Patent ID: 7195331

Claim:
An ink jet printer comprising a print head with a connection part ( 3 ) of the print head to connect the electrical and hydraulic terminal parts of the print head to an umbilical connected to the printer hydraulic circuits and to electrical conductors, the umbilical being provided with a terminal connection part ( 1 ) formed by hydraulic pipe terminations and electrical conductor terminations, characterised in that the connection part ( 1 ) of the umbilical comprises first positioning means ( 12 , 13 , 14 , 15 , 17 , 18 , 20 – 23 , 25 ) mechanically connected to the connection part ( 1 ) of the umbilical to position the electrical terminations in the connection part ( 1 ) of the umbilical; second positioning means ( 12 , 14 , 15 , 16 , 25 ) mechanically connected to the connection part ( 1 ) of the umbilical to position the hydraulic terminations in the connection part ( 1 ) of the umbilical; third positioning means ( 12 , 28 ) mechanically connected to the umbilical, and in that the connection part ( 3 ) of the print head is provided with: a fixed connector ( 31 ) of a body ( 34 ) of the print head, this fixed connector ( 31 ) comprising hydraulic pipe terminations ( 36 ) from a body of the print head for which one opening ( 36 ) is at a determined position on the fixed connector ( 31 ), and electrical conductor terminations ( 39 ) positioned mechanically with respect to the fixed connector ( 31 ); fourth positioning means ( 31 , 48 ) mechanically connected to the connection part ( 3 ) of the print head; and in that in a position in which the umbilical and the print head are connected, the third ( 12 , 28 ) and fourth connection means ( 31 , 48 ) cooperate to position the connection part ( 1 ) of the umbilical with respect to the connection part ( 3 ) of the print head, electrical terminations ( 19 ) of the umbilical positioned in the connection part ( 1 ) of the umbilical by the first positioning means ( 12 , 13 , 14 , 15 , 17 , 18 , 20 – 23 , 25 ) being in the said connected position of the umbilical and the print head in contact with terminations ( 39 ) of electrical conductors mechanically positioned with respect to the fixed connector ( 31 ), and hydraulic terminations ( 24 ) of the umbilical positioned by the second positioning means ( 12 , 14 , 15 , 16 , 25 ) of the umbilical being located in line with the hydraulic terminations ( 36 ) of the fixed connector, a leak tight communication being set up between the hydraulic terminations ( 24 ) of the umbilical and the hydraulic terminations of the pipes from the print head body ( 34 ) thus formed.