Chapter 55-19the sensor level).F-5-20The machine uses the following in reference to changes occurring in the sensor output as found in original sizeidentification processing 1 and original size identification processing 2:F-5-215.3.5 Dirt Sensor Control5.3.5.1 Outline 0006-5929iR2270 / iR2870 / iR3570 / iR4570The machine changes the original read point depending on the presence/absence of dust on the stream reading glassor the platen roller of the ADF, or it may execute image correction to prevent the dust from showing up in the output.These operations are carried out only when the ADF is in use and, in addition, is closed:-at the end of a job-between sheets (for each reading of a sheet)-at the start of a job (only when any of the following conditions is true)1st job after power-ondust detected at all points of detection at the end of the previous jobdust detection failed to end normally at the end of the previous job (e.g., ADF opened)Original sensor 3Original sensor 4Original sensor 2Original sensor 1Original (A4R)Change absentChange presentAB-ConfigurationA3A4B4B5A4RB5RNo originalOriginalsizeOriginalsensor 1Originalsensor 2Originalsensor 3Originalsensor 4Inch-Configuration11"X17"LTRLGLLTR-RNo originalOriginalsizeOriginalsensor 1Originalsensor 3Originalsensor 5:No original:change absent
