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Small and high performance and density ink jet nozzle

An inkjet print head, print head technology, applied in printing and other directions, can solve problems such as competition, increase in print head size, and increase in printing system cost

Inactive Publication Date: 2002-03-06
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main disadvantage of this approach is that increasing the size of the print head increases the cost of the printing system
This is unacceptable as the price of printing systems is dropping so quickly that printing systems with larger print heads cannot compete in the market due to the increased cost

Method used

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  • Small and high performance and density ink jet nozzle
  • Small and high performance and density ink jet nozzle
  • Small and high performance and density ink jet nozzle

Examples

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Embodiment Construction

[0032] In the following description of the invention, reference is made to the accompanying drawings which form a part hereof, and are illustrated by way of specific examples of possible implementations of the invention. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention.

[0033] The invention is implemented by a compact monochrome printhead having a high density staggered array of drop generators. This arrangement provides high resolution, high speed printing for the present invention. A number of features of the present invention are important to achieve optimal printing system performance.

[0034] One feature of the present invention involves the use of a high resolution printhead with many nozzles operating at high frequency. The resolution of the printhead (as opposed to the printed document) is measured in the number of nozzles per linear inch. The direction of me...

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Abstract

A compact monochrome ink jet printhead having a staggered high-density arrangement of ink drop generators for high-performance printing. The present invention provides a high-performance design that enable high-resolution and high-speed printing while reducing cost due to an efficient use of printhead space. In particular, the compact, high-performance printhead of the present invention includes several thermally-efficient aspects that allow a large number of ink drop generators to be placed on a compact printhead while minimizing problems such as thermal excursions. In a preferred embodiment, the ink drop generator density on the compact printhead exceeds 10 ink drop generators per square millimeter and the compact printhead contains at least 350 nozzles. The ink drop generators are arranged in at least four parallel rows. Each row is staggered (or offset) relative to an adjacent row to provide a greater effective pitch that a non-staggered arrangement.

Description

field of invention [0001] The present invention relates generally to thermal inkjet (TIJ) printheads, and more particularly to systems and methods for high performance printing with a compact monochrome printhead having a staggered array of high density ink drop generator. Background technique [0002] Thermal ink jet (TIJ) printers are very popular and widely used in the computer field. These printers are described by W.J. Lloyd and H.T. Taub in Chapter 13, "Inkjet Devices," of Hardcopy Output Devices (eds. R.C. Durbeck and S. Sherr, San Diego: Academic Press, 1988), and also in U.S. Patents 4,490,728 and 4,313,684. made an introduction. Inkjet printers produce high-quality prints, are compact and portable, and print quickly and quietly because only the ink hits the print medium (such as paper). [0003] Inkjet printers produce printed images by printing a pattern of individual dots (or pixels) at specific locations in an array. The location of these dots, conveniently ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/07B41J2/05B41J2/15
CPCB41J2/15B41J2/14072B41J2/14129B41J2/07
Inventor J·M·托格尔森A·W·巴坎M·H·麦肯兹
Owner HEWLETT PACKARD DEV CO LP
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