HP 7475a, Operation And Interconnection Manual

Page: 84 / 101

Symptoms and Solutions (Continued)
Problem Possible Cause
Solution
Ink fades or The ink is old. Use a new bottle
separates.
of ink.
Boot is deterio- Ink was diluted Replace the boot.
rating. with acetone. Dilute ink with
distilled water,
not acetone.
Media
You can use non·glossy plotter paper, glossy plotter paper, transparency
plotter film, and double-matte polyester film with your plotter. The
following table describes each of these plotting media.
Media Type Characteristics
Non·glossy Smooth surface, clear line definition. Easy to
plotter paper handle, good for everyday use. Inexpensive.
Glossy plotter Gloss finish, heavy weight. Good for reports
paper and handouts. Regular use requires frequent
grit wheel cleaning to prevent residue bujld
up.
Transparency High·grade, clear. Good for presentations.
plotter film Paper backing protects film during plotting.
Double-matte Finely coated and translucent.
Good
for high·
polyester film' accuracy applications and archive storage.
Dimensionally stable. Expensive.
*Film of standard thickness, 3-mil, is recommended for best results.
Handle your plotting media by the edges when preparing final plots.
Oil from fingerprints can prevent ink from adhering to the medium.
Plotting media, particularly paper,
can
be affected by changes in
temperature and humidity. Plotting distortions will occur if the medium
shrinks or stretches. Stabilize your media by removing a sheet from the
package and exposing it to air near the plotter for at least
15 minutes
before using it.
(This
is not necessary for media from an open package
that has been exposed to the plotter's environment for several days.)
Media with rounded corners are not recommended for use with your
plotter. Square corners are necessary for the pinch wheels to grip and
move the media accurately.
4-4
SELECTING PENS AND MEDIA