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US4410291A Expired / Lapsed US ⏱️ 0.0 years remaining

Antinoise device for impact serial printers

Assignee: Bull HN Information Systems Italia SpA
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Filing: 1982-02-19
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Granted: 1983-10-18
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Expires: 2002-02-19
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Abstract

Abstract A serial printer is disclosed where the printing is performed by a printing head (22) mounted on a carriage (21) movable along the printing line, a transparent leaf (36) mounted on the carriage presses the printing support (25) (paper) against a platen (24) around the zone where the impression is performed thus considerably reducing the noise and vibration generated by the printing support vibrations during the printing. Preferably, the leaf is provided with a window (45) wherein the impression is performed in order to press the printing support against the platen all around the print zone. As the leaf is transparent, it does not preclude the visibility of what is printed. Besides, as the leaf is mounted on the carriage, when the carriage is in its travel position, the leaf does not interfere with the loading of the printing support in the printer.

Inventors

  • 👤 Marcello Speraggi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:24
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/10

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 140 words
An antinoise device for serial printers of the type having a printing head mounted on a printing carriage sliding along a printing line and wherein the printing is made by the action of such printing head against a platen, a printing support being interposed between printing head and platen, such antinoise device comprising: (a) a transparent elastic leaf provided with an opening through which said printing head performs an impression, said leaf further having a substantially rectangular shape with the two upper angles beveled, said leaf further being provided with two appendices which extend inside said opening, said leaf being fixed to said printing carriage and elastically bending against said platen near the zone where said printing head impacts the printing support, whereby said printing support is locally pressed against said platen by said leaf and its vibration is prevented.
Claim 2
Dependent Claim 140 words
An antinoise device for serial printers of the type having a printing head mounted on a printing carriage sliding along a printing line and wherein the printing is made by the action of such printing head against a platen, a printing support being interposed between printing head and platen, such antinoise device comprising: (a) a transparent elastic leaf provided with an opening through which said printing head performs an impression, said leaf further having a substantially rectangular shape with the two upper angles beveled, said leaf further being provided with two appendices which extend inside said opening, said leaf being fixed to said printing carriage and elastically bending against said platen near the zone where said printing head impacts the printing support, whereby said printing support is locally pressed against said platen by said leaf and its vibration is prevented.
Claim 3
Dependent Claim 23 words
An antinoise device as recited in claim 1 wherein said appendices inside the opening in said leaf is provided with a rounded end.

References Cited (Backward Citations)

US4061219A Cited
US3887055A Cited
US4165188A Cited
JPS55133982A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-10-17 1987-04-18 1987-10-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-10-17 1991-04-18 1991-10-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-10-17 1995-04-18 1995-10-18 $7700.00 Window Closed / Lapsed

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