Browse Prior Art Database

Continuous Forms Burster

IP.com Disclosure Number: IPCOM000080938D
Original Publication Date: 1974-Mar-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Dowd, AA: AUTHOR

Abstract

Higher speed printers and the increasing need to increase throughput have emphasized the need for ways to reduce forms change time.

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Continuous Forms Burster

Higher speed printers and the increasing need to increase throughput have emphasized the need for ways to reduce forms change time.

If the forms are clamped at a point before they enter the forms feed, strains are created in the forms which can produce separation of the forms at a forms perforation. However, such separation may not be clean and it will be extremely noisy.

As shown in Fig. 1 forms 10 are passed around a forms guide 12 before they enter forms feed tractors 14. Clamp means 16 operated by a solenoid 18 are provided ahead of the guide for clamping the forms.

The guide 12 is supported at one end by a pivot 20 and is provided at the other end with an actuator 22 which moves that end of the guide in the direction of the forms feed, so as to provide a leading guide edge at the pivot end.

As shown in Fig. 2, this causes a concentration of tearing force at the pivot end of the guide 12, and separation of the forms 10 at the perforation, as at 24, commences at the pivot end 20 and progresses smoothly across the forms, providing a clean and quiet separation of the forms.

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