US 12,466,677 B2
Document conveying device
Koji Fujii, Osaka (JP); Takuro Murata, Osaka (JP); Masahiro Nakao, Osaka (JP); Taro Kurahashi, Osaka (JP); Shota Urase, Osaka (JP); Yoshitaka Tokoro, Osaka (JP); Takafumi Nakagawa, Osaka (JP); and Hirofumi Hagihara, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Appl. No. 18/553,420
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
PCT Filed Jun. 22, 2022, PCT No. PCT/JP2022/024830
§ 371(c)(1), (2) Date Sep. 29, 2023,
PCT Pub. No. WO2023/276806, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 2021-106730 (JP), filed on Jun. 28, 2021; and application No. 2021-106731 (JP), filed on Jun. 28, 2021.
Prior Publication US 2024/0182254 A1, Jun. 6, 2024
Int. Cl. B65H 7/04 (2006.01); B65H 1/08 (2006.01)
CPC B65H 7/04 (2013.01) [B65H 1/08 (2013.01); B65H 2801/06 (2013.01); B65H 2801/39 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A document conveying device comprising:
a sheet feeding tray on which a document is placed;
a discharge tray provided below the sheet feeding tray;
a feeding roller which feeds the document one by one from the sheet feeding tray;
a conveying mechanism which conveys the document from the sheet feeding tray to the discharge tray via a reading position;
a lifting mechanism which lifts and lowers the sheet feeding tray;
a discharge tray document sensor which detects the document on the discharge tray;
a sheet feeding tray lower limit sensor which detects the sheet feeding tray at a lower limit position of the sheet feeding tray; and
a control part which controls the lifting mechanism such that an upper surface of the document placed on the sheet feeding tray is pressed against the feeding roller when the conveying mechanism conveys the document, wherein
the control part controls the lifting mechanism to lower the sheet feeding tray by a larger amount in a case where the document is not detected by the discharge tray document sensor when power is turned on than a case where the document is detected by the discharge tray document sensor, and
the control part controls the lifting mechanism to lower the sheet feeding tray until the sheet feeding tray is detected by the sheet feeding tray lower limit sensor in the case where the document is not detected by the discharge tray document sensor when the power is tuned on.