US3723645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile recording system for recording patterns on both sides of a recording medium
Assignee: Toshiba Corp
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Filing: 1971-03-03
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Granted: 1973-03-27
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Expires: 1991-03-03
Abstract
Abstract A facsimile system wherein two recording means are spaced from each other in the direction of movement of a recording medium, such as a recording paper, and wherein each of the recording means cooperates with one side of the recording medium. The recording means are each respectively supplied with video signals from respective video signal distributors. The spacing of the recording means avoids mutual interference therebetween when they are simultaneously operated to record patterns on both sides of the recording medium at the same time.
Inventors
- 👤 H Takami
- 👤 T Kawashima
- 👤 R Kubota
- 👤 C Sukegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:29
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; H04N1/0283; H04N1/04; H04N1/12; H04N1/1205; H04N1/126; H04N1/127; H04N1/1285; H04N1/203; H04N1/2032; H04N1/2036; H04N1/2038
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
214 words
A facsimile recording system for electrostatically recording patterns on both sides of a recording medium at substantially the same time comprising: a source of first and second video signals representing at least one pattern; first and second video signal distributors respectively receiving said first and second video signals; means for moving said recording medium; first and second electrostatic recording means, each facing one side of said recording medium with a predetermined gap between the recording means and the recording medium, and each respectively connected to receive video signals from said first and second video signal distributors, said first and second recording means being mutually spaced apart a predetermined distance in the direction of movement of said recording medium; a pair of guide rollers disposed between said first and second recording means for feeding said recording medium, each guide roller contacting a respective side of said recording medium, said guide rollers being maintained at predetermined potentials to thereby avoid electrical mutual interference between said first and second recording means through said recording medium when said first and second recording means operate to record patterns represented by the video signals on said recording medium; and first and second adjusting means for adjusting the gaps between said recording medium and said first and second recording means, respectively.
Claim 2
Dependent Claim
214 words
A facsimile recording system for electrostatically recording patterns on both sides of a recording medium at substantially the same time comprising: a source of first and second video signals representing at least one pattern; first and second video signal distributors respectively receiving said first and second video signals; means for moving said recording medium; first and second electrostatic recording means, each facing one side of said recording medium with a predetermined gap between the recording means and the recording medium, and each respectively connected to receive video signals from said first and second video signal distributors, said first and second recording means being mutually spaced apart a predetermined distance in the direction of movement of said recording medium; a pair of guide rollers disposed between said first and second recording means for feeding said recording medium, each guide roller contacting a respective side of said recording medium, said guide rollers being maintained at predetermined potentials to thereby avoid electrical mutual interference between said first and second recording means through said recording medium when said first and second recording means operate to record patterns represented by the video signals on said recording medium; and first and second adjusting means for adjusting the gaps between said recording medium and said first and second recording means, respectively.
Claim 3
Dependent Claim
33 words
A system according to claim 1 wherein said recording system further includes: means to develop said patterns recorded on said recording medium; and means to fix the developed patterns on said recording medium.
Claim 4
Dependent Claim
48 words
A system according to claim 1 wherein one of said first and second video signals is delayed in time with respect to the other, said delay being equal to the time required for said recording medium to move from one of said spaced recording means to the other.
Claim 5
Dependent Claim
22 words
A system according to claim 1 wherein said first and second recording means comprise first and second spaced apart recording heads, respectively.
Claim 6
Dependent Claim
98 words
A system according to claim 4 wherein: each of said first and second video signal distributors comprises a mechanical distributor including a plurality of stylus electrodes, and a sliding brush receiving a video signal cooperating with said stylus electrodes; and each of said first and second recording heads includes a plurality of stylus electrodes each coupled to respective stylus electrodes of the respective distributor; video signals being sequentially distributed to the stylus electrodes of said first and second recording heads to thereby form electrostatic latent images on both sides of said recording medium corresponding to said video signals.
Claim 7
Dependent Claim
60 words
A system according to claim 4 wherein each of said first and second video signal distributors comprises a photoelectric distributor for sequentially distributing light signals corresponding to said video signals among a plurality of photoelectric elements, and each of said first and second recording heads includes a plurality of stylus electrodes each corresponding to respective ones of said photoelectric elements.
Claim 8
Dependent Claim
37 words
A system according to claim 1 wherein said first and second video signal distributors and said first and second recording means are comprised by respective pin electrode printing tubes located on either side of said recording medium.
Claim 9
Dependent Claim
36 words
A system according to claim 1 wherein said first and second video signal distributors and said first and second recording means are comprised of optical fiber printing tubes located on either side of said recording medium.
Claim 10
Dependent Claim
36 words
A system according to claim 1 wherein said first and second video signal distributors and said first and second recording means are comprised of electron beam penetration tubes located on either side of said recording medium.
Claim 11
Dependent Claim
113 words
A system according to claim 1 wherein each of said first and second video signal distributors comprises an electric distributor including a scanning generator, a plurality of gate circuits sequentially enabled by the output of said scanning generator, means coupling said video signals to said gate circuits, and driving means for coupling the outputs from said gate circuits to said recording means, said electric distributors sequentially supplying video signals to said recording means. 11. A system according to claim 1 wherein said recording medium is a five layered recording sheet comprising a substrate layer at its sectional center, and an electroconductive layer and a recording layer on each side of said substrate layer.
Claim 12
Dependent Claim
81 words
A system according to claim 1 wherein said source of first and second video signals comprises: a transmitting device including: first and second video signal generators for generating first and second signals representing at least one pattern; a modulator for modulating at least one of said first and second signals; and means for transmitting the modulated signal; and receiving means for receiving said transmitted signal and generating first and second received signals corresponding to said first and second video signals, respectively.
Claim 13
Dependent Claim
49 words
A system according to claim 12 wherein said transmitting device comprises an amplitude modulator for at least one of said first and second signals, a mixer for mixing the at least one modulated signal and the other signal, and an amplifier for amplifying the output signal from said mixer.
Claim 14
Dependent Claim
60 words
A system according to claim 12 wherein said transmitting device comprises a residual side-band wave modulator for at least one of said first and second signals, respective filters to limit the frequencies of said first and second signals to prescribed bandwidths, a mixer for mixing the outputs from said filters, and an amplifier for amplifying the output from said mixer.
Claim 15
Dependent Claim
76 words
A system according to claim 12 wherein said first and second video signal generators each comprise a rotary cylinder having a helical slit therein and rotated at a predetermined speed, an optical system for focusing an image of a pattern onto said cylinder, a light receiving means including a plurality of linear optical fibers fixed in said cylinder, and a photoelectric transducer for converting the opticaL output of said light receiving means into an electric signal.
Claim 16
Dependent Claim
88 words
A system according to claim 12 wherein said first and second video signal generators each comprise a stationary member having a linear slit therein, a circular disc having a spiral slit, said disc being rotated at a predetermined speed, a photoelectric transducer for converting light into an electric signal, and an optical system for focusing light corresponding to the pattern to be recorded onto said member and disc, said focused light being transmitted through said linear slit and said spiral slit of said disc upon said photoelectric transducer.
Claim 17
Dependent Claim
63 words
A system according to claim 12 wherein said first and second video signal generators each comprise a scanning generator for generating a sweep signal of a predetermined frequency, a flying spot scanning tube supplied with said sweep signal from said scanning generator and an optical system for focusing a bright spot of the flying spot scanning tube upon a pattern to be recorded.
Claim 18
Dependent Claim
47 words
A system according to claim 12 wherein said first and second video signal generators each comprise an image pick-up tube, an optical system for focusing the image of a pattern on the target of said image pick-up tube, and means to scan said image on said target.
Claim 19
Dependent Claim
33 words
A system according to claim 1 wherein said first and second adjusts means respectively adjusting gaps between said recording medium and said first and second recording means to values determined by Paschen''s law.
Claim 20
Dependent Claim
31 words
A system according to claim 19 wherein said first and second adjusting means are respectively disposed on opposite sides of said recording means relative to said first and second recording means.
Claim 21
Dependent Claim
26 words
A facsimile recording system according to claim 19 wherein said first and second adjusting means are respectively disposed to contact one side of said recording medium
Claim 22
Dependent Claim
47 words
A facsimile recording system according to claim 19 wherein said first and second adjusting means comprise first and second rollers maintained at predetermined potentials, and disposed opposite said first and second recording means, respectively, and on opposite sides of said recording medium relative to said recording means.
References Cited (Backward Citations)
US2213876A
Cited
US3479451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |