The compensator/feeder assembly mounts a printer bar which is positioned in a confronting relationship with the printhead when the assembly is in the printing position.

A method and system of controlling at least one printbar in a printing system are described.

A web press system including a first printbar, a first sensor, a second printbar, a second sensor, and a controller.

The thermoprinting strip 24 is disposed in a stationary manner in the housing 1 and the transport roller 19 can be lifted away from the thermoprinting strip 24.

A first image including a reference pattern (240A, 240B) is generated on a print medium (150) with a first printbar (160).

The colour jets of each printing bar (24.1 to 24.20) produce a printing pattern of a definite colour according to the software control.

This position is used to configure nozzle data for a second image to be generated on the print medium by the second printbar.

The first printbar prints first user content on a first side of a web of media.

A second printbar prints second user content on the first side of the web of media.

The reference pattern and the detected pattern are used to determine a position of the first image relative to a second printbar (190).

The second sensor senses the pattern on the web of media and provides second sensor data as the second printbar prints the second user content.

The first sensor senses a pattern on the web of media and provides first sensor data as the first printbar prints the first user content.