Canon bjc-6000 서비스 매뉴얼

Part 4: Technical Reference

BJC-6000

This printer has the following sensors detect the printer's status.

This photointerruptor-type sensor detects the chassis' home position edge and
capping position edge to find the carriage's position. When the carriage finds the
capping position edge, the printer confirms capping and locks the carriage.  The
carriage uses the position detected by the home position edge as the reference to
determine its home position.

This photointerruptor-type sensor uses its flag to check for the end of the paper
passed through the paper feed unit to determine if there is paper.  If there is no paper,
the paper sensor arm closes the sensor; if there is paper, it opens indicating that
there is paper.

Consists of a red LED and photosensor, and sees the reflection density of the printing
patterns, each printed slightly displaced from one another vertically and horizontally
for each printing mode.  The voltage varying with the reflection density is fed into the
MPU as an analog input which is converted into a digital value by the built-in A/D
converter. Based on the calculated compensation value, the printer performs optimum
printing position correction for both heads and for bi-directional printing.  Be careful
not to open the front cover during measurement, as external light may make accurate
measurement impossible.  For more on automatic printing position compensation,
refer to 

Part 4: 2.3 Automatic Printing Position Alignment Function (page 4-15)

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Internal Temperature
Sensor

Ink Sensor

Cover Sensor

Paper End Sensor

Pump Sensor

Home Position Sensor

Print Position Sensor