Citing factors such as supply shortages and rising costs from overseas disc manufacturers, Memorex plans to increase CD-R and CD-RW media prices by 10 percent to 15 percent beginning January.

Manufacturing costs have increased 35 percent this year because of patent royalty fees, rising production costs for petroleum-based plastics used to make optical media, as well as transportation costs to deliver products to warehouse and retail facilities, Memorex said in a statement Friday. Until now, the company said, Memorex has absorbed all of these increases instead of passing them on to customers.

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