Epson Stylus Pro 7600 Service Manual page 105

EPSON Stylus Pro 7600/9600
PRINT HEAD
Stylus Pro 7600/9600 employs a single print head which incorporates both functions
for black and color. (The preceding model has two print heads, namely, head B and
head C.)
The print head incorporates a thermistor. According to the temperature around the head
detected by the thermistor, the CPU on the Main Board controls the ink discharge
speed and the amount of ink to be discharged.
Printing method: On-demand ink-jet
Nozzle configuration: 96 nozzles x 7 rows = 672 nozzles
(See Figure 2-3 for nozzle arrangement.)
Black: 192 nozzles (96 nozzles for each of Black1 and Black2)
Color: 480 nozzles (96 nozzles for each of cyan, magenta,
light cyan, light magenta and yellow)
Nozzle pitch: 0.141mm (1/180 inch) for each color
Table 2-2. Relationship between Nozzle Rows and Colors
Ink Type Nozzle Row
Pigment A
B
C
D
E
F
G
Dye A
B
C
D
E
F
G
Operating Principles
Color
Photo Black or Matte Black
Gray or Matte Black
C
Lc
M
Lm
Y
Bk
Bk
C
Lc
M
Lm
Y
Print Mechanism Components
Carriage Moving Direction
Figure 2-3. Nozzle Arrangement
Drive waveform:
There are three printing modes (drive waveforms) for each of use of pigment ink
and use of dye ink.
Table 2-3. Printing Modes (Drive Waveforms)
Waveform Ink Discharged
Ink Type
Name (ng)
VSD1 13.8-27.6-41.5
Pigment ink
VSD2 4.5-9.5-23.0
VSD4 4.5
Revision A
Drive Frequency Print Resolution
H360 x V360
8.64 KHz
H720 x V360
H720 x V720
8.64 KHz
H1440 x V720
2 shots at 6.84 KHz H2880 x V1440
CR Speed
240 CPS
240 CPS
190 CPS
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