Modular printer system with logically and physically interconnected modules

1. A modular printer system that comprises:

a number of elongate, substantially cylindrical modules that are capable of being logically and physically connected together, the modules including a printer module comprising:

a body that defines a print media feed path extending from an input end to an output end and a pagewidth printing mechanism positioned adjacent the media feed path between the input end and the output end for printing onto print media in the media feed path;

at least one modular connector arranged on a longitudinal end of the body to permit at least an image processing module to be attached to the body; and

a communications bus that interconnects the printing module and the image processing module to facilitate communication between the printing mechanism and the image processing module for receiving print data.

2. A modular printer system as claimed in claim 1 , wherein the body is dimensioned to be generally pen-sized.

3. A modular printer system as claimed in claim 2 , in which the body defines a feed opening such that print media can be positioned in the input end of the print media feed path.

4. A modular printer system as claimed in claim 1 , in which the pagewidth printing mechanism incorporates a drop-on-demand pagewidth inkjet printhead.

5. A modular printer system as claimed in claim 4 , in which the pagewidth inkjet printhead is configured to generate 1600 dpi resolution with bi-level dots in up to four colors to produce a printed page of a particular width.

6. A modular printer system as claimed in claim 1 , in which the at least one attachment is configured to permit an image sensing module to be connected to the body, the communications bus being configured to receive image data from the image sensing module and the printing mechanism being configured to generate print data representing said image data.