Thermal Head Alignment Adjustment - Ricoh LDD280 Service Manual

MASTER FEED SECTION

3.7.19 THERMAL HEAD ALIGNMENT ADJUSTMENT

Purpose: To make sure that the original image is correctly reproduced without
skew.
• Master making unit (
• Master making unit right cover (
• Thermal head cover (
• Thermal head base (
[E]
[E]
1. Remove the thermal head guide plate [A].
2. Loosen the four screws [B] that secure the thermal head base.
3. Loosen the Allen screws [C].
4. Turn the eccentric bushing [D] at the operation side or the non-operation side. If
the eccentric bushings [D] are turned one graduation, the image skew amount
[E] is corrected by 0.2 mm.
5. Tighten the Allen screws [C].
6. Tighten the four screws [B] that secure the thermal head base.
7. Install the thermal head guide plate [A].
NOTE: When you install the thermal head base and the thermal head guide
plate, make sure that these are positioned correctly (
8. Install the thermal head base, thermal head cover, and master making unit right
cover. ( 3.7.3)
9. Install the master making unit. (
10. Make a new master and checked if the image skew is correct.
C262/C265
3.7.1)
3.7.3)
3.7.3)
3.7.3)
C262R195.WMF
3.7.1)
3-52
[B]
[E]
[A]
[C]
[B]
[D]
C262R196.WMF
3.7.3).
SM