Browse Prior Art Database

Printhead Adjustment

IP.com Disclosure Number: IPCOM000042454D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03

Publishing Venue

IBM

Related People

Authors:
Rex, DK [+details]

Abstract

In nearly all impact printers, the distance from the print element to the paper is most important to proper machine operation. This is particularly true in high speed devices where short strokes of the print element are required. High speed wire matrix printers are particularly sensitive to the head-to-paper distance. Nearly all high speed wire impact printers have a paper thickness adjustment that must be made manually by the operator when changing from one forms thickness to another. Failure on the part of the operator to make the adjustments properly can cause machine malfunctions and in some cases, damage to the ribbon or the print mechanisms. Even when an operator makes the manual adjustment, there is generally a degree of judgement involved and it is difficult to precisely position the printhead at the proper position.