Appendix A – Specifications  73 
Approved Media 
To achieve optimum print quality and maximum printhead life, Datamax-O’Neil specifies the use of 
Datamax-O’Neil brand media and ribbons.  These supplies are specially formulated for use in our 
printers; use of non-Datamax-O’Neil supplies may affect the print quality, performance, and life of 
the printer or its components. 
 
For a current list of approved media and ribbons for use in direct thermal and thermal transfer 
applications, please contact a Media Representative at (407) 523-5650. 
 
 
E
J
I
C
K
A
B
D
H
F
G
Side View
Top View
 
 
 
Media Dimensional Requirements 
Designator  Description  Minimum
 [1]
  Maximum
 [1]
 
A Label width  1.00  4.65 
B  Liner width   1.00  4.65 
C  Gap (or notch) between labels
[3]
 .10 – 
D Label length
[3]
 .25 – 
E Media thickness  .0025  .010 
F Notch opening width  .20  .500 
G  Media edge to sensor aperture distance   .20  2.25 
H  Reflective (black) mark width
[2]
 .50 4.65 
I  Distance between reflective marks
[3]
 .50 – 
J  Reflective mark length
[3]
 .10 – 
K  Label repeat distance
[3]
 .35 – 
[1] 
Units of measure are given in inches and referenced by the direction of label feed. 
[2] 
The reflective (black) mark must be carbon based, placed on the backside of the stock, and the 
reflectance shall be less than 10% at wavelengths of 950 and 640 nm. 
[3] 
The maximum allowable length of the combined label and gap (or mark) measurement cannot 
exceed 99.99 inches.