Epson WF-4640 Series User Manual

Confidential
Adjustment Details of Adjustments 80
Epson WF-5690/4640/4630/5620/5190/5110 series Revision D
Ink Leakage Inspection Condition

Air pressure power : 48 ±2 Kpa
 Air pressure time : 10 sec
 Air pressure hold time : 30 sec
 Air pressure judgement standard : Less than 0.4 Kpa
Checking procedure
1. Turn each valve of the Ink Leak Measurement Jig as follows:

Valve A: Open
 Valve B: Open
 Valve C: Open
2. Connect the Ink Leak Check Cartridge to the Ink Leak Measurement Jig.
Figure 3-39. Ink Leak Check (1)
3. Install the Ink Leak Check Cartridge into the ink cartridge slot of the printer to check.
4. Press the power button of the pressure gauge.
5. Confirm the value on the pressure gauge is 0.0 kPa. Otherwise, restart the pressure gauge.
6. Pull the plunger up to the 20 mark.
Figure 3-40. Ink Leak Check (2)
Connect tube while pressing here.
Tube of Ink Leak Check Cartridge
Pull the plunger up to the 20 mark.

Epson WF-4640 Series Specifications

General

Max Print Resolution	4800 x 1200 dpi
Automatic Duplex Printing	Yes
Scanner Type	Color flatbed / ADF
Max Scan Resolution	1200 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct, NFC
Functions	Print, Copy, Scan, Fax
Mobile Printing	Epson Connect, Apple AirPrint, Google Cloud Print
Ink Type	DURABrite Ultra pigment ink
OS Compatibility	Windows, Mac
Print Technology	Inkjet
Print Speed (ISO)	20 ppm (black), 20 ppm (color)
Paper Capacity	80 sheets rear feed
Display	color touchscreen
Weight	31.3 lbs