Stamp artwork must be in vector format and all text converted to outlines, sent as a PDF file. Pixel-based images cannot be used in Rubber Stamp files. Fine lines and detail should be a minimum of 1pt line thickness, including the "white" lines (or the negative spaces in between).
Rubber stamps do not require bleed or a safety margin – your design can extend to the very edge of the stamp.
Your design will need to be submitted in black and white only, meaning the black areas will be produced as the raised part of the stamp. Black must be 100% CMYK Black (0,0,0,100).
The design file should be right-reading (not flipped or inverted), ie. showing what the final ink imprint will be when stamped onto paper.