Printing Mechanism; Printhead Structure - Epson Stylus COLOR 1520 Service Manual

EPSON Stylus COLOR 1520

2.2.2 Printing Mechanism

The printing method used for this printer is On-demand ink jet, same as for other EPSON ink jet printers.
The new method used for the printhead enables the printer to produce output in high quality at a higher
speed. The printing mechanism has 2 parts: ink cartridge and printhead. The ink cartridge is filled with
ink.

2.2.2.1 Printhead Structure

The printhead for this printer has the black head and color head. The structures of the printheads are
basically the same except for the nozzle configuration. The black head, used for the black ink only, is
composed of 128 nozzles (32 nozzles for each of 4 rows) The color head, composed of 3 heads for
Magenta, Cyan, and Yellow, has 64 nozzles (32 nozzles for each of 2 rows) for each color.
Printhead Driver Circuit Board
To the ink cartridge.
Piezo
Nozzle Plate
Cavity
Nozzle
Figure 2-2. Printhead Structure
2-2
Rev. A