EP0342619A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Magnetic recording and reproducing apparatus
Assignee: Panasonic Holdings Corp
•
Filing: 1989-05-17
•
Granted: —
•
Expires: 2009-05-17
Abstract
Abstract A magnetic recording and reproducing apparatus (K1) including a cassette discriminating device (26a, 26b) for discriminating a large cassette (48) having first supply and take-up reels and a small cassette (25) having second supply and take-up reels, a first reel base (28) engageable with the first and second supply reels, a second reel base (29) engageable with the first take-up reel, a third reel base (30) engageable with the second take-up reel (97), which is lifted and lowered vertically, a first cassette loading device (22, 40-43, 34, 31a) for loading the large cassette (48) onto the first and second reel bases (28, 29) so as to hold the third reel base (30) at a lowered position before completion of loading of the large cassette (48), a second cassette loading device (22, 41-43, 34, 31a) for loading the small cassette (25) onto the first and third reel bases (28, 30) so as to hold the third reel base (30) at a lifted position before completion of loading of the small cassette (25) and a rotational power transmission device (36, 29a, 30a) for transmitting a rotational force to the third reel base (30) when the third reel base (30) is held at the lifted position.
Inventors
- 👤 Chikanori Miyawaki
- 👤 Akihiko Yamamura
- 👤 Hideki Sakumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:30
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/665; G11B15/02; G11B15/16; G11B15/17; G11B15/18; G11B15/26; G11B15/32; G11B15/675; G11B15/67544; G11B15/67547; G11B25/00; G11B25/06; G11B25/066
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
287 words
A magnetic recording and reproducing apparatus comprising: a cassette discriminating means for discriminating a large cassette and a small cassette having an external size smaller than that of said large cassette; said large cassette incorporating a first supply reel and a first take-up reel spaced a first distance from each other; said small cassette incorporating a second supply reel and a second take-up reel spaced a second distance from each other such that the second distance is smaller than the first distance; a first reel base which is engageable with said first supply reel of said large cassette and said second supply reel of said small cassette; a second reel base which is engageable with said first take-up reel of said large cassette; a third reel base which is disposed between said first reel base and said second reel base so as to be engaged with said second take-up reel of said small cassette and is lifted and lowered between a lifted position and a lowered position vertically relative to an apparatus housing of said magnetic recording and reproducing apparatus; a first cassette loading means for loading said large cassette onto said first reel base and said second reel base such that said third reel base is held at the lowered position before completion of loading of said large cassette; a second cassette loading means for loading said small cassette onto said first reel base and said third reel base such that said third reel base is held at the lifted position before completion of loading of said small cassette; and a rotational power transmission means for transmitting a rotational force to said third reel base when said third reel base is held at the lifted position.
Claim 2
Dependent Claim
287 words
A magnetic recording and reproducing apparatus comprising: a cassette discriminating means for discriminating a large cassette and a small cassette having an external size smaller than that of said large cassette; said large cassette incorporating a first supply reel and a first take-up reel spaced a first distance from each other; said small cassette incorporating a second supply reel and a second take-up reel spaced a second distance from each other such that the second distance is smaller than the first distance; a first reel base which is engageable with said first supply reel of said large cassette and said second supply reel of said small cassette; a second reel base which is engageable with said first take-up reel of said large cassette; a third reel base which is disposed between said first reel base and said second reel base so as to be engaged with said second take-up reel of said small cassette and is lifted and lowered between a lifted position and a lowered position vertically relative to an apparatus housing of said magnetic recording and reproducing apparatus; a first cassette loading means for loading said large cassette onto said first reel base and said second reel base such that said third reel base is held at the lowered position before completion of loading of said large cassette; a second cassette loading means for loading said small cassette onto said first reel base and said third reel base such that said third reel base is held at the lifted position before completion of loading of said small cassette; and a rotational power transmission means for transmitting a rotational force to said third reel base when said third reel base is held at the lifted position.
Claim 3
Dependent Claim
24 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein a motor is employed for lifting and lowering said third reel base.
Claim 4
Dependent Claim
25 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein an electromagnetic solenoid is employed for lifting and lowering said third reel base.
Claim 5
Dependent Claim
24 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein a cam is employed for lifting and lowering said third reel base.
Claim 6
Dependent Claim
35 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein a link engageable with said third reel base is employed for lifting and lowering said third reel base through rotation of said link.
Claim 7
Dependent Claim
70 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein a spring disposed below said third reel base is employed for lifting and lowering said third reel base, said spring urging said third reel base upwardly at all times; said third reel base, at the time of loading of said large cassette, being depressed downwardly by a lower face of said large cassette so as to be lowered.
Claim 8
Dependent Claim
78 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein a gear is formed around said third reel base so as to be engaged with a mating gear of said take-up reel of said small cassette, said gear, when said third reel base is held at the lifted position, being engaged with said mating gear of said second take-up reel of said small cassette so as to drive said second take-up reel of said small cassette.
Claim 9
Dependent Claim
30 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein said rotational power transmission means includes a motor coupled with a rotational shaft of said third reel base.
Claim 10
Dependent Claim
107 words
A magnetic recording and reproducing apparatus as claimed in Claim 1, wherein said rotational power transmission means includes a gear formed around said second reel base and a further gear formed around said third reel base such that said further gear is engageable with said gear, said further gear having a tooth thickness larger than a vertical stroke of said third reel base so as to be engaged with said gear at all times regardless of whether said third reel base is disposed at the lifted position or the lowered position such that the rotational force is transmitted to the third reel base by rotating said gear.
Claim 11
Dependent Claim
159 words
A magnetic recording and reproducing apparatus comprising: a drive gear; a reel base which is engageable with a take-up reel for taking up a magnetic tape accommodated in a cassette and is formed with a first gear; a second gear which is engageable with said drive gear and said first gear so as to be engaged with said drive gear earlier than said first gear; an urging means for urging said second gear to a position where said second gear is engageable with said drive gear and said first gear; a displacement means for displacing said second gear to a position where said second gear is disengaged from said drive gear and said first gear; a detection means for detecting that said cassette has been loaded at a predetermined position; and a rotary means for rotating said drive gear through a necessary amount upon detection of said detection means that said cassette has been loaded at the predetermined position.
Claim 12
Dependent Claim
159 words
A magnetic recording and reproducing apparatus comprising: a drive gear; a reel base which is engageable with a take-up reel for taking up a magnetic tape accommodated in a cassette and is formed with a first gear; a second gear which is engageable with said drive gear and said first gear so as to be engaged with said drive gear earlier than said first gear; an urging means for urging said second gear to a position where said second gear is engageable with said drive gear and said first gear; a displacement means for displacing said second gear to a position where said second gear is disengaged from said drive gear and said first gear; a detection means for detecting that said cassette has been loaded at a predetermined position; and a rotary means for rotating said drive gear through a necessary amount upon detection of said detection means that said cassette has been loaded at the predetermined position.
Claim 13
Dependent Claim
159 words
A magnetic recording and reproducing apparatus comprising: a drive gear; a reel base which is engageable with a take-up reel for taking up a magnetic tape accommodated in a cassette and is formed with a first gear; a second gear which is engageable with said drive gear and said first gear so as to be engaged with said first gear earlier than said drive gear; an urging means for urging said second gear to a position where said second gear is engageable with said drive gear and said first gear; a displacement means for displacing said second gear to a position where said second gear is disengaged from said drive gear and said first gear; a detection means for detecting that said cassette has been loaded at a predetermined position; and a rotary means for rotating said reel base through a necessary amount upon detection of said detection means that said cassette has been loaded at the predetermined position.
Claim 14
Dependent Claim
159 words
A magnetic recording and reproducing apparatus comprising: a drive gear; a reel base which is engageable with a take-up reel for taking up a magnetic tape accommodated in a cassette and is formed with a first gear; a second gear which is engageable with said drive gear and said first gear so as to be engaged with said first gear earlier than said drive gear; an urging means for urging said second gear to a position where said second gear is engageable with said drive gear and said first gear; a displacement means for displacing said second gear to a position where said second gear is disengaged from said drive gear and said first gear; a detection means for detecting that said cassette has been loaded at a predetermined position; and a rotary means for rotating said reel base through a necessary amount upon detection of said detection means that said cassette has been loaded at the predetermined position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.