Riso RP-255, Technical Manual

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TIMING CHARTS
[ 16 - 11 ]
(1) The paper receiving sensor is checked on starting printing, and error message [A09-417] is
displayed if it is ON (paper jam from start).
The paper sensor is checked on starting printing, and error message [A07-418] is displayed if it is
ON (paper jam from start).
On starting printing, the main motor, paper ejection motor, suction fan, and separation fan are
switched ON.
The print drum initially rotates at speed 1 here, and increments by one speed level at the drum
angle of 220° for each sheet printed.
(2) The pressure solenoid is activated at the drum angle of 40°, and subsequently remains ON until
printing ends.
(3) The paper detection sensor is checked at the drum angle of A°, and the paper feed clutch is
activated if paper is present.
Error message [C04-402] is displayed if no paper is present.
A = a + values set in Test Modes Nos. 495 through 498
a: 65° (NORMAL), 67° (CARD), 65° (THIN), 67° (CUSTOM)
(4) The paper is transported, and the paper feed clutch is deactivated once the print drum has rotated
B° from when the paper is detected by the paper sensor.
B = b + values set in Test Modes Nos. 482 through 485 + the correction value for the
corresponding print-drum rotation speed
b: 21° (NORMAL), 41° (CARD), 21° (THIN), 21° (CUSTOM)
(5) If the paper sensor does not detect the paper by the time the print drum has rotated to angle C, it
determines that no paper has been picked up, and moves to the three-cycle no-paper pickup
operation.
C = 143° + value set in Test Mode No. 486 + value set in Test Modes Nos. 495 through 498
(6) If the paper receiving sensor does not detect the paper by the time the print drum has rotated to
angle D, it determines that a paper jam has occurred, and moves to the print-end operation.
The paper sensor is checked at 180° before the print drum stops, error message [A07-409] is
displayed if paper is present, and [A08-410] is displayed if there is no paper.
D = 350° + value set in Test Mode 487