Disk-bound notebook system with sheets and sheets therefor

A notebook system comprising a pair of covers, a plurality of sheets and a plurality of disks, each of said disks being circular and having a generally planar central section and an enlarged peripheral rim, each of said sheets comprising a web of material having an inner edge portion including an inner edge and a plurality of slots spaced along said inner edge, each of said slots comprising an entryway channel extending inward from said inner edge and terminating at an enlarged opening, said inner edge portion being reinforced by a reinforcing strip of material extending along said inner edge, said slots extending into said reinforcing strip.

A sheet for forming a page of a notebook system, the notebook system comprising a pair of covers and a plurality of disks, each of the disks being circular and having a generally planar central section and an enlarged peripheral rim, said sheet comprising a web of material having an inner edge portion, said inner edge portion including an inner edge and a plurality of slots spaced along said inner edge, each of said slots comprising an entryway channel extending inward from said inner edge and terminating at an enlarged opening, wherein said channel extends inward from said inner edge generally perpendicular to said inner edge and wherein each of said enlarged openings comprises an inner end which is arcuate, said inner end having a pair of ends, each of which is generally linear and extends parallel to said channel to thereby form a slot which is somewhat mushroom-like in shape.