Patent US5956070A successfully refreshed from Google Patents.
US5956070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color xerographic printer with multiple linear arrays of surface emitting lasers with dissimilar polarization states and dissimilar wavelengths
Assignee: Xerox Corp
•
Filing: 1995-12-22
•
Granted: 1999-09-21
•
Expires: 2015-12-22
Abstract
Abstract A color printer uses multiple linear arrays of surface emitting lasers of differing wavelengths and polarization states to simultaneously expose widely separated positions on the same or different photoreceptors. Each array is imaged by the same optical system to the photoreceptor. The multiple linear arrays can be closely spaced in a monolithic structure.
Inventors
- 👤 Thomas L. Paoli
- 👤 Tibor Fisli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:17
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/435; B41J2/447; B41J2/45
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
119 words
A highlight color xerographic line printer comprising a first and second photoreceptor, a first linear laser array for emitting first modulated light beams of a certain wavelength and polarization state and a second linear laser array for emitting second modulated light beams of the same wavelength as the first modulated beams but with the orthogonal polarization state, imaging lens means for imaging said first modulated light beams and said second modulated light beams onto said first and second photoreceptor, and polarization beam separating means for separating said first modulated light beams onto said first photoreceptor to simultaneously expose a full scan line and said second modulated light beams onto said second photoreceptor to simultaneously expose a full scan line.
Claim 2
Dependent Claim
119 words
A highlight color xerographic line printer comprising a first and second photoreceptor, a first linear laser array for emitting first modulated light beams of a certain wavelength and polarization state and a second linear laser array for emitting second modulated light beams of the same wavelength as the first modulated beams but with the orthogonal polarization state, imaging lens means for imaging said first modulated light beams and said second modulated light beams onto said first and second photoreceptor, and polarization beam separating means for separating said first modulated light beams onto said first photoreceptor to simultaneously expose a full scan line and said second modulated light beams onto said second photoreceptor to simultaneously expose a full scan line.
Claim 3
Dependent Claim
24 words
The highlight color xerographic line printer according to claim 1 wherein said polarization beam separating means is a multiple layer film polarized beam separator.
Claim 4
Dependent Claim
22 words
The highlight color xerographic line printer according to claim 1 wherein said polarization beam separating means is a prism polarized beam separator.
Claim 5
Dependent Claim
24 words
The highlight color xerographic line printer according to claim 1 wherein said polarization beam separating means is a beam splitter and two absorptive polarizers.
Claim 6
Dependent Claim
120 words
A highlight color xerographic line printer comprising a photoreceptor, a first linear laser array for emitting first modulated light beams of a certain wavelength and polarization state and a second linear laser array for emitting second modulated light beams of the same wavelength as the first modulated beams but with the orthogonal polarization state, imaging lens means for imaging said first modulated light beams and said second modulated light beams onto said first photoreceptor, and polarization beam separating means for separating said first modulated light beams onto a first region of said photoreceptor to simultaneously expose a full scan line and said second modulated light beams onto a second region of said photoreceptor to simultaneously expose a full scan line.
Claim 7
Dependent Claim
120 words
A highlight color xerographic line printer comprising a photoreceptor, a first linear laser array for emitting first modulated light beams of a certain wavelength and polarization state and a second linear laser array for emitting second modulated light beams of the same wavelength as the first modulated beams but with the orthogonal polarization state, imaging lens means for imaging said first modulated light beams and said second modulated light beams onto said first photoreceptor, and polarization beam separating means for separating said first modulated light beams onto a first region of said photoreceptor to simultaneously expose a full scan line and said second modulated light beams onto a second region of said photoreceptor to simultaneously expose a full scan line.
Claim 8
Dependent Claim
24 words
The highlight color xerographic line printer according to claim 5 wherein said polarization beam separating means is a multiple layer film polarized beam separator.
Claim 9
Dependent Claim
22 words
The highlight color xerographic line printer according to claim 6 wherein said polarization beam separating means is a prism polarized beam separator.
Claim 10
Dependent Claim
24 words
The highlight color xerographic line printer according to claim 6 wherein said polarization beam separating means is a beam splitter and two absorptive polarizers.
Claim 11
Dependent Claim
205 words
A full color xerographic line printer comprising a first, second, third and fourth photoreceptor, a first linear laser array for emitting first modulated light beams of a first wavelength and a first polarization state, a second linear laser array for emitting second modulated light beams of the first wavelength and a second polarization state orthogonal to the said first polarization state, a third linear laser array for emitting third modulated light beams of a second wavelength, different from said first wavelength, and said first polarization state, and a fourth linear laser array for emitting fourth modulated light beams of the second wavelength and said second polarization state, imaging lens means for imaging said first, second, third and fourth modulated light beams onto said first, second, third and fourth photoreceptor, and polarization beam separating means and wavelength separation means for separating said first modulated light beams onto said first photoreceptor to simultaneously expose a full scan line, said second modulated light beams onto said second photoreceptor to simultaneously expose a full scan line, said third modulated light beams onto said third photoreceptor to simultaneously expose a full scan line, and said fourth modulated light beams onto said fourth photoreceptor to simultaneously expose a full scan line.
Claim 12
Dependent Claim
205 words
A full color xerographic line printer comprising a first, second, third and fourth photoreceptor, a first linear laser array for emitting first modulated light beams of a first wavelength and a first polarization state, a second linear laser array for emitting second modulated light beams of the first wavelength and a second polarization state orthogonal to the said first polarization state, a third linear laser array for emitting third modulated light beams of a second wavelength, different from said first wavelength, and said first polarization state, and a fourth linear laser array for emitting fourth modulated light beams of the second wavelength and said second polarization state, imaging lens means for imaging said first, second, third and fourth modulated light beams onto said first, second, third and fourth photoreceptor, and polarization beam separating means and wavelength separation means for separating said first modulated light beams onto said first photoreceptor to simultaneously expose a full scan line, said second modulated light beams onto said second photoreceptor to simultaneously expose a full scan line, said third modulated light beams onto said third photoreceptor to simultaneously expose a full scan line, and said fourth modulated light beams onto said fourth photoreceptor to simultaneously expose a full scan line.
Claim 13
Dependent Claim
24 words
The full color xerographic line printer according to claim 9 wherein said polarization beam separating means is a multiple layer film polarized beam separator.
Claim 14
Dependent Claim
22 words
The full color xerographic line printer according to claim 9 wherein said polarization beam separating means is a prism polarized beam separator.
Claim 15
Dependent Claim
24 words
The full color xerographic line printer according to claim 9 wherein said polarization beam separating means is a beam splitter and two absorptive polarizers.
Claim 16
Dependent Claim
20 words
The full color xerographic line printer according to claim 9 wherein said wavelength separation means is a multiple layer film.
Claim 17
Dependent Claim
25 words
The full color xerographic line printer according to claim 9 wherein said wavelength separation means is a beam splitter and two wavelength selective bandpass filters.
Claim 18
Dependent Claim
206 words
A full color xerographic line printer comprising a photoreceptor, a first linear laser array for emitting first modulated light beams of a first wavelength and a first polarization state, a second linear laser array for emitting second modulated light beams of the first wavelength and a second polarization state orthogonal to said first polarization state, a third linear laser array for emitting third modulated light beams of a second wavelength, different from said first wavelength, and said first polarization state, and a fourth linear laser array for emitting fourth modulated light beams of the second wavelength and said second polarization state, imaging lens means for imaging said first, second, third and fourth modulated light beams onto said photoreceptor, and polarization beam separating means and wavelength separation means for separating said first modulated light beams onto a first region of said photoreceptor to simultaneously expose a full scan line, said second modulated light beams onto a second region of said photoreceptor to simultaneously expose a full scan line, said third modulated light beams onto a third region of said photoreceptor to simultaneously expose a full scan line, and said fourth modulated light beams onto a fourth region of said photoreceptor to simultaneously expose a full scan line.
Claim 19
Dependent Claim
206 words
A full color xerographic line printer comprising a photoreceptor, a first linear laser array for emitting first modulated light beams of a first wavelength and a first polarization state, a second linear laser array for emitting second modulated light beams of the first wavelength and a second polarization state orthogonal to said first polarization state, a third linear laser array for emitting third modulated light beams of a second wavelength, different from said first wavelength, and said first polarization state, and a fourth linear laser array for emitting fourth modulated light beams of the second wavelength and said second polarization state, imaging lens means for imaging said first, second, third and fourth modulated light beams onto said photoreceptor, and polarization beam separating means and wavelength separation means for separating said first modulated light beams onto a first region of said photoreceptor to simultaneously expose a full scan line, said second modulated light beams onto a second region of said photoreceptor to simultaneously expose a full scan line, said third modulated light beams onto a third region of said photoreceptor to simultaneously expose a full scan line, and said fourth modulated light beams onto a fourth region of said photoreceptor to simultaneously expose a full scan line.
Claim 20
Dependent Claim
24 words
The full color xerographic line printer according to claim 15 wherein said polarization beam separating means is a multiple layer film polarized beam separator.
Claim 21
Dependent Claim
22 words
The full color xerographic line printer according to claim 15 wherein said polarization beam separating means is a prism polarized beam separator.
Claim 22
Dependent Claim
24 words
The full color xerographic line printer according to claim 15 wherein said polarization beam separating means is a beam splitter and two absorptive polarizers.
Claim 23
Dependent Claim
20 words
The full color xerographic line printer according to claim 15 wherein said wavelength separation means is a multiple layer film.
Claim 24
Dependent Claim
24 words
The full color xerographic line printer according to claim 15 wherein said wavelength separation means is a beam splitter and two wavelength-selective bandpass filters.
Claim 25
Dependent Claim
88 words
A color xerographic line printer comprising at least two photoreceptors, at least two linear laser arrays for emitting at least two modulated light beams of either differing wavelengths or differing polarization states, imaging lens means for imaging said at least two modulated light beams onto said at least two photoreceptors, and polarization beam separating means and wavelength separation means for separating each of said at least two modulated light beams onto only one different photoreceptor to simultaneously expose a full scan line of said at least two photoreceptors.
Claim 26
Dependent Claim
88 words
A color xerographic line printer comprising at least two photoreceptors, at least two linear laser arrays for emitting at least two modulated light beams of either differing wavelengths or differing polarization states, imaging lens means for imaging said at least two modulated light beams onto said at least two photoreceptors, and polarization beam separating means and wavelength separation means for separating each of said at least two modulated light beams onto only one different photoreceptor to simultaneously expose a full scan line of said at least two photoreceptors.
Claim 27
Dependent Claim
79 words
A color xerographic line printer comprising a photoreceptor, at least two linear laser arrays for emitting at least two modulated light beams of either differing wavelengths or differing polarization states, imaging lens means for imaging said at least two modulated light beams onto said photoreceptor, and polarization beam separating means and wavelength separation means for separating each of said at least two modulated light beams onto a different area of said photoreceptor to simultaneously expose a full scan line.
Claim 28
Dependent Claim
79 words
A color xerographic line printer comprising a photoreceptor, at least two linear laser arrays for emitting at least two modulated light beams of either differing wavelengths or differing polarization states, imaging lens means for imaging said at least two modulated light beams onto said photoreceptor, and polarization beam separating means and wavelength separation means for separating each of said at least two modulated light beams onto a different area of said photoreceptor to simultaneously expose a full scan line.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-20 | 2003-03-22 | 2003-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-20 | 2007-03-22 | 2007-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-20 | 2011-03-22 | 2011-09-21 | $7700.00 | Window Closed / Lapsed |