EPSON Stylus Photo 720 / EPSON Stylus Photo EX3
Revision A
Operating Principles
Overview
33
2.1.2.1 Printing Process
This section explains the process in which the printheads of On-Demand inkjet printers
eject ink from each nozzle.
1.
Normal State:
When no printing signal is sent from PC, or no PZT drive voltage is applied, PZT
does not change shape, therefore PZT does not squeeze the cavity. Ink pressure
inside the cavity is kept normal.
(Refer to Figure 2-3.)
2)
Ejecting State:
When the print signal is output from the C301MAIN board, IC (Nozzle Selector)
located on the printhead unit latches data once by 1-byte unit. An appropriate PZT
latched by the nozzle selector is pushed into the cavity by the common voltage
applied from the main board. By this operation, ink stored in the cavity spurts out
from nozzles.
(Refer to Figure 2-3.)
Figure 2-3. Print Head
PZT
Ink Path
Ink Cavity
Nozzle Plate
Nozzle
PZT drive voltage
Содержание Stylus Photo 720
Страница 5: ...Revision Status Revision Issued Date Description Rev A April 6 2000 First Release ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 29: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 51: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 64: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 94: ...C H A P T E R 5 ADJUSTMENT ...
Страница 114: ...C H A P T E R 6 MAINTENANCE ...
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