Tray for narrow and normal width sheets
AssigneeLemark International, Inc.
InventorsDaniel Eugene Armstrong, Daniel Paul Cahill
Life of this patent
Estimating the term…
Abstract
A sheet support tray has its bottom support wall formed with a lower level planar portion and an upper level planar portion. The upper level planar portion extends from a reference edge a distance so that only one of two feed rollers can engage its sheet support surface, which has a last sheet restraint pad on it for engaging the one feed roller after the last sheet has been fed. The other feed roller cannot engage a last sheet restraint pad on the lower level planar portion so that narrow width sheets can be fed without skewing by the one feed roller.
Claims10
A sheet support tray for supporting a stack of sheets of a media from which each of the sheets is to be fed separately including:
- a bottom wall for supporting the stack of sheets;
- substantially parallel side walls extending upwardly from opposite sides of said bottom wall;
- said bottom wall including a lower planar portion and an upper planar portion disposed a predetermined distance above said lower planar portion, said upper planar portion being smaller than said lower planar portion so that the stack of sheets rests on at least said upper planar portion and on both said lower planar portion and said upper planar portion depending on the dimensions of the stack of sheets;
- one of said side walls having a reference guide edge against which an edge of each of the sheets of the stack of sheets engages;
- an inclined wall extending between said side walls and against which each sheet is advanced from the stack of sheets;
- each of said lower planar portion and said upper planar portion having a last sheet restraint pad for cooperating with a separate feed roller of sheet advancing means for advancing the uppermost of the sheets from the stack of sheets against said inclined wall;
- said upper planar portion extending from said one side wall a distance less than the position of said last sheet restraint pad of said lower planar portion from said one side wall;
- and movable holding means for engaging the rear and the side, remote from said one side wall, of the stack of sheets of media for holding the stack of sheets for engagement of the uppermost sheet by at least the separate feed roller of the sheet advancing means that cooperates with said last sheet restraint pad on said upper planar portion.
A sheet separator for advancing the uppermost sheet of a stack of sheets of media from the stack of sheets including:
- sheet advancing means for advancing the uppermost sheet from the stack of sheets;
- said sheet advancing means including at least two feed rollers for engaging the uppermost sheet of the stack of sheets to advance the uppermost sheet from the stack of sheets;
- and a sheet support tray including:
- a bottom wall for supporting the stack of sheets;
- substantially parallel side walls extending upwardly from opposite sides of said bottom wall;
- said bottom wall including a lower planar portion and an upper planar portion disposed a predetermined distance above said lower planar portion;
- one of said side walls having a reference guide edge against which an edge of each of the sheets of the stack of sheets engages;
- an inclined wall extending between said side walls and against which each sheet is advanced from the stack of sheets by said sheet advancing means;
- each of said lower planar portion and said upper planar portion having a last sheet restraint pad for cooperating with one of said feed rollers of said sheet advancing means;
- said upper planar portion extending from said one side wall a distance less than the position of said last sheet restraint pad of said lower planar portion from said one side wall;
- and movable holding means for engaging the rear edge and the side edge, remote from said one side wall, of the stack of sheets of media for holding the stack of sheets for engagement of the uppermost sheet by at least said one feed roller of said sheet advancing means.
Dependencies are inferred from the claim text.