The trimming feature is an easy way to remove unwanted margins or borders from your pages. While similar to cropping, trimming is an automatic process. All areas to the left, top, right and bottom of the document where the color falls at or below the chosen intensity level are removed. As soon as a color that is above the intensity level is found, trimming on that side stops.
A common use of this feature would be to remove the lighter shades of grey on scanned images, as we do in the example below. This also works with color images as Raster Image Printer will use a greyscale representation of the page to determine trimming.
1.Select File - Print from your application.
•In the printer field choose the Raster Image Printer 11.0 from the drop-down list of printers.
•Click the Properties... button to open the Raster Image Printer properties dialog box.
2.Click on the Page Processing tab in the Document Properties dialog to access the trimming options.
•Enable any one or all of the Left, Top, Right or Bottom check boxes to trim that side of the document. For our example, we need to trim all four sides of the document so all four check boxes have been checked.
•Click and drag the intensity slider to choose the level of grey to remove. If the slider is all the way to the left, or White, only pure white pixels will be removed. For a scanned image, the border is generally not pure white so the Intensity should be moved to the right. The darker the grey on the border, the further towards Black you will need to move the slider.
If you were printing a document with a white border directly to the Raster Image Printer, you could leave the Intensity slider on White to remove the border.
If the slider is moved all the way to Black, then trimming operation would effectively remove the entire document. In these cases, the trimming operation is not performed.
4.Click the OK button on the Document Properties dialog to save the trimming options.
5.Click the OK button on the Print Dialog, or the appropriate button on your application's print dialog, to send the document to the printer.
6.Choose where to save your JPG image from the Save Image File dialog.
•Use the Save in: field to choose a folder to store your JPG image. Your Documents folder, or any folder your have chosen on the Save tab will have been selected for you by default.
•In the File name: field, enter a name for your JPG image. A default name for your file has been filled in based on the name your application used when it printed your document to the Raster Image Printer. Here we have changed the file name to TrimmedJPG.
•The Save as type: drop down list can be used to change the output file type if needed. In this example we are leaving it at the default of JPEG (*.jpg).
•Click the Save button to create the file in the folder you chose.
7.Open the new JPG image in your Image viewer.
•The file no longer has the Top margin. There is still a strip of margin at the top as the page was originally skewed (placed on an angle) when it was scanned as an image.
•The Left, Bottom, and Right margins are still intact due to the black strip that runs across the bottom of the scanned image in the original file.
8.This is fixed by combining the Cropping Margins features to crop the black strip from the bottom of the page with the trimming features to remove the borders.
9.The JPG image created with both cropping and trimming enabled is shown below. As much of the margins (white border) as possible have been removed. The skew of the scanned page does mean that some margin is left.
•A side effect of trimming has been a change in page size. The original document was a scanned Letter-sized page, 11.00in x 8.50in. The cropping and trimming resulted in an document with a page size of 10.01in x 7.64in. If you need to remove the margins, and also keep the original page size, you need to combine the above steps with the steps outlined in Using the Copy To Image Features.