The paper appears completely black when printing
1. The corona wire is broken If the corona wire is broken, replace the corona wire. 2. Missing charging roller or poor assembly If the printing is completely black, it may be due to missing charging roller or improper assembly. This is usually caused by poor installation of the toner cartridge after manual removal. At this time, it is necessary to check whether there is a problem with the charging roller, and reassemble the charging roller. 3. Poor contact of the conductive support of the charging roller or the conductive steel sheet If the conductive support of the charging roller or the conductive steel sheet is in poor contact, reassemble […]