← Back to Patent Explorer
US3872248A Expired / Lapsed US ⏱️ 0.0 years remaining

Facsimile apparatus

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1973-02-16
•
Granted: 1975-03-18
•
Expires: 1993-02-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A facsimile transceiver comprising a document/copy receiving drum, a motor for rotation of the drum about the drum axis and a read/write head having a fiber optic scanner mounted on a rotating shaft for linear movement in a direction parallel with the drum axis. The head comprises a plurality of rollers having axes slightly skewed with respect to the axis of the shaft to advance the head as the shaft rotates. By biasing the head so as to pivot about the shaft into contact with a document carried by the drum, the appropriate spacing between the end of the fiber optic scanner and the document being scanned is assured.

Inventors

  • 👤 Luther R Winters

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/06; H04N1/0671; H04N1/0678; H04N1/024; H04N1/08; H04N1/0804; H04N1/0813; H04N1/083; H04N1/0839

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 133 words
A facsimile system comprising: a document-carrying drum having at least one surface discontinuity extending parallel to the axis of said drum; means for mounting said drum for rotational motion about said drum axis; means for driving said drum through said rotational motion about said drum axis; a reading head; means for supporting said reading head for movement along the surface of said drum in a direction parallel to said axis of said drum; fiber optic scanning means mounted in a fixed position on said head for detecting the information content on a document carried by said drum; and means for biasing said head toward said drum to allow said head to ride on the document carried by said drum thereby maintaining a fixed distance between said document and said fiber optic scanning means.
Claim 2
Dependent Claim 133 words
A facsimile system comprising: a document-carrying drum having at least one surface discontinuity extending parallel to the axis of said drum; means for mounting said drum for rotational motion about said drum axis; means for driving said drum through said rotational motion about said drum axis; a reading head; means for supporting said reading head for movement along the surface of said drum in a direction parallel to said axis of said drum; fiber optic scanning means mounted in a fixed position on said head for detecting the information content on a document carried by said drum; and means for biasing said head toward said drum to allow said head to ride on the document carried by said drum thereby maintaining a fixed distance between said document and said fiber optic scanning means.
Claim 3
Dependent Claim 19 words
The facsimile system of claim 1 wherein said discontinuity comprises a slot for receiving the edge of a document.
Claim 4
Dependent Claim 62 words
The facsimile system of claim 1 wherein said fiber optic scanning means comprises a plurality of fiber optics, at least one of said fiber optics transmitting light to said drum so as to illuminate the information content on said document and at least one other of said fiber optics transmitting light reflected from said document representing the information content of the document.
Claim 5
Dependent Claim 43 words
The facsimile system of claim 3 wherein said means for supporting said head comprises a single shaft, said means for biasing said head toward said drum causing said head to pivot about said shaft into contact with the document carried by said drum.
Claim 6
Dependent Claim 32 words
The facsimile system of claim 4 including drive means coupled to said single shaft for rotation thereof, said head including means engaging said rotating shaft for advancing said head along said shaft.
Claim 7
Dependent Claim 46 words
The facsimile system of claim 5 wherein said means for advancing said head comprises roller means engaging said shaft, said roller means having axes slightly skewed with respect to the axis of said shaft so as tO cause said head to advance as said shaft rotates.
Claim 8
Dependent Claim 72 words
The facsimile system of claim 6 wherein said roller means comprises a plurality of rollers, said head comprising separable portions forming an opening receiving said shaft at the junction therebetween, each of said portions having at least one of said rollers mounted thereon, said head further comprising bias means for maintaining said separable portions in close proximity so as to maintain said rollers in contact with said shaft under facsimile operating conditions.
Claim 9
Dependent Claim 40 words
The facsimile system of claim 7 further comprising release means for overcoming said bias means so as to separate said separable portions and thereby permit said head to slide more freely on said shaft without substantial resistance from said rollers.
Claim 10
Dependent Claim 96 words
The facsimile system of claim 8 wherein said head further comprises stylus means for marking on a copy medium carried by said drum when said system is utilized in the receiving mode, said head further comprising means for cutting the copy medium along a line parallel with the axis of the drum and cutter support means permitting said cutting means to be selectively brought into cutting engagement with the copy medium, said cutter support means actuating said release means to overcome said bias means when said cutting means is brought into engagement with the copy medium.
Claim 11
Dependent Claim 213 words
A facsimile system comprising: a document-carrying drum comprising a substantially cylindrical surface including at least one discontinuity in said surface extending substantially parallel to the axis of the drum for receiving an edge of the document; means for mounting said drum for rotational motion about the axis of the drum; motor means coupled to said mounting means for driving said drum through rotational motion about the drum axis; a reading head comprising fiber optic scanning means including a plurality of fiber optics, at least one of said fiber optics transmitting light to said document so as to illuminate the information content on the document and at least one other of said fiber optics transmitting light reflected from the document representing the information content of the document, said head comprising a surface adapted to contact said document and bridge said discontinuity; means for mounting said head with said contact surface juxtaposed to the document of said drum; and means for biasing said head toward said drum so as to force said contact surface into contact with the document, said head riding on said document during scanning so as to maintain a substantially fixed distance between the ends of the fiber optics and the document including portions thereof adjacent but not received by said discontinuity.
Claim 12
Dependent Claim 213 words
A facsimile system comprising: a document-carrying drum comprising a substantially cylindrical surface including at least one discontinuity in said surface extending substantially parallel to the axis of the drum for receiving an edge of the document; means for mounting said drum for rotational motion about the axis of the drum; motor means coupled to said mounting means for driving said drum through rotational motion about the drum axis; a reading head comprising fiber optic scanning means including a plurality of fiber optics, at least one of said fiber optics transmitting light to said document so as to illuminate the information content on the document and at least one other of said fiber optics transmitting light reflected from the document representing the information content of the document, said head comprising a surface adapted to contact said document and bridge said discontinuity; means for mounting said head with said contact surface juxtaposed to the document of said drum; and means for biasing said head toward said drum so as to force said contact surface into contact with the document, said head riding on said document during scanning so as to maintain a substantially fixed distance between the ends of the fiber optics and the document including portions thereof adjacent but not received by said discontinuity.
Claim 13
Dependent Claim 19 words
The facsimile system of claim 10 wherein said discontinuity comprises a slot for receiving the edge of a document.
Claim 14
Dependent Claim 26 words
The facsimile system of claim 10 wherein said biasing means comprises resilient means forcing said contact surface of said reading head into contact with the document.
Claim 15
Dependent Claim 61 words
The facsimile system of claim 10 wherein the area of the document in optical communication with said fiber optics and the area of the document contacted by the contact surface are on a line substantially parallel with the axis of the drum and the axial discontinuity in the surface of the drum and substantially perpendicular to the motion of the document.
Claim 16
Dependent Claim 26 words
The facsimile system of claim 13 wherein said contact surface comprises part of an arcuate surface of said head juxtaposed to the document on said drum.

References Cited (Backward Citations)

US1754503A Cited
US3201512A Cited
US3280251A Cited
US3585289A Cited
US3735040A Cited
US3739095A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-03-17 1978-09-16 1979-03-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-17 1982-09-16 1983-03-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-17 1986-09-16 1987-03-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag