JPH09127619A - Film carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film carrier capable of feeding even a final frame to an image reading position. SOLUTION: This film carrier is provided with a cartridge holding means holding a cartridge 60 in which film is housed, a carrying means 67 holding the film in a thickness direction and carrying the film in a longitudinal direction, and a window 50a for reading the image information recorded on the film. In such a case, a distance L between the end side of the window 50a on the cartridge holding part side and the entrance for the cartridge 60 is set shorter than a film trailer formed at the terminal part of the film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film carrier provided in an image reading apparatus or the like and driving a desired frame of a set film to a predetermined position.

[0002]

2. Description of the Related Art Conventionally, a film carrier used in an image reading apparatus is set with a film cut into 6 or 4 frames.

Then, the desired frame in the film is positioned at the image reading position and the image is read.

[0004]

The film set in the conventional film carrier is a strip-shaped film cut into 6 or 4 frames, and by sandwiching and transporting the film, a desired frame is placed at the reading position. Could be positioned.

In recent years, a system has been proposed in which a developed film is stored in a cartridge and returned. In a film carrier compatible with such a system, a mode in which a cartridge is set and a film is pulled out from the cartridge is considered.

However, since the cartridge is fixed, if the cartridge and the reading position are separated,
There is a possibility that the last frame may not be delivered to the image reading position. The present invention has been made in view of the above problems, and an object of the present invention is to provide a film carrier that can be extended to the image reading position up to the final frame.

[0007]

A film carrier of the present invention which solves the above-mentioned problems, has a cartridge holding means for holding a cartridge containing a film and a film in the thickness direction, and conveys the film in the longitudinal direction. A film carrier having a conveying means and a window for reading image information recorded on the film, wherein a distance between an edge of the window on the side of a cartridge holding portion and an inlet / outlet of the cartridge is formed at a film end portion. It is shorter than the film trailer.

By making the distance between the end of the window on the side of the cartridge holding section and the entrance / exit of the cartridge shorter than that of the film trailer formed at the end of the film, the final recorded on the film of the cartridge containing the developed film. You can even read frame images.

Here, it is desirable that the conveying means is constituted by roller means. That is, since the conveying means is constituted by the roller means, compared to other conveying means, for example, a belt conveying means of a type in which the film is pressed against the fixed guide member by a commonly used belt to convey the film, the scratches are less likely to occur. It is possible to reduce the occurrence of problems caused by.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view of one unit of a film carrier according to an embodiment of the present invention, FIG. 2 is a perspective view showing the configuration of a scanner provided with the film carrier shown in FIG. 1, and FIG. 3 is an upper surface of the film carrier in FIG. FIG. 4, FIG. 4 is a top view of FIG. 1, FIG. 5 is a bottom view of FIG.
6 is a sectional view taken along line AA in FIG. 1, and FIG. 7 is BB in FIG.
It is sectional drawing.

First, the entire scanner will be described with reference to FIGS. 2 and 3. In these figures, the scanner 5 of this embodiment includes a light source unit 10, a film transport unit 11 that transports the film 4, and a detection unit 12 that receives transmitted light from the film 4 and generates an analog electric signal. It is divided into two parts.

In the light source unit 15, 15 is a light source such as a halogen lamp, 16 is an endothermic filter that absorbs heat generated in the light source 15, and 18 is diffused reflection of the light emitted from the light source 15 and linear from the slit 17. It is a light diffusion box that emits light.

In the film transport unit 11, a main scanning stage 21 is provided so as to be movable in the direction of arrow A,
Reference numeral 22 denotes a film carrier which is provided on the main scanning stage 21, has a cartridge set therein, and holds and conveys the film 4 from the cartridge in the direction of arrow I.

In the detector 12, 25 is a lens for converging the transmitted light transmitted through the film 4 sandwiched by the film carrier 22, and 26 is a lens for converging the transmitted light of the film 4 converged by the lens 25 to generate an analog image signal. Do
It is a CCD line sensor. The lens 25 and the CCD line sensor 26 are integrally driven in the optical axis direction by an autofocus mechanism (not shown).

Next, the drive mechanism of the main scanning stage 21 of the film transport unit 11 will be described with reference to FIG. On the base of the scanner, along the transport direction of the film 4,
First and second guide rails 31, 3 having a circular cross section
2 are arranged in parallel.

A first slider 37 slidably engaged with the first guide rail 31 is provided on the surface of the main scanning stage 21 along the first guide rail 31 along the second guide rail 32. Second and third sliders 38 and 39, which are slidably fitted to the second guide rail 32, are attached to the respective surfaces, and the main scanning stage 21
Is linearly movable only along the first and second guide rails 31, 32.

Further, a rack plate 46 is provided between the second and third sliders 38, 39 of the main scanning stage 21. On the other hand, the base is rotatably provided with a pinion 41 which meshes with the rack plate 46 and is rotationally driven by a stepping motor and a reduction gear train (not shown). By driving the stepping motor (not shown), the main scanning stage 21 Are driven along the first and second guide rails 31, 32.

Next, the film carrier 22 will be described with reference to FIGS. In these drawings, the film carrier 22 is a first carrier provided so as to sandwich the film 4.
It is composed of a unit 50 and a second unit 51. The first unit 50 and the second unit 51 include a window (opening) 5 through which the linear light emitted from the light diffusion box 16 passes.
0a and 51a are opened respectively.

First unit 50 and second unit 51
The opposite surface of the film is mirror-finished, and the film 4 is conveyed.
A transport plate 52 and a transport plate 65 (the transport plate 65 is not shown) which can be slidably contacted are provided near the upper end and the lower end.

At one end of the film carrier 22,
A cartridge holding portion 61 is formed in which a cartridge 60 that rotatably supports a spool (shaft) to which the end of the film 4 is attached is formed. The cartridge 60 includes the first and second units 50, 51.
It can be loaded from the outside of the film carrier 22 through a lid 55 that is openably and closably provided on the upper surface of one end of the film carrier 22.

In the present embodiment, as shown in FIG. 1, the distance L between the film inlet / outlet 60a of the cartridge 60 held by the cartridge holding portion 61 and the end face of the window 50a on the side of the cartridge holding portion is the film 4 The trailer formed at the end of the cartridge (when the film is completely pulled out from the cartridge 60, the image is recorded from the end side of the end of the photographable frame area located at the end to the film entrance 60a of the cartridge 60). It is designed to be shorter than the part that is not shown.

A shaft 63 that engages with the spool of the cartridge 60 and is rotatable integrally with the spool is provided on the bottom surface of the cartridge holding portion 61. A gear 64 is fixed to the shaft 63, and further,
A gear 65 rotatably provided on the main body side of the first unit 50 meshes with the gear 64.

The shaft 63, the gear 64, and the gear 65 form a spool drive portion 66. On both sides of the window 50a, the first for holding and transporting the film 4 is provided.
A film transport section 67 and a second film transport section 68 are provided.

The film transport sections 67 and 68 project to the facing surfaces of the units 50 and 51 and are provided so that the film 4 can be held therebetween.
It is composed of Then, of the roller pair 69, 70 and the roller pair 71, 72, a driving force acts on the roller 69, 71 provided on the first unit 50 side, and the roller 70, 72 provided on the second unit 51 side. When the film 4 is interposed between the rollers, through the film 4,
If the film 4 is not present, it can be driven by directly pressing the rollers 69 and 71.

A first drive motor 75 is provided below the other end of the film carrier 22. A pinion 76 is fixed to the output shaft of the first drive motor 75.

A gear portion 7 is rotatably provided at a lower portion of the first unit 50, and has a gear portion 7 meshing with a pinion 76 on a base end side.
7a and a pulley portion 77b on the tip side thereof.

Reference numeral 78 denotes a pulley fixed to a lower portion of a shaft 79 rotatably provided on the first unit 50 via two bearings 151 fixed to the first unit 50 by two bearing holders 150. The roller 69 is fixed, fixed to the lower portion of a shaft 81 rotatably provided in the first unit 50 via two bearings 153 fixed by two bearing holders 152, a gear portion 80a in the upper portion, and a pulley in the lower portion. A gear pulley 82 having a portion 80b formed therein is provided near the pulley 78, and is a pulley that gives the pulley 78 a predetermined angle of inclination. A belt 83 is wound around the pulley portion 77b of the gear pulley 77, the pulley 78, the pulley 82, and the pulley portion 80b of the gear pulley 80, and the first drive motor 75 causes the roller 69 of the first film transport portion 67 and The roller 71 of the second film transport unit 68 is adapted to be driven.

The spool drive unit 66 is driven via a planetary gear mechanism 90 provided between the gear pulleys 80. Next, the planetary gear mechanism 90 will be described. The planetary gear mechanism 90 of the present embodiment is provided with a sun gear 91 and a shaft 92 of the sun gear 91 rotatably, and has a substantially V-shaped lever 9 having first and second arm portions 93a and 93b.
3 and a second planetary gear 94 that is rotatably provided at the tip of the first arm portion 93a of the lever 93, meshes with the sun gear 91, and meshes with the gear 65 of the spool drive unit 66.
And a first planetary gear 95 that is rotatably provided at the tip of the second arm portion 93b, meshes with the sun gear 91, and meshes with the gear 65 of the spool drive unit 66.

The sun gear 91 is provided between the gear portion 80a of the gear pulley 80 and the sun gear 91, and is driven by the first drive motor 75 by the gear 96 meshing with both.

The second planetary gear 94 is rotatably provided on a shaft 97 erected on a lever 93. Then, the second planetary gear 94 meshes with the sun gear 91 and a large-diameter gear portion 94 as a planetary gear that revolves on the sun gear 91.
a and a small-diameter gear portion 94 that is integrally formed with the large-diameter gear portion 94a and that can mesh with the gear 65 of the spool drive portion 66.
b.

Further, between the flange portion 97a formed at the tip of the shaft 97 and the second planetary gear 94, as a friction member for applying a load to the second planetary gear 94 when the second planetary gear 94 rotates. The spring 98 is inserted.

The first planetary gear 95 is rotatably provided on a shaft 99 provided upright on a lever 93. The second planetary gear 95 has two divided gear parts,
That is, it is composed of a small diameter gear portion 95a as a planet gear that meshes with the sun gear 91 and revolves on the sun gear 91, and a large diameter gear portion 95b that can mesh with the gear 65 of the spool drive portion 66.

Collar 9 formed at the tip of shaft 99
9a and the small diameter gear portion 95a are provided between the small diameter gear portion 95a.
The spring 100 as a friction member that applies a load to the small-diameter gear portion 95a during rotation is inserted into the small-diameter gear portion 95a.
A spring 101 functioning as a friction clutch is inserted between the large diameter gear portion 95b and the large diameter gear portion 95b.

The number of teeth of each gear of the planetary gear mechanism 90 is selected so as to satisfy the following conditions. V3 <V1 <V2 V1: film transport speed of the first film transport unit 67 V2: film transport speed of the spool drive unit 66 driven by the large diameter gear unit 95b of the first planetary gear 95 V3: second planetary A film feeding speed of the spool driving portion 66 driven by the small-diameter gear portion 94b of the gear 94. A step portion is formed on the periphery of the window 50a of the first unit 50, and the step portion is made of a metal capable of contacting the film 4. The plate 161 of is arranged. Further, near the upper edge and the lower edge of the window 50a, a leaf spring 163 is attached to the tip end thereof, which faces the plate 161, and is provided with a pressing plate 162 for pressing the upper and lower portions of the film 4 against the plate 161. It is provided.

The second unit 51 has a second pressure plate 110
It is provided so as to be rotatable around the unit side shaft 164. The distal end of a spring 111 whose base end is locked to the second unit 51 presses on the upper part of the pressure plate 110, and the pressure plate 110 is urged in the direction of the first unit 50 to move the film 4 to the first unit 50. To the plate 161 to ensure the flatness of the film 4.

A second drive motor 112 is provided above the other end of the first unit 50. A pinion 113 is fixed to an output shaft of the second drive motor 112. The rotation of the pinion 113 is caused by the gear 1
It is adapted to be transmitted to the cam gear 118 via a first gear train consisting of 14, 115, 116, 117.

The cam gear 118 includes a gear portion 118a that meshes with the last gear 117 in the gear train, and a cam portion 118.
b. The cam portion 118b can contact the pressure plate 110 through the hole 50b formed in the first unit 50, and separates the pressure plate 110 from the first unit 50.
The shape is set to abut. That is, in FIG. 4, the large-diameter portion (range D in the figure) of the cam portion 118b comes into contact with the pressure plate 110 to separate the pressure plate 110 from the first unit 50, and the other cam portions 118b contact the pressure plate 110. The shape is set so that the pressure plate 110 is brought into contact with the first unit 50 by contacting. For the rotation control of the cam gear 118, for example, a 2-bit sensor provided in the first unit is used to detect the rotation position of the cam gear 118, and the second drive motor 11
This is done by driving 2.

The rotational force transmitted to the cam gear 118 is transmitted to the gear 1 which meshes with the gear portion 118a of the cam gear 118.
It is transmitted to the gear 123 via the second gear train consisting of 19, 120, 121, 122. The shaft of the gear 123 extends downward and is provided in the vicinity of the planetary gear mechanism 90, and a release lever 124 as a lever release means engageable with the lever 93 is fixed.

Next, the operation of the film carrier having the above structure will be described. (1) Prescan When the power of this device is off, the cam portion 118 of the cam gear 118 is
In b, one end D0 of the range D is in contact with the pressure plate 110, and the pressure plate 110 is separated from the first unit 50.

The lid 55 is opened, and the cartridge 60 in which the film is completely wound up is placed in the cartridge holding portion 61.
To load. When the prescan switch is turned on, the first drive motor 75 drives in the direction in which the gear pulley 80 rotates in the arrow prescan direction in FIG.
The film transporting section 67 and the second film transporting section 68 are idly driven at the film transporting speed V1.

At the same time, the sun gear 91 also rotates in the same direction as the gear pulley 80, and the first planetary gear 95, the second planetary gear 94, and the lever 93 also rotate in the same direction, and the small diameter gear of the second planetary gear 94. The portion 94b meshes with the gear 65. Therefore, the driving force of the first drive motor 75 is transmitted to the spool drive unit 66 via the second planetary gear 94, and the film 4 wound around the spool of the cartridge 60 starts to be fed at the speed V3.

Further, the second drive motor 112 also rotates in the direction of the arrow in FIG. 4, and the rotation of the second drive motor 112 passes through the gear train consisting of the gears 119, 120, 121, 122 and 123. Transmitted to the bottom of one unit 50,
The release lever is rotated in the arrow direction (clockwise direction) in FIG.

Here, the motor 112 may detect that the film has reached the roller 69 and drive it. Then, when the leading end of the film 4 delivered from the cartridge 60 reaches the first film transport unit 67, the first film transport unit 67 starts to sandwich and transport the film 4 at the transport speed V1.

Since the transport speed (V1) of the first film transport section 67 is faster than the transport speed (V3) of the spool drive section 66, the twenty-first planetary gear 94 tends to move away from the gear 65. . At the same time, immediately after the first film transport unit 67 starts transporting the film 4, the lever 124 is moved to the lever 93.
Is pressed, the lever 93 is rotated clockwise, the large-diameter gear portion 94b of the second planetary gear 94 is forcibly separated from the gear 65, and the transmission of the rotational force to the spool drive portion 66 is stopped. Then, the driving of the second drive motor 112 is stopped. At this time, the cam gear portion 118 of the cam gear 118 is within the range.
D contacts the pressure plate 110, and the pressure plate 110 becomes the first unit 5
It is held at a position away from zero.

Further, when the leading end of the film 4 reaches the second film transporting section 68, the second film transporting section 68 also starts to transport the film 4 at the transporting speed V1, and the film 4 moves at the constant speed V1. It is nipped and conveyed to the last frame.

At this time, the light emitted from the light source 15 is emitted from the window 5
It passes through the film 4 through 0a, is converged by the lens 25 through the window 51a, and reaches the CCD line sensor 26. Pre-scan is, for example, 128 per frame of film 4.
All the frames are read with a coarse pixel number of about 192 pixels, the image data is stored in the memory, the position of the frames is checked, and the RGB balance and density of the image recorded on the film 4 are checked.

(2) When the RGB balance and density setting up to the final frame of the main scan are completed, the final frame is set in the window 50a. Then, the second drive motor 112 is driven, the cam gear 118 rotates, the small-diameter portion other than the range D of the cam portion 118b contacts the pressure plate 110, the pressure plate 110 moves to the first unit 50, and the flatness of the film 4 is reduced. Is secured.

Then, the lens 25 or the CCD line sensor 26 is moved in the optical axis direction by an autofocus mechanism (not shown) so that the light transmitted through the film 4 is focused on the CCD line sensor 26.

Next, a stepping motor (not shown) is driven, the main scanning stage 21 is driven, and the main scanning is performed. The analog image signal captured by the CCD line sensor 26 is converted into a digital image signal by an AD converter, and a predetermined recording method (for example, JPEG: Joint Phot) is used.
It is recorded on a recording medium by the Graphical Experts Group).

When the main scan for one frame is completed, the pressure plate 110 is released by the second drive motor 112, and the control section rewinds the film 4 by the first drive motor 7
5 is driven in the opposite direction. Then, the first and second
The film transport units 67 and 68 are driven at the film transport speed (V1) in the opposite direction (the film rewinding direction). At the same time, the sun gear 91 also rotates in the same direction as the gear pulley 80, and the first planetary gear 95, the second planetary gear 95, and the lever 9 are rotated.
3 also rotates in the same direction, and the large-diameter gear portion 95b of the first planetary gear 95 meshes with the gear 65. Therefore, the driving force of the first drive motor 75 is transmitted to the spool drive unit 66 via the first planetary gear 95, and the film 4 wound around the spool of the cartridge 60 is driven at a speed V2 (V2> V1). At the beginning of rewinding, one frame of the film 4 is returned, and the main scanning stage 21 returns to the original position to perform the main scanning of the next frame.

At this time, the film transport speed (V1) of the spool drive unit 63 and the film transport speed (V2) of the first film transport unit 67 are set to V2> V1. Spring 101 as a friction clutch in gear 95
Since the small diameter gear portion 95a and the large diameter gear portion 95b are provided,
And slip and absorb the speed difference.

According to the above structure, the following effects can be obtained. (1) By making the distance L between the window 50a and the spool (shaft) of the cartridge 60 shorter than that of the film trailer formed at the end of the film, the last frame recorded on the film of the cartridge 60 containing the developed film is recorded. You can read images.

(2) Since the film carrier 22 as the first conveying means is constituted by the roller means, the occurrence of scratches can be reduced as compared with the other conveying means, for example, the belt conveying means.

(3) Film rewinding When the film 4 is rewound during scanning, all the film transporting units 67 and 68 for holding and transporting the film 4 and the spool driving unit 66 are driven, and the film transporting units 67 and 6
The speed difference between the film transport speed (V1) of No. 8 and the film transport speed (V2) of the spool drive unit 66 is the friction clutch provided between the small diameter gear portion 95a and the large diameter gear portion 95b of the first planetary gear 95. Absorbed by the spring 101 as
The film 4 can be transported smoothly without being damaged.

(4) At film feeding-out Immediately after the film 4 is driven by the first film transport portion 67, the release lever 124 engages with the lever 93, and the large-diameter gear portion 95b of the second planetary gear 94 is formed. Spool drive 66
By forcibly releasing the engagement with the gear 65, the film can be smoothly conveyed regardless of the winding state of the film 4 in the cartridge.

The present invention is not limited to the above embodiment. In the above embodiment, immediately after the film 4 is driven by the first film transport unit 67, the second planetary gear 94
Although a mechanism for driving the release lever 124 for releasing the engagement between the large-diameter gear portion 94b and the gear 65 of the spool drive portion 66 is provided, it is not always necessary.

[0057]

As described above, according to the film carrier of the present invention, the cartridge holding means for holding the cartridge containing the film and the conveying means for nipping the film in the thickness direction and conveying the film in the longitudinal direction. When,
A film carrier having a window for reading recorded image information of the film, wherein a distance between an end side of the window on the side of the cartridge holding portion and an inlet / outlet of the cartridge is set by a film trailer formed at a film end portion. By making the length shorter, the image of the final frame recorded on the film of the cartridge containing the developed film can be read.

Further, since the conveying means is constituted by the roller means, compared with other conveying means, for example, a belt conveying means of a type in which the film is pressed against the fixed guide member by a commonly used belt to convey the film. Therefore, the occurrence of problems due to scratches can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of one unit of a film carrier according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a scanner provided with the film carrier shown in FIG.

FIG. 3 is a top view of the film carrier in FIG.

FIG. 4 is a top view of FIG.

5 is a bottom view of FIG. 1. FIG.

6 is a cross-sectional view taken along the line AA in FIG.

7 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

 4 film 22 film carrier 50a window 60 cartridge 61 cartridge holding part 66 spool drive part 67 first film transport part 68 second film transport part 90 planetary gear mechanism 91 sun gear 93 lever 94 second planetary gear 94a, 95b large diameter part 94b, 95a small diameter part 95 second planetary gear 124 release lever

Claims (2)

[Claims] 1. A cartridge holding means for holding a cartridge containing a film, a feeding means for holding the film in the thickness direction and feeding the film in the longitudinal direction, and a means for reading image information recorded on the film. A film carrier having a window, wherein a distance between an edge of the window on the side of the cartridge holding portion and an inlet / outlet of the cartridge is shorter than that of a film trailer formed at a film end portion. 2. The film carrier according to claim 1, wherein the conveying means is constituted by roller means.