Browse Prior Art Database

Automatic Feed Mechanism

IP.com Disclosure Number: IPCOM000075443D
Original Publication Date: 1971-Sep-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Crawford, RP: AUTHOR

Abstract

An automatic feed mechanism is shown for initially threading a paper web through the paper feed path of an electrostatic printer. The transfer paper carriage 10 normally utilizes a double-sided tractor 12 to feed paper into and out of the transfer station. However, for automatic loading operations, the transfer paper carriage 10 is pivoted 90 degrees about the tractor drive shaft (to the position shown dotted in the drawing) so that the paper can be driven in a substantially straight line path for automatic threading. By using only the input side of the tractor 12, the paper is fed along the paper path including tractor 12 and automatic thread-belt transport 14 to output tractor 16.

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Automatic Feed Mechanism

An automatic feed mechanism is shown for initially threading a paper web through the paper feed path of an electrostatic printer. The transfer paper carriage 10 normally utilizes a double-sided tractor 12 to feed paper into and out of the transfer station. However, for automatic loading operations, the transfer paper carriage 10 is pivoted 90 degrees about the tractor drive shaft (to the position shown dotted in the drawing) so that the paper can be driven in a substantially straight line path for automatic threading. By using only the input side of the tractor 12, the paper is fed along the paper path including tractor 12 and automatic thread-belt transport 14 to output tractor 16. Transport 14 is driven at a greater speed than tractors 12, 16, to remove any web misalignment which may have occurred between the transfer tractor and the transport belts. When the leading edge of the paper web reaches a suitable registration point, its forward progress is stopped and the transfer paper carriage 10 is lowered as paper is being fed. At the appropriate time the paper web is threaded through the output side of the transfer carriage, and a suitable buffer loop is formed between the transport carriage and the output tractor. The printer is then ready to begin processing.

The transfer corona 18 is moved to a position adjacent to the belts of transport 14 at the beginning of the automatic feed operation. If desired, the transfer corona can be turned...