(19)
(11) EP 2 574 988 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.01.2017 Bulletin 2017/04

(43) Date of publication A2:
03.04.2013 Bulletin 2013/14

(21) Application number: 12182500.4

(22) Date of filing: 31.08.2012
(51) International Patent Classification (IPC): 
G03G 15/16(2006.01)
 G03G 15/00(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: 28.09.2011 JP 2011212692

(71) Applicant: Ricoh Company, Ltd.
Tokyo 143-8555 (JP)

(72) Inventor:
  • Yoshida, Ken
    Tokyo 143-8555 (JP)

(74) Representative: Schwabe - Sandmair - Marx 
Patentanwälte Rechtsanwalt Partnerschaft mbB Joseph-Wild-Straße 20
81829 München
81829 München (DE)

   


(54) Image forming apparatus with mechanism capable of moving transfer device with respect to toner image carrier


(57) An image forming apparatus (100) includes a transfer device separator (70; 170; 270) that moves a transfer device (22) between a contact position where the transfer device (22) contacts a toner image carrier (10) and a first isolation position where the transfer device (22) is isolated from the toner image carrier (10) with a first interval (D1) therebetween. The transfer device (22) is at the contact position as first to third toner images (T1, T2, T3) and a blank section (S2) between the first toner image (T1) and the second toner image (T2) carried by the toner image carrier (10) pass through a transfer region (N) and at the first isolation position as a toner patch section (S1) between the first toner image (T1) and the second toner image (T2) carried by the toner image carrier (10) passes through the transfer region (N).







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