Patent ID: 7789232

Claim:
A sheet package that can be set in a printer for supplying the printer sheets as print media, comprising: a stack of sheets, including opposing top and bottom sheets; and a package member covering an exterior of the stack of sheets, wherein: the package member includes: a rectangular first portion which forms a bottom portion of said package member and covers a part of a bottom surface of said bottom sheet; a rectangular second portion which forms a lid base portion of said package member and foldably connects with one end of the first portion, whereby said second portion covers or exposes a remaining part of said bottom surface of said bottom sheet; and a rectangular third portion which covers a top surface of said top sheet and connects with said first portion through one of a pair of opposing side ends, said third portion including an edge with one of a detection hole and a detection cutout for an optical sensor for detecting a presence or an absence of a sheet of the stack of sheets, the detection hole or detection cutout positioned against said top surface of said top sheet so that said detection hole or detection cutout: (i) overlies said second portion of said package when said second portion covers said remaining part of said bottom surface of said bottom sheet; and (ii) does not overlie said second portion of said package when said second portion exposes said remaining part of said bottom surface of said bottom sheet.