Bj Cartridge Aluminum Plate - Canon BJC 50 - Color Inkjet Printer Service Manual

Part 1: Safety and Precautions

1.3 BJ Cartridge Aluminum Plate

Do not touch the aluminum plate of the BJ cartridge. The aluminum plate heats up
during printing and becomes particularly hot during continuous high duty printing. It
also heats up if printing is operated after the ink in the cartridge has run out.
Danger ! High Temperature!
Figure 1-4 BJ Cartridge Aluminum Plate
This printer has the following functions to protect against the above
temperature rise. The temperature is detected by the head temperature
sensor in the BJ cartridge. (ex. approx. 70
1) During printing, if a temperature rise is detected to above a certain
temperature, in order to protect the printer, it will print unidirectionally
with a wait after each line until the BJ cartridge cools down. Also
ERROR indicator will blink and printing will slow down. If this
temperature continues for more than a certain period of time, the
beeper sounds 8 times, the ERROR indicator and POWER indicator
blink to indicate a head temperature error.
Since the same type of temperature rise also occurs if printing is operated
after the ink in the cartridge has run out, these protective functions are
triggered. Therefore, the criterion for replacing the BJ cartridge or the ink
cartridge is non-fire nozzles or diminished dot size during printing or the
triggering of these protective functions.
When printing is stopped by a head temperature error, handle the printer
as explained in Part 5: 5. TROUBLESHOOTING (page 5-5).
c at 100% Duty printing)
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BJC-50