F2 Commander CL DE PWHAThe Commander CL’s off-bearer printing units are precision engineered, compact yet easily accessible. The torsionally rigid box-type construction of the side frames and the new cylinder bearing guarantee a smooth press run and superb print quality. Towers that are just six metres (19ft 7in) high shorten the distance between the printing couples, reduce fan-out and, in conjunction with mechanical bustle wheels between the stacked H-type units, ensure good registration. Pneumatic bustle wheels are optional.
Intelligent plate and blanket cylinder systems
With the standard lock-up slot used for manual plate change the plates can be mounted fast and in-register without the aid of tools. Continuous slots support the use of double-spread plates. The lock-up slot can be preconfigured for conversion to a pneumatic plate lock in preparation for a subsequent upgrade to automatic or semi-automatic plate changing. A double clamping bar for the blankets allows the leading and trailing edges to be clamped separately for a perfect fit. The blankets can be mounted using an optional spindle system to support heatset semicommercial production. Provision has been made for the addition of optional blanket washing units.
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Fast run-up to colour
The undershot film inking unit adopted from our Commander CT has full-width ink ducts and three forme rollers (two with a 4/1 configuration). The result is less dot gain, enhanced process stability, frugal ink take-up, outstanding solids, a contrast-rich image reproduction and minimal ghosting. With this inking unit it is possible to achieve a higher colour density and a larger colour space in coldset printing that is above the norm. The roller constellation, with two direct ink trains, makes for a quick response and reduces ink mist. This cuts waste and cleaning input. An automated inkingunit washing system is available as an option, as is inking-unit cooling which we recommend where long-run production is the order of the day.
Optimised spray dampeners
The new-generation triple-roller spray dampeners are always installed in the pre- dampening position. The fount solution is transferred to the dampening distributor roller via an optimised cylinder-wide spray bar with two nozzles per page and individual pulse control for each nozzle. A new nozzle-cleaning function eliminates contamination and reduces maintenance. Where production entails different web widths the spray dampeners can be fitted with optional shutters that are adjustable from the console.
Dedicated drives for each printing couple
The KBA Commander CL shaftless drive concept incorporates one AC motor per printing couple. Dedicated drives allow an independent, time-saving makeready. They also deliver enormous benefits in terms of operating ease, flexibility, web tension, print quality and waste.