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In this movie, I'll show you how to create a bleed, which allows you to trim your image so it fills up the entire piece of paper on which it's printed. Now, as you may recall, my printer doesn't allow me to print all the way to the edge of the page. I go up to the File menu and chose the print command, then I can see that non imageable area represented as a series of diagonal lines. However, I can still trim the paper away so only the image remains. I would start by turning off all these Printing Mark checkboxes except for the first one, Corner Crop Marks.
And then I would print the image, and either use a paper cutter or a ruler and an X-Acto knife to cut along these trim lines. Problem is I don't have any room for error. So chances are very good that I'm either going to cut away some image that I don't want to lose or I'm going to leave behind a little sliver of page white. Neither of those options are really acceptable. Which is why we're better off creating some wiggle room in the form of a bleed. So let me show you how that works. I'll click the Done button to close the print dialogue box. Then notice here down at the bottom of the stack, this layer called Original Image, it is an independent layer that's actually a little bigger than the canvas size.
So I'll press Ctrl+minus, or Cmd+minus on a Mac, to zoom out, so that I can see the entire image. And then I'll go out to the Image menu and Choose the Canvas size command. Now the best way to work when you're adding a bleed is to turn on the Relative check box so you're working from the existing size of the image. One of the standard bleed sizes in the States is one pica, where a pica is equal to one sixth of an inch. So I'll switch my unit of measure to Picas. And then I'll go ahead and change both the width and height values to two. Because I want to Pica all the way around.
In other words, the width of 2 Picas gives me a Pica on the left and a Pica on the right. A height of 2 Picas gives me a Pica at top and a Pica at the bottom. Now I'll go ahead and click OK and you'll see the image expand in the background. Now do I identify that area as a bleed. We go on to the File menu, and choose the Print command. And then you want to expand this section right there. Functions, and you'll see a Bleed button, go ahead and click on it. Unfortunately the Bleed dialogue box includes just three units of measure, inches, millimeters, and points.
A point is 1 12th of an inch, so in other words 12 points fit inside of a pica. And so that's what I'm going to enter in this case. Is a width of 12 points and that'll give me a pica of lead all the way around. And what I want you to do is watch the trim marks on the corners of the image. As soon as I click OK, they go ahead and shift inward. And now when I cut along the trim lines there's no chance that I'm going to leave a little bit of white paper behind. So, now that I've established my bleed, I'll go ahead and click on the Done button in order to update the image.
I want to show you one more thing. I've gone ahead and created an extra layer inside this image called printing marks. I'll turn it on. And it shows you what all the printing marks look like. The problem is that the canvas size is too tight for us to see the printing marks So we need to reveal the entirety of this image by going up to the image menu, and choosing the reveal all command. And that'll essentially uncrop the image so that we can see everything that this layer has to offer. And you'll notice there are trim marks, and sure enough, there scooted a pica into the image. There's the label at the top of the image, and notice that it does indeed convey all the information in the title tab.
Even down to the Zoom ratio. And then finally, down here in the bottom left corner we see the description. All right, just so we can see things better, I'll press Shift+F in order to switch to the full screen mode and I'll zoom in a little bit. And that's how you work with printing marks, including trim marks, which allow you to identify a bleed here inside Photoshop.
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