HP LaserJet Enterprise 500 Maintenance Manual - Page 301

Environmental Considerations Environmental Considerations Before they are used, forms should be stored for at least 24 hours- preferably 48 hours-in the environment in which they will be used. This stabilizes the moisture content of the paper, resulting in better feeding and stacking. But forms should never be stored in environments that result in damage such as delamination of glues, creasing, folding, etc. Form Types Three kinds of continuous form paper are specified for use with the printer: • Edge-perforated, fanfolded, single-part forms • 2- to 6-part multipart carbon forms • 2- to 4-part multipart carbonless forms For all forms, the width range is 3 to 16 inches, the length range is 3 to 12 inches. Form Weight Use 15 to 100 pound (6.80 to 45.36 kg) stock. Light weight and recycled forms must be strong enough to assure that tractor holes and perforations do not tear or detach during form feed, skipping, and ejecting operations. Form Thickness Forms must be no thicker than 0.025 inches (0.0635 cm). This figure is for the thickest point of the form-including glue lines, staples, perforations, etc.- and is not restricted to just the print area. Form Evenness The evenness of forms must not exceed 0.003 inches (0.00762 cm) across the print area (between the side perforations). Tenting caused by buildup of perforation thickness must be minimized. A perforation thickness measured at the major perforation that exceeds 1.25 times the forms thickness measured in the print area will result in an unpredictable and unreliable form. The perforation thickness must never exceed the maximum forms thickness of 0.025 inches (0.0635 cm). Tractor Pin Engagement The printer uses tractors with 6-pin engagement. Detailed engagement specifications are given in ISO-2784, but are summarized in the table below. 301