Method and equipment for transmitting information to ink-jet printing head

An inkjet print head and inkjet printing technology, applied in printing and other directions, can solve the problems of increasing the cost of the print head, increasing the cost, and multiple shielding steps.
CN1355101AInactive Publication Date: 2002-06-26HEWLETT PACKARD DEV CO LP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEWLETT PACKARD DEV CO LP
Publication Date
2002-06-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to an inkjet printing system that includes an inkjet printhead having a plurality of electrical contacts. The plurality of electrical contacts include address contacts and enable contacts for enabling drop generators and drive current contacts for providing drive current to enable drop generators for selectively ejecting ink therefrom. The printing system includes a printing device having a plurality of electrical contacts including address contacts, enable contacts and drive current contacts. The plurality of electrical contacts are configured to establish electrical contact with corresponding electrical contacts on the inkjet printhead upon insertion of the inkjet printhead into the printing device. The printing device provides periodic address signals and enable signals to the address and enable contacts one the printhead. In addition, the printing device selectively applies drive current to accomplish forming images on print media.
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Description

technical field

[0001] The present invention relates to inkjet printing apparatus, and more particularly to an inkjet printing apparatus including a printhead portion that receives ink droplet activation signals for selective ejection of ink. Background technique

[0002] Inkjet printing systems frequently employ an inkjet printhead mounted to a carriage that moves back and forth across a print medium, such as paper. As the printhead moves across the print medium, a control unit selectively activates each of a plurality of drop generators in the printhead to launch or deposit ink drops onto the print medium to form images and text characters. Ink that replenishes the plurality of drop generators is provided by an ink supply onboard or remote from the printhead.

[0003] Individual drop generators are selectively actuated by using an actuation signal provided to the printhead by the printing system. In the case of thermal inkjet printing, each drop generator is activated by...

Claims

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