diff --git a/fichero_printer/fichero/imaging.py b/fichero_printer/fichero/imaging.py
index 5d1554b..f4e3c7a 100644
--- a/fichero_printer/fichero/imaging.py
+++ b/fichero_printer/fichero/imaging.py
@@ -5,7 +5,8 @@ import logging
 import numpy as np
 from PIL import Image, ImageDraw, ImageFont, ImageOps
 
-from fichero.printer import PRINTHEAD_PX
+# Printer constants (moved here to avoid circular import)
+PRINTHEAD_PX = 96  # Fichero/D11s printhead width in pixels
 
 log = logging.getLogger(__name__)