Epson 4000 Service Manual - Page 119
Ink Supply Mechanism
UPC - 010343848337
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EPSON Stylus Pro 4000 2.2.2 Ink Supply Mechanism This printer has ink cartridges for 8 colors held by Ink holders (I/H) located on the left and right sides of the printer. There are protruding tabs and markings on the top of each color ink cartridge to prevent mistaken installation. Explanation of valve mechanism mounted on the cartridge The valve automatically opens and closes when the ink cartridge is installed and removed. Ink cartridge Ink cartridge holder (Opening/closing) Revision B The ink flow is as shown below. Each color's ink cartridge → Each color's I/H (Ink Holder) → Each color's ink tube → Each color's head dumper (Carriage) → Print Head Ink Holder Ink tube Figure 2-2. Valve Mechanism To Print Head Ink Cartridge Ink Holder (x4) Figure 2-3. Ink Supply Mechanism CSIC Memory chip information for each color ink cartridge passes through the CSIC relay circuit board on each Ink holder and is stored in the EEPROM on the C511 Main Board. Various information such as installed ink color and remaining quantity is stored in the EEPROM. (Refer to "Ink Information Menu" (p.77).) Operating Principles Printer Mechanism Components 119