The ezscreen silk screen stencil and transparency film must be tightly. Vellum for screen printers eliminates the need for a darkroom. Use our free downloadable exposure calculator to dial in your exposure time in your dark room. An easy, user friendly tool for the novice and the advanced screen maker. Atlas exposure calculator screen printing supplies. Exposure calculator tech sheet 966cciexposurecalculatordatasheet. 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. Screen printing exposure board units ezscreenprint. Free screen exposure calculator nevertheless screen.
Right this time and distance down, so you dont have to waste screens doing it. Dialing in your exposure time is a bit like using the goldilocks principle. Cts processes that are used today in screen printing. Examples of exposure calculators for screen printing. A perfectly exposed screen will display a gradient level of 7. Ccis exposure calculators help dial in your exposure times with one shot. So whether youre in the humid tropics of thailand or in dry and nippy switzerland, the only way to expose perfect screens is if you use an exposure calculator. In this ebook we dont care which sort of printer you are we just care that you get great prints coming off your press. The cps exposure calculator provides quick, accurate determination of exposure times, with all photostencil systems. Exposure lamp comparison dynamic screen printing supply. Eliminate miscalculated exposure times and save hours of frustration by following the steps below.
At least 90% of stencil failures can be traced back to. A complete instruction guide is provided with each calculator. Expose and washout test screen according to preestablished procedure. Screen printing equipment manufactured by vastex your source for high quality screen exposing units and screen drying cabinets. Chromaline exposure calculator river city graphic supply. Designed to help determine correct exposure time, print quality check and halftone tests. Every screen printer does things a little differently.
The filters give you four different exposure percentages 73%, 50%, 25%, 10%, and a filth area of 100% or 1. Before i begin, please make sure that your exposure setup is correct. Screen exposure calculator nevertheless screen printing. Finally, a free exposure calculator for anyone to download and use.
Spsi screen printing, embroidery, digital, graphics. Download the free file, and use to test the proper exposure time for all your different. Chromalines exposure calculator eliminates miscalculated exposure time with three kinds of quality checks. For example, i use a diy screen exposure unit that consists of a flood lamp. The 1620e unit uses a uv black light system for the perfect frequency and minimum exposure time. Expose the screen for the amount of time you came up with in step 3. Dial in your exposure time during screen printing chromaline. The type of metal you want to mark will impact the process. Today, i am going to show you the application for doing an exposure calculation. Step wedge test a high quality print requires a good stencil.
Atlas exposure calculator eliminates miscalculated exposure time with two kinds of quality checks. Light is then shone upon the screen for a predeterm ined am ount of tim e until the em ulsion is hardened. Simply download the file, print out on a transparency film, and then start calculating your proper screen exposure times. Exposure calculators are made by emulsion companies. Screen exposure is the final step required to prepare your screen for the printing press. Introduction to screen printing pdf and join the vastex mailing list. Evaluation of employees exposures to organic solvent. The exposure calculator is a positive where the images are dense black and no light will pass through them.
From direct emulsions to capillary and directindirect films, we are here to help determine the stencil system that is right for your next job. Customize your products at a considerably faster pace. This episode covers, how to apply and expose your film printed exposure calculator to find the perfect exposure times for your emulsion, mesh. Screen exposure choosing the right exposure system. This exposure tool uses neutral density filters that will give you one shot calculation to narrow down your exposure times.
Expose the screen for the amount of time you came up with in step 3 again. Ulanos exposure calculator tutorial screen printing. The results depend on some areas of the emulsion being. So we thought we would put this guide together to help work through your requirements and to come up with the right answer. This cci exposure tool will help you verify proper resolution and exposure of your stencil using neutral density filters to give you one a shot calculation to help narrow down your exposure times. The filters give you four different exposure percentages of 70%, 50%, 25%, 10% and fifth area of 100% or 1. This invaluable tool takes all the guesswork out of exposure determination to improve quality and productivity. Screen printing exposure units and screen drying cabinets. Receive updates, news, and promos directly on your phone. How to perform a step test to determine proper emulsion. Screen exposure problems and solutions merchmakr diy. The 1620e also has a pin registration system allowing you to preregister your artwork for faster setup.
The screen printing machine kser1 evo is a real screen printing workshop all inone. How to expose photo emulsion for silk screen printing. To use the exposure calculator you expose the stencil, process the screen as normal. Here are some pictures of my home built screen printing exposure unit. If you get results with less or more exposure time there will not be consistency in other screen exposures. Tape the calculator to screen, and cover all but the first row with thick, opaque paper. Incorrect screen exposure time is a huge problem that you may not even realise is.
During exposure, the film created in the previous step is placed upon the screen so that it sits between the em ulsified screen and the light source. Easy screen printing exposure calculator that works with. Equipped with a powerful exposure uv lamps and digital timer, you can easily transfer your image to the screen frames without the use of other machinery for engraving. Measuring only 12 x 3 34, it will fit on your production screen without. Good contact during exposure to light source is an important key element to making a successful silk screen stencil. In this how to screen print video we walk you through the steps of registering, exposing, and post. The sessions station is a cartable, creative hub, transforming into a screen printing space whilst hosting an exciting wellstocked craft cupboard that children are encouraged to explore. Commissioned for square pegs and parentfolks latest venture, pf x sp sessions, designed and built by doing bits studio. You simply use the exposure calculator on a screen in place of a normal film positive. Instructions are easy to understand and very complete bottom line. You know one extreme causes an underexposed screen, and another.
Incorrect exposure is one of the primary and most frequent causes of stencil failure in screen printing. Exposure is one of the most important steps in screen making and will directly affect the quality of the print and press life of the stencil. Exposure board units are made with black felt fabric adhered to a rigid board, along with a clear nonuv blocking acrylic frame and clips to hold the stencil and artwork firmly in place during exposure. The best way to get an accurate answer is an exposure calculator. Youre looking for an exposure time of approximately 47 minutes. Place the exposure calculator on the screen like a film positive and expose it for double your usual, or expected, exposure time e. After the screen has been in the closet for one hour and is completely dry it can be exposed. Free screen printing pricing calculator tshirt forums.
Incorrect exposure is the single biggest cause of stencil problems. We are often asked what is the best exposure unit for my screen printing business. How to screen print series screen exposure youtube. The screen printing calculator can be used to screen print better halftones. Overexposure of the screen use a harder spray of water. For others its one step in a bigger pro duction chain.
Home built screen printing exposure unit build overview. Like always what seems a simple question does not have a simple answer. Step 3 print out the exposure film file onto transparent film check for correct density on film. Step 4 follow the steps as layed out on the exposure calculator. Exposure calculator screen printing pdf free download as pdf file. Problem possible cause solution image wont wash out of screen. Results will reveal resolution and definition at 100%, 75%, 50%, 33%, and 25% of typical exposure. In a single exposure, this 10step guide tells you how to adjust your exposure time for complete stencil curing.
Ulano sells an exposure calculator which you will see is a five step filter to be used in conjunction with a piece capillary film, or even better yet use one of your own positives. How to use our free screenprint exposure calculator to find the. The cci exposure tool will help you to verify proper resolution and exposure of your stencil. Exposure systems your exposure system determines your success in screen printing. It can also be used as a printing aid to optimize print quality, or as a means of process control. I once owned the finest automatic presses available, had a state of the art computer graphic system, and a sales force that flooded my shop with orders, but never understood why i had so many problems on press. Start the test by exposing the first line on the step wedge calculator. The cps exposure calculator can be used to assess printed edge definition straightnessclarity of the printed edge and print resolution fineness of detail achievable. The actinic, wps mini exposure units and the fantastic wps led mini exposure units are ideal for educational and medium sized screen printing businesses. Test exposures should be twice the length of your normal exposures for the calculator to work properly.
Exposure units, exposure equipment, uv exposure unit. Using an exposure calculator the good news is that exposure calculators are very easy to use. The filters give you four different exposure percentages 73%, 50%, 25%, 10%, and. Cci exposure tool to help you verify the actual resolution and exposure of your screen printing stencil. If you are not sure how to obtain the correct screen exposure time from an exposure calculator, you may want to join the screen printing a to z class with douglas grigar as this is one of many points that is covered in detail. An exposure calculator can really help you dial in your times regardless of your exposure light and emulsion type, they are low cost. With this fantastic screen printing machine able to print a large number of objects. Free exposure calculator yes, but the object of an exposure is to crosslink the exposed bits of the screen to be insoluble whilst leaving the masked bits soluble. What is the best exposure unit for my screen printing.
Exposure calculator chromaline screen print products. To print tone correctly, you must know your mesh count, be able to control the size of your halftone dot, and have a enough resolution in your image for the screens mesh. If you have a solid mask with perfect contact its easy, anything above the minimum will work. An overexposed screen wont allow for enough ink through your screen while printing resulting in prints. Chromaline has a variety of film and emulsion products, each providing unique benefits for your printing applications. How will you accomplish the plans you want to set forth on. The exposure calculator consists of a high quality film positive that incorporates a. Here in the philippines, most screen printers use diy exposure units, and. The wps compact pro and heavy duty units ideal for busy print studios and larger screen printing businesses check out. Move the thick, opaque paper down to where it is covering all but the first 2 rows. Once the exposure unit has been built, the question is how long the light should be on. I had to special order them from a local lighting company. It is always better to achieve optimum exposure in the first place rather than rely on the hardening effect from a post exposure.
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