The secondary transfer outer belt and the outer belt tension roller
holder breakage caused by applied load
[Symptom]
Each of the following symptoms may occur in the secondary transfer outer belt assembly of the machines earlier than the following
countermeasure cut-in serial number in factory.
a) Secondary transfer outer belt breakage
Secondary transfer outer belt may be torn from the edge. [A]
b) The claw of secondary transfer outer belt tension roller holder breakage
When replacing the secondary transfer outer belt, the claw of secondary transfer outer belt tension roller holder may break [B].
[Cause]
a) Secondary transfer outer belt breakage
a-1) The factor due to the vibration of the back-up roller
At the first time of the production start, the machine was transported with the secondary transfer outer belt [2] set. Therefore, the
back-up roller [1] of the secondary transfer outer belt assembly repeatedly vibrated upward and downward and the force was
focused on the bent portion [a] of the secondary transfer outer belt [2] where it came in contact with the back-up roller [1], resulting
in the above symptom.
[Reference] The product manufactured on December 18, 2015 and later has been shipped without the secondary transfer outer
belt set and packed in a different package.
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