respectively of the end pcb support 91 see fig2 the support member 112 is attached to the rear surface of the end pcb support 91 by engaging a tab 112 c with a slot region 91 c on the rear surface of the end pcb support 91 see fig1 b and the region 115 c of the connector arrangement 115 is retained at upper and lower side surfaces thereof by clip portions 112 d of the support member 112 so as that the connection regions of the region 115 c are in substantially the same plane as the edge contacting regions on the underside of the end pcb 90 thus when the end plate 110 is attached to the end of the casing 20 an abutting arrangement is formed between the recessed portions 112 b and 91 b similar to the abutting arrangement formed between the recessed portions 91 b of the adjacent supports 91 of fig2 accordingly the connecting member 102 can be accommodated compactly between the end pcb 90 and the region 115 c of the connector arrangement 115 this arrangement is shown in fig3 b and 33c for another type of connector arrangement 125 with a corresponding region 125 c which is described in more detail below with respect to fig3 38 a and 38 b this exemplary manner of connecting the data connection portion 117 to the end pcb 90 contributes to the modular aspect of the present invention in that it is not necessary to provide differently configured pcbs 90 to be arranged at the longitudinal ends of the casing 20 and the same method of data connection can be retained throughout the printhead.