Patent ID: 11900754
Assignee: FUJITSU FRONTECH LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  B | IPC B  G  H

Claim 0:
1. A correction method of a paper sheet handling apparatus, the method comprising:
correcting an output of an image sensor unit, from among image sensor units, based on correction information stored in a storage element of the image sensor unit that captures and discriminates a paper sheet, wherein
the correcting includes
a black correction indicating an offset correction performed during a non-lighting period of a light source of the image sensor unit, and
a white correction indicating an output correction of each of image capturing elements, which is performed by using a reference output correcting medium corresponding to the paper sheet, during a lighting period of the light source of the image sensor unit, and
a shading correction for making outputs of the image capturing elements even,
wherein
the shading correction is included in the white correction, as part of the white correction, and
when a maintenance or replacement is performed on the image sensor unit, the maintenance or replacement is performed in units of a pair of image sensor units of the image sensor units, on which the black correction and the white correction are performed on shipping.