Photocopying – Contact printing – Light boxes
Patent
1994-08-29
1995-11-07
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
2989522, 2989532, 264311, 492 47, 492 59, G03G 1508
Patent
active
054651387
ABSTRACT:
A development apparatus includes a housing defining a chamber holding a supply of two-component developer material including toner, and magnetizable carrier beads. The development apparatus also includes an increased reliability roller assembly within the housing for repeatably transporting a desired quantity of attracted developer material through a development zone. The roller assembly includes a first and a second preformed end cap sections each having a stub shaft portion and a cylindrical capping portion connected to the stub shaft portion and having an outer surface and assembly recesses formed into the outer surface. The roller assembly also includes a sleeve section connecting the first and the second preformed end cap sections, the sleeve section being spincast as a layer over each of the cylindrical capping portions, and into the assembly recesses of the end cap sections, so as to precisely and reliably assemble each capping portion, to the sleeve section.
REFERENCES:
patent: 3823688 (1974-07-01), Klett
patent: 4034709 (1977-07-01), Fraser et al.
patent: 4057666 (1977-11-01), Drummond, Jr.
patent: 4267797 (1981-05-01), Huggins
patent: 5177538 (1993-01-01), Mammino et al.
patent: 5229813 (1993-07-01), Cherian
patent: 5245392 (1993-09-01), Behe et al.
Robert D. Bonham, "Snap Together Magnet Core Assembly", Xerox Disclosure Journal, vol. 5, No. 3, May/Jun. 1980, p. 313.
Robert D. Bonham, "Neck Down Flow Form Mag Brush Roll & Core", Xerox Disclosure Journal, vol. 6, No. 1, Jan./Feb. 1981, p. 25.
Coughlin Daniel L.
DiGravio Thomas L.
Gilmore, III Daniel R.
Jaskowiak Timothy R.
Perez Julie A.
Pendegrass Joan H.
Xerox Corporation
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