As Paul says here, matching colours to your 7880 is going to be difficult.Paul;13737 wrote:But I am affraid you can not mach colors in 100%. very close but not 100%.
As I understand it, the 7880 uses Epson's Ultrachrome K3 with Vivid Magenta inkset - 8 inks including three shades of black. This is an inkset that has been endlessly developed, tweaked and adjusted over the years to produce accurate colours and an unsurpassed greyscale on specific papers. The 7880 is a professional printer that I believe is individually calibrated and profiled.
In contrast, dye-sublimation technology uses an inkset that hasn't changed since the Dark Ages in printers that were never designed for them. Quality isn't an issue but, while Epson develop their inkset to offer the widest possible colour gamut, dye-sublimation inks can have some of the smallest colour gamuts ever seen (depending on the printer).
The only way to even hope to get colours close to what your 7880 prints is to obtain a profiling device to manually tweak and constantly adjust the profile of your ink/printer combination of choice. Without that, you'll be supplied with a general profile that may be quite inaccurate for your printer of choice - I recently had this issue when I tried the Epson B40W and the supplied profile produced a horrible green cast that could only be overcome by creating my own profile.
While you've come to expect colour-perfect printing with your 7880, dye-sublimation is really little more than a "close enough is good enough" printing system (anyone who says otherwise is kidding you). Whether you go for a 4-ink or 6-ink system is largely immaterial because, in either case, you'll want to create your own profile and with that, the 4-ink system is likely to produce the same results as a 6-ink system.
You may find it advantageous to, at least initially, buy the cheapest set-up you can and see what the results are like before you spend your whole budget and end up disappointed. Whatever you decide to do, don't go promising your customers that their photo will print identical on a mug or mousemat as it does on the canvases you sell until you've tried it out.
Sorry if this sounds a bit negative, but there's a reason your 7880 is a considered purchase while dye-sublimation systems can be had for a song in comparison. Epson invest their profits in R&D to produce the best match between printer, paper, and inkset. Sawgrass don't.
