50th Newspaper Production Conference
High Speed Rotary Presses, Status and Issues - Will Materials and Auxiliary Equipment Keep Up (Extract) |
 Development of Color Top CD |
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Reduce power consumption |
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Improve workability; improve work environment |
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Printing: Re-investigating development of high speed DIP inking system and roller arrangement |
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Folder: Development of newspaper jaw folder and 700 Series (rotary) folder |
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Reelstand: Development of high speed paster system |
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Development of SDS-CD (Super Driver System-Couple Drive) |
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| High Speed Test Printing of Color Top 7000CD at Shinano Mainichi Newspaper |
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| Date of test |
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2003-Feb.- 8th - Preparation |
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2003-Feb.- 9th - Testing |
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2003-Feb.- 10th - Return to original setup |
| Location of test |
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Nagano Production Center of Shinano Mainichi Newspaper, Engineering Bureau |
| Press tested |
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Printing folder/units 10F-12T-13T used |
| Printing speed |
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96,000 cph |
| Printing condition |
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16 pages, all color, single delivery |
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Regular, existing production materials used |
| Copies printed |
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55,000 copies |
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Folder |
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Change torque setting of each torsion bar |
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Electrical |
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(1) Change Main Control Panel program |
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(2) Change setting values of operation parameters |
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Mailroom devices |
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Change setting values of various parameters |
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Print quality |
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Able to confirm that quality is same as printing at 85,000 cph |
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Image density |
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In accordance with Japan Color standards |
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Register |
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Within ± 3/100mm |
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Dot gain |
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Standard values |
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Noise & vibration |
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Almost the same as during 85,000 cph |
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| Split-Arm Reelstand |
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By using a split arm reelstand, it is possible to mount various width rolls. |
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Simplified maintenance due to use of air-cooled center brakes. |
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Tension fluctuation after pasting is controlled with roller brush. |
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| Energy Savings of a Shaftless Web Offset Press |
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| Power Outage During Shaftless Printing |
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During power outage, the press’s Permanent Magnet Synchronous Electric Motor (SM) acts as a generator as it slows down and supplies the press’s intertial energy to the folder, infeed and to each drag roller thus allowing the press to come to a halt without a web break during power outages. |
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