Image Transfer - Oh Happy Clay
Transcription
Image Transfer - Oh Happy Clay
Hansen-Gard The Ceramic Surface: Image Transfer The ceramic surface is rich with possibility and limiting students to a few glazes is restrictive. I hope that this section on image transfer will open up the world of surface for you and your students. Linoleum Block Linoleum blocks used for printmaking can always be used on clay. You carve the block and press relief into the clay. You can also use the bray to roll underglazes on the print block and then lightly press on the clay. The linoleum provides a bendable material that can be pressed directly into slabs that can be later transformed or rolled around an already developed form. This is a simple technique that could be used at any grade level. Stencils Stencils provide a simple way to transfer designs onto clay. Students can cut out stencils in paper providing a one-time use transfer (Figure 1 & 2). I recommend coating the paper with acrylic gel medium before cutting so you can get several more uses out of it. I suggest small designs for this kind of work because the larger stencils will be hard to mange and bend over forms. Also, tyvec or acetate last quite a bit longer than paper but will be a bit more costly. If you can collect enough used priority mailers you can do it all for relatively cheap! Figure 1 Image Transfer: paper stencil Hansen-Gard The Ceramic Surface: Image Transfer Figure 2 Image Transfer: paper stencil Stamping Stamping offers a plethora of opportunities ranging from making your own stamps out of clay or potatoes, burning designs in sponges, to simply using a collection of found objects that can be pressed into the clay. Nonfired Full Color Decals Lazertran is a product that allows you to produce your own full color decals with either a color copier or inkjet printer. I recommend creating your images using Photoshop if accessible or in a Word document. Use as much space on your paper as possible because the paper is expensive. Once printed, first trim as close to the edge of the area you want to transfer and applying water to the glaze fired clay surface where you hope to transfer. Once the soaked decal is ready the decal papers will begin to separate and will easily slide apart. Place the image on the ceramic surface and adjust as needed. This process is simple in that it does not require a separate firing, but it also can be frustrating as the finish can be easily damaged. The supplier recommended covering the surface with turpentine in a well-ventilated area for a more permanent finish. You should not use Lasertran decals on a functional ceramic surface because they are not food safe. This can be used to transfer to anything so use your imagination! Hansen-Gard The Ceramic Surface: Image Transfer Inkjet Transfer Inkjet transfer is similar to the Lazertran. It is also a non-fired type of image transfer that can be transferred to almost any surface. I do not recommend functional wares. Bel Decal can provide the paper needed for this process. After printing it is suggested that you spray a clear coat of spray paint, transfer the decal, and spray again for a more permanent transfer. Commercial Decals Commercial decals are readymade and designed. You have no choice in the content and design, but you do have a choice in the arrangement and placement of the designed paper by cutting them up and using them in a collage manner. I recommend In Star Decals or Chinese Clay Art for purchasing these. These fire to about cone 018. Laser Decals Laser decals are printed on decal paper using a laser printer. The paper is available for purchase from Bel Decal. Decals can be personally designed using Photoshop, Illustrator, or images could be imported in any document. These decals print on 8.5x11 paper from any laser printer with ink that contains iron oxide. The decals should be cut around the image and placed into water. When the paper and the decal begin to separate slide the decal off onto the ceramic surface. Position the decal in place and remove and air bubbles under the surface. Let the decals dry over night before firing. I highly recommend testing this before you do this with a class because the printer needs to be high in iron for the decal to work. These decals should be fired anywhere from 4-6 cones or 230 degrees Fahrenheit below the firing temperature as the glaze. Laser Printer Transfer Laser print transfer with slip is an exciting and easy process with quick results. Any laser print or photocopy machine should do the trick. You need to prepare some deflocculated slip (To deflocculated the slip add a small amount of Darvan or sodium silicate until it is thinned out) , thinned under glaze, or one part mason stain, one part gersley borate/ bentonite. You can purchase Darvan from any ceramic supplier. A few common ones are Brent, Laguna, Amaco, or Columbus Clay. It only has a life span of about a year, so only buy it in small amounts, as you will not need much. (1/2 pint) The transfer process includes using a paintbrush to apply the slip/ under glazes. If the liquid is the right consistency, it should absorb in the paper and be repelled off the black printed area (Figure 3). This is a great process for patterns and images. Try making the inverse of an image and see what it looks like both ways. If you become an expert at this, try it with multiple layers and colors see what you can come up with! Hansen-Gard The Ceramic Surface: Image Transfer Figure 3 Image Transfer: laser printer Screen-printing Figure 4 Image Transfer: screen-printing Screen-printing is an advanced but fun process worth exploring if you have facilities for doing it. You can find supplies at multiple places online. I have found silkscreensupplies.com to be reliable. If you have screens, test them out and see what results you get. A 110 mesh 24x20 inches with a metal frame works best with slip. You can design or draw any image on the screen. When designing an image, Photoshop works great so long as you convert your image to black before you print. If you print on paper, the exposure time will be quite a bit longer. I found it easiest to print on white transparency paper if you have it available. The exposure time for paper is 250 light units and 80 light units for transparency. When printing you can print right on the clay, newspaper (Wall Street Journal), Hansen-Gard The Ceramic Surface: Image Transfer or even better, Tyvec. The transfer process involves painting slip on both surfaces, waiting for it to lose its sheen, and then pressing them together (Figure 4 & 5). For this portion your slip should also be deflocculated. For every 1,000 grams of dry material, add 1/4 tsp. Darvan. I recommend the flexible red rib from mudtools.com to smooth out the surface. Once the smoothing is complete, pull apart the screen and your image will have transferred. Pull slowly so that if the image hasn’t completely transferred, you can place it back on and press again. You may have to spray it with water and rub it again with the rib. Materials that work well through the screen are thick slips or thickened underglazes (you can thicken them by pouring them out on glass and blow drying them for a few minutes). If you do not have the facilities then this would pose quite the task and I recommend the ezy screen that I will talk about next. Figure 5 Image Transfer: screen-printing Hansen-Gard The Ceramic Surface: Image Transfer Ezy Screen Ezy screen is a simpler form of screenprinting that could be used in the high school classroom. It does not require a darkroom and uses natural light to burn the image. The cost of the screen is costly as they tend to be about $8 each and can be purchased from ezscreenprint.com. Bibliography & recommended readings Petrie, K. (2011). The new ceramics: Ceramics transfer printing. Westerville, OH: The American Ceramic Society. Scott, P. (1994). Ceramics and print. Philadelphia, PA: University of Pennsylvania Press. Wandless, P. (2006). Image transfer on clay: Screen, relief, decal & monoprint techniques. New York, NY: Lark Books, A Division of Sterling Publishing, Co., Inc. Online Resources: www.beldecal.com www.ezscreenprint.com www.instardecals.com www.chineseclayart.com www.silkscreensupplies.com www.mudtools.com www.clayprints.ning.com Hansen-Gard The Ceramic Surface: Image Transfer Artists of Interest: Lesley Baker www.lesleybaker.com Sandy Blain www.mudfire.com/sandra-blain-constructed.htm Richard Burkett www.richardburkett.com Jason Burnett www.jasonbigeburnett.com Andrew Cho www.theandrewchoartshow.com Charlie Cummings www.claylink.com/charliecummings/index.html Israel Davis www.israeldavis.com Erin Furimsky www.erinfurimsky.com Andrew Gilliatt www.andrewgilliatt.com Rain Harris www.rainharris.com Anna Calluori-Holcombe www.annaholcombe.com Meredith Host www.meredithhost.com Les Lawrence www.leslawrence.com Kelly McKidden www.kellymckibben.com Tara Polansky www.tarapolansky.wordpress.com Elizabeth Robinson www.elizabethrobinson.com Kelly Schnorr www.kellyschnorr.com Paul Scott www.cumbrianblues.com Nan Smith www.nansmith.com Victor Spinski www.victorspinski.com Paul Andrew Wandless www.studio3artcompany.com
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