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Thermoplastic polymer film sealing of nozzles on fluid ejection devices and method

A thermoplastic polymer and fluid jetting technology, applied in printing and other directions, can solve problems such as changing ink formulations

Inactive Publication Date: 2006-09-20
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, to meet the shipping, handling and storage needs of a particular fluid ejection cartridge, implementers typically struggle here: whether to choose a capping device (for better ink retention), PSA tape (for better sealability), or to change the ink formula

Method used

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  • Thermoplastic polymer film sealing of nozzles on fluid ejection devices and method
  • Thermoplastic polymer film sealing of nozzles on fluid ejection devices and method
  • Thermoplastic polymer film sealing of nozzles on fluid ejection devices and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0059] Tape 3: To prepare a thermoplastic film tape, a 38 μm thick ethylene vinyl acetate (EVA) thermoplastic polymer adhesive was extrusion cast on a 14.2 μm thick PET base film. EVA copolymer is E.I.DuPont de Nemours & Co. commercially available commodity ELVAX  3190. The tape surface was heated to about 120°C and bonded to the nozzle layer of the fluid ejection cartridge at a pressure of 45 psi.

Embodiment 4

[0061] Tape 4: A tape of thermoplastic film was prepared in the same manner as Tape 3, except that the thermoplastic binder was an ethylene-vinyl acetate-methacrylic acid terpolymer, which is commercially available from E.I. DuPont de Nemours & Co. as ELVAX  4260. The tape surface was heated to about 120°C and bonded to the nozzle layer of the fluid ejection cartridge at a pressure of 45 psi.

Embodiment 5

[0063] Tape 5: A tape of thermoplastic film was prepared in the same manner as Tape 3, except that the thermoplastic adhesive was ethylene-vinyl acetate copolymer crosslinked with a 10 mrad electron beam dose. The copolymer is commercially available as ELVAX from E.I. DuPont de Nemours & Co.  3170. The tape surface was heated to about 130°C and bonded to the nozzle layer of the fluid ejection cartridge at a pressure of 45 psi.

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Abstract

A fluid ejection cartridge (220) includes an ejector head (222) having at least one nozzle (224) and a fluid reservoir (228) containing an ejectable fluid, fluidically coupled with the at least one nozzle. The fluid ejection cartridge has a tape (200) that includes a thermoplastic polymer (202) film in contact with and releasably bonded with the nozzles.

Description

technical field [0001] The present invention relates generally to methods of sealing nozzles on fluid ejection devices, and more particularly, the present invention relates to thermoplastic polymer film sealing of nozzles on fluid ejection devices. Background technique [0002] For decades, fluid micromanipulation has made rapid progress in many fields, such as electronic printing using inkjet printers. Effective peelable seals of input and output nozzles or channels in these products have long been desired. [0003] A major concern in maintaining the tightness of microfluidic channel seals is the ability to prevent fluid from leaking out of the channel and foreign substances to clog or enter the channel during shipping, handling and storage. Microfluidic channel seals are expected to serve these functions, including preventing evaporation, contamination, and intermixing of fluids between channels. In addition, it is also desirable to minimize the amou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/175
CPCB41J2/17536B41J2/1623B41J2/17513B41J2/17526
Inventor I·法尔S·N·米勒S·H·张
Owner HEWLETT PACKARD DEV CO LP
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