Operation Sequence When The Second Roll Is Set - Ricoh D124 Detailed Descriptions Manual

4.6.4 OPERATION SEQUENCE WHEN THE SECOND ROLL IS SET

Here is a description of what happens when roll paper is already loaded and the
leading edge of the paper is at the registration standby position. This sequence
executes when:
 Roll Unit 2 (optional roll unit) is installed.
 Both roll units are installed, but the paper for the roll unit selected for the job is not
at the registration standby position.
At the start of the job, the paper at the registration standby position must be retracted
so that the paper from the other roll can be fed for printing.
1. The paper feed motor of the roll with paper at the registration standby position >
ON reverses at 120 mm/s.
2. The vertical motor > ON reverses at 100 mm/s. (The difference in the motor
speeds keeps the paper taut.)
3. The pre-registration sensor > OFF and starts a pulse count.
4. Once the paper has fed downstream back into the roll unit paper path, the
pre-registration sensor stops the reverse feed.
5. The roll unit clutch, paper feed motor, and paper release sensor go off and the
paper stops.
6. The paper is now at the paper feed standby position 51.5 mm downstream of the
pre-registration sensor, and the path is open for paper from the other roll to feed.
Detailed Descriptions 91 D124