The demand for high-mix, short-run, fast turnaround, high value-added printing is driving the daily workflow toward high levels of complexity and specialization. The diverse specifications of different jobs makes printing processes more difficult to manage. Also, there is a need to employ special techniques and effects to differentiate sales materials for added impact.
The RMGT 7 Series press offers the exceptional reliability and advanced features needed to respond to this trend. With advanced automatic systems that shorten make-ready time and high-speed printing at up to 16,000 sheets per hour*, these high-performance offset presses boost productivity and optimize production efficiency for diverse short-run printing. The RMGT 7 Series press delivers top performance for a wide range of printing work, providing crucial support for success in a competitive market.
* The maximum printing speed of the RMGT 7 (790PF model convertible perfector) is 15,000 SPH.
Various automatic systems and labor-saving functions shorten make-ready time. The key to higher productivity for diverse short-run printing is shorter make-ready times. With Program Inking for quick and easy color setting, an automatic plate changing system and automatic cleaning devices, the majority of make-ready work is fully automated.
The SPC semiautomatic plate changing system comes as standard and allows plates to be changed quickly and accurately. The operator merely sets the plate on the positioning pins and presses the button for plate changing. Plate changing can be automated with the Smart-RPC* fully automatic simultaneous plate changing system or RPC* fully automatic plate changing system, which can be combined with Smart Make-ready functions* so that blanket cleaning, preset inking, and test printing are also performed automatically for even greater work efficiency.
The pre-press data is analyzed by the PPC Server III (or Ink Volume Setter)* to calculate the image area ratio. Based on the image area ratio data, the PCS-G print control system automatically selects the conversion curve for each color, sets the opening of the ink fountain keys and controls the ink rollers.
The PPC Server III is for CIP3/CIP4 (PPF) compatible pre-press systems and the ink. Volume Setter is for PS compatible pre-press systems.
Ink is automatically supplied to match the print image. After the set number of sheets have been printed, the ink on the rollers is automatically returned to an even state to move smoothly on to the next job.
The automatic cleaning devices (standard for the blanket and optional for the ink rollers) can be centrally controlled from the PCS-G print control system, including setting the start of cleaning for each printing unit and selecting the cleaning pattern according to the amount of cleaning required.
A printing press is comprised of many different mechanisms and components. Print quality depends on their precision and quality. Press mechanisms with micron-level precision ensure consistent print quality and excellent color reproduction. Strong, durable, high-precision construction is key to maintaining uncompromising print quality over long years of use.
The print units have a double-diameter impression cylinder and double-diameter transfer cylinder. These large, curved cylinders minimize flapping and ensure stable sheet transport even when printing on heavy stock.
The high performance of the ink fountain enhances the ink control precision to match the image with greater accuracy. The motor-driven ink fountain rollers are programmed to automatically operate in sync with the print speed, enabling a steady supply of ink.
The R-matic continuous dampening system assures a uniform supply of moisture on the plate surface to reproduce sharp dots, glossy solids and finely detailed text. This system also allows for non-alcohol printing. It is easy to switch between integrated-mode and separated-mode from the touch-panel in order to exactly match the image and characteristics. The R-matic-d* continuous dampening system with remote ON/OFF hickey removing function greatly reduces hickeys on plates by using a drive mechanism for the water form roller creating a rotational speed difference between the water form roller and plate cylinder.
A torsion bar type double spring gripper mechanism is used for all of the gripper shafts. Reliable sheet gripping increases registration accuracy for both low-speed and high-speed printing on everything from thin to heavy stock.
The use of cylinders, supported by ultra-precision bearings, precision induction-hardened helical gears, and special cast-iron side frames, offer solid support to these components. This ensures the highest durability and accuracy over a long period of time.
A print shop must be able to print on many different types of substrates to meet diverse needs and to expand the range of work that can be performed. Optional advanced devices ensure stable feed and transport for all types of substrates, from thin paper to thick stock and even film and synthetic substrates. Models with convertible perfecting devices boost productivity for double-sided printing.
The RMGT 790 model is equipped with a V-type feeder, the same high-speed, high performance feeder as RMGT 10 Series presses. From thin sheets to thick cardboard stock (straight printing models only), sophisticated air management technology ensures each sheet is precisely fed even during high-speed runs.
(The V-type feeder’s minimum sheet size is 11.41” x 16.14” (290 mm x 410 mm). An original type feeder option is available with a minimum sheet size of 7.87” x 10.98” (200 mm x 279 mm.)
When the movable shell-type skeleton transfer cylinder and air guide plate is installed, the optional pneumatic side lay device and a special sheet printing set makes it possible to print on a wide range of substrates, including non-absorbing materials such as metalized paper and film. Presses with thick cardboard printing specifications (straight printing models only) can handle stock as thick as 0.8mm.
Equipped with a de-curler, vacuum wheels driven by an independent motor and an air blower, the delivery section ensures stable sheet piling even when changing settings, such as the print speed or substrate thickness.
Switching between straight printing and perfecting is performed by remote control on the touch panel display of the PCS-G print control system. The operator inputs the sheet size and printing mode and then simply presses “Start”. The open/close timing of the convertible perfecting device grippers, the various cylinder phases, and the position of the vacuum hold down device are automatically switched in less than 2 minutes with no need for tools, greatly shortening make-ready time.
For easy control of increasingly advanced and complex presses, the latest operation interface has been equipped to support print professionals. Allowing easy operations is unique to RMGT and another of our proven operator-friendly performance features
The PCS-G print control system acts as a print control center providing centralized management of entire processes from make-ready to print completion, including ink density adjustment, registration, color adjustment, water control, print settings, cleaning and other operations. It also allows centralized management of operation and maintenance information such as maintenance history and press operation logs.
The one-touch nip pressure adjustment position cue function and automatic roller nip pressure checking function vastly reduces the amount of labor required during maintenance work. Nip checking is remarkably easier on the press with the nip checking mode that prints actual nip width on a single sheet pass.
The optional PDS-E SpectroJet* and PDS-E SpectroDrive* printing density control systems use a spectrophotometer to measure the color bar on a printed sheet and calculate the correction values as the difference between the printed sheet and OK sheet and ink key opening and closing is automatically controlled for much faster color adjustment. A preset number of sheets are also sampled and measured during printing; this data is fed back to the PCS-G to minimize density fluctuations and maintain consistent printing quality from start to finish.*Option
MIS connection software*1 connects a CIP4-JDF compatible MIS (management information system) and a compatible press*2 for real-time printing process management. The software also enables real-time exchange of CIP4-JDF format data on job instruction (job name, number of sheets printed, sheet size, etc.) between the MIS and PCS-G. The Print Job Manager*1 press operation control system connects compatible presses*2 via a network to manage the production schedule and transmit printing job data. It also collects on press operating status in real time and automatically generates production analysis data.
UV printing enables high-value-added printing. By combining various surface treatment techniques with UV print-compatible substrates and ink, new types of printed materials can be created that are extremely attractive and offer high added value. Various print system configurations are available for creating high-value-added print work to meet diverse needs.
Both aqueous varnish coating and UV varnish coating can be performed in-line after printing. In addition to increasing the added value of printed materials by protecting the surface and creating a lustrous finish, varnish coating can also shorten work lead times by reducing the time required for drying the printed sheets. A universal clamp makes it possible to perform either full-surface or spot varnish coating. A blanket (aluminum bars) and a resin print plate can also be installed. With a movable varnish coating unit, the coating cylinder and anilox roller can be raised upward when not in use to prevent scratching on the printed sheets. A safety guard between the main press unit and coating cylinder enables maintenance work, such as cleaning the coating cylinder or changing the blanket, to be performed even during printing to reduce make-ready time.
Select from infrared, UV, or LED-UV curing units. Combining a curing unit with the coating unit not only provides instant curing, but also enables high-value-added work such as printing on film or metalized paper, as well as chemical embossed printing. The range of special printing capabilities can be expanded even further by installing an inter-deck UV curing unit over the impression cylinder on each unit or over the convertible perfecting device.
RMGT is the first press manufacturer worldwide to offer LED-UV curing systems for commercial-scale sheet-fed offset printing. RMGT continues to lead the industry in this area by improving and developing its curing system featuring outstanding environmental performance.
Power consumption of the LED-UV curing system is only 10% that of a conventional UV lamp system*. Also, the need for standby power is eliminated by the instant on/off of LED-UV lighting, providing substantial energy savings.
A conventional UV lamp system’s light source lasts approximately 1,000 to 3,000 hours*, but the LED-UV system’s light source has a long life of approximately 15,000 hours. Therefore, a conventional UV lamp system remains lit in a standby mode during make-ready work, shortening its life, while the LED-UV system remains completely off so light source life is unaffected.
* Life span will vary according to usage conditions such as frequency of being lit/unlit.
LED-UV operates at a UV wavelength where no ozone is generated, eliminating the ozone odor peculiar to UV printing. The minimal heat generated during curing reduces thermal impact on the printed sheets and eliminates the need for an exhaust duct.
The growing popularity for the LED-UV curing system has led to a wider selection of inks, varnishes and substrates. Various types of high value-added printing can be performed using different press configurations and materials, including varnish coating and printing on special substrates.
*Drying performance will vary according to the type of substrate, ink, varnish, curing unit, print speed, etc.