IBM InfoColor 70, User Manual

Page: 21 / 64

Guidelines for Print Medium Quality Inspection
15
Guidelines for Print Medium Quality Inspection
Check Paper Quality
1. Compare the manufacturer’s Packaging and Reel Formation information with the Paper Roll spec-
ifications listed in the following table.
2. Paper Formation
Good paper formation is very important to obtaining good print and finish quality. A paper with poor
formation quality produces a high degree of uneven print, mottling, and release of fibers. Non-uni-
form texture affects the uniformity of resistivity, causing uneven toner transfer to the paper.
3. Moisture content
Moisture content should be consistent from roll to roll and also within a roll. Uneven moisture con-
tent can cause unstable print quality. Too high a moisture content can cause wrinkling (especially
with thin paper), curling, and poor print quality. See "Artifact Samples" on page 21.
4. Surface smoothness
A smooth paper surface greatly improves print quality because the contact area between the pa-
per and the imaging drum is more uniform.
Roll Dimensions
Description Dimension (USA) Dimension (EU)
Inner Core Diameter 6"-0/+.02 150mm+/-.5
Outer Core Diameter 7.1" 174mm
Maximum Roll Diameter 19.7" 500mm
Typical Roll Diameter 15.75" 400mm
Maximum Roll Weight 88lbs 40kg
Roll Width 12.6" 320mm
Roll Specifications
The paper must be free from splices, tears, dents, holes and other physical defects. The paper
should be flush with the core and must not slide axially over the core.