Wikipedia
Instant camera
The instant camera is a type of camera with self-developing film. The most famous are those formerly made by Polaroid Corporation.
The invention of modern instant cameras is generally credited to American scientist Edwin Land, who unveiled the first commercial instant camera, the Land Camera, in 1947, 10 years after founding Polaroid Corporation.
In February 2008, Polaroid announced it would discontinue production of film, shut down three factories and lay off 450 workers.Associated Press February 8, 2008Graham, David, "", Toronto Star, April 3, 2008 Sales of chemical film by all makers have dropped by at least 25% per year in this decade, and the decline is likely to accelerate. Fujifilm is now the only remaining supplier of instant film in the United States. As of October 2009, Polaroid has announced it is bringing back its classic instant film cameras, after announcing last year that production was to be stopped.http://stuff.tv/News/Polaroid-classic-instant-film-cameras-to-make-a-comeback/13461/
Types of Polaroid instant cameras
Polaroid cameras can be classified by the type of film they use. The earliest Polaroids (pre-1963) used instant roll film, which has since been discontinued. Roll film came in two rolls (positive/developing agent and negative) which were loaded into the camera and eventually offered in three sizes (40, 30, and 20 series). Later cameras utilized "pack film," which required the photographer to pull the film out of the camera for development, then peel apart the positive from the negative at the end of the developing process. Pack film initially was offered in a rectangular format (100 series), then in square format (80 series). Later Polaroids, like the once popular SX-70, used a square format integral film, in which all components of the film (negative, developer, fixer, etc.) were contained. Each exposure developed automatically once the shot is taken. SX-70 (or Time Zero) film was recently discontinued but read more at » http://en.wikipedia.org/wiki/Instant+camera