It seems that Japan's government revised its "Electrical Appliance and Material Safety Law" back in April 2001, and added a stipulation that items authorized under the country's old law (the "Electrical Appliance and Material Control Law") couldn't be sold anymore, but granted those products a five-year grace period. Well, if you check your convenient wall calendar, you'll see that the five-year period is about to end, which means that as of April 1, pretty much any electronic gear sold before April 1, 2001 can't be legally resold in Japan.
Certain items are exempt, as are exports. Does this, however, mean the end to all of my horrible secret pleasures of collecting 80's electronics?
http://www.engadget.com/2006/02/22/japan-bans-old-electronics-as-of-april-1