US4716481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and/or reproducing apparatus having an imposed head shifting feature
Assignee: Canon Inc
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Filing: 1986-08-21
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Granted: 1987-12-29
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Expires: 2006-08-21
Abstract
Abstract A recording or reproducing apparatus having a recording or reproducing head, a spring member, a reset member for charging the spring member, a carriage member for moving the recording or reproducing head by the driving force of the spring member and a control mechanism for positioning the recording or reproducing head relative to a recording medium in cooperation with the carriage member.
Inventors
- 👤 Nobuo Tezuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B21/00; G11B21/02; G11B21/08; G11B23/00; G11B23/02; G11B23/03; G11B23/0301; G11B23/0302
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
A recording and/or reproducing apparatus comprising: (A) a head for signal recording and/or reproducing against a recording medium in a predetermined loaded position; (B) a movable carriage member for carrying said head along a surface of said medium between a first and a second position; (C) a spring member for urging said carriage member in a direction from said first to said second position along said surface of said medium; (D) control means including a cam member for controlling the movement of said carriage member in said direction by an urging force of said spring member; (E) reset means for shifting said carriage member to said first position and for charging said spring member; and (F) eject means responsive to said shifting operation of said reset means for ejecting said medium from said loaded position.
Claim 2
Dependent Claim
135 words
A recording and/or reproducing apparatus comprising: (A) a head for signal recording and/or reproducing against a recording medium in a predetermined loaded position; (B) a movable carriage member for carrying said head along a surface of said medium between a first and a second position; (C) a spring member for urging said carriage member in a direction from said first to said second position along said surface of said medium; (D) control means including a cam member for controlling the movement of said carriage member in said direction by an urging force of said spring member; (E) reset means for shifting said carriage member to said first position and for charging said spring member; and (F) eject means responsive to said shifting operation of said reset means for ejecting said medium from said loaded position.
Claim 3
Dependent Claim
16 words
The apparatus according to claim 1, wherein said cam member is arranged to be linearly movable.
Claim 4
Dependent Claim
15 words
The apparatus according to claim 1, wherein said cam member is arranged to be rotatable.
Claim 5
Dependent Claim
30 words
The apparatus according to claim 1, wherein said recording medium is of a rotary type, wherein said apparatus further comprises rotation means for rotating the medium relative to said head.
Claim 6
Dependent Claim
28 words
The apparatus according to claim 4, wherein said recording medium is disc-shaped and said rotation means includes a rotation spindle engageable with the medium to rotate the same.
Claim 7
Dependent Claim
180 words
A recording and/or reproducing apparatus comprising: (A) a head for signal recording and/or reproducing against a recording medium in a predetermined loaded position; (B) a movable carriage member for carrying said head along a surface of said medium between a first and a second position and having a cam follower; (C) guide means for linearly guiding said carriage member along a direction from said first to said second position; (D) a spring member for urging said carriage member in a direction from said first to said second position along said surface of said medium; (E) a cam member engageable with the cam follower of said carriage member to control the movement thereof; and (F) drive means for driving said cam member so that said carriage member is allowed to move in said direction by an urging force of said spring member; (G) reset means for shifting said carriage member to said first position and for charging said spring member; and (H) eject means responsive to said shifting operation of said reset means for ejecting said medium from said loaded position.
Claim 8
Dependent Claim
180 words
A recording and/or reproducing apparatus comprising: (A) a head for signal recording and/or reproducing against a recording medium in a predetermined loaded position; (B) a movable carriage member for carrying said head along a surface of said medium between a first and a second position and having a cam follower; (C) guide means for linearly guiding said carriage member along a direction from said first to said second position; (D) a spring member for urging said carriage member in a direction from said first to said second position along said surface of said medium; (E) a cam member engageable with the cam follower of said carriage member to control the movement thereof; and (F) drive means for driving said cam member so that said carriage member is allowed to move in said direction by an urging force of said spring member; (G) reset means for shifting said carriage member to said first position and for charging said spring member; and (H) eject means responsive to said shifting operation of said reset means for ejecting said medium from said loaded position.
Claim 9
Dependent Claim
16 words
The apparatus according to claim 6, wherein said cam member is arranged to be linearly movable.
Claim 10
Dependent Claim
15 words
The apparatus according to claim 6, wherein said cam member is arranged to be rotatable.
Claim 11
Dependent Claim
31 words
The apparatus according to claim 6, wherein said recording medium is of a rotary type and wherein said apparatus further comprises rotation means for rotating the medium relative to said head.
Claim 12
Dependent Claim
28 words
The apparatus according to claim 9, wherein said recording medium is disc-shaped and said rotation means includes a rotation spindle engageable with the medium to rotate the same.
References Cited (Backward Citations)
US3154308A
Cited
US3159040A
Cited
US4466032A
Cited
US4467380A
Cited
US4511944A
Cited
GB2101391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |