User manual EPSON PERFECTION 1670 REFERENCE GUIDE

[. . . ] Neither SEIKO EPSON CORPORATION nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product. SEIKO EPSON CORPORATION and its affiliates shall not be liable against any damages or problems arising from the use of any options or any consumable products other than those designated as Original EPSON Products or EPSON Approved Products by SEIKO EPSON CORPORATION. EPSON is a registered trademark of SEIKO EPSON CORPORATION. IBM and PS/2 are registered trademarks of International Business Machines Corporation. [. . . ] For other Pixel Depth settings, the Photo setting takes effect and the Drawing/ Halftone setting becomes irrelevant. 2-14 Understanding EPSON TWAIN Features To print your scanned document when Resolution is set to Drawing/Halftone, select the same resolution setting from the list as you select in the printer driver. To print your scanned document when Resolution is set to Photo, select a resolution between 150 and 300 dpi. If you select a higher resolution, the Photo setting requires longer to print, but does not improve the output quality. The Resolution setting is closely related to the Image Size and Scale settings. If you change them arbitrarily, the resulting image may not be what you expected. The range of resolution values depends on your scanner. To apply the settings you made, click OK. To save the settings you made, type a new name in the Destination Name box, and then click Save. To delete a Destination setting, select the target setting name to be deleted in the Destination Name menu, then click Delete. Unsharp Mask You can select or deselect the Unsharp Mask setting. Selecting this check box improves image sharpness. Understanding EPSON TWAIN Features 2-15 Source and Target image sizes The Source fields indicate the size of the image that is displayed or selected in the Preview window. The Target fields indicate what size the image will be when it is output. Note: The image size values are determined automatically when you scan from the Easy menu. The image size setting is closely related to the Resolution. The eyedropper "picks up" the color from that area, and uses it as the highlight for the entire image. This effect shows up immediately in the preview image. Click Cancel to restore the original image. Understanding EPSON TWAIN Features 2-19 Shadow: The Shadow control allows you to adjust the darkness level of the darkest parts of an image. You can select from 0 to 60 by moving the slider. Click the eyedropper button beneath the slider, and the mouse pointer changes to an eyedropper. Move the eyedropper over the preview image, and click a dark area. The eyedropper "picks up" the color from that area, and uses it as the shadow for the entire image. This effect shows up immediately in the preview image. Click Cancel to restore the original image. Threshold: Available only when Pixel Depth is set to Black & White and Halftone is set to None in the Image Type dialog box. The scanner scans gray shades as either black or white using this setting. You can select from 0 (lightest) to 255 (darkest) by moving the slider. Tone Correction 2-20 Understanding EPSON TWAIN Features Click the Tone Correction button on the Advanced menu to view the following dialog box. Note: The Linear Tone Correction settings are used when you scan from the Easy menu. [. . . ] A system of commands that allows you to control image scanners from your software. ESC/P Abbreviation for EPSON Standard Code for Printers. A system of commands that allows you to control printers from your software. gamma Gamma is a value that expresses the relationship between the input and output of a device. By adjusting the gamma, the brightness of the mid-tones of an image can be changed without affecting the shadows and highlights. grayscale Images represented with various shades of gray in addition to black and white. halftoning A method of reproducing images with patterns of dots to improve the quality of the output. home position The position at the rear (nearest the cover hinge position) of the scanner where the carriage rests before a scanning operation. imagesetter A device that uses computer files to produce high-resolution text and graphics output on film or paper. These are usually found in service bureaus and printing companies. impact dot printer A printer that transfers ink onto the paper by striking an ink ribbon with a number of small pins. ink jet printer A printer that transfers ink onto the paper by spraying the ink through a number of small nozzles. 2 Glossary interface A piece of hardware, a method, or a standard used for connection between or among computer devices. line sequence A type of color scanning that separates primary colors line by line. [. . . ]