Scanning Speed Slows Down When Scanning Continuously; Scanning Takes A Long Time; Scanned Image Problems; Straight Lines Appear When Scanning From Adf - Epson DS-780N User Manual

User's Guide

Scanning Speed Slows Down when Scanning Continuously

When scanning continuously using the ADF, scanning slows down to prevent the scanner mechanism from
overheating and being damaged. However, you can continue scanning.
To regain normal scanning speed, leave the scanner idle for at least 30 minutes. Scanning speed does not recover
even if the power is off.

Scanning Takes a Long Time

❏ When the resolution is high, scanning may take some time.
❏ Computers with USB 3.0 (SuperSpeed) or USB 2.0 (Hi-Speed) ports can scan faster than those with USB 1.1
ports. If you are using a USB 3.0 or USB 2.0 port with the scanner, make sure it meets the system requirements.
❏ When using security software, exclude the TWAIN.log file from monitoring, or set the TWAIN.log as a read-
only file. For more information on your security software's functions, see the help and so on supplied with the
software. The TWAIN.log file is saved in the following locations.
❏ Windows 10/Windows 8.1/ Windows 8/ Windows 7/ Windows Vista:
C:\Users\(user name)\AppData\Local\Temp
❏ Windows XP:
C:\Documents and Settings\(user name)\Local Settings\Temp

Scanned Image Problems

Straight Lines Appear when Scanning from ADF

❏ Clean the ADF.
Straight lines may appear in the image when trash or dirt gets into the ADF.
❏ Remove any trash or dirt that adheres to the original.
Related Information
"Cleaning Inside the Scanner" on page 100
&

The Image Quality is Rough

❏ If the resolution is low, try increasing the resolution and then scanning.
❏ In Epson Scan 2, adjust the image using items on the Advanced Settings tab, and then scan.
Related Information
"Setting a Resolution That Suits the Scanning Purpose" on page 62
&
"Image Adjustment Features" on page 75
&
Solving Problems
118