Scanner/english

In Room 334 there is a PC with an attached DIN A4 color scanner (Epson Perfection 1670) which is freely accessible for IMT employees.

The Scanner-PC may only be used for scanning, so please do not install any other programs! And please don't change the screen properties!

Normally this PC should be off. When you switch on the PC, monitor and scanner are also switched on automatically. You can log in with your usual username and password.

Please shut down the PC after scanning.

The scan PC's local directories are not accessible over the network, so you need to store your files on J:\Transfer or your U-drive so that you can access them later from your office PC.

Note that with this scanner, the originals must be placed in such away that the top edge of the document points to the front!

Please use the Adobe Photoshop program for scanning. The scanning process is started via Datei --> Importieren --> Epson Perfection 1670.... This starts the Epson Scan program.

By default, the scan program is started in Professional mode, as this is the most flexible and allows most settings. First you should start a preview scan, so that you can see the current image in the preview window. Afterwards you should select the section to be scanned with the mouse. Here you can also have the section automatically determined by clicking on the symbol with the green square and the hatched triangles in the frame area of the preview window. Afterwards you can move the displayed frame with the mouse or change its size.

The following settings for the scan program are recommended:

Vorlagenart: Aufsichtsvorlage
If you want to scan negatives or slides, please contact U.Klein or D.Gutjahr!

Dokumentenquelle: Vorlagenglas

Automatische Belichtung: Foto
For printed original you should select Vorlage here!

Bildtyp: 24 bit color (for color scans) / 8 bit grayscale (for b/w scans)
48 bit color and 16 bit grayscale scans allow in principle higher quality scans. However, such files can only be processed with only a few programs (e. g. Photoshop). These types of images are rarely really necessary!

Auflösung: 200 dpi
Since all printers require at least 4x4 pixels to display grayscale or colors by dithering, a resolution of 200dpi is normally sufficient for a normal printer. This specification is only the scan resolution if the target size is equal to the original size (see next point)!

Zielgröße: Allows you to specify the desired output size of the scanned image. The actual scanning resolution is then automatically selected so that the scanned image will have the desired size and resolution (recommended: 200 dpi).

In the Korrekturen section, color and brightness corrections can be made during scanning. However, it is recommended to make such corrections - if necessary - afterwards in Photoshop, because you have much more possibilities here.

Scannen starts the actual scanning process. When the image is completely scanned, the scanned image appears in a editing window in Photoshop. You can then scan another image. If this is not desired, you have to close the scan program before you can continue working with Photoshop. You can then save the scanned images in Photoshop with Datei -> Speichern unter on your J:\Transfer folder or on your U-drive. Make sure that you select JPEG for color images and PCX for black-and-white images. By default, Photoshop saves in its own Photoshop format so that you won't be able to open it in other programs.

Below are the most important tips for image editing in Photoshop. Please always leave the printed instructions at their place on the table next to the scanner!

The basic features of Photoshop:

Freistellungswerkzeug: Crop the image. You will find the tool icon (2 nested right angles) as the 3rd symbol from the top left of the toolbar. You can then use the mouse to pull up the section and then right-click into the drawn rectangle to select cropping.

The most important tasks for image correction are hidden under Bild -> Einstellungen.

Bild -> Einstellungen -> Tonwertkorrektur: By moving the sliders left and right directly underneath the displayed tonal value histogram you can better exploit the contrast range. The changes in the image are displayed online, so that you can easily control the effect. With the slider in the middle you can lighten or darken mid tones. Often a click on the Auto button delivers quite a decent result.

Bild -> Einstellungen -> Arbeitsfläche drehen: Allows you to rotate the image, either by fixed amounts or by entering any value. If you press the left mouse button briefly on the pipette symbol in the lower right half of the toolbar and then select Messwerkzeug in the pop-up menu, you can then drag a line in the image with the mouse button held down. If you then call "Arbeitsfläche drehen", the angle is already entered as the value required to rotate this line to the nearest X or Y axis. This makes it very easy to straighten twisted images when scanning!

Please contact D. Gutjahr or U. Klein if you have any questions about the scanner or scan program. We will gladly provide you with information!