Epson Stylus Pro 4000 Professional Edition Service Manual - Page 132
Paper Feed Mechanism
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EPSON Stylus Pro 4000 Revision B 2.2.4.3 Cutter Solenoid/CR Lock Mechanism Installed on the front of the Carriage Unit, this is a DC solenoid for controlling cutter pressure of the cutter used for roll paper cutting. In addition, the CR Lock Mechanism is used jointly so that when the Carriage Unit moves from the printing area further to the right of the capping position (CR_Home), the lock activates to prevent Carriage Unit movement. When the Cutter Solenoid turns ON with the Carriage Unit at capping position, the Cutter Solenoid attracts the Actuating Plate of the CR Lock releasing Kicker, the Kicker kicks the CR Lock, and then the CR Lock is released. The printer is also equipped with the mechanism to lock the Carriage Lock to prevent the Kicker from moving vertically during transportation to release the CR Lock. NOTE: Refer to "1.2.7.4 Cut Specification" (p.20). 2.2.5 Paper Feed Mechanism This printer uses friction feed to carry out highly precise feeding of roll paper and cut sheets, and comprises a unique paper feed mechanism. The paper feed mechanism is formed of the PF Motor, PF Roller, Sub Roller Unit, Driven Roller Unit and Paper Eject Roller. Paper feed mechanism main components and their functions are described below. Driven Roller Unit PF Roller Sub Roller Unit Cutter Actuating Plate Kicker Lock Lever for Transportation Cutter Solenoid CR Lock Figure 2-24. Carriage Components: Cutter Solenoid PF Motor Paper Eject Roller Figure 2-25. Paper Feed Mechanism Operating Principles Printer Mechanism Components 132