Patent US2143126A successfully refreshed from Google Patents.
US4606267A
Expired / Lapsed
US
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Electrothermal page printer
Assignee: Alcatel Lucent NV
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Filing: 1984-11-13
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Granted: 1986-08-19
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Expires: 2004-11-13
Abstract
Abstract This invention relates to a page printer having an electro-thermal dot-matrix printing mechanism. The latter comprises at least one print plate which is disposed parallel in relation to the print line and radially in relation to the platen, which is hooked at both ends into a tensioning device. The print plate consists of a carrier plate made of material having relatively good electrical and heat-conducting properties. It is applied with its front surface to the thermo-sensitive recording medium on which recordings are made via a plurality of closely adjacent heating elements. These heating elements are deposited onto at least one of the lateral faces of the carrier plate, made flush with the front surface, and are conductively connected to the carrier plate. The remaining part of each of the lateral faces is covered, throughout the widths of the heating elements, with a layer of insulating material on which the conducting paths extending to the heating elements are disposed. The carrier plate serves as the common electric return conductor. On the carrier plate, a number of integrated circuits are disposed which, with their outputs, are connected to the conducting paths extending to the heating elements. These integrated circuits serve to convert the control instructions for the heating elements, as applied via terminals on the rearward longitudinal edge of the carrier plate.
Inventors
- 👤 Gerhard Wessel
- 👤 Heinz Ebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:37
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/335; B41J2/33555; B41J2/33565; B41J2/345
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
149 words
A page printer with an electronic dot-matrix printing mechanism having a platen adapted for transporting a recording medium at least one print plate disposed along a print line of said platen, comprising: at least one carrier plate having a front surface to be applied to the recording medium when in an operative position, and at least one lateral face adjacent said front surface, said front surface having a coating thereon, said coating being hard with respect to said carrier plate to provide a wear resistant surface, a plurality of closely spaced heating elements, disposed on said lateral face of said carrier plate and flush with said front surface of said carrier plate, said heating elements being in direct contact with said recording medium when said carrier plate is in said operative position, and individual conducting paths, connected to said heating elements, to provide control instructions to said heating elements.
Claim 2
Dependent Claim
149 words
A page printer with an electronic dot-matrix printing mechanism having a platen adapted for transporting a recording medium at least one print plate disposed along a print line of said platen, comprising: at least one carrier plate having a front surface to be applied to the recording medium when in an operative position, and at least one lateral face adjacent said front surface, said front surface having a coating thereon, said coating being hard with respect to said carrier plate to provide a wear resistant surface, a plurality of closely spaced heating elements, disposed on said lateral face of said carrier plate and flush with said front surface of said carrier plate, said heating elements being in direct contact with said recording medium when said carrier plate is in said operative position, and individual conducting paths, connected to said heating elements, to provide control instructions to said heating elements.
Claim 3
Dependent Claim
18 words
A page printer as claimed in claim 1, wherein said carrier plate consists of an electrically conductive material.
Claim 4
Dependent Claim
15 words
A page printer as claimed in claim 2, wherein said carrier plate is heat conductive.
Claim 5
Dependent Claim
23 words
A page printer as claimed in claim 2, wherein said heating elements are connected to said carrier plate and to said conducting paths.
Claim 6
Dependent Claim
24 words
A page printer as claimed in claim 1, wherein said carrier plate consists of an insulating material and has an electrically conductive lateral face.
Claim 7
Dependent Claim
15 words
A page printer as claimed in claim 5, wherein said carrier plate is heat conductive.
Claim 8
Dependent Claim
25 words
A page printer as claimed in claim 5, wherein said heating elements are connected to said electrically conductive lateral face and to said conducting paths.
Claim 9
Dependent Claim
57 words
A page printer as claimed in claim 1, further comprising: an insulating layer, disposed on said carrier plate surface, except for a portion of said surface on which said heating elements are disposed, having a thickness equal to the height of said heating elements, and on which said conducting paths extending to said heating elements are disposed.
Claim 10
Dependent Claim
30 words
A page printer as claimed in claim 1, wherein a front surface of said carrier plate, including said adjacent heating elements, is concavely equal to the curvature of said platen.
Claim 11
Dependent Claim
20 words
A page printer as claimed in claim 7, wherein said front surface of said carrier plate is nitrated or nitrified.
Claim 12
Dependent Claim
27 words
A page printer as claimed in claim 1, wherein said carrier plate is longer than a print field width and is retained between horizontally acting clamping means.
Claim 13
Dependent Claim
28 words
A page printer as claimed in claim 11, wherein said clamping means are adjustable in the plane of said carrier plate as well as vertically in relation thereto.
Claim 14
Dependent Claim
18 words
A page printer as claimed in claim 1, wherein two print plates are disposed at a spaced relation.
Claim 15
Dependent Claim
28 words
A page printer as claimed in claim 13, wherein the divisional spacing of said heating elements corresponds to double the dot-matrix spacing of said electronic dot-matrix printing mechanism.
Claim 16
Dependent Claim
23 words
A page printer as claimed in claim 14, wherein the length of said heating elements is somewhat greater than the spacing between them.
Claim 17
Dependent Claim
26 words
A page printer as claimed in 15, wherein said heating elements of said two carrier plates are staggered in relation to one another by a division.
Claim 18
Dependent Claim
41 words
A page printer as claimed in claim 1, wherein there are two lateral faces, and said heating elements are disposed flush with the front surface of said carrier plate, and are disposed on both said lateral faces of said carrier plate.
Claim 19
Dependent Claim
22 words
A page printer as claimed in claim 17, wherein the divisional spacing of said heating elements corresponds to double the dot-matrix spacing.
Claim 20
Dependent Claim
22 words
A page printer as claimed in claim 18, wherein the length of said heating elements is greater than the spacing between them.
Claim 21
Dependent Claim
26 words
A page printer as claimed in claim 19, wherein said heating elements on both lateral faces are staggered in relation to one another by a division.
Claim 22
Dependent Claim
40 words
A page printer as claimed in claim 1, wherein a continuous heating resistance path is provided which is connected to said conducting paths, and wherein said conducting paths having a width corresponding to a length of a respective heating area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |