Product category:
Printing Presses and Machinery (New and Used, Service and Repair)
News Release from: Komori UK | Subject: Lithrone SX40 press
Edited by the Printingtalk Editorial
Team on 10 April 2008
18,000sph Lithrone Press Prints Greater
Quality
With a new claimed maximum running speed of 18,000 sheets per hour (sph) Komori's latest model of the Lithrone SX40 press will provide improved print quality and job cycle times.
That is according to Komori, which said that the new Lithrone SX40 will be introduced at Drupa 2008 in hall 15 The Lithrone SX40 has already attained the environmental BG certificate after Komori proved that the press reduces a range of waste emissions, whilst being able to run alcohol-free and produce acceptably low noise levels
This article was originally published on Printingtalk on 18 Mar 2003 at 8.00am (UK)
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The press has a new, higher speed fully-automatic plate change (F-APC) facility with non-stop plate removal, which helps increase the speed for job to job change-overs.
The press is said to be able to change six plates in two minutes, enabling, along with KHS-AI, a 35 per cent reduction in job-to-job-change-over times.
From the end of production on one job to an approved sheet on the next will take just over six minutes, added the company.
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The automated coater plate change increases speed, precision and ease of use, claimed the company.
All controls are integrated and automatic through the new PQC console's touch screen.
The new KHS-AI fast print start-up system has a self-learning function, which progressively updates all press settings.
Komori said that the feeder on the new Lithrone SX40 has been developed for higher speed and to optimise the benefits of the new KHS-AI fast print start system.
The feeder board now needs no wheels for most jobs and has an independent motor that is not driven by the press, so sheet arrival timing can be adjusted electronically to enable greater control as the press accelerates towards maximum speed faster.
At the same time, the front lay area has been modified to improve handling of lightweight materials, especially at maximum press speed.
Within the feeder head mechanism, the cam follower drive has been modified to maintain constant contact at the highest speed, which is said to ensure accurate sheet separation and transfer with minimum maintenance.
On top of the feeder pile is an air containment system that allows precise sheet transport with the minimum of air, even when feeding at the higher maximum speed, added Komori.
The number of front lays has been increased and the air control has been modified in the sheet in-feed area to ensure register at the press's higher running speed.
According to the company, the water flow in the damping system has been improved to stabilise damping solution temperature and maximise the benefits of alcohol free printing.
Meanwhile, the ink fountain has been strengthened and the cheeks are now made of solid brass to ensure zero-set positioning in all operational temperatures, which is essential to maximise KHS-AI.
The automatic impression cylinder cleaning device has been repositioned underneath the cylinder to create more space and provide more flexibility in locating interdeck driers and additional air guides, which are often beneficial to the higher speed running of heavyweight carton stock.
Blanket washing speed is also increased through the new wet cloth system, with blankets and rollers now washed simultaneously and at the higher cylinder revolution speed of 8,000sph.
Transfer cylinders are of the contact free, skeleton type, with a new venturi system, to create a 'virtual cylinder of air', as described by Komori.
That is independently controlled via the pre-set air control system which is integrated in to the KHS-AI programme and its settings are progressively updated through KHS-AI's automatic intelligence function.
The transfer cylinder is diagonally skewed, which is said to improve unit-to-unit registration accuracy and enables the image on the coating unit's blanket cylinder to be skewed.
That can be useful when precision spot coating.
The coating unit now includes automated plate changing, varnish circulation and blanket and coater impression cylinder cleaning, whilst all washing programmes are now integrated in to the KHS - AI programme.
The delivery profile of the Lithrone SX40 press is higher, which is claimed to improve coater dryer and maintenance access and means that the sheet is flat when it reaches the final delivery vacuum system.
At higher paper speed, that also provides additional sheet control and longer drying time.
More variable speed blowers have been added in the delivery and are now integrated in to the pre-set and self-learning functions of KHS-AI.
Komori said that the delivery gripper bars are of a new shape to reduce the delivery air pressure and reduce air turbulence in the delivery, whilst in the delivery pile, the diameter of the vacuum slow-down wheel has been modified to provide greater sheet control. Request a free brochure from Komori UK ...
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