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    • 44. 发明公开
    • SECONDARY TRANSFER DEVICE
    • EP3736636A1
    • 2020-11-11
    • EP20172217.0
    • 2020-04-29
    • KONICA MINOLTA, INC.
    • UI, HiroyukiTANAKA, Kenichi
    • G03G15/16
    • Provided is a secondary transfer device (30) capable of reducing the size while having a function of temporarily reducing a nip pressure when the leading and trailing ends of a sheet pass through a transfer nip.
      The secondary transfer device (30) includes a pressure-releasing portion (50) that displaces a secondary transfer roller (41) to a pressing position where an intermediate transfer belt (21) is interposed in a gap with respect to an opposite roller (28) and to a separation position separated from an intermediate transfer belt (21), a first drive (52) for driving, a high-speed depressurization portion (70) for temporarily reducing a nip pressure by the secondary transfer roller at the pressing position when the leading and trailing ends of the sheet pass, and a second drive (72) for driving. The cams (54) and (74) and the drives (52) and (72) are disposed below the intermediate transfer belt (21) such that the projected images when these components are projected in the axial direction of the secondary transfer roller overlap.