Abstract: A sheet supply apparatus adapted for use with a recording apparatus such as a printer. The sheet supply apparatus comprises a frame having a sheet conveying surface, a shaft rotatably arranged above the sheet conveying surface, and a plurality of protrusions arranged on the shaft in the axially spaced relationship and at circumferentially different angles. The sheet is conveyed toward a horizontal member (such as conveying rollers in a printer) extending in the direction perpendicular to the sheet conveying direction along the sheet conveying surface by the protrusions so as to cause the sheet to abut against the transverse member. Oblique feeding of a sheet is thus corrected.

Abstract: A sheet supply apparatus can be releasably attached to a printer. The sheet supply apparatus includes a frame having a sheet conveyance surface, and a shaft arranged above the sheet conveyance surface and having protrusions for correcting inclined feeding of a sheet while conveying the sheet. A plurality of supply sensors are disposed above the sheet conveyance surface at positions beyond the shaft, and in a line parallel to the shaft, for detecting presence or absence of a sheet. The sensors can also detect the size of the sheet to control the carrier of the printer to realize a random set of the sheet.