US5491384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light source for a contact image sensor
Assignee: Dyna Image Corp
•
Filing: 1994-08-30
•
Granted: 1996-02-13
•
Expires: 2014-08-30
Abstract
Abstract A light source for a contact image sensor, including an electroluminescent screen fastened to the scanning face glass of a contact image sensor at the back either by bonding or printing and having a narrow gap through which reflected light from document passes to the lens of the contact image sensor.
Inventors
- 👤 Cheden Cheng
- 👤 Shih S. Huang
- 👤 Tsung M. Ko
- 👤 Hsin C. Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/02845; H04N1/03; H04N1/031; H04N1/0311; H04N1/0312; H04N1/0315; H04N1/0317; H04N1/0318; H04N2201/00; H04N2201/024; H04N2201/028; H04N2201/03; H04N2201/031; H04N2201/03104; H04N2201/03108; H04N2201/03112; H04N2201/03129; H04N2201/03141; H04N2201/03145; H04N2201/0315; H04N2201/03175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A contact image sensor, comprising an electroluminescent screen fastened to a back side of a scanning face glass of the contact image sensor and spaced apart from a lens of said contact image sensor, said electroluminescent screen acted upon by electric power to emit light onto a document to be scanned, said electroluminescent screen having a narrow slot through which reflected light from said document passes to said lens.
Claim 2
Dependent Claim
69 words
A contact image sensor, comprising an electroluminescent screen fastened to a back side of a scanning face glass of the contact image sensor and spaced apart from a lens of said contact image sensor, said electroluminescent screen acted upon by electric power to emit light onto a document to be scanned, said electroluminescent screen having a narrow slot through which reflected light from said document passes to said lens.
References Cited (Backward Citations)
US5283501A
Cited
US5294870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-12 | 1999-08-14 | 2000-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-12 | 2003-08-14 | 2004-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-12 | 2007-08-14 | 2008-02-13 | $7700.00 | Window Closed / Lapsed |