JP3548278B2 - Film carrier - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film carrier provided in a photographic printer or the like for drawing out a photographic film wound around a cartridge and performing image printing.
[0002]
[Prior art]
A photographic film (for example, a negative film) for which photographing has been completed is wound up in a case such as a patrone and then sent to a developing laboratory. At the photo lab, the negative film wound around the patrone is pulled out, processed for development, and the negative film is mounted on the film carrier of the printer processor, and the image recorded on the negative film is printed on photographic paper. To create a photo print.
[0003]
The negative film that has been subjected to the development processing is cut into piece negatives for each predetermined image frame (for example, every 6 frames), placed in a negative sheet, and returned to the customer along with a photographic print.
[0004]
In recent years, there has been studied a method of winding a negative film, which has been subjected to the development processing, onto a patrone (hereinafter referred to as a “cartridge”) without cutting, and returning the film. By storing the negative film without cutting it, if the information at the time of shooting the negative film, the information at the time of printing, etc. are recorded, read the information recorded at the negative film and use it for the next print etc. can do.
[0005]
When the negative film is wound up and stored in a cartridge as described above, there is a problem that the winding habit occurs to a certain extent and the film is tangled when pulled out from the cartridge. For this reason, in a film carrier, it has been proposed that a negative film drawn from a cartridge is once wound around a winding shaft provided in advance. This makes it very easy to process the negative film at the time of printing.
[0006]
By the way, when winding the negative film on the winding shaft, if the tip of the negative film is hooked on the winding shaft, the work efficiency is reduced, so a method of winding the negative film on the winding shaft by frictional force is considered. Have been.
[0007]
However, if the frictional force between the negative film and the winding shaft is low, it is difficult to reliably wind the negative film around the winding shaft. If the negative film is strongly pressed against the winding shaft by a roller or the like in order to increase the frictional force between the negative film and the winding shaft, the leading end of the negative film is automatically moved between the winding shaft and this roller. It is difficult to get into the gap.
[0008]
On the other hand, since the diameter of the winding shaft changes when the negative film is wound, the winding shaft cannot be driven at a constant speed even when the transport speed of the negative film is constant. When printing images recorded on a negative film, it is necessary to transport and stop the negative film.RepeatedTherefore, it is difficult to control the motor that rotates the winding shaft to synchronize the rotation of the winding shaft with the transport speed of the negative film. If such a winding shaft is rotated at a constant speed irrespective of the speed at which the negative film is conveyed, the negative film may be slackened or tightly wound, causing scratches on the negative film.
Further, dust or the like adhering to the air or the negative film may adhere to the winding shaft or the like, and maintenance such as cleaning is required to properly wind the negative film.
[0009]
[Problems to be solved by the invention]
The present invention has been made in consideration of the above-described facts, and has as its object to provide a film carrier capable of performing a smooth printing process on a negative film with a simple structure.
[0011]
[Means for Solving the Problems]
Claim 1According to the invention, when an image recorded on a photographic film housed in a layered manner in a cartridge is arranged at a predetermined printing position, the photographic film drawn from the cartridge is provided with the printing position. A film carrier that is conveyed along the conveying path, and is wound around a winding shaft of a film accommodating portion, the guide roller pressing the photographic film toward the winding shaft, and the winding shaft and the guide. Guide means for guiding the photographic film between the roller and a roller, by moving the guide means and the guide roller in a direction away from the circumferential surface of the winding shaft, thereby forming a peripheral surface of the winding shaft. Can be opened.
Also,Claim 2The invention according toClaim 1Wherein the film accommodating portion surrounds the winding shaft between the base portion and the base portion while pivotally supporting the winding shaft, and rotates in a direction away from the base portion. And a cover that allows the base-side peripheral surface of the take-up shaft to be opened.
Claim 3According to the invention, when an image recorded on a photographic film housed in a layered manner in a cartridge is arranged at a predetermined printing position, the photographic film drawn from the cartridge is provided with the printing position. A film carrier that is conveyed along the conveying path, and is temporarily wound around a winding shaft of the film storage unit, and a driving unit that drives the winding shaft of the film storage unit in the winding direction of the photographic film; A driving force reducing unit provided between the driving unit and the winding shaft, the driving force reducing unit suppressing a driving force transmitted from the driving unit to the winding shaft when a rotation torque of the winding shaft is increased; And a disconnection means provided between the reduction means and the driving means for releasing transmission of the driving force when receiving a load equal to or more than a predetermined load.
[0014]
[Action]
Claim 1According to the invention described in the above, the guide roller and the guide means disposed around the winding shaft can be separated from the periphery of the winding shaft, and by separating the guiding means and the guide roller from the periphery of the winding shaft, The peripheral surface of the winding shaft can be easily opened.
By making it possible to easily open the periphery of the take-up shaft in this way, even if dirt or the like adheres to the peripheral surface of the take-up shaft, cleaning becomes easy, and friction due to dirt or the like adhered to the peripheral surface of the take-up shaft. It is possible to prevent the smooth winding of the photographic film from being impaired due to the decrease in the force.
At this time,Claim 2In the invention described in (1), the base supporting the winding shaft is separated from the base portion so that the base portion side of the winding shaft can be easily opened.
[0015]
Claim 3In the invention described in (1), a driving force reducing unit such as a torque limiter is provided between the winding shaft and a driving source of a driving unit of the winding shaft, and the peripheral speed of the winding shaft by the driving force of the driving unit (photograph) Even if the speed at which the film is wound is higher than the speed at which the photographic film is transported, no excessive tension is applied to the photographic film when winding the photographic film around the winding shaft.
[0016]
Further, when the photographic film wound on the winding shaft is pulled out from the winding shaft, the connection releasing means such as a one-way clutch releases the driving force of the driving means. Even if the peripheral speed of the photographic film is increased, the photographic film wound around theButIt can be prevented from sticking. Also, since the take-up shaft rotates according to the speed of transport of the photographic film,When pulled out and rewound into the cartridge,Photographic filmLoose windingDoes not occur.
[0017]
Note that,Driving means, when winding the photographic film on the winding shaft, since the winding shaft may be rotated at a peripheral speed higher than the conveying speed of the photographic film conveyed in the conveying path,singleCan be used to rotate the take-up shaft and drive the photographic film on the transport path.
[0018]
【Example】
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
[0019]
1 to 3 schematically show a film carrier 10 applied to the first embodiment. The film carrier 10 is attached to a printer processor or the like that prints an image recorded on a photographic film (hereinafter, referred to as a “negative film 12” as an example) on photographic paper or the like to create a photographic print. In this printer processor, when an image recorded on the negative film 12 is printed on photographic paper, a series of processes such as color development, bleach-fixing, rinsing (washing), and drying are performed on the photographic paper to create a photographic print. It is supposed to.
[0020]
As shown in FIGS. 4A and 4B, the negative film 12 mounted on the film carrier 10 includes a reader unit 14, an image recording unit 16, and a tail unit 18. The tail portion 18 of the negative film 12 is locked to a spool shaft 22 of the cartridge 20, wound around the spool shaft 22 in a layer shape, and housed in the cartridge 20.
[0021]
Image frames 16A on which images are recorded by photographing or the like are formed at predetermined intervals in the image recording section 16 of the negative film 12, and a perforation 24 indicating each position of the image frames 16A is provided at one end in the width direction in the longitudinal direction. Are formed at predetermined intervals. Around perforations 14 </ b> A and 18 </ b> A are provided on the leader portion 14 and the tail portion 18 of the negative film 12, respectively, on the image recording portion 16 side, and the tail portion 18 indicates the rear end position of the negative film 12. A detached perforation 18B is formed, and a notch 14B is formed at the leading end of the reader section 14. By optically detecting these, the positions of the leading end, the trailing end, and the image recording section 16 of the negative film 12 can be accurately determined. So that you can know.
[0022]
A magnetic recording layer on which magnetic information is recorded is provided at both ends in the width direction of the negative film 12, and a gap between adjacent perforations 24 in the image recording unit 16 is used for recording magnetic information. Used as the track 26, information on the negative film 12, information at the time of shooting the image of each image frame 16A, exposure conditions for printing each image on photographic paper, and the like are recorded. A substantially transparent magnetic recording layer may be provided on the entire surface of the negative film 12, and a part thereof may be used as the magnetic track 26.
[0023]
As shown in FIGS. 1 to 3, the film carrier 10 on which the negative film 12 is mounted includes a pedestal 30, a cartridge loading section 32, a film accommodating section 34, and a cover 36 that covers the upper surface of the pedestal 30. On the upper surface of the pedestal 30, a transport path 38 for connecting the cartridge loading section 32 and the film accommodating section 34 is formed. The transport path 38 is usually covered with a cover 36.
[0024]
When the cartridge 20 accommodating the developed negative film 12 is mounted on the cartridge loading section 32, the drive shaft 102 is engaged with the spool shaft 22 in the cartridge 20.
[0025]
As shown in FIG. 5, the drive shaft 102 is driven by the gear 106 provided with the torque limiter 104 meshed with the gear 108 provided on the drive shaft 40A of the motor 40. Is transmitted to the spool shaft 22. FIG. 5 shows a schematic configuration of the transport mechanism 100 for the negative film 12 provided on the film carrier 10.
[0026]
By rotating the spool shaft 22 in the feeding direction of the negative film 12 by the driving force of the motor 40, the leading end of the negative film 12 is sent out to the transport path 38. Further, by rotating the spool shaft 22 in the winding direction of the negative film 12 by reversing the motor 40, the negative film 12 pulled out from the cartridge 20 can be wound on the spool shaft 22. .
[0027]
The torque limiter 104 enables the spool shaft 22 to rotate (relatively) quickly in the feeding direction of the negative film 12 with respect to the drive shaft 40A of the motor 40, and the motor 40 rotates the spool shaft 22 around the negative film 12. If a load equal to or more than a certain value acts while rotating in the take-off direction, the spool shaft 22 is rotated relative to the drive shaft 40A of the motor 40.
[0028]
The motor 40 rotates the spool shaft 22 at a peripheral speed lower than the transport speed of the negative film 12 in the transport path 38 when sending the negative film 12 from the cartridge 20, and when the negative film 12 is wound around the spool shaft 22. The rotation speed is set such that the spool shaft 22 is rotated at a peripheral speed higher than the transport speed of the negative film 12 in the transport path 38.
[0029]
The cartridge loading section 32 checks whether or not the negative film 12 accommodated in the cartridge 20 has been developed and then sends it out to the transport path 38. Prevents them from being exposed and exposed.
[0030]
As shown in FIGS. 1 to 3, the transport path 38 includes feed rollers 42A to 42D provided as a pair on the pedestal 32 and the cover 36, and is driven by a motor 44 (see FIG. 2). Is transported in the direction of pulling out from the cartridge 20 (the direction of arrow A in the figure) and the direction of feeding into the cartridge 112 (the direction opposite to the direction of arrow A). That is, as shown in FIG. 5, pulleys 112 and 114 (the pulley 114 corresponds to the feed roller 42D) are attached to one end of the shaft 110 to which the feed rollers 42A to 42D are attached. An endless drive belt 118 is wound between these pulleys 112 and 114 and a pulley 116 attached to the drive shaft 44A of the motor 44, and the driving force of the motor 44 is transmitted through the drive belt 118. ing.
[0031]
As shown in FIGS. 3, 6A and 6B, a winding shaft 50 for winding the negative film 12 is provided in the film housing portion 34. As shown in FIGS. 6A and 6B, the upper part of the winding shaft 50 is covered by a cover part 120, and an arc-shaped guide 124 is provided on a base part 122 below the cover part 120. A space for winding and storing the negative film 12 is formed on the winding shaft 50. The guides 124 are provided so as to correspond only to both ends in the width direction of the negative film 12 to prevent the image portion of the negative film 12 from coming into contact with the guides 124.
[0032]
The cover part 120 is provided with a guide plate 128 whose one end is locked to a lever 126, and one end of a connection lever 130 is opposed to the end of the guide plate 128, and the guide plate 128 is rotatably attached to each. Connected by a guide roller 52. The other end of the connecting lever 130 is opposed to the end of a lever 134 connected to the plunger 132A of the solenoid 132, and is connected via a shaft 136 rotatably attached to each. A torsion coil spring (not shown) is interposed between the lever 134 and the connection lever 130, and the guide roller 52 side of the connection lever 130 is urged to rotate toward the winding shaft 50. Thus, the guide roller 52 presses the peripheral surface of the winding shaft 50 with a predetermined pressing force.
[0033]
Below this winding shaft 50,One endA guide plate 140 pivotally supported by the shaft 138 is provided. The guide plate 140 is provided with a guide roller 52 at the tip, and presses the guide roller 52 against the winding shaft 50 by the urging force of the extension coil spring 142. The force by which the guide plates 128 and 140 press the guide roller 52 toward the peripheral surface of the winding shaft 50 is such that the leading end of the negative film 12 can be easily inserted between the guide roller 52 and the winding shaft 50. Is relatively weak.
[0034]
As a result, the negative film 12 fed from the transport path 38 into the film accommodating section 34 is guided at the leading end along the lower surface of the guide plate 128 between the guide roller 52 and the winding shaft 50, and is wound around the guide roller 52. It is designed to penetrate between the peripheral surfaces of the spindle 50. At this time, since the winding shaft 50 is rotated in the winding direction of the negative film 12, the negative film 12 is wound around the winding shaft 50. The leading end of the negative film 12 is further guided by the guide plate 140 and fed between the guide roller 52 of the guide plate 140 and the winding shaft 50, and is gradually wound on the winding shaft 50 in a layered manner. I have. In addition, silicon rubber or the like having a large frictional resistance is used on the outer peripheral portion of the winding shaft 50 so that the frictional force between the negative film 12 and the negative film 12 is increased even if it is lightly pushed by the guide roller 52.
[0035]
On the other hand, the other end of the lever 126 that locks the guide plate 128 is connected to the lever 134. When the solenoid 132 is driven and the plunger 132A is pulled in, the tip of the lever 126 rotates downward. It has become. Thus, the negative film 12 is guided along the upper surface of the guide plate 128. The cover portion 120 is formed with a discharge passage 88 for discharging the negative film 12 guided along the upper surface of the guide plate 128 from the film storage portion 34. For example, a so-called strip that is not stored in the cartridge 20 is formed. The negative film 12 that cannot be wound and stored on the winding shaft 50 such as a negative film 12 or a piece negative (need not be stored) can be discharged from the film carrier 10.
[0036]
Note that the negative film 12 once discharged from the discharge path 88 can be conveyed to the transport path 38 on the base 30 using the discharge path 88 as an insertion port. Such an operation is performed when the negative film 12 not contained in the cartridge 20 is printed.
[0037]
The cover 120 has an end opposite to the take-up shaft 50 rotatably attached to the base 122 via a shaft 146. By rotating the cover 120 around the shaft 146, The winding shaft 50 moves integrally, and the periphery of the winding shaft 50 is opened (see FIG. 6B). Further, the lower side of the winding shaft 50, that is, the base portion 122 side is opened by the rotation of the cover portion 120. Thereby, the cleaning of the peripheral surface of the winding shaft 50 and the lower part of the winding shaft 50 is facilitated. The base portion 122 is provided with a recess 148 for collecting dust and the like attached to the winding shaft 50 directly below the winding shaft 50 between the guide 124 and the guide plate 140. When dust or the like attached to the winding shaft 50 falls, the dust is collected in the concave portion 148 to prevent the dust from remaining on the guide 124 and the guide plate 140.
[0038]
By the way, as shown in FIG. 5, the winding shaft 50 is provided with a gear 150 at a distal end projecting sideways from the cover 120. A shaft 152 is wound around the cover 120, and a drive shaft 154 is wound around the base 122 in parallel with the winding shaft 50. A gear 156 attached to one end of the shaft 152 has a winding shaft. And 50 gears 150. The other end of the shaft 152 is provided with a gear 160 provided with a torque limiter 158, which is a driving force reducing unit, and the gear 160 meshes with the gear 162 of the drive shaft 154.
[0039]
The torque limiter 158 causes, for example, a slip when a load greater than a predetermined value acts on the shaft 152, so that an excessive rotational force is not applied to the winding shaft 50.
[0040]
Further, a one-way clutch 164 serving as a disconnection means is mounted in a gear 162 provided on the drive shaft 154. The one-way clutch 164 controls the driving force of the motor 44 to the winding shaft 50 according to the tension of the negative film 12 acting on the winding shaft 50 when the motor 44 is driven to rotate in the rewinding direction of the negative film 12. The transmission is canceled to prevent the winding shaft 50 from rotating by receiving an unnecessarily large driving force from the motor 44.
[0041]
A pulley 166 is attached to the other end of the drive shaft 154, and an endless drive belt 168 is wound around the pulley 166 between the feed roller 42D and the pulley 114 that rotates integrally. Therefore, when the motor 44 is driven, the winding shaft 50 rotates together with the feed rollers 42A to 42D. The winding shaft 50 is set by a gear transmitting the driving force of the motor 44 so that the feed rollers 42A to 42D rotate at a peripheral speed slightly higher than the speed at which the negative film 12 is transported.
[0042]
In the film carrier 10, an opening 54 for printing is formed at the center of the transport path 38, and each image frame 16A of the negative film 12 is positioned in this opening 54 in order. A light beam emitted from a light source (not shown) emitted from below the pedestal 30 passes through the opening 54, passes through the positioned negative film 12, and is imaged on photographic paper by an optical system (not shown). Thus, the image recorded on the negative film 12 is printed on photographic paper. A negative pressure plate 56 is provided between the pedestal 30 and the cover 36, and when the negative film 12 is positioned with respect to the opening 54, the periphery of the image of the negative film 12 is uniformly formed between the negative film 12 and the pedestal 30. To prevent distortion or the like from occurring in the image printed on the printing paper.
[0043]
On the other hand, as shown in FIGS. 2 and 3, the film carrier 10 is provided with a magnetic head unit 58 and a sensor unit 60. The magnetic head unit 58 includes a recording head 62 for writing magnetic information and a reading head 64 for reading magnetic information written, and is attached to the cover 36 so as to face both ends in the width direction of the transport path 38. The pedestal 30 is provided with backup rollers 66 that face the recording head 62 and the reading head 64, respectively. The magnetic recording layers at both ends in the width direction of the negative film 12 conveyed along the conveyance path 38 are provided. Is brought into close contact with each of the recording head 62 and the reading head 64.
[0044]
As shown in FIG. 7, the magnetic head unit 58 is disposed between the opening 54 of the transport path 38 and the cartridge loading unit 32, and positions any image frame 16 </ b> A of the negative film 12 in the opening 54. Sometimes, the reading head 64 is attached to the opening 54 side of the recording head 62 so as to be between the image frames 16A adjacent to each other on the side of the cartridge loading section 32 (left side in FIG. 7) of the opening 54. ing.
[0045]
Thus, if the negative film 12 is fed forward while being rewound to the cartridge 20, the magnetic track 26 of the negative film 12 moves at a constant speed while contacting the recording head 62, and the recording of magnetic information on this magnetic track 26 is performed. I am trying to make it possible. When the negative film 12 is continuously transported at a constant speed without being fed, the read head 64 can read the magnetic information recorded on the magnetic track 26.
[0046]
As shown in FIG. 3, the sensor unit 60 includes a plurality of sensors 72 and 74 that are disposed between the opening 54 and the magnetic head unit 58 and each include a light emitting unit 68 and a light receiving unit 70. I have. In these sensors 72 and 74, one of the light projecting unit 68 and the light receiving unit 70 is provided on the cover 36, and the other is provided on the pedestal 30.
[0047]
As shown in FIGS. 2 and 7, the sensors 72 are disposed opposite to both ends in the width direction of the transport path 38, and the perforations 24 and the around perforations 14 </ b> A and 18 </ b> A formed on the negative film 12 are provided. To detect. When optical information such as a bar-coded DX code is recorded on the negative film 12, the optical information can be read. Further, the sensor 74 is arranged along the width direction of the transport path 38 and is for detecting an image of the negative film 12 passing through the transport path 38.
[0048]
As shown in FIGS. 1 to 3, the film carrier 10 is provided with a film insertion port 86 in the cartridge loading section 32 and a film discharge port 88 in the film accommodating section 34. It is also possible to process a so-called strips negative film 12 that is not accommodated.
[0049]
At this time, an insertion sensor 90 is provided in the film insertion port 86, and when the film carrier 10 detects the leading end of the negative film 12 fed from the film insertion port 86 to the transport path 38, the strips negative film When it is determined that the negative film 12 is to be processed, the solenoid 132 of the film accommodating section 34 is driven to switch the transport path of the negative film 12 to the discharge path 88.
[0050]
Next, the operation of the present embodiment will be described.
In the film carrier 10, when the cartridge 20 containing the negative film 12 is mounted in the cartridge loading section 32, the drive shaft 102 is engaged with the spool shaft 22 of the cartridge 20, and the driving force of the motor 40 is applied to the spool shaft 22. Be able to communicate. Thereafter, when it is confirmed that the negative film 12 accommodated in the cartridge 20 has been developed, for example, by displaying a predetermined position of the cartridge 20 or the like, the feeding of the negative film 12 from the cartridge 20 and the conveyance path 38 Of the negative film 12 is started.
[0051]
That is, the motors 40 and 44 are driven to send out the negative film 12 from the cartridge 20, and the negative film 12 is conveyed at a constant speed along the conveyance path 38 while being pulled out to the conveyance path 38, and is transferred to the film storage section 34. Send in.
[0052]
At this time, the motor 40 is rotating the spool shaft 22 at a peripheral speed lower than the transport speed of the negative film 12 in the transport path 38, and when the transport of the negative film 12 by the feed roller 42A is started, the torque limiter 104 By rotating the drive shaft 40A of the motor 40 and the spool shaft 22 relatively, the spool shaft 22 rotates at a peripheral speed that matches the transport speed of the negative film 12 in the transport path 38, and the speed difference makes the negative film 12 unnecessary. High tension does not act.
[0053]
In the film carrier 10, magnetic information recorded on the magnetic tracks 26 of the negative film 12 is read by the read head 64 of the magnetic head unit 58.
[0054]
On the other hand, in the film accommodating section 34, the drive of the motor 44 in the pull-out direction of the negative film 12 from the cartridge 20 is transmitted, and the winding shaft 50 is rotated at a peripheral speed higher than the transport speed of the negative film 12 in the transport path 38. Driven. Here, when the negative film 12 conveyed through the conveyance path 38 is fed into the film accommodating portion 34, first, the leading end of the negative film 12 is wound by the guide plate 128 with the guide roller 52 provided on the guide plate 128. It is guided between the shaft 50 and is sandwiched between the guide roller 52 and the winding shaft 50. At this time, since the force of the guide roller 52 pressing the peripheral surface of the winding shaft 50 is relatively weak, the leading end of the negative film 12 is reliably sandwiched between the guide roller 52 and the winding shaft 50.
[0055]
Thereafter, the leading end of the negative film 12 moves while receiving the frictional force generated between the negative film 12 and the peripheral surface of the winding shaft 50, and is immediately guided by the guide plate 140, and the guide roller 52 at the leading end of the guide plate 140 and the guide roller 52. It is sandwiched between the winding shaft 50. Also at this time, since the guide roller 52 by the tension coil spring 142 suppresses the pressing force for pressing the peripheral surface of the winding shaft 50, the leading end of the negative film 12 is in contact with the guide roller 52 of the guide plate 140 and the winding shaft. 50 is securely sandwiched.
[0056]
The leading end of the negative film 12 wound around the winding shaft 50 in this manner is held down on the winding shaft 50 by the intermediate portion of the negative film 12 itself which is newly fed into the film accommodating portion 34, so that the winding is reliably performed. It is wound on a take-up shaft 50.
[0057]
In this way, by disposing at least two or more guide rollers 52 around the winding shaft 50 and sandwiching the negative film 12 with the winding shaft 50, each of the guide rollers 52 The negative film 12 can be reliably wound on the winding shaft 50 even if the pressing force for pressing the film 12 against the winding shaft 50 is small.
[0058]
On the other hand, when the negative film 12 is wound around the winding shaft 50, the winding shaft 50 rotates at a peripheral speed higher than the transport speed of the negative film 12 in the transport path 38. As a result, it is pulled in the direction opposite to the rotation direction, and the rotation torque increases. On the other hand, the driving force is transmitted to the winding shaft 50 via the torque limiter 158 provided on the gear 160 and the one-way clutch 164 provided on the gear 162. The rotation speed (peripheral speed) decreases, and the negative film 12 rotates at a peripheral speed corresponding to the transport speed of the transport path 38 with a predetermined tension applied to the negative film 12.
[0059]
As a result, the winding shaft 50 applies unnecessarily large tension when winding the negative film 12, thereby preventing the negative film 12 from being tightly wound or damaged. The transportability is not affected, and the negative film 12 can be reliably wound into the film accommodating portion 34.
[0060]
In the film carrier 10, once the negative film 12 pulled out from the cartridge 20 is wound and housed in the film accommodating portion 34, the motors 40 and 44 are rotated in reverse to pull out the negative film 12 from the film accommodating portion 34. Feed and transport. At this time, the image recorded on each image frame 16A of the negative film 12 is printed on photographic paper. In the film carrier 10, when the negative film 12 is transported by frame, the recording head 62 of the magnetic head unit 58 writes magnetic information on the magnetic tracks 26 of the negative film 12.
[0061]
At the time of frame transport of the negative film 12, in the film accommodating section 34, the torque limiter 158 blocks transmission of the driving force of the motor 44 to the winding shaft 50. It rotates in accordance with being pulled out to the transport path 38, and does not apply unnecessary tension to the negative film 12 on the transport path 38, thereby enabling highly accurate transport of the negative film 12.
[0062]
On the other hand, since the torque limiter 104 is provided between the motor 40 and the drive shaft 102 also in the cartridge loading section 32, when the negative film 12 is wound around the spool shaft 22, an excessively large tension is applied to the negative film 12. Since the tightening does not occur and the negative film 12 in the transport path 38 is not strongly pulled, accurate frame-feed transport of the negative film 12 in the transport path 38 is enabled.
[0063]
As described above, in the film carrier 10, when the negative film 12 is pulled out from the cartridge 20 and wound on the winding shaft 50, the negative film 12 wound on the winding shaft 50 is also transferred to the spool shaft 22. Even when the film is wound, the negative film 12 can be transported smoothly, and the negative film 12 can be transported with high precision without applying an unnecessarily large tension to the negative film 12. Has become.
[0064]
The present embodiment (first embodiment) is an example of a film carrier to which the present invention is applied, and does not limit the configuration of the present invention. The present invention can have various configurations. Hereinafter, another embodiment of the transport mechanism of the negative film 12 will be described with reference to FIGS. FIGS. 8 to 12 each show a schematic configuration of the transport mechanism. The transport mechanism is basically the same as that of the first embodiment. For example, the feed rollers 42A to 42D are omitted as the feed rollers 42.
[0065]
FIG. 8 shows a schematic configuration of a film carrier transport mechanism 170 as a second embodiment of the present invention.
[0066]
In this transport mechanism 170, a drive shaft 172 that engages with the spool shaft 22 of the cartridge 20 is connected to a drive shaft 40 </ b> A of the motor 40 via a torque limiter 174. Thus, when the spool shaft 22 receives the driving force of the motor 40 and tries to pull the negative film 12 more than necessary, the torque limiter 174 relatively rotates the drive shaft 40A and the spool shaft 22, and the spool shaft 22 This prevents an unnecessary tension from being applied to the negative film 12.
[0067]
The driving force of the motor 44 is transmitted to the pulley 166 and transmitted to the winding shaft 50 via the one-way clutch 176 and the torque limiter 178. In the one-way clutch 176, teeth 180A and 182A formed on the pair of clutch plates 180 and 182 in a predetermined direction are engaged with each other by the urging force of urging means (not shown).
[0068]
For this reason, the clutch plates 180 and 182 of the one-way clutch 176 rotate integrally when the take-up shaft 50 relatively rotates in the feeding direction of the negative film 12 (the direction opposite to the take-up direction, the direction of the arrow Ba). When relative rotation is performed in a direction opposite to the direction with a predetermined rotational force or more, the clutch plates 180 and 182 are separated from each other to enable relative rotation against the urging force of the urging means.
[0069]
Even with the use of the transport mechanism 170 configured as described above, substantially constant tension can be applied to the negative film 12 wound around the winding shaft 50 as in the first embodiment described above. Smooth winding and feeding, and high-precision conveyance of the negative film 12 in the conveyance path 38 are possible.
[0070]
FIG. 9 shows a film carrier transport mechanism 190 applied to the third embodiment of the present invention. In the third embodiment, the same components as those in the first or second embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0071]
In this transport mechanism 190, a gear 192 provided on a drive shaft 192 that engages with the spool shaft 22 of the cartridge 20 meshes with a gear 196 attached to a drive shaft 40 </ b> A of the motor 40 via a one-way clutch 176. . The drive shaft 192 is connected to a pulley 198 around which the drive belt 118 (or 168) is wound via a one-way clutch 176 and a torque limiter 174, and is rotatable by the driving force of the motor 44.
[0072]
In the transport mechanism 190 configured as described above, when the negative film 12 is wound on the winding shaft 50, that is, when the negative film 12 is pulled out from the cartridge 20, first, the rotation speed of the spool shaft 22 by the motor 40 is low. Therefore, the rotational force of the motor 44 is not transmitted to the spool shaft 22, and the spool shaft 22 is rotated by the driving force of the motor 40 to send out the negative film 12 from the cartridge 20.
[0073]
Thereafter, when the transport of the negative film 12 by the feed roller 42 is started, the peripheral speed of the spool shaft 22 increases, so that the motor 40 is disconnected from the drive shaft 192, and the spool shaft 22 receives the driving force of the motor 44. Rotate. Also at this time, the torque limiter 174 connecting the drive shaft 192 and the motor 44 and the one-way clutch 176 control the transmission of the driving force to the spool shaft 22, and the spool shaft 22 applies unnecessary tension to the negative film 12. To prevent them from getting lost.
[0074]
Further, when the negative film 12 is wound around the spool shaft 22 of the cartridge 20, the motor 40 rotates the spool shaft 22 at a high rotation speed. 22 is capable of winding the negative film 12 while applying a substantially constant tension to the negative film 12, and the transport mechanism 190 can smoothly and accurately transport, pull out, and draw the negative film 12 similarly to the above-described embodiment. Winding is possible.
[0075]
10 and 11 show a schematic configuration of a film carrier transport mechanism 200 as a fourth embodiment of the present invention. FIG. 10 shows a case where the negative film 12 is pulled out from the cartridge 20, and FIG. 11 shows a case where the negative film 12 is rewound into the cartridge 20.
[0076]
As shown in FIGS. 10 and 11, gears 204 and 206 are attached to the drive shaft 202 that engages with the spool shaft 22 of the cartridge 20. One of the gears 204 meshes with a gear 210 to which a small-diameter gear 208 is attached, and the other gear 206 meshes with a gear 214 to which a gear 212 is attached via a one-way clutch 176. A small-diameter gear 216 and a larger-diameter gear 218 than the gear 216 are attached to a pulley 198 around which the drive belt 118 is wound.
[0077]
As shown in FIG. 10, in the transport mechanism 200, when the negative film 12 is pulled out from the cartridge 20, the gears 216 and 212 are engaged with each other, and as shown in FIG. 11, the negative film 12 is rewound to the cartridge 20. At times, the gear 218 and the gear 208 mesh with each other so that the driving force of the motor 44 is transmitted to the spool shaft 22.
[0078]
At this time, the gear 216 has a small diameter, and the gear 218 having a larger diameter than the gear 216 meshes with the gear 208 having a smaller diameter. Therefore, when the negative film 12 is pulled out from the cartridge 20, the rotation speed of the spool shaft 22 becomes lower. When the negative film 12 is rewound on the spool shaft 22, the rotation speed of the spool shaft 22 increases. The change of meshing of the gears can be easily achieved by providing a mechanism for integrally moving the gears 216 and 218 in the axial direction by a driving means such as a solenoid.
[0079]
In the transport mechanism 200 configured as described above, the negative film 12 can be transported with high precision as in the above-described embodiments, and the negative film 12 is wound around the winding shaft 50 and the spool shaft 22. Sometimes, it can be wound up smoothly with a substantially constant tension. Further, in the transport mechanism 200, the spool shaft 22, the feed roller 42, and the winding shaft 50 can be rotationally driven by a single driving unit.
[0080]
FIG. 12 shows a schematic configuration 220 of a transport mechanism of a film carrier as a fifth embodiment of the present invention. In the fifth embodiment, the same components as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof is omitted.
[0081]
In the transport mechanism 220, clutch parts 222 and 224 are provided instead of the combination of the one-way clutch 176 and the torque limiter 174 of the transport mechanism 190 described above. In the clutch portions 222 and 224, a flange 232 is disposed so as to face clutch plates 228 and 230 in which ratchet teeth 226 are formed in different directions. Each flange 232 is urged toward the clutch plates 228 and 230 by the urging force of the compression coil spring 234.
Ratchet pawls 236 and 238 that engage with the ratchet teeth 226 are attached to the flanges 232 of the clutch parts 222 and 224. Each of the ratchet pawls 236 and 238 has an intermediate portion pivotally supported by the flange 232 and has its rotation restricted by a pin 240.
[0082]
In the transport mechanism 220 configured as described above, similarly to the transport mechanism 190 described above, when the negative film 12 is pulled out from the cartridge 20, the rotation speed of the spool shaft 22 by the motor 40 is initially low, The force is separated by the clutch unit 224, and the spool shaft 22 is rotated by the driving force of the motor 40 to send out the negative film 12 from the cartridge 20.
[0083]
Thereafter, when the feeding of the negative film 12 by the feed roller 42 is started, the drive shaft 192 is disconnected from the motor 40 by the one-way clutch 176, and the ratchet pawl 238 of the clutch portion 234 engages with the ratchet teeth 226 of the clutch plate 230. In addition, the driving force of the motor 44 is transmitted to the spool shaft 22, but the ratchet pawl 238 separates from the ratchet teeth 226 against the urging force of the compression coil spring 234 according to the load, and the tension of the negative film 12 exceeds a predetermined value. Is prevented from working.
[0084]
Also, in the clutch section 222, similarly to the clutch section 224, the winding shaft 50 is prevented from applying a predetermined tension or more to the negative film 12, and the transport mechanism 220 is also similar to the other embodiments described above. In addition, the negative film 12 can be transported with high precision, and the negative film 12 can be smoothly pulled out from the cartridge 20 and rewound.
[0085]
【The invention's effect】
As described above, in the present invention, at least two guide rollers are opposed to the peripheral surface of the winding shaft, and the photographic film is pressed against the winding shaft by the guide rollers. There is no need to strongly press the photographic film on the take-up shaft, and the photographic film can be reliably wound around the take-up shaft.
Further, in the present invention, since the peripheral surface of the winding shaft can be easily opened, cleaning of the peripheral surface of the winding shaft and the like can be simplified and the photographic film can be reliably wound.
[0086]
Further, in the present invention, the photographic film is not loosened when the photographic film is wound around the winding shaft, and the tension is not given more than a predetermined value. It can be wound up and has an excellent effect that the operation of printing an image recorded on a photographic film on photographic paper can be performed smoothly.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a film carrier applied to the present embodiment.
FIG. 2 is a plan view of a main part showing a pedestal of a film carrier.
FIG. 3 is a schematic cross-sectional view of a film carrier along a negative film transport direction.
FIG. 4A is a schematic plan view showing a negative film mounted on a film carrier, and FIG. 4B is a schematic plan view showing a state where a part of the negative film is pulled out from a cartridge.
FIG. 5 is a schematic configuration diagram illustrating a transport mechanism according to the first embodiment.
FIG. 6A is a schematic side view of the film accommodating section as viewed from the transport direction of the negative film, and FIG. 6B is a schematic side view showing a state where the cover is opened.
FIG. 7 is a schematic plan view showing a relative position between an opening for printing and a magnetic head portion.
FIG. 8 is a schematic configuration diagram illustrating a transport mechanism according to a second embodiment.
FIG. 9 is a schematic configuration diagram illustrating a transport mechanism according to a third embodiment.
FIG. 10 is a schematic configuration diagram illustrating a transport mechanism according to a fourth embodiment.
FIG. 11 is a schematic configuration diagram illustrating a transport mechanism according to a fifth embodiment.
FIG. 12 is a schematic configuration diagram illustrating a transport mechanism according to a sixth embodiment.
[Explanation of symbols]
10 Film carrier
12 Negative film (photographic film)
20 cartridges
22 spool shaft
32 Cartridge loading section
34 Film storage
38 transport path
40, 44 motor
42, 42A-42D Feed roller
50 winding shaft
52 Guide roller
100, 170, 190, 200, 220 transport mechanism
120 Cover
122 Base
128, 140 Guide plate
142 Extension coil spring
158, 178 Torque limiter
164, 176 one-way clutch
222 clutch part

Claims (3)

When an image recorded on a photographic film wound up in a cartridge and stored in a cartridge is arranged at a predetermined printing position, the photographic film drawn from the cartridge is moved along a transport path provided with the printing position. A film carrier wound around a winding shaft of a film accommodating section.
A guide roller that presses the photographic film toward the winding shaft,
Guide means for guiding the photographic film between the winding shaft and the guide roller,
A film carrier characterized in that a peripheral surface of the winding shaft can be opened by moving the guide means and the guide roller in a direction away from a peripheral surface of the winding shaft. The film accommodating portion surrounds the winding shaft between the base portion and the base portion by pivotally supporting the winding shaft, and is rotated in a direction away from the base portion to thereby rotate the winding shaft. The film carrier according to claim 1, further comprising: a cover portion capable of opening a base-side peripheral surface. When an image recorded on a photographic film wound up in a cartridge and stored in a cartridge is arranged at a predetermined printing position, the photographic film drawn from the cartridge is moved along a transport path provided with the printing position. A film carrier that is once wound around a winding shaft of a film storage section.
Driving means for driving the winding shaft of the film storage unit in the winding direction of the photographic film,
A driving force reducing unit that is provided between the driving unit and the winding shaft and that suppresses a driving force transmitted from the driving unit to the winding shaft when a rotation torque of the winding shaft is increased;
A connection release unit that is provided between the driving force reducing unit and the driving unit and that cancels transmission of the driving force when receiving a load equal to or more than a predetermined value;
A film carrier comprising:

Images