Epson WF-4640 Series User Manual

Confidential
Adjustment Details of Adjustments 67
Epson WF-5690/4640/4630/5620/5190/5110 series Revision D
3.2.4 PG Adjustment
This section describes the procedure for the platen gap (PG) adjustment.
Tools
 Thickness gauge: 1.37 mm (x2), 1.47 mm (x2)
 Teflon Tape: Commercial item (thickness: 0.08 mm)
When performing the PG adjustment, make sure of the following.
 Move the Carriage Assy by pulling the Timing Belt.
 Be careful not to damage the nozzle surface of the Printhead with the thickness gauge.
 Be careful not to damage the PF Scale when removing/installing the PG Cam Left.
 The PG position of this printer can be set to four points, from PG 1 to PG 4. Perform the
PG adjustment with the PG position set to PG 1.
 The standard range of the PG and the adjustment pitch are as follows.
• Standard: 1.5 ± 0.0.5 mm (PG position: PG 1)
• Adjustment pitch: 0.05 mm (distance between notches on the PG Cam)
 When performing the PG adjustment, install the Printhead to the Carriage Assy, and
remove the following parts beforehand.
• Exterior parts
• Main Board Unit
• Metal Plate Left
• CR Cover
Position PG (mm) Application
PG 1 1.50 Printing plain paper/EPSON special paper, PG adjustment
PG 2 1.85 Select when PG 1 is too narrow, printing envelopes/matte paper
PG 3 2.50 Select when PG 2 is too narrow
PG 4 3.00 Printing envelopes

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