JP3734943B2 - Image reading device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image reading apparatus for reading an image recorded on a film.
[0002]
[Prior art]
In recent years, frame images recorded on photographic film are photoelectrically read by a reading sensor such as a CCD, and image processing such as enlargement / reduction and various corrections is performed on the digital image data obtained by the reading, and the image processing is completed. A technique for forming an image on a recording material with a laser beam modulated based on the digital image data is known.
[0003]
In this way, in the technique of digitally reading a frame image by a reading sensor such as a CCD, in order to realize accurate image reading, the frame image is preliminarily read (so-called pre-scan), and depending on the density of the frame image, etc. The reading conditions (for example, the amount of light applied to the frame image and the charge accumulation time of the CCD) are determined, and the frame image is read again under the determined reading conditions (so-called fine scan).
[0004]
In this case, since pre-scanning may be performed with relatively rough reading accuracy, there is a relatively large permissible range for uneven conveyance speed. On the other hand, since fine scanning requires extremely severe reading accuracy, the allowable range of uneven conveyance speed is extremely narrow.
[0005]
Here, the scanning is performed by main-scanning the reading light of the reading sensor while holding the long film by the film carrier and carrying it at a constant speed while performing sub-scanning.
[0006]
Here, in the case of a film that cannot be automatically fed forward, such as a large-sized film or a piece film, it is necessary to manually position the film at a predetermined position and read an image on the film.
[0007]
In this case, two plates are connected by a hinge or the like to a moving body for moving the film on the optical axis in the sub-scanning direction (main scanning is scanning of the scanner), and a rectangle having the same size as the image size. A film clamp provided with a hole is attached, and the film is sandwiched between the film clamps to move the film in the sub-scanning direction.
[0008]
[Problems to be solved by the invention]
However, when the film is clamped by the film clamp, the positioning of the film is troublesome and the positioning may not be performed accurately. In addition, since the film clamp must be changed every time the film type (size) is different, the conditions (for example, the sub-scanning speed and the magnification) that match the film must be manually reset each time. The work becomes complicated.
[0009]
In view of the above facts, an object of the present invention is to obtain an image reading apparatus that can easily load a film and can improve positioning accuracy.
[0010]
Another object of the present invention is to obtain an image reading apparatus that can easily set image reading conditions suitable for the type of film to be loaded.
[0011]
[Means for Solving the Problems]
  The invention according to claim 1 is an image reading apparatus provided with a line scanner for reading an image recorded on a film, the frame holding the film, and the frame holding the film. A frame support means placed so as to be able to take at least two positions of an image reading position and a film exchange position, and the frame support means can be mounted, and the frame support means can be used for reading for the image reading. Moving means for moving the image on the film so as to correspond from one end to the other end of the image on the film perpendicular to the scanning direction of the line scanner, the moving means on the front table of the line scanner Is exposed and arrangedThe film holding surface of the frame is provided with a focus chart.
[0012]
  According to the first aspect of the present invention, when the film is held on the frame body and placed on the frame body support means, the frame body support means is moved to a film exchange position different from the image reading position. As a result, workability is improved. When the frame is placed on the frame support means, the frame support means is moved by the moving means to the image reading position, and moved in a direction perpendicular to the scanning direction of the line scanner. An image can be read. Further, since the moving means is exposed and arranged on the front table of the line scanner, the frame support means can be easily taken out.
  In addition, by providing a focus chart on the film holding surface of the frame, it is possible to easily adjust the focus even for images that are difficult to focus.
[0013]
  The invention according to claim 2 is an image reading apparatus provided with a line scanner for reading an image recorded on a film, and is provided for each type including the size of the film while holding the film, A frame provided with an identification mark indicating the type, a table placed so that the frame holding the film can take at least two positions of an image reading position and a film exchange position, and a placed frame Recognizing means for recognizing the identification mark, a frame support means that is part of the table and has a light transmissivity, and is a schacus ten provided with a film alignment index on the transmission surface, A frame support means is mountable, and the frame support means is arranged at one end of an image on the film whose reading optical axis for reading the image is perpendicular to the scanning direction of the line scanner. A moving means for moving to corresponding to Luo other end, wherein the moving means is arranged exposed on the front table of the line scannerThe frame support means is provided with a switch for turning on and off the light source of the transmitted light of the shears ten by the movement of the frame, and is turned off by the movement from the image reading position to the film exchange position. It is turned on by moving to the image reading position.
[0014]
According to invention of Claim 2, a film is hold | maintained at a frame and this frame is mounted in the table of a frame support means. Since this table is provided with a shear sten corresponding to the film image surface, it is easy to position the film by transmitted light. Since positioning is performed based on an alignment index, positioning accuracy is good.
[0015]
The film (frame) is exchanged at the film exchange position, moved to the image reading position after completion, and the image is read after the film is positioned.
[0016]
  That is, since the frame member that sandwiches the film via the frame body supporting unit is loaded on the moving unit, the film replacement position and the image reading position can be reduced by moving the frame body through the frame body supporting unit. The position can be taken, the film (frame) can be easily replaced at the film replacement position, and the image can be accurately positioned at the image reading position using the schacus ten. Further, since the moving means is exposed and arranged on the front table of the line scanner, the frame support means can be easily taken out.
  Further, as the frame support means moves, the light source for transmitting the Schacusten is turned on and off, and the lighting of the light source makes it easy to recognize the relative position of the film with respect to the film alignment index.
[0021]
  The invention according to claim 3 is an image reading apparatus provided with a line scanner for reading an image recorded on a film, and is provided for each type including the size of the film while holding the film, A frame provided with an identification mark indicating the type, a table placed so that the frame holding the film can take at least two positions of an image reading position and a film exchange position, and a placed frame Recognizing means for recognizing the identification mark, a frame support means that is part of the table and has a light transmissivity, and is a schacus ten provided with a film alignment index on the transmission surface, A frame support means is mountable, and the frame support means is arranged at one end of an image on the film whose reading optical axis for reading the image is perpendicular to the scanning direction of the line scanner. A moving means for moving to corresponding to Luo other end, wherein the moving means is arranged exposed on the front table of the line scanner,The recognition means recognizes the type of film based on the identification mark, and at least one of the moving speed of the moving means and the reading magnification at the time of image reading is set according to the recognized film type.
[0022]
  According to invention of Claim 3, a film is hold | maintained at a frame and this frame is mounted in the table of a frame support means. Since this table is provided with a shear sten corresponding to the film image surface, it is easy to position the film by transmitted light. Since positioning is performed based on an alignment index, positioning accuracy is good.
  The film (frame) is exchanged at the film exchange position, moved to the image reading position after completion, and the image is read after the film is positioned.
  That is, since the frame member that sandwiches the film via the frame body supporting unit is loaded on the moving unit, the film replacement position and the image reading position can be reduced by moving the frame body through the frame body supporting unit. The position can be taken, the film (frame) can be easily replaced at the film replacement position, and the image can be accurately positioned at the image reading position using the schacus ten. Further, since the moving means is exposed and arranged on the front table of the line scanner, the frame support means can be easily taken out.
  Also,The recognition mark given to the frame is recognized by the recognition means, and the conditions at the time of image reading are changed. For example, in the case of a large size such as a commemorative photo taken with a broni size or the like, the reading speed is slowed down, and in the case of a snapshot such as a 135 size or 240 (APS) size, the scanning speed is increased. Alternatively, the reading magnification is changed. In this way, by assigning identification marks indicating the type of film to the frame, it is not necessary to set conditions each time, and can be set automatically, thereby improving workability.
[0023]
The automatic setting includes, of course, automatically performing the functions of the apparatus, but also includes displaying a set numerical value and inputting a key based on the displayed numerical value.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
First, the digital laboratory system according to the present embodiment will be described.
[0025]
(Schematic configuration of the entire system)
FIG. 1 shows a schematic configuration of a digital lab system 10 according to the present embodiment, and FIG. 2 shows an external appearance of the digital lab system 10. As shown in FIG. 1, the lab system 10 includes a line CCD scanner 14, an image processing unit 16, a laser printer unit 18, and a processor unit 20. The line CCD scanner 14 and the image processing unit 16 include 2 is integrated as an input unit 26 shown in FIG. 2, and the laser printer unit 18 and the processor unit 20 are integrated as an output unit 28 shown in FIG.
[0026]
The line CCD scanner 14 reads a frame image recorded on a photographic film such as a negative film or a reversal film. For example, a 135 size photographic film, a 110 size photographic film, and a transparent magnetic layer are formed. The frame images of the photographic film (240-size photographic film: so-called APS film), 120-size and 220-size (Brownie size) photographic films can be read. The line CCD scanner 14 reads the frame image to be read with the line CCD and outputs image data.
[0027]
When reading images from the above-mentioned different types (sizes) of film, if the film is a long film (including piece film) in which a plurality of image frames are continuously photographed, a film carrier suitable for each is used as the line CCD scanner 14. By setting this position at the reading optical axis position, the film is transported by this film carrier, and a plurality of image frames are sequentially positioned at the reading position, so that a plurality of images can be read automatically and continuously. is there.
[0028]
Here, in the line CCD scanner 14 of the present embodiment, an image is not obtained from a long film as described above, but from a large size film such as a broni size or a piece negative (135 size film cut in units of 6 frames). Will be described as a digital laboratory system 10.
[0029]
The image processing unit 16 receives image data (scanned image data) output from the line CCD scanner 14 and reads image data obtained by photographing with a digital camera and a document (for example, a reflective document) with the scanner. Input image data, computer generated image data, etc. (hereinafter collectively referred to as file image data) from the outside (for example, input via a storage medium such as a memory card or communication) It is also possible to input from other information processing equipment via a line).
[0030]
The image processing unit 16 performs image processing such as various corrections on the input image data, and outputs the image data to the laser printer unit 18 as recording image data. Further, the image processing unit 16 outputs the image data subjected to the image processing to the outside as an image file (for example, outputs it to a storage medium such as a memory card, or transmits it to another information processing device via a communication line). ) Is also possible.
[0031]
The laser printer unit 18 includes R, G, and B laser light sources, irradiates the photographic paper with laser light modulated according to the recording image data input from the image processing unit 16, and performs photographic paper by scanning exposure. Record an image on The processor unit 20 performs color development, bleach-fixing, water washing, and drying on the photographic paper on which an image is recorded by scanning exposure in the laser printer unit 18. As a result, an image is formed on the photographic paper.
[0032]
(Configuration of line CCD scanner)
Next, the configuration of the line CCD scanner 14 will be described. FIG. 3 shows a schematic configuration of the optical system of the line CCD scanner 14. The optical system includes a halogen lamp, a metal halide lamp, and the like, and includes, as an example, a light source 30 that irradiates light to a brownie-sized photographic film 22, and light that irradiates the photographic film 22 on the light emission side of the light source 30. Are sequentially arranged.
[0033]
The photographic film 22 is disposed on the light exit side of the light diffusion box 36 and is conveyed so that the frame image screen is perpendicular to the optical axis.
[0034]
Further, C (cyan), M (magenta), and Y (yellow) dimming filters 114C, 114M, and 114Y are sequentially provided between the light source 30 and the light diffusion box 36 along the optical axis of the emitted light. On the opposite side of the light source 30 with the photographic film 22 interposed therebetween, a lens unit 40 and a line CCD 116 that form an image of light transmitted through the frame image are arranged in this order along the optical axis. In FIG. 3, only a single lens is shown as the lens unit 40, but the lens unit 40 is actually a zoom lens composed of a plurality of lenses.
[0035]
In the line CCD 116, a plurality of CCD cells are arranged in a line along the width direction of the photographic film 22 to be conveyed, and a sensing unit provided with an electronic shutter mechanism is provided in three lines parallel to each other at intervals. In addition, any of R, G, and B color separation filters is attached to the light incident side of each sensing unit (so-called three-line color CCD). The line CCD 116 is arranged such that the light receiving surface of each sensing unit coincides with the image forming point position of the lens unit 40.
[0036]
In addition, a transfer unit is provided in the vicinity of each sensing unit corresponding to each sensing unit, and charges accumulated in each CCD cell of each sensing unit are sequentially transferred via the corresponding transfer unit. . Although not shown, a shutter is provided between the line CCD 116 and the lens unit 40.
[0037]
FIG. 4 shows a schematic configuration of the electrical system of the line CCD scanner 14. The line CCD scanner 14 includes a microprocessor 46 that controls the entire line CCD scanner 14. The microprocessor 46 is connected to a RAM 64 (for example, SRAM) and a ROM 66 (for example, a ROM capable of rewriting stored contents) via a bus 62, and is connected to a motor driver 48. The motor driver 48 has a filter. A drive motor 54 is connected. The filter drive motor 54 can slide the dimming filters 114C, 114M, and 114Y independently.
[0038]
The microprocessor 46 turns on and off the light source 30 in conjunction with turning on and off a power switch (not shown). Further, when reading the frame image (photometry) by the line CCD 116, the microprocessor 46 slides the dimming filters 114C, 114M, 114Y independently by the filter driving motor 54, and the amount of light incident on the line CCD 116. Is adjusted for each component color light.
[0039]
Also, the motor driver 48 moves the lens unit 40 by moving the zoom drive motor 70 and the entire lens unit 40 that change the zoom magnification of the lens unit 40 by relatively moving the positions of the plurality of lenses of the lens unit 40. A lens driving motor 106 that moves the position of the 40 imaging points along the optical axis is connected. The microprocessor 46 uses the zoom drive motor 70 to change the zoom magnification of the lens unit 40 to a desired magnification according to the size of the frame image, whether to perform trimming, or the like.
[0040]
On the other hand, a timing generator 74 is connected to the line CCD 116. The timing generator 74 generates various timing signals (clock signals) for operating the line CCD 116, an A / D converter 82 described later, and the like. The signal output terminal of the line CCD 116 is connected to an A / D converter 82 via an amplifier 76, and the signal output from the line CCD 116 is amplified by the amplifier 76 and converted into digital data by the A / D converter 82. Is done.
[0041]
An output terminal of the A / D converter 82 is connected to an interface (I / F) circuit 90 via a correlated double sampling circuit (CDS) 88. The CDS 88 samples feedthrough data representing the level of the feedthrough signal and pixel data representing the level of the pixel signal, and subtracts the feedthrough data from the pixel data for each pixel. Then, the calculation result (pixel data accurately corresponding to the accumulated charge amount in each CCD cell) is sequentially output to the image processing unit 16 as scan image data via the I / F circuit 90.
[0042]
Since the line CCD 116 outputs R, G, and B photometric signals in parallel, three signal processing systems including an amplifier 76, an A / D converter 82, and a CDS 88 are provided, and an I / F circuit is provided. From 90, R, G, and B image data are output in parallel as scan image data.
[0043]
The motor driver 48 is connected to a shutter drive motor 92 that opens and closes the shutter. The dark output of the line CCD 116 is corrected by the image processing unit 16 at the subsequent stage, but the dark output level can be obtained by the microprocessor 46 closing the shutter when the frame image is not read. .
[0044]
(Configuration of image processing unit)
Next, the configuration of the image processing unit 16 will be described with reference to FIG. The image processing unit 16 is provided with a line scanner correction unit 122 corresponding to the line CCD scanner 14. The line scanner correction unit 122 corresponds to the R, G, and B image data output in parallel from the line CCD scanner 14, and performs signal processing including a dark correction circuit 124, a defective pixel correction unit 128, and a light correction circuit 130. Three systems are provided.
[0045]
The dark correction circuit 124 receives data (data indicating the dark output level of each cell of the sensing unit of the line CCD 116) input from the line CCD scanner 14 in a state where the light incident side of the line CCD 116 is shielded by the shutter. Each pixel is stored and corrected by subtracting the dark output level of the cell corresponding to each pixel from the scan image data input from the line CCD scanner 14.
[0046]
Further, the photoelectric conversion characteristics of the line CCD 116 also vary from cell to cell. The bright correction circuit 130 at the subsequent stage of the defective pixel correction unit 128 reads the adjustment frame image by the line CCD 116 in a state where the adjustment CCD image having the constant density is set on the entire line CCD scanner 14. For each cell based on the image data of the adjustment frame image input from the line CCD scanner 14 (the variation in density for each pixel represented by this image data is caused by the variation in photoelectric conversion characteristics of each cell). A gain is determined, and the image data of the frame image to be read input from the line CCD scanner 14 is corrected for each pixel in accordance with the gain determined for each cell.
[0047]
On the other hand, in the image data of the adjustment frame image, when the density of a specific pixel is significantly different from the density of other pixels, there is some abnormality in the cell corresponding to the specific pixel of the line CCD 116, The specific pixel can be determined as a defective pixel. The defective pixel correction unit 128 stores the address of the defective pixel based on the image data of the adjustment frame image, and the defective pixel data among the image data of the frame image to be read input from the line CCD scanner 14. Generates new data by interpolating from the data of surrounding pixels.
[0048]
Further, since the line CCD 116 has three lines (CCD cell rows) arranged in order along the transport direction of the photographic film 22 with a predetermined interval, each component of R, G, B from the line CCD scanner 14 is arranged. There is a time difference in the timing of starting the output of color image data. The line scanner correction unit 122 delays the output timing of the image data with a different delay time for each component color so that the R, G, and B image data of the same pixel is simultaneously output on the frame image.
[0049]
The output end of the line scanner correction unit 122 is connected to the input end of the selector 132, and the image data output from the correction unit 122 is input to the selector 132. The input terminal of the selector 132 is also connected to the data output terminal of the input / output controller 134, and file image data input from the outside is input to the selector 132 from the input / output controller 134. The output terminal of the selector 132 is connected to the input / output controller 134 and the data input terminals of the image processor units 136A and 136B, respectively. The selector 132 can selectively output the input image data to each of the input / output controller 134 and the image processor units 136A and 136B.
[0050]
The image processor unit 136A includes a memory controller 138, an image processor 140, and three frame memories 142A, 142B, and 142C. Each of the frame memories 142A, 142B, and 142C has a capacity capable of storing image data of a frame image for one frame, and the image data input from the selector 132 is stored in one of the three frame memories 142. However, the memory controller 138 stores the image data in the frame memory 142 so that the pixel data of the input image data is stored in the storage area of the frame memory 142 in a certain order. Control the address.
[0051]
The image processor 140 takes in the image data stored in the frame memory 142, and performs gradation conversion, color conversion, hypertone processing for compressing the gradation of the ultra-low frequency luminance component of the image, and sharpness is enhanced while suppressing grain. Various image processing such as hyper sharpness processing is performed. The processing conditions for the image processing are automatically calculated by an auto setup engine 144 (described later), and image processing is performed according to the calculated processing conditions. The image processor 140 is connected to the input / output controller 134, and the image data subjected to image processing is temporarily stored in the frame memory 142 and then output to the input / output controller 134 at a predetermined timing. Note that the image processor unit 136B has the same configuration as the image processor unit 136A described above, and a description thereof will be omitted.
[0052]
By the way, in this embodiment, the individual CCD images are read twice at different resolutions by the line CCD scanner 14. In the first reading at a relatively low resolution (hereinafter referred to as pre-scan), even if the density of the frame image is extremely low (for example, an overexposed negative image in a negative film), the charge accumulated in the line CCD 116 is saturated. The frame image is read under the reading conditions determined so as not to occur (the amount of light for each of the R, G, and B wavelength ranges of the light irradiating the photographic film, the charge accumulation time of the CCD). Image data (pre-scan image data) obtained by this pre-scan is input from the selector 132 to the input / output controller 134 and further output to the auto setup engine 144 connected to the input / output controller 134.
[0053]
The auto setup engine 144 includes a CPU 146, a RAM 148 (for example, DRAM), a ROM 150 (for example, a ROM whose contents can be rewritten), and an input / output port 152, which are connected to each other via a bus 154.
[0054]
The auto setup engine 144 reads a second relatively high resolution (hereinafter referred to as fine scan) by the line CCD scanner 14 based on pre-scan image data of a plurality of frame images input from the input / output controller 134. The image processing processing conditions for the image data (fine scan image data) obtained by (1) are calculated, and the calculated processing conditions are output to the image processor 140 of the image processor unit 136. In the calculation of the processing conditions of the image processing, it is determined whether or not there are a plurality of frame images obtained by photographing a similar scene from the exposure amount at the time of photographing, the type of photographing light source and other feature amounts, and a plurality of images obtained by photographing the similar scene are determined. When there are two frame images, the processing conditions of the image processing for the fine scan image data of these frame images are determined to be the same or approximate.
[0055]
The optimum processing conditions for image processing also vary depending on whether the image data after image processing is used for recording an image on photographic paper in the laser printer unit 18 or output to the outside. Since the image processing unit 16 includes two image processor units 136A and 136B, for example, when the image data is used for recording an image on photographic paper and is output to the outside, the auto setup engine 144 is used. Calculates the optimum processing conditions for each application and outputs them to the image processor units 136A and 136B. As a result, the image processors 136A and 136B perform image processing on the same fine scan image data under different processing conditions.
[0056]
Further, the auto setup engine 144 is for image recording that defines a gray balance or the like when an image is recorded on photographic paper by the laser printer unit 18 based on pre-scan image data of a frame image input from the input / output controller 134. The parameters are calculated and output simultaneously when outputting the recording image data (described later) to the laser printer unit 18. In addition, the auto setup engine 144 calculates image processing conditions for file image data input from outside in the same manner as described above.
[0057]
The input / output controller 134 is connected to the laser printer unit 18 via the I / F circuit 156. When the image data after image processing is used for recording an image on photographic paper, the image data subjected to image processing by the image processor unit 136 is recorded from the input / output controller 134 via the I / F circuit 156. The data is output to the laser printer unit 18. The auto setup engine 144 is connected to the personal computer 158. When image data after image processing is output to the outside as an image file, the image data subjected to image processing by the image processor unit 136 is output from the input / output controller 134 to the personal computer 158 via the auto setup engine 144. Is done.
[0058]
The personal computer 158 includes a CPU 160, a memory 162, a display 164, and a keyboard 166 (see also FIG. 2), a hard disk 168, a CD-ROM driver 170, a transport control unit 172, an expansion slot 174, and an image compression / decompression unit 176. These are connected to each other via a bus 178. The conveyance control unit 172 is connected to the manual carrier 502 and controls conveyance of the photographic film 22 by the manual carrier 502 (see FIG. 2).
[0059]
Also, a driver (not shown) for reading / writing data from / to a storage medium such as a memory card and a communication control device for communicating with other information processing devices are connected via a personal computer 158 via an expansion slot 174. Connected to. When image data for output to the outside is input from the input / output controller 134, the image data is output to the outside (the driver, the communication control device, etc.) as an image file via the expansion slot 174. When file image data is input from the outside via the expansion slot 174, the input file image data is output to the input / output controller 134 via the auto setup engine 144. In this case, the input / output controller 134 outputs the input file image data to the selector 132.
[0060]
The image processing unit 16 outputs prescanned image data and the like to the personal computer 158, and displays an image obtained by displaying the frame image read by the line CCD scanner 14 on the display 164 or recording it on photographic paper. When the image is estimated and displayed on the display 164 and an image correction or the like is instructed by the operator via the keyboard 166, it can be reflected in the processing conditions of the image processing.
[0061]
(Composition of manual carrier)
6 to 8 show a manual carrier 502 for manual loading according to the present embodiment.
[0062]
The manual carrier 502 has a moving base 504 disposed on the front table of the line CCD scanner 14. The moving base 504 has a base body 506 supported by a pair of shafts 508 and 510 that are parallel to each other. Both ends of the shafts 508 and 510 are fixed to a flange 512 (only one is shown in FIG. 6). For this reason, the base main body 506 is slidable in the axial direction of the shafts 508 and 510.
[0063]
The base main body 506 is provided with a vertical wall portion 518 so as to surround three sides of a mounting table 516 on which a later-described Shakasten table 514 is mounted. The mounting table 516 is provided with a rectangular hole 520 and serves as a transmission hole for the light source 30.
[0064]
The shafts 508 and 510 are pivotally supported by a circular hole 524 provided in a leg portion 522 formed by extending the lower end portion of the vertical wall portion 518.
[0065]
The leg 522 is screwed with a rotating shaft 526 formed with a male screw. Both ends of the rotating shaft 526 are pivotally supported by the flange 512 in the same manner as the shafts 508 and 510. The rotary shaft 526 passes through one flange 512 (the flange 512 shown in FIG. 6) and is connected to a drive shaft of a motor 532 that is a drive source via gears 528 and 530. For this reason, the base body 506 can be moved in the axial direction of the shafts 508 and 510 by rotating the rotary shaft 526 by the driving force of the motor 532.
[0066]
On the mounting table 516, a Schaukasten table 514 is mounted and is slidable.
[0067]
As shown in FIG. 7, guide grooves 534 are formed on the side surface of the shear table 514 from the front side to the back side of the sheet, while the inner peripheral surfaces of the vertical wall portions 518 on both side surfaces of the mounting table 516. A roller 536 is attached.
[0068]
The guide groove 534 is formed with a notch portion 538 that is continuous with the lower surface. By placing the shakasten table 514 on the placing table 516 while making the notch portion 538 and the roller 536 correspond to each other, the roller 536 is provided. Is accommodated in the guide groove 534.
[0069]
Here, by rotating the roller 536 with the driving force of a driving means (not shown), the shear table 514 can be slid in the front-rear direction (front side → back side) of the mounting table 516. It should be noted that the operator may manually slide the driving means without using the driving means. In any case, the sea sten table 514 is slid on the mounting table 516 and at both ends in the sliding direction, the roller 536 has a structure that does not fall off from the notch 538.
[0070]
A rectangular through-hole is provided at the center of the shear sten table 514, and a shear sten 540 is provided. The Schaukasten 540 is milky white and translucent, and vertical and horizontal grids 542 are provided on its surface.
[0071]
For this reason, when the photographic film 22 (actually, the photographic film 22 sandwiched between film clampers 544 described later) is placed on the Schaukasten 540, and light is transmitted from below the Schaukasten 540, the photographic film 22 The arrangement state can be recognized by the relative positional relationship with the scale 542.
[0072]
The front side of the shakasten table 540 is an inclined surface and is provided with a switch 546 for turning on / off a light source for shakasten (in this embodiment, common to the light source 30 for image reading).
[0073]
Further, a plurality of (in this embodiment, five) reading sensors 548 provided on the film clamper 544 for reading the identification code are provided on the far side of the shear table 514. Here, the identification code is a combination of white or black marks. If the combination is five white or black marks as in this embodiment, 2^Five(= 32) Types can be identified.
[0074]
The dimension between the pair of side walls 550 formed on the shakasten table 514 corresponds to the width dimension of the film clamper 544, so that the film clamper 544 is guided to the pair of side walls 550 on the sherka tenten table 514. It is designed to be slid. A stopper 552 is provided on the back side of the shears ten table 514 to limit the sliding amount of the film clamper 544 to the back side. Further, a concave portion 554 is provided at the center of the upper end of the side wall 550, and serves as a relief space for the photographic film 22 (in the case of a piece negative or the like) that protrudes from the film clamper 544.
[0075]
The film clamper 544 has a pair of plate members 556 and 558 connected to each other via a hinge (not shown). As shown in FIG. 6, the film clamper 544 is in two positions: an open state and a closed state in which the plate members 556 and 558 are overlapped with each other. Can take.
[0076]
The base side plate member 556 is provided with a rectangular hole 560 adapted to the film size, and the cover side plate member 558 is provided with a rectangular hole 562 slightly larger than the rectangular hole 560 correspondingly. A focus chart 561 is provided at the periphery of the rectangular hole 560.
[0077]
The base side plate member 556 is provided with a clip 564 so that the photographic film 22 can be temporarily clamped. The cover-side plate member 558 is provided with a rectangular notch 566 adjacent to the rectangular hole 562 to prevent interference with the clip 564 when the pair of plate members 556 and 558 are closed.
[0078]
The focus chart 561 is in a position exposed from the rectangular hole 562 even when the plate members 556 and 558 are closed.
[0079]
In addition, circular grooves 568 are provided at the front side corners (two places) in FIG. 6 of the base side plate member 556, and the bottom surface thereof is formed of a magnetic material. Correspondingly, electromagnets 570 are attached to the upper corners (two places) in FIG. Here, when the pair of plate members 556 and 558 are in the closed state, the photographic film 22 sandwiched between them is not completely sandwiched, and the position thereof can be changed manually. Further, when the electromagnet 570 is energized, the pair of plate materials 556 and 558 are in close contact with each other so that the photographic film 22 is firmly sandwiched.
[0080]
Further, as shown in FIG. 9, five identification marks 572 are provided in white or black on the back surface of the base side plate member 556 and on the cover side plate member 558 side. The identification marks 572 are provided at the same pitch as the arrangement pitch of the reading sensors 548.
[0081]
In the manual carrier 500 having the above configuration, as shown in FIG. 8, the photographic film 22 is temporarily fixed to the base side plate member 556 of the film clamper 544 by the clip 564 ((1) in FIG. 8), and then closed, and the Schaukasten table. It is placed on 514 ((2) in FIG. 8). At this time, since the Schaukasten table 514 is pulled out to the near side in FIG. 6, this placement operation becomes easy. Note that the relative position between the film clamper 544 and the Schaukasten table 514 is always an appropriate position because it is guided by the pair of side walls 550 and the sliding amount is limited by the stopper 552.
[0082]
In this state, the shakasten table 514 is mounted on the mounting table 516 of the base body 506 ((3) in FIG. 8), and is slid along the vertical wall portion 518 (automatic conveyance or driving by driving the roller 536). Then, the Schaukasten switch 546 is turned on, and the light source 30 is turned on.
[0083]
This lighting makes it easy to recognize the relative position of the photographic film 22 with respect to the scale 542, and the operator manually moves the photographic film 22 (the electromagnet 570 is in an off state) and positions it at a normal position.
[0084]
After the positioning is completed, the electromagnet 570 is energized, so that the positioning of the photographic film 22 on the base body 506 is completed with high accuracy.
[0085]
Hereinafter, the operation of the present embodiment will be described with reference to the flowchart of FIG.
First, the film clamper 544 is selected in accordance with the size of the photographic film 22 from which an image will be read.
[0086]
After sorting, the photographic film 22 is positioned almost at a predetermined position and temporarily fixed by the clip 564. The clip 564 is configured to hold the photographic film 22 by the elastic force of the clip 564 itself. However, the clip 564 may be structured to be sandwiched by a spring force. However, it is desirable that the photographic film 22 has a holding force enough to move in a clipped state.
[0087]
When the clip of the photographic film 22 is completed, the cover side plate member 558 is moved so as to cover the base side plate member 556. At this time, there is no interference with the clip 564 due to the notch 566.
[0088]
When the pair of plate members 556 and 558 are overlaid, in this state, a slight gap is generated between them, and the photographic film 22 can be moved manually.
[0089]
The film clamper 544 is placed on the Schaukasten table 514 in the above state (a state in which the pair of plate members 556 and 558 are overlapped). This placement position can be placed at a constant position with high accuracy by the pair of side walls 550 and the stopper 552.
[0090]
At the time of this placement, since the schacus ten table 514 is at the film clamper replacement position (that is, the position pulled out to the front side of the base body 506), the placement work of the film clamper 544 is easily performed.
[0091]
Here, a reading sensor 548 is provided on the shear table 514, and an identification mark 572 provided on the back side of the film clamper 544 is detected. This identification mark 572 is a combination of five white or black, and can identify a maximum of 64 types.
The number of identification marks 572 is not limited to five and may be determined according to the film type. For example, if there are eight types of film, three identification marks 572 are sufficient, and if there are 100 types, six or more are required.
[0092]
When the identification mark 572 is detected by the reading sensor 548, the film type is determined based on the identification mark 572, and the image reading speed and the reading magnification are automatically set.
[0093]
That is, in the case of a large size such as the Broni size, the image reading speed is reduced and the reading magnification is set to the reduction side. In the case of a small size such as 135 size, the image reading speed is increased and the reading magnification is set to the enlargement side.
[0094]
Instead of automatic setting, an appropriate numerical value may be displayed, and the operator may enter a key by looking at this display.
[0095]
Next, the shakasten table 514 is slid to the back side of the base body 506. This sliding drives the roller 536. The roller 536 moves relative to the guide groove 534 (actually, the guide groove 534 moves), and can position the shears table 514 to a predetermined position (image reading position) of the base body 506. Along with this movement, the Schaukasten switch 546 is turned on and the light source 30 is turned on.
[0096]
Since the light from this light source passes through the Schaukasten 540 and reaches the photographic film 22, the relative positional relationship between the position of the photographic film 22 and the scale 542 can be easily recognized by visual observation from above. If it is deviated, the photographic film 22 is in a temporarily fixed state, and therefore the positioning can be performed easily and accurately by gripping and moving the photographic film 22.
[0097]
When the positioning is completed, the electromagnet 570 is energized, the pair of plate members 556 and 558 of the film clamper 544 are brought into close contact, and the photographic film 22 can be firmly held and held.
[0098]
After sandwiching and pressing the photographic film 22 by the pair of plate members 556 and 558, the rotating shaft 526 is rotated, and the base body 506 is reciprocated once. Press canning is performed during the first round trip. Next, the rotating shaft 536 is rotated again, and the base body 506 is reciprocated once. Fine scanning is performed during the outward trip of the second round. At this time, if it is difficult to adjust the focus of the image, the focus adjustment may be performed using the focus chart 561.
[0099]
Next, when the electromagnet 570 is de-energized and a gap is generated between the pair of plate members 556 and 558, the roller 536 is driven (or manually) to pull out the shears ten table 514 and replace it with the next film clamper 570. Alternatively, the photographic film 22 for newly reading an image is attached to the loaded film clamper 570, and then loaded again). When the Shercus Ten Table 514 is pulled out, the Shercus Ten Switch 546 is turned off, so that the light source 30 is turned off.
[0100]
Here, in the present embodiment, an example in which the Broni sized photographic film 22 is applied is shown, so that the film clamper 544 is replaced every time. However, in the case of a piece negative, the Shakasten table 514 is used as the base body. With the positioning at the reading position on the line 506, the positioning is performed by manually moving to the next frame, and the electromagnet 570 is energized again.
[0101]
In this embodiment, the photographic film 22 is manually positioned using the manual carrier 502, and the base body 506 is reciprocated by the driving force of the motor 532 during subsequent press scanning and fine scanning. However, as shown in FIG. 10, press canning may be performed by attaching a handle 590 to one end of the rotating shaft 526 and rotating the handle 590. At this time, if the mainspring 592 is attached to the handle 590, energy is stored at the time of press scanning, and fine scanning is performed by the return path conveyance when the handle 590 is opened (at the end of press scanning), at the time of fine scanning, The base body 506 can be transported at a constant speed.
[0102]
【The invention's effect】
  As described above, the invention described in claim 1 has an excellent effect that the film can be easily loaded and the positioning accuracy can be improved.
  Further, even if the image is difficult to focus, focus adjustment can be easily performed.
[0103]
  According to the second aspect of the present invention, the film (frame body) can be easily replaced at the film replacement position, and the positioning can be performed with high accuracy using the Schaukasten at the image reading position.
  Further, by turning on the light source for transmitting the Schaukasten, it becomes easy to recognize the relative position of the film to the film alignment index.
[0106]
  According to the third aspect of the present invention, the film (frame body) can be easily exchanged at the film exchange position, and the positioning can be performed with high accuracy using the shear sten at the image reading position. Also,Image reading conditions suitable for the type of film to be loaded can be easily set.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a digital laboratory system according to an embodiment of the present invention.
FIG. 2 is an external view of a digital laboratory system.
FIG. 3 is a schematic configuration diagram of an optical system of a line CCD scanner.
FIG. 4 is a schematic configuration diagram of an electrical system of a line CCD scanner.
FIG. 5 is a schematic configuration diagram of an image processing unit.
FIG. 6 is a perspective view showing a schematic configuration of a manual carrier according to the present embodiment.
FIGS. 7A and 7B show the movement state of the base body of the manual carrier according to the present embodiment and the schacus tentable, where FIG. 7A is when pulled out (film replacement position), and FIG. 7B is the storage well position (image reading position). FIG.
FIG. 8 is a schematic view showing a flow of loading a photographic film by a manual carrier.
FIG. 9 is a bottom view of the film clamper.
FIG. 10 is a perspective view of a manual carrier according to a modified example of the present invention.
[Explanation of symbols]
10 Digital Lab System
14 line CCD scanner (equivalent to scanning position)
22 Photo film
502 Manual carrier
502 Moving base (moving means)
506 Base body
514 Shakasten table (frame body support means)
540 Sherkasten
526 Rotating shaft
532 motor
542 scale
544 Film clamper
546 Sharksten switch
548 Reading sensor
556, 558 Plate material (frame)
561 Focus Chart
564 clips
572 identification mark

Claims (3)

An image reading apparatus provided with a line scanner for reading an image recorded on a film,
A frame for holding the film;
A frame support means mounted so that the frame holding the film can take at least two positions of an image reading position and a film exchange position;
The frame support means can be mounted, and the frame support means corresponds from one end to the other end of the image on the film whose reading optical axis for reading the image is orthogonal to the scanning direction of the line scanner. Moving means to move
Have
The moving means is exposed and disposed on a front table of the line scanner ;
An image reading apparatus , wherein a focus chart is provided on a film holding surface of the frame . An image reading apparatus provided with a line scanner for reading an image recorded on a film,
A frame that holds the film and is provided for each type including the size of the film, and is provided with an identification mark indicating the type;
A table mounted so that the frame holding the film can take at least two positions of an image reading position and a film replacement position; and a recognition means for recognizing an identification mark of the mounted frame. A part of the frame support means that has a light transmissivity, and is a schacus ten provided with an index for film alignment on the transmission surface;
The frame support means can be mounted, and the frame support means corresponds from one end to the other end of the image on the film whose reading optical axis for reading the image is orthogonal to the scanning direction of the line scanner. Moving means to move
Have
The moving means is exposed and disposed on a front table of the line scanner ;
The frame support means is provided with a switch for turning on and off the light source of the transmitted light of the Schaukasten by the movement of the frame, and is turned off by the movement from the image reading position to the film exchange position. An image reading apparatus which is turned on by moving to a reading position . An image reading apparatus provided with a line scanner for reading an image recorded on a film,
A frame that holds the film and is provided for each type including the size of the film, and is provided with an identification mark indicating the type;
A table mounted so that the frame holding the film can take at least two positions of an image reading position and a film exchange position; and a recognition means for recognizing an identification mark of the mounted frame. A part of the frame body support means that is made as a schacus ten having a light-transmitting property and provided with an index for film alignment on the transmission surface;
The frame support means can be mounted, and the frame support means corresponds from one end to the other end of the image on the film whose reading optical axis for reading the image is perpendicular to the scanning direction of the line scanner. Moving means to move
Have
The moving means is exposed and disposed on a front table of the line scanner;
An image characterized in that the type of film based on the identification mark is recognized by the recognition means, and at least one of the moving speed of the moving means and the reading magnification at the time of image reading is set according to the recognized film type. Reader.

Images