Abstract: A printing apparatus has a series of inkjet print heads spaced from one another in a transport direction. A continuous belt driven around a roller system is used to feed sheet media successively to the print heads so that a partial image printed by one print head is overprinted at a subsequent print head with registration of the partial images. A sheet medium is caused to become electrostatically tacked to the belt by passing the sheet past a charging device. Movement of the belt is tracked by a tracking sub-system and operation of the print heads is coordinated with the tracked belt movement to achieve precise registration of the partial images.

Abstract: Apparatus for cleaning a sheet medium has a cleaning station and a drive mechanism for driving the sheet medium in a transport direction through the cleaning station. The cleaning station has rotary cleaning brushes at opposed surfaces of the sheet medium for brushing the surfaces of the sheet medium to dislodge particulate matter. The brushes are contained in a plenum from which the particulate matter is removed by developing a partial vacuum at the plenum.

Abstract: A printing apparatus has a series of inkjet print heads spaced from one another in a transport direction. A continuous belt driven around a roller system is used to feed sheet media successively to the print heads so that a partial image printed by one print head is overprinted at a subsequent print head with registration of the partial images. A sheet medium is caused to become electrostatically tacked to the belt by passing the sheet past a charging device. Movement of the belt is tracked by a tracking sub-system and operation of the print heads is coordinated with the tracked belt movement to achieve precise registration of the partial images.

Abstract: A modular printhead is disclosed having the ability to separate, leaving a first collection of predetermined layers relatively permanently affixed to a print engine while a second collection of predetermined layers resides in a relatively disposable component thereof. The modular printhead includes a first printhead component having at least a first electrode and a second electrode. There is additionally a second component of the printhead. The second component can have a third electrode. The first printhead component of the printhead demountably presses against the second component, held in place by at least one fastening mechanism.