Hybrid electrostatic-impact printer

Claim 2

A hybrid printer for use at a communications terminal wherein alpha-numeric information in printed form is substantially simultaneously observable with the transmission or receipt of electrical signals relating to said alpha-numeric information, comprising: teletypewriter means for simultaneously printing alpha-numeric information by mechanical impact and transmitting electrical signals associated with said alpha-numeric information; web advance means comprising a capstan in operative engagement with a pinch roller; electrostatic printing means rotatably connected to said web advance means; and means for moving said web advance means from a first position with said web advance means in operating engagement with said teletypewriter means and with said electrostatic printing means in a non-operating mode to a second position with said web advance means removed from operating engagement with said teletypewriter means and with said electrostatic printing means in an operating mode.

Claim 3

A printer according to claim 1, wherein said moving means moves said web advance means rearwardly and upwardly from said teletypewriter means.

Claim 4

A printer according to claim 1, comprising in addition track guides positioned on opposite sides of said pinch roller and wherein said pinch roller has pins extending axially outwardly from the sides of said pinch roller and engaging said track guides and said moving means has a cable attached to one of said pins for moving said web advance means along said track guide.

Claim 5

A printer according to claim 1, wherein said pinch roller has a shaft extending outwardly beyond both sides of said pinch roller and said electrostatic printing means comprises a print head having first and second arms rotably mounted on said shaft, one arm on each side of said pinch roller.

Claim 6

A printer according to claim 4, wherein said moving means comprises a pinion gear fixedly connected to one of said arms, and a rack in operative engagement with said pinion gear.

Claim 7

A hybrid printer for use at a communications terminal for receiving and transmitting messages electronically and imprinting the messages received and transmitted, which comprises: teletypewriter means for simultaneously printing alpha-numeric information and transmitting electrical signals associated with said alpha-numeric information, having mechanical impact means moving horizontally during printing; web advance means comprising a pinch roller and a capstan, wherein said capstan is positioned above the horizontal plane through the axis of said pinch roller, said pinch roller having first and second pins extending axially outwardly beyond each of the sides of said pinch roller; electrostatic printing means having a print head with image forming and developing means in juxtaposition to said pinch roller, and first and second arms extending from opposite sides of said print head and rotatably mounted on said pins; means for moving said web advance means from a first position in operative engagement with said Teletype means to a second position removed from said Teletype means, while moving said electrostatic printing means from a non-operating mode to an operatIng mode, comprising first and second guide tracks on opposite sides of said pinch roller engaging said first and second pins, means for moving said pins along said guide tracks, a pinion gear affixed to said first arm and rotatably coaxially mounted on one of said pins, and a rack in gear tooth engagement with said pinion gear; and means for controlling the movement of said web advance means in operative connection with said Teletype means and said electrostatic printing means.

Claim 8

A hybrid printer for use at a communications terminal for receiving and transmitting messages electronically and imprinting the messages received and transmitted, which comprises: teletypewriter means for simultaneously printing alpha-numeric information and transmitting electrical signals associated with said alpha-numeric information, having mechanical impact means moving horizontally during printing; web advance means comprising a pinch roller and a capstan, wherein said capstan is positioned above the horizontal plane through the axis of said pinch roller, said pinch roller having first and second pins extending axially outwardly beyond each of the sides of said pinch roller; electrostatic printing means having a print head with image forming and developing means in juxtaposition to said pinch roller, and first and second arms extending from opposite sides of said print head and rotatably mounted on said pins; means for moving said web advance means from a first position in operative engagement with said Teletype means to a second position removed from said Teletype means, while moving said electrostatic printing means from a non-operating mode to an operatIng mode, comprising first and second guide tracks on opposite sides of said pinch roller engaging said first and second pins, means for moving said pins along said guide tracks, a pinion gear affixed to said first arm and rotatably coaxially mounted on one of said pins, and a rack in gear tooth engagement with said pinion gear; and means for controlling the movement of said web advance means in operative connection with said Teletype means and said electrostatic printing means.

Claim 9

A printer according to claim 6, wherein said means for moving said web advance includes a solenoid drum connected to one end of a cable with the other end of said cable connected to one of said pins.

Claim 10

A hybrid printer for use at a communications terminal wherein alpha-numeric information in printed form is substantially simultaneously observable with the transmission or receipt of electrical signals relating to said alpha-numeric information, comprising: teletypewriter means for simultaneously printing alpha-numeric information by mechanical impact and transmitting electrical signals associated with sald alpha-numeric information; web advance means for moving a web in synchrony with the printing of said alpha-numeric information; electrostatic printing means in juxtaposition to said web advance means; and means for moving said web advance means in a first position with said web advance means in operating engagement with said teletypewriter means and with said electrostatic printing means in a non-operating mode to a second position with said web advance means removed from operative engagement with said teletypewriter mechanism and with said electrostatic printing means in an operating mode.

Claim 11

A hybrid printer for use at a communications terminal wherein alpha-numeric information in printed form is substantially simultaneously observable with the transmission or receipt of electrical signals relating to said alpha-numeric information, comprising: teletypewriter means for simultaneously printing alpha-numeric information by mechanical impact and transmitting electrical signals associated with sald alpha-numeric information; web advance means for moving a web in synchrony with the printing of said alpha-numeric information; electrostatic printing means in juxtaposition to said web advance means; and means for moving said web advance means in a first position with said web advance means in operating engagement with said teletypewriter means and with said electrostatic printing means in a non-operating mode to a second position with said web advance means removed from operative engagement with said teletypewriter mechanism and with said electrostatic printing means in an operating mode.