Canon LBP7200Cdn - Motor Control; Safety; Main Controller; Outline

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Chapter 2

2-18

T-2-6

2.8.1.2 Motor control

0021-4103

The printer has four motors. The motors are used for the media feeding and image formation.

T-2-7

2.8.1.3 Safety

0021-4104

The printer detects the door open and close status by monitoring the door open detection sensors.

The DC controller stops driving the motors and solenoids if the sensor detects a door open.

2.8.2 Main Controller

2.8.2.1 Outline

0021-4105

The main controller receives print information from external devices (e.g., host computer) by way of interface cables. The information contains a CAPT command

used to communicate printer status and printer-specific characteristics and dot data, which is the result of conversion of print data by the host computer.

The data is sent to the DC controller circuit for control of laser diode activation.

If properly connected with a bi-directional interface, an external device may be used to check the printer status.

When printing is executed in a Microsoft Windows or Macintosh environment, CAPT (Canon Advanced Printing Technology) serves to reduce processing speed

and enhance the ease of operation to provide a user-friendly printing environment. To that end, CPU is designed for the following:

- The print data from the application is turned into dot data and sent to the printer without conversion into the printer's page description language (PDL).

- The printing environment may be checked and set on the host computer display by responding to dialog boxes.

- The printer status is indicated on the host computer screen: print end time, print paper movement, error status.

Symbol for component Name

Motor

M1 Drum motor

M2 Developing motor

M3 Registration motor

M4 Fixing motor

M5 Pickup motor

M7 Scanner motor

FAN

FM1 Fixing/Fixing power supply cooling fan