SHEET MEDIUM TRANSPORT FOR PRINTERS

摘要

The invention provides a method apparatus for counteracting the effects of localized drag on a sheet (27) as it is moved by a drive system, in a printer (25) to prevent misregistration of the sheet (27) with the X-axis drive system (416) as the sheet is moved past the print head (28) which creates a drag thereon. The sheet (27) is stiffened in the region which is contacted by the print head (28) by bending the sheet (27) in a direction of movement of the sheet (27). The bend is provided by a roller guide (500) located between the print head (28) and the X-axis drive system (68). Friction is reduced between the sheet and the guide (500) by mounting the guide, to rotate freely under the action of the sheet moving thereover.