Browse Prior Art Database

Sheet Stacker

IP.com Disclosure Number: IPCOM000052716D
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Sakai, M: AUTHOR

Abstract

An inclined stacker is provided with a pair of guide bars which are moved to receive a sheet of paper to be stacked and to escape from the receiving position for stacking the received sheet onto the stacked papers.

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Sheet Stacker

An inclined stacker is provided with a pair of guide bars which are moved to receive a sheet of paper to be stacked and to escape from the receiving position for stacking the received sheet onto the stacked papers.

The stacker is inclined about 15 degrees through 45 degrees from the vertical axis for use in a facsimile apparatus, a copying machine, etc., into which original documents, sheets of copy papers, etc., of various lengths or thicknesses fall by gravity for stacking in the stacker. Due to the natural fall into the stacker, a short original document tends to flutter or fly in the stacker and a thin original document tends to bend itself in the stacker, resulting in an erroneously stacked condition.

To solve the problem, the stacker is provided with a pair of guide bars 1 and 2, each of which has its lower end pivotally mounted at the bottom of the stacker, as shown in Fig. 1. Fig. 2 shows a mechanism attached on a back side of the stacker for moving both guide bars 1 and 2, which includes a solenoid 4, a buffer spring 5, wires 6 and 7, arms 8 and 9, couplers 10 and 11, stoppers 12, 13, 13', 14 and 14' and springs 15 and 16. Each of the lower ends of the guide bars 1 and 2 is coupled to the arms 8 and 9 through the couplers 10 and 11, respectively. When the solenoid 4 is activated, the buffer spring 5 is pulled towards the solenoid 4 causing the arms 8 and 9 to be moved to the stoppers 13 and 14, respectively, so that the guide bars 1 and 2 a...