| 主权项 |
1. A sheet feeder, comprising:
a sheet roll constituted of one long continuous sheet wound, starting with a trailing end of the sheet roll, around a core; a sheet conveyance unit including
one or more conveyance members to convey in a conveyance direction the sheet fed from the sheet roll, anda contact member that is upstream, in the conveyance direction, of the conveyance members and contacts at a contact point to an upper surface of the sheet fed from the sheet roll; a trailing end detector which (i) is rotatable about a rotary shaft that is disposed at a position closer to the sheet conveyance unit than to the sheet roll and (ii) is disposed to contact an upper surface of the sheet extended between the core of the sheet roll and the contact member when the sheet is guided by the contact member upward in the conveyance direction, the trailing end detector detecting the trailing end of the sheet roll upon being rotated upward by displacement of the upper surface of the sheet to a position above a notional line connecting the contact point of the contact member and a lowest part of the outer circumference of the core; and a support member that supports both of the contact member and the trailing end detector. |
