Inkjet print cartridge design to decrease deformation of the printhead when adhesively sealing the printhead to the print cartridge

• Main Authors: SCHAEFFER, SARA E, GUNTHER, MAX S
• Format: Patent
• Language: English; French; German
• Published: 22.12.1999
• Edition: 6
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

This disclosure describes an improved headland design for adhesively attaching a printhead to a print cartridge which reduces dimple in the nozzle member and the attendant nozzle trajectory errors. In a preferred embodiment, a nozzle member (16) containing an array of orifices (17) has a substrate (28) having heater elements (96,98) formed thereon, affixed to a back surface of the nozzle member. Each orifice in the nozzle member is associated with a single ink ejection chamber and heating element formed on the substrate. The nozzle member is adhesively sealed with respect to the ink reservoir body by forming an ink seal circumscribing the substrate, between the back surface of the nozzle member and the headland area of the print cartridge. This method and design for a print cartridge headland for providing a seal directly between a nozzle member and an ink reservoir body has many advantages. One advantage is that the design reduces dimple in the nozzle member and the attendant nozzle trajectory errors. The above advantages provide reduced yield losses, and thus lower manufacturing costs, when manufacturing print cartridges.