US4183032A — Electrostatic recording medium with elongated con…

Claim 1

Independent Claim 236 words

An electrostatic recording medium for use with electrostatic recording apparatus comprising a plurality of recording electrode arrays spaced apart in juxtaposition to a plurality of complementary electrodes, said arrays comprising electrodes spaced apart across said medium from one edge of a recording area to the opposite edge of said area, first switching means selectively connecting like-numbered electrodes of said arrays to a first source of potential, and second switching means selectively connecting said complementary electrodes to a second source of potential to produce a limited electrostatic field in said medium in the region between the selected complementary electrode and the selected one of said like-numbered electrode juxtaposed with respect to said selected complementary electrode, said electrostatic recording medium comprising: an insulating resin base; a conductive layer on said insulating base, said conductive layer being divided into a plurality of elongated segments arranged side-by-side from said one edge to said opposite edge, each of said conductive layer segments being electrically separated from adjacent said segments; a plurality of conductive portions extending through said base and exposed at the underside thereof to be brought into contact, selectively, with a respective one of the complementary electrodes, each of said conductive portions being electrically connected on the other side of said base with a respective one of said segments, whereby said conductive portions selectively connect said complementary electrodes to said elongated segments; and a dielectric layer on said conductive layer.

Claim 2

Dependent Claim 236 words

An electrostatic recording medium for use with electrostatic recording apparatus comprising a plurality of recording electrode arrays spaced apart in juxtaposition to a plurality of complementary electrodes, said arrays comprising electrodes spaced apart across said medium from one edge of a recording area to the opposite edge of said area, first switching means selectively connecting like-numbered electrodes of said arrays to a first source of potential, and second switching means selectively connecting said complementary electrodes to a second source of potential to produce a limited electrostatic field in said medium in the region between the selected complementary electrode and the selected one of said like-numbered electrode juxtaposed with respect to said selected complementary electrode, said electrostatic recording medium comprising: an insulating resin base; a conductive layer on said insulating base, said conductive layer being divided into a plurality of elongated segments arranged side-by-side from said one edge to said opposite edge, each of said conductive layer segments being electrically separated from adjacent said segments; a plurality of conductive portions extending through said base and exposed at the underside thereof to be brought into contact, selectively, with a respective one of the complementary electrodes, each of said conductive portions being electrically connected on the other side of said base with a respective one of said segments, whereby said conductive portions selectively connect said complementary electrodes to said elongated segments; and a dielectric layer on said conductive layer.

Claim 3

Dependent Claim 75 words

An electrostatic recording medium, as claimed in claim 1, comprising a plurality of said conductive portions arranged substantially equidistantly in a row aligned with, and making connection with, a respective one of said conductive layer segments, there being at least one such row for each of said segments, and each of said rows extending in the direction of movement of said electrostatic recording medium in the space between said electrode arrays and said complementary electrodes.

Claim 4

Dependent Claim 85 words

An electrostatic recording medium, as claimed in claim 1, further comprising a plurality of conductive webs equal in number to said conductive segments and attached to the underside of said insulating base of said recording medium, each of said webs being connected to at least one of said conductive portions to be connected thereby to a respective one of said conductive segments, each of said webs being electrically isolated from any other of said conductive portions connected to a different one of said conductive segments.

Claim 5

Dependent Claim 24 words

An electrostatic recording medium as claimed in claim 1, further comprising an intermediate resistance layer interposed between said conductive layer and said dielectric layer.

Claim 6

Dependent Claim 33 words

An electrostatic recording medium as claimed in claim 4, wherein said intermediate resistance layer is adjusted such that its volume resistivity is in the range between 10 7 and 10 12 Ω cm.

Claim 7

Dependent Claim 164 words

An electrostatic recording medium for electrostatic recording apparatus having a plurality of recording electrodes arranged into a plurality of recording electrode arrays wherein one recording electrode from each recording electrode array is connected in common to one of a plurality of common switches and each recording electrode array is associated with a complementary electrode for recording an impulse on the recording medium when the impulse is selectively applied to one of the common switches and one associated complementary electrode, comprising, an insulating resin base, a plurality of conductive layer segments on said insulating resin base each associatable with at least one of said recording electrode arrays and with said associated complementary electrode of said one array wherein said conductive segments are spaced apart and electrically isolated from each other on said base, for recording the impulse on the recording medium only in the vicinity of the one complementary electrode selected, and a dielectric layer on said insulating resin base overlaying said conductive layer segments.

Claim 8

Dependent Claim 164 words

An electrostatic recording medium for electrostatic recording apparatus having a plurality of recording electrodes arranged into a plurality of recording electrode arrays wherein one recording electrode from each recording electrode array is connected in common to one of a plurality of common switches and each recording electrode array is associated with a complementary electrode for recording an impulse on the recording medium when the impulse is selectively applied to one of the common switches and one associated complementary electrode, comprising, an insulating resin base, a plurality of conductive layer segments on said insulating resin base each associatable with at least one of said recording electrode arrays and with said associated complementary electrode of said one array wherein said conductive segments are spaced apart and electrically isolated from each other on said base, for recording the impulse on the recording medium only in the vicinity of the one complementary electrode selected, and a dielectric layer on said insulating resin base overlaying said conductive layer segments.

Claim 9

Dependent Claim 108 words

An electrostatic recording medium according to claim 6, wherein said recording medium is moveable in a selected direction past the plurality of recording electrodes, said conductive layer segments are arranged in spaced bands along said insulating resin base in the direction of its motion and each of said conductive layer segments includes at least one conductive portion extending downwardly through said insulative base and terminating at the underside of said insulative base whereby said conductive layer segments are closely associatable with said recording electrode arrays and said complementary electrodes are closely associated with the end of said conductive portion terminated at the underside of said insulating resin base.

Claim 10

Dependent Claim 35 words

An electrostatic recording medium according to claim 7, further including a web portion connected to each conductive portion respectively adjacent the underside of said insulative resin base and extending parallel to said conductive layer segments.

Claim 11

Dependent Claim 28 words

An electrostatic recording medium according to claim 6, further including a resistance layer disposed between said conductive layer segments with said insulating resin base, and said dielectric layer.

Claim 12

Dependent Claim 29 words

An electrostatic recording medium according to claim 9, wherein said resistance layer has a volume resistivity in the range of between about 10 7 and 10 12 ohm cm.

Claim 13

Dependent Claim 21 words

An electrostatic recording medium according to claim 10 wherein said resistance layer is between about 3 and 20 microns in thickness.

Claim 14

Dependent Claim 21 words

An electrostatic recording medium according to claim 10 wherein said dielectric layer is between about 2 and 7 microns in thickness.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-01-07	1983-07-09	1984-01-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-01-07	1987-07-09	1988-01-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-01-07	1991-07-09	1992-01-08	$7700.00	Window Closed / Lapsed

Electrostatic recording medium with elongated conductive segments

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