EPSON Stylus Pro 7600/9600

Revision A

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 2-3for 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

Color

Pigment

A

Photo Black or Matte Black

 

 

 

 

B

Gray or Matte Black

 

C

C

 

 

 

 

D

Lc

 

E

M

 

 

 

 

F

Lm

 

G

Y

 

 

 

Dye

A

Bk

 

B

Bk

 

C

C

 

D

Lc

 

E

M

 

F

Lm

 

G

Y

 

 

 

 

 

 

 

 

 

Paper Feed Direction

A Row

B Row

C Row

D Row

E Row

F Row

G Row

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)

Ink Type

Waveform

Ink Discharged

Drive Frequency

Print Resolution

CR Speed

Name

(ng)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VSD1

13.8-27.6-41.5

8.64 KHz

H360 x V360

240 CPS

 

 

H720 x V360

 

 

 

 

 

 

 

 

 

 

 

 

 

Pigment ink

VSD2

4.5-9.5-23.0

8.64 KHz

H720 x V720

240 CPS

 

 

H1440 x V720

 

 

 

 

 

 

 

 

VSD4

4.5

2 shots at 6.84 KHz

H2880 x V1440

190 CPS

 

 

 

 

 

 

 

Operating Principles

Print Mechanism Components

105

Page 105
Image 105
Epson 7600, 9600 service manual Print Head, Relationship between Nozzle Rows and Colors, Printing Modes Drive Waveforms