Method for calibrating accurate paper steps
US-2015375537-A1 · Dec 31, 2015 · US
Media-tracking system using thermal fluoresence quenching
US8960842B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8960842-B2 |
| Application number | US-201313941733-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 15, 2013 |
| Priority date | Jul 15, 2013 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A system is described for tracking a position of a receiver medium as it travels along a media path. A heat source provides heat to the receiver medium in a localized area sufficient to permanently alter a fluorescent agent in the receiver medium, thereby forming a reference mark characterized by a reduced level of fluorescence. A stimulating light source illuminates the receiver medium at a downstream position along the media path, the stimulating light source having a spectrum adapted to stimulate the fluorescent agent to fluoresce thereby producing emitted light. A sensor is used to sense the emitted light from the receiver medium thereby providing a sensed light level signal. The sensed light level signal is analyzed to determine a position of the receiver medium by detecting the reduced level of fluorescence associated with the reference mark.
First claim
Opening claim text (preview).
The invention claimed is: 1. A system for tracking a position of a receiver medium as it travels along a media path, comprising: a heat source located at a first position along the media path adapted to provide heat to the receiver medium in a localized area, the receiver medium including a fluorescent agent that fluoresces to produce emitted light with an emission spectrum when illuminated by a light source having an appropriate excitation spectrum, wherein the provided heat is s…
Assignees
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Classifications
- B41J11/46Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B41J13/0009Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8960842B2 cover?
- A system is described for tracking a position of a receiver medium as it travels along a media path. A heat source provides heat to the receiver medium in a localized area sufficient to permanently alter a fluorescent agent in the receiver medium, thereby forming a reference mark characterized by a reduced level of fluorescence. A stimulating light source illuminates the receiver medium at a do…
- Who is the assignee on this patent?
- Piatt Michael Joseph, Kauffman Robert Edward, Wolf James Douglas, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B41J11/46. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).