This is a photo-interrupter-type sensor. The lift motor is driven by a predetermined number of pulses received after blocking of the sensor light by the flag, thus

controlling the heights of the head and platen.

Environmental temperature sensor

The environmental temperature sensor installed on the carriage PCB detects the temperature around the carriage.

The resistance of the thermistor that changes with the temperature inside the printer is reported to the main controller via the carriage PCB.

The environmental temperature is used to calibrate the head sensor and to detect abnormal head temperatures.

Head temperature sensor

The diode-type head temperature sensors installed at the top and bottom of the printhead nozzle unit are used to detect the head temperature.

The diode voltage that changes with the nozzle unit temperature is reported to the main controller via the carriage PCB.

The detected head temperature is used to control the head operation and to detect abnormal head temperatures.

Printhead contact detection

The printhead contact status is detected by testing the electrical conductivity.

It is detected according to the voltage changes at the two terminals of the contact faces, power supply terminals, and GND terminal.

2.5.5 Paper path system

iPF6100 / iPF6200 / iPF6000S

Cutter HP sensor

Cutter right position

sensor

Paper detection sensor

This is a photo-interrupter-type sensor. When paper is supplied from the paper tray, or roll feed unit, the sensor light is blocked by the sensor arm, thus detecting

paper.

Spur cam sensor

This is a photo-interrupter-type sensor.

When the sensor light is shielded by the rotation of the spur motor, the printer detects that the spur unit is at the upper-limit position.

When the sensor light is unshielded by the rotation of the spur motor, the printer detects that the spur unit is at the bottom position.

The spur height is controlled by driving the spur motor with a predetermined number of pulses.

Cutter HP sensor

This is a photo-interrupter-type sensor. This sensor detects that the cutter is at the home position (left end).

Cutter right position sensor

This is a photo-interrupter-type sensor. This sensor detects that the cutter is at the right end.

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Paper detection sensor