US 11,891,265 B2
Detecting and processing multi feeding
Sungchang Hur, Pangyo (KR); Uichoon Lee, Pangyo (KR); Myung Soo Jeong, Suwon (KR); Jae Wuk Lee, Suwon (KR); and Wootan Son, Suwon (KR)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/414,904
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jun. 11, 2020, PCT No. PCT/US2020/037212
§ 371(c)(1), (2) Date Jun. 16, 2021,
PCT Pub. No. WO2020/263581, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 10-2019-0078311 (KR), filed on Jun. 28, 2019.
Prior Publication US 2022/0135356 A1, May 5, 2022
Int. Cl. B65H 7/00 (2006.01); B65H 7/12 (2006.01); B65H 7/18 (2006.01); B65H 7/20 (2006.01); G03G 15/00 (2006.01); B65H 3/50 (2006.01)
CPC B65H 7/125 (2013.01) [B65H 7/18 (2013.01); B65H 7/20 (2013.01); G03G 15/50 (2013.01); B65H 3/50 (2013.01)] 16 Claims
OG exemplary drawing
 
11. An image forming apparatus comprising:
an image forming portion;
a print medium transporting device to pick up a print medium loaded in a loading portion and transport a picked-up print medium;
a print medium alignment portion to align a leading end of the transported print medium and supply the aligned print medium to the image forming portion;
a first sensor to sense the print medium that passes through a feed roller of the print medium transporting device;
a processor; and
a non-transitory computer readable medium storing computer-executable instructions that when executed by the processor cause the processor to:
based on a measured value with respect to the print medium sensed by the first sensor and a multi-feeding determination reference value corresponding to a sheet of the print medium, detect multi-feeding of the print medium and process the detected multi-feeding by controlling the print medium transporting device and the print medium alignment portion to, based on a predetermined gap distance, control transport of picked-up print medium by controlling a distance of a gap between a first sheet of picked-up print medium and a second sheet of picked-up print medium,
wherein the controlled distance between the first sheet of print medium and the second sheet of print medium corresponds to a distance between the first sensor and a second sensor.