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Paper Feed Device

IP.com Disclosure Number: IPCOM000078188D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Kaufmann, R: AUTHOR [+2]

Abstract

This paper feeding device permits the paper form to be readily inserted. With the help of tractors 1, 2 of different length, 2 being shorter than 1, paper form 3 inserted by hand is automatically picked by the moving pins of tractor 1 and passed along until it is Picked by tractor 2. During this step, tractor lids 4 (in exploded view) which are forced against the tractor belt by spring tension remain closed. As the paper form is loaded, tractors 1 and 2 operate at a reduced speed of approximately 3"/sec, with motor 5 driving the tractors being switched on either by a "form feed" switch, or upon introducing paper form 3 by switches arranged in the area of the paper support in front of the tractors.

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Paper Feed Device

This paper feeding device permits the paper form to be readily inserted. With the help of tractors 1, 2 of different length, 2 being shorter than 1, paper form 3 inserted by hand is automatically picked by the moving pins of tractor 1 and passed along until it is Picked by tractor 2. During this step, tractor lids 4 (in exploded view) which are forced against the tractor belt by spring tension remain closed. As the paper form is loaded, tractors 1 and 2 operate at a reduced speed of approximately 3"/sec, with motor 5 driving the tractors being switched on either by a "form feed" switch, or upon introducing paper form 3 by switches arranged in the area of the paper support in front of the tractors.

As soon as paper form 3 is engaged by the pins of tractor 2, the operating speed of the printer can be increased automatically or, alternatively, the paper form moves at a reduced loading speed up to the first printing line where it is stopped automatically, to subsequently move at operating speed after the first line has been printed. The spring-loaded engaging rolls 6, 7 in front of the left tractor 1 operates at a speed equal to the tractor speed, and ensure that paper form 3 is inserted into tractor 1 at the appropriate speed. Stationary stop 8 is linked with tractor 1, being laterally adjustable together with the latter via the form carriage. The right tractor 2 can be adjusted to the respective form width, either by hand or under the control of a...