# US 2021/0240113 A1 · Recording material cooling device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240113 A1 - Document ID: US20210240113A1 - Status: Published application - Kind: A1 - Application number: 17/160,062 - Filed: 2021-01-27 - Published: 2021-08-05 - Earliest claimed: 2020-01-30 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Kenichi TANAKA; Keita KONDO; Yuki INOUE; Shingo KATANO - Web page: https://patentgrep.com/patent/US20210240113A1 ## CPC - G03G 15/2021: {Plurality of separate fixing and/or cooling areas or units, two step fixing} - G03G 15/2017: {Structural details of the fixing unit in general, e.g. cooling means, heat shielding means (G03G15/2053 takes precedence)} - G03G 15/2025: {with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid} - G03G 15/6573: {Feeding path after the fixing point and up to the discharge tray or the finisher, e.g. special treatment of copy material to compensate for effects from the fixing} - G03G 21/206: {Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone} - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A recording material cooling device includes a belt; a cooling member, a first roller, a second roller, an urging member for urging a bearing portion so that the second roller moves toward an inner peripheral surface of the belt, a holding member, for holding the urging member, and a moving member for moving the holding member between a first position for enabling rotation of the belt by stretching said belt by the first roller and the second roller and a second position for facilitating exchange of the belt. ## Claims ### Claim 1 A recording material cooling device for cooling a recording material passed through a fixing device for fixing a toner image on the recording material by heating, said recording material cooling device comprising: a belt; a cooling member configured to cool said belt in contact with an inner peripheral surface of said belt; a first roller provided on the inner peripheral surface of said belt; a second roller rotatably supported by a bearing portion and configured to stretch said belt in cooperation with said first roller; an urging member configured to urge said bearing portion so that said second roller moves toward the inner peripheral surface of said belt; a holding member configured to hold said urging member; and a moving member configured to move said holding member between a first position for enabling rotation of said belt by stretching said belt by said first roller and said second roller and a second position for facilitating exchange of said belt. ### Claim 2 (depends on 1) A recording material cooling device according to claim 1, further comprising a cleaning member capable of cleaning said belt in contact with the inner peripheral surface of said belt, wherein said cleaning member contacts the inner peripheral surface of said belt when said second roller is moved to the first position and does not contact the inner peripheral surface of the belt when the second roller is moved to the second position. ### Claim 3 (depends on 1) A recording material cooling device according to claim 1, further comprising a steering mechanism configured to move said belt in a rotational axis direction of said second roller by swinging said second roller relative to said first roller, wherein said holding member includes: a roller holder configured to hold said second roller so as to be rotatable; and a steering operation shaft provided in said roller holder and configured to be operated by said steering mechanism, and wherein said steering mechanism moves said steering operation shaft in a direction perpendicular to the rotational axis direction of said second roller and a movement direction of said second roller between the first position and the second position by said moving mechanism. ### Claim 4 (depends on 1) A recording material cooling device according to claim 1, further comprising: a feeding member contacting an outer peripheral surface of said belt and configured to form a nip in which the recording material on which the toner image is formed is fed; and a contact-and-separation mechanism capable of changing a state of said belt and said feeding member between a state in which said belt and said feeding member forms the nip and a state in which said belt and said feeding member are in separation from each other, wherein said moving member is capable of moving said holding member in the surface in which said belt and said feeding member are in separation from each other. ### Claim 5 (depends on 4) A recording material cooling device according to claim 4, wherein said feeding member is an endless belt. ### Claim 6 (depends on 1) A recording material cooling device according to claim 1, wherein said cooling device is a heat sink including a heat receiving portion configured to receive heat in contact with said belt and a heat dissipation portion configured to dissipate the heat received by said heat receiving portion. ### Claim 7 (depends on 1) A recording material cooling device according to claim 1, wherein a distance of said second roller from said first roller is shorter when said holding member is in the first position than when said holding member is in the second position. ### Claim 8 (depends on 1) A recording material cooling device according to claim 1, further comprising other rollers configured to stretch said belt in cooperation with said first roller and said second roller, wherein when said holding member is in the second position, a length of a phantom line connecting a rotation center of said first roller, a rotation center of said second belt and rotation centers of said other rollers is shorter than a peripheral length of said belt. ### Claim 9 (depends on 1) An image forming apparatus comprising: an image forming unit configured to form a toner image on a recording material; a fixing device configured to fix the toner image, formed by said image forming unit, by heating; and a recording material cooling device according to claim 1, which is provided on a side downstream of said fixing device with respect to a recording material feeding direction and which is configured to cool the recording material passed through said fixing device.