Patent US4451562B1 successfully refreshed from Google Patents.
US3964592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing mechanism for printing characters
Assignee: Casio Computer Co Ltd
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Filing: 1975-10-20
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Granted: 1976-06-22
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Expires: 1995-10-20
Abstract
Abstract A printing mechanism for printing characters comprises a rotatable hammer confronting through a recording paper the surface of a character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface; a striking mechanism adapted to be driven upon the supply of a printing instruction signal so as to cause the peripheral surface of the rotatable hammer to strike through the recording paper the character pattern located in a printing position; a mechanism for causing the rotatable hammer to be rotated through a predetermined angle in response to the striking movement of the rotatable hammer; and a mechanism for supplying a colored printing material to the peripheral surface of the rotatable hammer for either within or without the rotatable hammer.
Inventors
- 👤 Toshio Kashio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/04; B41J27/00; B41J27/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
352 words
A printing mechanism for printing characters responsive to a printing signal, comprising: a cylindrical character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface and adapted to be rotated so that a character pattern to be printed is located in a printing position; a rotatable hammer driven so as to confront the character pattern to be printed through a recording paper and urged to strike the character pattern through the recording paper to print the character on the recording paper in a colored printing material supplied to the peripheral surface of the hammer; a driving mechanism for driving the rotatable hammer which comprises a fixed first shaft parallel to the cylinder axis of said cylindrical pattern bearing body, a slide member slideably mounted to the first shaft and slideable along the first shaft, a rotatable second shaft parallel to the cylinder axis of said cylindrical pattern bearing body and which is rotated responsive to a printing signal and which supports the slide member to allow the slide member to move along the second shaft, a hammer lever coupled to the sliding member and slideably movable along the second shaft together with the sliding member and coupled to the second shaft so as to rotate along with the second shaft, said rotatable hammer being rotatably supported at the free end of the hammer lever, a toothed ratchet rotated with the rotation of the rotatable hammer, an anchoring lever one end of which is pivotally supported at the sliding member and the other end of which is engaged with a tooth of the ratchet to rotate the rotatable hammer by a predetermined rotation angle for each character printing, and an elastic member one end of which is pivotally supported on the hammer lever and the other end of which is engaged with a tooth of the ratchet to prevent reverse rotation of the rotatable hammer; and a mechanism adapted to be contacted with the peripheral surface of the rotatable hammer so as to supply the colored printing material to the peripheral surface of the rotatable hammer.
Claim 2
Dependent Claim
352 words
A printing mechanism for printing characters responsive to a printing signal, comprising: a cylindrical character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface and adapted to be rotated so that a character pattern to be printed is located in a printing position; a rotatable hammer driven so as to confront the character pattern to be printed through a recording paper and urged to strike the character pattern through the recording paper to print the character on the recording paper in a colored printing material supplied to the peripheral surface of the hammer; a driving mechanism for driving the rotatable hammer which comprises a fixed first shaft parallel to the cylinder axis of said cylindrical pattern bearing body, a slide member slideably mounted to the first shaft and slideable along the first shaft, a rotatable second shaft parallel to the cylinder axis of said cylindrical pattern bearing body and which is rotated responsive to a printing signal and which supports the slide member to allow the slide member to move along the second shaft, a hammer lever coupled to the sliding member and slideably movable along the second shaft together with the sliding member and coupled to the second shaft so as to rotate along with the second shaft, said rotatable hammer being rotatably supported at the free end of the hammer lever, a toothed ratchet rotated with the rotation of the rotatable hammer, an anchoring lever one end of which is pivotally supported at the sliding member and the other end of which is engaged with a tooth of the ratchet to rotate the rotatable hammer by a predetermined rotation angle for each character printing, and an elastic member one end of which is pivotally supported on the hammer lever and the other end of which is engaged with a tooth of the ratchet to prevent reverse rotation of the rotatable hammer; and a mechanism adapted to be contacted with the peripheral surface of the rotatable hammer so as to supply the colored printing material to the peripheral surface of the rotatable hammer.
Claim 3
Dependent Claim
332 words
A printing mechanism for printing characters responsive to a printing signal, comprising: a cylindrical character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface and adapted to be rotated so that a character pattern to be printed is located in a printing position; a rotatable hammer, made of a solidified body impregnated with colored printing material, driven so as to confront the character pattern to be printed through a recording paper and urged to strike the character pattern through the recording paper to print the character on the recording paper in the colored printing material oozed out therefrom on the impacted surface thereof; and a driving mechanism for driving the rotatable hammer which comprises a fixed first shaft parallel to the cylinder axis of said cylindrical pattern bearing body, a slide member slideably mounted to the first shaft and slideable along the first shaft, a rotatable second shaft parallel to the cylinder axis of said cylindrical pattern bearing body and which is rotated responsive to a printing signal and which supports the slide member to allow the slide member to move along the second shaft, a hammer lever coupled to the sliding member and slideably movable along the second shaft together with the slide member and coupled to the second shaft so as to rotate along with the second shaft, said rotatable hammer being rotatably supported at the free end of the hammer lever, a toothed ratchet rotated with the rotation of the rotatable hammer, an anchoring lever one end of which is pivotally supported at the sliding member and the other end of which is engaged with a tooth of the ratchet to rotate the rotatable hammer by a predetermined rotation angle for each character printing, and an elastic member one end of which is pivotally supported on the hammer lever and the other end of which is engaged with a tooth of the ratchet to prevent reverse rotation of the rotatable hammer.
Claim 4
Dependent Claim
332 words
A printing mechanism for printing characters responsive to a printing signal, comprising: a cylindrical character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface and adapted to be rotated so that a character pattern to be printed is located in a printing position; a rotatable hammer, made of a solidified body impregnated with colored printing material, driven so as to confront the character pattern to be printed through a recording paper and urged to strike the character pattern through the recording paper to print the character on the recording paper in the colored printing material oozed out therefrom on the impacted surface thereof; and a driving mechanism for driving the rotatable hammer which comprises a fixed first shaft parallel to the cylinder axis of said cylindrical pattern bearing body, a slide member slideably mounted to the first shaft and slideable along the first shaft, a rotatable second shaft parallel to the cylinder axis of said cylindrical pattern bearing body and which is rotated responsive to a printing signal and which supports the slide member to allow the slide member to move along the second shaft, a hammer lever coupled to the sliding member and slideably movable along the second shaft together with the slide member and coupled to the second shaft so as to rotate along with the second shaft, said rotatable hammer being rotatably supported at the free end of the hammer lever, a toothed ratchet rotated with the rotation of the rotatable hammer, an anchoring lever one end of which is pivotally supported at the sliding member and the other end of which is engaged with a tooth of the ratchet to rotate the rotatable hammer by a predetermined rotation angle for each character printing, and an elastic member one end of which is pivotally supported on the hammer lever and the other end of which is engaged with a tooth of the ratchet to prevent reverse rotation of the rotatable hammer.
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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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |