(19)
(11) EP 2 645 179 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.10.2017 Bulletin 2017/42

(43) Date of publication A2:
02.10.2013 Bulletin 2013/40

(21) Application number: 13160795.4

(22) Date of filing: 25.03.2013
(51) International Patent Classification (IPC): 
G03G 15/20(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 01.04.2012 JP 2012083432

(71) Applicant: Konica Minolta Business Technologies, Inc.
Tokyo 100-7014 (JP)

(72) Inventors:
  • Hayashi, Hideaki
    Tokyo 100-7014 (JP)
  • Yoneda, Satoru
    Tokyo 100-7014 (JP)
  • Saito, Masashi
    Tokyo 100-7014 (JP)
  • Morita, Osamu
    Tokyo 100-7014 (JP)
  • Hadano, Hideki
    Tokyo 100-7014 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) Image forming apparatus


(57) An image forming apparatus (10) employing a fixing device (4) having a heating roller (41) with a plurality of heaters (h1, h2) embedded therein and a pressing roller (42) opposed to the heating roller (41). During a printing operation, only a first heater (h1), which generates a greater amount of heat from its center portion than from its end portions, is controlled to be turned on and off. In a standby state, a second heater (h2), which generates a greater amount of heat from its end portions than the amount of heat generated from the end portions of the first heater (h1), is controlled to be turned on and off.







Search report









Search report