US4127334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dot printer
Assignee: Oki Electric Industry Co Ltd
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Filing: 1976-10-18
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Granted: 1978-11-28
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Expires: 1996-10-18
Abstract
Abstract A new and novel dot printer for printing characters of dot matrix or the like by sliding a slide member in the direction of a row, said slide member being provided with a plurality of dot printing elements which are arranged in line thereon at a predetermined distance, wherein plate springs are provided on both ends of the slide member as a guide, support and return mechanism so that guide, support as well as return power are assured for said slide member.
Inventors
- 👤 Akinori Watanabe
- 👤 Masao Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:40
CPC Classifications
B; B41; B41J; B41J25/00; B41J25/001; B41J25/006; B41J2/00; B41J2/22; B41J2/23; B41J2/235; B41J2/245
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
165 words
A dot printer for printing characters using a slide member slideable along the direction of the row being printed, said slide member being provided with a plurality of dot printing elements each of which is located at a predetermined distance from an adjacent element, a pair of connecting members located at opposite ends of said slide member connecting said slide member to the frame of said dot printer, said pair of connecting members operating to guide and support said slide member and return said slide member after each printing operation, said connecting members connecting said slide member to said frame in one direction and comprising leaf spring means to displace said slide member in a direction orthogonal to said one direction, said orthogonal direction being parallel to the direction of movement of the printing elements when printing, such that said slide member moves in the direction of movement of the printing elements as said slide member moves along the direction of the row being printed.
Claim 2
Dependent Claim
165 words
A dot printer for printing characters using a slide member slideable along the direction of the row being printed, said slide member being provided with a plurality of dot printing elements each of which is located at a predetermined distance from an adjacent element, a pair of connecting members located at opposite ends of said slide member connecting said slide member to the frame of said dot printer, said pair of connecting members operating to guide and support said slide member and return said slide member after each printing operation, said connecting members connecting said slide member to said frame in one direction and comprising leaf spring means to displace said slide member in a direction orthogonal to said one direction, said orthogonal direction being parallel to the direction of movement of the printing elements when printing, such that said slide member moves in the direction of movement of the printing elements as said slide member moves along the direction of the row being printed.
Claim 3
Dependent Claim
46 words
A dot printer as set forth in claim 1, wherein each of said connecting members comprises an integral member being connected between said frame and slide member, said integral member being flexible to form said leaf spring means for effecting said guide, support and return actions.
Claim 4
Dependent Claim
62 words
A dot printer as set forth in claim 2, wherein each of said connecting members comprises a comb-like plate spring comprising first, second, and third teeth, each having free ends, said first and third teeth being connected at their free ends to said frame, each of said second teeth being connected at their free ends to opposite ends of said slide member.
Claim 5
Dependent Claim
23 words
A dot printer as set forth in claim 3, wherein each of said teeth is formed of a pair of spring plate members.
Claim 6
Dependent Claim
26 words
A dot printer as set forth in claim 1, comprising damping means connected to said slide member to damp the return movement of said slide member.
Claim 7
Dependent Claim
20 words
A dot printer as set forth in claim 5, wherein said damping means comprises a weight secured to said frame.
Claim 8
Dependent Claim
20 words
A dot printer as set forth in claim 6, comprising a plate spring member connecting said weight to said frame.
References Cited (Backward Citations)
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US3802544A
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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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |