument at any given position within that envelope, and which is compact, relatively inexpensive to manufacture, easy to adjust, and incorporates a high degree of safety, comprises a rod-like carrier, supporting the instrument at one end and an adjustable counterweight at the other, mounted, by a ball joint arrangement on a linkage system rotatably supported on a column. The ball joint arrangement and the other joint arrangements in the linkage system are provided with clamping devices, normally urged to clamping position by springs but released by the application of air pressure under control of a switch device.