Specifications

C-19
PagePro25
The printer has the function to detect whether the newly installed imaging cartridge is a new one or used one.
In the imaging cartridge, an internal circuit is incorporated as shown in the figure. A fuse is connected in parallel with a
resistor and it is not blown. Accordingly, by measuring the voltage across the resistor, the printer can know whether the
imaging cartridge is a new one or not.
When the printer is turned ON after a new imaging cartridge has been installed, the fuse is blown by the printer. Also,
when you close the right door after replacing the image cartridge while the printer is turned ON, the fuse is blown.
When the printer blows the fuse, the PC drum counter is cleared to enable detection of the image cartridge life. When
power is turned OFF, the counter value is stored in the EEPROM in the imaging cartridge. When power is turned ON, the
counter value is recall from the EEPROM from the imaging cartridge for continuing counting.
The right door is normally closed. It will be opened when the imaging cartridge is replaced or jammed paper is removed.
With the door closed, the projection of the right door presses the switch lever via the spring linked with the switch lever
and the switch is ON. When it is opened, the lever of the switch is set free so that the switch is OFF.
8 DETECTION OF A NEW IMAGING CARTRIDGE
9 RIGHT DOOR INTERLOCK SWITCH (S2)
R1
F4
Imaging cartridge
Internal circuit
Right Door
Projection
Spring
Right Door Interlock Switch (S2)