Re: Users of digital negatives
I have worked with photoceramics. You know- the images made permanent by
fusing at high temperature onto ceramic substraits- for many years.
Digital printing has taken me out of the darkroom and made it easier,
quicker, more responsive and repeatable, lowered pollution and costs.
I started photoceramic work using the wet collodion process. Noble metals
for toning such as platinum or iridium were and are very expensive. Many of
the wet collodion chemicals are toxic and present many hazzards. Digital
printing has exceded the results of wet collodion photoceramics in all
except exquisite image detail.
I have worked with dust-on photoceramic processes and find digital printing
to be less polluting and more dependably repeatable. Digital printing
requires no ultra -violet light source as does the dust-on process.
I presently am digitally printing waterslide decals which can be fired onto
porcelain, tiles, glass and enameled steel. The choice of fusable frits
that have correct expansion and fusing temperatures is much greater using
this process. To digitally print waterslide decals for fusing images onto
ceramic substraits, I concocted a digital fluid that I load into a suitable
ink jet cartridge that will work in a drop -on- demand piezo electric
printer. Most important is the ease in which toneality can be controlled
through the use of digital techniques. The importance of this alone must be
emphasized. When the organics of the waterslide decal are incinerated and
the fusing temperatures are reached, ceramic image pigment particals melt
and spread as they fuse. This inevitable "dot gain" plays havoc with the
mid to dark tones. Digital manipulation works miracles to control this
Perhaps this unique use of digital printing may interest you. Harry L