Canon QY8-1360-000 Structure of printers mechanical system, 4-14, Part 4 Technical Reference

Part 4: Technical Reference BJC-7100

3.1.1 Structure of printer's mechanical system

1) BJ Cartridge/Ink Tank

The printer is shipped with the BC-60 BJ cartridge, which contains black ink and ink optimizer, and the BC-62e Photo BJ cartridge, which contains three color inks and three photo inks. The BC-61 color BJ cartridge which contains three color inks may be shipped instead of the BC-62e Photo.

The BC-60 has a unified print head and ink tank, while the BC-62e Photo has separate head and ink tanks that can be replaced.

The user can decide whether to use the combination of BC-60 and BC-62e Photo or BC-60 and BC-61 according to the type of data being printed.

2) Purge Unit

To ensure high-quality printing, the purge unit, which is driven by the paper feed motor, caps and wipes the face of the BJ cartridge print head to make sure that the ink can be ejected cleanly from the nozzles when printing.

Functionally, the purge unit consists of a pump and wiper.

The pump draws ink from the BJ cartridge and removes the ink from inside the cap. The wiper wipes the face of the head. When not printing, the nozzles of the BJ cartridge are capped to protect them.

3) Carriage

The carriage travels horizontally across the print paper driven via the carriage belt by the carriage motor. Print signals output by the logic board are sent via the carriage ribbon cable to the two BJ cartridges mounted on the carriage.

The wiping hook on the bottom of the carriage trips the latch lever and wiper lever so that the ink optimizer head is wiped.

By controlling the position of the slide lock lever of the purge unit, the carriage switches between paper feed/sheet feed drive and purge unit drive.

4) Paper Feed/Sheet Feeder

The built-in sheet feeder is driven by the paper feed motor and transports the print paper to the paper feeder.

The paper feed, which is driven by the paper feed motor, rotates the feed rollers so that the print paper is transported vertically.

5) Paper Output

The paper output unit prevents smearing and dirtying by ink by providing a time interval up to when the paper being printed is stacked on top of the already printed paper on the output tray. This unit feeds printed print paper to the output tray as each sheet is printed.

Print paper is fed to the output tray by the power of the paper feed roller. This power is transferred via the paper feed roller gear to the paper output roller inside the paper output unit to rotate the paper output roller.

Paper end guides are located at both ends of the paper passage path in the paper output unit. When the paper is being output, both ends of the print paper are lifted up to slightly warp the paper, and the leading edge of the print paper being printed is made to hang down so that it does not contact the already printed paper on the output tray.

6) Manual Feed Slot

Paper can be fed into the printer manually from the manual feed slot on the back. Paper fed manually into the printer takes precedence over any print paper already in the sheet feeder.

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