Printer Mechanism Operating Principles; Printing Operation Principles - Epson Stylus 1500 Service Manual

Operating Principles
Operating Principles

PRINTER MECHANISM OPERATING PRINCIPLES

Printing Operation Principles

This printer mechanism uses a drop-on-demand ink jet system similar to the one used on all other
EPSON ink jet printers. However, the printhead in this system has been completely redesigned to
make it more compact and to ensure a high level of reliability. The printer has two printheads:
monochrome (black ink) and color (yellow, cyan, and magenta ink).
Monochrome Printhead
The figure below shows the structure of the monochrome printhead, which consists of the nozzle,
nozzle plate, piezo elements, cavities, and printhead driver board.
Color Printhead
The figure below shows the structure of the color printhead. Its structure is different from the
monochrome printhead. The color printhead consists of the nozzle plates, two rows of nozzles,
piezo elements, and cavities for each of the three colors.
For Ink Cartridge
Printhead Driver Board
Pi ez o
Nozzle Plate
Cavity
Nozzle
Figure 2-1. Black Printhead Structure
Printhead Driver Board
For Cartridge
Piezo
Nozzle Plate
Cavity
Nozzle
Figure 2-2. Color Printhead Structure
EPSON Stylus 1500 Service Manual 2-3