Canon BJC-4300 Series Service Manual download pdf (Page 18)

Part 1: Safety and Precautions

BJC-4300

2.3 Printer Precautions

2.3.1 Spur deformation prevention

Do not deform the tips of the spurs.

The spurs come into contact with the paper after printing. As the actual contact

surface is small, any ink adhering to the spurs is minute and wiped off by the spur

cleaners. Therefore any ink on the spurs is not enough to contaminate the paper as it

passes. However, if the spurs become deformed, their contact surface with the paper

increases, causing more ink to adhere to each spur. Since the spur cleaner is unable

to wipe off all the ink, a line of dotted ink may mask the printed paper.

Figure l-10 Spurs and Spur Cleaner

2.3.2 Static electricity damage prevention

The static charge that accumulates in your body from clothing can damage electrical

components. Therefore never touch the electrical contacts of the carriage ribbon cable

and

E3J

cartridge.

Figure l-11 Carriage Ribbon Cable’s Electrical Contacts

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Canon BJC-4300 Series Service Manual Page 18