Sheet Position Correction Using Variable Coefficients

The patent applies parameter changes by introducing correction coefficients that vary based on sheet position and conveyance conditions. The system divides the sheet into multiple regions (leading end, middle, trailing end) and applies different correction coefficients to each region, thereby compensating for speed variations and mechanical errors at different positions during conveyance.

The patent implements feedback by using the inline sensor to detect actual sheet positions, comparing them with target positions, and then applying correction coefficients to adjust subsequent conveyance control. This closed-loop feedback mechanism continuously compensates for detection errors caused by speed variations and mechanical inaccuracies.

The patent applies segmentation by dividing the sheet conveyance process into distinct regions (leading end, middle portion, trailing end) and assigning different correction coefficients to each region. This segmentation allows the system to handle different conveyance conditions in each region with appropriate correction values, improving overall positioning accuracy while managing complexity through structured regional division.

The patent implements local quality by applying different correction coefficients to different regions of the sheet based on their specific conveyance characteristics. The leading end, middle, and trailing end each receive tailored correction values appropriate to their local conveyance conditions, rather than using a uniform correction approach throughout the entire sheet.