Phaser 6121MFP Service Manual 5-35
Print-Quality Troubleshooting
Print-Quality Specifications
The printed image has 4 mm margins on all sides. 
Characteristic Specification
Printable Area 214 mm x 352 mm (Legal size - 4 mm on all 
sides)
Simplex Skew
Vertical
Horizontal
Scanner
ADF
A rectangular box of 189mm by 256mm is used 
to measure skew. 
< ± 2.0 mm (0.08 in.)
< ± 1.5 mm (0.06 in.)
± 1.0%
± 1.3%
To measure skew, measure the margin of the 
paper at the leading edge of each
corner, and then take the difference between 
them.
Duplex Skew
Vertical
Horizontal
< 3.0 mm (0.12 in.)
< 2.5 mm (0.10 in.)
Perpendicularity 114.5 mm ± 0.8 mm
Parallelism
Horizontal 180 mm ± 1.2 mm
Vertical 234 mm ± 1.2 mm
Linearity
Scanning Direction Line
Scanner
ADF
0.5 mm or less
0.5 mm or less
Feeding Direction Line
Scanner
ADF
0.7 mm or less
0.7 mm or less