The Cambridge, U.K.-based ink jet printing technology group Xaar plc has announced record revenues and profits for year-end 2000.      Final revenues for this period  were more than $33 million. According to the company, this figure represents a 50 percent increase over 1999 revenues of about $22 million. In addition, preliminary audited results indicated Xaar’s 2000 profits to be $3.9 million. Compared to 1999’s profits of $0.73 million, this figure marks a five-fold increase in profits.   ...