Adhesive labels When printing on labels, use of tray 1 is recommended. Labels are multiple-layer media typically consisting of a face sheet (the printable surface), pressure-sensitive adhesive, and a liner (a carrier sheet coated with a release agent). Labels used in the HP LaserJet printer must be specifically designed for laser printers. If labels other than those compatible with laser printers are used, there is a significant risk of labels peeling or of adhesive contamination that can severely damage the printer. All materials in laser label stock must be compatible with the heat and pressure of the fusing process.
The table below summarizes the adhesive label specifications that provide the best performance. Table 11. Adhesive labels specifications EN Chapter 1 Printer description 31 Property Specifications Adhesive Must not be on any external surfaces of the label before, during, or after printing. Label construction, adhesive release strength, and die-cutting must not allow labels to peel off during printing. Caliper (thickness) Must not exceed 0.23 mm (9.0 mils). Fusing compatibility All inks, adhesives, and other materials used in the label construction must be compatible with the heat and pressure of the fusing process.
Materials must not scorch, melt, ignite, offset materials, or release undesirable emissions when heated to a temperature between 175° to 230° C (347° to 446° F) for 0.1 second. Packaging Adhesive labels should be packaged in moisture-proof wrap to preserve properties. Shelf life One year maximum, stored at 23° C (73° F) and 50 percent RH.