US5619488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording device
Assignee: Fujifilm Business Innovation Corp
•
Filing: 1995-02-10
•
Granted: 1997-04-08
•
Expires: 2015-02-10
Abstract
Abstract An information recording device having a light source unit including a plurality of laser light sources which are substantially linearly arrayed and independently driven, a deflecting unit for periodically deflecting a plurality of beams of laser light emitted from the light source unit in a direction crossing that of an array of the beams, and an image forming optical system for focusing the plurality of laser beams from the deflecting unit on a photoreceptor. In the information recording device, optical units for reducing divergence of the laser beams are provided in connection with the laser light sources of the light source unit.
Inventors
- 👤 Takeshi Ota
- 👤 Masao Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:01
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/12; G11B7/135; G11B7/1381; B; B41; B41J; B41J2/00; B41J2/435; B41J2/47; B41J2/471; B41J2/473; G11B7/125; G11B7/127; G11B7/1365; G11B7/1372; G11B7/1376; G11B7/14; H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/1911; H04N1/1912; H01; H01S; H01S5/00; H01S5/40; H01S5/42; H04N1/113; H04N1/1135; H04N1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
An information recording device comprising: light source means including a plurality of laser light sources in a monolithic laser array, which are substantially linearly arrayed and independently driven; deflecting means for periodically deflecting a plurality of beams of laser light emitted from said light source means in a direction crossing that of an array of said beams; an image forming optical system for focusing the plurality of laser beams from said deflecting means onto a photoreceptor; and a lens means comprising a monolithic array of microlenses, each of said microlenses being optically coupled to one of said laser light sources, wherein said lens means defines an apparent light source plane behind a light emitting plane of said light source means, and wherein said image forming optical system projects the image of said apparent light source plane on said photoreceptor.
Claim 2
Dependent Claim
139 words
An information recording device comprising: light source means including a plurality of laser light sources in a monolithic laser array, which are substantially linearly arrayed and independently driven; deflecting means for periodically deflecting a plurality of beams of laser light emitted from said light source means in a direction crossing that of an array of said beams; an image forming optical system for focusing the plurality of laser beams from said deflecting means onto a photoreceptor; and a lens means comprising a monolithic array of microlenses, each of said microlenses being optically coupled to one of said laser light sources, wherein said lens means defines an apparent light source plane behind a light emitting plane of said light source means, and wherein said image forming optical system projects the image of said apparent light source plane on said photoreceptor.
Claim 3
Dependent Claim
169 words
An information recording device comprising: light source means including a plurality of laser light sources comprised of a monolithic laser array, said sources being substantially linearly arrayed and independently driven; deflecting means for periodically deflecting a plurality of beams of laser light emitted from said light source means in a direction crossing that of an array of said beams; an image forming optical system for focusing he plurality of laser beams from said deflecting means onto a photoreceptor, said optical system including a monolithic microlens array; and a plurality of collimator optical systems for arranging the laser beams into substantially parallel beams geometrical-optically collimated, each optically coupled to one of said laser light sources, wherein a principal plane of said collimator optical system and an image formed surface of the photoreceptor are disposed in an optically conjugate relationship with respect to said image forming optical system, and wherein said image forming optical system projects the image of said principal plane as an apparent light source plane on said photoreceptor.
Claim 4
Dependent Claim
169 words
An information recording device comprising: light source means including a plurality of laser light sources comprised of a monolithic laser array, said sources being substantially linearly arrayed and independently driven; deflecting means for periodically deflecting a plurality of beams of laser light emitted from said light source means in a direction crossing that of an array of said beams; an image forming optical system for focusing he plurality of laser beams from said deflecting means onto a photoreceptor, said optical system including a monolithic microlens array; and a plurality of collimator optical systems for arranging the laser beams into substantially parallel beams geometrical-optically collimated, each optically coupled to one of said laser light sources, wherein a principal plane of said collimator optical system and an image formed surface of the photoreceptor are disposed in an optically conjugate relationship with respect to said image forming optical system, and wherein said image forming optical system projects the image of said principal plane as an apparent light source plane on said photoreceptor.
Claim 5
Dependent Claim
43 words
The information recording device according to claim 1, wherein said microlens array includes a cylindrical lens array disposed such that a direction in which said cylindrical lens array exhibits a lens function is substantially coincident with an array direction of said laser array.
Claim 6
Dependent Claim
22 words
The information recording device according to claim 1, wherein said laser array includes a semiconductor laser array formed on a single substrate.
Claim 7
Dependent Claim
27 words
The information recording device according to claim 1, wherein a surface of the photoreceptor is scanned with the plurality of laser beams by an interlaced scanning operation.
References Cited (Backward Citations)
US3980818A
Cited
JPS547328A
Cited
JPS5438130A
Cited
JPS56110960A
Cited
US4425636A
Cited
JPS5915218A
Cited
US4727381A
Cited
JPS61269237A
Cited
JPS61216132A
Cited
JPS62291728A
Cited
US4743091A
Cited
US4974919A
Cited
US4851978A
Cited
US5009472A
Cited
US4969137A
Cited
DE3827761A1
Cited
US5128919A
Cited
US4813762A
Cited
US5005969A
Cited
US5121378A
Cited
JPH0239583A
Cited
US5072437A
Cited
US5105407A
Cited
NL9000135A
Cited
US5084895A
Cited
JPH02239433A
Cited
EP0388760A1
Cited
US5225924A
Cited
US5126995A
Cited
US4935939A
Cited
US4963900A
Cited
US5132959A
Cited
US5172369A
Cited
US5148010A
Cited
US5233583A
Cited
US5168401A
Cited
US5208456A
Cited
US5379266A
Cited
US5185752A
Cited
US5465243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |