In an example, a print media transport apparatus comprises a plurality of pallets having a self-propulsion mechanism, and being to support print media. The pallets may circulate on an endless track comprising a printing zone, a descending zone and an ascending zone. A controller may control the self-propulsion mechanisms of the pallets such that a pallet on the descending zone is at least partially supported by another pallet which is ahead on the track, and a pallet on the ascending zone is at least partially driven by pallet which follows on the track.

A magazine for packs of blanks includes a vertical channel configured for inserting and extracting packs of blanks, a succession of groups of supporting parts movable between a retracted position to allow the packs of blanks to move along the channel towards a portion under the supporting part, and an at least partly extracted position, in which the supporting part intercepts a pack of blanks moving down the channel and provides a steady support for the pack of blanks, and transmission means configured to automatically move each supporting part from the retracted position to the at least partly extracted position when the supporting part immediately below it intercepts a respective pack of blanks, thereby defining the steady support.

An image forming apparatus includes an image forming device, a transfer section, a plurality of sheet feed trays, processing circuitry, and a detector. The image forming device forms an image. The transfer section transfers the image onto a sheet. The plurality of sheet feed trays store sheets and supply the sheets from sheet feed ports to the transfer section. The processing circuitry switches sheet feeding from one sheet feed tray in use to another sheet feed tray when the sheets run out in the one sheet feed tray in use. The detector detects a remaining amount of sheets in the one sheet feed tray in use. The processing circuitry enlarges spacing between images formed by the image forming device when the remaining amount of sheets in the one sheet feed tray in use is equal to or less than a threshold value, based on a detection result of the detector.