jam detection sensors (EF) ● PS1802: Envelope multiple-feed sensor ● PS103: Top of page sensor (in the product) Figure 1-40 Envelope feeder jam detection PS1802 PS103 The envelope feeder driver determines a jam if the sensor detects envelope presence at a specified timing stored in the envelope feeder driver. The envelope feeder driver stops a print operation and notifies the DC controller when it determines a jam has occurred. Envelope feeder pickup delay jam ● The top of page sensor (PS103) does not detect the leading edge of envelope within a specified period from when a envelope pickup operation starts.
Envelope feeder multiple-feed jam ● The envelope multiple-feed sensor (PS1802) detects the multiple-fed envelopes after a pickup operation has started. 52 Chapter 1 Theory of operation ENWW