Epson WF-7840 Series User Manual

Scanned Image Problems
Uneven Colors, Dirt, Spots, and so on Appear when Scanning from the Scanner
Glass
There is dust or dirt on the originals or the scanner glass.
Solutions
Remove any dust or dirt that adheres to the originals, and clean the scanner glass.
& “Cleaning the Scanner Glass and Document Mat” on page 153
The original was pressed with too much force.
Solutions
If you press with too much force, blurring, smudges, and spots may occur.
Do not press with too much force on the original or the document cover.
& “Placing Originals” on page 37
Straight Lines Appear when Scanning from ADF
There is dust or dirt on the ADF or originals.
Solutions
Clean the ADF, and remove any dust or dirt that adheres to the originals.
& “Cleaning the ADF” on page 155
Oset
Appears in the Background of Scanned Images
Solving Problems > Printing, Copying, Scanning, and Faxing Quality is Poor > Scanned Image Problems
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Epson WF-7840 Series Specifications

General

Print Resolution	4800 x 2400 dpi
Max Print Size	13" x 19"
Duplex Printing	Yes
Scanner Type	Flatbed, ADF
Scan Resolution	1200 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct
Display	4.3" Color Touchscreen
Category	Printer
Functions	Print, Copy, Scan, Fax
Maximum Paper Size	13" x 19"
Input Paper Capacity	250 sheets
ADF Capacity	50 sheets
Print Technology	PrecisionCore
Print Speed Black	25 ppm
Print Speed Color	12 ppm
Paper Capacity	250 sheets
Printing Technology	PrecisionCore
Mobile Printing	Apple AirPrint, Mopria Print Service, Epson Connect
Paper Sizes	A4, A5, Letter, Legal
Paper Capacity Maximum	500 sheets
Monthly Duty Cycle	50, 000 pages
Product Type	All-in-One Printer