Sheet feeder and image formation apparatus

摘要: PROBLEM TO BE SOLVED: To provide a sheet feeder and an image formation apparatus capable of feeding sheets while separating the one by without damage to delay deal with acceleration like printer.SOLUTION: A feed unit includes nip guide member 26 having tip end urged toward roller 4 at position away from predetermined length, inclined surface 26a S separation portion N. The further support means for supporting so as not move in direction if thickness bundle entering is smaller than length between end, that can larger length.