Figure 7-13. Rotating Litho And Aperture Ring; Figure 7-14. Removing A Static Litho - High End Systems Studio Spot 250 User Manual

Table of Contents

You may need to continue pressing the spring tip under each plastic tab until

the spring is completely free of the wheel housing.

7. After removing the spring, remove the rotating litho and its aperture ring (if

present) from the wheel.

Note:

The aperture ring is used with multi-color lithos because the colors do

not completely bleed to the edge of the litho. The aperture ring serves

as a light block to provide an even edge on a multi-color litho.

8. There are two kinds of lithos in the litho wheel: a rotating litho and a static litho

(located directly behind the rotating litho) (see Figure 3-6 on page 3-9).

If you want to remove the static litho,

you must first remove the rotating

litho in front of the static litho by

completing steps 1-5 above. Then,

carefully spread the outer edge of the

wheel apart and slide the static litho

out of the wheel as shown Figure 7-14.

9. Orient the new litho (either static or

rotating) so that the coated (or

"bumpy") side of the litho is facing

away from the lamp.

To determine which side of the litho is coated, place the tip of a pen against

each side of the litho. Look at the litho and pen from a slight angle.

On the coated side, the tip of the pen appears to "touch" its reflection. On the

uncoated side, there appears to be a gap between the pen and its reflection

(see Figure 7-11).

Note:

If you are replacing a single litho in the wheel, or a textured (i.e.,

"bumpy") litho, you must orient the litho with the coated side facing

away from the lamp.

However, if you are replacing a rotating litho with a static litho behind

it, you can choose to orient the coated side facing the static litho for

different focusing options. If the coated side of the top litho is facing

7-10

General Maintenance

litho