Ribbon Motion Sensor
c . Form Movement. Form movement (fig. 1-7) consists of a dual pin feed
mechanism driven by a phase controlled motor, w h i c h is under processor control.
The paper forms are advanced at six or eight lines per inch according to the
s e t t i n g of the 6/8 lines switch on the control panel. The paper forms are also
a d v a n c e d in either single or multiple line rates under system control. Single or
multipart forms, which are stowed in the front paper compartment, are fed up
t h r o u g h the pressure throat, across the print station and over the two pin feed
sprocket assemblies which provide the form drive. The forms are then fed through
t o the form exit located at the rear section of the print mechanism. Paper tension
i s provided by three pressure rollers, located at the paper throat, and five
a d j u s t a b l e paper puller pressure rollers, located at the rear of the printer.