Epson WF-4820 Series User Manual

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Ripple Patterns Appear in an Image
You may see a ripple pattern (called a moiré) in scanned images of printed documents. This is caused
by interference from differing pitches in the scanner's screen and your original's halftone screen. To
reduce this effect, adjust these Epson Scan settings (if available) and try scanning again:
• Select the Descreening setting on the Advanced Settings tab.
• Select a lower Resolution setting.
• Place the original at a slightly different angle.
Parent topic: Solving Scanned Image Quality Problems
Related references
Additional Scanning Settings - Main Settings Tab
Additional Scanning Settings - Advanced Settings Tab
Streaks Appear in All Scanned Images
If streaks appear in all your scanned images, try these solutions:
• Clean the scanner glass with a soft, dry, lint-free cloth or use a small amount of glass cleaner on the
cloth, if necessary. Paper towels are not recommended.
• Keep the document cover closed to prevent dirt or dust from getting inside.
Parent topic: Solving Scanned Image Quality Problems
Scanned Image Edges are Cropped
If the edges of a scanned image are cropped, make sure your original is placed correctly for scanning. If
necessary, move your original away from the edges of the scanner glass slightly.
In the Epson Scan 2 or Epson ScanSmart settings, set the Edge Fill setting to None.
Parent topic: Solving Scanned Image Quality Problems
Related topics
Placing Originals on the Product
Solving Faxing Problems
Check these solutions if you have problems faxing with your product.
Cannot Send or Receive Faxes
Cannot Receive Faxes with a Telephone Connected to Your Product

Epson WF-4820 Series Specifications

General

Print Resolution	4800 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct
Paper Capacity	250 sheets
Automatic Document Feeder	Yes
ADF Capacity	35 sheets
Duplex Printing	Yes
Display	4.3" color touchscreen
Functions	Print, Copy, Scan, Fax
Scan Resolution	1200 x 2400 dpi
Fax Speed	33.6 Kbps
Weight	20.5 lbs
Print Speed (Black)	25 ppm
Print Speed (Color)	12 ppm
Scanner Type	Flatbed, ADF
Paper Sizes Supported	A4, A5, A6, B5, Letter, Legal, Executive, 3.5 x 5", 4 x 6", 5 x 7", 8 x 10", 8.5 x 11", 8.5 x 14"
Mobile Printing	Apple AirPrint, Mopria, Epson Connect
Ink Cartridges	Black, Cyan, Magenta, Yellow
OS Compatibility	Windows, Mac OS