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EPSON Stylus Pro 7600/9600 Revision A
Operating Principles Print Mechanism Components 105
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
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 2-2. Relationship between Nozzle Rows and Colors
Ink Type Nozzle Row Color
Pigment A Photo Black or Matte Black
B Gray or Matte Black
CC
D Lc
EM
F Lm
GY
Dye A Bk
BBk
C C
DLc
E M
FLm
G Y
Table 2-3. Printing Modes (Drive Waveforms)
Ink Type
Waveform
Name
Ink Discharged
(ng)
Drive Frequency Print Resolution CR Speed
Pigment ink
VSD1 13.8-27.6-41.5 8.64 KHz
H360 x V360
H720 x V360
240 CPS
VSD2 4.5-9.5-23.0 8.64 KHz
H720 x V720
H1440 x V720
240 CPS
VSD4 4.5 2 shots at 6.84 KHz H2880 x V1440 190 CPS
Carriage Moving Direction
A Row
B Row
C Row
D Row
E Row
F Row
G Row
Paper Feed Direction
B Row