Xerox Documate 3640 User Guide
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Xerox® DocuMate® 3640 User’s Guide 161 Document Settings • Main panel —this panel contains the most commonly used scan settings. When the Basic source configuration mode is selected, this is the only panel available. Change to the Advanced source configuration mode to enable the other panels which are also described in this section. • Advanced panel —this panel contains advanced document handling options. If you select an option in this panel that also appears on the Main panel, when you return to the Main panel that option will be selected. The Document settings section when the Basic document source configuration mode is selected. The Document settings section when the Advanced document source configuration mode is selected.
Xerox® DocuMate® 3640 User’s Guide 162 Disabled Options in this Section Some options in the interface may be grayed out an d cannot be selected. Grayed out options are either not appropriate for the current scanner, the software needed to enable the feature is not installed, or the feature is dependent on another setting in the scanner's interface. Hover the mouse cursor over a grayed out feature to see information about why the feature is unavailable. When you are using a scanner that has multiple sources, such as an ADF with Flatbed combination scanner, some options may be disabled based on th e current source displayed in the source list. For example when the flatbed source is selected, the manual feed option will be disabled. If an option is unavailable, check to see which source is displayed at the top of the source list when in the Advanced interface view. Note that even when Sources identical is selected, any options that are only available for a specific source will be discarded if the scanner scans from the source that does not have those options. When Flatbed is displayed here, only the options that can be used for the flatbed will be available in the scanner interface. Click on one of the color modes under the source you want to configure. That source will now be displayed at the top of the list, and the options for that source will be available in the scanner interface.
Xerox® DocuMate® 3640 User’s Guide 163 Main Panel Options Some of the options in this panel may have advanced adjustment opti ons on a different panel in this section. When the Advanced configuration mode is selected, an icon will appear next to those features which have adjustment options on another tab. Click on one of the icons to go to the area of the interface where the adjustment options are located. Click on a link below to go to the appropriate page in this section for instructions on adjusting the option that is displayed on the Main tab. See Advanced Panel Options on page 167 • Automatic cropping options • Skip blank originals • Cleanup edges Resolution The resolution determines the amount of detail yo u can see in the scanned image. Resolution is the clarity of the image measured in dots-per-inch (dpi). Move the slider left or right to change the resolu tion for the scanned image. The higher the resolution, the clearer the image. However, high resolution scans also produce larger file sizes. The available range displayed in the slider area are within the mini mum and maximum range supported by your scanner. The resolution slider will always displa y the correct range for the current scanner. Choosing resolution values Typically, when making copies of black and white documents, 100–150 dpi will create an image of similar quality to the original. When making copi es of color documents or photographs, 150–200 dpi will create an image of similar quality to the original. Higher resolution settings are generally used for crea ting an image that can be enlarged without losing image quality, but take longer to scan. Some resolution settings for typically scanned items are: • Text document letters, forms, or other typed black and white documents – 100 dpi to 150 dpi
Xerox® DocuMate® 3640 User’s Guide 164 • Text document letters or forms with hand printed text – 150 dpi • Text document (for OCR) forms, letters, memos, or spreadsheets – 300 dpi • Business cards or other items with small print – 300 dpi • Color page with graphics or color photographs – 150 dpi • Color photographs of poor quality for image enhancement – 300 dpi • Color photographs for printing – 200 dpi • Color photographs for email – 100 to 150 dpi • Magazine page with graphics, line art, or color photographs – 200 dpi Document Size Standard document sizes Click the drop down menu and select a pre-defi ned document size from the list. The available document sizes are within the scanner's range of minimum and maximum item size. Custom document sizes Select the measurement units you want to use from the Units list. If the Document size list does not include the document size for your scanning batch, click in one of the fields below the document size list. Input the wi dth of the document in the first field, then input the height in the second field. You can input a maximum of 14 inches in the height field. Please refer to Long Document if your scanner supports page lengths greater than 14 inches and you want to scan long pages. You can only specify values within the scanner's minimum and maximum supported item size. Please refer to the maintenance section of the sc anner user's guide for this information.
Xerox® DocuMate® 3640 User’s Guide 165 Long Document Select Long document to enable support of paper sizes up to the scanner maximum. After you select this option make sure you input the page length fo r your document in the custom input field, located below the Document size selection list. Note that some of the options in the scanner interf ace cannot be used when the page length will be greater than 14 inches. When you select this option, incompatible options will either be automatically disabled or the setting will simply be disc arded while scanning. For instance, the option Detect double feeds will usually be disabled when Long document is selected, even if the scanner supports DFD, as the added page length will cause a false double feed. Manual Feed Select this option to enable a delay from when th e last page is scanned and when the scanner stops the scan job. This allows you to scan one page at a time without having to click Scan for each page you put in the scanner. To scan with manual feed mode: 1. Select Manual feed in the scanner’s interface. 2. In the Timeout field, input the amount of time you want the scanner to wait from when the last page is scanned and when the scanner stops scanning. 3. Place a document in the scanner. 4. Click Scan. 5. The scanning progress dialogue on-screen will display a countdown indicating how much time you have to place the next document in the scanner. 6. When you are done scanning all pages in your document, you can click on Abort to stop the timer or simply let the timer run out. Detect Double Feeds Detect double feeds is the scanner's ability to de tect when two or more pages are fed through the scanner at the same time. When this option is turned on, ultrasonic waves are aimed at the document to detect multiple pages by the level at which the waves pass through the pages. The accuracy of this sensor depends on paper thickness and whether or not creasing is in the original document. This option is available in the interface only if the current scanner supports this feature. Te c h n i c a l N o t e : If you are getting false double feed errors, try cleani ng the inside of the scanner. Excessive dust on the sensor can cause false double feed errors. Refer to the maintenance section of the scanner's user guide for instructions on cleaning the scanner.
Xerox® DocuMate® 3640 User’s Guide 166 Straighten Image Select this option to let the scanner automatically determine if a page is skewed, then straighten its image. This option is only available if the scanner supports this feature. If you are scanning using an automatic document fe eder, and the page is fed through at too great of an angle, the image may not straighten correctly. In that case, re-scan the page making sure the paper guides are adjusted to the width of the pages in th e input tray so that the pages are pulled straight through the scanner. Rotate Image Select an option in this list to have the final image rotated when scanning is complete. Flip Back Side Select this option if you are scanning duplex pages th at are calendar style orientation. This option will rotate the back side image 180 degrees from the front side. When scanning in duplex mode without this option selected, the back side image of calendar orientation pages will appear upside down in the final scan. This option does not automatically determine book page orientation versus calendar page orientation. If you have this option selected when scanning book orientation pages, the image for the back side of the page will appear upside down in the final scan. If you are scanning a batch of documents that contain both types of orientation, we recommend that you select Automatic in the Rotate image list. This option is available only if the current scanner supports duplex scanning and the Duplex option is selected in the scanning interface. Merge Two Sides When scanning in duplex mode, you can enable this option to have both sides of a scanned item appear on one page in the final image file. The options in the list allow you to select where you want the front side image to appear in relation to the back side image in the final file.
Xerox® DocuMate® 3640 User’s Guide 167 The following image shows a cheque scanned in du plex mode without Merge two sides enabled, and the same cheque scanned with Merge two sides enable d. When Merge two sides is not enabled, side 1 and side 2 of the cheque are saved in two separa te files (IMG_0001 and IMG_0002 respectively). With Merge two sides enabled, both sides of the ch eque are in a single file (IMG_0003). If you are scanning a stack of items using a multipage file format, such as a PDF file, then each page in the final file will have both the front and back images of the scanned items. Height threshold Input the maximum height of images to be merged. The sides will not be merged if the height of either the front or rear image exceeds this value. For example, if you are scanning a batch of mixed documents such as cheques and statements, you may want both sides of the cheques merged into one image but not the statements. The Height thresh old needs to be lower than the length of the documents you do not want merged into a single file. Select one of the options in the Merge two sides list to enable this field. Note that you will also need to enable Long document if you want to have the maximum height threshold be longer than 14. Advanced Panel Options The options in this panel may also appear in the Main panel, but with additional settings for you to fine-tune the feature you've selected. Select the Advanced source configuration mode to show this panel.
Xerox® DocuMate® 3640 User’s Guide 168 Skip Blank Originals Select this option to have the scanner detect if a blank page has been fed through the scanner, and remove it from the final file. Typically you might us e this option when scanning a stack of two-sided pages which have a number of blank sides. • Blank threshold —you can use the Threshold slider to fine tune the sensitivity of the blank image detection. The results will depend on the scan se ttings and the types of documents being scanned. In general leave the threshold level at the default setting if you are scanning good-quality documents printed on standard 20lb printer paper. Try lowering the sensitivity level if your documents contain light colored text or drawings so those pages are not detected as blank. Raise the sensitivity level if you are scanning double -sided light-weight paper where images from the opposite side of the page may appear in the image of the blank side. Clean Up Edges Select this option to remove any thin lines from around the edges of the final scan. This option will fill the margins of the image with the detected edge color. When you select this option, the Width input field will automatically enable for you to input the size of the area you want to have filled with the background color. You can specify a fill size between approximately 0.04 to 0.39 inches (1 mm to 10 mm). Automatic Image Cropping Depending on the scanner model and installed soft ware, there may be more than one auto cropping option in the interface. • Crop to original —select this option to let the scanner automatically determine the size of the item being scanned. This option is only available if the scanner supports this feature. This option may occasionally be grayed out as not all scanning applications support this feature. Always properly adjust the paper guides to the wi dth of the paper in the input tray so that the pages feed into the scanner as straight as possible. Skewed pages may not crop properly. • Crop to length —this option tells the scanner to crop the final image to the bottom of the page being scanned. This option is only available if th e scanner supports this feature. This option may occasionally be grayed out as not all scanning applications support this feature. Always properly adjust the paper guides to the wi dth of the paper in the input tray so that the pages feed into the scanner as straight as possible. Skewed pages may not crop properly. Compression Options There are two types of image compression function s used during scanning. The input compression option is compressing the image wh en transferring it from the scanner to the TWAIN driver on the computer. The output compression option is the TWAIN driver compressing the image before it sends the image to the scanning applicat ion. In the scanning interface the input compression option is Compress transfers and the output option is Compression.
Xerox® DocuMate® 3640 User’s Guide 169 Compress transfers Select this option to have the scanner compress th e image in Gray and Color scans. This reduces the file size and allows for faster image transfer from the scanner to the computer. Once the compressed image is on the computer, scanner’ s driver will then uncompress the image, and perform any image processing functions that have been selected in th e scanning interface. The uncompressed image is then transferred to the scanning application. With Compress transfers, a scanning application such as Nuance PDF Converter, will receive the uncompressed image and save the image in whatever file format it uses. You can use the Quality slider to adjust the level of compression you want to use. When the Quality option is set to High quality, there is very little visual difference between a compressed scan and an uncompressed scan. When the quality option is set to High compression, there may be a greater visual difference between compressed and uncompressed scans. Quality You can fine tune the compression level by adjust ing the quality slider between high compression and high quality. When the quality level is set to hi gh compression, the scanner will scan and transfer images faster than high quality, but the imag e quality of the output scan will be lower. Subsampling The subsampling options allow you to select th e encoding ratio between color information and luminosity. Subsampling works by lowering the resolution of the RGB colors found in an image without affecting luminescence of the image. This compresses the image to create smaller file sizes but it can sometimes result in loss of image quality. De pending on the type of image being scanned, subsampling encoding may not have a noticeable affect in the final image file. You should try test scans using the different levels of subsampling to make sure you are happy with the image quality. • 4:4:4 —no subsampling and the ratio between co lor and luminosity remains unchanged. • 4:2:2 —mid-level ratio between color and luminosity. • 4:1:1 —highest ratio difference between color and lumi nosity, which results in saving the smallest file size. Compression This option is specific compression for file and memory transfers to an application. It is only available if the application you are using can accept a compressed image file. For instance, if your scanning application is set to receive JPEG compressed images, then the Compression field will display JPEG. Otherwise, the status for Compression will always be disabled and display Uncompressed because the scanning application you are using is requesting an uncompressed image. The Compress transfers option described herein compresses th e image for faster transfer from the scanner to the computer. The driver uncompresse s the image and transfers the uncompressed image to the scanning application. The Compression option will often be disabled as most applications do not support receiving a compressed im age file from the scanner driver.
Xerox® DocuMate® 3640 User’s Guide 170 When this option is available, it is an advanced us er and application option and should not be adjusted if you are not familiar with the technology. However, if you are certain that you are using an application that can receive a compressed image, and you want to be able to change the image compression type, you will need to enable user adjustable compression in the scanning interface. Please refer to the Driver Settings section for instructions. Please note that if you adjust this setting, and the application cannot actually accept the option you change, the scanning interface an d the application may crash. It is highly recommended that you leave the default options and let the application set any image compression. From the Windows Control Panel 1. Click on the Driver settings tab. 2. Select Enable user compression and Remember compression . Note that if these two options are grayed out an d you cannot select them, then these options are not available for your scanner. 3. Click on OK. 4. Open the scanner interface. 5. Change to the Advanced source configuration mode. 6. In the Document settings section click on the Advanced tab. 7. If your scanner and application supports compressed file transfers, the Compression option will now be available.