EP0139508A2
Expired / Lapsed
EP
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Wire dot matrix printer head
Assignee: Seiko Epson Corp
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Filing: 1984-10-09
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Granted: —
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Expires: 2004-10-09
Abstract
Abstract A wire dot matrix printer head comprising a printing wire (11) a distal end portion of which is mounted in a wire guide hole or holes (13a) of a wire guide means (12,13); an ink tank (2); and ink supply means (60, 12d, A, B) for supplying the distal end portion of the printing wire (11) with ink from the ink tank (2) characterised in that the ink supply means (60), 12d, A, B) comprises ink absorbing means (60) disposed in the ink tank (2), and a portion (12d) of the wire guide means (12,13) which is arranged to receive ink from the ink absorbing means (60), the wire guide means (12, 13) having a capillary ink path (A,B) which communicates both with the said portion (12d) of the wire guide means (12,13) and with the distal end portion of the printing wire (11) so as to supply ink to the latter.
Inventors
- 👤 Takashi Suzuki
- 👤 Masanao Matsuzawa
- 👤 Yoshinori Miyazawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:20
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17513; B41J2/22; B41J2/23; B41J2/235; B41J2/25; B41J2/255; B41J2/305
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
151 words
A wire dot matrix printer head comprising a printing wire (11) a distal end portion of which is mounted in a wire guide hole or holes (13a) of a wire guide means (12,13); an ink tank (2); and ink supply means (60, 12d, A, B) for supplying the distal end portion of the printing wire (11) with ink from the ink tank (2) characterised in that the ink supply means (60,12d, A, B) comprises ink absorbing means (60) disposed in the ink tank (2), and a portion (12d) of the wire guide means (12,13) which is arranged to receive ink from the ink absorbing means (60), the wire guide means (12,13) having a capillary ink path (A, B) which communicates both with the said portion (12d) of the wire guide means (12,13) and with the distal end portion of the printing wire (11) so as to supply ink to the latter.
Claim 2
Dependent Claim
151 words
A wire dot matrix printer head comprising a printing wire (11) a distal end portion of which is mounted in a wire guide hole or holes (13a) of a wire guide means (12,13); an ink tank (2); and ink supply means (60, 12d, A, B) for supplying the distal end portion of the printing wire (11) with ink from the ink tank (2) characterised in that the ink supply means (60,12d, A, B) comprises ink absorbing means (60) disposed in the ink tank (2), and a portion (12d) of the wire guide means (12,13) which is arranged to receive ink from the ink absorbing means (60), the wire guide means (12,13) having a capillary ink path (A, B) which communicates both with the said portion (12d) of the wire guide means (12,13) and with the distal end portion of the printing wire (11) so as to supply ink to the latter.
Claim 3
Dependent Claim
37 words
A wire dot matrix printer head as claimed in claim 1 characterised in that the said portion (12d) of the wire guide means (12,13) is disposed in an ink supply port (41) of the ink tank (2).
Claim 4
Dependent Claim
30 words
A wire dot matrix printer head as claimed in claim 1 or 2 characterised in that the capillary ink path is constituted by at least one gap (A,B) or groove.
Claim 5
Dependent Claim
41 words
A wire dot matrix printer head as claimed in claim 3 characterised in that the wire guide means comprises a plurality of wire guide members (12,13) which are formed to provide the said at least one gap (A,B) or groove therebetween.
Claim 6
Dependent Claim
28 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that the said portion of the wire guide means comprises a porous member (12"e).
Claim 7
Dependent Claim
86 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that the ink absorbing means comprises first and second porous members (61, 62) which are in contact with each other so that ink may flow from one to the other, the first porous member (61) being disposed further from the said portion (12d) of the wire guide means (12,13) than the second porous member (62) and having pores therein whose average diameter is greater than those of the second porous member (61).
Claim 8
Dependent Claim
46 words
A wire dot matrix printer head as claimed in any of claims 1-5 characterised in that the ink absorbing means comprises a porous member (60") whose pores are progressively reduced in size in the direction towards the said portion (12d) of the wire guide means (12,13).
Claim 9
Dependent Claim
44 words
A wire dot matrix printer head as claimed in any of claims 1-5 or 7 characterised in that the ink absorbing means comprises a porous member (60") which is compressed in the vicinity of the said portion (12d) of the wire guide means (12,13).
Claim 10
Dependent Claim
50 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that the ink tank (2) is provided with internal projections (47,51) which engage the ink absorbing means (60) so that there is a space between the latter and the internal surface of the ink tank (2).
Claim 11
Dependent Claim
48 words
A wire dot matrix printer head as claimed in claim 2 or any claim dependent thereon characterised in that the bottom (40a) of the ink tank (2) has at least one slot (45a, 45b, 45c) in its internal surface (44) which communicates with the ink supply port (41).
Claim 12
Dependent Claim
42 words
A wire dot matrix printer head as claimed in claim 10 characterised in that the said portion (12d) of the wire guide means (12,13) has at least one groove (12b) therein which communicates with the said slot or slots (45a, 45b, 45c).
Claim 13
Dependent Claim
44 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that the distal end surface (13c) of the wire guide means (12,13) is provided with at least one groove (13b) which communicates with the wire guide hole or holes (13a).
Claim 14
Dependent Claim
76 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that the ink tank (2) is detachably mounted on a head body (1), the ink tank (2) having at least one projection (49) which is engageable in a guide slot (35) in the head body (1) for positioning the head body (1) and ink tank (2) relatively to each other when the ink tank (2) is mounted on the head body (1).
Claim 15
Dependent Claim
51 words
A wire dot matrix printer head as claimed in any preceding claim characterised in that there are a plurality of ink tanks (2,2a, 2b) for storing differently coloured inks, and a plurality of printing wires (11) which are respectively arranged to be supplied with ink from said tanks (2, 2a, 2b).
Claim 16
Dependent Claim
42 words
A wire dot matrix printer head as claimed in claim 14 characterised in that the printing wires (11) are inclined with respect to the direction in which in operation the printer head (1) moves over a sheet of material to be printed.
Claim 17
Dependent Claim
113 words
An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon, said ink-supplied wire dot matrix printer head comprising: a wire guide member having a wire guide hole for guiding the tip end of the wire; an ink tank containing an ink absorbing body therein and having an ink supply port in which a portion of said wire guide member is inserted; and said wire guide member having a capillary ink path communicating with a side of the wire and supplied with ink from said ink absorbing body.
Claim 18
Dependent Claim
113 words
An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon, said ink-supplied wire dot matrix printer head comprising: a wire guide member having a wire guide hole for guiding the tip end of the wire; an ink tank containing an ink absorbing body therein and having an ink supply port in which a portion of said wire guide member is inserted; and said wire guide member having a capillary ink path communicating with a side of the wire and supplied with ink from said ink absorbing body.
Claim 19
Dependent Claim
70 words
An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon, said ink-supplied wire dot matrix printer head comprising: a head body having therein a plurality of ink tanks for storing different inks and a plurality of wires for being supplied with the inks, respectively.
Claim 20
Dependent Claim
70 words
An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink dots thereon, said ink-supplied wire dot matrix printer head comprising: a head body having therein a plurality of ink tanks for storing different inks and a plurality of wires for being supplied with the inks, respectively.
References Cited (Backward Citations)
No citation records indexed.
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