HP LaserJet Enterprise 500 Maintenance Manual - Page 302

Appendix F Paper Guidelines 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 Any method of attachment (staples, crimps, gluing, etc.) must be designed in a way that does not permit air to be trapped between copies of a form. Hard or wire brads and staples must not be used. Any attachment must not coincide with the major perforation or any horizontal perforation. Gluing Gluing must be controlled and uniform, since it is a major contributor to the maximum form thickness. A form that meets the maximum forms thickness requirement in the print area but which exceeds the maximum thickness at a glue line is considered an unreliable and unpredictable form. Staples Staples must be used only in the margin area of the form and must not be in line with the path of the tractor holes. Ideally, staples are placed in the margins so that they coincide with areas of the form where printing does not occur. The figure below shows acceptable and unacceptable ways of fabricating staples. 302