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

A method of affixing a nozzle member to an inkjet print cartridge body comprising the steps of:

• affixing a substrate containing a plurality of heating elements and associated ink ejection chambers to a back surface of a nozzle member containing a plurality of orifices, the back surface of the nozzle member extending over two or more outer edges of the substrate;
• providing a headland portion including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, the wall openings having a support surface;
• dispensing an adhesive on the adhesive support surface and across the support surface of the wall openings to circumscribe the inlet slot;
• and
• positioning the back surface of the nozzle member with respect to the headland such that the adhesive circumscribes the substrate and affixes the back surface of the nozzle member to the headland.

An inkjet printing system comprising:

• a printer frame;
• a carriage mounted on said printer frame for traversing across a print zone;
• a print cartridge removably mounted in said carriage;
• and including
• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot in fluidic communication with an ink reservoir, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface, the adhesive support surface being approximately 0.15 to 0.20 mm. in width;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland, the adhesive layer being approximately 0.025 to 0.17 mm. in thickness between the top of the adhesive dam and the bottom of the nozzle plate.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface, the top of the adhesive dam being approximately 0.10 to 0.15 mm. above the adhesive support surface;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface, the adhesive dam being approximately 0.10 to 0.15 mm. in width;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface, said headland portion including adhesive ridges formed in an outer wall opposite the inner wall openings;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.

An print cartridge for an inkjet printer comprising:

• a nozzle member having a plurality of ink orifices formed therein;
• a substrate containing a plurality of heating elements and associated ink ejection chambers, said substrate mounted on a back surface of said nozzle member, each heating element being located proximate to an associated ink orifice, said back surface of said nozzle member extending over two or more outer edges of said substrate;
• a headland portion located proximate to the back surface of said nozzle member and including an inner raised wall circumscribing an inlet slot, the inner raised wall having an adhesive support surface and an adhesive dam formed thereon and having wall openings therein, said wall openings having a support surface, said headland portion including downwardly sloping troughs adjacent the support surface;
• and
• an adhesive layer located between the back surface of said nozzle member and the inner raised wall to affix said nozzle member to said headland.