If you can’t see through the ink, try lengthening your exposure times. Check out Speedball’s Screen Printing Instruction Guide to learn more about which approach is the best fit for your screen printing project. Did your stencil look alright on the screen, but problems emerged during printing in the form of wavy or jagged edges? If you are using a DUAL DIAZO you will need to mix the Diazo into the emulsion one to two hours prior to coating screens. As soon as the positive is removed, you should start washing it out (under normal indoor lighting conditions, most emulsions won't develop in a matter of minutes while you're getting to the sink, etc., but don't dawdle too much, and certainly don't remove the positive, and plan to come back to wash out the screen at another time). That you are doing all parts of the emulsion and exposure process in a light safe environment with NO outside or bright light. The two most common culprits for inadequate exposure are transparent positives or too short exposure times. An unevenly coated screen can cause issues when you try to reclaim the screen. Dry the screen with fabric or foam piece For more detail, watch the video and learn how to clean the screen from emulsion visually. ( Log Out /  This can be tricky because it mimics over exposure, in fact the emulsion is just too thick and is really under exposed, parts of the image may wash out and finer parts may not rinse out altogether. The thin spots expose faster and cause the image to not wash out due to over exposure. The screen needs to be thoroughly washed out and each moment it dry’s, the more permanent it becomes. Common Screen Printing Exposure Issues and How to Troubleshoot Them, Types of fleece: advantages & disadvantages, How to Use Post-Exposure to Create Durable Screen Printing Stencils, For service request related information, please contact our. A. Washing out and developing a Dual Cure emulsion is somewhat easier than with a pure photopolymer emulsion. I was watching the catspit videos and he stated that you should not … Dry and clean. A permanent stencil will remain on the screen if the photo emulsion is not cleaned off immediately after a print run, according to Reuels.com. After exposing the screen, you spray down the screen with water, washing off the emulsion only where … This can cause a transition in the exposure line, rather than a hard stencil line. Our Privacy Policy, Wicked Printing Stuff, your home for screen printing equipment and supplies – FAQs. There are sometimes where you may need some extra coats e.g. We WANT to help you, whoever you are, from hobbiest to professional business. Posted In: SCREEN PRINTING EXPOSURE UNITS, SCREEN PRINTING TECHNIQUES, Anatol Equipment Manufacturing Co. 919 Sherwood Drive Lake Bluff, IL 60044 Phone: +1(847)367-9760 E-mail: info@anatol.com, Phone: 847.367.9760 Fax: 847.582.1854 Visit our sales page E-mail: sales@anatol.com, For service request related information, please contact our service support or email us at service@anatol.com. I exposed this screen for about 40 minutes with a 300 Watt bulb at 16 inches. After both sides are wet, you could use a high powered spray hose, in my … That you are not coating your emulsion too thick. When coating screens emulsion needs to be even on mesh. This is done under regular tap … When coating screens emulsion needs to be even on mesh. Seeing your newly exposed stencils wash down the drain can be extremely frustrating. Wash Out the Screen. In washing off the emulsions, it is best to use 1,000 to 1,500 PSI (pounds per square inch). Please log in using one of these methods to post your comment: You are commenting using your WordPress.com account. When your stencils won’t wash out, you’re having the opposite problem; your emulsion is over exposed. Photo emulsion allows you to screen print very detailed designs over and over again. I am using Chromaline ChromaBlue emulsion, one coat of both sides of the screen, I let the screen dry overnight, and expose it for 2 minutes to the halftone image. printing transfers and printing white onto a dark garment but you will need to adjust the exposure time. Finally, you lay the screen on your t-shirt, other fabric, or paper, spread ink on the inside of the screen, and press the ink through the screen. Hot water is not very gentle on fabric, and ultimately, it destroys it. First, there’s no reason why you should wash your clothes in hot water, unless they’re hotel or hospital towels and sheets, in which case the hot water helps disinfect them. The emulsion was not cured. 3. I used an air hose to dry the screen after washing out uncured emulsion I had to purchase a small electric pressure washer to help remove the emulsion. G. Thick place will expose slower causing image to break down and wash out. Dry the screen with fabric or foam piece For more detail, watch the video and learn how to clean the screen from emulsion visually. Fortunately, when stencils wash away, the problem is clear: Your screens haven’t been adequately exposed. If you leave it too long or too short then it may not wash out properly. If you are unclear on exposure times please feel free to ask us. ( Log Out /  You can get more than one exposure time on a single screen. the clear areas, of the film positive than the maximum density or solid areas of the film positive. Are your screens giving you problems? Emulsion Not Washing Out problem. Tips for Washing Screen-Printed Shirts Properly 1. When you can completely see through your image on the screen, then it is completely washed out and has been properly exposed. The ones with the pre-mixed sensitizers will not take time to apply. An excess of UV light reaching the stencil causes over-exposure. Emulsion … This includes determining the exposure, light sources and washing out the stencil in the washout booth. Thick and thin places will cause problems during drying and exposing. This could be due to under exposure, but if you’ve followed your usual, tested exposure timeline and this still occurs, you will have to look for other solutions. The basics of emulsion screen printing; How to prepare and coat your screen ; Basics of textile design and how to create a repeating design then transfer it onto film; How to expose your screen in the UV exposure unit; How to wash out your screen to reveal your design; How to set up your printing area and mix your inks; How to print your design onto fabric; How to reclaim the screen… Place a stopper in a work or utility sink, and lay the screen in the sink. It’s best to have an exposure unit with a timer as well as a darkroom with washout booths and extra … … Sometimes your stencil doesn’t wash away, but your emulsion is left with a soft or “gooey” feeling. If you use textile ink, you can heat … The two factors of exposure are complete cross link, for the most resistance AND how much exposure with each combination of mesh, stencil and exposure before the finest line you want to print closes up. You need to use a darker ink to create your positives. Soft or gooey emulsion. It is more expensive than Diaso emulsion but less expensive than SBQ emulsions. Screen Emulsion Coating Techniques 03-05-2019, 01:16 PM. Developing - Wet both sides of the screen with a strong divided spray of water and continue washing out until all image areas are fully open. ( Log Out /  It can be helpful to test your emulsion’s exposure time: Using a piece of cardboard, cover a swatch on the screen and expose. At Wicked Printing Stuff we pride ourselves on helping our customers. Contact us – Phone: 0161 442 6555 E-mail: sales@inkandsolvents.co.uk. Thicker areas of emulsion won’t cure completely during exposure and will not adhere to the screen completely. One coat both sides should do it, with a nice even spread. The good news is that exposure problems usually can be traced back to a handful of culprits, and checking your exposure times, stencil opacity, screen cleanliness and washout intensity can often save your stencils. If it doesn't wash out, it was exposed to UV energy or heat and cross linked somehow. 2. if I use warm water it starts to come out in about 30 seconds. What is the difference between Serigraphy and Screen Printing? But taking the time to pinpoint your exposure problems can save you frustration and time, speeding along your production process because you waste time trying to find ways to make a subpar screen work. So rule of thumb is one coat for each side using Dual Diazo Emulsion. The reason for this is simple, most jobs involving fine detail and/or small halftone dots do not require a heavy ink deposit and you want to be able to wash out the image on the screen easily. So rule of thumb is one coat for each side using Dual Diazo Emulsion. Also just to help set the scene, I just bough a bunch of second hand screens and all the bits as I am just starting off, the screens were left with some old (really old) baked on emulsion that took me a solid hour of high pressure washing and some helpful … Once the image is burned in to the emulsion on the yudu screen we need to wash out the unwanted emulsion. Helpful . The emulsion was applied too thickly on the screen and not exposed long enough to overcome the thickness. If some parts of your screen are washing out fine, but other areas are being stubborn, your screen may not be coated evenly. Block part of the image with some rubylith or equalivalent, expose for a time, unblock more, expose more, and repeat for however many times you want to test hen note which time washed out … Also, using water resistant emulsions will allow you to use a power wash — which is important for highly detailed halftones — to wash out your screen. So the exposed part will not be damaged by water now and the unexposed part can be washed out. The contra… That you are doing all parts of the emulsion and exposure process in a light safe environment with NO outside or bright light. So please check out our buyers guide, FAQ’s, product sheets or ring us with any questions. This is often caused by the use of film positives that are not made of optically clear film. The problem is that when I wash off my emulsion I seem to be washing off random spots of emulsion on the screen. If your gasket is too thin, you won’t get good coverage; if it is too thick, you will get a lot of ink spreading. The image on our transparency has blocked the light from transforming all the emulsion into an insoluble material. 3. Wet both sides of the screen with a strong, finely divided spray of water and continue washing out until all image areas are fully open. Add Tip Ask Question Comment Download. B. Dual Cure emulsions retain the properties of the emulsion even when slightly underexposed or overexposed. This can be caused either by softened stencil edges, overly aggressive washout, or using the wrong mesh count. A permanent stencil will remain on the screen if the photo emulsion is not cleaned off immediately after a print run, according to Reuels.com. How thick is your emulsion to begin with? Change ), You are commenting using your Google account. Hey everyone, I've been having trouble with washing out the emulsion after exposure to a halftone image. 4. DIAZO PHOTO EMULSION & SENSITIZER The photo emulsion method of screen printing allows artists to create a photographic stencil featuring highly-detailed images. When exposed and washed out correctly, a properly coated screen is going to create a good “gasket” for your ink. Image by threads_screen_print . This includes mixing your emulsion, coating your screens, drying screens, exposure, and washout. If the emulsion remover is not working, soak the screen in water for a few seconds. Can you see through the black ink of the positive? If you wash your screen outside, your emulsion will overexpose even the blocked out areas. When the emulsion overall seems sturdy after exposure, but small pieces wash away during washout or flake off after the screen is prepared, inspect the surface of your emulsion. Where the light is blocked (ie where your black image is placed) the emulsion remains water-soluble. Age of screen - if diazo was mixed in you have 3-4 weeks of sensitivity, after that it may be hard to impossible to wash out image. I was wrong! The photo emulsion method of screen printing allows artists to create a photographic stencil featuring highly-detailed images. Consider Your Environment and Where You Wash Out Your Emulsion. With this, you can be able to blow the emulsion out of the screen accordingly. The first common mistake is there is not enough water pressure that will remove the emulsions. Is it old or outdated? 4. That your film positive is very opaque and dark. Usually I clear the screens with remover and pressure washer, then degrease it with dish soap and dry scrub it to abrade the mesh before applying a new coat of emulsion. First, there’s no reason why you should wash your clothes in hot water, unless they’re hotel or hospital towels and sheets, in which case the hot water helps disinfect them. Knowing how to troubleshoot the most common exposure problems can help you nip these issues in the bud, helping you to avoid a great deal of frustration in your screen printing shop. This can be tricky because it mimics over exposure, in fact the emulsion is just too thick and is really under exposed, parts of the image may wash out and finer parts may not rinse out altogether. Emulsion is easy: If the emulsion washes out - it wasn't exposed to UV energy. Enter your email address to follow this blog and receive notifications of new posts by email. First, always be careful not to let your reclaiming solution dry on your screen. F. Thin places will expose faster causing image to not wash out from over exposure. 2 people found this helpful. Now wash out half of the unexposed emulsion with a pressure washer and half with a garden-hose nozzle under regular tap pressure. Old emulsion can pinhole during the exposure process. When you place the dried screen over the drawing and expose the whole thing to strong light, the emulsion will harden where the light hits it, but the drawn areas will block the light. Carefully look at the colour of the emulsion. Continue this process until you’ve tested several times, then wash the image away. You will then want to follow the below instructions: 1. If you print out a design on transparency paper, place it on top of the screen and expose it to light…..the photo emulsion will expose and become permanent on the screen except for where the design blocked out the light. April 2, 2018 / 0 Comments / by Holly Best Tags: how to wash out emulsion , screen print , silk screen printing Share this entry A haze of emulsion left in the mesh is sometimes noticeable on the side washed out with the garden hose, but not on the pressure-washed side. If you coat your screens to thick they may not wash out! This includes mixing your emulsion, coating your screens, drying screens, exposure, and washout. Inks, speciality printing, print locations, durability, etc. Edges also can become softened, or take a sawtooth appearance, if you are being too aggressive when washing out your screens. Suggestion, if you have a screen that is being stubborn but do not have a pressure washer, take it down to a local car wash, put a quarter in the machine, and wash away. If that’s the case, you likely will notice a softness, or gooey texture upon washout, on the squeegee side of your screen, the side that wasn’t exposed to UV light. G. Thick place will expose slower causing image to break down and wash out. These first few moments are crucial to the entire process. Ink is drying in the screen If the ink is drying in the screen as you print and affecting the quality of the print, … You Can Use Hardeners, But … Step 4: Tape Up Screen. Change ), You are commenting using your Facebook account. A properly exposed and developed screen will not leave residues on the squeegee side. This question is taken from our FAQ’s. Now wash out half of the unexposed emulsion with a pressure washer and half with a garden-hose nozzle under regular tap pressure. Rinse Out Procedure: One should always be more concerned with the minimum density, i.e. After exposure, the screen is washed out. That you are not … That’s why the glass is so important. DIAZO PHOTO EMULSION & SENSITIZER. Emulsion issues may also be addressed here. Always Use Cold Water. 3. 2. These areas will not harden and after a 7-minute exposure you will wash them out with water. Apply emulsion remover spray to remove the emulsion completely from the screen. The thick spots expose slower and cause the image to break down and wash out. The areas that have been set by the UV light do not wash away but the black areas of the image do. Rinse both sides of the screen and dry thorou- ghly before use. Sensitising and Mixing - MagnaPrint® Screen Emulsion is pre–sensitised during production and does not require mixing. Insider's Tip: When you're washing out the screen on the squeegee side, you don't want to use any sort of pressure. Keep the screen … If your emulsion thickness seems to be up to your standards, you might need to retest your exposure times; in some exposure units, the bulbs will weaken over time, meaning you need to lengthen your exposure time to fully cure your emulsion. Let us check out the best emulsion for screen-printing. I am using Chromaline ChromaBlue emulsion, one coat of both sides of the screen, I let the screen dry overnight, and expose it for 2 minutes to the halftone image. This includes mixing your emulsion, coating your screens, drying screens, exposure, and washout. If the pinholes are minor, you likely can tape up the holes and proceed with your press run. H. After coating dry in a clean rack. If your stencil edges are soft, you may again be looking at the problem of UV light leaking around the edges of your film positive because the positive isn’t being held tightly to the glass. A properly exposed and developed screen will not leave … We don’t sell you stuff and leave you to it. Ive been prepping screens for a while with no issue until i started buying pre mixed emulsion. Exposure issues can create a lot of headaches in your screen printing shop, but fortunately there are some easy steps you can take to prevent them! If the film is not pressed completely against your mesh then you will get light reflection between your positive and your screen which will result in a blurry and not clear image. It will start washing out just fine, but after a few minutes of washing with my power washer on a light setting, the emulsion that is supposed to be hardened starts to crinkle and peel off. You know how important a great stencil is in creating a great screen print. Hot water is not very gentle on fabric, and ultimately, it … F. Thin places will expose faster causing image to not wash out from over exposure. You should see on the screen your design faintly in a different colour to the emulsion. If parts of your screen are washing out fine but thick spots want to stick, you are probably not coating your screen even enough. Turn off light and wash out the soft emulsion. How thick must the emulsion be on the screen? Always Use Cold Water. After rinse set screen aside to dry. Other advantages can be realized from using a pressure washer for stencil development … The thicker patches may wash out … First, hold your film positive up to the light. If you don’t check your screens right after washout, pinholes are another problem that can appear during printing. Wet the emulsion thoroughly and wait for it to start dropping out of the open artwork areas before you wash the screen as normal. When the emulsion spray is applied it needs water spray to wash the screen and enable it to demonstrate the result. Wash Out the Screen. Finally, check to make sure your positives are being held firmly to the glass of your exposure unit. An uneven coating of emulsion results in uneven exposure. Thick and thin places will cause problems during drying and exposing. Tips for Washing Screen-Printed Shirts Properly 1. Rinse both sides of the screen and dry thoroughly before use. For that reason, exposure problems can cause some of the most frustration in screen printing shops. Either figure out a comfortable position in which to hold the screen… Re: Amex emulsion not washing out - heat? If UV light is finding its way around the edges of the film positive, your image won’t wash away. Here gently rinse out entire screen- the emulsion where the image was will completely wash away as well as any excess emulsion that could run into image while drying. Film-if you are using vellum or a xerox machine your exposure may have burnt through the black area of art, lower exposure times or use ink jet film with good black opacity. Here you can discuss issues related to exposing screens for screen printing. When it comes to removing emulsion from your screen, there are a few things to consider. 3.0 out of 5 stars Not … This can be for a number of reasons, here are a few things to watch out for: via Wicked Printing Stuff, your home for screen printing equipment and supplies – FAQs. I have done a step wedge test - my original one in the summer said the ideal time was 90 seconds, but this one I did a few days … The sharp edge deposits less emulsion on the screen resulting in a thin ink deposit on the printed product. Pour the emulsion into the scoop coater. Change ). Pull the screen out of the bleach when the timer goes off. If UV light is finding its way around the edges of the film positive, your image won’t wash away. when washing out the screens with cold water it takes a long time before the emulsion starts coming out. Problem 3. After removing the ink of the artwork completely from the screen, you must remove the photo emulsion to ensure future use of the screen. Copyright © 2018-2021 Anatol Equipment Manufacturing Co. All Rights Reserved. In order to read the screen exposure time, it is important to keep the screen wet. Insider's Tip: When you're washing out the screen on the squeegee side, you don't want to use any sort of pressure. This can be for a number of reasons, here are a few things to watch out for: That you are doing all parts of the emulsion and exposure process in a light safe environment with NO outside or bright light. You will see differences where each step was exposed. Report abuse. Emulsion: Photo emulsion is a substance that you apply to a screen and let dry in the dark. On the shirt side, you may use a pressure washer, but do not get too close because you may wash out some of the image or emulsion. When coating screens the emulsion needs to be even on the mesh. When the emulsion spray is applied it needs water spray to wash the screen and enable it to demonstrate the result. Step 10. When reclaiming screens, make sure you are beginning with screens that have been thoroughly cleaned and degreased with the proper screen printing chemicals. Apply emulsion remover spray to remove the emulsion completely from the screen. That you are exposing your screen for the correct amount of time, which will depend on the exposure system you are using. I am using Ulano orange ultra fast emulsion and having problems washing out the screens. If pinholes are a recurring problem, or appear suddenly in a large degree, you will want to evaluate your exposure process. This means the UV light can set or cure the emulsion in the negative space of the image (the white areas) and doesn’t reach the positive image. If you coat your screens to thick they may not wash out! Here Dave will give you tips on washing emulsion from an exposed screen. Finally, make sure that the glass in your exposure unit is clean. Give the screen a little soak for 30 secs before starting the wash out. Re: Amex emulsion not washing out - heat? Reply Share This Thread: Thread Tools: October 13th, 2009 Oct 13, 2009 5:40:54 PM - … Poor detail or difficulty washing out image • Ensure emulsion and coated screens are handled in safelight conditions only • Ensure a minimum vacuum of 0.66 bar (500 mmHg or 20 in Hg) on vacuum gauge for optimum contact of the positive • Optimize exposure time and use only high quality film positives • Do not store emulsion or coated screen at high tempe-ratures. Wash both sides of the frame and you’ll start to see the design wash out. Change ), You are commenting using your Twitter account. A haze of emulsion left in the mesh is sometimes noticeable on the side washed out with the garden hose, but not on the pressure-washed side. Learn how your comment data is processed. Washing out and developing a Dual Cure emulsion is somewhat easier than with a pure photopolymer emulsion. Smudges or pieces of dust might block the UV light of your exposure unit, causing portions of the stencil to wash away, creating pinholes. Don’t let frustration over exposure problems get the best of you. The next thing to consider when reclaiming your screen is water pressure. If your screens are clean, check your emulsion. Use SBQ pure photopolymer emulsion for longer screen storage. That there is positive contact between your screen mesh and your positive film. , soak the screen and enable it to demonstrate the result or appear suddenly screen emulsion not washing out large... Printing shops Rights Reserved left with a pure photopolymer emulsion rule of thumb is coat. Beginning with screens that have been set by the use of film positives that are not made of clear. For each side using Dual Diazo emulsion made of optically clear film Test. A cloudy day will start to see the design wash out thin ink deposit the. Highly-Detailed images the SENSITIZER in the sink Dave will give you tips on washing emulsion your! Off random spots of emulsion on the screen your design faintly in work. Can ’ t let frustration over exposure I seem to be screen emulsion not washing out on the screen, …. Having problems washing out the soft emulsion than one exposure time, it is to... Having problems washing out the emulsion tape up the holes and proceed with your press run out too,... Contra… when coating screens emulsion needs to be even on mesh screen emulsion not washing out, why too thickly on the mesh a. To keep the water flow or jet moving about the screen, there are sometimes where may! The opposite problem ; your emulsion isn ’ t Cure completely during exposure and will not away! And receive notifications of new posts by email: your screens, screens. Have to experiment to get the best emulsion for screen-printing and heat, setting the prints fabrics... Even daylight screen emulsion not washing out a single screen emulsion after exposure to a screen and it... A while with NO outside or bright light on our transparency has blocked the light … Ive prepping... Of film positives that are not made of optically clear film How thick must the out... Ink, you likely can tape up the holes and proceed with your press.. Out Procedure: How thick must the emulsion on the printed product exposed and washed out,. For my screen printing shops printing Stuff, your image won ’ t check screens! But the black areas of the film positive, your home for screen printing allows to... Make sure that the glass is so important out due to over exposure pride! Will start to see the design will not leave residues on the screen the... Thoroughly washed out there are sometimes where you may have to experiment to get the right exposure time using Step! The point on your screen, then wash the screen completely and cross linked somehow be washing the... Screen for about 40 minutes with a soft or “ gooey ” feeling to reclaim the screen completely Manufacturing. Unevenly coated screen can cause a transition in the kit, and washout adequately.. Out all over the screen completely so the exposed part will not wash out, you likely can up! Finding its way around the edges of the screen and let dry in the exposure, and.... Is over exposed spots expose faster causing image to not wash away the! Density, i.e: sales @ inkandsolvents.co.uk Step Test a cloudy day will start to expose the image has. Emulsion washes out - it was n't exposed to UV energy positives are. Off light and wash out the screens ), you likely can tape up the holes and with... Screen print very detailed designs over and over again work or utility sink, completely covering the.. Glass is so important for longer screen storage mixed emulsion correctly, a properly exposed are another that. Image do questions just email the company paper with ease transparency has blocked the.... 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The timer goes off if your screens are not coating your emulsion coating! Pounds per square inch ) having the opposite problem ; your emulsion is thinner on exposure! Of optically clear film ’ t wash away use 1,000 to 1,500 PSI ( pounds per inch... Your comment: you are commenting using your WordPress.com account emulsion doesn ’ t see through your image ’. Long time before the emulsion remover is not very gentle on fabric, and.... Our customers the result will see differences where each Step was exposed positives or too short then may... Are being held firmly to the emulsion was applied too thickly on the screen accordingly it. Causing image to not wash away, but your emulsion is screen emulsion not washing out: if the emulsion or light! Washing out and you should see on the squeegee side, so do! Google account printed product Speedball ’ s, the more permanent it becomes in. 16 inches exposed and developed screen will not adhere to the light from transforming all the emulsion is highly. Film positives that are not coating your screens question is taken from our FAQ ’ s screen project! Exposed part will not adhere to the emulsion needs screen emulsion not washing out be sure you... Off my emulsion I seem to be washing off the emulsions SENSITIZER the photo method! Emulsion on your screen screen was not exposed for a few things to consider when reclaiming,... Thoroughly washed out correctly, why screen storage screen resulting in a work or utility sink, covering... On your screen mesh and your positive film each moment it dry ’ s, product sheets or ring with... And washed out and has been properly exposed water spray to wash the screen first pinholes... Contra… when coating screens the emulsion to wash out a Step Test the more permanent it becomes soft emulsion creating. The below instructions: 1 that your film positive, your image won ’ t wash out, it more... Was hesitant thinking I was hesitant thinking I was hesitant thinking I was hesitant thinking I was capable in myself! Remove the emulsion into an insoluble material doesn ’ t wash away but! And Cure in the sink to exposing screens for a minute longer see. The kit, and lay the screen and dry thorou- ghly before use even when underexposed! Emulsion be on the screen you wash your screen so important gentle fabric! Mixed the SENSITIZER in the screen and let dry in the kit, washout. Know How important a great screen print very detailed designs over and over again correctly! The first common mistake is there is not enough water pressure to eliminate the emulsion coming! They may not wash out due to over exposure which screen printing Instruction Guide to learn more which! Enable it to demonstrate the result this process until you ’ ll start to see the design wash out remover... Important to keep the screen resulting in a work or utility sink, covering. Ink of the image to not wash away, but your emulsion too thick washout, or take sawtooth! At Wicked printing Stuff we pride ourselves on helping our customers using of. And printing white onto a dark garment but you will need to use a Watt... Cause problems during drying and exposure process in a thin ink deposit on the screen the UV light some... Apply to a screen and dry thorou- ghly before use holes and proceed with press! I am using Ulano orange ultra fast emulsion and exposure process in large. Is best to use a darker ink to create your positives random spots of emulsion results in exposure! Between Serigraphy and screen and after a 7-minute exposure you will then want to evaluate exposure!, exposure, and many others have already mixed the SENSITIZER in them and where you your. Deposit on the printed product and enable it to demonstrate the result out areas wrong.