Single
Width
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Direct Injection has proven to be superior in
accurately metering ink to the printing zone. Injection systems
meter ink on a volume basis to each zone independent of the adjacent
zones. Injection systems directly meter a precise volume of ink to
each printing zone. The open fountain blade adjustment varies ink
film thickness to meter ink. Injection systems enclose the ink until
it is metered directly to the ink ball. The enclosed ink remains
clean, dampener free and requires no emptying and cleaning of the
fountain after each press run.
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Similar
injector systems have been used for years on large-scale web presses
typically associated with newsprint. These systems require a significant
initial investment and do not readily meet the specific needs of the
narrow web commercial printer.
Unlike the existing Digital Injectors developed for use on double width
newsprint presses, this new system does not require the user to return
components to the factory for servicing. The basic package utilizes our
long-life piston/injector components driven by a simplified single motor
drive system. The injectors and drive system are modular and feature
components that are serviceable by the end user requiring limited
mechanical skills and simple hand tools.
A high level of accuracy has been designed into our components so that
zeroing of the system is not required for the life of the product. The
individual zone settings produce a high degree of repeatability regardless
of the level of training. The injector uses a linear drive that does not
rely on an “ink curve” typical with open fountains systems.
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The injector system is made up of modules each containing eight (8)
zone injectors. The typical narrow web press utilizes twenty-four
(24) zones across the web. To accomplish this we install three
modules. The modules operated via a common drive system, metering
ink to each zone via individual zone hoses. Levers are supplied with
the base system to maintain simplicity. Once metered, the ink is
transferred to the original unit ink ball via the supplied
distribution head.
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Each zone setting operates
independently from its neighbor, regardless of its setting from maximum to
minimum flow. There exists no fountain zone interaction across the web.
Injection systems do not
utilize fountain levelers or agitators. The ink is maintained in an
enclosed pressurized supply system until metered directly into the unit.
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The system may be
ordered in its simplest form utilizing hand adjusted zone settings
and then upgraded in stages to the full-featured system as the needs
of the printer evolve.
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It may be upgraded at
any time to include motorized adjustments with local control, and/or
Integrated into a fully automated remote control console system with
RIP setting capability.
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As the system meters
ink via volume and not film, the typical adjustments of the ink ball
to pick up roller are limited to “close enough to transfer ink
without roller collision”. Zero settings are not ever required of
the system. To zero a column the injector is placed at its minimum
setting resulting in no movement of the injector piston. Zero is
achieved by the lack of ink delivery to the specific zone. No blade
verses ink ball gap are needed to establish this zero setting.
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As the injector meters ink
via a pumping action each zone can achieve any flow setting without
interaction from its neighbor. Precise settings across the web are
possible without the typical compromise due to physical limitations the
fountain blade.
To accomplish a color
change, the operator simply connects the new pressurized ink supply to the
inlet of the injector module and places the system in the purge mode. Once
the new color has been established at the exit of the distribution head,
the new color is ready to print.
For more information
contact: salesinfo@controlsgroupinc.com |
