Stratasys P750K, User Manual

Page: 142 / 196

Operating & Maintaining the Stratasys P750K 3D Printer
6–26
DOC08010 Rev. A (DRAFT 1)
Figure 6-29: Sample Pattern Test
6. Carefully ȱ inspect ȱ the ȱ test ȱ paper ȱ to ȱ see ȱ if ȱ there ȱ are ȱ missing ȱ lines. ȱ
Too ȱ many ȱ missing ȱ lines, ȱ especially ȱ if ȱ they ȱ are ȱ in ȱ the ȱ same ȱ area, ȱ
indicates ȱ that ȱ the ȱ quality ȱ of ȱ printing ȱ when ȱ producing ȱ models ȱ will ȱ be ȱ
poor. ȱ If ȱ this ȱ is ȱ the ȱ case, ȱ see ȱ “Improving ȱ Print ȱ Quality,” ȱ below.
Note: Acceptable model quality is subjective, and depends on the type
and scale (size) of the models produced . As a rule, however, more than 10
missing lines in one area of a column is considered unacceptable.
Improving
Print Quality
If ȱ you ȱ suspect ȱ that ȱ print ȱ quality ȱ is ȱ poor, ȱ perform ȱ the ȱ pattern ȱ test ȱ (see ȱ
“Pattern ȱ Test” ȱ on ȱ page 25). ȱ If ȱ the ȱ results ȱ are ȱ poor, ȱ use ȱ the ȱ following ȱ
procedure ȱ to ȱ improve ȱ print ȱ quality.
If the results of the last pattern test are poor:
1. From ȱ the ȱ Options ȱ menu, ȱ select ȱ Purge Sequence , ȱ or ȱ press ȱ F4 .
2. In ȱ the ȱ confirmation ȱ dialog ȱ box, ȱ click ȱ
Yes
.
The ȱ print ȱ heads ȱ are ȱ purged ȱ of ȱ Model ȱ and ȱ Support ȱ material, ȱ and ȱ the ȱ
wiper ȱ removes ȱ excess ȱ material ȱ from ȱ them.
3. Repeat ȱ the ȱ purge ȱ sequence.
4. Perform ȱ the ȱ pattern ȱ test.
If the results of the pattern test are still poor:
1. Manually ȱ clean ȱ the ȱ print ȱ heads ȱ (see ȱ “Cleaning ȱ the ȱ Print ȱ Heads ȱ and ȱ the ȱ
Roller” ȱ on ȱ page 20).
2. Perform ȱ the ȱ purge ȱ sequence.
3. Perform ȱ the ȱ pattern ȱ test.
If the results of the pattern test are still poor:
1. Carefully ȱ clean ȱ the ȱ print ȱ heads ȱ again, ȱ making ȱ sure ȱ there ȱ is ȱ no ȱ residue ȱ
left ȱ on ȱ them.
2. Perform ȱ the ȱ purge ȱ sequence.
3. Perform ȱ the ȱ pattern ȱ test.
If the results of the pattern test are still poor:
¾
Optimize ȱ the ȱ print ȱ heads ȱ and ȱ replace ȱ faulty ȱ print ȱ heads, ȱ if ȱ necessary ȱ
(see ȱ “Optimizing ȱ (Calibrating) ȱ Print ȱ Heads” ȱ on ȱ page 35).