HP LaserJet Enterprise 500 Maintenance Manual - Page 305

Chaff Content unreliable and unpredictable form. Perforation thickness must not exceed the maximum form thickness of 0.025 in. / 0.0635 cm. Tractor Pin Holes The holes which engage the tractor pins must conform to the following specifications: Specification Hole centerline (CL) to edge of form Hole Diameter (Serrations or any occlusion due to incorrect registration of multipart forms cannot exceed this dimension.) Distance between centers of two consecutive holes Maximum deviation of holes from their centerline Maximum deviation of lefthand hole to adjacent righthand hole (CL to CL) Maximum parallel deviation of lefthand hole CL to righthand hole CL Inches 0.236 ± 0.028 0.156 ± 0.004 0.500 ± 0.002 0.004 0.006 0.006 Millimeters 6.0 ± 0.1 4.0 ± 0.1 12.7 ± 0.05 0.1 0.15 0.15 Methods of Forms Attachment ________ Must not allow air entrapment between copies of the form ________ Must not use hard brads or staples ________ Must not coincide with major perforation or any horizontal perforation ________ Gluing lines must not result in a form that exceeds 0.025 in. / 0.0635 cm thickness ________ Staples must be used only in margin area of form ________ Staple cuts must not be in the direction of form movement through the tractors ________ Staples must not occur in-line with the path of the tractor holes ________ Staples should be placed in the margins so that they coincide with areas of the form where printing will not occur Cut-to-Tie Ratio ____:____ (Typical ratio is 4:1, or 80% cut to 20% tie) 305