US 11,835,892 B2
Image forming apparatus including heater with movable shield
Hideki Kuge, Ebina (JP); Norio Ogawahara, Ebina (JP); Kouichi Kimura, Ebina (JP); and Mitsutoshi Hongo, Ebina (JP)
Assigned to FUJIFILM BUSINESS INNOVATION CORP., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Nov. 18, 2021, as Appl. No. 17/529,867.
Application 17/529,867 is a continuation of application No. PCT/JP2020/019871, filed on May 20, 2020.
Claims priority of application No. 2019-123948 (JP), filed on Jul. 2, 2019.
Prior Publication US 2022/0075298 A1, Mar. 10, 2022
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/2017 (2013.01) [G03G 15/2007 (2013.01); G03G 15/2021 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An image forming apparatus, comprising:
an image former that forms a toner image on a medium;
a heater that is provided on a downstream side in a transport path from the image former and that is configured to heat the medium being transported in a non-contact manner;
a fixer that is provided on a downstream side in the transport path from the heater and fixes the toner image on the medium;
a shield to which force is applied so as to form a closed state in which the heater is shielded; and
an open state former configured to receive power to drive the shield so as to form an open state in which the heater is opened, and maintain the open state while the power is being supplied, wherein
the closed state is maintained while the power is off,
the shield includes a shutter movable along the heater,
the image forming apparatus further comprises a changing roll configured to move the shutter to the open state in a separating direction away from the transport path, and
the open state former includes a folding roll that folds the shutter, that is moving in the separating direction, in an approaching direction approaching the transport path, a fixing bar that fixes an end portion side of the shutter at a position closer than the folding roll to the transport path, and a rectangular frame shaped member to which the folding roll is attached and which moves the folding roll in the separating direction.