Creating high quality film positives for the best stencil with screen printing machine is a challenging work. The beginners who are ready to start screen printing artwork, it is hard and complex for them to print film positives. Sometimes they become very frustrate as they don’t have much knowledge on that. I would like to share you some guideline of creating high quality film positive with the best stencil. I truly believe that if you follow them, you can be a successful to create film positive properly.
If you can use an appropriate ink and suitable printing material right way to film positive, it will transfer your screen printing artwork into digital artwork. The screen printing equipment users should aim at to make a film positive which is not transparent and which will block out light as they expose their screens to create a clear and crisp stencil.
Making Digital Image
If you want to develop an art into your film positives through your computer, you must setup a proper program in your computer. Here are 3 steps to setup the program in your device.
Development of Program Setting
Every screen printers should check the image setting when their image is ready and also check and make sure that the settings are adjoined with your digital screen printing machine. The resolution that should be set by you is 300 DPI (dot per inch) and you should be insured that the measurement dimension of the image and size matches with your printer. Some additional adjustment may be required on the basis of your printing work.
Make Color Separation
Screen printers should spend enough time to separate colors of the image as they give time to create film positive. The program that you use for the artwork of printing will determine the exact method of color separation but the fundamentals will remain same. Each and every color needs to be separated according to their layer. If you ensure this, it will help you to print isolate film positive and also helps to produce separate screen color.
Line up Film Positive and Ensure Registration
Center crop line and registration should be added with every image layer after completing adjustment your screen printing artwork with your screen printing equipment. This will help you to make a line up your film positive and make ensure of your registration.
What materials should you use?
Only the ink and the film these two materials in needed to create film positive. To create high quality film positive for your screen printing artwork, you must ensure the proper ink and the proper film.
Get the Right Film
In screen printing there are various types films. Many screen printers like to use laser vellum or inkjet film and they depend on it largely. But you make a choice on the inkjet film instead of vellum as it is stronger vellum film and you can use it on non transparent image. On the other hand, though the vellum film is not as sturdy as inkjet film, it is not expensive. In case of vellum you can also use the uneven and the large image.
Here are two more films which create opaque image and need expensive equipment's-they are setter film and thermal film. There are many large screen printing presses in different parts of the world that are using expensive printing equipment to create high quality film positive. But those screen printers who have no ability to high invest for expensive equipment, the image-setter or the thermal film can be used by them to make high quality film positive.
There are two types ink is found in screen printing- dye based ink and pigment based ink. If you use due based ink in screen printing, you will be able to print an opaque print and best film positive. If your used ink isn’t compatible the film, your artwork will end in smoke. In screen printing few films are compatible with pigment based and few are compatible with dye based ink. If you can make a better combination with ink and film, you will be able to print high quality film positives and the most opaque image by screen printing press.
Using Raster Image Processing Software
Many screen printers may be ready to start their screen printing press having the digital image and screen printing materials in their hand but they can think about RIP to create the opaque and crisp film positive which will work well in detailed image. Raster image processing software is popular to many screen printers as it helps them to control the ink to print on the film and helps to make clear film positives. Without raster image processing software anyone can have good film positives but the opacity and the dimension of the film can be added by the RIP software.
High quality film positive is very crucial agent for the screen printing machine to increase the production capacity. On the other hand, if the film positive low quality, it may be threat for the production process. So you need to be a genius to produce quality film positives.
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