US4492484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved ribbon mask and guide for wire dot printers
Assignee: OKAYA KOGYO A Co OF JAPAN KK
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Filing: 1982-08-13
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Granted: 1985-01-08
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Expires: 2002-08-13
Abstract
Abstract A printing device for use in a wire dot printer having a plurality of printing wires. The printing device includes a frame and a carriage slidably supported on the frame for lateral translation thereacross. A printing head is supported on the carriage and includes a nose member which supports the plurality of printing wires. First and second holding members are disposed on the carriage so that the nose member is intermediate the first and second holding members. A ribbon mask constructed from an elastic material is disposed on the nose member. The ribbon mask is removably held between the first and second holding members and extends across the nose member.
Inventors
- 👤 Hiroyuki Akazawa
- 👤 Kazue Yoshiie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:58
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/12; B41J35/00; B41J35/04; B41J35/06; B41J35/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
196 words
A printing device for use in a wire dot printer having a plurality of printing wires, comprising a frame, a carriage means slidably supported on said frame for lateral translation thereacross, printing head means supported on said carriage means having a nose member for holding said plurality of wires, first and second holding means disposed on said carriage means so that said nose member is intermediate said first and second holding means, a ribbon mask constructed from an elastic material and disposed on said nose member, said ribbon mask being removably held between said first and second holding means so as to extend across said nose member, said printing head means including a nose guide coupled to said nose member, and an ink ribbon having upper and lower edges disposed intermediate said nose guide and said ribbon mask, said nose guide having first and second projections disposed proximate said upper and lower edges of said ink ribbon respectively to limit longitudinal movement of said ink ribbon therebetween, said first and second holding means being pin-shaped and being disposed on opposite sides of said nose member, said first and second holding means each including spaced step portions.
Claim 2
Dependent Claim
196 words
A printing device for use in a wire dot printer having a plurality of printing wires, comprising a frame, a carriage means slidably supported on said frame for lateral translation thereacross, printing head means supported on said carriage means having a nose member for holding said plurality of wires, first and second holding means disposed on said carriage means so that said nose member is intermediate said first and second holding means, a ribbon mask constructed from an elastic material and disposed on said nose member, said ribbon mask being removably held between said first and second holding means so as to extend across said nose member, said printing head means including a nose guide coupled to said nose member, and an ink ribbon having upper and lower edges disposed intermediate said nose guide and said ribbon mask, said nose guide having first and second projections disposed proximate said upper and lower edges of said ink ribbon respectively to limit longitudinal movement of said ink ribbon therebetween, said first and second holding means being pin-shaped and being disposed on opposite sides of said nose member, said first and second holding means each including spaced step portions.
Claim 3
Dependent Claim
22 words
The printing device as claimed in claim 1, wherein said ribbon mask has an opening through which said printing wires can extend.
Claim 4
Dependent Claim
37 words
The printing device as claimed in claim 1, wherein said ribbon mask includes first and second ends, said first and second ends being captured between the respective step portions of said first and second holding means, respectively.
Claim 5
Dependent Claim
205 words
A printing device for use in a wire dot printer having a plurality of printing wires, comprising a frame, a carriage means slidably supported on said frame for lateral translation thereacross, printing head means supported on said carriage means having a nose member for holding said plurality of wires, first and second holding means disposed on said carriage means so that said nose member is intermediate said first and second holding means, a ribbon mask constructed from an elastic material and disposed on said nose member, said ribbon mask being removably held between said first and second holding means so as to extend across said nose member, said printing head means including a nose guide coupled to said nose member, and an ink ribbon having upper and lower edges disposed intermediate said nose guide and said ribbon mask, said nose guide having first and second projections disposed proximate said upper and lower edges of said ink ribbon respectively to limit longitudinal movement of said ink ribbon therebetween, said ribbon mask including an opening through which said printing wires can extend, said ribbon mask including at least one slot for setting the tension in said ribbon mask when disposed between said first and second holding means.
Claim 6
Dependent Claim
205 words
A printing device for use in a wire dot printer having a plurality of printing wires, comprising a frame, a carriage means slidably supported on said frame for lateral translation thereacross, printing head means supported on said carriage means having a nose member for holding said plurality of wires, first and second holding means disposed on said carriage means so that said nose member is intermediate said first and second holding means, a ribbon mask constructed from an elastic material and disposed on said nose member, said ribbon mask being removably held between said first and second holding means so as to extend across said nose member, said printing head means including a nose guide coupled to said nose member, and an ink ribbon having upper and lower edges disposed intermediate said nose guide and said ribbon mask, said nose guide having first and second projections disposed proximate said upper and lower edges of said ink ribbon respectively to limit longitudinal movement of said ink ribbon therebetween, said ribbon mask including an opening through which said printing wires can extend, said ribbon mask including at least one slot for setting the tension in said ribbon mask when disposed between said first and second holding means.
Claim 7
Dependent Claim
27 words
The printing device as claimed in claim 4, wherein said first and second holding means are pin-shaped and are disposed on opposite sides of said nose member.
Claim 8
Dependent Claim
35 words
The printing device as claimed in claim 1 or 4, wherein said wire dot printer includes a platen disposed on said frame, said nose member keeping said plurality of printing wires aligned opposite said platen.
Claim 9
Dependent Claim
23 words
The printing device as claimed in claim 1 or 4, wherein said projections are slightly higher than the thickness of said ink ribbon.
Claim 10
Dependent Claim
25 words
The printing device as claimed in claim 7, wherein said nose guide includes an upper portion, said upper portion arching away from said ribbon mask.
Claim 11
Dependent Claim
37 words
The printing device as claimed in claim 2, wherein said ribbon mask is urged against said first and second projections when held between said first and second holding means due to the elasticity of said ribbon mask.
Claim 12
Dependent Claim
37 words
The printing device as claimed in claim 7, wherein said ribbon mask is urged against said first and second projections when held between said first and second holding means due to the elasticity of said ribbon mask.
Claim 13
Dependent Claim
32 words
The printing device as claimed in claim 6, wherein said nose member has an upper portion, said upper portion being arched away from said ribbon mask and toward said printing head means.
Claim 14
Dependent Claim
35 words
The printing device as claimed in claim 11, wherein said ribbon mask includes first and second hook-shaped ends, said first and second hook shaped ends being held by said first and second holding means, respectively.
Claim 15
Dependent Claim
28 words
The printing device as claimed in claim 6, wherein said ribbon mask includes upper and lower portions, said upper portion of said ribbon mask being bent towards platen.
Claim 16
Dependent Claim
23 words
The printing device as claimed in claim 13, wherein said lower portion of said ribbon mask is bent towards said printing head means.
Claim 17
Dependent Claim
37 words
The printing device as claimed in claims 1 or 4, wherein said ribbon mask includes first and second hook-shaped ends, said first and second hook shaped ends being held by said first and second holding means, respectively.
Claim 18
Dependent Claim
21 words
The printing device as claimed in claims 1 or 4, wherein said ribbon mask is constructed from a stainless steel sheet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |