Liquid electrophotographic composition

US2016342103A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2016342103-A1
Application numberUS-201415102495-A
CountryUS
Kind codeA1
Filing dateJan 24, 2014
Priority dateJan 24, 2014
Publication dateNov 24, 2016
Grant date

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

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Liquid electrophotographic compositions, methods of manufacturing liquid electrophotographic compositions, methods of printing using liquid electrophotographic compositions and printed articles are disclosed.

First claim

Opening claim text (preview).

1 . A liquid electrophotographic composition, comprising: a carrier liquid; a polymer resin; and an optical brightening agent. 2 . The liquid electrophotographic composition of claim 1 , wherein the liquid electrophotographic composition is a non-pigmented electrophotographic composition. 3 . The liquid electrophotographic composition of claim 1 , wherein the optical brightening agent is a non-pigmented optical brightening agent. 4 . The liquid electrophotographic composition of claim 3 , wherein the optical brightening agent is a fluorophore. 5 . The liquid electrophotographic composition of claim 1 , wherein the optical brightening agent is present in a predetermined amount. 6 . The liquid electrophotographic composition of claim 1 , wherein the optical brightening agent is present in an amount of less than 5.0 wt % based on the total solids content of the composition. 7 . The liquid electrophotographic composition of claim 6 , wherein the optical brightening agent is present in an amount of less than 2.0 wt % based on the total solids content of the composition. 8 . The liquid electrophotographic composition of claim 1 , wherein the optical brightening agent comprises one or more of a triazine stilbene and derivatives thereof, a biphenyl stilbene and derivatives thereof, a coumarin and derivatives thereof, a benzoxazoline and derivatives thereof, a diazolole and derivatives thereof, an imidazoline and derivatives thereof, or mixtures thereof. 9 . The liquid electrophotographic composition of claim 1 , wherein the composition further comprises a fluorescence adjuvant. 10 . The liquid electrophotographic composition of claim 1 , wherein the composition further comprises a charge director. 11 . The liquid electrophotographic composition of claim 1 , wherein the optical brightening agent is insoluble in the carrier liquid. 12 . A method of manufacturing the liquid electrophotographic composition of claim 1 , comprising grinding a carrier liquid, a polymer resin and an optical brightening agent to form the liquid electrophotographic composition. 13 . The method of claim 12 , wherein the carrier liquid and polymer resin are combined to form an electrophotographic paste prior to grinding with the optical brightening agent. 14 . A method of electrophotographic printing, comprising printing the liquid electrophotographic composition of claim 1 onto a substrate using a liquid electrophotographic printer. 15 . A printed article, printed by the method of claim 14 .

Assignees

Inventors

Classifications

  • G03G9/125Primary

    characterised by the liquid · CPC title

  • using a liquid developer · CPC title

  • characterised by the colouring agents · CPC title

  • characterised by polymer components · CPC title

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Frequently asked questions

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What does patent US2016342103A1 cover?
Liquid electrophotographic compositions, methods of manufacturing liquid electrophotographic compositions, methods of printing using liquid electrophotographic compositions and printed articles are disclosed.
Who is the assignee on this patent?
Hewlett Packard Indigo Bv
What technology area does this patent fall under?
Primary CPC classification G03G9/125. Mapped technology areas include Physics.
When was this patent published?
Publication date Thu Nov 24 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).