
What truly distinguishes digital printing from traditional printing is the ability to print every page differently. This is something that offset presses – including DI presses – can- not do. Offset presses can only print exact replicas of the same sheet, again and again.
The digital colour presses that dominate the market now – and for the foreseeable future – are all toner based. They utilise electrophotography, either with liquid toners (Indigo), or dry toners (IBM,
The market for colour print can be split into segments defined by run length and specific applications. The suitability of different printing technologies to these segments is as follows:
| Digital | Direct | Conventional |
| colour | imaging (or DI) | offset |
Segment/application | printing | offset presses | printing |
Yes | No | No | |
Customised/personalised documents | Yes | No | No |
Vert short runs (<500) | Yes | No | No |
Short runs | Yes | Yes | No |
Moderate runs | No | Yes | Yes |
Long runs | No | No | Yes |
Very long runs (50,001+) | No | No | Yes |
With the many benefits of digital colour printing (described later in this section), we are seeing a strong swing toward shorter runs. The table below shows that in 1998, 28% of all print volume in the US was short run, but in less than 20 years it is expected to account for almost half of all print volume.
| 1998 | 2000 | 2010 | 2020 |
Ultra Short Run (1) | 8% | 10% | 13% | 14% |
Very Short Run | 10% | 13% | 15% | 16% |
Short Run | 10% | 13% | 15% | 17% |
Moderate Short Run | 17% | 15% | 16% | 16% |
Moderate Run | 14% | 13% | 11% | 11% |
Average Run | 12% | 9% | 8% | 7% |
Moderate Long Run | 11% | 11% | 9% | 8% |
Long Run | 9% | 7% | 6% | 5% |
Very Long Run (750,000+) | 9% | 9% | 7% | 6% |
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| 100% | 100% | 100% | 100% |
Source: Professor Frank Romano, Graphic Media Briefing, 29 March 2001.
DocuColor 2000 series design guide
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