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Method of estimating an amount of available ink contained in an ink reservoir

A technology of ink volume and ink, which is applied in printing and other directions, and can solve problems such as ink volume loss

Inactive Publication Date: 2006-06-21
LEXMARK INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, it has been recognized that significant loss of ink volume may occur in the printhead process cartridge through evaporation

Method used

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  • Method of estimating an amount of available ink contained in an ink reservoir
  • Method of estimating an amount of available ink contained in an ink reservoir
  • Method of estimating an amount of available ink contained in an ink reservoir

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Embodiment Construction

[0016] Referring now to the attached drawings in particular figure 1 , figure 1 An imaging system 6 embodying the invention is shown. Imaging system 6 includes a host computer 8 and an imaging device 10, the latter in the form of an inkjet printer 10 as shown. The host computer 8 is communicatively coupled to the imaging device 10 via a communication link 11 . Communication link 11 may be, for example, a direct electrical or optical connection, or a network connection.

[0017] Imaging device 10 includes printhead carriage system 12 , feed roller unit 14 , media sheet pickup unit 16 , controller 18 , midframe 20 , and media source 21 .

[0018] The host computer 8 may be, for example, a computer comprising display means, input means (e.g. a keyboard), a processor, input / output (I / O) interfaces, memory such as RAM, ROM, NVRAM, such as a hard disk, CD-ROM and / or DVD unit. Personal computer with mass data storage components. During operation, host computer 8 contains in its ...

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PUM

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Abstract

The present invention relates to a method of estimating the amount of ink contained in an ink tank, the method comprising the steps of: determining the actual cumulative drop count (S102) of ink drops ejected from the ink tank; and determining the evaporation associated with the ink tank Amount, wherein the evaporation amount is ignored before a time threshold, and once the time threshold is reached, the evaporation compensation drop count is formed by adjusting the actual cumulative ink drop count, and the evaporation loss is compensated for the ink tank by the evaporation amount.

Description

technical field [0001] The present invention relates to imaging devices, and more particularly, to a method of estimating the amount of usable ink contained in an ink tank. Background technique [0002] Inkjet disposable printhead cartridges include ink tanks containing ink for printing on print media such as paper. Typically, ink level indicators on Windows-powered printers track ink levels based on counts of ink drops that are ejected onto the print media. In addition, ink drops ejected during printhead maintenance operations can be tracked. However, ink volume loss may occur in a manner that cannot be tracked by counting ejected ink dots alone. As used herein, the terms "ink dot" and "ink drop" are synonymous. [0003] For example, it has been recognized that significant ink volume loss may occur in the printhead process cartridge through evaporation. Evaporation occurs through the holes in the process cartridge cover, through the nozzle openings on the printhead nozz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/195B41J2/175
CPCB41J2/17566B41J2002/17569B41J2002/17589
Inventor 克里斯托弗·艾德金斯迈克尔·C.·坎贝尔唐纳德·F.·克罗利马克·W.·法甘布赖恩·T.·琼斯蒂莫西·L.·斯创克戴维·E.·格瑞尔
Owner LEXMARK INT INC
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