Modular printhead assembly incorporating ink storage distribution assemblies
View Patent ↗A printhead assembly includes an elongate chassis. An elongate ink storage assembly is mounted on the chassis. Printhead modules are mounted along the ink storage assembly. Each printhead module includes an ink distribution assembly in fluid communication with the ink storage assembly. A printhead chip is mounted on each ink distribution assembly to receive ink from the assembly. An electrical signal connector is fast with the printhead chip to provide the printhead chip with data and power.
1. A printhead assembly which comprises
an elongate chassis;
an elongate ink storage assembly mounted on the chassis; and
printhead modules mounted along the ink storage assembly, each printhead module comprising
an ink distribution assembly in fluid communication with the ink storage assembly;
a printhead integrated circuit mounted on the ink distribution assembly to receive ink from the assembly; and
an electrical signal connector fast with the printhead integrated circuit to provide the printhead integrated circuit with data and power.
2. A printhead assembly as claimed in claim 1 , in which the ink storage assembly comprises a reservoir that defines channels connectable to respective ink supplies, the reservoir having ink connectors in fluid communication with each channel, each ink distribution assembly having corresponding connectors that are engageable with the ink connectors to receive ink from each channel.
3. A printhead assembly as claimed in claim 2 , in which the reservoir comprises a reservoir molding having the ink connectors and a lid.
4. A printhead assembly as claimed in claim 3 , in which each ink distribution assembly and the reservoir molding define complementary mounting formations configured to permit the ink distribution assemblies to be detachably mounted on the reservoir molding.
5. A printhead assembly as claimed in claim 2 , in which each distribution assembly includes a micromolding that defines a support for the associated printhead integrated circuit and a cover molding, the micromolding being mounted in the cover molding to define ink chambers for retaining respective inks.
6. A printhead assembly as claimed in claim 5 , in which each electrical signal connector is a tape automated bonding (TAB) film.
7. A printhead assembly as claimed in claim 6 , in which each micromolding is configured to mate with the TAB film to define a floor of each ink chamber.