Epson Stylus COLOR 3000

EPSON Stylus COLOR 3000
EPSON Stylus Color 3000 Service Manual
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2.4 Ink System Management
This section explains how the ink system protects the printheads and ensures high print quality. The printer
monitors the ink system by referring to the value for the timer counter IC. This IC has a back-up lithium
battery and timer counter stored in the EEPROM. The printer has the following counters:
 Protect Counter A
 Ink Consumption Counter
 One-time Flag
Ink System Operations
The ink system operations are described below.
Power on
Performed when the printer is turned on. It runs a cleaning sequence after referring to the counter value.
Initialization
Performed when the printer receives an initialization command. The CR returns to and remains in the home
position during this operation.
Ink Cartridge Replacement
Initialized through the control panel when the ink cartridge needs replacing. It determines whether an ink
cartridge is installed or not and runs a cleaning sequence if necessary.
Cleaning
Solves a decline in print quality caused by nozzle abnormalities such as clogging or inaccurate ink ejection.
Print Start
Runs the cleaning or flushing operation after power on and before the printer starts printing.
Flushing
Performed to eject a few ink dots during printing to prevent an increase in ink viscosity.
Waiting
Performs flushing after printing to avoid nozzle clogging caused by viscous ink.
False Absorption
Absorbs ink inside the cap and removes ink from the nozzle plate after ink is ejected.
Rubbing
Eliminates ink and dust that adhere to the nozzle surface. A few dots of ink are ejected to moisten the nozzle
surface prior to this operation.
Micro Absorption
Ejects bubbles formed inside the cavity.
Carriage Lock
Locks the carriage when turning off the printer or when no printing has been performed for at least 5 minutes
with the power on.