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US 8,506,062 B2Granted
Time limited printing method and device
AssigneeYongyong Xu
InventorYongyong Xu
Life of this patent
Estimating the term…
Abstract
A method of printing a time limited document is disclosed. The method includes the steps of selecting an ink having a fading time, and printing the time limited document using the selected ink. A printer and associated cartridge are also disclosed.
Claims7
A printer for printing a time limited document based on a priority of the document comprising:
- an ink cartridge including a first ink and a decoloring agent, separated from the first ink;
- and
- a controller for controlling the proportion of the first ink and the decoloring agent, the proportion of the first ink and the decoloring agent determining fading time;
- and a means to associate the priority of the printing document to the fading time.
1 more element
An ink cartridge for providing a time limited ink having a fading time comprising:
- a first compartment having a first ink;
- and
- a second compartment having a decoloring agent, a composition of the first ink and the decoloring agent fading within the fading time;
- wherein the proportion of the first ink and the decoloring agent determining the fading time.
1 more element
An ink cartridge of 5, wherein:
- the ink and the decoloring agent are combined into a composition, the composition fading within a defined fading time.
A printer for printing a time limited document based on a priority of the document comprising:
- a plurality of pre-filled ink cartridges, each pre-filled ink cartridge including an ink having a pre-determined fading time;
- and
- a printer driver for selecting one of the plurality of pre-filled ink cartridges based upon the priority of the time limited document,
- and a means to associate the priority of the printing document to the fading time.
1 more element
Dependencies are inferred from the claim text.