Browse Prior Art Database

Sheet Feed Tray

IP.com Disclosure Number: IPCOM000039498D
Original Publication Date: 1987-Jun-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Voit, WF: AUTHOR

Abstract

A tray is disposed on top of a stack of sheets to enable feeding of each sheet with a single-feed roller and a single-corner buckler without skewing. The tray also allows feeding of a single sheet, not in the stack, or an envelope by the single-feed roller. A tray 1, which may be formed of metal or plastic, is positioned on top of a stack 2 of sheets of paper. Each sheet of paper in the stack 2 is fed from the top of the stack 2 by a single D-shaped feed roll 3 advancing the top sheet past a single-corner buckler 4. The feed roller 3 could be an eccentric rather than D-shaped, if desired. The stack 2 is spring biased upwardly for engagement by the feed roller 3 by a spring being made effective by a cam only when feeding of the top sheet of the stack 2 is to occur.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 61% of the total text.

Page 1 of 2

Sheet Feed Tray

A tray is disposed on top of a stack of sheets to enable feeding of each sheet with a single-feed roller and a single-corner buckler without skewing. The tray also allows feeding of a single sheet, not in the stack, or an envelope by the single-feed roller. A tray 1, which may be formed of metal or plastic, is positioned on top of a stack 2 of sheets of paper. Each sheet of paper in the stack 2 is fed from the top of the stack 2 by a single D-shaped feed roll 3 advancing the top sheet past a single-corner buckler 4. The feed roller 3 could be an eccentric rather than D-shaped, if desired. The stack 2 is spring biased upwardly for engagement by the feed roller 3 by a spring being made effective by a cam only when feeding of the top sheet of the stack 2 is to occur. The spring is ineffective the remainder of the time so that the top of the stack 2 is spaced from the feed roller 3. The tray 1 provides sufficient column strength to the top sheet of the stack 2 to enable use of only the single-corner buckler 4 and the single-feed roller 3. This avoids the problems of alignment of two corner bucklers and two feed rollers. The tray 1 has an extension 5 positioned behind a portion of a vertical wall 6 and an extension 7 positioned behind another portion of the vertical wall 6. This permits the tray 1 to be pivoted to load sheets of paper to form the stack 2 of sheets of paper. The tray 1 also may be employed to permit feeding of a single sheet 8 (shown in...