Epson WF-7840 Series User Manual

Copy Quality is Poor
Color Missing, Banding, or Unexpected Colors Appear in Copies
The print head nozzles may be clogged.
Solutions
Use the Print Quality Adjustment feature. If you have not used the printer for a long time, the print head
nozzles may be clogged and ink drops may not be discharged.
& “Adjusting the Print Quality” on page 150
Colored Banding Appears at Intervals of Approximately 1.1 cm or 3.3 cm
e following causes can be considered.
The paper type setting does not match the paper loaded.
Solutions
Select the appropriate paper type setting for the type of paper loaded in the printer.
& “List of Paper Type” on page 32
The print head position is out of alignment.
Solutions
Align the print head using the Print Quality Adjustment feature.
& “Adjusting the Print Quality” on page 150
Solving Problems > Printing, Copying, Scanning, and Faxing Quality is Poor > Copy Quality is Poor
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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