We make high quality custom Piezography K7 curves for users, and have formed quite a collection over the years. After checking a curve and confirming it produces great results, we make the curve available for others. This is the resource where you can download new curves to try, including papers not included in the QuadTone RIP download, gloss/semi-gloss, and specialty papers. There are some curves for the same printer model/family and paper, which are available for different ink sets for you to try. Keep in mind, these curves were made for different customers’ and printers’ over a several year period. We have opened and checked the curves to make sure they look correct, and you may get great results using them with your Piezography setup, but several factors effect the output quality and consistency, so let us know if you don’t get acceptable results and we can help you determine why.
Piezography curves are specific to a printer model/family and paper. Make sure to download and use the curves appropriate for your printer model/family, as per the information below:
* Originally, we developed curves for each printer family, but soon discovered the UltraChrome K3 printer models (R2400, R2880, R3000, 3800, 3880, 4800, 4880, 7800/9800, 7880/9880 and 7890/9890) can actually all use the same QTR curves. These printers are producing the same sized dot and the QTR driver for these printers is relatively the same in terms of output structure.
The curve structure and ink limit of say a 3880 curve is different from a 7880 curve, but both curves will actually work with both printer models. We recommend using the lower ink limit of 3800/3880 curves for the best gloss compatibility, though some higher ink limit gloss curves are available to try and decide which you prefer.
* The 4900, 7900 and 9900 use the same curves as each other.
* The 4000 and 7600/9600 use the same curves as each other.
* The R1900 and R2000 use the same curves as each other, which are similar to the R800/R1800 curves.
* The 1400, 1410, and 1430 use the same curves as each other but there are not enough ink slots in these printers to support glossy printing.
UPDATE: Since the writing of this article in 2014, we have updated out curve archive. The entire Piezography curve archive including Glossy curves can be found in our new Piezography Community Edition by clicking here.
HOW TO INSTALL NEW CURVES FOR USE WITH QUADTONE RIP
To install a new curve to use with QTR, you will need to drag and drop the curves (NOT the FOLDER containing the curves, but the individual curves themselves) into the following folder location:
(Windows) C:ProgramFilesQuadToneRIPQuadTone(Your Printer Model)-K7
(Mac) /Applications/QuadToneRIP/Profiles/(Your Printer Model)-K7
NOTE: With Mac users, you must uninstall your Quad printer model then reinstall it using the install.command located in the same folder you placed the new curve in. You will also need to restart your printing application if it was open when installing new profiles. This will show the new curve in QuadTone RIP. You will not lose any of your previous curves when you uninstall the printer.
NOTE: When using a printer model with MK and PK cartridge positions (3800/3880, 7890/9890 and 7900/9900), a Black Ink Change must be preformed to change between matte and glossy compatible black inks. Make sure to use the appropriate black ink for the paper and curve you’re printing with.
HOW TO PRINT GLOSSY AND BARYTA MEDIA WITH PIEZOGRAPHY
Read the manual!!! Glossy and baryta media require two passes through the printer. The first is the image printed with the appropriate curve. It is then force dried by electric dryer for 60 seconds. The second printing uses a white image and a special GO Curve appropriate for the amount of GO required by the media. You can NOT get good results without the second printing of GO. Besides opening up the shadows and increasing dMax, it eliminates bronzing and all gloss differential. GO is an essential part of the process.