JP2715495B2 - camera - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera that can automatically load a film into the camera.

[Prior Art] In a conventional camera, a patrone room has only a function of simply storing a film patrone. That is, when loading a film, for example, the back cover is first opened and the film cartridge is stored in the cartridge room. Then, the user holds the film coming out of the film patrone by hand and positions it on the path from the film feed port of the patrone chamber to the film exposure section.
Thereafter, the film is loaded by manually operating the winding lever or by operating the automatic film winding device by closing the back cover or the like.

However, in the case of the above-described prior art, when loading the film, the user must set the film in a predetermined position or insert the film into the film feeding port, and the handling of the film is troublesome and troublesome. Met. This exists similarly in a camera that winds a film manually and in a camera that has a device that winds a film automatically.

In order to solve such a problem of the prior art, the applicant of the present invention disclosed in Japanese Patent Application Laid-Open No. Sho 62-156641 automatically loads a film stored in a film patrone into a camera, and opens a patrone chamber. We propose a camera that is more compact.

[Problems to be Solved by the Invention] The cameras proposed by the applicant of the present invention as described above are insufficient from the viewpoint of automatic loading. In such a camera, the film leading end is configured so that the film is automatically sent from the delivery port to the spool chamber beyond the film exposure opening, but due to some abnormality, the film leading end does not come out of the delivery port, Even when the film tip comes out of the delivery port, the film tip may fall into the exposure opening or be caught on the wall at the end of the exposure opening to damage the film. SUMMARY OF THE INVENTION An object of the present invention is to solve a problem that can occur when a failure occurs in automatic film loading as described above, and an object of the present invention is to provide a camera that can prevent film damage even in automatic film loading.

[Means for Solving the Problems] By loading a film container into the film storage chamber according to claim 1, the film in the film storage chamber can be fed from the delivery port to the spool chamber toward the spool chamber. The camera includes a film sending unit that sends the leading end of the film to the spool chamber, a detecting unit that is provided in a passage of the leading end of the film that is sent from the outlet, and detects whether or not the film has passed. And control means for rewinding the film when the passage of the leading end is not detected.

In the camera according to the second aspect, the control means of the camera according to the first aspect operates the film sending means again after rewinding the film.

In the camera according to the first aspect, the film sending means detects whether or not the leading end of the film has passed through the passage path, and the detecting means detects that the leading end of the film has not passed through the passage path. In this case, the film is rewound.

In the camera according to the second aspect, in the camera according to the first aspect, after the film is rewound, the leading end of the film is sent out again.

Embodiment FIG. 2 is a perspective view showing the overall configuration of a camera according to an embodiment of the present invention.

 Hereinafter, the configuration will be described with reference to the drawings.

The camera CA includes a photographing lens 2 located substantially at the center of the front of the camera body 1, a finder window 3 located above,
It has a flash light emission window 4 for emitting light from a flash, and a light receiving window for luminance detection and a subject distance measurement window 5 for receiving information from a subject. At the right end of the upper surface of the camera body 1, a patrone chamber 6 for accommodating a film patrone (135-type film patrone specified in JIS) P is provided.
Are formed. A lock lever 8 is attached to the camera body 1 so as to be rotatable around an axis 7a of a lid 7 that opens and closes an upper opening of the patrone chamber 6. Are provided adjacent to each other. The lock lever 8 is supported so as to rotate between a lock position for locking the lid 7 to the closed position and a lock release position. As shown in FIG. 4, which will be described later, in the lock position, the operating portion 8a acts on the contact piece 9 to activate the normally open lock switch S _s.
Is to be closed. Note that a locking member for locking the lock lever 8 at the lock position may be separately provided. Further, a display section DS for displaying various information is provided on an upper portion of the camera body, and a switch SW used for rewinding the film is provided on a lower portion of the body.

The patrone chamber 6 is formed in a substantially cylindrical shape, and the inside diameter thereof is a film drawing part in the film patrone P.
It is formed slightly larger than the distance from the outermost edge of Pb to the peripheral wall of the film cartridge P facing through the center of the cartridge chamber axis. That is, the inner diameter of the patrone chamber 6 is
D ₁ , film drawer Pb from the center of film cartridge P
D ₁ the distance to the outermost edge of, if the radius of the cylindrical portion of the film cartridge P and d _2, and a _{2d 1> D 1> d 1} + d 2 and the relationship.

Therefore, the film cartridge P is eccentric in the cartridge chamber 6 with respect to the cartridge chamber.

3A to 3C are schematic diagrams showing an internal mechanism and a drive transmission mechanism of the camera according to the embodiment of the present invention. In FIGS. 3A to 3C, the center of the film cartridge P and the center of the cartridge chamber 6 are made coincident for the sake of simplicity, but they are actually eccentric as shown in FIG. .

 Hereinafter, the loading operation will be described with reference to the drawings.

Inside the camera CA, in addition to the patrone chamber 6, a sprocket 40 for film transport, a photographic lens 2, a shutter 12, a film exposure unit 13, a spool chamber 14, a spool 41 containing a motor 21 (M), a film guide lever 42. A battery chamber 45 for accommodating a power supply battery 44 and a film pressure plate 46 are provided. On the side wall of the patrone chamber 6, a slit-type film feed port 6a is formed along the axial direction of the film patrone P. Sprocket 40 for transporting film
And is driven by a motor via a transmission system to be described later, and conveys the film F rightward in the figure.
It should be noted that the film transport sprocket 40 is adapted to engage with the perforations Fc only on the lower side (longer side) of the film F, as shown in FIG. Also,
The side wall 6c (dotted line) near the film outlet 6a of the patrone chamber 6 shown in FIG. 1 is a portion corresponding to the long portion of the front end of the film F.
Are formed in a single paragraph so as to serve as a guide. The guide lever 42 has a roller 42a rotatably provided at a tip thereof, is rotatably mounted around a mounting shaft 42b, and has a spring (not shown).
Accordingly, the roller 42a is urged to elastically press against the spool 41. The guide lever 42 guides the leading end Fa of the film F that has reached the spool chamber 14 so as to advance around the spool 41 in the counterclockwise direction in the drawing, and presses the film F on which the spool 41 has been wound to reduce the winding. It is configured to ensure it. The taking lens 2 is configured such that the focus is automatically adjusted for the subject by the lens driving device based on the distance information to the subject detected by the distance measuring device. Here, the distance measuring device and the lens driving device correspond to an auto focus control circuit AF in FIG. 10 described later.

The shutter 12 is a so-called programmed lens shutter that changes its aperture over time. The shutter 12 is controlled by an exposure control device (EC in FIG. 10) based on luminance information of a subject detected by a photometric circuit (ML in FIG. 10). The exposure is automatically controlled.

Next, a drive transmission mechanism for transmitting a driving force from the motor 21 to the fork 37 (described later), the film transport sprocket 40, and the spool 41 will be described.

As shown in FIG. 3A, the driving force of the motor 21 is a reduction gear system.
The power is transmitted to the gear 23 and the gear 27 via 22. The planet gear 25 meshing with the gear 23 is rotatably mounted on a lever 24 rotatably supported on a rotation shaft 23a of the gear 23. The planetary gear 25 moves to a position where it meshes with the spool drive gear 26 when the gear 23 rotates counterclockwise in the figure, and moves to a position where it does not mesh with the spool drive gear 26 when the gear 23 rotates clockwise. It has become. Spool drive gear 26
Rotates integrally with the spool 41, and rotates the spool 41 counterclockwise when the gear 23 rotates counterclockwise and the planet gear 25 meshes with the spool drive gear 26. Gear 27
Is rotatably mounted on a lever 28 rotatably supported on a rotation shaft 27a of the gear 27. The planetary gear 29 moves to a position where it meshes with the sprocket drive gear 30 when the gear 27 rotates counterclockwise, and moves to a position where it does not mesh with the sprocket drive gear 30 when the gear 29 rotates clockwise. As also shown in FIG. 4, the sprocket drive gear 30 rotates integrally with the film transport sprocket 40, the gear 27 rotates counterclockwise, and the planet gear 20 meshes with the sprocket drive gear 30. At this time, the film transport sprocket 40 is rotated in a counterclockwise direction, and the sprocket 40
By engaging with Fc, the film F is sent to the spool chamber 14 side. gear
31 meshes with the gear 27, and the planetary gear 33 meshing with the gear 31
It is rotatably mounted on a lever 32 rotatably supported on a rotation shaft 31a of the gear 31. The planetary gear 33 moves to a position where it meshes with the gear 34 when the gear 31 rotates clockwise, and moves to a position where it meshes with the gear 35 when the gear 31 rotates counterclockwise. And gear 34 and gear 35
Are meshed with the fork drive gear 36, and the fork drive gear 36 rotates the fork 37 integrally. In addition,
When the gear 23 rotates counterclockwise, the gear 27 also rotates counterclockwise, and the gear 31 rotates clockwise. When the film transport sprocket 40 rotates counterclockwise to feed the film F to the spool chamber 14 side, the fork 37 and the fork driving gear 36 are driven by the film F being sent through the patrone shaft Pa. Is rotated faster than the speed at which the motor 21 drives the fork drive gear 36 and the fork 37 directly. When the film F is wound around the spool 41 and the film F is being wound by the counterclockwise rotation of the spool 41, the film transport sprocket 40 and the sprocket drive gear 30 are rotated following the film F to be fed. The speed is set to be higher than the speed at which the sprocket drive gear 30 and the film transport sprocket 40 are directly driven by the motor 21.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3B, and FIG.
FIG. 5 is a structural view of the patrone release lever of FIG. 1, and FIG. 6 is a perspective view showing the structure of the fork and fork gear of FIG.

Hereinafter, the configuration will be described with reference to these drawings.

A guide member support shaft 71 is fixed to the cover 7 at the center of the inside of the cover 7, and a guide member 70 is provided rotatably around the guide member support shaft 71. The guide member 70 is urged downward by a spring 72, and in a state where the film cartridge P is housed in the cartridge chamber 6, engages with the cylindrical cartridge shaft Pc on the side that does not protrude. Regulate position with respect to direction. The engagement surface of the guide member 70 with the cartridge shaft is a conical surface, and is configured so that the film cartridge P can be eccentric with respect to the cartridge chamber 6 by the spring 72.

In the center of the lower part of the patrone chamber 6, a fork engaged with the cylindrical patrone shaft Pa on the projecting side of the film patrone P is provided.
37 is provided and protrudes into the patrone chamber 6 from an opening 66 in the lower central part of the patrone chamber 6. As shown in FIG. 6, the fork 37 has a shape that engages with the key Pd in the patrone shaft Pa, and can rotate the patrone P in either forward or reverse direction. The fork 37 is configured to rotate integrally with the fork drive gear 36 and move up and down with respect to the fork drive gear 36. A fork is provided by a spring 38 provided between the fork drive gear 36 and the fork 37.
37 is urged upward and held at a position where it can be engaged with the patrone shaft Pa. In this position, the fitting length between the fork drive gear 36 and the fork 37 is short, and a certain amount of play is provided. Therefore, the fork 37 can be engaged with the fork drive gear 36 in a state of being inclined, whereby the film cartridge P can be driven and rotated eccentrically with respect to the cartridge chamber 6 by the guide member 70 of the lid 7. . With such a configuration, the inner diameter of the patrone chamber 6 can be reduced as compared with a configuration in which the film patrone P is rotated without being eccentric with respect to the patrone chamber 6.

On the other hand, since the fork 37 and the guide member 70 are arranged substantially at the center of the patrone chamber 6, respectively, regardless of the position where the film drawer Pb is located, the cover 7 is closed when the lid 7 is closed.
Smoothly engages with the patrone shaft Pc. Fork 37
When the phase is different from the phase of the key Pd in the patrone shaft Pa, it moves downward against the spring 38 by the patrone shaft Pa. Then, when the forks 37 rotate and their phases match each other, the forks 37 move upward by the springs 38 and engage with the cartridge shafts Pa. The fork drive gear 36 is rotatable around a shaft 91 fixed to a base plate 90 fixed to the camera body 1, and is driven by a motor via the transmission system described above.

The driven sprockets 50 and 51 are adapted to engage with the shorter (the upper side in FIG. 4) perforation Fd of the film F. A driving member 55 that rotates coaxially with the driven sprocket 50 is disposed above the driven sprocket 50, and a spring 57 is disposed between the driving member 55 and the driven sprocket 50. The spring 57 transmits the rotation of the driven sprocket 50 to the driving member 55, and functions such that when a certain or more load is applied to the driving member 55, the driven sprocket 50 and the driving member 55 slide on each other. A pin 55a is provided on an upper portion of the driving member 55, and the pin 55a is mounted on the long hole 52b of the driving lever 52. Drive lever 52 is shaft 5
It is rotatable around 2a and has a pin 52c at its tip. The pin 52c is engaged with the long hole 56a of the cartridge base receiving lever 56. The patrone base receiving lever 56 is guided so as to be movable left and right in FIG. Its tip 56b
Can move in and out of the patrone chamber through the side wall 6g of the patrone chamber 6, and the driving member 55 has a convex portion 55b.
5b abuts on pins 95 and 96 fixed to the camera body 11, and its rotation is regulated. Then, when the driving member 55 rotates clockwise, the projection 55b is brought into contact with the film information reading contact base 53.
Abuts the side surface 53b. Film information reading contact stand 53
Is rotatable around a shaft 53a and is urged counterclockwise by a spring (not shown), but its rotation is regulated by a stopper (not shown). A film information reading contact 54 is attached to the film information reading contact stand 53, and a hole 6d provided in a side wall of the patrone chamber 6 is provided.
Further, the film cartridge enters the patrone chamber, and its tip end portion 54a comes into contact with the film patrone P and passes through a film information reading circuit (see FIG. 10) from a pattern having information such as film sensitivity provided on the film patrone P. Information can be read.

When the driving member 55 rotates in the counterclockwise direction, the driving lever 52 is rotated clockwise through the pin 55a, the patrone base receiving lever 56 is moved to the left in the drawing via the pin 52c, and the tip 56b is moved. It is made to enter the patrone room 6. Further, since the projection 55b of the drive member 55 is separated from the film information reading contact base 53, the film information reading contact base 53 is rotated counterclockwise by the urging force, and the film information reading contact base 53 is rotated. The leading end 54a of the 54 enters the patrone chamber 6 (see the solid line state). On the other hand, when the driving member 55 rotates clockwise, the driving lever 52 rotates counterclockwise via the pin 55a, and the cartridge socket receiving lever 56 via the pin 52c.
Moves to the right in the figure, and its tip 56b is in the patrone room 6.
Exit outside. Further, the projection 55b of the drive member 55 comes into contact with the end face 53b of the film information reading contact stand 53 and rotates it clockwise against the urging force, so that the film information reading contact 54 The tip 54a is moved out of the patrone room 6 (1
(Refer to the dotted line state).

Substrate 58 is fixed below driven sprocket 50. A pattern is formed on the substrate 58, and a contact piece 59 is formed.
(Corresponding to S ₄ in FIG. 10) signal by (2 exists) is read. This signal is formed in a pattern so as to have a pulse shape, and several pulses are generated in one frame.

On the other hand, the driven sprocket 51 is a gear 51a that rotates integrally.
And the gear 51a and the gear 60 are engaged. Gear 6
0 has a protruding portion 60a at its upper part. The patrone holding lever 61 is rotatable around a shaft 61a, and a tip portion 61b of the patrone holding lever 61 can enter and retreat from the patrone chamber through a hole 6f opened in a side wall of the patrone chamber 6. The patrone press lever 61 is urged counterclockwise by a spring (not shown), and abuts against the wall 6e of the hole 6f to restrict its rotation. The cartridge holding lever 61 is at the other end 61c.
Is opposed to the end 62b of the patrone presser release lever 62. The patrone pressing lever 62 is rotatable around a shaft 62a, and is urged clockwise by a spring (not shown). The other side surface 62 of the patrone presser release lever 60
c faces the shaft 63 as shown in FIG. The shaft 63 is vertically movable by fitting into an opening formed in the camera body 1 vertically. A spring 64 is provided below the shaft 63, and is urged upward by the spring 64. When the lid 7 is closed, the upper end surface 63d of the shaft 63 is pushed by the lid 7, and the spring 64 Is charged, and the shaft 63 cannot move upward. At this time, the end side surface 62c of the patrone press release lever 62 is in contact with the thin portion 63a of the shaft 63.

On the other hand, when the lid 7 is opened, the shaft 63 is
Moves upward. At this time, the patrone press release lever 62 is rotated counterclockwise by the tapered portion 63b of the shaft 63 against the urging force. Patrone presser release lever 62
When the is rotated in the counterclockwise direction, its tip 62b abuts against the end 61C of the patrone pressing lever 62, and rotates clockwise against the urging force of the patrone pressing lever. And axis 63
When the thick portion 63c of the cartridge 61 rises to the patrone press release lever 62, the tip 61b of the patrone press lever 61 retreats out of the patrone chamber (see a dashed line state). The force of the spring 64 is large enough to rotate the patrone press lever 61 and the patrone press release lever 62. Lever 65 is shaft 65a
The attraction piece 67 is attached at one end 65e, and the attraction piece 67 is attracted to the permanent magnet of the combination magnet 68. The lever 65 is urged counterclockwise by a spring (not shown), but since the attraction force of the attraction piece 67 and the magnet 68 is stronger,
The attraction piece 67 can maintain the state of being attracted to the magnet. And combination magnet 68
When a current is applied in a pulsed manner to the coil of the electromagnet, the permanent magnet is canceled and the attraction force of the magnet 68 is lost, and the magnet 68 rotates counterclockwise. At this time, the end surface 65d of the lever 65 comes into contact with the tip 62d of the patrone release lever, and rotates the patrone release lever counterclockwise against the urging force, thereby attaching the patrone press lever 61 as described above. The tip 61b is rotated clockwise against the force to retreat the tip 61b out of the patrone chamber 6. Also, the tip 65c of the lever 65
A charge lever 66 is rotatably supported by the shaft and is urged clockwise by a spring 69, but its end side surface 66b abuts on a bent portion 65b of the lever 65 to restrict its rotation. . On the other hand, the other end 66a is located at a position facing the protruding portion 60a of the gear 60,
When the 65 is rotated counterclockwise, the tip end 66a of the charge lever 66 enters the rotation locus of the protrusion 60a of the gear 60. When the gear 60 rotates counterclockwise, the protruding portion 60a abuts against and pushes the tip portion 66a of the charge lever 66, and rotates clockwise about the shaft 65a integrally with the lever 65 to rotate the suction piece 6
7 and the magnet 68 are attracted. When the gear 60 rotates clockwise, the charge lever 66 rotates counterclockwise against the spring 65 around the shaft 65c even when the protrusion 60a contacts the tip end 66a of the charge lever 66. The lever 65 does not move. Then, when the protruding portion 60a separates from the charge lever 66, the charge lever 66 is again rotated by the spring 69 until the end face 66b comes into contact with the bent portion 65b of the lever 65, and returns to the original state. When the magnet 68 on the attraction piece 67 is attracted, if the lid 7 is closed, the patrone press release lever 62 rotates clockwise until it comes into contact with the small diameter portion 63a of the shaft 63, and the patrone press lever 61 also moves. It rotates counterclockwise by the urging force, and its tip 61b
Enters the patrone room 6.

7A and 7B are explanatory views of an image frame collision prevention mechanism according to an embodiment of the present invention, and FIG. 8 is a diagram of FIG. 7A.
VIII-VIII sectional view, FIG. 9 is IX-IX sectional view of FIG. 7A.

Hereinafter, the operation of the mechanism will be described with reference to the drawings.

When the film F is sent to the spool chamber 14 by the film transport sprocket 40, the film F must pass through the film exposure section 13 on the way. The front end Fa of the film F is narrow,
Attempts to curl down to the lens side. When such curling exists, the front end Fa of the film F
Collides with the surface 13a on the spool chamber 14 side forming an image frame,
The film F cannot be sent any further. Therefore, a means for preventing this collision is necessary. Specifically, a lever 75 made of a thin plate that is rotatable around an axis 75a is disposed on the right side of the film exposure unit 13, and the lever 75 is urged clockwise by a spring 76. A pin 97 is fixed to the body to secure the urging force of the spring 76. The end of the film F is regulated by the contact surface 80, and the rail surface 81 is slightly higher than the main surface 100. The height of the pressure plate contact surface 80 is set to be slightly larger than the thickness of the film F than the height of the rail surface 81.
The lever 75 has an end surface 75c on the right end surface 8 of the upper rail surface 81.
The rotation is restricted by abutting on 1a. Where lever 75
Has a portion 75b shaped to obliquely cover the lower right side of the picture frame, and the shape of the end portion 75e is cut into an edge shape (see FIG. 9). The front end Fa of the film F first comes into contact with the slanted surface 75b of the lever 75 to prevent curling toward the lens. That is, the inclined surfaces 75b and 7
The film is lifted by 5e, is mounted on the lever 75 without colliding with the surface 13a on the spool chamber 14 side forming the image frame, and is fed to the spool chamber 14.

Then, as shown in FIG. 7B, the portion Fb where the narrow portion of the film F passes and the width increases becomes the bent portion 75 of the lever 75.
When abutting on d, the lever 75 is rotated counterclockwise by the film F. At this time, the inclined surface 75b of the lever 75
Is completely retracted from the film exposure unit 13, and this state is maintained by the passage of the film F, so that there is no trouble in photographing through the exposure unit.

FIG. 10 is a control circuit diagram for controlling a camera mechanism according to an embodiment of the present invention.

 Hereinafter, the configuration will be described with reference to the drawings.

Operation control of the entire camera is controlled by the microcomputer COM
The following circuits and devices are connected to the microcomputer COM.

That is, a film information reading circuit FD for reading film sensitivity information and the like of the film cartridge P, a photometric circuit ML for measuring subject brightness, a distance measuring device for measuring the distance to the subject, and a photographic lens 2 based on the distance measuring device. Auto focus control circuit AF, which consists of a lens drive device that drives
A display device DS for displaying various states of the camera CA, a flash device FC including a xenon tube and emitting flash light,
Exposure control device E that drives aperture and shutter during shooting
C, motor control circuit MD for controlling motor 21, magnet 6
8 (Tr, R1, R2), a power supply battery E, and a reset circuit (R
_3, C), the crystal oscillator X and a switch S for providing a clock signal to the microcomputer COM, S _s, is S ₁ to S _7. The switch S is a switch for detecting whether or not the film cartridge P is present in the cartridge chamber 6;
As shown in FIG. 4, when a film cartridge is present, the pi 17 is pushed by the film cartridge P, and the contact pieces 18, 19 are brought into contact and turned on. When the film cartridge P does not exist, the pin 17 is pushed upward by the contact piece 18, and the contact pieces 18 and 19 are separated from each other and turned off. Switch S _s is a lock switch described above, ON state lid 7 is in the locked state, an OFF state when not locked.
Switch S ₁ is closed by depression of the first stage of the shutter release button of the two-stage depressible switch,
Switch S ₂ is a close switch by depression of the second stage that further pushed from the first stage of the depressed state of the shirt data release button. Switch S ₃ is a film detection switch provided at a position outlet 6a near the cartridge chamber 6, as shown in FIG. 1, a switch to determine whether the film F has come out from the film feed opening 6a. If the film F comes out, the pin 47 is pushed by the film F, the contact piece 48 and 49 switch S ₃ in contact becomes ON. If the film F is not coming out, the contact piece 48 and 49 is in a state separated from each other, the switch S ₃ is turned OFF. Switch S ₄ is the movement of the film F as described above, ON, a switch for generating a pulse repeatedly OFF, the generating a predetermined number of pulses when the film F is moved by one frame. Switch S ₅ is a switch constituted by the roller 42a and the spool 41 rotatably provided on the tip of the guide lever 42 described above, the roller 42a and the guide lever 42 and the spool 4
1 is made of a conductive material. If there is no film F in the meantime, the spool 41 and the guide lever 42 are in contact with each other, and are in the ON state. Thus, the switch S ₅ film F becomes possible to determine whether reached spool 41. Switch S ₆ is photographer, without taking the film to the last frame, a switch to be operated when you want rewinding the way, corresponds to the switch SW of FIG. 2, the operation time of the ON state. Switch S ₇ is after the shooting, a switch for use when leaving a film leader tongue when rewinding the film.

Hereinafter, the operation of the camera according to one embodiment of the present invention will be described.

A. Initial setting operation The operation of loading the film cartridge into the camera will be described.

With the lid 7 of the patrone chamber 6 open as shown in FIG. 2, the film patrone P is moved to the patrone shaft Pa on the projecting side.
Is first loaded into the patrone room. At this time, the film outlet Pb of the film cartridge P may be anywhere. When the film cartridge P is loaded, as will be described later, the distal end 54 of the film information reading contact 54
a, the leading end 56b of the cartridge chamber base receiving lever 56 and the leading end 61b of the cartridge holding lever 61 are out of the cartridge chamber 6, so that they do not hinder the loading of the film cartridge P. By the way, in this camera CA, a film can be loaded without touching the film cartridge P by a method different from the above method. The loading operation is shown in FIGS. 11A to 11C.
As shown in FIG. 11A, the film cartridge P is generally arranged such that the cartridge shaft Pa on the projecting side is located on the lid 10a side.
It is stored in the patrone case 10. In loading the film, the lid 7 of the camera CA is opened, and the lid 10a of the patrone case 10 is removed. As shown in FIG. 11B, the patrone case 10 is turned over and positioned above the opening of the patrone chamber 6. As a result, the film cartridge P is dropped into the cartridge chamber 6 as shown in FIG. 11C. In any of these methods, when the lid 7 is closed, the film cartridge P is stored in the cartridge chamber 6.

Here, referring to FIG. 4, if the phase of the fork 37 and the key Pd of the patrone shaft Pa are different at this time, the fork 37 is moved downward against the spring 38 by the patrone shaft Pa. The guide member 70 located substantially at the center of the lid 7 has a conical engagement portion with the patrone shaft Pc, so that the film drawer Pb of the film patrone P is smoothly connected to the patrone shaft Pc at any position. Engage.

By the way, when the film cartridge P is inserted upside down (that is, the film cartridge P is inserted into the cartridge chamber from the unexposed cartridge axis Pc side), in the camera in this embodiment, the unexposed cartridge axis Pa becomes an obstacle. Then, the lid 7 does not close. Therefore, this state is immediately known to the photographer, and no further abnormalities occur. When the lid 7 is closed, the pin 17 in the lower part of the patrone chamber 6 is pushed by the film patrone P,
Switches 18 and 19 make contact and switch S is closed. When the rotating the lock lever 8 to the locked position, the switch S _s is closed. Therefore, as shown in FIG.
And an OR circuit OR1 which is connected to the S _s outputs an L level signal. Then, the one-shot pulse circuit OS connected to the OR circuit OR1 outputs an H level signal for a predetermined time. As a result, the interrupt terminal INT1 of the microcomputer COM is connected to the inverter INV connected to the circuit OS.
Is supplied with an L level signal, and an interrupt operation of INT1 is performed.

B. Initial Winding Operation Hereinafter, the initial winding operation will be described with reference to the flowchart of FIG.

First at step # 201, prohibits the interruption of other operations, is rotated forward the motor 21 at step # 202, step # 203 and starts to set the t ₁ hour timer. When the motor 21 is rotated forward in step # 202,
As shown in FIG. 3A, the gear 23 and the gear 27 are rotated counterclockwise via the reduction gear 22. Therefore, gear 27
The planetary gear 25 is engaged with the spool drive gear 26, the planetary gear 29 is engaged with the sprocket drive gear 30, the planetary gear 33 is engaged with the gear 34, and the spool drive gear 26, the sprocket drive gear 30 rotates counterclockwise. Since the gear 34 rotates clockwise, the fork drive gear 36 rotates counterclockwise. Therefore, the spool 41, the film transport sprocket 40,
All the forks 37 rotate counterclockwise. Fork 37
When the is rotated in the counterclockwise direction, the fork 37 is raised by the spring 38 when the phase of the patrone shaft Pc and the key Pd match, and engages with the patrone shaft Pc. As a result, the film shaft F of the cartridge shaft Pc is rotated in the loosening direction. The film F has a frictional resistance between the film drawer Pb of the film cartridge P and telem in the film drawer Pb.
Due to the rotation of the patrone shaft Pc, the film F spreads in the axial direction in the film patrone P and comes into pressure contact with the inner wall of the inside of the film patrone P. In this state, the patrone shaft Pc, the film F, and the film patrone P rotate integrally. The front end Fa of the film F elastically slidably contacts the inner wall of the elastic patrone chamber 6 and rotates, and is guided by the guide surface 6C shown in FIG. 1 to reach the film feeding resistance 6a (see FIG. 3B). .

On the other hand, it is determined in step # 204 whether the switch S3 is on or off. If it is off, the process proceeds to step # 205, in which it is determined whether or not the timer started in step # 203 has expired. If not, return to step # 204 and repeat. When the film F comes out from the film feed opening 6a, the switch S ₃ is turned on, wherein step #
Proceed to 207. If t in ₁ hour, when the switch S ₃ is not turned on, the process proceeds to step # 247. t ₁ hour is normal motor 2
After 1 begins to rotate, is set sufficiently longer than the switch S ₃ is turned on. Therefore, within t ₁ hour
If S ₃ is turned on, the film F there is some abnormality
Does not come out of the film outlet 6a. Therefore, in this case, the motor 2
1 is stopped, and a warning of an abnormality is displayed on the display device DS in step # 248. Then, other operations are permitted to be interrupted in step # 249, and the operation enters the standby state in step # 250.

Switch when film F comes out from film outlet 6a
If S ₃ is turned on, the motor 21 continues to rotate. In step # 207 to stop the t ₁ hour timer is set to 3 in the counter at step # 208. And to start to set the t _2-hour timer at step # 209.
The film tip Fa will eventually become a film transport sprocket.
40 and the film transport sprocket 40
The film F is engaged with the sprocket chamber 14 by the film transport sprocket 40.
Sent to the side. Since the leading end of the film F has a small width, the driven sprockets 50 and 51 do not rotate for a while even if the film F comes out of the film outlet 6a. However, when the film F is fed, the driven sprockets 50 and 51 are engaged with the perforations Fd of the film F, and the driven sprocket 50 is rotated counterclockwise and the driven sprocket 51 is rotated clockwise. Due to the rotation of the driven sprocket 50, the substrate 58 and the contact piece 59
Switch S ₄ is repeated on and off, for generating a predetermined pulse. The counting of this pulse is started in step # 210. At step # 211 the switch S ₅ is determined on or off. That is, the leading end Fa of the film F is
Is reached, it is determined whether the roller 42a of the film guide lever 42 has been reached. Step # switch S ₅ at 211
Is ON, the process proceeds to Step # 212, and Step # 209
It determines whether or not the start the t _2-hour timer has ended in, and if it has not been completed, return repeated this to the step # 211.

On the other hand, as shown in FIG.
The counterclockwise rotation of the drive member 55 via the spring 57
Also rotates counterclockwise. And, via the pin 55a,
The drive lever 52 is rotated clockwise to cause the tip 56b of the cartridge base receiving lever 56 to enter the inside of the cartridge chamber 6 via the pin 52C. The projection 55b of the driving member 55 abuts on a pin 95 fixed to the camera body 1, and the rotation thereof is stopped. Therefore, the movement of the drive lever 52 and the cartridge base receiving lever 56 is also stopped. Even when the driving member 55 is stopped from rotating, the driven sprocket 50 slips and is rotatable by the spring 57, so that the driven sprocket 50 continues to rotate by passing the film F. As shown in FIG. 1, the tip 56b of the patrone base receiving lever 56 abuts in the immediate vicinity of the film pull-out portion Pb, and even if the film F is pulled by the film transport sprocket 40 or the spool 41, the film feed port 6a It serves to hold the patrone P by preventing it from moving to the other side. Due to the counterclockwise rotation of the driving member 55, the protrusion 55b
The film information reading contact 53 whose rotation has been restricted by the above is rotated counterclockwise by a spring (not shown) from the state shown by the one-dot chain line in the figure, and the film information reading contact 54 is also integrated. And its tip 54a is in the patrone P
Abut. Meanwhile, in the patrone P, the film F exits from the film outlet 6a and the film transport sprocket 40
Even if it begins to be sent by Patrone P for a while
The rotation continues until the film pull-out portion Pb comes near the film outlet 6a (the position shown in FIG. 1). In parallel with this operation, the patrone base receiving lever 56 and the film information reading contact piece 54 have entered the patrone chamber, but the front end Fa of the film F has already reached the film feeding port.
Since it comes out from 6a, it no longer hinders film feeding. If the patrone base receiving lever 56 and the film information reading contact piece 54 enter the patrone chamber 6 before the leading end Fa of the film F comes out of the film outlet 6a, the leading end Fa of the film F is There is a possibility that it may be caught and unable to rotate. Therefore, the film F is set to operate only when the front end Fa of the film F comes out of the film outlet 6a. Note that the length of the film F protruding from the patrone P is usually 1 wrapped around the patrone P.
The length is less than the circumference. Therefore, film F
When the leading end Fa of the film P comes out of the film feed port 6a, the film pull-out portion Pb of the film P thereafter reaches the state shown in FIG.
Does not come into contact with the cartridge base receiving lever 56, and even if the film information reading contact piece 54 comes into contact with the film pull-out portion Pb, it can be rotated clockwise against the urging force and escaped. . As a result, the rotation of the patrone P is not affected. When the film drawer Pb of the cartridge P reaches the state shown in FIG. 1, the cartridge P stops rotating. At this time, the fork 37 tries to loosen the film F, but the speed at which the film transport sprocket 40 feeds the film F is faster than the speed at which the film F is loosened by the fork 37. The winding looses gradually and eventually disappears. Then, the film F wound around the patrone shaft is forcibly released, but as shown in FIG. 3A, the gear 34 meshing with the fork gear 36 is
The speed at which the film F wound around the patrone shaft is forcibly released is set to be faster than the speed at which the film F is rotated by 33. Therefore, the planetary gear 33 is blown off without meshing with the gear 34, and can absorb this speed difference. When the cartridge P is in the state shown in FIG.
a comes in contact with the pattern position having the information of the film cartridge P.

On the other hand, the gear 60 meshing with the gear 51a rotates counterclockwise due to the clockwise rotation of the driven sprocket 51.
By the way, as will be described later, at the end of rewinding, there are two cases: a case where the film front edge is left as in the initial state, and a case where the film front edge is completely wound into the film cartridge P. There is a street. In the former case, the magnet 68 is energized, and the lever 65 and the charge lever 66 are rotated counterclockwise (in the dashed line state in FIG. 1). The release lever 62 is also rotated in the counterclockwise direction, and the leading end 61b of the patrone pressing lever 61 is in a state of being out of the patrone chamber 6 (in a dashed line). In the latter case, the magnet 68 is not energized, and the attracting piece 67 remains attracted to the magnet 68. Therefore, the lever 65 and the charge lever 66 remain in the solid line state in FIG. When the lid 7 is opened for film exchange, in the former case, the tip 61b of the patrone holding lever 61 is already in the patrone chamber 6
Comes out of. In the latter case, the shaft 63 is pushed upward by the spring 64 as shown in FIG.
Thus, the patrone release lever 62 is rotated counterclockwise so that the tip 61b of the patrone holding lever 61 is moved outward from the patrone chamber 6. As a result, the replacement of the film cartridge P is not hindered. Therefore, if the film leading edge is left at the previous rewinding, the lever 65 and the charge lever
66 is in the dashed line state in FIG. 1, so that when the gear 60 rotates counterclockwise, the protrusion 60 provided on the upper part of the gear 60 is rotated.
The tip part 66a of the charge lever 66 is pushed by a, the charge lever 66 and the lever 65 are integrally rotated clockwise around the shaft 65a, and are attracted to the attracting piece 67 and the magnet 68 at the other end, and the solid line in the figure To As a result, since the lid 7 is closed, the shaft 63 is lowered against the sprig 64, and the patrone presser release lever 62 can be rotated clockwise by the urging force. The patrone press lever 61 rotates counterclockwise, and its tip 61b enters the patrone chamber 6. At this time, even if the film drawer Pb of the patrone P is rotating, the urging force of the patrone pressing lever 61 is made to be a very small force, so that it rotates clockwise against this urging force and escapes. Therefore, the rotation of the patrone P is not hindered. When the leading edge of the film is completely wound into the film cartridge P during the previous rewinding, the cover 7 is closed because the lever 65 and the charge lever 66 are already in the solid line state in FIG. After that, the tip 61b of the patrone pressing lever 61 enters the patrone chamber 6. The vertical position of the patrone presser lever 61 is
The film F is disposed above the position of the narrow width portion at the leading end of the film F. Therefore, the film F does not hit the front end Fa, and does not hinder the rotation of the cartridge P as described above. Therefore, there is no problem even if the tip 61b of the patrone pressing lever 61 enters the patrone chamber 6 when the lid 7 is closed.

Even if the leading edge of the film is completely wound during the previous rewinding, the magnet 68 is energized in conjunction with the lock switch when the film is turned off after the winding is completed or when the lid 7 is unlocked, and the patrone presser is pressed. Tip 61b of lever 61
Out of the patrone 6.

7A, the leading end Fa of the film F comes into contact with the film exposing section 13 and the oblique surface 75b of the lever 75. As shown in FIG. Even if the film F is curling toward the photographic lens 2, the film F is raised by the inclined surface 75 b of the lever 75, rides on the lever 75, and passes smoothly. No.
As shown in FIG. 7B, when the film F is further fed, the bent portion 75d of the lever 75 is pushed by the portion Fb where the width of the film F becomes large, and the lever 75 is rotated counterclockwise, and the lever 75 is inclined. The surface 75b is completely retracted from the film exposure unit 13, and this state is maintained. The front end Fa of the film F passes through the film exposure unit 13 and is guided by the film guide lever 42,
It is led to the spool 41. The tip Fa of the film F is a roller
Once in between 42a and the spool 41, the switch S ₅ is turned off. Therefore, the process proceeds to step # 215 from step # 211, it stops the timer t ₂ hours. If not become switches S ₅ to t within ₂ hours off and proceeds to step # 231 in step # 212, the motor 21 is stopped. t ₂
Time is usually switch S ₃ from ON, switch S ₅ is set to be sufficient time to off.
Therefore, unless off switch S ₅ in If t within ₂ hours, or (especially in the film exposure section 13) the film F is bought hooking in the middle or, it is contemplated that either a failure of the drive system. When the film F is bought hooking on the way, by performing the midway (far switch S ₃ is turned off) wound again winding operation is returned again film F, the following can be passed smoothly without caught There is. For this reason, the rewinding operation is repeated several times. To explain its operation,
After the motor 21 is stopped once in step # 231, 1 is subtracted from the count value 3 set in step # 208 in step # 232, and power is supplied to the motor 21 in the reverse direction in step # 233. . Then, as will be described later, the film F is wound in the patrone P and moves in the opposite direction as before. In step # 234 to start to set the timer t ₄ h, the switch S ₃ at step # 235 is found whether or not off. It determines whether t ₄ hours timer expires at step # 236 if is on, when not completed repeating this process returns to step # 235. t ₄ hours is usually the film F is set to be sufficiently longer than the time required to be rewound to off Forward switch S ₃ from (just before the switch S ₅ is turned off) approaching the spool 4. Thus, if in the case where the film F during winding as described above was not突掛, switch S ₃ by rewinding of the film is turned off in t ₄ h, step # 238
Timer proceed t ₄ hours is stop. Even if the film F at the time of failure or winding of the drive system is bought突掛when winding if the switch S ₃ in t ₄ hours when the driving system at the time of rewinding has failed does not become off, step # 25
Proceed to 5 to stop the motor 21. Then, in step # 256, a failure warning display (see DS in FIG. 1) is performed to notify the abnormality, and the photographing operation and the like are disabled until the failure is recovered. on the other hand,
Switch S ₃ is turned off at step # 235, step # 238
In step # 239, it is determined whether the value is 0 by subtracting 1 from the counter value in step # 232. If it is not 0, the process proceeds to step # 240, and after stopping the motor 21, the motor 21 is rotated forward again in step # 241, and the film is advanced in the winding direction. Returning to step # 209, the operation is repeated until the switch S ₅ is turned off. In this case, the number of repetitions is three, which is set in the maximum step # 208, but is not limited to this number. Then, if be repeated three times not become the S ₅ off with, the counter value in step # 239 0
And proceeds to step # 245. Then, power is supplied to the magnet 68, and the rewinding operation is continued. The energization of the magnet 68 will be described later, but this is for ending the rewinding while leaving the film front edge tongue. After waiting t ₅ h at Step # 246 is followed, the motor 21 is stopped at step # 247, a warning indicating that the loading fails at step # 248. Further, interruption of other operations is permitted in step # 249, and the operation enters the standby state in step # 250.

Switch S ₅ is turned off, and the process proceeds to step # 215 from step # 211, and set a timer t ₃ hours to start at step # 216. Step # pulse number of the switch S ₄ at 217 it is determined whether it is a predetermined number, the process proceeds to step # 218 if not a predetermined number. Therefore determines whether the time of timer t ₃ has been finished, the flow returns to step # 217 if the termination, repeating this. Pulses a predetermined number of switch S ₄ is 1 film unexposed portion as an initial winding operation
It is set to the amount that must be sent to the frame, t ₃
Time is, from a state in which the switch S ₅ is turned off, is set to a sufficiently long time to send up to film the first frame. If it is determined in step # 218 that the timer has expired, it means that the film is too short to reach the first frame or that the drive system has failed. Therefore, the process proceeds to step # 261 and the motor 21
Is stopped, the process proceeds to a rewind routine described later. When the pulse of the switch S ₄ reaches a predetermined number, the process proceeds to step # 221, to stop the timer t ₃ hours, step # 222
To stop the motor 21. At step # 223, the information of the film cartridge P is read by the film information reading contact 54 via the film information reading circuit FD. Step #
In step 225, the information value is displayed, and the fact that the initial winding operation is successful is displayed on the display device DS.
Then, another interrupt operation is permitted, and in step # 226, the standby state is established, and the initial winding operation ends.

By the way, the film F is soon wound around the spool 41 and fastened, and the film F is fed by the rotation of the spool 41. At this time, the speed of the film F is higher than the speed fed by the film transport sprocket 40. The planetary gear 29 shown in FIG. 3A cannot mesh with the sprocket drive gear 30, so that the speed difference can be absorbed here.

C. Photographing and Winding Operation The operation will be described below with reference to the flowchart in FIG.

By depressing the first stage of the shutter release button, when the switch S ₁ is closed, an interrupt signal to the interrupt terminal INT2, as shown in FIG. 10 are input. Then, an interrupt of INT2 is executed, and other interrupts are prohibited in step # 301. Next, in step # 302, the luminance of the subject is measured by the photometric circuit ML, and in step # 303, the distance of the subject is measured by the distance measuring device of the autofocus control circuit AF. Next, in step # 305, it is determined whether or not to emit a flash and the exposure control characters are calculated based on the measurement results in steps # 302 and # 303 and the film information obtained in the above-described initial winding operation. Then, by depressing the second stage of the shutter release button in step # 308, whether the switch S ₂ is closed is determined. If it is determined that the shutter release button has not been pressed down to the second step, the process proceeds to step # 330. Therefore, it is determined whether or not the shutter release button has been pressed down to the first stage. If it is determined that the shutter release button has been pressed down to the first stage, the process returns to step # 302. That is, in this case, it is determined that the camera is in the shooting preparation state, and the operation is repeated until it is determined in step # 308 that the shutter release button has been pressed down to the second stage. If it is determined in step # 330 that the shutter release button has not been pressed down to the first step, it is determined that the operation has been stopped. Then, the process proceeds to step # 331 to permit interruption of another operation, and then the photographing operation is stopped at step # 332. If it is determined in step # 308 that the shutter release button has been pressed down to the second step, the flow advances to step # 310 to drive the photographing lens 2 to a position corresponding to the subject distance via the auto focus control circuit AF. . Then step # 311
It is determined whether or not the driving of the taking lens 2 has been completed. If it is determined that the driving of the taking lens 2 has not been completed, the process waits until the driving of the driving lens 1 is completed. If it is determined that the driving of the photographing lens 2 has been completed, the process proceeds to step # 313 to cause the shutter 12 to perform an exposure operation (photographing operation) via the exposure control device EC.
When necessary, the flash device FC is operated to emit a flash. After the exposure operation, the motor 21 is rotated forward in step # 314, and the film F is wound by the spool 41 as described in the initial winding operation. At this time, the shutter 12 is charged by a shutter charge mechanism (not shown). Step # 315 is set a timer t ₆ hours and started at, counts the number of pulses of the switch S ₄ at step # 317. Then step #
The number of pulses of the switch S ₄ at 320 determines whether it is a predetermined number. If it is not the predetermined number, proceed to step # 321,
It is determined whether the timer has expired. If the timer has not expired, the flow returns to step # 317 to repeat this operation. The predetermined number of pulses of the switch S ₄ corresponds to one frame sent amount of the film F, t ₆ hours, usually the film F
Is set to be sufficiently longer than the time required to send one frame. When the number of pulses of the switch S ₄ at step # 320 is determined to become a predetermined number, the process proceeds to step # 322. Therefore, the timer is stopped, the motor 21 is stopped in step # 323, the number of film frames is displayed in step # 324, interruption of other operations is permitted in step # 325, and the standby is performed in # 326. State. t If one frame is not fed within ₆ hours, it means that the film F is in a stretched state at the last frame and cannot be wound any more, or it is a malfunction of the drive system. The process proceeds from step # 321 to step # 335 to stop the motor 21, and then executes a rewind routine in step # 336.

D. Rewind Operation This operation will be described below with reference to the flowchart of FIG.

When the photographer operates to rewind the film halfway without taking the last frame,
When S ₆ is closed, as shown in Figure 10, the interrupt terminal
An interrupt signal is input to INT3, and the INT3 interrupt is executed.
Alternatively, as described above, when the film is fed up to the last frame at the time of winding and is stretched there, a rewind routine is executed. In step # 401, interruption of other operations is prohibited, and in step # 402, the motor 21 is rotated in the reverse direction. When the motor 21 rotates in the reverse direction, as shown in FIG. 3A,
The gears 23 and 27 rotate clockwise through the reduction gear 22, and the levers 24 and 28 also rotate clockwise around the shafts 23a and 27a, respectively. It moves to a position where it does not engage with 26 and the sprocket drive gear 30, and releases power transmission to the spool 41 and the film transport sprocket 40. Gear 27
As the gear 31 rotates counterclockwise by the clockwise rotation of, the lever 32 rotates counterclockwise, the planetary gear 33 engages with the gear 35, and rotates the fork driving gear 36 clockwise. . Then, the patrone shaft Pa is rotated clockwise by the fork 37. At this time, the film cartridge P also tries to rotate in the clockwise direction, but the film drawer Pb comes into contact with the tip 61b of the cartridge holding lever 61. At this time,
Since the force received by the patrone press lever 61 is exactly in the direction of the shaft 61a, the patrone press lever 61 cannot rotate. As a result, the film cartridge P cannot rotate. Therefore, the film F can be rewound to the patrone P by rotating the patrone shaft Pa clockwise. Conversely, when the patrone pressing lever 61 is retracted outside the patrone chamber 6, the film diameter wound around the patrone shaft, the film frictional force of the film draw-out portion Pb of the patrone P, and the frictional force of the film F are increased. In most cases, the patrone P rotates, and the film F is not wound around the patrone P, so that the film does not enter the patrone P. In order to prevent the film from being wound, a patrone pressing lever 61 is provided. When the film F is rewound, the driven sprocket 50 is rotated clockwise and the driven sprocket 51 is rotated counterclockwise. When the driven sprocket 50 rotates clockwise, as shown in FIG. 1 and FIG.
55 rotates clockwise through a spring 57, and the pin 55a
, The drive lever 52 is rotated counterclockwise. Then, the patrone base receiving lever 56 is moved to the first position via the pin 52C.
Move it to the right in the figure, and touch the tip of the patrone base receiving lever 56.
56b is evacuated out of the patrone room 6. Drive member 55
The clockwise rotation causes the protrusion 55b of the driving member 55 to abut against and push the end face 53b of the film information reading contact piece base 53, and to move the film information reading piece 53 clockwise against the urging force. To the end 54a of the film information reading contact 54.
To the outside of the patrone room 6. At this time, the biasing force of the spring 57 is set so that the driven sprocket 50 and the driving member 55 do not slip. When the protrusion 55b of the driving member 55 comes into contact with the pin 96 fixed to the body, the rotation of the driving member 55 stops, and at this time, the driven sprocket 55 driven by the spring 57 slides. On the other hand, when the driven sprocket 51 rotates counterclockwise, the gear 60 rotates clockwise via the gear 51a. Even if the protrusion 60a of the gear 60 comes into contact with the tip 66a of the charge lever 66 and pushes it, the charge lever 66 is pivoted against the spool 69
It just rotates counterclockwise around 65c and escapes,
The lever 65 does not move. In conjunction with the rewinding of the film F, the sprocket 40 for transporting the film and the spool 41 are also rotated clockwise in FIG. 3A. However, since the planetary gears 29 and 25 are retracted to positions where they are not engaged with the sprocket drive gear 30 and the sprocket drive gear 26, rotation does not become a hindrance.
Then, the film F is smoothly rewound. Step #
When the motor 21 is rotated in the reverse direction at 402, t ₇ at step # 403.
The time timer is set and started. Step # 40
4 in detecting whether or not the above-mentioned film sensing switch S ₃ is turned off, if it is on the flow proceeds to step # 405 determines whether the timer has ended. If not, the process returns to step # 404 and repeats this. t ₇ hours is usually the film F is rewound switch S ₃ is set to a sufficiently longer time than the time required for rewinding until loco is turned off. If therefore the switch S ₃ to t within ₇ hours does not become off, it believed that there is some abnormality, the process proceeds to step # 421. Then, the motor 21 is stopped.
At 22, a failure warning is displayed to notify the abnormality and disable other operations until the failure is recovered. At step # 404 if the switch S ₃ is determined to have been turned off, to stop the timer proceeds to step # 407, it is determined whether to stop, leaving the film leader Vero step # 408 . This is what the photographer is determined by detecting that the press and separate operation button (S ₇₎ when you wanted to take out, leaving a film tip tongue. If you decide to leave the film leading edge,
Proceeding to step # 411, the magnet 68 is energized. At this time, as shown in FIG. 1, the attraction force between the attraction piece 67 attached to the end of the lever 65 and the magnet 68 disappears,
The lever 65 rotates counterclockwise around the shaft 65a by the urging force. Then, the end face 65d of the lever 65 pushes the distal end portion 62b of the patrone press release lever 62, and rotates the patrone press release lever 62 counterclockwise around the shaft 62a against the urging force. Patrone presser release lever 62
Of the patrone presser lever 61 presses the end face 61c of the patrone presser lever 61, and pushes the patrone presser lever 61 against the urging force of the shaft 61.
Rotate clockwise around a. Therefore, the leading end 61b of the patrone holding lever 61 retreats outside the patrone chamber 6. Therefore, at this time, there is nothing to prevent the rotation of the patrone P, the patrone P itself rotates clockwise, and the film F is not further wound into the patrone P from the moment when the patrone pressing lever 61 is retracted. With the rotation of the drawer Pb of P, the film P is drawn into the patrone chamber 6, and the film front end Fa enters the patrone chamber 6 soon. On the other hand, waiting t ₅ h at Step # 412, it stops the motor 21 at step # 416, which energizing of the magnet 68, to the film tip Fa enters the fully cartridge chamber 6 This is because time is required. t After ₅ hours, the film tip Fa
Is in the patrone chamber 6 and is in a state similar to the state where the patrone P is inserted when the film is loaded.

However, if it is determined in step # 408 that the leading edge of the film is not left, the process proceeds to step # 413, and t ₈
After waiting for a time, the process proceeds to step # 416, and the motor 21 stops. While in this case to fix the cartridge P, it may be Makikome the film leader portion Fa completely patrone P, surely the film tip Fa to t within ₈ hours will be caught in the patrone P. Subsequently, at step # 417, the fact that the rewinding operation has been completed is displayed, and the photographer is instructed to take out the film cartridge P. And step # 41
In step 8, interruption of other operations is permitted, and in step # 419, the apparatus enters the standby state.

In the above embodiment, the magnet is used to stop the rewinding while the tongue is left. However, it is necessary to leave the tongue without using the magnet to reduce the cost and space. Is also possible. The motor 21 is stopped immediately when the switch S ₃ is turned on in this case,
In this state, it indicates that the rewinding has been completed, and waits for the lid 7 to be opened. In order to determine whether or not the lid 7 has been opened, a switch interlocking with the lid 7 is required. For example, as shown in another embodiment of FIG. A switch consisting of a contact piece 110 and a contact piece 111 that is turned on when the shaft 63 is lowered by
It may be provided S _8. If the switch S ₈ is turned off, it is determined that the lid 7 is opened, reverses again the motor 21 a predetermined time in this case. Then, as the lid 7 is opened, the tip 61b of the patrone pressing lever 61 as described above is opened.
Has retreated outside the patrone room 6, so the patrone P
Rotates counterclockwise, and it is possible to leave a tongue.

[Effects of the Invention] In the invention according to the first aspect of the present invention, it is detected whether or not the film leading portion is normally delivered by the film delivering means, and it is detected that the film leading portion is not very delivered. If so, the film is rewound. Therefore, if the film leading end does not come out of the outlet properly due to some abnormality, the film is rewound.
Film damage can be prevented.

In the invention according to the second aspect, after the film is rewound, the film leading end is sent out again.
If the film leading end is not sent from the outlet due to some abnormality, the film is rewound once, but after the rewinding, the film leading end is sent out again.
The probability of film loading failure can be reduced.

[Brief description of the drawings]

1 to 14 all show one embodiment of the present invention. FIG. 1 is a cross-sectional view showing details around the patrone chamber, FIG. 2 is a perspective view showing the configuration of the entire camera body, and FIG.
FIGS. 3A to 3C are schematic views showing the film loading operation, FIG. 4 is a longitudinal sectional view showing details of the periphery of the patrone chamber, FIG. 5 is a view showing the relationship between the patrone press release lever and the charge shaft, and FIG. FIG. 7 is a perspective view showing the structure of a fork and a fork gear, FIGS. 7A and 7B are explanatory views of an image frame collision prevention mechanism, FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 7A, and FIG. IX-IX sectional view of FIG. 7A, FIG. 10 is a control circuit diagram showing a control configuration of each function, FIGS. 11A to 11C are schematic diagrams showing a film cartridge loading operation, and FIG. 12 is an initial winding operation. FIG. 13 is a flowchart showing a photographing and winding operation, and FIG. 14 is a flowchart showing a rewinding operation. FIG. 15 is a diagram in which a switch S ₈ to the charge axis according to another embodiment of the present invention. In the figure, 6 is a patrone chamber, 6a is a film feeding port,
14 is a spool chamber, 21 is a motor, 26 is a planetary gear, 30 is a sprocket drive gear, 36 is a fork drive gear, 40 is a sprocket, 41 is a spool, 42 is a guide lever, and 47 is a switch.
Armature terminals of the S _3, 48 and 49 constituting the switch S _3, F
Is a film and P is a patrone. In the drawings, the same reference numerals indicate the same or corresponding parts.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ikushi Nakamura 2-30 Azuchicho, Higashi-ku, Osaka-shi, Osaka Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Katsuaki Chigasaki Azuchi-cho, Higashi-ku, Osaka-shi, Osaka 2-30, Osaka International Building Minolta Camera Co., Ltd. (72) Kanji Tsuji 2-30-30 Azuchicho, Higashi-ku, Osaka City, Osaka Prefecture Osaka International Building Minolta Camera Co., Ltd. (56) References JP-A-2-69732 (JP, A)

Claims (2)

(57) [Claims] 1. A camera capable of loading a film container into a film storage chamber and feeding the film front end from a delivery port toward a spool chamber through a film in the film storage chamber. Film sending means for sending out to the spool chamber; detecting means provided on a passage of the film leading end portion sent out from the sending port to detect whether or not the film has passed; passage of the film leading end portion by the detecting means A control means for rewinding the film when the film is not detected. 2. The camera according to claim 1, wherein said control means operates said film sending means again after rewinding said film.