Time Warner has tapped Joseph A. Ripp as the new chief executive officer of  Time Inc., its publishing spinoff.

Ripp will assume the new post in September and replace current CEO Laura Lang, who told Time Warner that she did not want to continue in her current role after the publishing unit was spun off.

Time Warner Inc. Chairman and CEO Jeff Bewkes announed the appointment. Ripp,  a former Time Inc. and Time Warner exec, is currently the CEO of OneSource Information Services.

Time Warner announced plans in March for the separation of Time Inc. from Time Warner to be an independent publicly traded company.

Ripp began his media career at Time Inc. in 1985 as assistant comptroller and was elevated to senior VP, CFO and treasurer in 1993. He then served as exex VP and CFO of Time Warner Inc. from 1999 to 2001 when he became CFO of America Online.

In 2002, Ripp was named vice chairman of AOL until he left the company in 2004. He then held exec posts at Dendrite International, Journal Register Co, Cannondale Investments before joining OneSource last year.