Fibre optics element for the image transmission system of a facsimile

Claim 2

A bundle of optical fibers with the core element having a refractive index n, comprising a first group of optical fibers having one end thereof cut in a first plane and a second group of optical fibers having one end thereof cut in a second plane, said first plane skewed up to sin 1 (1/n) relative to a third plane normal to the lengthwise direction of said optical fibers and said second plane being skewed at an angle smaller than 90* relative to said third plane.

Claim 3

In facsimile transmitting apparatus including means for producing a light spot moving in a given direction, means for transporting image carrying medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to the axis of said optical fibers and said second group optical fibers having one end thereof cut in a second plane (B) being skewed at an angle smaller than 90* relative to said third plane; b. said moving light spot being made to be incident on the other end (22) of said first group of optical fibers; c. said image carrying medium (11) being in close proximity to said second plane (B); and d. photoelectrical means (16) adjacent said first plane for picking up light reflected from said image carrying medium.

Claim 4

In facsimile transmitting apparatus including means for producing a light spot moving in a given direction, means for transporting image carrying medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to the axis of said optical fibers and said second group optical fibers having one end thereof cut in a second plane (B) being skewed at an angle smaller than 90* relative to said third plane; b. said moving light spot being made to be incident on the other end (22) of said first group of optical fibers; c. said image carrying medium (11) being in close proximity to said second plane (B); and d. photoelectrical means (16) adjacent said first plane for picking up light reflected from said image carrying medium.

Claim 5

In facsimile receiving apparatus including means for producing a light spot moving in a given direction, said means including means for modulating said light spot in accordance with a signal transmitted from a transmitting station, and means for transporting image developing medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to said axes and said second group optical fibers having one end thereof cut in a second plane (B) at an angle smaller than 90* relative to said third plane; b. said signal modulated moving light spot being made to be incident on the other end (22) of said second group of optical fibers; and c. said image developing medium being close proximity to said second plane.

Claim 6

In facsimile receiving apparatus including means for producing a light spot moving in a given direction, said means including means for modulating said light spot in accordance with a signal transmitted from a transmitting station, and means for transporting image developing medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to said axes and said second group optical fibers having one end thereof cut in a second plane (B) at an angle smaller than 90* relative to said third plane; b. said signal modulated moving light spot being made to be incident on the other end (22) of said second group of optical fibers; and c. said image developing medium being close proximity to said second plane.

Claim 7

In facsimile transmitting and receiving apparatus operable in image transmission and reconstruction modes of operation, including means for producing a light spot moving in a given direction, said means including means for modulated said light spot in accordance with a signal transmitted from a transmitting station and means for shifting said moving light spot in a direction normal to said given direction, means for transporting image carrying medium and image developing medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to said axes and said second group optical fibers having one end thereof cut in a second plane (B) at an angle smaller than 90* relative to said third plane; b. said moving light spot being made to be incident on the other end (22) of said first group optical fibers during said image transmission mode; c. said signal modulated moving light spot being made to be incident on the other end (22) of said second group of optical fibers during said image reconstruction mode; d. said image carrying medium and said image developing medium being in close proximity to said second plane; and e. photoelectrical means adjacent said first plane for picking up light reflected from said image carrying medium.

Claim 8

In facsimile transmitting and receiving apparatus operable in image transmission and reconstruction modes of operation, including means for producing a light spot moving in a given direction, said means including means for modulated said light spot in accordance with a signal transmitted from a transmitting station and means for shifting said moving light spot in a direction normal to said given direction, means for transporting image carrying medium and image developing medium in a direction normal to said given direction, the improvement comprising: a. a bundle (10) of optical fibers with the core element having a refractive index n, comprising first (10a) and second (10b) groups of optical fibers successively arranged with their axes perpendicular to said given direction, said first group optical fibers having one end thereof cut in a first plane (A) being skewed up to sin 1 (1/n) relative to a third plane normal to said axes and said second group optical fibers having one end thereof cut in a second plane (B) at an angle smaller than 90* relative to said third plane; b. said moving light spot being made to be incident on the other end (22) of said first group optical fibers during said image transmission mode; c. said signal modulated moving light spot being made to be incident on the other end (22) of said second group of optical fibers during said image reconstruction mode; d. said image carrying medium and said image developing medium being in close proximity to said second plane; and e. photoelectrical means adjacent said first plane for picking up light reflected from said image carrying medium.