Seiko personal colorpoint 4104 supplies

Hello, We used to make printed t-shirts, caps, coffee mugs, etc using a seiko personal colorpoint 4104 from about 94-97. The place we bought it from went out of business, so I was hoping to find a supplier for the ink rolls, the t-shirt transfer paper, white decal paper, clear laminate, and some b4 sized paper for printing the mugs. Oh and some of that green glassy tape for taping the transfers to the mugs would be great too.

Any leads on a good place to buy blank coffee mugs, t-shirts and caps would be appreciated as well.

Also back then there was no way to print on black or dark colors, has that changed at all?

Thanks in advance!