Handwritten scanned to Tiff - DPI/pixel size requirements for printing

Namaste"

I am planning to have a book printed sayings my teacher in his own handwriting in his journal.

The lyrics were written in ballpoint pen and twenty years old.

We their digitized by a scanner at hand gray in 300 dpi.

Since I cleaned up and cropped, so the standard 300 dpi is no longer there.

Because they are old, made with pen to ball and not very thick, it is not realistic to take 'out' of their context, so they're on a white background.

When I watch the news, scans, it says 400 points per inch (writing and white background), but when I look at what the pixel dimensions say, they are all less than 1 MB, mostly in the 300 k of Lombardo.

I don't understand this.

I was told that smaller 240dpi.

What is the relationship between the dimension in pixels and dpi? And how do you know that's enough?

Can anyone help clear this up for me?

When I take to the local printer and run them on their computer, for the test, the images seem fine.

I use PSCS3.

Thank you.

A girl-

When I scan art of the linework such as signatures, handwriting, drawings to the pen, etc, I updated the scanner for 2400 PPI print size, mode 1-bit/lineart/monochrome/NB (your scanning software should call one of them, the important bit is that it is NOT grayscale).

The reason for this was released most imagesetters and chemistries 2400 or 2540 DPI, scanning so at or near the resolution output provides the best appearance. If you are out on a laser printer or other office device you can scan its output resolution, 600 for example, but a file of 2400 PPi 1 - bit is not big at all then why not 'future proof' your scans so if you get them professionally out later they are at maximum quality.

Using a 1 - bit file removes all softened that you would with a grayscale image, and 1 bits can be easily made to have a transparent background so that you place them in a layout are a piece of cake.

My best advice for you is to determine your output size, then re-scan to 2400 DPI to the appropriate size.

For your other question, pixel dimensions is the number of pixels in the image and is the only true measure of the resolution of a digital image.  Until that you determine the size of print DPI (pixels per inch) is not relevant, and the PPI will change according to the size of output: If you have a picture of 2000 pixels wide and you print 10 inches so your PPI is 200 (2000 / 10). If you export to 5 inches, the PPI is 400 (2000 / 5).

DPI (dots per inch) refers to the resolution of an output device. Both are commonly used to mean the same thing, but they are not synonymous - digital images contain only pixels, never points and output printers with points, never of pixels.

Tags: Photoshop

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