Canon BJC-55 Service Bulletin

Also see for BJC-55 Series: Service manual User manual Start here User manual Specification

3.1.1 Mechanical system configurationa) Ink/BJ cartridgeThe black BJ cartridge (BC-10) has a 360-dpi resolution and 128 nozzles, and thecolor BJ cartridge (BC-11e) has a 360-dpi resolution, and 64 black nozzles, 24yellow, 24 magenta, and 24 cyan nozzles. You can print in either black or colorsimply by replacing the BJ cartridge.The ink cartridge (BCI-10) for the BC-10 and ink cartridges (BCI-11Bk, BCI-11color)for the BC-11e can be replaced respectively.b) Purge sectionThe purge section has a function to maintain the high printing quality of the BJcartridge bubble jet nozzles.The purge section consists of the pump section and wiper section.The pump section sucks ink within the BJ cartridge so that the nozzles are smoothlyfilled with ink for next printing. The wiper section wipes the head-face of the BJcartridge.The purge section is driven by the paper feed motor and carriage motor.c) Paper feed sectionPaper must be fed manually, one sheet at a time.The built in manual paper feeder can take cut sheets up to Legal size.When a cut sheet is inserted into the manual paper feeder unit and detected by thepaper end sensor, the paper feed roller and pinch rollers which are driven by thepaper feed motor, will grab the sheet and feed it partially under the paper feed roller.Pressing theRESUME button will bring the paper to the print start position.Since the paper feed unit of the printer does not have a manual-paper feed knob, allpaper-feeding operations are carried out with theRESUME button.d) Carriage sectionThe carriage that holds the BJ cartridge is moved horizontally by the carriage motorand the drive belt. The position of carriage is detected by the home-position sensor,which is located on the right side of printer. The printing signals sent from thecontrol board are transferred to the BJ cartridge on the carriage through the ribboncable.The wiping hooks on the carriage move the latch lever and wiper lever to startwiping.Part 4: Technical Reference BJC-504-20