Erasure fluid
AssigneeHewlett-Packard Development Company, L.P.
InventorRaymond Adamic
Life of this patent
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Abstract
An erasure fluid includes a vehicle, an erasure component incorporated into the vehicle, and a polymer. The erasure component interacts with a selected colorant of an erasable inkjet ink printed on a medium to erase the inkjet ink from the medium, and is chosen from persulfate ions, peroxymonosulfate ions, hydrogen peroxide, chlorate ions, hypochlorite ions, ascorbic acid, and a chelating agent. Further, the polymer is chosen from carboxymethylcelluloses, methyl celluloses, polyethylene glycols, guar gum, starches, and combinations thereof.
Claims15
An erasure fluid, comprising:
- a vehicle;
- an erasure component incorporated into the vehicle, the erasure component being chosen to interact with a selected colorant of an erasable inkjet ink printed on a medium to erase the inkjet ink from the medium, the erasure component being chosen from persulfate ions, peroxymonosulfate ions, hydrogen peroxide, chlorate ions, hypochlorite ions, ascorbic acid, and a chelating agent;
- and
- a polymer chosen from carboxymethylcelluloses, methyl celluloses, polyethylene glycols, guar gum, starches, and combinations thereof.
An erasure fluid, comprising:
- a vehicle, including:
- 1,2-propanediol present in an amount ranging from about 5 wt % to about 15 wt %;
- and
- glycerol present in an amount ranging from about 5 wt % to about 15 wt %;
- and
- an erasure component incorporated into the vehicle, the erasure component being chosen from one of i) sodium persulfate present in an amount ranging from about 1 wt % to about 3 wt % of the erasure fluid, ii) hydrogen peroxide present in an amount ranging from about 2 wt % to about 4 wt % of the erasure fluid, and iii) citric acid present in an amount ranging from about 2 wt % to about 5 wt % of the erasure fluid.
A method of making an erasure fluid, comprising:
- forming a vehicle including a solvent;
- and
- adding an erasure component to the vehicle, the erasure component being chosen from persulfate ions, peroxymonosulfate ions, hydrogen peroxide, chlorate ions, hypochlorite ions, ascorbic acid, and a chelating agent;
- wherein the erasure component is chosen to interact with a selected colorant of an erasable inkjet ink printed on a medium to erase the inkjet ink from the medium.
Dependencies are inferred from the claim text.