THE CLIENT’S NEED
NOVO’s client had developed the world’s first page-wide inkjet printhead and gave NOVO the prototype printing mechanism with the request to develop it for commercialization. The product specifications included borderless printing on all supported media and use of five independent fluidic channels in a CMYKK fluidic connection to supply the five independent fluidic channels of the printhead.
THE TECHNICAL AND DESIGN CHALLENGES
Although not part of NOVO’s original task on this project, several unforeseen challenges with color contamination arose which NOVO resolved with adjustments to the ink delivery system. First, the NOVO team discovered evidence of static color mixing. Second, dynamic color mixing was occurring due to flooding of print nozzles in close proximity to one another. Also during printing, aerosol deposition was occurring as air current trapped droplets in the printhead upstream from the highest-duty color planes.
THE ENGINEERING BEHIND GREAT PRODUCTS
To resolve issues of color contamination, NOVO designed a variety of solutions that reduced the volume of contamination and then drove any residual contamination into K:
- Creation of a different color order
- Resetting of color profiles
- Adjustment of the ink reservoir position to obtain differential backpressures, thereby preventing contamination due to static color mixing
- Manipulation of the surface tension of different inks using surfactants
Once on the market, this printer won awards and became known as one of the fastest and most cost-effective printers available.