SATO CL412E service manual Ribbon Clutch Adjustments, Raise the TOP Access Door Open the Front

Section 5. Mechanical Adjustments

5.2 Ribbon Clutch Adjustments

Excessive ribbon and rewind tension will result in variable ribbon motion and could be the cause of print quality problems.

Follow the procedures 5.2.1 and 5.2.2 to verify that the ribbon rewind and unwind tensions are within specifications or if adjustment of either clutch is necessary.

		Required Equipment:	•	1 Kg Tension Gauge
			•	Ribbon Core, empty
			•	String
			•	12mm Wrench
			•	#2 Pozidrv Screwdriver
5.2.1 Ribbon Rewind Clutch Adjustment
STEP	PROCEDURE

1.Switch the printer OFF and disconnect the power cable.

2.Raise the top access door and open the front access door. Remove the ribbon and label stock if installed. Fig. 5-1

3.Attach string to an empty ribbon core and place on the Ribbon Rewind Spindle. Wind the string tightly around the ribbon core in a single layer and in in clockwise direction. Attach the free end of the string to the tension gauge. Fig. 5-2

4.Gradually lift the tension gauge, pulling the string to unwind it from the core. Once the spindle gegins to move, the gauge should indicate 950 to 1050 grams of tension. Excessive or insufficient tension must be corrected by adjusting the Ribbon Rewind Clutch.

5.To adjust the clutch, loosen the locking screw and move the adjust nut CW for more tension and CCW for less tension. Tighten the locking screw and repeat steps 3 and 4 until the correct tension is achieved.

RAISE THE TOP

ACCESS DOOR

OPEN THE FRONT

ACCESS DOOR

Fig. 5-1

Page 5-2 SATO CL408e/CL412e Service Manual

PN 9001078 Rev. B