HP N9120 HP Scanjet N9120 User Guide - Page 36

Scanned s are missing at the scan destination, Optimizing scanning and task speeds - scanner troubleshooting

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Chapter 4 Scanned pages are missing at the scan destination When scanning with the ADF, pages that stick together are scanned as one item. The hidden pages are not scanned. Enable Misfeed (Multipick) Detection to stop the scan or copy process if multiple pages are fed into the scanner at one time. To enable the Misfeed (Multipick) Detection feature in an HP Smart Document Scan Software profile, follow these steps: 1. Open the HP Smart Document Scan Software. 2. Select a scan profile, and then click Edit. 3. On the Scan tab of the Profile Settings dialog box, click Advanced Settings. 4. On the More tab of the Properties dialog box, select the Enable check box. Optimizing scanning and task speeds Several settings influence the total time for a scanning job. When you want to optimize scanning performance, consider the following information. • To optimize scanning speed for pages that are A4 (or Letter) size or smaller, load the pages with the long edge feeding into the automatic document feeder (ADF). Scanning pages by loading the long edge first minimizes the length of the media passing the scan heads, which results in faster scans. NOTE: In the scanning software, choose the layout setting that matches the orientation of the originals in the ADF. • To optimize data transfer from the scanner to the scanning software on the computer, enable scanner hardware (JPEG) compression. Typically, the use of scanner compression reduces the time to complete all color scans and grayscale scans with resolution above 300 dpi. Scanner compression affects the rate of data transfer only and can be used with all output formats. • If you are scanning to edit text, the optical character recognition (OCR) software requires more processing time than for non-OCR scans, which is normal. Wait for the item to scan. NOTE: For the best OCR results, scanner compression should be set to the minimum compression level or disabled. • Scanning at a higher resolution than necessary increases scanning time and creates a larger file with no additional benefit. If you are scanning at a high resolution, set the resolution to a lower level to increase scanning speed. See also • "Automatically rotate scanned pages" on page 14 • "Use scanner hardware compression for faster scans" on page 16 • "Scan files are too large" on page 35 The image is completely black or completely white When scanning with the ADF, check the paper orientation. 34 Troubleshooting

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Scanned pages are missing at the scan destination
When scanning with the ADF, pages that stick together are scanned as one item. The
hidden pages are not scanned. Enable Misfeed (Multipick) Detection to stop the scan or
copy process if multiple pages are fed into the scanner at one time.
To enable the Misfeed (Multipick) Detection feature in an HP Smart Document Scan
Software profile, follow these steps:
1.
Open the HP Smart Document Scan Software.
2.
Select a scan profile, and then click
Edit
.
3.
On the
Scan
tab of the
Profile Settings
dialog box, click
Advanced Settings
.
4.
On the
More
tab of the
Properties
dialog box, select the
Enable
check box.
Optimizing scanning and task speeds
Several settings influence the total time for a scanning job. When you want to optimize
scanning performance, consider the following information.
•
To optimize scanning speed for pages that are A4 (or Letter) size or smaller, load the
pages with the long edge feeding into the automatic document feeder (ADF).
Scanning pages by loading the long edge first minimizes the length of the media
passing the scan heads, which results in faster scans.
NOTE:
In the scanning software, choose the layout setting that matches the
orientation of the originals in the ADF.
•
To optimize data transfer from the scanner to the scanning software on the computer,
enable scanner hardware (JPEG) compression. Typically, the use of scanner
compression reduces the time to complete all color scans and grayscale scans with
resolution above 300 dpi. Scanner compression affects the rate of data transfer only
and can be used with all output formats.
•
If you are scanning to edit text, the optical character recognition (OCR) software
requires more processing time than for non-OCR scans, which is normal. Wait for the
item to scan.
NOTE:
For the best OCR results, scanner compression should be set to the
minimum compression level or disabled.
•
Scanning at a higher resolution than necessary increases scanning time and creates
a larger file with no additional benefit. If you are scanning at a high resolution, set the
resolution to a lower level to increase scanning speed.
See also
•
“
Automatically rotate scanned pages” on page 14
•
“
Use scanner hardware compression for faster scans” on page 16
•
“
Scan files are too large” on page 35
The image is completely black or completely white
When scanning with the ADF, check the paper orientation.
Chapter 4
34
Troubleshooting