EP0020169A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cooling system for a line printer
Assignee: NEC Corp
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Filing: 1980-06-02
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Granted: —
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Expires: 2000-06-02
Abstract
Abstract A line printer has a flexible character band (5) which carries type characters which are struck by individually actuatable hammers (19). A plurality of hammer actuators (8) for individually actuating the hammers (19) are cooled by air directed upon them from above by air moving means (9).
Inventors
- 👤 Ikuo Kumagai
- 👤 Yukiaki Koyanagi
- 👤 Hiroshi Hidaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/16; G06F1/20; B; B41; B41J; B41J29/00; B41J29/377
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A line printer having a plurality of individually actuatable hammers (19), for use in impacting a type character, and a plurality of hammer actuators (8) for individually actuating said hammers (19), characterised in that air moving means (9) is provided for directing air upon the said hammer actuators (8) from a level above that of the hammer actuators (8) for air-cooling the hammer actuators (8).
Claim 2
Dependent Claim
65 words
A line printer having a plurality of individually actuatable hammers (19), for use in impacting a type character, and a plurality of hammer actuators (8) for individually actuating said hammers (19), characterised in that air moving means (9) is provided for directing air upon the said hammer actuators (8) from a level above that of the hammer actuators (8) for air-cooling the hammer actuators (8).
Claim 3
Dependent Claim
56 words
A line printer as claimed in claim 1 including a flexible character band (5) for carrying a plurality of the type characters, characterised in that the air moving means (9) is a cross-flow fan whose longitudinal axis is substantially parallel to the longitudinal axis of the character band (5) in the region adjacent the hammers (19).
Claim 4
Dependent Claim
71 words
A line printer as claimed in claim 2 characterised in that there is provided a paper guide plate (16) having a plurality of holes (16a) therethrough, wherein the paper guide plate (16) is arranged to guide paper leaving the printer and incoming cooling air for the air moving means (9) passes through the holes (16a) in order to make easier the removal of the paper from the guide plate (16) 4
Claim 5
Dependent Claim
43 words
A line printer as claimed in any one of the preceding claims characterised in that muffler chambers (25a) and (25b) are provided in the inlet and outlet paths to and from the air moving means respectively in order to provide a soundproofing effect.
Claim 6
Dependent Claim
53 words
A line printer as claimed in any one of the preceding claims characterised in that there is provided a sound arrester (31) on which the printer is mounted, the sound arrester (31) incorporating a second air moving means (33) arranged to vent heated air from a lower opening of the sound arrester (31).
References Cited (Backward Citations)
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