Copycat2
09-08-2008, 04:53 AM
Hello everyone,
I'm getting light patches on all duplex copies on our Minolta Di620 B&W engine. This problem is especially prevalent on letter-sized (8.5"x11") double-sided B&W copies. It looks as though the paper passing through the imaging section of the B&W print engine is not making full contact with the drum. As all fuser parts and rollers have been replaced, is it possible that this could be either a vacuum issue or a transport problem? I also thought that the copy paper could be the culprit but I've opened another box and the same problem persisted. The light patched areas are on one side of the paper and seem to originate in the same general area of the copies. Both fuser rollers (upper and lower) have just been replaced with OEM parts and the Web Pressure Roller and Web Roller have also just been replaced. Would increasing the pressure of the two Roller Pressure Springs on the Lower Fusing Roller help alleviate the appearances of the light patches on the copies? I don't know what the proper factory pressure settings are for these springs. I'm afraid that if I torque down the two Roller Pressure Springs, I might damage the components in the fuser unit.
Thanks for your help everyone. I welcome your comments and advice on this one.
I'm getting light patches on all duplex copies on our Minolta Di620 B&W engine. This problem is especially prevalent on letter-sized (8.5"x11") double-sided B&W copies. It looks as though the paper passing through the imaging section of the B&W print engine is not making full contact with the drum. As all fuser parts and rollers have been replaced, is it possible that this could be either a vacuum issue or a transport problem? I also thought that the copy paper could be the culprit but I've opened another box and the same problem persisted. The light patched areas are on one side of the paper and seem to originate in the same general area of the copies. Both fuser rollers (upper and lower) have just been replaced with OEM parts and the Web Pressure Roller and Web Roller have also just been replaced. Would increasing the pressure of the two Roller Pressure Springs on the Lower Fusing Roller help alleviate the appearances of the light patches on the copies? I don't know what the proper factory pressure settings are for these springs. I'm afraid that if I torque down the two Roller Pressure Springs, I might damage the components in the fuser unit.
Thanks for your help everyone. I welcome your comments and advice on this one.