Patent ID: 11932032
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A printing apparatus comprising:
a printing section that performs printing on a medium containing calcium carbonate;
a transport section including a plurality of transport rollers that rotationally drive a transport belt that forms at least a portion of a transport path on which the medium is transported;
a voltage supply section including a power supply device that supplies a charging voltage to a charging roller for charging the transport belt;
a detection section including a detection circuit that detects whether or not charging abnormality occurs in the transport belt; and
a determination section that determines a cause of the charging abnormality based on a detection result of the detection section,
wherein the determination section
determines that the cause of the charging abnormality is abnormality of the transport belt, when a movement period for which the transport belt moves by a predetermined amount includes a period for which the detection section detects the charging abnormality and a period for which the detection section does not detect the charging abnormality, and
determines that the cause of the charging abnormality is abnormality of the voltage supply section, when the movement period includes the period for which the detection section detects the charging abnormality and does not include the period for which the detection section does not detect the charging abnormality.