Although it was very cold, the weather was fine for the two-day “New Product Release / OffsetOnDemand Open House” held February 3-4, 2011 at the Komori Graphic Technology Center (KGC) in Komori’s Tsukuba Plant. This open house featured OffsetOnDemand demonstrations for extremely short runs with tight delivery deadlines on two Komori presses: the Lithrone G40 (GL-440), making its worldwide debut of the as the new upgraded model grade in the Lithrone Series, and a Lithrone S26 (LS-426). Both machines were equipped with the Hybrid UV (H-UV) system and the KHS-AI integrated control system.
The open house was run twice each day, in the morning and afternoon, over the two days, for a total of four performancesdemonstrations. A total of 188 customers attended the open house, coming from both Tokyo and nearby prefectures as well as distant places such as Kagoshima Prefecture, making the gathering a great success.
The first demonstration used the Lithrone S26 (LS-426). The emcee for the demonstration was Nakajima of KGC and the technical explanation was provided by KamiJin, vice director of the Center. Two jobs were run in each demonstration.
* This machine was equipped with one ozone-less free lamp (120W), and the maximum printing speed for production printing was 16,000 sheets per hour.
< Demonstration Highlights >
1) 20Matching through the fusion of the H-UV system and the KHS-AI system.
2) Reduced number of changeovers, reduced number of plates, reduced changeover time, and reduced amount of paper for print preparation due to ganging of different images (one A3 image and two single A4 images for a total of three images).
3) Extremely fast drying from the H-UV system and finishing performed immediately after printing.
< Demonstration Content >
Job 1 used coated paper, and four-color printing on the front side of the sheets was performed produced after registration adjustment and color matching. In production printing, 200 sheets were printed. Then job changeover (removing ⇒ automatic blanket washing ⇒ plate changing ⇒ pre-inking ⇒ changing paper to reverse side) was performed and Job 2 was run. In Job 2, four-color printing was performed done on the back side of the sheets used in Job 1. After measuring and confirming the color on the 20th sheet of 20 sheets of initial printing, 200 sheets were printed and then guillotined and folded.
After the completion of Job 2, printing samples from the sheets that had been guillotined and folded were distributed to the attendees, allowing them to confirm for themselves the power of OffsetOnDemand.
< Images of Printing >
The event then moved on to the demonstration of the new Lithrone G40 (GL-440). The emcee for the demonstration was Nakajima of KGC and the technical explanation was provided by KamiJin, vice director of the Center. During the demonstration, Kobashi of the Development Department provided a technical explanation of the development concept of the new Lithrone G40, its mechanisms and its specifications by using video. Two jobs were run in each demonstration.
* This machine was equipped with one ozone-less free lamp (160W), and the maximum printing speed for production printing was 16,500 sheets per hour.
< Demonstration Highlights >
1) The concept of the Lithrone G40
2) Technical explanation of the Lithrone G40
3) The effectiveness of reduced plate costs due to work and turn printing
4) The low initial cost, reduced power consumption, ability to meet tight delivery deadlines, and eco-friendliness of the H-UV system
< Demonstration Content >
Job 1 used paper with a rough gloss finish, and four-color printing on the front side of the sheets was performed after registration adjustment and color matching. In production printing, 200 sheets were printed. Then four-color work-and-turn printing (printing the same image on the front and back sides) was performed without changing the plates. After checking the front-back registration, 200 sheets were printed in production printing. Then job changeover (removing ⇒ automatic blanket washing ⇒ plate changing ⇒ pre-inking ⇒ change of printing paper) was performed and Job 2 was run. In Job 2, four-color printing was performed on thick (0.5 mm) sheets. After initial printing, register adjustment and color matching, 200 sheets were printed in production printing.
After the completion of production printing for each job, printing samples were distributed to the attendees, allowing them to confirm for themselves the very fast drying, high print quality, and lack of odor.
< Images of Printing >
After the completion of the demonstrations, the customers were able to leisurely and carefully examine the machines and exhibited printing samples.
[Lithrone G40 Concept]
Based on Komori’s commitment to the environment, the Lithrone G40 is a newly developed high performance machine that concentrates the essence of Komori technologies on the theme of concern for the environment and ecology.
The ”GREEN”concept championed by Komori consists of three major pillars: clean, saving and safety. OffsetOnDemand, the ideal mode of printing for the next generation, supports completely new fields of business. OffsetOnDemand establishes a printing environment with greater scope and shortens working time. Komori conceives our mission as providing products and solutions that will produce better printed products that are both considerate of people and profitable for the company, which is good for the environment and a boon to both the market and society.
[Main Feature of Lithrone G40]
1) Stable high-speed operation with a sheet thickness range of 0.04 ~ 0.8 mm thanks to a new feeder and new delivery based on the feeder and delivery mechanisms of the Lithrone SX40.
2) High print quality and improved stability through adoption of the standard structural configuration of the Lithrone SX40.(benderless APC, flat clamping, transfer cylinder cocking, KHS-AI, air presets, etc.)
3) Higher register accuracy due to new clamp
4) Improved ease of operation and maintainability based on ergonomic design
[Main Specifications of Lithrone G40]
- Maximum printing speed (sph): 16,500
- Maximum sheet size (mm): 720 x 1,030
- Maximum printing area (mm): 710 x 1,020
- Sheet thickness range: 0.04 ~ 0.8 mm (no gripper pad height adjustment for 0.04 ~ 0.6 mm)
- Sheet thickness range with skeleton transfer cylinder: 0.06 ~ 1.0 mm (no gripper pad height adjustment for 0.06 ~ 0.6 mm)
- Plate size (mm): 800 x 1,030
- APC: Benderless APC
Komori hopes that this open house will be helpful to attendees in planning future equipment investment. We look forward to your continued patronage and support.





