Photocopying – Contact printing – Light boxes
Patent
1988-10-03
1991-10-01
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355285, 355295, 219216, G03G 1520
Patent
active
050538292
ABSTRACT:
A heat and pressure fusing apparatus for fixing toner images to substrates such as plain paper, the toner comprising a thermoplastic resin. The apparatus includes two nip forming members which cooperate to form a nip having an asymmetrical pressure profile. Thus, the pressure profile through the nip, from entrance to exit, is such that toner images on a substrate passing through the nip are first subjected to relatively low pressure which continues until the toner begins to flow. Once toner flow commences, the images are subjected to pressure high enough to force the toner into the substrate. The nip is readily variable for accommodating different fusing speeds for different processors.
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Field John R.
Karz Robert S.
Mathers James E.
Moser Rabin
Grimley A. T.
Smith Matthew S.
Xerox Corporation
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