Patent ID: 9628667
Date: 2017-04-18
CPC Classifications: H04N

Claim:
1. A scanning apparatus, comprising: a reference member arranged on a conveying passage through which an original sheet subject to scan is conveyed; a scanning device configured to scan an image on the original sheet when the original sheet passes the reference member, the scanning device including a light source and a light receiver configured receive reflected light which is light emitted by the light source and reflected by the original sheet; a convertor configured to covert analog signals output by the scanning device into digital data for respective pixels in one line of the scanning device; a compensator configured to calculate compensation data based on the digital data and black reference data, the compensation data being data removing variation of the black reference data of respective pixels from the digital data; a setting device configured to set a light amount setting value used to adjust a light amount of the light emitted by the light source; and a controller, wherein the controller is configured to execute: