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EP0058902A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Antinoise device for impact serial printer

Assignee: Bull HN Information Systems Italia SpA
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Filing: 1982-02-13
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Granted: —
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Expires: 2002-02-13
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Abstract

Abstract In a serial printer, 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 generated by the printing support vibrations during the printing. Preferably the leaf is provided with a window (45) inside which the impression is performed in order to press the printing support against the platen all around the zone where the printing is performed. As the leaf is transparent, it does not preclude the visibility of what is printed. Beside as the leaf is mounted on the carriage, when the carriage is in its travel end positions, the leaf does not interfere with the loading of the printing support in the printer.

Inventors

  • 👤 Marcello Speraggi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 05:41
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/10

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 96 words
Antinoise device for serial printers of the type where a printing head is mounted on a printing carriage sliding along a printing line and the printing is made by the action of such printing head against a platen, a printing support being interposed between printing head and platen, characterized by that it comprises a transparent elastic leaf fixed to such carriage and elastically bending against such platen near the zone where said printing head impact 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 96 words
Antinoise device for serial printers of the type where a printing head is mounted on a printing carriage sliding along a printing line and the printing is made by the action of such printing head against a platen, a printing support being interposed between printing head and platen, characterized by that it comprises a transparent elastic leaf fixed to such carriage and elastically bending against such platen near the zone where said printing head impact 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
Antinoise device as claimed in claim 1, where said leaf is provided with an opening inside which said printing head performs the impression.
Claim 4
Dependent Claim 24 words
Antinoise device as claimed in claim 2 where said leaf has substantially a rectangular shape the two upper angles of said leaf being bevelled.
Claim 5
Dependent Claim 20 words
Antinoise device as claimed in claim 2 where said leaf is provided with two appendixes which extend inside said opening.
Claim 6
Dependent Claim 19 words
Antinoise device as claimed in claim 4 where said appendixes inside said opening are provided with a rounded end.

References Cited (Backward Citations)

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