IMAGE CREATION PROCESS hp Color 9850mfp 5 .10 Transfer belt cleaning (Sub step 3) I OUTLINE A transfer belt that has completed the 2nd transfer has a residual amount of toner that is left from the transfer process. The process to remove toner is referred to as a transfer belt cleaning. A transfer belt cleaning is made by scraping toner adhered to the drum surface with the edge of a plate called a blade that is made of urethane rubber. [1] [3] [2] [1] Transfer belt [3] Cleaning blade [2] Residual toner 5 .11 2nd transfer roller L cleaning (Sub step 4) Residual toner on the transfer belt is in direct contact with the 2nd transfer roller L.
As a result, the 2nd transfer roller L may be coated with toner. So, the 2nd transfer roller U is applied with a positive and a negative high DC bias voltage alternately to move toner on the 2nd transfer roller L to the transfer belt side. The toner on the transfer belt that has been moved is cleaned by the transfer belt cleaning mentioned above. [1] [3] [2] [4] [5] [1] Transfer belt [4] DC bias (positive) applied [2] [5] DC bias (negative) applied 2nd transfer roller L [3] 2nd transfer roller U 1- 46