JPS6132270A - Recording device - Google Patents

Abstract

PURPOSE:To set securely a recording head at a position for recording by holding a power circuit on through a detecting means until the recording head reaches the recording position in response to the power-on operation of the power circuit which is operated associatively with the loading of a record carrier holder. CONSTITUTION:When a disk cassette is loaded, a cassette sensing switch 95, detection switch 96 for external cover closure, and detection switch 97 for external cover locking are turned on sequence associatively with the closure of an external cover. If the key groove 4b of a counter 4 is out of phase with the key 8a of a driving shaft 8 and a counter key-in detection switch 77 is off, the output of the AND gate 862 in an initializing circuit 86 goes up to a high level and a switching circuit 80 is held on; even if the detection switch 96 for external cover closure is turned off, the power circuit is held on. Further, a motor 84 is operated to move the disk 5 from the outer peripheral side of the inner peripheral side of the disk 2.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a recording device, particularly a recording device having a movable indicating member for holding a record carrier, holding a record carrier, and indicating a recording position on the record carrier. The present invention relates to a recording device that uses a carrier holder.

[Background technology]

In the still image recording and reproducing system called the "video floppy system" that has been proposed recently, it is proposed to use a flexible magnetic disk housed in a cassette, which is the holder, as the record carrier. has been, and
Furthermore, it has been proposed that the cassette be provided with a movable indicating member called a counter for indicating the recording position on the disk.

Therefore, in a still image recording apparatus that uses such a disk/cassette, the cassette side is A configuration to drive the counter is required.

In addition, in order to avoid double recording on a disc that has been partially recorded and to properly record from the next recording position, it is necessary to perform the following steps before recording. It is necessary to move the head in advance to the position indicated by the counter of the cassette holding the disk.

〔the purpose〕

The present invention has been made in view of the above circumstances, and uses a record carrier holder that holds a record carrier and is equipped with a movable indicating member for indicating a recording position on the record carrier. It is an object of the present invention to provide a recording apparatus that can ensure that, prior to recording, the recording head is set at the recording position indicated by the indicating member of the holder.

[Explanation based on examples]

Hereinafter, the means taken in the present invention to achieve the above object will be illustrated and explained using examples.

First, referring to FIG. 1, in the same figure, l indicates a cassette as a record carrier holder, and a flexible rotating magnetic disk 2 as a record carrier is housed inside the cassette. A center core 3 is provided at the center of the magnetic disk 2 as a mounting part made of synthetic resin or the like.
The lower surface of the center core 3 has a magnetic plate 3d (third B,
3C (illustrated) is fixed, and a magnetic pin 3e is fixed to the same magnetic plate 3d.
is implanted so as to penetrate through the center core 3. The cassette l has upper and lower openings 1a and lb.
A stabilizer plate (described later) for stabilizing the rotation of the magnetic disk 2 can be inserted therein. Then, the recording magnetic head 5 is brought into contact with the recording surface of the magnetic disk 2 through the lower surface side opening tb. Reference numeral 6 designates a spindle as a rotation drive unit for the magnetic disk 2, which is rotationally driven by a magnetic disk rotation motor 84 shown in FIG. This contact defines the height of the magnetic disk 2 with respect to the hend 5. A permanent magnet 7 is provided on the flange portion 6a of the spindle 6, and the i3B is provided on the center fist core 3 described above.

3e Attract the illustrated magnetic plate 3d. In addition, lc.

1d is the top of the cassette 11 corresponding to the center core 3,
It is an opening on the bottom surface.

The fitting hole 3C of the above-mentioned center e-core 3 for the spindle 6 is formed by two slope parts 3b and a spring part 3a, and when the cassette 1 is installed, the center core They are attached so that the slope portions 3b of No. 3 are in contact with each other. Then, the spindle 6 and the magnetic disk 2 are integrally coupled and rotated by the pressing force between the center core 3 and the spindle 6 and the attractive force of the permanent magnet 7, and signals are recorded by the aforementioned head 5. be.

Reference numeral 4 denotes a counter as a recording position indicating member having ratchet teeth on its outer periphery, and a hole 4a in the center of which is engaged with a counter drive shaft 8 provided on the recording apparatus side, and a key groove 4b connected to the hole 4a. is provided. This keyway 4
b engages with a key portion 8a provided on the drive shaft 8.

Further, an elastic click stop member (not shown) serving as a positioning member is provided to engage with the ratchet teeth on the outer periphery. Here, one pitch of the ratchet teeth on the outer periphery of the counter 4 is set so as to correspond to one recording track pitch on the magnetic disk 2, and the drive shaft 8 is a moving mechanism for the magnetic head 5, as will be described later. The head is configured to rotate in relation to the head movement operation. As will be described in detail later, the drive shaft 8 is configured such that when the key portion 8a thereof and the key groove 4b of the counter 4 are in phase, the two engage with each other. A switch is attached that can be turned on and off in relation to the vertical movement of. 1e and if are openings on the upper and lower surfaces of the cassette l corresponding to the counter 4, and a scale 1g indicating the recording track number is formed around the upper surface side listening port 1e, and the counter 4 has the openings in the key groove 4b thereof. The recording track number is designated by the position relative to 1 g of 1 plate.

Referring to FIG. 2, reference numeral 11 indicates the main body of the recording apparatus, and the above-mentioned spindle 6, counter drive shaft 8, and head 5 are rotatably and movably provided in the main body. ing. Furthermore, the main body 11 has a hinge shaft 12.
is provided. Reference numeral 16 denotes a side plate provided on the main body 11. A shaft 17 is mounted on the side plate 16, and a tension lever 18 to which a force is applied clockwise by a spring 19 is rotated. It is movable. Furthermore, ipsilateral plate 1
6 has a pair of pins 20 planted therein, and two lock levers 21 and 23 which are slidable while being guided by the pins 20 are provided and biased to the left in the figure by springs 22 and 24, respectively. The springs 41 and 42 are pins that are attached to the springs 22 and 24, and are installed in the side plate 16.

Reference numeral 31 designates a cassette holder as a cassette receiving member, and the holder 31 is rotatably attached to the main body 11 around the aforementioned hinge shaft 12 through its hinge portion 31e. The holder 31 has an opening 31f at one end for receiving the aforementioned cassette 1, and the cassette 1 is inserted through the opening 31f.

Openings 31a and 31b provided in the holder 31
are for allowing entry of stabilizing plates 37 and 15, which will be described later, respectively, and openings 31c and 31d are for allowing entry of a spindle 6 and a protrusion 38a of a center core pressing leaf spring 38, which will be described later, respectively. It is for the purpose of

The opening 31g provided on the lower surface side is for allowing the contact piece 95a of the cassette sensing switch 95 provided on the main body 11 and the drive shaft 8 to enter. Further, the circular opening 31h provided on the upper surface side is for making the counter 4 of the cassette l observable together with the scale 1g on the upper surface of the cassette l.

35 is an outer housing member, that is, an outer cover, and the outer cover 3
5 is rotatably attached to the main body 11 around the aforementioned hinge shaft 12 through its hinge portion 35a. There is a lock on the 35cm side of the tip of the external force par 35.
Pins 36a and 36b are implanted, and the holder 3
1 is provided with a hook member 40. The outer cover 35 is a circular opening that allows the counter 4 of the cassette 1 to be observed together with the scale 1g on the top surface of the cassette 1, and a magnifying glass 45 is fitted therein so that the counter 4 and the scale 1g can be viewed in an enlarged manner. ing. 37 is a one L side stabilizing plate attached to the ceiling of the outer cover 35, and the magnetic disk 2 is rotated by sandwiching the magnetic disk 2 from below -E together with the lower side stabilizing plate 15 provided on the main body 11 side. Prevents vibration and deformation. In this case, each stabilizer plate 3
7.15 and the magnetic disk 2, their positions are set so that an appropriate air layer is formed between them. Furthermore, head 5
protrudes through an opening 15a provided in the center of the lower stabilizing plate 15. 38, its tail end 38b is the outer cover 3
A T-shaped leaf spring, which is an example of center core suppressing means, is fixed to the ceiling of the building 5 with screws or the like, and a portion 38a of its tip is formed so as to protrude downward as shown in the figure. The ears 38c on both sides are locked against the elasticity of the leaf spring 38 by the position regulating members 39 fixed to the ceiling of the outer cover 35, so that the protrusion 38a moves to the spindle when an initial force is applied thereto. It is placed at the top of 6.

The spring 13 disposed on the hinge shaft 12 has its arms applied to the holder 31 and the outer cover 35, respectively.
A rotational force in the opening direction is applied between the two. Further, the spring 14 applies a counterclockwise rotational force to the outer cover 35 by having one arm of the spring 14 applied to the main body 11 and a narrow arm of the spring 14 to the outer cover 35 .

Reference numerals 95, 96 and 97 are normally open type switches provided in the main body 11, and the switch 95 is a switch 95 which is a normally open switch when the cassette 1 is inserted into the holder 31 as shown in FIGS. 3B and 3C, which will be described later. The switch 96 is a cassette sensing switch arranged so that the contact sides 95a and 95b come into contact when the pin 95c is pressed at the third position.
The outer cover close detection switch is arranged so that the contact pieces 96a and 96b come into contact when the pin 96c is pushed by a part of the outer cover 35 only at the position of the outer cover 35 in Figure B, and , the switch 97 has an outer cover arranged so that its contact piece 97a is pressed by the switch control arm 23d of the lock lever 23 and the contact pieces 97a and 97b come into contact in the state shown in FIGS. 3C and 4C, which will be described later. This is an unlock detection switch.

In this configuration, in order to load the cassette 1, the outer cover 35 is opened by rotating it counterclockwise around the hinge shaft 12 with the biasing force of the spring 14 against the main body 11, as shown in FIG. 3A. , one end 35b thereof comes into contact with the main body wall 11a and is brought to a stopped state. In this case, the holder 31 tries to rotate clockwise relative to the outer cover 35 due to the biasing force of the spring 13, but it seems to be restrained in the position shown in FIG. 3A by the hook member 40 provided on the outer cover 35. become.

Here, to explain the state of the levers provided on the side plate 16 mentioned above, when the outer cover 35 and holder 31 are opened as shown in Fig. 3A, the tension lever is activated as shown in Fig. 4A. 18 hook 118b and the claw portion 21d of the lock lever 21 are in an engaged state. Also, the bent portion 21c of the lock lever 21 and one end 23c of the lock lever 23 are in contact with each other, so that both ends can be locked.
The levers 21,23 are each locked in a position displaced to the right against the springs 22,24. In addition, the claw portion 21a provided on both lock Φ levers 21 and 23
and 23a, 21b, and 23b are lock pins 36a implanted in the outer cover 35.

It is located outside the movement trajectory of 36b. In this state, the contact piece 9 of the aforementioned outer cover/unlock detection switch 97
7a and 97b are in a non-contact state.

Returning again to FIG. 3A, insert the cassette 1 through the opening 31f of the holder 31 in the state shown, and rotate the outer cover 35 clockwise about the hinge shaft 12 against the biasing force of the spring 14. Then, the holder 31 also rotates in the same direction around the hinge shaft 12, and at the position corresponding to the cassette loading and disk loading completion position shown in FIG. It enters into the fitting hole 3C of the center core 3, and the lower stabilizing plate 15 and upper stabilizing plate 37 also enter into the openings 1b and la of the cassette l through the openings 31b and 31a of the holder 31, respectively. At this time, as shown in FIG. 3B, when the outer cover 35 is pushed further in the direction of the arrow from the position corresponding to the cassette loading and disk loading completion position shown in FIG. 3C, the outer cover 35 is The magnetic disk 2 is
The center core 3 is urged toward the spindle 6, and its lower surface comes into contact with the fringe surface 6b of the flange portion 6a of the spindle 6. Incidentally, at this time, the quantitative difference between the pushing stroke of the outer cover 35 and the required pushing amount of the center core 3 is absorbed as the deflection of the leaf spring 38. Also, this poem, outer cover closure detection switch 96
When the pin 96c is pressed by a part of the outer cover 35, the contact pieces 96a and 96b come into contact with each other. Furthermore, if the cassette l is inserted into the holder 31 as described above,
In the state shown in FIGS. 3B and 3C, the pin 95c of the contact piece 95a of the cassette sensing switch 95 is pressed by the cassette 1 and comes into contact with the contact piece 95b. Of course, when the cassette 1 is removed, both contact pieces 95a and 95b remain out of contact.

Here, when the outer cover 35 is pushed in as shown in FIG.
, 36b, the pin 36b is connected to the tail end 1 of the tensioning lever 18.
8a and move the same lever 18 against the spring 19 to the shaft 1.
7 in the counterclockwise direction.
The engagement between the link portion 18b and the claw portion 21d of the lock life lever 21 is released. As a result of this release of engagement, the lock lever 21 moves to the left under the force of the spring 22 as shown in FIG. 4B, and at this time, the claw portions 21a of the lock pins 36a, 36bc7) are respectively disposed on the upper side.

21b will be located. At this time, the side end of the lock lever 23's claw portion 23a or 23b is locked.
By abutting the pin 36a or 36b from the side, the spring 24 prevents the spring 24 from moving to the left, and the lock lever 21 is held against the movement. Thereafter, when the push-in of the outer cover 35 is released, the outer cover 35 attempts to rotate counterclockwise around the hinge shaft 12 due to the urging force of the spring 14, but at this time, the lock φ pin 3
6a, 36b and the claws 21a, 21 of the lock lever 21
b are engaged with each other, and their rotation is prohibited. At this time, the outer cover closing detection switch 96 opens by its own sliding property. Also, at this time, the lock lever 23 moves to the left by the biasing force of the spring 24 until it is regulated by the bent portion 21c of the lock lever 21, and the claw portions 23a, 23b and the lock pins 36a, 36b are moved. and are engaged as shown in FIG. 4C. That is, at this point, the outer cover 35 is fixed to the main body 11. And in this state, the lock
The contact piece 97a of the outer cover lock release detection switch 97 is brought into contact with the contact piece 97b by the switch control arm 23d of the lever 23, and the tip protrusion 38a of the leaf spring 38 provided on the outer cover 35 is brought into contact with the third C. As shown in the figure, the contact with the center core 3 is cut off, and the magnetic disk 2 is properly attached to the spindle 6, and in this state it can be rotated by the rotation of the spindle 6.

Incidentally, to take out the cassette l, push the bent part 21e of the lock lever 21 protruding from the slot-shaped opening 16 of the side plate 16 to the right in FIG. 40 against the springs 22 and 24 to lock it. <-21 is locked by the tension lever 18 as shown in FIG. 4A, and as a result,
The lock lever 23 returns to its original position, and at this time, the outer cover Φ lock release detection switch 97 opens and the outer cover 35. It is unnecessary to explain in detail that the holder 31 is brought into the state shown in FIG. 3A by the action of the spring 13.degree.l4.

In FIGS. 3A, 3B, and 30, reference numeral 43 indicates a positioning member for the cassette 1 provided at the bottom inside the holder 31. In connection with the closing of the outer cover 35, a leaf spring 44 or the like is provided to press the cassette l toward the positioning member, thereby making it possible to securely position the cassette l with respect to the holder 31.

Now, in the configuration of the cassette l side and the magnetic disk loading mechanism described above, when the cassette loading and disk loading are completed as shown in FIG. Since the force applied to the center core 3 of the magnetic disk 2 is released, the rotation of the magnetic disk 2 for recording is
In addition to the advantage of having no adverse effects, for example, the outer cover 35 has two pins 17, 36a and 36b.
) C' Since it is clamped and locked between the levers 21 and 23, its position is restricted in both the opening and closing directions, so the cassette loading and disc loading in Figure 3C are completed. Even if an external force is applied to the outer cover 35 in this state, the outer cover 35 remains in an immovable state and can prevent this external force from having an adverse effect on the magnetic disk 2 and the center core 3. As shown in FIG. 3B, the cover 35 is not raised unless the cover 35 is pushed further beyond the position corresponding to the completed state of cassette loading and disk loading shown in FIG. 3C, and upon this further pushing, the leaf spring 38 Since this causes the center core 3 of the magnetic disk 2 to be biased in the direction of the spindle 6, it is possible to reliably guarantee the connection between the center core 3 and the spindle 6. This provides advantages such as the permanent magnet 7 of No. 6 can be made smaller.

Next, the magnetic hand moving mechanism and counter drive mechanism will be explained with reference to FIGS. 5 and 6.

First, referring to FIG. 5, reference numeral 5 designates the aforementioned magnetic head, which is fixed to the head carrier 46 via the head mounting board 9 in its hole 46c. The head carrier 46 is supported by a kite rail 47 via a sliding ball 48 and is movable along the guide rail 47. Ball 48 is head carrier 4
6 and the guide rail 47, respectively, into V-shaped grooves 46e and 47a at their respective side ends.

46d is a long hole formed in the head [phase] carrier 46 to allow the spindle 6 to escape. head carrier 46
A cam is connected to the tip of the arm portion 46a via a shaft 46C.
A follower roller 49 is rotatably mounted. Furthermore, the spring hook of the carrier 46 is
It is biased upward in FIG. 1 by a spring 50 via b. Note that the fixed spring hook 50a is a bottle.

Reference numeral 8 designates the aforementioned counter drive shaft, which rotates concentrically and integrally with the cam 51 and ratchet gear 52 as head moving members, and is also movable in the axial direction. It is biased to protrude in the direction of engagement with the counter 4 on the cassette l side. That is, as shown in detail in FIG. 6, the cam 51 is connected to the ratchet gear 5 by the screw 68.
It is attached to the top surface of 2 so that its position can be adjusted, and on the other hand,
A hollow pobbin 69 is fixed to the lower surface of the ratchet gear 52 with a screw 70. A first flange member 71 is fixed to the outer periphery of the pobbin 69 by press-fitting means, and a body portion 71a of the first flange member 71 is inserted into a hole 74a of the chassis plate 74.

The second flange member 72 is fixed to the bottom of the pobbin 69 with screws 73 so that the chassis plate 74 is sandwiched between the flange portion 72b and the flange portion 71b of the first flange member 71. In this manner, the ratchet gear 52 is rotatably supported by the chassis plate 74 in a state where it is prevented from being removed. On the other hand, the drive shaft 8 has a cam 51 . Ratchet gear 52
and the hole in the center of the bottom of the pobbin 69 and the hole in the hollow part of the second flange member 72, and its tail end is inserted into the second hole.
It protrudes to the back side of the flange member 72. and,
A retaining ring 75 is fixed at an appropriate position within the bobbin 69 of the drive shaft 8, and a compression coil spring 76 is installed between the ring 75 and the bottom surface of the bobbin 69. As a result, the drive shafts 8 can be moved in the axial direction in a two-way manner, and can be biased to protrude in three directions. On the other hand, a slit 1-72c is formed in the body 72a of the second flange member 72, and a pin 8b implanted on the circumferential surface of the drive shaft 8 engages with this slit 72C. As a result, the drive shaft 8 is rotated integrally with the second flange member 72, and thus integrally with the ratchet gear 52 and the cam 51.

A normally closed counter gear-in detection switch 77 is provided below the tail end of the drive shaft 8 so as to be opened when the drive shaft 8 is pushed downward.

Returning again to FIG. 5, the cam surface 51 on the outer periphery of the cam 51
The aforementioned cam follower roller 49 is in contact with a. The ratchet Φ gear 52 is provided with ratchet teeth 52a on its outer periphery, and is further rotated in the clockwise direction by a return spring 53 hooked between a pin 52b implanted on the lower surface and a fixed pin 53a. Provides sliding properties. In addition, a stopper 74b is provided at an appropriate position on the chassis plate 74'' in FIG. 6 with respect to the pin 52b of the ratchet gear 52.
2 is restricted from rotating in the direction of the trunk by the pin 52b abutting against the stopper 74b.

Reference numeral 54 designates a control pawl as a positioning means for the drive shaft 8 and the cam 51, which is rotatable around the shaft 55 and rotated counterclockwise by a spring 56 applied between the tail end 54b and the pin 61. A biasing force is applied, and the tip claw portion 54a engages the ratchet teeth 5 of the ratchet middle gear 52.
2a. 57 is a drive claw, and the drive lever 60
It is supported by a shaft 58 provided at one end, and a clockwise biasing force is applied by a spring 59. The tip claw portion 57a can engage with the ratchet teeth 52a of the ratchet gear 52. The drive lever 60 is engaged with a pin 61 in its elongated hole 60b, so that it can move up and down in the figure, and
A spring 62 applied between the pin 60c and one of the pins 60 biases it downward in the figure. In the illustrated state, the tip of the drive claw 57 comes into contact with the pin 65 and is stopped.

The arm portion 60a of the drive lever 60 is connected by a pin 63a.
It is connected to the plunger 63 of the solenoid 64.

Incidentally, here, the moving mechanism for the head 5 is constituted by the above-mentioned elements 46 to 64.

In this configuration, when the solenoid 64 is energized, the plunger 63 is attracted, and the drive lever 60 moves upward in the figure via its arm portion 60a, and at this time, the drive claw 57 engages the ratchet. - The gear 52 is rotated counterclockwise against the return spring 53. At this time, the inclined portion 57c of the drive claw 57 and the pin 66 come into contact with each other to restrict the upward movement of the drive claw 57, thereby preventing the ratchet gear 52 from rotating more than necessary.

When the power to the solenoid 64 is cut off, the drive lever 60 and the drive pawl 57 are returned to the illustrated position by the spring 62, but at this time, the ratchet gear 52 is rotated by one ratchet tooth 52a by the control pawl 54. It will be held in the position you are holding it in. Therefore, this ratchet gear 52
The cam 5 corresponds to the rotation of one tooth of the ratchet tooth 52a.
By setting the lift amount of 1 to the amount of head movement equivalent to 1 track pitch on the magnetic sheet 2, the head 5 can be moved step by step by 1 track working pitch by the movement of the head carrier 46. . At this time, the drive shaft 8 is also rotated counterclockwise by one tooth of the ratchet tooth 52a of the ratchet gear 52, and therefore, in this poem, the drive shaft 8 is connected to the counter 4 on the cassette 1 side. If so, the counter 4 is also rotated counterclockwise to the ratchet gear 52.
The ratchet tooth 52a is rotated by one ratchet tooth 52a. At this time, by adjusting the pitch of the ratchet teeth (not shown) on the outer periphery of the counter 4 to the pitch of the ratchet teeth 52a of the ratchet gear 52, the counter 4 is moved to the forward position by an elastic click stop member (not shown). At that position, the position of the keyway 4b relative to the scale 1g on the top surface of the cassette 1 indicates the track position at that time.

To reset the head moving mechanism to its initial state, for example, in conjunction with the slide of the lock lever 21 to the right in FIG. 4C, the pin 67 is moved downward in FIG. Tail end 54b of claw 54 and tail end 57 of driving claw 57
b, move the control claw 54 clockwise, and turn the drive claw 57
are rotated counterclockwise against the springs 56 and 59, respectively, to release the ratchet gear 52 from its engagement with the ratchet 1i 52a. Here, if only the control claw 54 and the drive claw 57 are separated from the ratchet gear 52, the drive shaft 8 is still engaged with the counter 4 on the cassette l side (that is, the counter 4 is not acted on). The locking force of the click stop member is stronger than the force of the return spring 53 acting on the ratchet I gear 52.
The drive shaft 8 is in a state where it cannot rotate clockwise), and the fifth
No change occurs in the mechanism shown, but by sliding the locking lever 21 to the right, the outer cover 35 and the holder 31 are unlocked in the closed state, and these are moved by the action of the springs 13, 14. At this time, the counter 4 of the cassette l and the drive shaft 8 are disengaged, so the drive shaft 8 becomes unloaded, and therefore the ratchet 0 gear 52. The cam 51, the drive shaft 8, and the head carrier 46 each return to their initial positions. Note that the initial position of the head 5 returned to this orientation is, for example, when the outermost track of the recording area of the magnetic sheet 2 is set as the first track, the head 5 is returned to the outermost position by l track pitch. This is the predetermined position that was moved to. Further, as can be understood from the above, when the cassette 1 is removed from the recording device, the counter 4 is removed because the elastic click stop member 5 is engaged with the ratchet teeth on its outer periphery. The current display position, that is, the track number, will be retained. Therefore,
The counter 4 of this cassette 1 serves as a so-called memory of the recording position of the magnetic sheet 2, and when recording is performed using the cassette 1 containing the magnetic disk 2 that has been partially recorded, etc. By using the signal of the switch 77 linked to the drive shaft 8 mentioned above, it is possible to perform recording from a subsequent unrecorded position without causing the risk of double recording on an already recorded track. Become.

Next, the configuration of the electric circuit system of the recording apparatus having the above mechanical configuration will be explained with reference to FIG.

In the figure, 78 is a circuit power supply (power battery in the figure) that constitutes a power supply circuit together with the power switch 79, 80 is a switching circuit for keeping the power on, which is provided in parallel with the power switch 79, and 81 is an input terminal 80a. A recording circuit 82 records the illuminated video signal onto the magnetic disk through the head 5 under the control of a recording operation control circuit 87, which will be described later. energizing solenoid energizing circuit, 83
is a motor control circuit that operates the disk rotation motor 84 under the control of the initialization circuit 86 and the control circuit 87, and here the reference speed signal from the internal reference oscillator and the rotation speed signal (FG) from the motor 84 are used. and,
The vertical synchronizing signal (Vs) separated from the input video signal from the recording circuit 81 and the center signal of the disc 2
A disk rotation phase signal (P
Based on
) The motor 84 is controlled so that it is rotated at a predetermined phase with respect to the timing. 86 responds to turning on the power circuit by turning on the power switch 79, and maintains the power circuit in the ON state until the head 5 reaches the recording position indicated by the counter 4 of the cassette 1, and during this time, the head An initialization circuit is an example of a control means for operating a motor 84 as a moving means and a disk rotating means, and as shown in the figure, when the head 5 reaches the recording position indicated by the counter 4, the counter drive shaft 8 is activated. When the key 8a engages with the keyway 4b of the counter 4, it is switched from off to on. An inverter 861 for inverting the potential at the connection point C between the counter key-in detection switch 77 (FIG. 6) and the resistor 94 as a detection means for detecting that the head 5 has reached the recording position.
, an AND gate 862 which receives the potential of the connection point S between the above-mentioned cassette sensing switch 95 and the resistor 93, and the output of the inverter 861, and an AND gate 863 which receives the potential of the connection point S and C of the above-mentioned connection point C. , a pulse generator 864 that generates continuous pulses for head φ shift, and an AND gate 865 that receives the output of this pulse generator 864 and the output of an AND gate 862. is applied to the switching circuit 80 through the OR gate 89 as a power-on hold signal, while the OR signal is applied as a disk rotation motor operation signal.
The output of the AND gate 863 is applied to the motor control circuit 83 through the gate 91, and the output of the AND gate 863 is a recording ready signal (R
D) is provided to the recording operation control circuit 87, while
OR gate 91 as a motor operation signal for disk rotation
The output of the AND gate 865 is applied as a head shift signal to the solenoid energizing circuit 82 through ORG 90. Reference numeral 87 is the recording operation control circuit mentioned above, which, as shown in the figure, controls the potential at the connection point a between the recording start switch 88 and the resistor 92, and the AND gate 863 of the initialization circuit 86.
AND gate 87 which receives the output of
1, and a timer 862 that outputs a high level signal for a predetermined period of time in response to the high output of the Aledo gate 871.
an inverter 873 that inverts the output of the AND gate 871; a fall-synchronized D flip-flop 874 that is triggered by the fall of the output of the inverter 873; and a vertical synchronization signal (Vs) from the recording circuit 81. Three falling synchronized D− triggered by the falling edge of
Flip-flops 875, 876, and 877; AND gate 878 receiving the Q output of flip-flop 875 and the Q output of flip-flop 876; AND gate 87 receives the Q output of
The flip-flop 874 at the first stage has a high level (+Vcc) at its D input, and the flip-flop 7'
- Flops 875, 878 and 877 receive the Q outputs of flip-flops 874, 875 and 876 in the previous stage, respectively, and these four flip-flops 874 to 877 are all disabled when the power supply circuit is turned on. Power-0 up clear signal (P
Cleared by UC). Here, the output of the timer 872 is applied as a power-on holding signal to the switching circuit 80 through the OR gate 89, and
The output of AND gate 879 is applied to the recording circuit 81 as a recording gate signal, and the output of AND gate 879 is applied to the head signal.
The shift signal is applied to the solenoid energizing circuit 82 through the OR gate 90.

Here, the aforementioned outer cover closing detection switch 96 is connected in parallel to the power switch 79 in the power supply circuit, while the outer cover lock detection switch 97 operates the motor 84 only when it is on. It is connected to the motor control circuit 83 as an enable switch so as to enable it.

The circuit system shown in FIG. 7 is powered from the power source 78 when the power switch 79, the outer cover closure detection switch 96, or the switching circuit 80 is turned on.

Next, the operation of the circuit system having the above configuration will be explained with reference to FIG.

First, as described above, when loading the disk cassette 1, the steps shown in FIGS. 8(a) and (b) in connection with closing the outer cover 35 are as follows.
As shown in (c), the cassette detection switch 95, the outer cover close detection switch 96, and the outer cover lock detection switch 97 are turned on in sequence. Then, when the switches 95 and 96 are turned on, at this time, the phases of the key groove 4b of the counter 4 and the key 8a of the drive shaft 8 do not match.
Therefore, if the counter key-in detection switch 77 is off as shown in FIG. 8(d), the output of the AND gate 862 in the initialization circuit 86 becomes high as shown in FIG. 8(e). As a result, the switching circuit 80 is maintained in the on state, and therefore, even if the outer cover closure detection switch 96 is subsequently turned off, the power supply circuit is maintained in the on state. Further, since the switch 97 is turned on, the motor control circuit 83 operates the disk rotation motor 84 to rotate the disk 2 due to the high output of the AND gate 862, while the AND gate 865 turns on the high output of the AND gate 862. 8
The pulses from the pulse generator 864 are output as shown in FIG. 8(f). As a result, the solenoid energizing circuit 82 energizes the solenoid 64 for each pulse, so that the head 5 is moved from the outer circumferential side to the inner circumferential side of the disk 2. In the process of moving the head 5, the head 5
reaches the recording position indicated by the counter 4, and therefore the key groove 4b of the counter 4 and the key 8 of the drive shaft 8
When a comes to engage, at this point, as shown in Fig. 8(d)
The switch 77 is turned on as shown in FIG. 8(e), and therefore the output of the AND gate 862 becomes low as shown in FIG. 8(e). Therefore, at this point, the switching circuit 80 is turned off, the power supply circuit is turned off, and the operation is stopped.

The above is the recording preparation operation, but during this recording preparation operation,
Since the output (RD) of the AND gate 863 in the initialization circuit 86 is low as shown in FIG. 8(h),
Even if the recording start switch 88 is turned on during this time, this is invalidated.

Now, when the recording preparation is completed as described above, when the power switch 79 is turned on as shown in FIG. 8(g), since the switches 95, 96 and 77 are all on, the state shown in FIG. 8(h) is turned on. As shown in FIG.
The output (RD) of gate 863 goes high, which allows motor control circuit 83 to operate motor 84 again. Thereafter, when the recording start switch 88 is turned on as shown in FIG. 8(i), the rotation of the disk 2 reaches a predetermined speed and a predetermined phase as shown in FIG. Servo lock-in signal (S
When the signal L) becomes high, the output of the AND gate 4871 in the recording operation control circuit 87 becomes high as shown in FIG. 8(k). This triggers the timer 872 and starts outputting a high level signal for a predetermined period of time as shown in FIG. 8 (vertical), thereby keeping the switching circuit 80 on. On the other hand, when the output of the AND gate 871 becomes high, the output of the inverter 873 becomes low, so the free signal that was cleared when the power switch 79 was turned on is
The amplifier Φ-flop 874 is triggered and its Q output goes high as shown in FIG. 8(m). Here, by turning on the power switch 79, the recording circuit 81 outputs a vertical synchronizing signal (Vs) as shown in FIG. As shown in FIG. 3, immediately after the Q output of the clip flop 874 goes high, the fall of the vertical synchronization signal (Vs) causes the Q output to go high. Next, as shown in FIG. 8(p), the Q output of the flip-flop 876 becomes high (Q output is low) due to the fall of the next vertical synchronizing signal (Vs), and then the next vertical synchronizing signal (Vs) becomes high (Q output is low). (Vs) falls, as shown in Fig. 8 (q
), the Q output of the clip flop 877 becomes low. Therefore, at this time, the Q output of flip-flop 875 and the Q output of flip-flop 876 cause the eighth
As shown in Figure (r), the output of the AND gate 878 becomes high for one field period immediately after the Q output of the flip-flop 874 becomes high, and in response, the recording circuit 81 becomes high for one field period. A video signal for one line is recorded on the disk 2 through the head 5. At this time, the disk 2 is rotated at a speed corresponding to the field frequency, so that one field's worth of signals is recorded in exactly one revolution of the disk 2. On the other hand, Free 2
Q output of flip-flop 876 and flip-flop 8
Due to the Q output of 77, the output of AND gate 879 becomes high for the next one field period as shown in FIG.
As a result, the head 5 is shifted to the next recording position, and at this time, the counter 4 is moved by the drive shaft 8.
will be incremented by one.

Thereafter, the output of the timer 872 becomes low, and therefore, if the power switch 79 is turned off at this point, it will stop operating. Hereinafter, each time the power switch 79 is turned on and the recording start switch 88 is turned on, each time the l field 1 is moved to a new position on the disk 2.
minutes of video signal will be recorded.

Here, in this embodiment, the disc 2 is configured to be rotated by the motor 84 whenever the head 5 is moved during the recording preparation operation and after the end of recording. This is extremely useful in preventing damage to the recording surface of the disk 2 due to movement of the head 5.

Furthermore, when removing the cassette if, the outer cover/unlock detection switch 9 is activated as the outer cover 35 is unlocked.
7 is turned off, and since this switch 97 is connected to the motor control circuit 83 as an enable switch, an erroneous operation such as removing the cassette (l) with the power switch 79 left on will not occur. Even if the outer cover 35 is unlocked and the switch 97 is turned off, the motor 84 is stopped. Therefore, the risk of damage to the disk 2 due to such an erroneous operation is eliminated, and the disk 2 is Stability is ensured.

In the configuration of the embodiment, it is convenient if the power switch 79 and the recording start switch 88 can be turned on sequentially with the same operating member, like a two-stage Leeds system in a camera. . Further, the recording device may include an imaging system, such as a so-called electronic camera, in which case the output of the imaging system is connected to the input terminal 81a of the recording circuit 81.

〔effect〕

As detailed above, according to the present invention, a record carrier is held,
In addition, as a recording apparatus using a record carrier holder equipped with a movable indicating member for indicating a recording position on the record carrier, the recording head is instructed by the indicating member of the holder prior to recording. This makes it possible to reliably guarantee that the recording position is set at the desired recording position, and is extremely useful for this type of recording apparatus.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a record carrier holder and a drive unit on the apparatus side used in an embodiment of the present invention, and FIG. 2 is a perspective view of an embodiment of the present invention, in particular a cassette loading and disc loading mechanism. The exploded perspective view, FIG. 3A, FIG. 3B, and FIG. 3C are sectional views showing various states of the mechanism shown in FIG. 4C is a plan view showing details of the cover/lock portion in each state in the second illustrated mechanism; FIG. 5 is a plan view of an embodiment of the present invention, particularly the head moving mechanism; FIG. 5. A sectional view showing the essential parts of the illustrated mechanism along the BB cross section in FIG. 5. FIG. 7 is a block diagram showing the configuration of an electric circuit system according to an embodiment of the present invention. FIG. 8 is an operation of the device. 7 is a timing chart showing the input/output of main parts in the circuit system shown in FIG. 7 at the time of FIG. 1... Magnetic disk/cassette 2... Magnetic disk 4... Counter 5
... Magnetic head 6 ... Disk rotation spindle 8 ... Counter drive shaft 31 ... Cassette holder 36 ... Outer cover 46 ... Head carrier 51 ... Cam 52 ... Ratchet Gear 54... Control claw 57... Drive claw 64
... Solenoid 77 ... Counter key-in detection switch 78
... Circuit power supply 79 ... Power switch 80 ... Switching circuit 81 ... Recording circuit 82 ... Solenoid energizing circuit 83 ... Motor control circuit

Claims (4)

[Claims] (1) A recording device that uses a record carrier holder that holds a record carrier and is equipped with a movable indicating member for indicating a recording position on the record carrier, comprising: a recording head; and the above-mentioned recording head. a moving means for moving the recording head; a detecting means for detecting that the recording head has reached a recording position indicated by an indicating member of the record carrier holder; and loading of the record carrier holder. a power supply circuit including a switch operated in connection with the above; and control means for operating the moving means. (2) When the recording head reaches a recording position indicated by the indicating member of the record carrier holder, the recording head is operatively connected to the indicating member, and from then on, in connection with the movement of the recording head, the indicating member Claim 1 further comprising a drive member for driving the member, wherein the detection means is arranged to detect the operative connection between the drive member and the indicator member. Recording device as described. (3) A recording device that uses a record carrier holder that holds a rotary record carrier and is equipped with a movable indicating member for indicating a recording position on the record carrier, comprising: a recording head; , a moving means for moving the recording head; a detecting means for detecting that the recording head has reached a recording position indicated by the indicating member of the record carrier holder; and rotating the record carrier. a power supply circuit including a switch operated in connection with the loading of the record carrier holder; and a power supply circuit including a switch operated in connection with the loading of the record carrier holder; a control means for maintaining the power supply circuit in an on state and operating the moving means and the rotating means until reaching the destination. (4) When the recording head reaches a recording position indicated by the indicating member of the record carrier holder, the recording head is operatively connected to the indicating member, and from then on, the indicating member Claim 3 further comprising a drive member for driving the member, wherein the detection means is arranged to detect the operative connection between the drive member and the indicator member. Recording device as described.