US5151714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color image recording apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1990-05-29
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Granted: 1992-09-29
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Expires: 2010-05-29
Abstract
Abstract The essential feature of the color image recording apparatus of the present invention is that it uses a laser light source capable of simultaneous emission of laser beams associated with exposure to R, G and B light. The apparatus also uses a light deflector and a device for selectively reflecting or transmitting said laser beams, for example, a rotating polygonal mirror in which at least one of the reflecting faces has a different spectral characteristic of reflection than other faces or a light deflector and at least one color filter that operates in synchronism with the light deflector. In the present invention, a laser beam having a wavelength associated with exposure to light either one or R, G and B colors is separated from the light beams emitted from the laser light source, and the recording material is exposed to successive beams of different colors, one for each scanning line, to insure exposure for a full-color image by three scanning lines. Since this obviates the need for providing the reflecting mirror and the dichroic mirrors that have been necessary to align the optical axes of R, G and B laser beams in the prior art color image recording apparatuses, it becomes possible to construct a compact and inexpensive color image recording apparatus.
Inventors
- 👤 Yoshiharu Okino
- 👤 Yoji Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:48
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/50; H04N1/504
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
A color image recording apparatus for recording a full color image by sequentially defining different scanning lines respectively corresponding to three primary colors on a material to be recorded by means of a laser beam deflected in a scanning direction, wherein the apparatus includes: a laser light source capable of simultaneous emission of laser beams associated with exposure to red, green and blue light, a light deflector for said laser beams having at least one reflecting face, and means for selectively reflecting said laser beams, which changes the spectral characteristics of reflection of said laser beams in a sequential cycle defining scanning lines corresponding to the three primary colors, in order to choose the color to be recorded on the material.
Claim 2
Dependent Claim
121 words
A color image recording apparatus for recording a full color image by sequentially defining different scanning lines respectively corresponding to three primary colors on a material to be recorded by means of a laser beam deflected in a scanning direction, wherein the apparatus includes: a laser light source capable of simultaneous emission of laser beams associated with exposure to red, green and blue light, a light deflector for said laser beams having at least one reflecting face, and means for selectively reflecting said laser beams, which changes the spectral characteristics of reflection of said laser beams in a sequential cycle defining scanning lines corresponding to the three primary colors, in order to choose the color to be recorded on the material.
Claim 3
Dependent Claim
61 words
The color image recording apparatus according to claim 1, wherein said light deflector is a rotating polygonal mirror having a plurality of reflecting faces wherein said at least one reflecting face has spectral characteristics different from other said reflecting faces, and said means for selectively reflecting the laser beam is said at least one reflecting face of said rotating polygonal mirror.
Claim 4
Dependent Claim
30 words
The color image recording apparatus according to claim 1, or 2, wherein said at least one reflecting face has a different spectral reflectance for one of said three primary colors.
Claim 5
Dependent Claim
30 words
The color image recording apparatus according to claim 1 or 2 wherein said laser light source is an RGB laser which emits three primary color laser beams by wavelength conversion.
Claim 6
Dependent Claim
56 words
The color image recording apparatus according to claim 1, wherein said means for selectively transmitting the laser beam is a color filter assembly which moves synchronically with said light deflector, said color filter assembly having a plurality of transmitting faces wherein at least one of the transmitting faces has transmitting characteristics different from other transmitting faces.
Claim 7
Dependent Claim
41 words
The color image recording apparatus according to claim 5 wherein said transmitting face having transmitting characteristics different from other transmitting faces has a different transmittance for one of said three primary colors from the other two of said three primary colors.
Claim 8
Dependent Claim
28 words
The color image recording apparatus according to claim 5 wherein said laser light source is an RGB laser which emits three primary color laser beams by wavelength conversion.
Claim 9
Dependent Claim
28 words
The color image recording apparatus according to claim 5 wherein said light deflector is a rotating polygonal mirror and said color filter assembly is a color filter ring.
Claim 10
Dependent Claim
19 words
The color image recording apparatus according to claim 5 wherein said color filter assembly is a color filter disk.
Claim 11
Dependent Claim
121 words
A color image recording apparatus for recording a full color image by sequentially defining different scanning lines respectively corresponding to three primary colors on a material to be recorded by means of a laser beam deflected in a scanning direction, wherein the apparatus comprises: a laser light source capable of simultaneous emission of laser beams associated with exposure to red, green and blue light; a light deflector for said laser beams having at least one reflecting face; and means for selectively transmitting said laser beams, which changes the spectral characteristics of transmission of said laser beams in a sequential cycle defining scanning lines corresponding to the three primary colors, in order to choose the color to be recorded on the material.
Claim 12
Dependent Claim
121 words
A color image recording apparatus for recording a full color image by sequentially defining different scanning lines respectively corresponding to three primary colors on a material to be recorded by means of a laser beam deflected in a scanning direction, wherein the apparatus comprises: a laser light source capable of simultaneous emission of laser beams associated with exposure to red, green and blue light; a light deflector for said laser beams having at least one reflecting face; and means for selectively transmitting said laser beams, which changes the spectral characteristics of transmission of said laser beams in a sequential cycle defining scanning lines corresponding to the three primary colors, in order to choose the color to be recorded on the material.
References Cited (Backward Citations)
US3610818A
Cited
US4848863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |