Wikipedia is a great source of information but for those of you who can't be bothered reading too much and just want to get a quick handle on blu-ray disc technology, we found this Youtube video. The video seems to be a robot reading the Wikipedia definition of what a blu-ray disc actually is.
The transition from DVD to Blu-Ray in the consumer market definitely hasn't developed at the same lightening pace we witnessed when the market moved away from VHS to DVD, but it is definitely steadily getting there. We should be wary of making this comparison too since replacing your DVD player with a Blu-Ray player doesn't have the same grave implications for your video collection that the move from VHS to DVD carried.
The Difference Between Replication & Duplication Explained, October 2014.
The Difference Between CD Replication & CD Duplication;
The Difference Between DVD Replication & DVD Duplication;
The Difference Between Blu-Ray Replication & Blu-Ray Duplication
We get asked about the difference between disc replication and disc duplication a lot. Here we will give a short and simple explanation, without going off on any highly technical tangents.
Disc Replication: It's the Cheapest and the Best Way to Produce Discs... Sort of
CD, DVD, and Blu-Ray replication is essentially an industrial process for the production of relatively high numbers of discs (bulk replication). On these higher quantities, meaning 500 or more units, it is usually the most cost effective way of producing discs and associated disc packaging. Additionally, many within and without the industry argue that replication is the superior method of producing discs in terms of quality. Hmmmmm...
Those of us in the industry who have an understanding of the various processes employed in duplication, might make some objections to the above even if we would probably agreeing with the overall case. For one, it should be noted that developments in disc duplication tehcnologies over the last few years (specifically on the disc printing side) have reduced and in many cases obliterated the assumed gap in quality between replicated and duplicated discs.
Moreover, even on quantities of 500 units and more, duplication is often competitively priced and can often work out less costly for the customer. It's worth stressing that costs in many cases will be significantly affected by the choice of packaging involved (if any), how that packaging is printed and produced, and ultimately who produces it.
Disc Duplication: An Evolving Process
Where disc replication involves stamping data to discs using a glass master, disc duplication relies on a process called burning. The former is based on impressing 'pits' and 'lands' on to the disc substrate, where the latter involves manipulating dyes with heat (hence the term burning). In both cases, laser light is bounced on to the disc and its reflection interpreted as part of the disc reading (as opposed to writing) process. There is no scientific reason for one process being more reliable than the other in terms of the integrity of the data imposed and in both cases there is room for error.
A depiction of the Lands and Pits created during the disc replication process.A spiral starting in the centre and working ourwards would typically include trillions of these Lands and Pits. As the disc turns, the laser light which is in a fixed position is directed at the spiral of data; how the laser light reflects back to the sensor will be determined by the presence of a Land or Pit, thereby producing a digital data-stream. A DVD simply uses a tighter spiral of data with a more accurate laser and blu-ray goes one step further in these respects.
The technology and equipment available to disc duplication companies has improved radically over the last 15 years. This compares favourably to the decidedly inflexible nature of the disc replication process with its strict demands on quantities, standards, and specifications.
15 years ago the disc duplication industry was in its infancy. Out first experiences in the industry involved the use of bog standard inkjet printers which we used to print untold numbers of sticky labels. On the data burning side, I remember we paid over £600 for a duplicator that would copy one single DVD at a time. How things have changed. Now we can load literally hundreds of discs on to automated systems that both burn and print the discs to exceptionally high standards.
In terms of print quality, there is a good case for saying duplicated discs have caught up. Inkjet printers offer higher resolution than litho or screen printing systems and can definitely compete in terms of colour vibrancy. Where inkjet duplicated discs often struggle is in terms of consistency and finishing but there have been big improvements made here too. Thanks to competition and innovation in the recordable disc manufacturing industry, for example, it is now possible to buy coated discs that are essentially waterproof coated despite being printed on digital inkjet printers.
This is our first ever attempt (ever!) at contacting people on our email list with something resembling a marketing newsletter. The reason for doing so is simple -- Easy Multimedia have a bunch of new products and services that we think you might be interested in -- no snoring at the back!
Anyway, don't worry, we aren't going to do these email marketing things very often (about once a month at most) and when we do it will be very specically about Special Offers that we introduce on a monthly basis... You can also very easily unsubscribe using the link below.