When it comes to t-shirt printing, the best artwork is vectored spot colors. What are vectored spot colors you ask? Before we break that down for you, it is important to point out what the opposite of vectored spot colors is. This would typically be a photograph or jpeg that has hundreds or possibly thousands of colors in them. The whole premise for this post is because we get a lot of requests to print photographs or jpeg’s onto t-shirts or hats.
Now back to vector graphics. They are defined Wikipedia as:
“the use of geometrical primitives such as points, lines, curves, and shapes or polygon(s), which are all based upon mathematical equations, to represent images in computer graphics.”
In more simple terms, vector graphics are simply creating artwork from scratch in programs such as Adobe Illustrator or CorelDRAW. The best feature about vector graphics is that you can scale them up or down in size, and they never lose their quality. This is very important as it pertains to screen printed t-shirts, because there is a lot of resizing involved with getting the artwork ready for print. If you magnify a vector graphic, you will always see the sharp edges and a very clear image. As you begin to magnify a photograph or jpeg, the quality starts to deteriorate, and everything begins to blur. Wikipedia has a really cool image of what I’m describing here:
http://en.wikipedia.org/wiki/Vector_graphics
With that description and illustration of what vector graphics are, coupled with the fact that screen printing T-shirts revolves around single ink colors… everything should begin to come full circle. The “screen” in screen printing actually represents one screen per color in the artwork printed. So you can imagine that a photograph with thousands of colors should be impossible to print on t-shirts. Right? Wrong.
Printing photographs and jpeg’s on t-shirts is possible with four color process. What is four color process? we are going to leave that explanation for another blog post, but for now understand that it is a very inexact science and considered lower quality most of the time. Not to mention, four color process can get quite expensive as well.
On the flip side, printing four color process on paper can look amazing. So when we are presented with a request to print something on t-shirts that has already been printed on paper, we usually have reservations. This was the case recently, when we were quoting on a t-shirt printing job and the artwork supplied was from a poster for an event coming up. The print on the poster was from a painting that was relevant to the event. Here is what that artwork looked like:

We were faced with a few dilemmas when we viewed the artwork. The first being what we prefaced earlier, that the artwork would need to be accomplished with four color process. The second being that the customer was on a budget. The final being that the customer wanted dark t-shirts and four color process is even harder when printed on dark t-shirts. As we spoke with our client, we explain the situation and suggested converting the artwork to a single vectored spot color. This would require a lot of time in artwork, but would guarantee a great print at a low price. Here is what we were able to do when converting a jpeg to vector:

Our client was very pleased with the vectored t-shirt design and loved the price. Here is a picture of what the final print looked like:

If you learned one thing from this post, please understand that there are many options for printing t-shirts and those options are worth exploring when it comes to complex jobs. Please feel free to contact us at any time you have a t-shirt printing job no matter how big or small, hard or easy.