BITTE :
Double Width Digital Page Packs
CGI digital ink injectors precisely control ink flow and therefore set image density by metering the ink on a volume basis for each key. Upgrading your existing open fountain to volume metering, or ordering a new press with CGI injectors specified, produces several important advantages, often returning the initial investment within the first two years of operation.
Digital volume metering eliminates the need for accurately setting the fountain blade assembly and knurled pickup roller. The ink volume delivered by each of the injector keys is computer controlled and does not rely on gap settings for accuracy. Removing the gap setting dependence improves reliability, lowers maintenance costs and produces a more consistent image density.
CGI double width press systems use stepping motors to directly drive each digital injector key. The stepping motors are powered by an embedded microprocessor contained within each page pack. Combining precision ground assemblies, with stepping motor technology and microcomputer accuracy, results in a system capable of +/- .05 key setting accuracy over the entire press speed.
The completely enclosed construction of the digital injector system eliminates the need for the open fountain, fountain levelers, and fountain blades while keeping the ink clean. Pressurized ink supplies and press deck mounted keyboards provide a safer press environment by eliminating the need for operators to climb ladders for ink adjustments and fountain maintenance.
When combined with CGI’s standard printing unit operator keyboard, press operators have continuous, accurate information relating to key settings throughout the unit. By starting a new print job with accurate information results in less waste and with corresponding reduction in all consumables.
“Simplify: to reduce to basic elements”. This is the engineering principle behind the design of the CGI digital page packs for double width presses. Three moving parts per column; a piston, swivel bearing and motor armature. No springs, no ball valves, no gears, not even a mechanical connection to your press. Supply our system with AC house power, press speed indication, pressurized enclosed ink supply and our digital inking injectors will meter into your ink train at better than +/- .05 accuracy per column. It doesn’t get any simpler.
The speed and accuracy of a computer control and the precision of a stepping motor are combined to directly drive each column’s piston. The piston and barrel form a fixed stroke, positive displacement pump incorporating rotary valving. This combination consistently delivers ink to your ink train holding accuracy to +/- .05 over a wide range of ink inlet pressures and viscosities and over the entire speed range of your press without further adjustment.
CGI pioneered the integration of computers into the digital page pack injector system in 1987. Since setting the standard for page pack design, CGI has continued to develop the ink injection by introducing the patented double stroke MicroDwell™ in 1993 and the smallest page pack available, the SlimPak8™, in 1995. Our integration of advanced computing systems and continued use of simple metering mechanisms have resulted in a range of products that are easy to install and simple to use. The system uses liquid tight enclosure for long term reliability while requiring no maintenance. The system remains accurate over the life of the product requiring no further calibration. No maintenance, the highest levels of accuracy, ease of installation, ease of use, and the longest warranties available…What could be better? …What could be simpler?
Micro Computer Controlled: Provides better than +/- .05 setting accuracy over the entire copies-per-hour speed range.
Instant Response: Integrated computer updates column settings in a fraction of a second resulting in instant response between operator input and injector response.
No Calibration: System is constructed utilizing machine tolerances resulting in the lack of period calibration for the life of the equipment. Micro computer technology and precision machining eliminate all need for user calibrations.
Enclosed Ink Supply: Ink supply is delivered to page packs from a pressurized source and metered into the ink train directly. The enclosed ink system protects virgin ink from press deck contamination and eliminates costly cleanup.
Open Architecture: The system may be configured for use with a remote operator console. The system is supplied for use with consoles utilizing industry standard protocol. The system may be integrated into any one of several common control schemes or CGI supplied as a stand alone system.
Ease of Installation: The CGI system operates independent of press gearing. No mechanical connection to the press frees the installer to place our page packs in a convenient user friendly location. CGI has installed its’ system on all major makes and models of presses worldwide.
Operator Keyboard: The system has been designed such that the system may be configured with or without a unit mounted operator keyboard. Custom keyboard designs are available as an option.
Ease of Maintenance: Page packs are factory sealed allowing user to clean units without commercial solvents. Simple cleaning is the only recommended maintenance required over the life of the product.
Fast Color Changeover: High-speed purge and short column ink passages ensure rapid change of ink colors.
Multiple Configurations: Systems are available in six or eight columns per page. Standard eight are for use with typical press frame spacing. Our micro dwell pistons produce the smoothest flow while the single stroke is useful in less critical applications.
Multiple Conversions: Systems are available for open fountain conversions as well as simple pump and rail upgrades. Injector systems may be fitted to all web presses regardless of origin or date of manufacture.
Absolute Zero: A column setting of zero results in an absolute zero setting. This ability to find absolute zero is unique to CGI injector product.
CGI remains the only manufacturer to offer the user a choice in digital page pack injector systems. Our printing unit construction and columns per page format for the printed page dictate which of our three designs best suite your application. This determination is part of our site survey procedure and is fully explained in our formal presentation.
The CGI Standard Eight column digital page pack is the best choice when the user wishes to maintain eight columns per page and the printing units have a mounting space of not less than 80 continuous inches. Standard features include an integrated controller, inboard DC power supply operating from low voltage AC power, serial communications, and calibration/maintenance free operation. This page pack is used in the majority of applications including the conversion of open fountain ink systems to digital ink injection.
Our Standard Six column digital page pack maintains the same features as the Standard Eight in a six column per page format. This digital page pack must be matched to a six column per page ink distribution rail making it an excellent value when combined with a web width reduction program.
With the introduction of more variations to the Standard Eight Column digital page pack, the customer is now able to order 6, 8, 10, or 12 keys per page for maximum flexibility and utility.
STANDARD FEATURES:
Unit operator keyboard
AC power transformer
Press speed sensing
Interconnection cables
Unit mounting system OPTIONAL FEATURES:
MicroDwellâ„¢ Injectors (available in all configurations)
Customer specified unit operators
Remote console Communications port
Customer specified mounting system.
