US3798657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical graphic moisture retaining recording cassette
Assignee: ALFAX PAPER & ENGINEERING COMPANY Inc
•
Filing: 1972-07-10
•
Granted: 1974-03-19
•
Expires: 1992-07-10
Abstract
Abstract A multi-channel electrolytic recorder using a disposable cassette comprises a flat base with an upstanding socket receiving a cassette. The cassette fits in the socket and has integral circular cover and sidewall portions around a compartment for a roll of moist recording paper. A wire electrode extends from underneath the lower sheet, where is makes contact with a terminal on the base, upwardly adjacent an exit for the paper formed by a slit in the sidewall. A printed series of parallel conductive lines on a flexible insulating sheet presses the paper against the wire electrode with which the sheet cooperates to mark the paper with electrical signals applied to the conductive lines. The printed sheet also closes the exit slit to retain the moisture in the paper.
Inventors
- 👤 J Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/39; B41J2/395; G; G01; G01D; G01D15/00; G01D15/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
An electric graphic recording cassette comprising: a roll of moist electric recording web, an enclosure confining the roll, an exit aperture for the web from said enclosure, and a marking electrode assembly supported on the enclosure at said aperture with a flexed side surface of the electrode resiliently engaging the web passing through the aperture, the aperture being the sole opening into the enclosure, and said electrode assembly flexibly extending substantially across the aperture to form a moisture retaining barrier for the aperture.
Claim 2
Dependent Claim
83 words
An electric graphic recording cassette comprising: a roll of moist electric recording web, an enclosure confining the roll, an exit aperture for the web from said enclosure, and a marking electrode assembly supported on the enclosure at said aperture with a flexed side surface of the electrode resiliently engaging the web passing through the aperture, the aperture being the sole opening into the enclosure, and said electrode assembly flexibly extending substantially across the aperture to form a moisture retaining barrier for the aperture.
Claim 3
Dependent Claim
17 words
A cassette according to claim 1 wherein said one electrode has an area substantially closing the aperture.
Claim 4
Dependent Claim
71 words
A cassette according to claim 2 wherein a second electrode is supported on the enclosure at the aperture and the area of the first said electrode comprises a flexible insulative support having a planar surface and a plurality of elongate, flexible conductive strips on the surface in insulative relation to each other and having recording portions opposed to the second electrode at a recording plane, the support and strips being flexed.
Claim 5
Dependent Claim
50 words
A cassette according to claim 3 wherein said strips have terminal portions for connection to a plurality oF electric signal inputs, the support being flexed intermediate the recording portions and terminal portions so that the terminal portions are disposed for connection to signal input means out of the recording plane.
Claim 6
Dependent Claim
27 words
A cassette according to claim 3 wherein said one electrode is resiliently opposed by the second electrode extending transversely of the recording portions of the conductive strips.
Claim 7
Dependent Claim
21 words
A cassette according to claim 1 wherein the enclosure forms an integral, disposable unit attachable and detachable from a recorder base.
Claim 8
Dependent Claim
16 words
A cassette according to claim 6 wherein the enclosure is formed of thin sheet plastic material.
Claim 9
Dependent Claim
34 words
A cassette according to claim 6 in combination with a recorder base comprising means physically receiving and positioning the enclosure and feed means for drawing the web from the enclosure past the marking electrodes.
Claim 10
Dependent Claim
21 words
A recorder according to claim 8 in combination with a signal source and means for connecting the source to the electrodes.
Claim 11
Dependent Claim
26 words
A recorder according to claim 9 wherein the web is a moist electrolytic paper, the closing of said exit aperture substantially retaining moisture with the enclosure.
Claim 12
Dependent Claim
26 words
A recorder according to claim 8 wherein the web is a moist electrolytic paper, the closing of said exit aperture substantially retaining moisture with the enclosure.
Claim 13
Dependent Claim
26 words
A recorder according to claim 1 wherein the web is a moist electrolytic paper, the closing of said exit aperture substantially retaining moisture with the enclosure.
References Cited (Backward Citations)
US3363261A
Cited
US3545004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |