SHEET FEEDER, AND IMAGE FORMING DEVICE PROVIDED THEREWITH

摘要

A sheet feeder includes a tray, a paper feed member, a first detection section, and a second detection section. The tray has a placement surface having an upper surface on which a sheet is placed. The paper feed member is arranged on an entrance side of a sheet conveyance path and conveys the sheet in a conveyance direction. The first detection section detects a leading end side in the conveyance direction of the sheet placed on the placement surface. The second detection section detects a trailing end side in the conveyance direction of the sheet placed on the placement surface. The second detection section is arranged at an end section of the tray on a trailing end side in the conveyance direction.

主权项

1. A sheet feeder, comprising:
a case; a tray which is arranged in the case and which has a placement surface having an upper surface on which a sheet is placed; a sheet conveyance path which extends from the tray in the case and through which the sheet is conveyed in a predetermined conveyance direction; a paper feed member which is arranged on an entrance side of the sheet conveyance path and which conveys the sheet in the conveyance direction; a first detection section which detects a leading end side in the conveyance direction of the sheet placed on the placement surface and a second detection section which is arranged at an end section of the tray on a trailing end side in the conveyance direction and which detects a trailing end side in the conveyance direction of the sheet placed on the placement surface; and a restricting member which restricts a leading end edge of the sheet placed on the tray, wherein a distance from the restricting member to the second detection section in the conveyance direction is longer than 210 mm and shorter than 315 mm.