Magnet assembly with inserts and method of manufacturing

A developer unit in an electrophotographic printing machine comprising:

• a housing defining a chamber for storing a supply of toner particles therein;
• and
• a magnetic roll for transporting the toner particles on a sleeve surrounding a portion of the magnetic roll from the chamber of the housing to a photoconductive member, the magnetic roll including an elongated member;
• a core made of a moldable material, the core molded onto the elongated member, the core defining a pocket open to a surface on the periphery thereof;
• a magnet secured to the pocket;
• and
• a mechanical locking device within the pocket for securing the magnet to the core wherein the mechanical locking device comprises a tab extending from a side of one of the pocket or the magnet into a notch in the side of the other of the pocket or the magnet.

An electrophotographic printing machine comprising:

• a housing defining a chamber for storing a supply of toner particles therein;
• and
• a magnetic roll for transporting the toner particles on a sleeve surrounding a portion of the roll from the chamber of the housing to the member, the magnetic roll including an elongated member;
• a core made of a moldable material, the core molded onto the elongated member, the core defining a pocket located on the periphery thereof, a magnet secured to the pocket, and a mechanical locking device within the pocket for securing the magnet to the pocket wherein the mechanical locking device comprises a tab extending from a side of one of the pocket or the magnet into a notch in the side of other of the pocket or the magnet.

An electrophotographic printing machine comprising:

• a housing defining a chamber for storing a supply of toner particles therein;
• and
• a magnetic roll for transporting the toner particles, the magnetic roll including an elongated member, a core made of a moldable material, and one or more magnets secured to one or more pockets, the core molded onto the elongated member;
• wherein the one or more pockets include spaced apart, outwardly extending pocket walls, the pocket walls defining a pocket angle therebetween;
• and wherein the one or more magnets includes spaced apart, outwardly extending magnet walls, the outwardly extending magnet walls extending from a base in the core to an outside perimeter of the core and defining a magnet angle therebetween, the magnet angle being greater than the pocket angle, the outwardly extending magnet walls of the one or more magnets interferencely secured to the outwardly extending pocket walls of the one or more pockets.