Media Feed And Take-Up System - ENCAD NovaJet Pro 600e Service Manual

NovaJet PRO 600e Service Manual

Media Feed and Take-Up System

Figure 2-4. Power Feed and Take-Up System.
The media feed and take-up system comprises of two optical sensors and
two dc motors. See Figure 2-4.
The motors are used to advance the media feed roll and the media take-
up roll dependant upon the signals they receive from the MPCB. The
MPCB generates the control signals for the motors from the information
it receives from the media feed and take-up sensors.
The optical sensors are designed to inform the MPCB when there is not
a proper amount of slack in the media by sensing the 'curl' of the media
at the bottom of its loop. This method is used so that all approved forms
of media (including transparent backlit media) is able to take advantage
of the power feed and take-up system.
Theory of Operation 2-5