Controlling media curl in print-zone

In an inkjet printing apparatus an inkjet printhead ejects ink into a print-zone. A drive shaft, located upstream of the printhead, has a longitudinal axis, a first radius over a central length, and a second radius less than the first radius at a first recess and a second recess. Each recess is peri...

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Bibliographische Detailangaben
Hauptverfasser: DOWNING STEVEN P, BELBEY JASON S, RASMUSSEN STEVE O, YRACEBURU ROBERT M, STEPHENS VANCE M, SPENCER STUART D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In an inkjet printing apparatus an inkjet printhead ejects ink into a print-zone. A drive shaft, located upstream of the printhead, has a longitudinal axis, a first radius over a central length, and a second radius less than the first radius at a first recess and a second recess. Each recess is peripheral to the central length. A plurality of pinch devices stabilize the media against the drive shaft. A first guide and a second guide, spaced from the longitudinal axis, are aligned with and extend into the first recess and second recess.