What is the difference between a CD-R and a replicated CD-ROM?

A CD-R disc is manufactured to allow data to be copied (recorded) by a special device called a CD-R writer. The CD-R has a recording surface that uses a special dye that can be ablated by the laser in the writer. When writing to the CD-R disc, the laser burns the pattern of data into the dye on the recording side of the CD-R. There is a special grooved, spiral track that the laser follows when writing the data. A replicated CD-ROM is manufactured using an injection molding process that stamps the spiral track and data into the polycarbonate material at the same time. A reflective layer of aluminum is then spin coated onto the disc to allow for the laser in a standard reader to identify the spiral track and data layout. Once copied the CD-R disc functions exactly like a replicated CD-ROM disc.

When should I use CD-R and when should I use CD-ROM?

Generally speaking you will wish to use CD-R when your quantity to copy is relatively low. For orders up to 1,000 units, CD-R tends to be a cost effective way to produce a disc. On quantities larger than 1,000 units, replicated CD-ROM discs usually are less expensive to manufacture. Another reason to consider CD-R is turn around time. CD-ROM pricing on short turns tends to be more expensive. Your Diversified Systems customer service representative will be able to provide you with the best and most economical way to produce your job.

Why are the artwork specifications for silk-screening for CD-ROM different than CD-R?

This is caused by the difference in the molding process used to make both the CD-R and the CD-ROM. Both products are manufactured using injection cavity molds. Each manufacturer chooses the particular mold to use to make product. Slight differences in these molds may cause screen-printing specifications to vary. Make sure that you are using the correct templates and specifications when building your artwork for printing.

How quickly can I get my CD-ROM job processed?

Turn times for CD-ROM generally run from 3 to 15 days. Your turn time starts when master, necessary artwork, and all printed materials are received at the stamping facility. This day is identified in the industry as day 0. Your order should be ready to ship x days from day zero where x is the requested turn time. Usually weekends and holidays do not count toward turn time. Next day and 2-day turn times are available but not encouraged. Pricing for your CD-ROM job will be based partly on the turn time requested. You will usually pay more for jobs that are run in a faster turn time than those that are run in a slower time.

How will my discs be printed?

CD-ROM discs are generally printed using silk-screen techniques. You may have up to six color printing on your CD-ROM discs. Your pricing may be based on the number of colors printed. Because more setup time is involved as the number of colors increases, prices tend to increase with the number of colors printed.