| 摘要 |
A single sheet feed system for feeding sheets, such as sheets of paper into a printer or other device which use individual sheets, such as a telefax machine or copier, is mounted on a tray that has a spring loaded bottom wall to urge a stack of sheets upwardly toward feed rollers. Scissor catches are provided at the leading edge corners and include stop and lift guides which will induce buckling of the corners of a sheet as the sheet is fed. The sheet is also guided by feed blocks adjacent the scissor catches, so that as the sheet is moved toward the printer the corners of a top sheet are caused to buckle and separate from the rest of the stack of sheets without allowing a second sheet to release from the tray as the top sheet is feeding into the printer. The stop and lift guides of the scissor catches cause top sheet to first slide upwardly and then the corners are retained and held from upward movement, so that buckling occurs adjacent corner portions of the top sheet along a leading edge to move the top sheet upwardly away from the stack. The buckled corners of the top sheet then slide along a guide edge. The scissor catches will release the buckled corners as the top sheet is fed further, to insure that only a single sheet is fed each time.
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