Patent ID: 9648187
Date: 2017-05-09
CPC Classifications: B65H,G06K,H04N

Claim:
1. A sheet feed apparatus comprising: a sheet housing section configured to house sheets; a guide configured to be arranged at a position corresponding to the size of the sheet housed in the sheet housing section, the guide comprising a first guide which moves inside the sheet housing section in a first direction, and a second guide which moves inside the sheet housing section in a second direction orthogonal to the first direction; an optical sensor having a varying optical sensor detection position that varies according to the size of the sheet while interlocking with the guide, the optical sensor being arranged on an interlocking support section which is interlocked with the first guide and the second guide; a plurality of markers that are spatially separated from each other, the plurality of markers having different image features corresponding to different sheet sizes, each of the plurality of markers being positioned at a respective fixed position associated with a respective sheet size, the respective fixed position being identical to the varying optical sensor detection position, the plurality of markers being arranged at the bottom surface of the sheet housing section; and a determination section configured to determine the size of the sheet housed in the sheet housing section based on a detection result of the optical sensor.