The PhotographyBlog reviews the large format color printer Canon iPF6100. With that big machine you can print A1 format posters. The Canon iPF6100 starts at $2,765 at these stores.

Quote from the review: "The new Canon iPF6100 is a large format printer that uses a 12-colour pigment inkset and can print up to A1 in size.
The iPF6100 can produce a borderless A1 glossy print in less than 4 minutes, and incorporates a built-in color calibration system. A wide color gamut is offered by the dual-head 12-colour LUCIA II pigment ink system which packs 30,720 nozzles into two 1” print heads. Can the new Canon iPF6100 compete with the likes of the HP Z3100?"
Read the full review on PhotographyBlog. Buy Here.