Verbatim Corporation

Lawrence G Martinelli

Mark R Garrison

A method of manufacturing a flexible recording disk with a reinforced aperture region comprising the steps of transferring uncured polymeric material to a printing plate having an elastomeric protrusion thereon, transferring at least a portion of the uncured polymeric material from the elastomeric protrusion to a region on a surface on a flexible magnetic material, curing the polymeric material, and cutting a flexible disk from the flexible magnetic material such that the disk has a central aperture surrounded by the region of the flexible material coated with the cured polymeric material.

Method of manufacturing reinforced flexible disks

A method for cold-forming light gauge polymer sheet material by application of localized heat to the area of the fold. In the manufacture of Lexan polycarbonate flexible magnetic disk jackets, heat is applied to the folded edge by a heating element generally maintained uniformly at 375.degree. F. The heating element contacts the folded Lexan polycarbonate edge in a U-shaped trough having planar sidewalls generally perpendicular to a planar bottom wall.

Forming process for light gauge polymer sheet material

An improved floppy disk having a liner material into the fibers of which has been compounded identically the same lubricant as that compounded into the surface of the magnetic recording disk.

Method for making a self-lubricating liner

An improved wet cleaning disk assembly for use in cleaning reading and writing transducers of a floppy disk drive. The cleaning disk assembly includes an envelope having apertures formed therethrough for receiving reading and writing transducers and a reinforced opening along one edge thereof for insertion of a cleaning disk thereinto. In use, a cleaning disk, presoaked with a liquid cleaning solution, is removed from a sealed package and inserted into the envelope to form the cleaning assembly which is then inserted into a floppy disk drive. A spindle within the drive passes through a central aperture therefor in the envelope and through a central aperture in the disk to thereby engage the disk and rotate it within the envelope. The envelope and cleaning disk also include sensing apertures adapted to permit optical sensing of disk rotation by the drive. The cleaning disk facilitates this sensing by means of an opaque, C-shaped region printed thereon within an annular region about the central aperture of the disk which includes the sensing aperture. The disk further includes an annular shaped reinforcement formed on a side surface of the disk in the region thereof which is engaged by the spindle of the floppy disk drive. This cleaning disk assembly may be used to clean a floppy disk drive having a single reading and writing transducer by securing a removable cover over one of the apertures formed therefor in the envelope prior to its insertion into such a drive.

Cleaning disk

Self-lubricating liner

Apparatus and method for rapidly removing fuzz from about the edges of sheets of material and apertures within those sheets without damaging the sheet material performed by passing the sheet quickly through a flame.

Apparatus and method for fuzz removal from edges of sheet material

A method for cold-forming light gauge polymer sheet material by application of localized heat to the area of the fold. In the manufacture of Lexan polycarbonate flexible magnetic disk jackets, heat is applied to the folded corner by a heater bar generally maintained uniformly at 375.degree. F. The heater bar contacts the folded Lexan polycarbonate edge in a U-shaped trough having planar side walls generally perpendicular to a planar bottom wall.

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San Jose, CA, United States of America

Lawrence G Martinelli