Slow Scanning Performance with Certain Scan Features, Scan Functions or Scan Settings

What you will see

Scanning speeds fluctuate and inconsistent scanning performance is regularly seen utilizing one of more of these MFP functions:

Scan to PC

Scan to E-mail

Scan to Network Folder (SNF)

Scan to Solutions Composer (App)

Scan to (Other apps)

Scan to FTP

Scan to USB

Affected products

Any MFP that utilizes these features or scan settings will observe slower scanning performance:

PDF Compression

Color
(24bit)

OCR
(Accuread Automate)

Resolution:
High(dpi)

Content type:
Text/Photo or Photo

Suggested remedy

Disable or adjust configurable scan settings for features mentioned above.

Settings and performance example

This example compares how scanning performance is impacted when PDF compression
is set to High
.

Starting with configurable scan settings for...	With a value set to...	Results in performance...	Versus, PDF compression enabled settings...	And, the performance trade off in...
Resolution	Low (75 dpi)	Scan quality – Low Scan speed – Faster File size – Larger	300 dpi (Locked)	Quality – Higher but graphics detail muted Scan speed – Slower or slow File Size – Smaller
Color Depth	Black and White (Color – Off)	Black and White (Color – Off)
Content Type	Text/Graphics	Text/Graphics
Compressed PDF*	Normal (Disabled )	High (Enabled )

Notice how higher resolution (300dpi) and PDF compression (Enabled/High) impacts scan speed. To explain this behavior, it only needs to be known that high PDF compression requires more processing power which leads to more processing time and a slower scan speeds.

Setting adjustments and how they can impact scanning performance

PDF Compression	File Size vs. Scan speed	Resolution	Impact on file Size / Speed	Color Depth	Impact on Size / Speed	Content Type	Impact on Size / Speed
Off	Larger file size but faster scan speed.	600 dpi or greater	High / Slowest	Color (24-bit)	High/Slow	OCR **	High / Slowest
High / Enabled / Secure Compressed	Smaller file size but slower scan speed.	400 dpi	High / ?*	Grey (8-bit)	Medium	Photo	High / ?
300, 200, 150 dpi	Medium / ?	Black and White (1-bit)	Low/Fast	Text/Graphics	Medium / ?
75 dpi	Low / Fastest	Text	Low / Fastest

NOTE:
Certain settings shown in this table are not available in every scan-mode on the device.

* Any mid-level setting may yield slight performance gains; however, all information in this article relating to p
erformance gains
or losses
is variable
and dependent upon the complexity of the document being scanned.

Still Need Help?

If you require additional assistance, please see Contact
information.
NOTE:
When calling for support, you will need your printer model/machine type
and serial number
(SN
).

Please be near the products described in this article to expedite the support process and reduce call-back situations.

LEGACY ID: SO7464