NIP FORMING UNIT AND IMAGE FORMING APPARATUS

• Main Authors: SHIMADA HIROYUKI, SOMEYA YUKIMICHI, FURUICHI YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2023
• Subjects: CINEMATOGRAPHY; CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To optimize the interval between a fixing belt and a separating member with a simple configuration.SOLUTION: A nip forming unit has: a rotatable flexible endless belt (fixing belt 20); a nip forming member (heater 22) that is provided contactable with an inner peripheral surface of the endless belt; a pressure member (pressure roller 21) that is in pressure contact with the nip forming member with the endless belt therebetween to form a nip; and guide members (flanges 400) that guide both ends of the endless belt, wherein a body to be conveyed is conveyed through the nip. The nip forming unit includes a separating member (separating plate 310) that separates the body to be conveyed passing through the nip from the endless belt, and the separating member has a non-contact part (leading end 311) that is not in contact with the endless belt, and a contact part 313 that is in contact with the endless belt to maintain the interval between the non-contact part and the endless belt to a predetermined size.SELECTED DRAWING: Figure 9A 【課題】簡単な構成で定着ベルトと分離部材との間の間隔を最適化する。【解決手段】回転可能な可撓性の無端ベルト（定着ベルト２０）と、無端ベルトの内周面に接触可能に設けられたニップ形成部材（ヒータ２２）と、無端ベルトを介してニップ形成部材と圧接してニップを形成する加圧部材（加圧ローラ２１）と、無端ベルトの両端部をガイドするガイド部材（フランジ４００）とを有し、被搬送体がニップを通過して搬送されるニップ形成ユニットにおいて、ニップを通過した被搬送体を無端ベルトから分離させる分離部材（分離板３１０）を備え、当該分離部材は、無端ベルトに接触しない非接触部（先端部３１１）と、無端ベルトに接触することにより非接触部と無端ベルトとの間隔を所定の大きさに保持する接触部３１３とを有することを特徴とする。【選択図】図９Ａ