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Epson Stylus CX7300 Service Manual

Epson Stylus CX7300
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EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C
OPERATING PRINCIPLES Overview 45
Confidential
2.1.3.1 Printing Process
This section explains how the printhead of the on-demand inkjet printer fires ink drop
from each of the nozzles.
1. When not firing ink drop
When the printing signal is not output from the C690 main board, or the PZT drive
voltage is not applied, the PZT does not change its shape. Therefore, the PZT does
not push the ink cavity. The ink pressure inside the ink cavity is kept normal. (refer
to Figure 2-6 (p.45) “When not firing ink drop”)
2. When firing ink drop
When the print signal is output from C690 main board, the nozzle selector IC
provided on the printhead transmits the data in 1-byte unit. Based on the drive
voltage generated on the main board, the PZT selected by the nozzle selector IC
pushes the top of the ink cavity. By this operation, the ink stored in the ink cavity
is ejected from nozzles. (refer to Figure 2-6 (p.45) “When firing ink drop”)
Figure 2-6. How to Fire Ink Drop
2.1.3.2 Printing Method
EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200/TX203/TX209/SX200/
SX205 and Stylus CX8300/CX8400/DX8400/NX400/TX400/TX405/TX409/SX400/
SX405 offers printing with variable sized dot or printing with economy sized dot.
Variable dot mode
This mode is developed to improve the print quality on Epson designated paper.
Three sizes of dot; micro, middle, and large are automatically selected and used
for printing according to the print data, basically the same as conventional models.
Superior quality can be achieved on the Epson paper.
Economy dot mode
Fixed larger dot is used for printing in economy mode, which enables fast printing
with lower resolutions.
Ink path PZT Ink Cavity
Nozzle Nozzle Plate
PZT drive voltage is applied
When not
firing ink drop
When firing
ink drop

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Epson Stylus CX7300 Specifications

General IconGeneral
Device TypeMultifunction printer
Printer TypeInkjet
Maximum Print Resolution5760 x 1440 dpi
Scanner TypeFlatbed
Scanning Resolution1200 x 2400 dpi
InterfaceUSB 2.0
Ink Cartridge Configuration4 individual ink cartridges
Inkjet TechnologyEpson Micro Piezo
DisplayLCD
Media TypePlain paper, photo paper
Standard Media SizeA4
Paper Sizes SupportedA4, A5, B5, Legal, Letter
Dimensions (W x D x H)43.4 cm x 32.7 cm x 18.5 cm
Weight5.9 kg

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