METHOD OF PRODUCING MOSAIC PRINTING HEAD WITH DUST PROOF COVER

摘要

1527476 Selective printing FACIT AB 20 April 1977 [23 April 1976] 16403/77 Heading B6F Method of providing a dust cover at the needles opening of a mosaic printing head comprises covering the opening with a thin sheet of material and operating the needles to wear holes in the sheet. The sheet may be stainless steel or PTFE tape. The sheet may be attached to the head adjacent the opening or formed integrally with it.