
printers that fit into the world of iPods, cell phones and paper-thin computers, and concept designers are stepping up to the plate with incredible visions of the future. Tiny stick printers that can go anywhere, printers that use pencil stubs or even coffee dregs in lieu of ink cartridges, printers that can erase and reuse paper. Some designs go further still, transcending mere ink to produce three-dimensional objects and even food.
Printing with a Pencil Stub

(images via: yanko design)
The problem with printers is, if you make a  mistake, there’s no way to erase it. You simply have to start all over  again, wasting both ink and a sheet of paper. So why not use graphite  instead? This creative printer concept by Hoyoung Lee does that and  more, using the nubs of old pencils that would otherwise be thrown away  and even offering a built-in eraser for the second go ‘round.
Pencil Printer II

(images via: yanko design)
Printing with Colored Pens

(images via: yanko design)
Nobody likes buying printer cartridges, and  it seems like we go through them so quickly. So it’s nice to see  innovation that drains the last drops of ink out of colored ball point  pens as a supplement to regular printer ink. The design may not work  as-is, since ballpoint ink tends to be thick, but it’s an interesting  idea.
Printing with Tea Dregs

(images via: core 77)
Coffee and tea are loaded with pigment and  in fact often used as dye, so it makes sense to use them as a natural,  free, recycled form of ink. This printer would allow users to place  coffee or tea dregs into an ink case, eliminating the need to constantly  purchase costly cartridges.
Scan-and-Draw Pen Creates Customized Ink

(images via: dornob)
A printer, scanner and pen in one? This pen  makes it possible to write with any color from practically any object  you can find, scanning the color and reproducing it from RGB ink  cartridges. The design obviously has its limitations, considering the  small size of the ink cartridges, but it’s an absolute dream for artists  and could be useful for a range of everyday needs as well.
StickPop Printer is Ultra-Portable

(image via: ubergizmo)
Remember the days when we were all chained  to our desks while on the computer or talking on the phone? Gadgets are  going portable in ways we never thought possible a decade or two ago, so  why not printers too? The StickPop printer concept is battery-operated,  prints via USB cable and is small enough to fit in your laptop bag.
PrePeat Rewritable Printer Uses No Ink

(image via: engadget)
The PrePeat takes all of the above concepts  and goes one step further: eliminating paper from the equation. This  eco-friendly printer uses special paper made of PET plastic that can  reportedly be used up to 1,000 times each. The printer, which uses no  ink or toner, automatically clears used sheets and reprints. It’s a cool  idea, but the cost is definitely prohibitive for now at $5,600.
Mini Giant: Crawling Robotic Large-Scale Printer

(image via: core 77)
Want to print absolutely anything, anytime,  anywhere? The combination of ZINK paper, which has colored dye crystals  embedded in it, and the “Mini Giant” crawling printer can produce  practically anything – even large-scale posters. The Mini Giant propels  itself across a piece of ZINK paper to create a print using heat-based  technology.
Self-Replicating 3D Printer

(images via: dornob)
If you have even the slightest fear of  computers taking over the world, this self-replicating 3D printer may be  fodder for your nightmares.  The RepRap can manufacture complex  three-dimensional objects… including copies of itself. But, Terminator  implications aside, this thing is pretty cool: it turns your home office  into a mini factory by simply downloading plans and then molding bars  of plastic into various household goods.
Using a Printer to Make… Food?

(images via: dornob)
Considering that some printers can  replicate, it’s not too crazy to imagine 3D printers that can cook and  assemble food at the push of a button. Some futuristic food printer  concepts imagine gadgets loaded with ingredients that can be whipped up  into practically anything imaginable, though it probably wouldn’t taste  much like the food we enjoy today.
This Printer Concept is Toast

(images via: dornob)
When it comes to printing on toast, many of  us ask “why?” but just as many respond “why not?” While toasting a  design onto bread is pretty impractical, it definitely makes this boring  breakfast staple a little bit more fun. While the ‘Zuse’ toast printer  (top) is more about form, the roller toaster is actually functional. It  doesn’t print an image on the bread, but works like a printer, passing a  piece of bread from one side to the other.
Taking Printers on the Road

(image via: yanko design)
If printers can create designs on paper,  why not change up the surface? Road workers could get a lot more done by  letting this solar-powered Road Printer do most of the work with  pre-programmed templates and a jet-spray paint cartridge that moves from  side-to-side between the wheels.