Inkjet & Digital Printing

Improved printing speed and enhanced print quality at several HP T4xx presses

Monday 16. February 2015 - Today the HPT4xx presses are equipped with up to 3 modules of combined carbon based IR with hot air driers, depending on the speed and substrates to be applied (total heated length more than 3 m!).

Today the max. speed in mono color operation should be 240 m/min. But due to
– thermal heat on the printed substrate and
– given high paper dry-out
the day by day realistic production limit is mostly 500- max 600 ft/min.
When replacing the existing dryer units by one NIRWebIII-40-125 an adphosNIR-drying module with only 125 mm (!) heated length, the mono color operation – up to 800 ft/min is proven already in 3 modified HPT4xx presses.
In addition to the possible improved printing speed, a tremendous reduced substrate shrinkage (more than factor 10), no paper dry out and therefore no need for an afterwards remoistening and flat-printed products have been achieved with the adphosNIR replacements.
Three presses at a European leading book-printing group have been successfully modified within the last 18-month and show up to 70 % energy cost savings.
adphos also provide dryer upgrade solutions for other digital printing presses (e.g. also HP T2xx or T3xx presses) to gain enhanced printing quality (higher crisp, better brilliance, higher color density, less shrinkage, less/no waving) and in proven production speed with reduced energy consumption.