Toshiba FC-22 manual Loosen 2 screws for fixing the lens unit

(b)Adjusting the magnification ratio of the lens

Note:

1.The lens magnification ratio adjustment should be performed only when the lens unit is removed or replaced in the field.

2.Before this adjustment, check that the pri- mary scanning reproduction ratio of the printer is corrected.

Feeding direction

Copied ruler Actual ruler

1.Place a suitable ruler on the original glass and make a copy of it on A4(LT)-size paper at 100% reproduction ratio.

2.Compare the copied ruler with the actual ruler to measure the error in the reproduction ratio.

3.Make adjustment so that the distance between each mark of both rulers becomes equal, using the following procedure.

Note:

After this adjustment, be sure to perform CCD primary scanning deviation adjustment.

<Adjustment procedure>

(1)Remove the original glass, lens cover, damp heater unit and lens shield bracket.

(2)Screw the 2 pins for lens magnification ratio adjustment into the 2 elongated holes in the lens base.

Pins for lens magnification ratio adjustment

Feed side

Lens base

Exit side

(3) Loosen 2 screws for fixing the lens unit.

January 2000 © TOSHIBA TEC 1 - 81 FC-22 ADJUSTMENT