| 摘要 |
A sheet feeder includes a feed roller and pressure rollers for feeding a sheet of paper through the nips each between the feed roller and one of the pressure rollers. The feeder also includes a sheet passage for feeding a sheet of paper through it with an edge of the sheet guided along a side edge of the passage. Each of the pressure rollers is urged against the feed roller by an urging member. The guide edge of the passage is spaced from the adjacent end of the feed roller. Fitted between the edge and the end is a detector for detecting the presence of a sheet of paper. The urging member nearest to the guide edge of the passage is greater in urging force than any other urging member. Therefore, the feeder can feed a sheet of paper without inclining it.
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