You can also use the sheet-fed calculation for conventional print platesetters if you so desire. Multi-level halftones delivered in 2-bit or 4-bit rasters take a little bit longer, but not enough to need to be considered here. ![]() In practice Harlequin will run at about the same speed for 8-bit contone and for 1-bit halftone output because the extra work of halftoning is offset by the reduced volume of raster data to move around. This has proven to be a better metric for estimating RIP requirements than taking the bit depth of halftoned raster delivery into account. It calculates the data rate for delivering unscreened 8 bits per pixel (contone) rasters. Which is most appropriate for you depends on which market sector you’re selling your press into and where your focus is on the technical aspects of the press. You can use the spreadsheet to calculate data rates based on pages per minute, web speed, sheets or square meters per minute or per hour, or on head frequency. You will, of course, also need the specifications of the press(es) that you want to calculate data rates for. ![]() All you need to do is to download it from the web and to open it in Excel.ĭownload it here: Global_Graphics_Software_Press_data_rates And now we’re making a tool to calculate those data rates available to you. Over the years at Global Graphics Software, we’ve found that the best guidance we can give to our OEM partners in sizing digital press systems based on our own solution, the Harlequin RIP®, comes from a relatively simple calculation of the data rate required on the output side. But how do you know what RIP is best for you and what solution can best deliver maximum throughout on your output device? This is the first of two posts by Global Graphics Software’s CTO, Martin Bailey, where he advises how to size a solution for a digital press using the data rate required on the output side. The RIP converts text and image data from many file formats including PDF, TIFF™ or JPEG into a format that a printing device such as an inkjet printhead, toner marking engine or laser platesetter can understand. ![]() If you’re in the process of choosing or building a digital front end for your press, you’ll need to consider how much RIPing power you need for the capabilities of the press and the kinds of jobs that will be run on it.
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