Patent ID: 9122220
Filing Date: 2015-09-01
Classification: G03G

Abstract:
1. A printing apparatus comprising: a printing device that prints a toner image on a print medium; a conveyor that conveys the print medium from an upstream side of a conveyance path to a downstream side thereof; a fixing device arranged in the conveyance path to fix the toner image printed on the print medium by the printing device; a sensor arranged on a further upstream side than the fixing device in the conveyance path to detect a mark printed on the print medium; and a controller that, upon receipt of a printing suspension instruction during printing on the print medium by the printing device, causes the conveyor to stop the conveyance of the print medium from the upstream side to the downstream side after printing the mark on the print medium, causes the conveyor to convey the print medium from the downstream side to the upstream side, then to stop the conveyance of the print medium in response to the sensor detecting the mark printed on the print medium, and upon receipt of a printing restart instruction, causes the conveyor to convey the print medium from a returned position where the print medium is stopped to the downstream side and controls a timing of a printing based on a detection of the mark by the sensor; wherein the printing device comprises a transfer belt that conveys a toner image subjected to a primary transfer and a secondary transferring device that transfers the toner image conveyed by the transfer belt on the print medium; wherein when a distance from a charging position of an image forming color of a first toner image that is to be subjected to the primary transfer to a position of a secondary transfer by the secondary transferring device through a position of the primary transfer is set as X and a distance of a conveyance path for the print medium from the sensor detecting the mark to the secondary transfer position is set as Y, Y≧X is satisfied.