Patent ID: 8439345

Claim:
An image forming device having a feed route to feed a recording medium from a feed tray to a transfer route and forming an image on the recording medium transferred on the transfer route, the device comprising: a pickup roller configured to pick up the recording medium stacked on the feed tray and to send out the recording medium to the feed route; a registration roller configured to adjust a timing to send out a recording medium to the transfer route; an intermediate transfer roller group configured to transfer the recording medium between the pickup roller and the registration roller within the feed route; an operation pattern storage unit configured to store operation patterns relating to the pickup roller, the intermediate transfer roller group, and the registration roller; and a controller configured to independently control transfer speeds of the recording medium at respective points where the pickup roller and the intermediate transfer roller group are disposed based on the operation patterns, wherein the operation patterns are set based on a relationship between a distance on the transfer route among at least two rollers in the intermediate transfer roller group and a length of the recording medium in a transfer direction.