CommandsSensor calibration
^JM - Set Dots per Millimeter
Changes printing resolution (density)
^JM - Set Dots per Millimeter
Overview
The ^JM command changes the printing resolution by adjusting dots per millimeter. Allows reducing print density from standard (12, 8, or 6 dpmm) to lower density (6, 4, or 3 dpmm) for applications not requiring high resolution, improving print speed.
Syntax
^JMnParameters
- n = Density mode
- A = Normal density
- B = Low density
Description
- Adjusts print resolution
- Reduces density for speed
- Affects entire label format
- Must precede first ^FS
Resolution by Printhead
| Printhead | Mode A | Mode B |
|---|---|---|
| 12 dpmm | 12 dpmm | 6 dpmm |
| 8 dpmm | 8 dpmm | 4 dpmm |
| 6 dpmm | 6 dpmm | 3 dpmm |
Examples
Normal Resolution
^XA
^JMA
^FO50,50^A0N,30,30^FDTEXT^FS
^XZLow Density (Fast)
^XA
^JMB
^FO50,50^A0N,30,30^FDTEXT^FS
^XZConsiderations
Advantages of Low Density
- Faster printing
- Reduced media consumption
- Quicker output
- Draft quality acceptable
Disadvantages
- Lower quality output
- Reduced sharpness
- Smaller details lost
- Less professional appearance
Usage Notes
- Must be before first ^FS
- Affects entire format
- Useful for draft labels
- Good for large text
- Not for graphics/barcodes
Related Commands
^A- Scalable/Bitmapped Font^BY- Change Narrow Bar Width