EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Operating Principles Print Mechanism Components 151
2.2.2 Carriage (CR) Mechanism
To ensure reliable and high-precision printing on wide-width paper (Stylus Pro 9400/
9800 support B0 size, and Stylus Pro 7400/7800 support A1 size), the printer is
equipped with a unique carriage mechanism which enables stable and high-precision
movement of the on-carriage head.
The carriage mechanism consists of the following components.
CR unit
CR motor
CR HP sensor
CR encoder sensor
PG HP sensor
P EDGE sensor
Ink mark sensor
Cutter Solenoid
This section provides explanations on the following items.
Carriage Moving Unit
Platen Gap Adjustment Unit
Cutter Solenoid/CR Lock Mechanism
Figure 2-2. Carriage Mechanism
Carriage
CR HP Sensor
and Flag
Encoder Sensor and
Timing Fence
PG HP Sensor
and Slide Gear
P EDGE Sensor
Ink Mark
Sensor