JPH08146518A - Projector - Google Patents

Abstract

PURPOSE: To simplify setting work and further make it compact. CONSTITUTION: A long photographic film is stored inside a photographic film cartridge in a rolled shape and the cartridge, which delivers the film outside of the cartridge by the rotation of a spool, is loaded in six holders 62 to 67 from the axial side of the spool. A control unit 70 controls a table transfer mechanism 68 and sets the specific holder 62 in the delivery position. A spool drive mechanism 71 and a lid member drive mechanism 72 arranged in the delivery position rotate the lid member of the cartridge held by the holder 62 to the opening position and the spool to the film delivery direction and deliver the film to the projection opening 74, while the control unit 70 positions the frame to the projection opening 74 by detecting the frame positioning perforation of the film. The frame picture image is illuminated from behind by a light source 79 and projected on a screen 63 through a lens 82. After projecting all frame picture images, the spool drive mechanism 71 rotates the spool in the film winding direction and restores the film in the cartridge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector for projecting an image of each frame of a photographic film as a still image on a screen, and more particularly to a projector using a photographic film cartridge of the type which delivers a photographic film by rotating a spool. It is a thing.

[0002]

2. Description of the Related Art Conventionally, a projector for projecting an image of each frame of a photographic film as a still image on a screen is
There are two types of photographic film to be set, one for slides and one for film strips.

In a slide projector, a slide made by inserting a film piece cut into individual frames into a mount is transmitted with light from a light source, and the transmitted light is projected onto a screen to form a frame image as a still image. To appreciate. There are two types of slide exchange, manual and automatic. The automatic type is equipped with a carousel that can store up to 100 slides, and a random access mechanism selects the designated slide from the rack and sets it at the projection position. It is often used in education and product promotion.

In a film strip projector, a magazine dedicated to winding a strip-shaped photo film with the rear end locked and an empty reel for locking the leading end of the photo film on the opposite side of the projection position are provided. Is provided,
The image of each frame is projected one by one while winding the photo film around the empty reel.

[0005]

However, in the projector for slides, it is necessary to confirm the warp and the fitting condition of the mount for each slide in the preparation stage, and then set them in the rack in the correct orientation. In the case of a type that can accommodate a large number of slides, this is a troublesome work that requires time and effort. Further, as an automatic type, for example, there is a rotary rack type in which racks for vertically setting slides are arranged in a circle, but such a projector is large and heavy, and thus is not easily portable.

Further, in the film strip projector, it is necessary to wind and detach the photo magazine on a magazine for each photo film in the preparation stage, and a plurality of photo films separated from the cartridge are connected to each other. The first frame and the last frame of the photographic film cannot be set at the projection position, and therefore there is a constraint that images of these frames cannot be projected.

It is an object of the present invention to provide a projector capable of continuously projecting images of a large number of frames, simple in preparation, and further compact and lightweight.

[0008]

In order to achieve the above object, in the invention described in claim 1, a photographic film cartridge which feeds the photographic film to the outside of the cartridge by the rotation of the spool is loaded along the axial direction of the spool. Photo film patrone is used. This photographic film cartridge contains a long photographic film in a roll form regardless of whether it is unexposed or developed. Therefore, the projector is engaged with the holder in which the photo film cartridge is loaded along the axial direction of the spool and the spool of the photo film cartridge held by the holder, and the spool is fed in the film feeding direction or the film winding direction. Spool driving means for rotating in the take-up direction and frame feeding means for positioning the frame of the photographic film at the projection position when the spool driving means rotates the spool in the film feeding direction are provided.

[0009]

[Function] The photo film cartridge is loaded in the holder from the axial direction of the spool. As a result, the holder holds the photographic film cartridge. Spool driving means engages with the spool of the photographic film cartridge held and rotates the spool in the film feeding direction. As a result, the photographic film is sent from the tip to the projection position. After that, the frame of the photographic film is set at the projection position by the frame feeding means. The image of the set frame is illuminated from behind by a light source and projected on a screen by an optical system. After projecting the images of all the frames, the spool driving means is rotated in the film winding direction so that the entire photographic film can be stored in a roll inside the cartridge.

As the frame feeding means, it is desirable to control the drive of the spool driving means by detecting a frame positioning perforation previously formed on the photographic film. Therefore, in the invention described in claim 2, when the spool driving means rotates the spool in the film feeding direction, the detecting means detects the frame-positioning perforations formed in advance on the photographic film, and the detecting means is provided. The frame feeding means is composed of the control means for stopping the drive of the spool driving means by detecting the perforation signal.

Further, as described in claim 3, a rack table in which a plurality of holders are arranged at a predetermined pitch along an infinite or finite circulation locus passing through a delivery position where the spool driving means is arranged, and this rack table. And table moving means for setting a predetermined holder designated by a selection operation from the operation section at the delivery position, thereby eliminating the need to replace the photographic film cartridge one by one. In this case, when the rack table is moved, the spool drive means is retracted from the spool, and the shift means is required to engage the spool drive means with the spool when a predetermined holder is set at the delivery position.

By the way, the timing of the film storing operation for winding the photo film inside the cartridge is as follows.
It is desirable to do this after the projection of all frames is completed. However, when shooting is performed only up to some frames in the middle, it is not necessary to project the frames that have not been shot. Therefore, the invention according to claim 4 is provided with identification means for identifying whether or not a frame is being photographed, and film storage control means for performing a film storage operation based on the identified information. In the case of a photographic film having a transparent magnetic recording layer, a magnetic head for reading photographing information magnetically recorded on the photographic film is desirable as the identification means. Further, instead of the magnetic head, a density sensor for discriminating the densities of the frames that have been photographed and the frames that have not been photographed may be used. As the density sensor, a transmissive or reflective photosensor or the like is suitable.

The structure of the photographic film cartridge 10 used in the projector of the present invention will be described below with reference to FIGS. The photographic film cartridge 10 stores a long photographic film 12 in a roll in a state of being wound on a spool 13 inside a cartridge 11, and rotates the spool 13 in the film feeding direction to rotate the photographic film 12 of the cartridge 11. Send it out.

The cartridge 11 comprises an upper case 14 and a lower case 15. The upper and lower cases 14 and 15 are provided in the lower case 15 with the spool 13, lid member 22 and spool lock 47 assembled. 4 engaging claws 1
It is detachably attached by 6. Upper / lower case 1
A film passage 21 for sending out the photographic film 12 is formed on the joint surfaces of the films 4 and 15.

A label 17 on which an identification mark 17a is printed is attached to the outer periphery of the cartridge 11. The identification mark 17a is made up of a combination of, for example, 9-digit numbers, which are different for each photo film cartridge 10, and can be automatically read by a machine and displayed in a bar code form and a numerical form so that it can be read from the appearance. Has been done.

The spool 13 comprises a spool shaft 26, a pair of flanges 27 and 28, and a rotating member 29. The spool shaft 26 is integrally formed with a data plate 30, a pair of flange engaging portions 31 and 32, a slit 33 for locking the rear end of the film, and a rotating member engaging portion 34. For example, a drive shaft built in a camera, a projector or the like engages with the formed key grooves 35 and 36, and the drive shaft is rotated by driving the drive shaft. The rotating member 29 is integrally formed with a disc 38 provided with a ratchet pawl 37, a gear 39, and a display plate 40, and these rotate integrally with the spool shaft 26.

The pair of flanges 27 and 28 are formed with openings 27a and 28a at the center thereof.
The spool shaft 26 is inserted through the a and 28a from one direction, and is rotatably attached to the flange engaging portions 31 and 32 so as to sandwich the photographic film 12 from both sides.

The slit 33 is an opening into which the rear end 12a of the film is inserted. A pair of elastic pressing ribs 33a and 33b formed by cutting out the center of the upper wall forming this opening and a lower wall are pressed. Ribs 33a, 33b
A pair of locking claws 33c, 33 formed to face
d and are provided. The spool shaft 26 has two locking holes 12 provided at the rear end 12a of the photographic film 12.
The photographic film 12 is wound with the emulsion surface facing inward in a state where the b and 12c are engaged with the locking claws 33b and 33c and the pressing ribs 33a and 33b are fitted in the elongated hole 12d.

The inside of the cartridge 11 is divided into three rooms, that is, an information room 18, a film room 19 and a display room 20, and when the spool 13 is incorporated into the cartridge body 11, the photo film 12 is formed together with the flanges 27 and 28. The film room 19, the data board 30 is housed in the information room 18, and the rotary member 19 is housed in the display room 20.

The photographic film cartridge 10 as described above has a film feeding function, a film loosing mechanism, an internal light-shielding mechanism,
A spool rotation lock, a lid member lock, a film type automatic detection function, and a film state external display function are provided, respectively.

The internal light-shielding function is for the unexposed photographic film 1
When the 2 is stowed, the cartridge 1 comes out from the film passage 21.
1 is a function of preventing external light from entering the inside of the unit 1. This function is performed by rotating the lid member 22. The lid member 22 is rotatably provided inside the film passage 21, and the shaft portion 2 having a C-shaped cross section is provided at both ends of the lid portion 22a.
It has a shape in which 4, 25 are integrally formed. Shaft 2
The end surfaces of the reference numerals 4 and 25 are exposed on both side surfaces of the cartridge 11, and the drive shafts for opening and closing the lid member are engaged when loaded in a camera, a projector or the like. By this rotation of the drive shaft, the lid member 22 is rotated between the closed position where the lid portion 22a closes the film passage 21 as shown in FIG. 2 and the open position where the film passage 21 is opened as shown in FIG. Be moved.

The film feeding function is composed of the separating claw 23 and the lips 27b and 28b. Separation claw 23
Is provided integrally with the lower case 15, and the spool 1
When 3 rotates in the film feeding direction, the leading end of the film is separated from the film chamber 19 toward the film passage 21 side.

The lips 27b and 28b are integrally formed so as to face the outer peripheral edges of the pair of flanges 27 and 28, respectively. These lips 27b and 28b have a film feeding function and a film winding loosening function,
When the spool shaft 26 rotates in the film feeding direction, the outermost ends of the photographic film 12 are wrapped so that the rotation of the spool shaft 26 is transmitted to the outermost rim of the photographic film 12 and the photographic film 12 is prevented from being loosened. To do.

Due to the film feeding and film winding loosening functions as described above, the photographic film 12 is made into the spool 1.
When the film 3 is rotated in the film feeding direction, the separating claw 23
As a result, the leading end of the film of the photo film 12 is scooped toward the film passage 21 and is sent out of the cartridge 11 while spreading the lips 27b and 28b.

The lid member locking function is as shown in FIG.
When the lid member 22 is in the closed position, the tip 50a of the lock pole member 50 formed integrally with the upper case 14 enters into the gap of the shaft portion 24 having a C-shaped cross section to prevent the lid member 22 from rotating to the open position. It is a function to do. The drive shaft for opening and closing the lid member pushes the tip 50a of the lock pole member 50 outward from the clearance having a C-shaped cross section when engaged with the shaft portion 24, and rotationally locks the lid member 22 to the open position. To cancel.

The automatic film type detection function is provided when the bar code 41a having the film type information is attached to the adhesive label 41 attached to the data plate 30 of the spool shaft 26 when the spool 13 is rotated in the film feeding direction. The function is to allow a camera, a film processor or the like to automatically read through a reading opening 42 formed on the side surface of the upper case 14.

The film status external display function is the spool 1
By performing the rotation stop control of No. 3, as shown in FIG. 5, the display plate 40 is exposed to one of the four display windows 43 to 46 formed on the side surface of the display chamber 18, and the state of the photographic film 12 is For example, it is a function of displaying four states of unexposed, exposed, developed, and partially exposed to the outside.

The spool lock function is performed by meshing between the gear 39 housed inside the display chamber 18 and the spool lock 47, and this function is interlocked with the rotation of the lid member 22. The spool lock 47 is movably attached between a lock position where the engaging claw 47 a meshes with the gear 39 and a lock release position retracted from the gear 39.
Since 7b is pushed by the inner wall 49 of the upper case 14, it is always urged toward the retracted position. When the lid member 22 is rotated to the closed position, the lever 48 projecting from the shaft portion 25 pushes the other end portion 47c of the spool lock 47, and the one end portion 47c.
The spool lock 47 is moved toward the lock position against the bias of b. When the lid member 22 rotates to the open position,
The pressing of the other end 47c by the lever 48 is released, and the spool lock 47 is moved to the unlock position again by the urging of the one end 47b.

The photographic film 12 has a reversal film such as a positive film, a negative film, and a film sensitivity, and there are types such as 15 frames, 25 frames, and 40 frames having different lengths depending on the specified number of frames. . As shown in FIG. 6, the photographic film 12 has a frame positioning perforation group formed on one side in the width direction. The frame-positioning perforation group has two different types of perforations 51 in the middle of the film.
Are continuously formed, and are arranged in order of a short pitch and a long pitch from the side of the film tip 12e. In the camera, film feeding control is performed so that the center in the longitudinal direction of the aperture is aligned with the center between the perforations 51 having a long pitch, and the photographed image is captured in the range 52 (planned photographing frame) indicated by the chain double-dashed line in the figure. Form as a latent image.

At the opposite end of the perforation group for frame positioning, the film trailing end 12a from the last planned frame is taken.
One film rear end detection perforation 53 is formed at a position closer to the side. Further, in the longitudinal direction of the perforation 53 for detecting the trailing edge of the film, the film information 54 is pre-printed in the factory in the form of a bar code (hereinafter referred to as “pre-exposure”) in the form of a bar code for each planned shooting frame 52. There is. The film information 54 is composed of a film type and a frame number. The frame numbers are in the order of "1, 2, 3, ..." From the leading edge 12e of the film.

The photographic film 12 is coated with a transparent magnetic recording layer, and photographing information is magnetically recorded for each frame photographed by the camera-side magnetic head. The recording range of the shooting information is such that the planned shooting frames 5
It is recorded for each frame at the upper end of 2. As the photographing information, for example, information necessary for a laboratory such as a film processor or a printer processor used at a developing place such as a screen size and an exposure value at the time of photographing, a print size, and the like are recorded.

When such a photographic film cartridge 10 is loaded into a camera and the photographed frame is used as a material at a meeting, a seminar, or the like, a projector that projects the image of the frame on a screen is used. When this transmissive projector is used, the reversal film 12 is used to obtain a positive image. This reversal film 12
As is well known, the photographic film cartridge 10 in which the image is stored is also photographed by a camera and then submitted to a developing station for development processing. This developing process is automatically performed by setting the photographic film cartridge 10 in the film processor. After rotating the lid member 22 to the open position, the film processor drives the spool 13 to send out the reversal film 12. After all the sheets have been sent out, the film rear end 12a and the spool 13 are engaged with each other.
Rotation of the film is stopped, and the film rear end 12a and the spool 13 are stopped.
The engagement with is released.

In this work, an arc-shaped guide plate is inserted from the film passage 21 toward the slit 33, the pressing ribs 33a and 33b are bent, and the engagement between the film rear end 12a and the spool 13 is automatically released. To do. As a result, the reversal film 12 can be transported inside the processor without being cut. The reversal film 12 after the development process is conveyed with the film rear end 12a at the beginning, and is engaged with the spool 13 again using the guide plate. Then, the spool 13 is rotated to store the reversal film 12 in the cartridge 10, and the lid member 22 is rotated to the closed position to complete the operation of the film processor. Photo taken from the film processor Film Patrone 10
Is returned to the user in a state where the developed reversal film 12 is housed in a roll shape.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A projector 60 is equipped with a rotating rack 61 capable of accommodating a plurality of, for example, six photographic film cartridges 10, and a remote control device 59 (hereinafter referred to as a "remote control device") will be described in detail later. ), An automatic change mechanism for automatically setting a desired photo film cartridge 10 and a random access mechanism for automatically setting a predetermined frame at a projection position can be operated. By performing a program setting operation from the remote control device 59, a plurality of photo film cartridges 10 can be automatically set in order, and the frames of the photo film 12 can be continuously set to the projection position in the numerical order.

The carousel 61 is provided with six holders 62 to 67 at intervals of a predetermined angle. In these holders 62 to 67, a photographic film cartridge 10 is loaded along the axial direction of the spool 13 so that the reversal film 12 is delivered with the emulsion surface side facing the light source lamp 79. In these holders 62 to 67, openings 62a to 6 for sending the reversal film 12 to a projection position are provided at positions facing the film passage 21.
7a is formed.

The rotary rack 61 is fixed on a rotary table, and is rotated counterclockwise by a table moving mechanism 68 to sequentially set any one of the holders 62 to 67 at the delivery position. The sending position is
This is a position where the revolved film 12 is sent out from the cartridge 11 toward the projection position, and the holder 62 is located in the figure.

Each of the holders 62 to 67 has a "1
Serial numbers "6" are given in the counterclockwise direction, and marks corresponding to these numbers are given. A sensor 69 that detects the marks on the holders 62 to 67 is provided at the delivery position. The holder number data obtained from this sensor 69 is sent to the control unit 70. Control unit 7
0 controls the table moving mechanism 68 based on this data, and performs automatic change control for setting the predetermined holders 62 to 67 at the sending position.

Film feeding means for feeding the reversal film 12 from the cartridge 11 is provided at the feeding position. The film feeding means is composed of a spool driving mechanism 71, a lid member driving mechanism 72, etc., which are comprehensively controlled by the control unit 70.

The reversal film 12 delivered from the delivery position is delivered to the projection passage 73. The projection passage 73 has a projection opening 74 of a size corresponding to the frame image.
Are formed. The projection aperture 74 is at the projection position, and the optical system 75 with the optical axis 75a aligned in the direction orthogonal to the center is arranged.

A winding chamber 76 is provided at the winding position on the opposite side of the feeding position with the projection passage 73 interposed therebetween. The winding chamber 76 has a built-in winding shaft 77 that winds the reversal film 12 fed out from the leading end 12e of the film.

A bar code reader 78 for reading the frame number recorded on the reversal film 12 is provided near the projection opening 74. The frame number data read by the bar code reader 78 is sent to the control unit 70 and used for random access control for automatically setting a desired frame in the projection opening 74.

The optical system 75 is composed of a light source lamp 79, a condenser lens 80, a Pechan prism 81, and a zoom lens 82. The light emitted from the light source lamp 79 is collimated by the condenser lens 80 and the parallel light is emitted. The light set on the projection opening 74 is illuminated from behind from the back, and the light transmitted through the top is projected onto the screen 63 via the Pechan prism 81 and the zoom lens 82.

The Pechan prism 81 is an image rotating prism for correcting the posture of the image, and includes two prisms 8
The prism 83 on one side of the composite prism composed of 3, 84 is rotatable. This one side prism 8
3 rotates every 90 ° by driving an image rotation motor 87 connected via a hollow gear 85 and a gear 86. This motor 87 is driven by an image rotation motor driver 88.
It is controlled by the control unit 70 via the. Zoom lens 82
In accordance with the control of the control unit 70, the lens moving mechanism 89 moves the lenses 82a and 82b back and forth in the direction of the optical axis 75a to enable projection magnification and focus adjustment. When a single focus lens is used instead of the zoom lens 82, it is necessary to move the lens position and correct the optical path length.

The control section 70 controls the table moving mechanism 68, the image rotation motor driver 88, the lens moving mechanism 89, the spool driving mechanism 71, and the lid member driving mechanism 72, as well as the timer circuit 70a, the power source section 90, The cooling fan drive mechanism 91, the audio synchronization signal generation unit 92, the remote control transmission / reception unit 93, the operation unit 94, the RAM 95, and the ROM 96 are collectively controlled. The RAM 95 stores a sequence for operating each mechanism based on a control signal from the operation unit 94, and also a sequence for program setting. The ROM 96 stores data designated by a program setting operation, for example, data such as the projection order of frames on the photo film cartridge 10, the image position for each frame, the focus position, and the projection magnification.

The power supply unit 90 receives an O signal from the control unit 70.
The light source lamp 79 is turned on or off based on the N or OFF signal. Similarly, the cooling fan drive mechanism 91 also has a control unit 70.
Cooling fan 9 based on ON or OFF signal obtained from
7 is driven or stopped. Voice synchronization signal generator 92
Generates a reproduction signal and a reproduction stop signal based on the tape synchronizing signal obtained from the control unit 70. These signals are sent to an audio tape recorder 99 connected via an external terminal 98 and used to control synchronization with a prerecorded tape. The timer circuit 70a is
It is used when counting a preset projection time.

The remote control transmission / reception unit 93 is provided with an IR filter 100 exposed to the outside, and a phototransistor 101 and an IRED 102 built in the interior of the IR filter 100, for transmitting / receiving data to / from the remote control device 59. You can do it. The reception function is a remote operation in which the infrared light transmitted from the remote control device 59 is received by the phototransistor 101, this infrared light is demodulated into a control signal and sent to the control unit 70 to operate each mechanism. Also, as for the transmission function,
The data sent from the control unit 70 is modulated and converted into infrared light I
This is for displaying the data such as the holder number and the frame number which are released from the RED 102 and obtained by the control unit 70 on the display unit 104 of the remote control device 59. This allows
The remote control device 59 can be operated interactively.

The remote controller 59, as shown in FIG.
In addition to an operation unit 103 for remotely operating the projector, a liquid crystal display unit 104 for displaying a holder number, a frame number, etc. is provided. When the operation unit 103 is operated, as shown in FIG. 9, a control signal is sent to the remote control transmission / reception unit 106 via the matrix circuit 105.
The remote control transmission / reception unit 106 emits infrared light modulated according to the control signal from the IRED 107. Further, the infrared light received by the phototransistor 108 is demodulated into a display signal by the remote controller transmission / reception unit 106, and the holder number, frame number, etc. are displayed on the display unit 104 via the drive circuit 109. The display unit 104 also displays the projection time, the projection magnification, and the like designated by the operation unit 103. Note that reference numeral 1
Reference numeral 10 is an IR filter exposed to the outside. Also,
Various buttons arranged on the operation unit 103 are the same as those on the operation unit 94 on the projector 60 side, and thus the description of the operation unit 94 will be omitted.

FIG. 10 schematically shows the spool drive mechanism 71 and the lid member drive mechanism 72 arranged at the delivery position. The spool drive mechanism 71 includes the spool drive shaft 1
20, a spool driving motor 121, and a driver 122. The drive shaft for spool 120 is
The spool 13 is movably arranged between an engaging position for engaging the key groove 35 of the spool 13 and a retracting position for retracting from the engaging position, and the motor 121 is driven to move the spool 13 in the film feeding direction or in the winding position at the engaging position. Rotate in the take direction.

The lid member drive mechanism 72 includes the lid member drive shaft 1.
23, motor 124 for driving the lid member, driver 12
5 and the lock pole release shaft 126. The drive shaft 123 for the lid member is provided with the key groove 25 of the lid member 22.
It is arranged so as to be movable between an engaging position for engaging with the retracted position and a retracted position retracted from the engaging position.
By driving 24, the lid member 22 is rotated between the closed position and the open position. The lock pole release shaft 126 is movably arranged between an engaging position where it engages with the key groove 24 on the opposite side of the lid member 22 and a retracted position retracted from the key groove 24. Member 50 to keyway 24
Extruded from within the C-shaped cross section. The lock pole release shaft 126 is adapted to follow the rotation of the lid member 22.

The spool drive shaft 120, the lid member drive shaft 123, and the lock pole release shaft 126 are
By the operation of the shift mechanism 127, the shift mechanism 127 is moved simultaneously between the engagement position and the retracted position. The movement to the engagement position is performed after one of the holders 62 to 67 is set to the delivery position, and the movement to the retracted position is performed before operating the table moving mechanism 68.

The drive of the motor 121 for driving the spool is
In addition to being transmitted to the spool drive shaft 120, it is transmitted to the take-up shaft 77 via the drive transmission mechanism 127 and the one-way clutch 128. The drive transmission mechanism 127 is, for example, a gear train, and the one-way clutch 128 transmits only the drive in the forward rotation direction of the motor 120 that rotates the spool 13 in the film feeding direction, and conversely, in the film winding direction. Drive in the reverse direction of the motor 120 for rotating the motor is not transmitted. At this time, the one-way clutch 129
Disconnects the drive transmission mechanism 128 from the winding shaft 77, so that the winding shaft 77 becomes free.

The control unit 70 controls the film feeding by executing the sequence of the film feeding operation, the frame feeding operation, and the film storing operation. In the film feeding operation, the table moving mechanism 68 is operated to set the predetermined holders 62 to 67 to the feeding position, and then the shift mechanism is operated to operate the spool drive shaft 120, the lid member drive shaft 123, and the lock pole release. This is an operation of moving the shaft 126 to the engagement position and then driving the spool drive shaft 120 in the forward direction.

In the frame feeding operation, the "H" or "L" obtained by the positioning perforation 51 passing during the film feeding from the photo sensor 130 provided in the upper right of the projection opening 74 as seen from the light source lamp 79 side. The analog signal is digitally converted by the perforation signal generator 131 and taken in by the control unit 70. When the rising or falling of the first perforation signal is detected, the rotation of the spool motor 121 is decelerated and the second perforation signal is decelerated. When the rise or fall of the image is detected, the drive of the spool motor 121 is stopped and the frames are set one by one in the projection opening 74.

The operation sections 94 and 103 are provided with film fast-forward operation buttons. When this button is pressed, the reversal film 12 is fed while the button is pressed, and the control unit 70 controls the positioning of the frame in the projection opening 74 after the pressing operation is completed. At this time, the positioning perforation 52 is applied to the frame to be positioned.
Since it cannot be determined whether the frame is the first frame or the second frame, there is a risk that the frame may be displaced from the projection opening 74 and set. Therefore, the control unit 70 adds the rising edge or the falling edge of the perforation signal when feeding the reversal film 12 in the film feeding direction, and feeds the reversal film 12 in the film winding direction. Is provided with a perforation counter 131a for subtracting the rising or falling edge of the perforation signal.

During the frame advancing operation, the photo sensor 13
The control unit 70 reads the shooting information recorded for each frame via the magnetic head 190 provided next to 0. Control unit 70
Indicates that the frame feed operation is continued if the photographed information is recorded as a result of reading, and the frame feed operation is terminated if the photographed information is not recorded, and a film storing operation described later in detail is performed. . Instead of the magnetic head 190, a sensor for reading the density of the photographed image of each frame may be provided to identify whether or not the frame is photographed based on the read density.

In the film storing operation, the photo sensor 132 provided at the lower left of the projection opening 74 detects the end of the "H" or "L" analog signal obtained by the film end detection perforation 53 passing during the feeding of the film. By the digital conversion in the section 133 and the control section 70 taking in, the driving of the spool motor 121 in the forward rotation direction is stopped, and then the motor 121 is driven in the reverse rotation direction to move the reversal film 12 into the cartridge 11. Store all. Then, after all are stored, the lid member drive shaft 123 is driven to rotate the lid member 22 to the closed position, and then the shift mechanism 127 is operated to operate the spool drive shaft 120, the lid member drive shaft 123, and The lock pole release shaft 126 is moved to the retracted position. The end detector 133 distinguishes the film information 54 pre-exposed in the form of a bar code from the film end detection perforation 53.

When the control unit 70 performs the random access operation, only the frame number is read out from the bar code reader 78 provided in parallel with the photo sensor 132 among the film information data obtained during film feeding. The frame number read by the device 134 is compared, and the read frame number is compared with the designated frame number. The motor 121 is rotated in either direction so that the designated frame number is sent toward the projection opening 74. The reversal film 12 is fed until the number becomes the same as the designated frame number. The positioning of the predetermined frame in the projection opening 74 is performed by detecting the positioning perforation 51 as described above. The frame number reader 134 applies the bar code signal read by the bar code reader 78 to the control unit 70.
Convert to a signal that can be handled by.

Next, the operation of the above configuration will be described. There are two types of methods for operating the remote controller 59: an annual operation and a program setting operation. In the case of manual operation, one to six photographic film cartridges 10 are loaded in the holders 62 to 67, and then the POWER button 140 of the remote controller 59 is pressed. As a result, the control signal from the operation unit 103 is transmitted to the matrix circuit
Infrared light that has been captured by the remote control transmission / reception unit 106 via 05 and modulated according to the control signal is emitted from the IRED 107. In the projector 60, the phototransistor 101 receives infrared light and the remote controller transceiver 93 demodulates the control signal, and the control signal is taken into the control unit 70, and the control unit 70 operates the power supply unit 90 and the cooling fan drive mechanism 91. Then, lighting of the light source lamp 79 and driving of the cooling fan 97 are started.

The control section 70 displays the holder number read by the sensor 69 on the display section 104 of the remote control device 59 via the remote control transmission / reception sections 93 and 106. This display position is the liquid crystal display portion indicated by reference numeral 141 in FIG. 8 in the display portion 104. While viewing this display, the user can interactively perform an auto change operation for setting the desired photo film cartridge 10 at the delivery position.

The automatic change operation is performed by pressing the buttons indicated by reference numerals 142 and 143 in the operation section 103 in FIG. When the pressing operation of the button 142 is performed, the control unit 70 operates the table moving mechanism 68 so that the holders 62 to 67 are set to the sending position in the numerical order, that is, the clockwise direction, and the pressing operation of the button 143 is performed. Then, the table moving mechanism 68 is operated so that the holders 62 to 67 are set to the delivery position in the counterclockwise order.

Next, a random access operation for setting a desired frame in the projection opening 74 is performed. This operation is performed in the operation unit 103 by using the forward 1-frame forward button 144, the backward 1-frame forward button 145, and the forward fast-forward button 14.
This can be done by pressing four types of buttons, the reverse fast forward button 147. When the forward one frame feed button 144 is pressed, the reversal film 12 is fed by one frame in the film feed direction. When the reverse one-frame feed button 145 is pressed, the reversal film 12 is pressed.
Send one frame in the film winding direction. In the pressing operation of the forward fast-forward button 146, the reversal film 12 is fed in the film feeding direction while the button is pressed, and a frame passing through the projection opening 74 after the pressing operation is finished is set in the projection opening 74. When the reverse fast forward button 147 is pressed, the reversal film 12 is pressed while the button is pressed.
Is fed in the film winding direction, and a frame passing through the projection opening 74 after the pressing operation is completed is set in the projection opening 74. The number of the frame set in the projection opening 74 by these operations is displayed on the liquid crystal display section 148 of the display section 104 of the remote control device 59.

When the desired frame is set in the projection opening 74, the image of the frame is projected on the screen 63.
The user performs an operation of adjusting the focus, the projection magnification, and the position of the image while looking at the projected image. The focus adjustment operation is performed by pressing the buttons denoted by reference numerals 149 and 150 in the operation unit 103 of the remote control device 61. As a result, the control unit 70 advances and retracts the zoom lens 82 via the lens moving mechanism 89 to adjust the focus. Similarly, the projection magnification is changed by pressing the buttons denoted by reference numerals 151 and 152 of the operation unit 103 so that the control unit 70 advances and retracts the zoom lens 82 via the lens moving mechanism 89 to change the magnification. Further, the image position adjustment is performed by the operation unit 10.
The button indicated by reference numeral 153 out of 3 is pressed. As a result, the control unit 70 rotates the prism 83 every 90 ° via the image rotation motor driver 88 and the motor 87, so that it is possible to project an image of a frame shot in the vertical position in the correct direction.

After the last frame is projected, the film storage operation is automatically performed by the detection of the film rear end detection perforation 53. Also, photo film 12
In some cases, the camera may only take images up to the middle frame. For such a reversal film 12, the photographic information recorded only for the frames photographed by the camera is fed to the magnetic head 19 during the frame advancing operation.
The film storing operation is performed after 0 is read and the frame feeding operation is performed when the photographing information is not recorded. As a result, the projection of the frames that have not been photographed is omitted, and since the frames that have not been photographed have not been photographed, the film storage operation is performed when the frames that have not been photographed are detected. By doing so, there is an advantage that it is possible to save the trouble of seeing the projection of each imageless frame, and the time for the projection work can be shortened.

Next, regarding the program setting operation, FIG.
It will be described with reference to the flowchart shown in FIG. In the program setting operation, the image of each frame is sequentially projected on the screen 63, and the projection magnification, projection time, image position, and path setting for each frame are input in advance while viewing the projected image. As a result, it is possible to automatically project a plurality of frames under the specified conditions without manually operating the remote control device 59 at a meeting or a seminar.

This program setting operation is performed by the program setting button 154 of the operation unit 103 of the remote controller 59.
By pressing, the sequence for program setting is executed. In this sequence, the photographic film cartridges 10 are set at the delivery position in the order of the numbers of the holders 62 to 67. Initially, the holder 62 of No. 1 is set at the delivery position. At this time, the holder number "1" is displayed on the liquid crystal display 141 of the remote controller 59. Thereafter, the projector 60 carries out the film feeding operation, and the first frame is set in the projection opening 74. At this time, the liquid crystal display section 148 of the remote control device 59 displays the frame number "1".

The user inputs the setting of the projection magnification, the projection time, the image position, and the path from the remote controller 59 while looking at the image of the frame projected on the screen. The projection magnification is 1 time, 2 shown by reference numerals 155, 156 and 157 in FIG.
The setting can be easily performed by pressing any one of the buttons for setting the magnification and the magnification of three.
8 is displayed. The projection time is represented by reference numerals 159 and 16 in FIG.
The setting can be easily performed by pressing any one of the 5 seconds, 10 seconds, 15 seconds, and 20 seconds setting buttons indicated by 0, 161, 162, and the set time is displayed on the liquid crystal display unit 163. The image position can be set to the horizontal and vertical positions each time the button indicated by reference numeral 164 is pressed, and the set image position is displayed on the liquid crystal display unit 165, for example, "horizontal" or "vertical".
Is displayed. The path setting is indicated by reference numeral 166 in FIG.
Each time the button indicated by is pressed, it can be set to no pass or pass, and for example, no pass is displayed on the liquid crystal display unit 167,
In the case of a pass, "-" is displayed. Frames for which this path has been set are skipped.

After making these settings, the confirm button 16
By pressing 8 the set item is stored in the ROM 95, and then the frame advance operation is performed to set the next frame in the projection opening 74. The same setting as described above is repeated for this frame. After the setting of all the frames for the photo film cartridge 10 of the holder 62 of No. 1 is completed, the setting of all the frames for the photo film cartridge 10 of the holder 63 of No. 2 is performed. When the setting is completed for all the photo film cartridges 10, the end button 169 is pressed to end the program setting sequence.

When executing the set program,
The start button 170 of the remote control device 59 is pressed.
As a result, the film feeding operation and the frame feeding operation are performed, and the frames for which no path is set are sequentially projected. When each frame is set in the projection opening 74, the control unit 70 activates the audio synchronization signal generating unit 92 and the external terminal 9
Audio tape recorder 99 connected via 8
Send the playback signal to.

In the audio tape recorder 99, the explanatory text for the image of each frame is prerecorded on the tape by voice at each projection time through the microphone 99a, and the tape is reproduced according to the reproduction signal. Further, after setting each frame in the projection opening 74, the control unit 70 sets the set projection time in the timer circuit 70a and starts subtraction. After that, the lens moving mechanism 89 and the image rotation motor driver 88 are operated so that the projection magnification and the image position are set. During this time, manual operation can be performed from the remote controller 59. Then, when the count of the timer circuit 70a reaches "0", the control unit 70 activates the audio synchronization signal generation unit 92 and sends a reproduction stop signal to the audio tape recorder 99, and then performs a frame advance operation. Projection of the next frame that has not been set as a pass 74
Set to. After projecting all the frames for which the paths have not been set, the film storing operation is performed and then the holders 62 to 67 having the next numbers are set to the delivery position. The projected photo film cartridge 10 is displayed on the display plate 40 by controlling the spool rotation stop of the motor 121.
The rotation of the spool 13 is stopped at a position where it is exposed in the display window 45 that indicates that the film is a developed film.

In the above embodiment, the plurality of holders is a carousel in which a circle is an endless circulation locus arranged at a predetermined pitch. However, the present invention is not limited to this, and the plurality of holders is a straight line having a finite circulation locus. It may be a rack arranged above.

In the above embodiment, the number of frame positioning perforations 51 formed on the photographic film 12 is two for each frame, but the present invention is not limited to this number.
The number may be three or more. In these cases, the film feeding control can be performed by changing the deceleration and stop timing of the film feeding according to the number of frame positioning perforations per frame.

In the above embodiment, as a random access mechanism for setting a desired frame designated by the remote control device 59 at the projection position, the frame number recorded in advance for each frame of the photographic film during feeding the film is read by the bar code reader 78. The drive position of the spool drive shaft 121 is controlled so as to set the desired frame to the projection position by detecting the feeding position of the photographic film 12 by reading with, but instead of this, the frame positioning perforation 51 is used. May be controlled by the perforation counter 131a and a desired frame may be controlled to be set at the projection position based on this count value.

Although the rack number is displayed on the liquid crystal display 141 of the remote controller 59 in the above embodiment, the identification mark 17a printed on the label 17 of the photographic film cartridge 10 is read and the identification mark 17a is read. It may be displayed on the display unit of the remote controller 59. Further, it is desirable that the liquid crystal display unit 141 of the remote control device 59 is provided with a backlight so that it can be easily read even in a dark room.

In the above embodiment, bidirectional information exchange between the remote control device 59 and the projector 60 is performed by the IRE.
Although infrared light emitted from D is used, optical communication may be used.

In the above embodiment, the photographing information recorded for each frame of the photographic film 12 is read by the magnetic head during the frame advancing operation. However, the numbers of all the frames which have been photographed are recorded at the leading end 12e of the film. In the case of the photo film 12 photographed by a camera that collectively records magnetically as photographing information, the photographing information recorded on the leading end 12e of the film is previously read and stored by the magnetic head during the initial film feeding operation. Alternatively, based on the stored shooting information, frames that have not been shot may be skipped and only frames that have been shot may be projected. According to this, for example, even in the case of the photo film 12 in which only the frames in the middle are not photographed, it is possible to project all the frames which are being photographed.

When there are a plurality of sizes of frames that have been photographed, it is desirable to change the size of the projection aperture 74. In this case, depending on the size of the frame, the projection opening 7
A size changing unit for changing the size of No. 4 is provided, and the size changing unit is operated according to the screen size obtained from the reading of the photographing information to change the size of the projection opening 74. As the size changing means, a plurality of types of plates provided with projection openings corresponding to the frames of different sizes are prepared, and the plate having the projection aperture of the desired size is projected based on the photographing information obtained for each frame. The projection aperture may be formed in the largest size of the different sizes, and the size of the projection aperture may be changed vertically or horizontally by the mask means.

[0077]

As described above, according to the first aspect of the invention, the photographic film cartridge in which the long photographic film is housed in a roll is used.
The advantage of saving the work of slide confirmation at the preparation stage that occurs in the slide projector explained in the prior art is that the work of setting the photo film cartridge in the holder can be done more quickly than the work of setting the slides one by one. There is. Further, since the shape of the photographic film cartridge is compact, the projector itself can be made much more compact than the projectors for slides and filmstrips. In addition, compared to a projector for film strip, since it is possible to project a photographic film in a long shape without separating it from the cartridge, there may be a restriction that the images of the first and last frames cannot be projected. Absent.

Further, according to the second aspect of the invention, when the spool driving means rotates the spool in the film feeding direction, the detecting means detects the perforations for frame positioning previously formed on the photographic film. It is possible to position each frame reliably.

According to the third aspect of the present invention, the rack table having a plurality of holders is moved by the table moving means, and the predetermined holder designated by the selection operation from the operation section is set at the delivery position. You can save the trouble of replacing the photo film cartridges one by one.
Further, in terms of the size of the projector with respect to the number of frames that can be set, the shape of the photo film cartridge used in the projector of the present invention is compact, so that the projector for slides and the film strip for projectors provided with a large number of holders It can be made much more compact than

According to the fourth aspect of the present invention, by identifying the frames that have not been photographed, it is possible to control all of the photographic film that has been sent out to be caught in the film cartridge. Therefore, the projection of the frames that have not been photographed is omitted. Therefore, the projection time can be shortened.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a photographic film cartridge used in a projector of the present invention.

FIG. 2 is a cross-sectional view of the photographic film cartridge with the lid member in the closed position.

FIG. 3 is a cross-sectional view of the photographic film cartridge with the lid member in the open position.

FIG. 4 is a side view showing one side of the photographic film cartridge, with a part cut away.

FIG. 5 is a side view showing the other side of the photographic film cartridge, partly cut away.

FIG. 6 is a plan view showing a photographic film viewed from the side opposite to the emulsion surface.

FIG. 7 is a schematic explanatory diagram showing a projector of the present invention.

FIG. 8 is a front view of the remote control device.

FIG. 9 is a schematic explanatory diagram of a remote control device.

FIG. 10 is a schematic explanatory view of a film feeding control mechanism.

FIG. 11 is a flowchart showing a procedure for setting a program from a remote control device.

FIG. 12 is a flowchart of a film feeding operation.

FIG. 13 is a flowchart of a frame advance operation.

FIG. 14 is a flowchart of a film storing operation.

FIG. 15 is a flow chart diagram when a program is executed.

[Explanation of symbols]

 10 Photo Film Patrone 11 Patrone 12 Photo Film 13 Spool 22 Lid Member 51 Perforation for Frame Positioning 53 Perforation for Film End Detection 54 Film Information 59 Remote Control Device 60 Projector 62-67 Holder 63 Screen 74 Projection Aperture 76 Rolling Room 81 Petchan Prism 120 Drive shaft for spool 123 Drive shaft for lid member 130 Photo sensor

Claims (4)

[Claims] 1. A projector in which a frame of a photographic film set at a projection position is illuminated from behind by an illuminating means, and light transmitted through the frame is projected onto a screen via an optical system. The photo film cartridge is stored in a roll and the photo film cartridge is sent to the outside of the cartridge by rotating the spool. Spool driving means that engages and rotates the spool in the film feeding direction or the film winding direction, and when the spool driving means rotates the spool in the film feeding direction, the frame of the photographic film is set to the projection position. A project having a frame feeding means for positioning. Over. 2. The frame feeding means includes a detecting means for detecting a frame-positioning perforation formed in advance on the photographic film when the spool driving means rotates the spool in the film feeding direction, and the frame feeding means is obtained from the detecting means. 2. The projector according to claim 1, further comprising: a control unit that stops driving of the spool driving unit based on the generated perforation signal. 3. A rack table in which a plurality of the holders are arranged at predetermined intervals along an infinite or finite circulation locus passing through a delivery position where the spool drive means is arranged, and a rack table is moved to operate from an operation section. A table moving means for setting a predetermined holder designated by a selection operation to the delivery position and a spool driving means retracted from the spool while the rack table is moved, and a spool when the predetermined holder is set to the delivery position. 3. The projector according to claim 1, further comprising shift means for engaging the drive means with the spool. 4. A film winding direction based on identification means for identifying whether or not each frame of the photo film has been photographed, and information for identifying whether or not the image has been photographed by the identifying means. 4. The projector according to claim 1, further comprising: a film storage control unit that rotates the photo film into a photo film and winds the photo film in a cartridge.