HP DesignJet 250C Service Manual page 193

Vertical Line Straightness (VLS)
Symptoms
'
Swath Printing Direction
Swath Printing Direction
Swath Printing Direction
Maximum allowable VLS Error = 2 mils.
1 3a
2
Customer Expectations
Bidirectional Error
D
D
D
D
230
'
250C
330
'
350C
Swath (n–1)
Swath (n)
Swath (n+1)
4a Carriage Swath
3b 4b
Direction
Steady 346
Steady 234
'
3. - VLS
1 No error
2 Bidirectional error
3a Theta–Z error
3b Theta–Z error
4a Combined error
4b Combined error
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