Browse Prior Art Database

Document Feed Device

IP.com Disclosure Number: IPCOM000099229D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Berlier, RA: AUTHOR [+3]

Abstract

This article discloses an entrance guide into a printing machine and a smooth top shield over the as it enters the printing station. The top shield movable to allow passage of the print head during

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 79% of the total text.

Document Feed Device

       This article discloses an entrance guide into a printing
machine and a smooth top shield over the as it enters the printing
station.  The top shield movable to allow passage of the print head
during

      This design comprises a freely pivotable entrance guide which
extends between the front feed rolls 13 to the cover.  The entrance
guide controls the document and the leading edge into the feed rolls
and skew device 19 to eliminate jams normally caused by corners.  The
entrance guide is mounted to the top shield shaft 15, such that it is
free to rotate gravity without restriction.

      The movable top shield 17 is rigidly fixed to the pivot 15 with
mounting tabs alternating the freely rotating of the entrance guide
in a manner to provide a smooth  The movable top shield extends from
the skew device 19 rearward to the rear feed rolls 21.

      The movable top shield 17 is rotated by means of a gear driven
by a small stepper motor to reciprocate an arc of 135 degrees.

      In operation, when a document is presented to the and actuates
the start sensor with the print head 23 home position all the way to
one side, the movable top 17 is rotated from its "at rest" or open
position to the closed position, forming a smooth top guiding  When
the document reaches the print station and is for printing, the motor
drives the top shield to the open position, providing a clear path
for the head.  After the print head returns to...