Name: Epson Stylus C110
Brand: Epson
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EPSON Stylus C110/C120/D120 Revision B

OPERATING PRINCIPLE Electrical Circuit Operating Principles 35

2.3 Electrical Circuit Operating Principles

This section describes the operating principles of C687 main board and C687 PSB

board.

The electric circuit of Stylus C110/C120/D120 consists of the following boards.

 Main Board

 C687 main board

 Power Supply Board

 C687 PSB/PSE board

 Panel Board

 C687 PNL board

NOTE: CPU and ASIC is integrated as one chip (IC8) on the Main Board.

2.3.1 Power Supply Board

The PSB/PSE board of Stylus C110/C120/D120 employs the simulated oscillating

stimulation flyback converter circuit method, and it supplies +42VDC to the drive line.

The application of the output voltage is described below.

AC voltage input from AC inlet first goes through filter circuit that removes high

frequency components and is then converted to DC voltage via the rectifier circuit and

the smoothing circuit. DC voltage is then lead to the switching circuit and FET QF1

preforms the switching operation. By the switching operation of the primary circuit,

+42VDC is generated and stabilized at the secondary circuit.

Table 2-5. Application Of The DC Voltages

Voltage Application

+42VDC

• Motors (CR Motor, PF Motor)

• Printhead drive voltage

• Printhead nozzle selector 42V drive voltage

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Print Quality

maximum resolution	5760 X 1440 dpi
minimum ink droplet volume	3 pl

Print Speed

black text memo (A4)	Approx. 37 ppm (Draft) / 25 ppm (Default)
colour text memo (A4)	Approx. 20 ppm (Draft) / 11 ppm (Default)
photo (4R/4x6”)	Approx. 35 sec per photo (Draft W/Border)

Ink Cartridges

Paper Handling