Laser facsimile transceiver

Claim 2

A facsimile transceiver for (a) recording incoming information, (b) transmitting outgoing information or (c) simultaneously recording incoming information aNd transmitting outgoing information comprising a rotatable polygonal mirror having a plurality of reflecting side surfaces angularly disposed about an axis of rotation, rotating means for rotating the mirror about its axis of rotation, first supporting means for supporting a radiation sensitive receiving document on a first side of the mirror, second supporting means for supporting a send document having outgoing information on a second side of the mirror, generating means for generating first and second beams of radiation, modulating means for modulating the intensity of the first beam, first directing means for angularly directing the first beam against a reflective side surface of the mirror such that the first beam is reflected to the first side of the mirror to be swept across the receiving document when the mirror is rotated, second directing means for angularly directing the second beam against a reflective side surface of the mirror such that the second beam is reflected to the second side of the mirror to be swept across the send document when the mirror is rotated, sensing means for sensing radiation reflected from the send document to generate an outgoing signal representative of the outgoing information of the send document, receiving and transmitting means for (a) operating the modulating means in accordance with incoming signals received by the receiving and transmitting means and (b) transmitting the outgoing signals from the sensing means, sync means responsive to the receiving and transmitting means for operating the rotating means during (a) transmission of signals to transmit outgoing information, (b) receipt of incoming signals to record incoming information or (c) simultaneous receipt of incoming signals and transmission of outgoing signals to simultaneously record incoming information and transmit outgoing information. said reflecting side surfaces of the mirror being angularly disposed to reflect repetative sweeps of the first and second beams through arcs which are greater than the widths of the send and receiving documents, and means for incrementally moving the send document and the receiving document only when the first and second beams are reflected to the sides of the respective send and receiving documents.

Claim 3

A facsimile transceiver for (a) recording incoming information, (b) transmitting outgoing information or (c) simultaneously recording incoming information and transmitting outgoing information comprising a rotatable polygonal mirror having a plurality of reflecting side surfaces angularly disposed about an axis of rotation of the mirror, rotating means for rotating the mirror about its axis of rotation, first supporting means for constraining a radiation sensitive receiving document on a first side of the mirror in a circular arc having its center aligned with the axis of rotation of the mirror, second supporting means for constraining a send document on a second side of the mirror in a circular arc having its center aligned with the axis of rotation of the mirror, laser means for generating a coherent beam of radiation, beam splitting means for splitting the coherent beam of radiation into first and second beams, modulating means for modulating the intensity of the first beam, first directing means for angularly directing the first beam against a reflecting side surface of the mirror such that the first beam is reflected to the first side of the mirror to be swept across the receiving document when the mirror is rotated, second directing means for angularly directing the second beam against a reflecting side surface of the mirror such that the second beam is reflected to the second side of the mirror to be swept across the send document when the mirror is rotated, lens means having a focal axis aligned with the approach path of the first beam to the mirror for focusing reflected radiation from the send document and mirror to a focal point, photoelectric means at the focal point for sensing the reflected radiation, receiving and transmitting means for (a) operating the modulating means in accordance with incoming signals received by the receiving and transmitting means and (b) transmitting the outgoing signals from the photoelectric means, sync means responsive to the receiving and transmitting means for operating the rotating means during (a) transmission of signals, (b) receipt of incoming signals or (c) simultaneous receipt of incoming signals and transmission of outgoing signals, first moving means controlled by the sync means for moving the receiving document parallel to the axis of rotation of the mirror, second moving means controlled by the sync means for moving the send document parallel to the axis of rotation of the mirror, said reflecting side surfaces of the mirror being angularly disposed to reflect repetative sweeps of the first and second beams through arcs which are greater than the arcs in which the send and receiving documents, respectively, are constrained, said first moving means includes means for incrementally moving the receiving document parallel to the axis of rotation of the mirror only when the first beam is reflected to the sides of the receiving document, and said second moving means includes means for incrementally moving the send document only when the second beam is reflected to the sides of the send document.

Claim 4

A facsimile transceiver for (a) recording incoming information, (b) transmitting outgoing information or (c) simultaneously recording incoming information and transmitting outgoing information comprising a rotatable polygonal mirror having a plurality of reflecting side surfaces angularly disposed about an axis of rotation of the mirror, rotating means for rotating the mirror about its axis of rotation, first supporting means for constraining a radiation sensitive receiving document on a first side of the mirror in a circular arc having its center aligned with the axis of rotation of the mirror, second supporting means for constraining a send document on a second side of the mirror in a circular arc having its center aligned with the axis of rotation of the mirror, laser means for generating a coherent beam of radiation, beam splitting means for splitting the coherent beam of radiation into first and second beams, modulating means for modulating the intensity of the first beam, first directing means for angularly directing the first beam against a reflecting side surface of the mirror such that the first beam is reflected to the first side of the mirror to be swept across the receiving document when the mirror is rotated, second directing means for angularly directing the second beam against a reflecting side surface of the mirror such that the second beam is reflected to the second side of the mirror to be swept across the send document when the mirror is rotated, lens means having a focal axis aligned with the approach path of the first beam to the mirror for focusing reflected radiation from the send document and mirror to a focal point, photoelectric means at the focal point for sensing the reflected radiation, receiving and transmitting means for (a) operating the modulating means in accordance with incoming signals received by the receiving and transmitting means and (b) transmitting the outgoing signals from the photoelectric means, sync means responsive to the receiving and transmitting means for operating the rotating means during (a) transmission of signals, (b) receipt of incoming signals or (c) simultaneous receipt of incoming signals and transmission of outgoing signals, first moving means controlled by the sync means for moving the receiving document parallel to the axis of rotation of the mirror, second moving means controlled by the sync means for moving the send document parallel to the axis of rotation of the mirror, said reflecting side surfaces of the mirror being angularly disposed to reflect repetative sweeps of the first and second beams through arcs which are greater than the arcs in which the send and receiving documents, respectively, are constrained, said first moving means includes means for incrementally moving the receiving document parallel to the axis of rotation of the mirror only when the first beam is reflected to the sides of the receiving document, and said second moving means includes means for incrementally moving the send document only when the second beam is reflected to the sides of the send document.