Zebra 49834 사용자 설명서

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170PAX4 Maintenance Manual

57518L-001 Rev. A

3/18/05

Print Engine Diagnostics

Note the relative darkness value and the print speed printed on the best test label.

Add or subtract the relative darkness value from the darkness value specified on the 
configuration label. The resulting numeric value (0 to 30) is the best darkness value for 
that specific label/ribbon combination and print speed.

If necessary, change the darkness value to the best darkness value, as determined by the 
test. See 

If necessary, change the print speed to the same speed as on the best test label. See 

.

Labels that are too dark are fairly obvious. They may be 
readable but not “in-spec.” 

• The normal bar code bars increase in size.

• The openings in small alphanumeric characters may fill in 

with ink. 

• Rotated bar code bars and spaces run together.

Slightly dark labels are not as obvious. 

• The normal bar code will be “in-spec.” 

• Small character alpha numerics will be bold and could be 

slightly filled in. 

• The rotated bar code spaces are small when compared to 

the “in-spec” code, possibly making the code unreadable.

The “in-spec” bar code can only be confirmed by a verifier, 
but it should exhibit some visible characteristics.

• The normal bar code will have complete, even bars and 

clear, distinct spaces. 

• The rotated bar code will have complete, even bars and 

clear, distinct spaces. Although it may not look as good as 
a slightly dark bar code, the bar code will be “in-spec.” 

• In both normal and rotated styles, small alphanumeric 

characters look complete.

Slightly light labels are, in some cases, preferred to slightly 
dark ones for “in-spec” bar codes. 

• Both normal and rotated bar codes will be in spec, but 

small alphanumeric characters may not be complete.

Labels that are too light are obvious. 

• Both normal and rotated bar codes have incomplete bars 

and spaces. 

• Small alphanumeric characters are unreadable.