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On the two days of May 8 and 9, 2003, an open-house showing of the latest products, the Shaftless Web Offset Commercial Press, Color Master HB-5000ED, and the Shaftless Web Offset Commercial Press, Economaster BYH-5000ED were conducted at our Haneda plant. A total of 240 people came for the two days of demonstrations. During the showings the two presses operated at the top printing speed and the printed samples were immediately handed to the viewers as they came off press.
The Color Master HB-5000ED was developed by utilizing the shaftless drive technology experience in newspaper web presses and adapting it to the exacting precision printing requirements of commercial printing presses.
As shaftless drive systems allow the various units such as the printing and folder units to run independently, the time for press make-ready is shortened, paper waste and running costs are reduced and maintenance is made easier. Furthermore, there is flexibility in laying out of the press and improvement in the work environment. By incorporating such features as simplifying plate changing procedures and drastically reducing time-consuming operations, TKS is proud to present a very productive commercial web offset press that possesses a wide range of applications from printing small jobs to big jobs and from flyers (leaflets) to high quality catalogs.
A standard press layout would consist of a reelstand unit, an infeed device, four printing units, a dryer, a chill roller unit, and two folding units which would print at a maximum speed of 800 rpm. Because the reelstand unit and infeed device are equipped with such features as a paper width preset system, an automatic roll alignment system, and a tail controller system, the press is easy to operate. Further, due to the infeed roller being driven by an independent motor, stable tension is constantly maintained. For paper roll paster preparation, instead of the “V” type adhesive pattern, a simple straight line adhesive is used simplifying and shortening the roll preparation for splicing.
In the printing unit, in addition to being easy to operate due to utilization of a highly rigid single cylinder, print surface quality is constant and there is no smudging or marking from gaps because the diameters of the plate cylinder and blanket cylinder are the same. As the ink forme rollers and water forme rollers vibrate, the press is so structured as to prevent ghosting. To make it difficult for lint and dirt to get on the plate surface the water forme roller of the dampening unit has individual motors which are remotely controlled, and a bridge function is provided on the water forme rider roller so that ink that is trapped at the water forme roller is returned to the inking roller thus greatly reducing the chance of ink being trapped. Inking keys with special screws that open or close through individual motors that are remotely controlled assure precise and stable ink adjustment.
Stable fold accuracy and high quality printing are made possible because such features as the chill roller device which has four rollers to improve chilling capability, a CPC (Center Position Control) mechanism on the web guide to compensate the roll to the paper center even when paper widths are changed, and an infeed device are provided as standard equipment.
The folder unit is comprised of two easy-to-use single wide folder mechanisms, and besides jaw folds and chopper folds it is equipped for producing B-4 (tabloid) sheets. The folder is capable of producing a variety of signatures while taking up little space. With such automatic functions as a paper width preset system, one-touch switchover between B4 (tabloid) and B5 (magazine) folds, on-the-fly jaw fold adjustment, synchronization of chopper timing speed, and with the whole system running on a shaftless drive mechanism, high productivity with superb capabilities can be realized.

The Economaster BYH-5000ED is a single color high speed commercial web offset press with shaftless drive technology. It was developed for printing on coated and uncoated paper to produce such products as magazines (weeklies), comic books, and mobile phone instruction manuals.
This shaftless drive system, BYH-5000ED, is a high speed web offset press which can print 16 pages of B5 (magazine) products straight at a maximum speed of 700 rpm or 1400 copies per minute (equivalent to newspaper speed of 85,000 cph). It can handle a wide variety of print product sizes such as B5 (magazine) and B6 (digest) with signatures of 8, 16 and 32 pages for B5 and 16 and 32 pages for B6.
Because a shaftless drive system is used, various units such as the printing and folder units are equipped with individual motors thus, the time for press make-ready is shortened, paper waste and running costs are reduced and maintenance is made easier. Furthermore, there is flexibility in laying out of the press and improvement in the work environment. By using a spray dampener for the water dampening system, the problems caused by paper lint clogging the water fountain is eliminated resulting in reliable quality printing. Inking keys with special screws that open or close through individual motors that are remotely controlled assure precise and stable ink adjustment.
Starting with a new one-touch automatic switchover mechanism between B5 (magazine) and B6 (digest) products, the 2:5:5 jaw folder unit also incorporates such features as an automatic chopper speed synchronization system, a web width preset device, and on-the-fly remote lap adjustment all of which guarantees very high and stable precision folding.

 
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