Patent ID: 6719397
Filing Date: 2004-04-13
Classification: B41J

Abstract:
An inkjet printhead identification circuit, used in a printhead of a cartridge for identifying general information and detecting current status of the cartridge, comprising:a power source, a ground, an output line, a first address line, and a second address line; a first transistor and a first fuse in parallel connection, provided between the ground and the output line, the first transistor having a gate that is electrically connected to the first address line; and a second transistor and a second fuse in parallel connection, provided between the power source and the output line, the second transistor having a gate that is electrically connected to the second address line; wherein, when the first address line turns on the first transistor and the second address line turns off the second transistor, an appropriate voltage applied to the power source burns the second fuse; and when the second address line turns on the second transistor and the first address line turns off the first transistor, an appropriate voltage applied to the power source burns the first fuse.