A belt drive includes a belt and at least one pair of spaced apart rails extending in a first direction and defining a gap. The belt is aligned with the gap and to be driven in an endless loop with the belt including a first movable portion external to the gap on a first side of the rails and a second movable portion biased to be recessed within the gap on an opposite second side of the rails. A rewritable display medium is releasably engageable in a sandwiched position between a slidable contact surface of the rails and a first segment of the second movable portion external to the gap to move the display medium in the first direction for contact-less imaging via a unit spaced from the rails.

A printing apparatus has a conveyance roller configured to convey a sheet in a first direction, an encoder provided at the conveyance roller, a head having a plurality of nozzles aligned in a second direction intersecting with the first direction and being configured to jet liquid to the sheet which is conveyed in the first direction by the conveyance roller and a controller having a power circuit configured to apply voltage to the head for jetting the liquid. The controller is configured to: determine a jetting frequency for the head based on a signal outputted from the encoder; and change an output voltage of the power circuit depending on the determined jetting frequency.

A printing apparatus has a conveyance roller configured to convey a sheet in a first direction, an encoder provided at the conveyance roller, a head having a plurality of nozzles aligned in a second direction intersecting with the first direction and being configured to jet liquid to the sheet which is conveyed in the first direction by the conveyance roller and a controller having a power circuit configured to apply voltage to the head for jetting the liquid. The controller is configured to: determine a jetting frequency for the head based on a signal outputted from the encoder; and change an output voltage of the power circuit depending on the determined jetting frequency.

A cleaning pad can be attached onto an inner surface of a transport belt so the cleaning pad can move with the transport belt along hardware of a marking system, including support rollers and a marking platen to remove ink from the marking platen and support rollers of the rendering device as the transport belt cycles through its typical path within the rendering system.

A cleaning pad can be attached onto an inner surface of a transport belt so the cleaning pad can move with the transport belt along hardware of a marking system, including support rollers and a marking platen to remove ink from the marking platen and support rollers of the rendering device as the transport belt cycles through its typical path within the rendering system.

A digital printing device, comprising a suction transport means (1). The suction transport means (1) comprises a transport belt (11) used for transporting a sheet material. At least one first suction box (14), which is used for sucking the sheet material on the transport belt (11) by means of negative pressure during transport, is provided in the space defined by the transport belt (11). Multiple first suction holes in communication with the first suction box (14) are provided on the transport belt (11). At least one side of the first suction box (14) is provided with a movable door (15) which moves in a direction perpendicular to the transport direction to make the first suction box (14) fit the sheet material to maintain a negative pressure state. Using the transport belt (11) during printing, the digital printing device avoids the problem of poor registration accuracy, and improves the printing effect.

A digital printing device, comprising a suction transport means (1). The suction transport means (1) comprises a transport belt (11) used for transporting a sheet material. At least one first suction box (14), which is used for sucking the sheet material on the transport belt (11) by means of negative pressure during transport, is provided in the space defined by the transport belt (11). Multiple first suction holes in communication with the first suction box (14) are provided on the transport belt (11). At least one side of the first suction box (14) is provided with a movable door (15) which moves in a direction perpendicular to the transport direction to make the first suction box (14) fit the sheet material to maintain a negative pressure state. Using the transport belt (11) during printing, the digital printing device avoids the problem of poor registration accuracy, and improves the printing effect.

In a method of operating an ink jet card printer, which includes a transport belt, a print unit including an ink jet print head, a sensor and a gantry, a card is loaded onto the transport belt along a processing axis using an exposed surface of the transport belt. The sensor and the ink jet print head are moved relative to the card using the gantry. A current position of the card is detected using the sensor. An image is printed to the card using the ink jet print head when the detected current position of the card indicates that the card is supported on the transport belt in a print position. Printing is interrupted when the detected current position of the card indicates that the card is not in the print position.

In a method of operating an ink jet card printer, which includes a transport belt, a print unit including an ink jet print head, a sensor and a gantry, a card is loaded onto the transport belt along a processing axis using an exposed surface of the transport belt. The sensor and the ink jet print head are moved relative to the card using the gantry. A current position of the card is detected using the sensor. An image is printed to the card using the ink jet print head when the detected current position of the card indicates that the card is supported on the transport belt in a print position. Printing is interrupted when the detected current position of the card indicates that the card is not in the print position.

An ink jet card printer includes an ink jet print head, a gantry, and a card feeder. The ink jet print head is configured to perform a print operation on a card supported in a print position along a processing axis. The gantry is configured to move the print head through a print zone. The card feeder includes a feeder frame, a first pinch roller pair, and a lift mechanism. The first pinch roller pair is supported by the feeder frame and is configured to feed individual cards along a card feed axis. The lift mechanism is configured to move the feeder frame and the first pinch roller pair between a lowered position, in which the card feeder is displaced from the print zone, and a raised position, in which at least a portion of the card feeder extends into the print zone.