← Back to Patent Explorer
US4029193A Expired / Lapsed US ⏱️ 0.0 years remaining

Printer having a platen with resilient segments

Assignee: Bunker Ramo Corp
•
Filing: 1975-03-31
•
Granted: 1977-06-14
•
Expires: 1995-03-31
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A bound booklet is opened and inserted into a guide. A platen, having individual spring biased segments, is positioned against the booklet covers while printing means move horizontally across the open pages of the booklet. A first platen segment contacts the front cover of the open booklet, while a second segment contacts the back cover. An intermediate shortened segment yields to the binding edge of the booklet. Thus, the varying thickness of the booklet is compensated for and a flat printing plane is presented to the printing means. A single leaf document may be accommodated, instead of a booklet. In the case of a single leaf, the resilient nature of the platen compensates for single leaf documents of different thickness, within a permissible range.

Inventors

  • 👤 Okun Kwan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 20:35
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/28; B41J3/283; B41J11/00; B41J11/20

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 176 words
A printer platen for alternatively providing a printer support surface for single sheets, multiple sheets or documents of varying thickness, comprising: an elongated support means for mounting other platen components thereto; first and second document contacting members overlying the support means and normally positioned in aligned spaced relation to each other; a third document contacting member overlying the support means normally positioned in intermediate aligned abutting relationship with the first and second document carrying members; a plurality of spring means, each connected between the support means and a respective document contacting member; means connected between the support means and the document contacting members for normally maintaining a continuous surface between all of the members; wherein the continuous surface is planar for a document of uniform thickness and further wherein the third member may yield relative to the first and second members for supporting the bulge of a document centerfold while first and second flat portions of a document are supported by the first and second members, in a manner permitting continuous line printing across the centerfold.
Claim 2
Dependent Claim 176 words
A printer platen for alternatively providing a printer support surface for single sheets, multiple sheets or documents of varying thickness, comprising: an elongated support means for mounting other platen components thereto; first and second document contacting members overlying the support means and normally positioned in aligned spaced relation to each other; a third document contacting member overlying the support means normally positioned in intermediate aligned abutting relationship with the first and second document carrying members; a plurality of spring means, each connected between the support means and a respective document contacting member; means connected between the support means and the document contacting members for normally maintaining a continuous surface between all of the members; wherein the continuous surface is planar for a document of uniform thickness and further wherein the third member may yield relative to the first and second members for supporting the bulge of a document centerfold while first and second flat portions of a document are supported by the first and second members, in a manner permitting continuous line printing across the centerfold.
Claim 3
Dependent Claim 200 words
A printer platen comprising: a. an elongated support means for mounting other platen components thereto; b. a plurality of document contacting members resiliently mounted to the support means, each document contacting member having a generally channel shape positioned over the support means, the channel-shaped members being normally disposed in aligned abutting relationship with each other, the channel-shaped members including first and second members of substantially identical length and a third intermediately positioned foreshortened member; c. a plurality of resilient means mounted at a first end thereof to the support means, an opposite end of the resilient means respectively biasing each document contacting member; and d. fastener means connecting the document contacting members to the support means for maintaining the platen in an assembled condition, the fastener means normally maintaining a continuous surface between all of the members; e. wherein the continuous surface is planar for a document of uniform thickness and further wherein the third member may yield relative to the first and second members for supporting the bulge of a document centerfold while first and second flat portions of a document are supported by the first and second members, in a manner permitting continuous line printing across the centerfold.
Claim 4
Dependent Claim 200 words
A printer platen comprising: a. an elongated support means for mounting other platen components thereto; b. a plurality of document contacting members resiliently mounted to the support means, each document contacting member having a generally channel shape positioned over the support means, the channel-shaped members being normally disposed in aligned abutting relationship with each other, the channel-shaped members including first and second members of substantially identical length and a third intermediately positioned foreshortened member; c. a plurality of resilient means mounted at a first end thereof to the support means, an opposite end of the resilient means respectively biasing each document contacting member; and d. fastener means connecting the document contacting members to the support means for maintaining the platen in an assembled condition, the fastener means normally maintaining a continuous surface between all of the members; e. wherein the continuous surface is planar for a document of uniform thickness and further wherein the third member may yield relative to the first and second members for supporting the bulge of a document centerfold while first and second flat portions of a document are supported by the first and second members, in a manner permitting continuous line printing across the centerfold.

References Cited (Backward Citations)

US2149478A Cited
US3228326A Cited
GB1224696A Cited
US3780669A Cited
US3912068A Cited
US3904010A Cited
US3838640A Cited
US3776341A Cited
US3837461A Cited
US3838641A Cited
US3868008A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-06-13 1980-12-13 1981-06-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-06-13 1984-12-13 1985-06-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-06-13 1988-12-13 1989-06-14 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag