Lexmark MC2640 Paper and Specialty Media Guide PDF - Page 22

Guidelines for selecting and using paper 22 Face type Total weight of label Edge matrix removal Location of strip Paper* (cut sheet or dual web) Vinyl 140-180 g/m2 265-300 g/m2 1.6 mm (0.0625 in.) 215.9 mm (8.5 in.) at leading edge 279.4 mm (11 in.) at driver edge (left margin side) Polyester and other face materials Varies * Use a non‑oozing adhesive. Using cut sheet labels with adhesive applied to the edge of the sheet contaminates and voids your printer and cartridge warranties. When using pressure‑sensitive materials without zone coating, choose butt cut labels without any stringers and with a stripped edge matrix. If a total strip matrix is in the design for the final product, then print before removing the matrix. If the matrix must be removed before printing, then round all corners, making sure that adhesive is not exposed. Cut sheet paper labels Generally, cut sheet paper labels work well with your printer. Coating or sizing to make the paper liquid‑resistant decreases toner adhesion and increases the risk of toner contaminating the fuser. At a minimum, paper labels should be equivalent in weight and rigidity to a 20‑lb xerographic bond paper. Dual web forms Constructing dual web forms involves joining rolls of two different materials (usually pressure‑sensitive paper and bond paper) and then converting to a cut sheet product. This construction requires a stripped edge matrix. The liner must be rigid enough to withstand the pick force of the printer. The two materials must be thin enough for the sheet to lie flat in the paper tray. The differences in thickness may cause the materials to curl down toward the leading edge of the form which can negatively affect feeding. We recommend that the leading label edge should be thicker than the dual web overlap to make sure that the sheet lies flat in the tray. The label should be placed with the label facedown in the tray. Orient the label in the tray so that the pressure‑sensitive area feeds into the printer first. The label should have no adhesive exposed in the overlay area or anywhere along the front or back of the label. We recommend designing a non‑adhesive strip with a minimum width of 1 mm (0.04 in.) along the edges of the overlay. To help prevent material from slipping in the fuser, we recommend knurling, which roughens up the exposed silicon area at the glue joint. The face sheet of a dual web form is usually a paper pressure‑sensitive product; therefore, the guidelines for paper labels are applicable to dual web forms. The following diagram shows the recommended dual web form design. The non‑print area may vary depending on the printer model.