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.

Inactive Publication Date: 2002-06-26
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Printheads formed using CMOS technology tend to be more expensive than those made using NMOS technology
The CMOS fabrication process is a more complex fabrication process than the NMOS fabrication process and requires

Method used

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

Examples

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Embodiment Construction

[0023] figure 1 It is a perspective view of an embodiment with the top cover of the inkjet printing system 10 of the present invention opened. Inkjet printing system 10 includes a printer portion 12 having at least one print cartridge 14 and 16 mounted in a scanning carriage 18 . Printer portion 12 includes a media tray 20 for receiving media 22 . Scanning carriage 18 moves print cartridges 14 and 16 through the print medium as print medium 22 is stepped through the print zone. Printer portion 12 selectively activates drop generators in a printhead portion (not shown) associated with print cartridges 14 and 16 to deposit ink onto a print medium, thereby effecting printing.

[0024] An important aspect of the present invention is the method by which printer portion 12 communicates drop generator activation information to print cartridges 14 and 16 . This drop generator activation information is used by the printhead portion to activate the drop generators as the print cartri...

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PUM

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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.

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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Application Information

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IPC IPC(8): B41J2/01B41J2/05B41J2/06
CPCB41J2/04541B41J2/0458B41J2/04543B41J2/04521B41J2/06
Inventor J·M·托尔格尔森B·科格尔D·M·胡尔斯特M·H·麦肯兹
Owner HEWLETT PACKARD DEV CO LP
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