Patent US5475212A successfully refreshed from Google Patents.
US5475212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for imaging multiple radiation beams
Assignee: Xerox Corp
•
Filing: 1995-05-16
•
Granted: 1995-12-12
•
Expires: 2015-05-16
Abstract
Abstract A radiation imaging method and system for use in various imaging techniques includes a source of radiation at first and second wavelengths. A first radiation target array receives the radiation from the first wavelength at first spacial locations to produce an array of output signals at locations within the first radiation target array related to the magnitude of the radiation at each of the first spacial locations. A second radiation target array receives the radiation at the second wavelength at second spacial locations to produce an array of output signals at locations within the second radiation target array related to the magnitude of the radiation at each of the second spacial locations. The first and second outputs are combined to produce combined image signals that has increased contrast from that which would be produced by either the first or the second output alone. In a preferred embodiment, the first and second radiation target arrays comprise amorphous silicon arrays in which sensor data from the first and second radiation targets is synchronously clocked from the array.
Inventors
- 👤 Steven E. Nelson
- 👤 Robert A. Street
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; G; G01; G01T; G01T1/00; G01T1/29; G01T1/2914; G01T1/2921; G01T1/2928; H04N1/02845; H04N1/0287; H04N1/40; H04N5/00; H04N5/30; H04N5/32; H04N5/3205
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
133 words
A scanner for scanning an object to produce an image of the object, the scanner comprising: a first plurality of light sources, wherein each of the light sources emits an electromagnetic radiation beam at a respective wavelength, the first plurality of light sources moving relative to a side of the object; a plurality of sensors of a single addressable sensor array, the plurality of sensors forming a plurality of addressable lines, wherein each one of the plurality of emitted electromagnetic radiation beams separately scans across a different one of the plurality of addressable lines during a scanning interval; and readout means for reading each scanned addressable line after each scanning interval and for determining a magnitude of an output of each addressable line for each one of the plurality of electromagnetic radiation beams.
Claim 2
Dependent Claim
133 words
A scanner for scanning an object to produce an image of the object, the scanner comprising: a first plurality of light sources, wherein each of the light sources emits an electromagnetic radiation beam at a respective wavelength, the first plurality of light sources moving relative to a side of the object; a plurality of sensors of a single addressable sensor array, the plurality of sensors forming a plurality of addressable lines, wherein each one of the plurality of emitted electromagnetic radiation beams separately scans across a different one of the plurality of addressable lines during a scanning interval; and readout means for reading each scanned addressable line after each scanning interval and for determining a magnitude of an output of each addressable line for each one of the plurality of electromagnetic radiation beams.
Claim 3
Dependent Claim
12 words
The scanner of claim 1, wherein the object is a two-dimensional object.
Claim 4
Dependent Claim
34 words
The scanner of claim 1, wherein the first plurality of light sources move along a first side of the object and the addressable sensor array is positioned on a second side of the object.
Claim 5
Dependent Claim
15 words
The scanner of claim 1, wherein the addressable sensor array comprises an amorphous silicon array.
Claim 6
Dependent Claim
19 words
The scanner of claim 4, wherein the addressable sensor array comprises a rectangular array of the plurality of sensors.
Claim 7
Dependent Claim
62 words
The scanner of claim 1, wherein the readout means further comprises output means for producing an output signal for each scanned addressable line, and wherein the scanner further comprises comparing means for comparing a plurality of the output signals, each one of the plurality of compared output signals corresponding to one of the electromagnetic radiation beams received by the respective addressable line.
Claim 8
Dependent Claim
41 words
The scanner of claim 6, wherein the comparing means subtracts, for each addressable line, the magnitude of a first electromagnetic radiation beam received by the addressable line from the magnitude of a second electromagnetic radiation beam received by the addressable line.
Claim 9
Dependent Claim
73 words
The scanner of claim 1, wherein the first plurality of light sources are located on a first side of the object, a first one of the first plurality of light sources emitting an electromagnetic radiation beam having a first wavelength towards the first side of the object, a second one of the first plurality of light sources emitting an electromagnetic radiation beam having a second wavelength towards the first side of the object.
Claim 10
Dependent Claim
48 words
The scanner of claim 8, wherein the single addressable sensor array is a one-piece detector positioned on the first side of the object, the one-piece detector having a transparent substrate and a sensor array positioned on the side of the substrate facing the first side of the object.
Claim 11
Dependent Claim
73 words
The scanner of claim 8, further comprising a second plurality of light sources located on a second side of the object, a first one of the second plurality of light sources emitting an electromagnetic radiation beam having a third wavelength towards the second side of the object, a second one of the second plurality of light sources emitting an electromagnetic radiation beam having a fourth wavelength towards the second side of the object.
Claim 12
Dependent Claim
43 words
The scanner of claim 10, further comprising a one-piece detector positioned on the second side of the object, the one-piece detector having a transparent substrate and a sensor array positioned on a side of the substrate facing the second side of the object.
Claim 13
Dependent Claim
231 words
The scanner of claim 1, wherein the first plurality of light sources are located on a first side of the object, a first one of the first plurality of light sources emitting an electromagnetic radiation beam having a first wavelength towards the first side of the object, a second one of the first plurality of light sources emitting an electromagnetic radiation beam having a second wavelength towards the first side of the object, wherein the single addressable sensor array is a first one-piece detector positioned on the first side of the object, the first detector having a transparent first substrate and a first sensor array positioned on the side of the first substrate facing the first side of the object; the scanner further comprising a second plurality of light sources located on a second side of the object, a first one of the second plurality of light sources emitting an electromagnetic radiation beam having a third wavelength towards the second side of the object, a second one of the second plurality of light sources emitting an electromagnetic radiation beam having a fourth wavelength towards the second side of the object; and a second one-piece detector positioned on the second side of the object, the second detector having a transparent second substrate and a second sensor array positioned on the side of the second substrate facing the second side of the object.
Claim 14
Dependent Claim
27 words
The scanner of claim 12, wherein said first sensor array comprises a first amorphous silicon array and said second sensor array comprises a second amorphous silicon array.
Claim 15
Dependent Claim
37 words
The scanner of claim 13, wherein the first amorphous silicon array comprises a rectangular array of a first plurality of sensors and said second amorphous silicon array comprises a rectangular array of a second plurality of sensors.
Claim 16
Dependent Claim
11 words
The scanner of claim 12, wherein the object is a document.
Claim 17
Dependent Claim
95 words
The scanner of claim 12, wherein the first sensor array comprises a first plurality of addressable lines, wherein during a scanning interval, at least one addressable line separately receives a corresponding one of the first plurality of electromagnetic radiation beams after the corresponding radiation beam is modulated by the object; and the second detector further comprising a second plurality of addressable lines, wherein during the scanning interval, at least one addressable line separately receives a corresponding one of the second plurality of electromagnetic radiation beams after the corresponding radiation beam is modulated by the object.
Claim 18
Dependent Claim
55 words
The scanner of claim 16, wherein the first detector further comprises first comparing means for comparing, for each addressable line, a magnitude of each radiation beam striking the addressable line; and the second detector further comprising second comparing means for comparing, for each addressable line, a magnitude of each radiation beam striking the addressable line.
References Cited (Backward Citations)
US4330209A
Cited
US4345158A
Cited
US4517733A
Cited
US4511799A
Cited
EP0272870A2
Cited
EP0303940A1
Cited
US4820048A
Cited
JPH01196550A
Cited
EP0333533A1
Cited
US4945242A
Cited
EP0384708A2
Cited
US5037201A
Cited
US5144374A
Cited
US5303027A
Cited
US5432334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-11 | 1999-06-12 | 1999-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-11 | 2003-06-12 | 2003-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-11 | 2007-06-12 | 2007-12-12 | $7700.00 | Window Closed / Lapsed |