A processing system includes a processing apparatus, a feeding apparatus, an ejection apparatus, and circuitry. The processing apparatus includes a processing device to execute a process on each of objects including a first object and a second object. The feeding apparatus feeds the objects to the processing apparatus. The ejection apparatus ejects the objects sent from the processing apparatus. The ejection apparatus includes an ejection purge portion to receive the second object traveling in the ejection apparatus. The circuitry sets whether to permit ejection of the second object not jammed to the ejection purge portion in case of a jam of the first object in the processing system. The circuitry causes the second object to be ejected to the set ejection purge portion, in response to detection of the jam of the first object.

A printing system includes a discharging unit, a mounting unit, a post-process unit, a relay unit, and a control unit. The discharging unit discharges sheets. The mounting unit is provided to an apparatus body, and sheets are mounted on the mounting unit. The post-process unit performs a post-process on sheets. The relay unit is provided to the apparatus body, is configured to transport sheets to the post-process unit, and includes a lower path member. The lower path member is configured to be switched between a first state in which the lower path member serves as part of a relay path from the discharging unit to the post-process unit and a second state in which the lower path member opens the relay path. The control unit, when the lower path member is in the second state, makes sheets be discharged from the discharging unit to the mounting unit.

A printing system includes a discharging unit, a mounting unit, a post-process unit, a relay unit, and a control unit. The discharging unit discharges sheets. The mounting unit is provided to an apparatus body, and sheets are mounted on the mounting unit. The post-process unit performs a post-process on sheets. The relay unit is provided to the apparatus body, is configured to transport sheets to the post-process unit, and includes a lower path member. The lower path member is configured to be switched between a first state in which the lower path member serves as part of a relay path from the discharging unit to the post-process unit and a second state in which the lower path member opens the relay path. The control unit, when the lower path member is in the second state, makes sheets be discharged from the discharging unit to the mounting unit.

A transport device includes a transport belt configured to alternately repeat a transport operation of transporting a medium and a non-transport operation of not transporting the medium, a detection mechanism configured to detect a movement amount of the transport belt in the transport operation, and a control section configured to determine a magnitude of tension of the transport belt based on a vibration state of the transport belt when the transport operation ends, the vibration state being detected by the detection mechanism.

A feeder includes a conveyance path, a conveyance roller that conveys a sheet along the conveyance path, a transmitter that emits a space propagating energy, a receiver that receives a reflected energy obtained by reflection of the space propagating energy, and an actuator mounted pivotably on a pivot shaft and including first and second legs extending in different directions from the pivot shaft. The first leg is disposed to extend to the conveyance path and abut against the sheet being conveyed along the conveyance path. The second leg has a reflective surface crossing a path of the space propagating energy. The actuator is pivoted by abutment of the sheet against the first leg. The reflective surface is formed so that the reflected energy obtained by the reflection of the space propagating energy on the reflective surface enters the receiver regardless of an angle of pivotal movement of the actuator.

A feeder includes a conveyance path, a conveyance roller that conveys a sheet along the conveyance path, a transmitter that emits a space propagating energy, a receiver that receives a reflected energy obtained by reflection of the space propagating energy, and an actuator mounted pivotably on a pivot shaft and including first and second legs extending in different directions from the pivot shaft. The first leg is disposed to extend to the conveyance path and abut against the sheet being conveyed along the conveyance path. The second leg has a reflective surface crossing a path of the space propagating energy. The actuator is pivoted by abutment of the sheet against the first leg. The reflective surface is formed so that the reflected energy obtained by the reflection of the space propagating energy on the reflective surface enters the receiver regardless of an angle of pivotal movement of the actuator.

A printing apparatus includes: a printing section; a print conveyor conveying a medium in the printing section; a constant-speed conveyor conveying the medium at a variable constant conveying speed in a circulation route for duplex printing; a registration roller pair against which the medium to be conveyed to the printing section is caused to abut; and a processor determining a conveyance schedule for the medium based on at least one of a first conveyance route length between a downstream end portion in a conveying direction of the print conveyor and an upstream end portion in the conveying direction of the constant-speed conveyor and a second conveyance route length between a downstream end portion in the conveying direction of the constant-speed conveyor and the registration roller pair, and a medium length in the conveying direction of the medium.

A printing apparatus includes: a printing section; a print conveyor conveying a medium in the printing section; a constant-speed conveyor conveying the medium at a variable constant conveying speed in a circulation route for duplex printing; a registration roller pair against which the medium to be conveyed to the printing section is caused to abut; and a processor determining a conveyance schedule for the medium based on at least one of a first conveyance route length between a downstream end portion in a conveying direction of the print conveyor and an upstream end portion in the conveying direction of the constant-speed conveyor and a second conveyance route length between a downstream end portion in the conveying direction of the constant-speed conveyor and the registration roller pair, and a medium length in the conveying direction of the medium.

A control unit obtains a captured image of a reference workpiece by a second image capturing unit after a droplet ejected from a droplet ejecting head lands toward a reference mark formed on an upper surface of the reference workpiece, detects a positional deviation amount of a position of the reference mark and a landing position of the droplet based on the captured image, and calculates the correction amounts of the relative positions of a workpiece table and a droplet ejecting head based on the positional deviation amount.

A control unit obtains a captured image of a reference workpiece by a second image capturing unit after a droplet ejected from a droplet ejecting head lands toward a reference mark formed on an upper surface of the reference workpiece, detects a positional deviation amount of a position of the reference mark and a landing position of the droplet based on the captured image, and calculates the correction amounts of the relative positions of a workpiece table and a droplet ejecting head based on the positional deviation amount.