How To Get Good Results With - Oce Arizona 440 GT User Manual

User Manual: Arizona (AZ) 440 GT, AZ 440 XT, AZ 460 GT, AZ 460 XT, AZ 480 GT, AZ 480 XT - Rev. B, 4/2013
How to Get Good Results With Varnish
Keep the Printer Clean
Since the printer has moving parts (e.g., fans, carriage, gantry etc.) it is
important to keep these parts clean and dust free to minimize the risk of
circulating airborne dust and debris and depositing it on the media. Follow
these tips for keeping the printer clean:
• Keep the fan filters clean and replace as needed.
• Wipe the bottom of the carriage clean with a lint free cloth.
• Wipe (with a swab) the cut holes in the carriage pan around the
printheads.
• Wipe the external parts of the printer with a damp lint-free cloth: the
table, gantry, carriage etc..
Prepare the Media Surface
Varnish can be successfully applied to most media. However, on some un-
coated high-absorbent media, the varnish can be "lost" to the surface and
it will be hard to tell that anything was applied. If there are issues applying
varnish to particular media, try printing on a suitable alternative media.
With its translucent property, varnish can increase or shift the apparent
density of the image or media, so for instance it can make a gray slate
darker in the areas with varnish.
It is important to clean media before printing and to remove any dust or
debris from the media surface. Also, to eliminate any static charge on the
media prior to printing, use the optional printer Static Suppression Option
(ionizer bar) to eliminate static.
Some media can be purchased with a top protective sheet that is removed
prior to printing. However, the act of removing the protective sheet can
induce a static charge and attract airborne dust to the media surface.
Based on our experience, there is little benefit in trying to clean the media
after printing the image data and prior to printing the varnish.
The surface of the media must be free from dust and dirt particles. With
the media loaded on the table, we recommend that you gently and
completely wipe the surface with a lint-free cloth or a Tack Cloth.
There are various methods employed in print shops to clean media prior to
printing and these include:
• Tack cloth and Cleaning wands (floor cleaning style);
• Mix of 99.6% or higher pure isopropyl alcohol and distilled water.
Tack Cloths are a highly effective tool for trapping and removing dust and
dirt particles from most surfaces. They can be purchased at various stores
202 Chapter 9 - How to Work With White Ink and Varnish