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Comet 2/2

A single-width, double-circumference web offset tower press with shaftless drives for printing colour newspapers and semi-commercials. Ergonomic handling, a high level of productivity and an outstanding print quality have made the Comet the press of choice for countless newspaper publishers worldwide.  
KBA Comet
tower press 
  • Max. 75,000cph in straight production  
  • Collect option for greater flexibility with high-pagination products 
  • Compact, user-friendly design and cutting-edge technology  
  • Excellent quality in both heatset and coldset 
  • Dedicated DriveTronic shaftless drives for each printing couple  
  • Sophisticated console technology and product-oriented operation to facilitate handling and cut waste  
  • Wide choice of optional equipment for inline finishing, paper logistics, etc  
 
 
Like all KBA presses, the Comet can be integrated in a KBA Patras reel handling system. The standard reelstand for the Comet is the KBA Pastoline. 

KBA Patras

Our Pastoline reelstand is a standard item of equipment with the Comet 
  • Patras M supports a high level of flexibility in configuring your reel logistics system 
  • It can be custom-configured to suit production requirements and plant architecture 
  • Patras A is available in conjunction with our Pastomat C reelstand 
 

KBA Pastoline high-tech reelstand

Our user-friendly Pastoline automatic reelstand features AC drives, an electric braking system and divided arms. It is engineered for a maximum web speed of 13mps (2,560fpm). The arms on the standard version can be adjusted electrically in increments of one millimetre (0.039in). They can accept reels up to 1,270mm (50in) wide and weighing 1.3t (2,866lbs). To facilitate handling, the controls for the Pastoline are fully embedded in the console system. 
Optional extras include a webbing-up chain for automatic web infeed. Special features such as pre-splice edge alignment between the new and the expiring web make the Pastoline suitable for semi-commercial production as well. 
The off-bearer H units in the Comet are compact, accessible and easy to handle.  

H units

Easy to handle 
  • Blanket-to-blanket 
  • Four-high tower configuration for 4/4 with one web or 2/2 with two; additional web leads available as options  
  • Dedicated KBA DriveTronic shaftless drives for each printing couple  
  • User-friendly design 
  • Remote register adjustment from the console  
  • Minimum print-free margin 
 
Four-high tower with H units 

Inking unit

KBA Comet inking unit with
undershot ink knives 
  • Film inking units with undershot ink knives 
  • Wiper and hook-on ink trough for fast ink changes 
  • Superior, stable print quality, even on challenging images and during long print runs 
  • Remote ink-key adjustment from the control console 
  • Automatic pumping of black and - where appropriate - process inks (option)  
 

Dampening unit

  • Triple-roller spray dampening unit 
  • Individual, sensitive metering 
  • Minimal start-up waste 
  • Rapid response 
  • Constant dampening conditions 
  • Easy access, minimal maintenance 
  • Easy access 
  • Space-saving design 
  • Optional disengagable dampening unit and shutter for different web widths 
Spray dampening unit 
Compact, durable and easy to access, the superstructure supports a high level of flexibility in everyday production. 
KBA Comet superstructure with dedicated AC drives for the draw rollers 
  • Remote-controlled, electrically driven draw rollers 
  • Motorised cut-off register adjustment  
  • Turning facilities with or without bay-window rollers, insertion deck, etc  
 

Web infeed, web tension

Directly driven
infeed unit  
  • Fast webbing up with running belt on drive side, chain web-up system available as option 
  • Electrically driven infeed unit  
  • KBA Basko helps operator set, control and monitor web tension 
  • Photoelectric web-break sensors  
  • Pneumatic, contact-free bustle wheels compensate for fan-out  
 
Basko 
The KBA Comet can be configured with a standard KF 3B or a more highly automated KF 3 jaw folder with a 2:3:3 cylinder ratio. Both folders, which are the same size and have the same interfaces, can handle a maximum of 80 broadsheet or 160 tabloid pages. 

Folder superstructure

  • Electrically driven RTF, set and controlled remotely from the console  
  • Air-blown 71° former 
Options  
  • Two or three formers in balloon arrangement  
  • Skip slitter  
  • Length gluing unit  
  • Ribbon stitchers (for delivering stitched magazines in straight production, etc)  
  • Length and/or cross perforation 
KF 3 jaw folder 
KF 3B jaw folder 
  • Cost efficient yet highly productive 
  • Driven draw roller, speed adjustable 
  • Dedicated AC drives
    (can be used for maintenance and makeready) 
  • Pneumatic expansion element at the collecting cylinder 
  • Central jaw setting 
KF 3 jaw folder 
  • Advanced level of automation for a rapid reset of production-relevant functions 
  • Collecting-cylinder diameter pneumatically adjustable to copy thickness 
  • Remote adjustment of over and underfold 
  • Electronic copy control with counte 
KBA folders: key features 
  • KBA DriveTronic shaftless drives 
  • Exceptional reliability 
  • High-precision folding 
  • Exact delivery 
  • Easy handling 
  • Convenient maintenance 
  • High safety standards 
  • Long service life 
Options 
  • Choice of chopper fold as quarterfold 
  • Second parallel cross fold 
  • Section stitcher 
  • Gluing and/or softening unit 
 
KF 3 folder 
Distributed controls for electrical and electronic components at subassembly level and a choice of automation options enable press handling, control and preset to be customised to individual requirements. 

Subassembly level with distributed control system

  • Reelstands, printing units and folders are controlled via remote processors located directly in the relevant units 
  • The processors are linked to each other and to the control console via a powerful data bus system 

Press level with control and data system

Production is controlled and monitored from high-tech consoles 
During the print run all automated press functions are initiated, monitored and controlled from the console. Even the basic version is copy-based, enabling individual pages to be selected directly and automatically assigning them to the relevant printing couple. 
 

Process level

Integration into a production management system with optional modules for production planning, press presetting and control.  
  • RIP interface enables digital pre-press data to be downloaded for presetting ink keys 
  • Scanner for presetting ink profiles 
  • Direct data exchange with administrative departments  
  • Remote maintenance and diagnostics  
Maximum web width 

 

 

 1,000 mm

Cylinder circumference 

 

 

 1,000 - 1,400 mm

Cut-off  

 

 

 500 - 700 mm (standard: 500/533.4/546/560/578/598.5/630/700 mm, others on request)

Maximum output 

 

 

 75,000 cph in straight production

 

 70,000 cph with circumference <1,260 mm

 

 65,000 cph with circumference <1,197 mm

Printing units 

 

 

 H-type with 2 - 4 printing couples

 

 Stacked H-type with up to 8 printing couples (four-high tower)

 

 Film inking units with undershot ink blades

Shaftless drives 

 

 

 DriveTronic, with one dedicated AC motor per printing unit

Option 

 

 

 Semi-commercial package with thermal dryer

Pastoline reelstand  

 
Maximum reel diameter 1,270 mm
Maximum splicing speed 13 mps

 

 

KF 3 folder 

 
Cylinder ratio 2:3:3
Maximum capacity 80 broadsheet pages, 160 tabloid pages
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