# US 2018/0024490 A1 · Paper output tray and image forming apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024490 A1 - Document ID: US20180024490A1 - Status: Published application - Kind: A1 - Application number: 15/652,529 - Filed: 2017-07-18 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Masaaki Takeuchi; Akinori Yokota; Yuko Harada - Web page: https://patentgrep.com/patent/US20180024490A1 ## CPC - B65H 31/20: adjustable for different article sizes - B65H 31/02: with stationary end support against which pile accumulates - G03G 15/6552: {Means for discharging uncollated sheet copy material, e.g. discharging rollers, exit trays} - B65H 2301/4212: of articles substantially horizontal - B65H 2402/45: Doors - B65H 2405/11151: with surface inclined upwardly in transport direction - B65H 2405/11164: Rear portion extensible in parallel to transport direction - B65H 2405/111646: involving extension members pivotable around an axis parallel to bottom surface and perpendicular to transport direction - B65H 2405/324: between operative position and non operative position - B65H 2511/11: Length - B65H 2511/21: Angle - B65H 2601/255: Jam - B65H 2601/321: Access - B65H 2601/324: Removability or inter-changeability of machine parts, e.g. for maintenance - B65H 2801/06: Office-type machines, e.g. photocopiers - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract A paper output tray includes: a tray main body where sheets discharged from an apparatus main body are stacked; a first extension tray which is to be housed in the tray main body on a lower surface side thereof so as to be pullable forward from a front end of the tray main body; and a second extension tray which is rotatably supported by the first extension tray and is expandable from a closed state, in which the second extension tray is folded on the upper surface of the first extension tray, to an open state in which the second extension tray extends forward of the first extension tray. The first extension tray has a support portion extending downward from the upper surface where the sheets are stacked, and the second extension tray is rotatably supported by the support portion. ## Claims ### Claim 1 A paper output tray holding sheets, which are discharged, the paper output tray comprising: a tray main body; a first extension tray which is to be housed on a lower surface side opposite to an upper surface, which is a sheet holding surface of the tray main body, the first extension tray being pullable out from the tray main body in a sheet discharge direction; and a second extension tray which is rotatably supported by the first extension tray and which is rotatable to be in a closed state in which the second extension tray is folded with respect to the first extension tray and an open state in which the second extension tray is open with respect to the first extension tray so that a sheet holding region is wider than that in the closed state, wherein when the second extension tray is in the closed state, the first extension tray can be housed in the tray main body on a lower surface side thereof, and wherein the first extension tray has a support portion extending downward from a virtual surface obtained by extending the upper surface, and the second extension tray is rotatably supported by the support portion. ### Claim 2 (depends on 1) The paper output tray according to claim 1, wherein in a state in which the first extension tray is housed in the tray main body and the second extension tray is folded on the upper surface side of the tray main body, a plurality of push-out portions against which abuts a leading end of a sheet to be discharged to the tray main body is provided at the second extension tray and an angle θ1 formed by a first push-out portion located at a position far from a rotation center line of the second extension tray, among two adjacent push-out portions of at least one set, and the sheet holding surface of the second extension tray is set to be larger than an angle θ2 formed by a second push-out portion located at a position close to the rotation center line of the second extension tray and the sheet holding surface of the second extension tray. ### Claim 3 (depends on 1) The paper output tray according to claim 1, wherein a guide portion with which a guided portion of the first extension tray slidably engages is provided on a lower surface of the tray main body; an engaging convex portion and an engaging concave portion which are engageable with each other are provided at a guided portion of the first extension tray and the guiding portion of the tray main body respectively; and in a state in which the first extension tray is housed in the tray main body and the second extension tray is folded on the upper surface side of the tray main body, the engaging convex portion and the engaging concave portion are set to a positional relationship where the engaging convex portion and the engaging concave portion are not engaged with each other. ### Claim 4 (depends on 1) The paper output tray according to claim 1, wherein the tray main body is provided with an insertion port for housing the first extension tray and also provided with a light shielding sheet for shielding a gap between an edge of the insertion port and the first extension tray. ### Claim 5 (depends on 1) The paper output tray according to claim 1, wherein the support portion of the first extension tray which rotatably supports the second extension tray is provided with a regulation surface orthogonal to a rotation center line of the second extension tray in the vicinity of the rotation center line; in the second extension tray, a first abutment surface and a second abutment surface, which face the regulation surface, are provided so as to have different phases in a circumferential direction around the rotation center; and in the open state of the extension tray, the position of the first abutment surface in a direction parallel to the rotation center line is regulated by the regulation surface, and in the closed state of the second extension tray, the position of the second abutment surface in a direction parallel to the rotation center line is regulated by the regulation surface. ### Claim 6 (depends on 5) The paper output tray according to claim 5, wherein the tray main body is provided with a protruding portion for regulation; the second extension tray is provided with a third abutment surface which faces the protruding portion for regulation via a predetermined gap in a direction parallel to the rotation center line in a housing state in which the first extension tray is housed in the tray main body, with the second extension tray being in the closed state; and in the housing state, the position of the second extension tray with respect to the tray main body in the direction parallel to the rotation center line is regulated by the third abutment surface and the protruding portion for regulation. ### Claim 7 (depends on 1) The paper output tray according to claim 1, wherein in the open state of the second extension tray, the rotation support surface provided on the second extension tray abuts against a distal end portion of the first extension tray. ### Claim 8 (depends on 1) The paper output tray according to claim 1, wherein a front receiving portion protruding so as to face a front end portion of the tray main body is provided at a front end of the second extension tray in a closed state with respect to the first extension tray; and when the first extension tray is housed, the front receiving portion of the second extension tray abuts against the front end portion of the tray main body, thereby positioning the housing position of the first extension tray. ### Claim 9 (depends on 1) An image forming apparatus comprising: an apparatus main body; and the paper output tray according to claim 1, which is provided at the apparatus main body. ### Claim 10 (depends on 9) The image forming apparatus according to claim 9, wherein the paper output tray also functions as a door for opening and closing an opening portion provided in an upper portion of the apparatus main body.