Intermec PC4 Programmer's Reference Manual page 78

Chapter 4 — ESim Commands
64
Test after the print speed has been set, see
page 110, and make further adjustments until you have found the
settings which best apply to your unique application.
Example:
To select a printhead density of 9, enter the command below:
D9
Recommended density settings are identified in the following tables.
Further adjustments might be necessary depending on print speed,
bar code density, orientation, and ambient temperature/humidity
conditions.
Recommended Density Settings For Direct Thermal Printing
Label/Tag Type
Duratherm II
Duratherm II Tag
Duratherm Lightning
Duratherm IR
Thermal Top
Thermal Eco
Thermal Top Board
Thermal Eco Board
Thermal IR
Thermal Top High Speed
Duratherm Lightning
Recommended Density Settings For Thermal Transfer Printing
Label/Tag Type
Duratran II
Duratran II Tag
ESim for the PC4 and PF8 Printers Programmer's Reference Manual
"S - Speed Select" on
Recommended
Density at Speed
S = 2
D10
D9
D9
D7
D8
D8
D11
D7
D12
D6
D9
Recommended
Density at Speed S
Ribbon Type = 2
Standard D4
Standard D4
Maximum Speed
S3
S1
S3
S3
S3
S3
S2
S2
S3
S3
S3
Maximum
Speed
S3
S2