(19)
(11) EP 0 296 819 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.06.1990 Bulletin 1990/24

(43) Date of publication A2:
28.12.1988 Bulletin 1988/52

(21) Application number: 88305680.6

(22) Date of filing: 22.06.1988
(51) International Patent Classification (IPC)4: G03G 15/20
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 22.06.1987 GB 8714587

(71) Applicant: XEROX CORPORATION
Rochester New York 14644 (US)

(72) Inventors:
  • Collier, Barry John
    Henlow Bedfordshire (GB)
  • Hale, Joseph Frederick
    Welwyn Hertfordshire (GB)
  • Pitts, Ian
    Cambridge Cambridgeshire (GB)

(74) Representative: Hill, Cecilia Ann et al
Rank Xerox Ltd Patent Department Parkway
Marlow Buckinghamshire SL7 1YL
Marlow Buckinghamshire SL7 1YL (GB)


(56) References cited: : 
   
       


    (54) Toner Fusing Apparatus


    (57) Apparatus for applying release oil to a fuser roller pair (10a, 10b) in a xerographic copier comprises an elongate trough (41) containing a supply of oil (42) in the base (44) thereof, and a wick (45) for drawing up the oil from the trough and applying it to a metering roller (47). The metering roller applies the oil to a donor roller (48) which in turn transfers the oil to the heated roller (10a) of the fuser roller pair. The amount of oil on the metering roller (47) is checked by a blade (49) and surplus oil removed by the blade is allowed to fall back towards the trough. In order to promote enhanced distribution of oil along the length of the trough a series of ramps (51a, 51b, 51c) in saw-tooth configuration is provided in or adjacent a side wall of the trough beneath the blade (49) to receive the oil removed from the metering roller before it is returned to the base (44) of the trough. The base of the trough may slope in the opposite direction to the ramps to establish continuous circulation for the oil.







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