초록 ▼

Multiple links with series resistors are connected to address select transistors and a sense line in a printhead encoding circuit. This arrangement provides an increased number of possible states, thereby increasing the amount of information which can be encoded for such purposes as pen identificati

Multiple links with series resistors are connected to address select transistors and a sense line in a printhead encoding circuit. This arrangement provides an increased number of possible states, thereby increasing the amount of information which can be encoded for such purposes as pen identification.

대표청구항 ▼

[ What is claimed is:] [1.]1. An ink-jet print cartridge, including:a printhead with one or more nozzle arrays fabricated on a printhead substrate with printhead firing resistors;a printhead data encoding circuit, comprising:a sense line:a plurality of addressable circuits connected between the sens

[ What is claimed is:] [1.]1. An ink-jet print cartridge, including:a printhead with one or more nozzle arrays fabricated on a printhead substrate with printhead firing resistors;a printhead data encoding circuit, comprising:a sense line:a plurality of addressable circuits connected between the sense line and a common reference, each circuit comprising a select device, an address line connected to the select device, and a parallel connection of a plurality of link elements and corresponding resistive elements, whereby information is encoded by connecting or not connecting the link elements;interconnect circuitry coupled to the printhead and to the data encoding circuit to provide printhead drive signals and to interrogate the data encoding circuit.