Chapter 1414-12F-14-714.2.1.4.6 Horizontal Line/Blurring at Intervals of 94 to 95 mm0007-7091iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The coefficient of friction on the surface of the photosensitive drum where the edge of the cleaning blade remains in contact tends to change, causing uneven rotationand thus blurring.This problem tends to occur during the initial period of use (less than 10K), when the coefficient of friction is relatively even, or when a halftone image is generatedafter leaving the machine alone for 1 to 2 days. This problem, on the other hand, tends to disappear when about 10 printouts are made.This problem can also occur when the drum unit is taken out of and put back in the machine, with the edge of the cleaning blade forcing itself against the surfaceof the photopositive drum and increasing the friction.Make about 10 copies of the Test Chart.F-14-814.2.1.4.7 White Lines in Sub Scanning Direction0007-7465iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The presence of foreign matter inside the developing assembly can make its way to the developing cylinder, preventing toner from being evenly deposited on thecylinder and, thus causing white lines.Replace the Developing Assembly
