Pen capping mechanism

Pen carriage suspension for graphic recorder

Pen changeover mechanism for pen recorder

Pen changer with orthogonal pick up from the turret

Pen control circuit

Pen driving mechanism

Pen exchange mechanism, a pen chuck mechanism, a pen position re

Pen lifting and lowering positioner for graphic recorder

Pen plotter pen type identification system

Pen position regulator

Pen pressure device

Pen recorder

Pen recorder

Pen recorder

Pen recorder with improved accuracy

Pen recording apparatus

Pen selection mechanism for a printer

Pen shuttle guide and spring return

Pen switching mechanism in drum plotters

Pen turret rotation for plotters