HP LQH-HW 3ULQWHUV User Manual download pdf (Page 281)

Chaff Content

281

Cut-To-Tie Ratio

A common cut-to-tie ratio for bond forms is 4:1 (that is, 80% cut to 20% ties).

This value is dictated chiefly by the application program under which the form

runs. Lower cut-to-tie ratios will yield better form handling, but stacking may

suffer due to increased stiffness of the perforations. Some level of

experimentation is required to determine the best cut-to-tie ratio. But

remember that a cut-to-tie ratio that causes a thickness buildup of greater

than 0.025 inch (0.635 mm) or that creates an evenness variation of greater

than 0.003 inch (0.0762 mm) will result in an unreliable and unpredictable

form.

Perforation Intersections

Whenever a horizontal perforation intersects with a vertical perforation, the

point of intersection must be a tie point. Cut points at such intersections make

the form unacceptable.

Chaff Content

Tractors holes should be clear of chaff. As much as possible, there should not

be loose chaff in the box in which the paper is packed.

Preferred Unacceptable

Cut Point

Tie Point

Cut Point

Tie Point

Direction of

Forms

Movement

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HP LQH-HW 3ULQWHUV User Manual Page 281