Jenette Kahn, a former children's magazine publisher, replaced Infantino as editorial director in January 1976. As it happened, her first task even before being formally hired, was to convince Bill Sarnoff, the head of Warner Publishing, to keep DC as a publishing concern, as opposed to simply managing their licensing of their properties. With that established, DC had attempted to compete with the now-surging Marvel by dramatically increasing its output and attempting to win the market by flooding it. This included launching series featuring such new characters as "Firestorm" and "Shade, the Changing Man", as well as an increasing array of non-superhero titles, in an attempt to recapture the pre-Wertham days of post-War comicdom. In June 1978, five months before the release of the first Superman movie, Kahn expanded the line further, increasing the number of titles and story pages, and raising the price from 35 cents to 50 cents. Most series received eight-page back-up features while some had full-length twenty-five-page stories. This was a move the company called the "DC Explosion". The move was not successful, however, and corporate parent Warner dramatically cut back on these largely unsuccessful titles, firing many staffers in what industry watchers dubbed "the DC Implosion". In September 1978, the line was dramatically reduced and standard-size books returned to 17-story pages but for a still increased 40 cents. By 1980, the books returned to 50 cents with a 25-page story count but the story pages replaced house ads in the books.