Patent US4053898A successfully refreshed from Google Patents.
US4053898A
Expired / Lapsed
US
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Laser recording process
Assignee: Canon Inc
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Filing: 1975-09-03
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Granted: 1977-10-11
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Expires: 1995-09-03
Abstract
Abstract A laser recording method including: deflecting a plurality of laser beams, respectively and dividing the respective beams into multiple beams which are at substantially regular intervals; linearly arranging respective beams of the multiple beams in a line at substantially regular intervals and in a direction perpendicular to a direction of scanning action of the beams on the recording medium; modulating each beam and focusing the beam on the recording medium; and scanning the recording medium with the divided beams.
Inventors
- 👤 Kazuhiro Hirayama
- 👤 Yasushi Sato
- 👤 Taisuke Tokiwa
- 👤 Kazuo Kawakubo
- 👤 Fujio Iwatate
- 👤 Hisashi Nakatsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:41
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1238; G06K15/1257; G06K15/1271; G06K15/1204; G06K15/1223; G06K15/1228
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
179 words
An optical recording method for recording image information upon a recording medium, comprising the steps of: forming at least two light beams; projecting said light beams along first and second paths, respectively; dividing and simultaneously modulating each of said light beams to form respective first and second groups of modulated beams, wherein the beams of each said group are spaced along respective first and second imaginary straight lines, each of which projects through the beams of its associated group and is disposed substantially perpendicular to the directions of travel of the beams; directing each said group of beams through optical means for disposing such groups in a common array wherein the linearly spaced beams of each group are linearly spaced from the beams of the other group along a third substantially straight line projecting through each of said modulated beams and substantially perpendicular to their directions of travel; and scanning said recording medium with said array of modulated beams to form straight lines of image information on said recording medium in a direction substantially perpendicular to the scanning direction.
Claim 2
Dependent Claim
179 words
An optical recording method for recording image information upon a recording medium, comprising the steps of: forming at least two light beams; projecting said light beams along first and second paths, respectively; dividing and simultaneously modulating each of said light beams to form respective first and second groups of modulated beams, wherein the beams of each said group are spaced along respective first and second imaginary straight lines, each of which projects through the beams of its associated group and is disposed substantially perpendicular to the directions of travel of the beams; directing each said group of beams through optical means for disposing such groups in a common array wherein the linearly spaced beams of each group are linearly spaced from the beams of the other group along a third substantially straight line projecting through each of said modulated beams and substantially perpendicular to their directions of travel; and scanning said recording medium with said array of modulated beams to form straight lines of image information on said recording medium in a direction substantially perpendicular to the scanning direction.
Claim 3
Dependent Claim
46 words
A method according to claim 1, wherein each of said light beams is divided into said respective first and second groups of light beams by an acoustic-optical deflecting element to which acoustic waves having different frequencies are applied in accordance with the number of divided beams.
Claim 4
Dependent Claim
19 words
A method according to claim 2, wherein said acoustic waves are successively applied to said acoustic-optical deflecting elements, respectively.
Claim 5
Dependent Claim
19 words
A method according to claim 2, wherein said acoustic waves are applied simultaneously to said acoustic-optical deflecting elements, respectively.
Claim 6
Dependent Claim
20 words
A method according to claim 1, wherein each of said light beams is divided into a group of nine beams.
Claim 7
Dependent Claim
17 words
A method according to claim 1, wherein said light beams are formed from a common light beam.
Claim 8
Dependent Claim
13 words
A method according to claim 1, wherein said light beams are laser beams.
Claim 9
Dependent Claim
56 words
A method according to claim 1, wherein said dividing and modulating step is performed by providing dividing and modulating means in each said beam path, and wherein said optical means includes prism means positioned along the path of the first group of beams and reflection means positioned along the path of the second group of beams.
Claim 10
Dependent Claim
31 words
A method according to claim 8, wherein, for each additional light beam, said optical means includes prism means and reflection means positioned along the path of its associated group of beams.
Claim 11
Dependent Claim
42 words
A method according to claim 9, wherein said directing step is performed by inclining at least one of said means associated with at least one of said light beams or group of beams with respect to said straight lines of image information.
Claim 12
Dependent Claim
42 words
A method according to claim 8, wherein said directing step is performed by inclining at least one of said means associated with at least one of said light beams or group of beams with respect to said straight lines of image information.
Claim 13
Dependent Claim
183 words
An optical recording method for recording image information upon a recording medium, comprising the steps of: forming at least two light beams; projecting said light beams along first and second paths, respectively; modulating each of said light beams; dividing each of said modulated light beams to form respective first and second groups of modulated beams, wherein the beams of each said group are spaced along respective first and second imaginary straight lines, each of which projects through the beams of its associated group and is disposed substantially perpendicular to the directions of travel of the beams; directing each said group of beams through optical means for disposing such groups in a common array wherein the linearly spaced beams of each group are linearly spaced from the beams of the other group along a third substantially straight line projecting through each of said modulated beams and substantially perpendicular to their directions of travel; and scanning said recording medium with said array of modulated beams to form straight lines of image information on said recording medium in a direction substantially perpendicular to the scanning direction.
Claim 14
Dependent Claim
183 words
An optical recording method for recording image information upon a recording medium, comprising the steps of: forming at least two light beams; projecting said light beams along first and second paths, respectively; modulating each of said light beams; dividing each of said modulated light beams to form respective first and second groups of modulated beams, wherein the beams of each said group are spaced along respective first and second imaginary straight lines, each of which projects through the beams of its associated group and is disposed substantially perpendicular to the directions of travel of the beams; directing each said group of beams through optical means for disposing such groups in a common array wherein the linearly spaced beams of each group are linearly spaced from the beams of the other group along a third substantially straight line projecting through each of said modulated beams and substantially perpendicular to their directions of travel; and scanning said recording medium with said array of modulated beams to form straight lines of image information on said recording medium in a direction substantially perpendicular to the scanning direction.
Claim 15
Dependent Claim
13 words
A method according to claim 12, wherein said light beams are laser beams.
Claim 16
Dependent Claim
56 words
A method according to claim 12, wherein said dividing and modulating step is performed by providing dividing and modulating means in each said beam path and wherein said optical means includes prism means positioned along the path of the first group of beams and reflection means positioned along the path of the second group of beams.
Claim 17
Dependent Claim
33 words
A method according to claim 14, wherein, for each additional light beam, said optical means includes prism means and reflection means at predetermined positions along the path of its associated group of beams.
Claim 18
Dependent Claim
42 words
A method according to claim 15, wherein said directing step is performed by inclining at least one of said means associated with at least one of said light beams or group of beams with respect to said straight lines of image information.
Claim 19
Dependent Claim
42 words
A method according to claim 14, wherein said directing step is performed by inclining at least one of said means associated with at least one of said light beams or group of beams with respect to said straight lines of image information.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |