JPH01267627A - Deciding means for frame number of pieced negatives film - Google Patents

Abstract

PURPOSE:To give correspondence to a frame number and a photographed frame by measuring the moving position of a cut end surface when a pieced negative film is conveyed, positioning the frame in a printing position and extracting frame numbers whose moving positions lie within a prescribed range in that positioning. CONSTITUTION:The moving amount of the pieced negative film 2 is measured to know how much a bar code 3 for a frame number moves from a bar code sensor 6, whereby the moving position of the frame number 5 can be found. Since a distance L from the bar code sensor 6 to the center of a negative mask 7 is set at two frames and a half, five frame numbers can be simultaneously measured. After the frame to be printed is correctly positioned in the printing position, the frame numbers lying within a section l a fixed distance l1 around the center of the negative mask 7 are searched among the five frame numbers, thereby finding the number of the positioned frame 2a. Namely, the frame numbers whose moving distances are within a range of L1-L2 are searched. Thus, the number 5 of the frame set to the negative film 7 can be decided correctly.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for determining the frame number of a piece negative, and more specifically, it is used in a photographic printing device, a negative verification device, and a frame number printing device, and is used for determining the frame number of a piece negative. This relates to a method of automatically determining the number of the frame in which the frame is located.

[Conventional technology]

A disc-shaped disc film is already on the market. In this disc film, a frame number using arithmetic numerals and a binary bar code are recorded next to each frame arranged at a fixed pitch. There is. This disc film printing system uses a sensor to read a binary barcode and prints this frame number on the back of the printed photo.

Also, when making reprints, if you input the number of reprints to be printed on the keyboard, by reading the binary barcode, the reprint number ÷ will be automatically set at the print position, and the number of copies entered on the keyboard will be printed. There is.

In this disc film, since the recording position of the image is specified, the photographed frames and frame numbers accurately correspond. However, with roll film, such as 135 size negative film, the recording position of the frame changes depending on how it is loaded into the camera, so the positional relationship between the frame number of the arithmetic numerals recorded at the time of film manufacture and the photographed frame is different. Failure to do so will result in various inconveniences. For example, when reordering photo printing, the photos printed at the same time,
It is necessary to identify the extra print frame by comparing it with the negative film, and to check the frame number by observing both sides of the identified frame.

Therefore, in order to easily confirm the frame number, there is a known device that records the frame number on the printed photograph during simultaneous printing.
In No. 3, a mark is recorded at the start frame of the negative film, and after detecting this mark, the amount of transfer of the negative film is measured, the number of the frame on the negative mask is determined from this amount of transfer, and this frame number is displayed on the screen. It describes a device that prints in the white frame around it or prints on the back side.

Additionally, there has been proposed a device that reads the frame number with an image identification means when making extra prints, determines the designated extra print frame, sets it on a negative mask, and prints the required number of extra prints (for example, in Japanese Patent Application Laid-Open No. (Sho 52-111718).

The above-described method using marks requires a start mark to be attached before printing, and a method that reads frame numbers has the problem that the reading device becomes complicated. This kind of problem can be solved by side-printing the barcode for the frame number at the time of manufacturing the negative film, maintaining a certain positional relationship with the frame number, and using a sensor placed on the path of the negative film. This can be solved by reading the frame number barcode.

[Problem to be solved by the invention]

However, if the frame number barcode is printed on the side, it will be easier to read, but as mentioned above, the photographed frame and the frame number barcode do not correspond, so it is necessary to make the correspondence. Become. This correspondence is particularly difficult for piece negatives in which a single negative film is divided into a fixed number of frames.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for determining the frame number of a piece negative, which makes it possible to reliably associate a frame number read from a frame number barcode with a photographed frame. .

[Means to solve the problem]

In order to achieve the above object, the present invention starts measuring the transfer amount of the piece negative in synchronization with the reading of the frame number barcode, and uses the frame number barcode or frame number with the position of the barcode sensor as the origin. The distance of each frame from the cut end surface is checked in advance, and when the piece negative is transferred, the movement position of the cut end surface is measured and the frame is positioned at the printing position. Extract frame numbers whose positions are within a certain range,
This is determined to be the frame number of a frame within the negative mask.

The transfer amount of the piece negative can be measured by counting the drive pulses of a pulse motor or the pulses of a rotary encoder connected to a roller that rotates in accordance with the drive pulses of the pulse motor. Alternatively, a counter may be provided to count the number of perforations, and the transfer amount may be measured based on the number of perforations and the number of pulses.

[Effect]

In the present invention, pulse counting is started when reading the frame number barcode, and the movement position of the read frame number barcode or the corresponding frame number is measured.

On the other hand, the frame to be printed is positioned at the print position by controlling the transport of the piece negative. This positioning is performed by detecting the notch formed in the center of each frame or by screen detection, but if neither of these can be detected, the frame is moved according to the position of the cut end surface. Perform positioning. That is, since the distance of each piece from the cut end surface is known in advance, positioning can be performed by measuring the moving distance of the cut end surface.

After positioning the frame to be printed, the distance between the barcode sensor and the center of the negative mask is used as a reference, and frame numbers that have moved within a set range before and after that are extracted.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

(Example) FIG. 1 shows the relationship between a piece negative and a sensor. Piece negative 2 is inserted into the negative case by 1
A book negative film is divided into a predetermined number of frames, for example, every six frames. This piece negative 2 has a frame number barcode 3 printed on one side and a well-known DX code 4 on the other side, and a frame number 5 is also printed on both sides of the piece negative 2. Barcode for these frame numbers 3. DX code 4. Frame number 5 is recorded as a latent image during the production of negative film, and is visualized by photographic development.

A barcode sensor 6 is arranged at a certain distance from the center of the negative mask 7, and when the piece negative 2 is transferred in the arrow direction, the frame number barcode 3 is read. An appropriate barcode sensor 6 is used depending on the type of frame number barcode 3 to be used. For example, 1 placed in the transport direction of piece negative 2
A line sensor in which a plurality of light receiving elements or a plurality of light receiving elements are arranged in a line is used. In the case of this line sensor, each light-receiving element is placed offset by the minimum width of the bar, the difference signals between adjacent light-receiving elements are determined, and each of the obtained difference signals is input to a window comparator to determine the edge of the bar. Detect. In addition, when the number of light receiving elements is one, it is also possible to determine whether the width of the bar is wide or narrow by referring to the feeding amount of the piece negative 2.

Furthermore, as will be described later, the start mark of the frame number barcode 3 is a DX code 4 indicating the type of negative film.
Since it is side printed to match the start mark of DX code 4, it is also possible to import data using the clock track of DX code 4. Furthermore,
The frame number barcode 3 may be read while the piece negative 2 is being transported, or may be read while the piece negative 2 is stopped. In addition, if a DX sensor for reading DX code 4 is placed on the film path, two sensors with light receiving elements arranged in 2 rows and 2 columns are installed to enable common use with this sensor. This may be used on one side of the negative mask 7 and on the passage on both sides of the piece negative 2, or four sensors may be placed on both sides of the negative mask 7.

The negative mask 7 is placed at a print position, and a plurality of frames 2 recorded on the piece negative 2 are placed at this print position.
A to 2e are sequentially positioned.

In order to position this frame, an image sensor 8, a notch sensor 9. An edge sensor 10 is provided, and positioning is performed using a signal from any one of these sensors.

The image sensor 8 is arranged so as to look at the print position, and detects the edges 11a and llb of the frame (screen).
It is detected whether or not the negative mask 7 is at a predetermined position. In this embodiment, the image area sensor 8 is used not only as a screen detection sensor but also as a scanner that measures light at each point of a frame for exposure control. The notch sensor IO is disposed on the path at the side edge of the piece negative 2, and detects a notch (not shown) formed in the notched piece negative to position the frame. In this notched piece negative, a notch is formed on the center line of the frame to be printed, as is well known. Since the distances of the frames 2a to 2e of the piece negative 2 from the cut end surface 2f are determined, it is possible to detect the cut end surface 2 of the piece negative 2 with the edge sensor 10 and measure the amount of movement of the cut end surface 2f. Positioning can be performed.

A line sensor is used as the screen detection sensor, and this is arranged on the path of the piece negative 2 so as to be orthogonal to the transport direction of the piece negative 2, and the transport amount of the piece negative 2 is measured from the time when this line sensor detects the frame edge lla. Then, when the frame edge lla has been transferred by the distance between the position where it is to be positioned on the negative mask 7 and the line sensor, the feeding of the piece negative 2 is stopped, thereby transferring the frame containing this frame edge lla onto the negative mask 7.
It may be positioned above.

FIG. 2 shows an example of a frame number barcode. Various types of barcodes have been proposed so far, and any of them can be used in the present invention. For example, as a binary level, Interleav
ed 2 of 5. Industrial 2
There are 5 of 5, Code 3 of 9, and multi-level ones such as UPC.

In this example, rC as data bit 3a.

de 3 of 9 J is used. This data bit 3a is composed of five barcodes, and a start mark 3b and an end mark 3C are attached to both sides of the barcode so that the most significant bit and the least significant bit can be identified. In "rCode 3 of 9", white backgrounds and bars are arranged alternately, and the wide one represents the binary digit "1" and the narrow one represents the binary digit "0". Note that this "rCode 3 of 9" is not a binary representation, so it is not possible to distinguish between even and odd numbers in the decimal system from the lowest focus.

In the example of the frame number barcode shown in the figure, data bit 3
If a is expressed as a binary digit, it becomes "rooloolol", and this binary code corresponds to "24" in the decimal system.

The frame number barcode (expressed in decimal notation for convenience) and the frame number correspond, for example, as follows.

Topsoil frame number barcode (decimal system) Frame number 73
36A Also, the length A of the frame number barcode 3 and the length B from the center of frame number 5 to the start mark 3b are constant. Therefore, the distance C from the frame number 5 to the end mark 3c is also constant. Further, as shown in FIG. 1, the pitch of the frame number barcode 3 and the pitch of the frame number 5 are also constant.

In FIG. 1 mentioned above, when the barcode sensor 6 reads the frame number barcode 3, it writes it into the memory and simultaneously writes the piece negative 2 in synchronization with this reading.
Start measuring the transfer amount.

By measuring the amount of movement of the piece negative 2, it is possible to know how far the frame number barcode 3 has moved from the position of the barcode sensor 6.

Here, the transfer amount of the piece negative 2 is the start mark 3b
Or, the end mark 3c is used as a reference, but in the case of the start mark 3b, the length B is added, and in the case of the end mark 3c, the length C is added to set the frame number 5.
You can know the moving position of. In this embodiment, the distance between the barcode sensor 6 and the center of the negative mask is set to about two and a half frames, so the moving positions of five frame numbers are measured at the same time.

After correctly positioning the frame to be printed at the printing position, a section with a certain distance all before and after the center of the negative mask 7 among the five frame numbers! By checking what exists inside, the frame number of the positioned frame 2a can be known.

This can be done by checking the frame numbers whose movement distance is within the range of Ll-L2. - The section 2 needs to be set to be slightly longer than the pitch of frame number 5 and less than the length of the screen. If two frame numbers are extracted, the one with the smaller frame number or the one without "A" is selected. Alternatively, the one whose movement amount is closer to the distance #L to the center of the negative mask may be selected. In addition, the section! If you set the screen length to
It is necessary to change the length of section 2 between full size and half size. Furthermore, when measuring the moving position of the frame number barcode 3, the frame number of the barcode on the right side of the center of the negative mask will be closer to the center of the negative mask, and the one on the left side will be farther from the center of the negative mask. Therefore, for example, when measuring the position of the end mark 3c,
The range to the right of the center of the negative mask needs to be widened by length C.

FIG. 3 shows a photographic printing apparatus embodying the present invention. The white light emitted from the light source 12 is passed through a cyan filter 13 . Magenta filter 14. After passing through the yellow filter 15, it enters the diffusion box 16. These color filters 13
15, the amount of insertion into the optical path 18 is adjusted by the filter adjustment section 17, thereby adjusting the quality and quantity of the printing light. The diffusion box 16 is a rectangular cylinder whose inner surface is a mirror surface, with diffusion plates attached to both ends thereof, and sufficiently diffuses the printing light that has partially passed through the color filters 13 to 15.

A negative carrier 20 is placed at a printing position, a piece negative 2 is set thereon, and the negative carrier 20 is illuminated with light transmitted through a diffusion box 16. This piece negative 2 is fed frame by frame in the arrow direction by a pair of feed rollers 21 and 22 arranged on both sides of the printing position.

The pair of feed rollers 21 and 22 are interlocked by a belt or the like, and are rotated forward or reverse by a pulse motor 23.

In order to ensure the flatness of the piece negative 2, a negative mask 7 is provided above the printing position. As is well known, this negative mask 7 has an opening larger than the size of the frame 2a, and is lifted up by a solenoid (not shown) when the piece negative 2 is transferred, and presses down the piece negative 2 during printing.

A barcode sensor 6 is arranged next to the feed roller pair 22, and an image area sensor 8 is arranged diagonally above the printing position. In addition, the notch sensor 9
and edge sensor 10 are omitted. Further, a printing lens 26 is arranged above the printing position,
The negative image of the frame set in the print position is printed on photographic paper 27.
Magnify and form an image. This printing lens 26 and photographic paper 2
A shutter 29 whose opening and closing are controlled by a shutter drive unit 28 and a photographic paper mask 30 are arranged between the shutter 7 and the shutter 7 . The photographic paper 27 is pulled out one frame at a time from the photographic paper roll 31, passes through a guide roller 32, and then is set at an exposure position. Then, the exposed portion is transferred to the development processing device 3 by a pair of pull-out rollers 34 driven by a pulse motor 33.
Sent to 6. The exposed photographic paper that has been photographically processed here is cut frame by frame by a canter 37 and discharged to a tray on the third day.

A printing device 4o is arranged next to the exposure position,
Driven by a signal from the controller 41, the piece negative 2
The same number as frame number 5 is printed on the back side of the exposed photographic paper 27, for example, in a dot pattern. Instead of this printing device 40, a character imprinting device composed of a liquid crystal panel or a light emitting diode array or the like can be attached to the photographic paper mask 30, and at the same time as printing the negative image, for example, a frame number of a dot pattern can be imprinted within the white frame. good.

The rotation direction and rotation amount of the pulse motors 23 and 33 are controlled by a controller 41 via drivers 42 and 43. Further, this controller 41 is composed of a microcomputer, and includes a filter adjustment section 17. In addition to controlling the shutter drive unit 28 and the like, it also controls the transfer of the piece negative 2, calculates the exposure amount, and the like. The keyboard 45 includes color keys 46 . for inputting color correction data. Density key 47 for inputting density correction data. Alphanumeric keys 48 for inputting print data etc. Print start key 49 for starting printing. A bus key 50 is provided for skipping the frames.

FIG. 4 shows a part of the controller that reads and prints frame numbers.

The signal output from the barcode sensor 6 is sent to the backup memory 51, where it is stored in -time.

The data stored in this buffer memory 51 is converted into binary numerical data by a decoder 52, and then stored in the memory 51.
Sent to 3. The memory 53 includes a plurality of, for example, five frame number storage sections 54a to 54e and corresponding drive pulse number storage sections 55a to 55e. Before writing new numerical data to the storage section 54a, the frame number storage sections 54a to 54e sequentially shift the already written numerical data upward one line at a time. Further, the drive pulse number storage units 55a to 55e are for storing the number of drive pulses corresponding to the moving distance of frame number 5, and each time the drive pulse is shifted by one by the driver 42, "1" is added. Updated with numbers. Therefore, this drive pulse number storage section 55
a to 55e substantially constitute a frame number counter. In this embodiment, when the barcode sensor 6 detects the end mark 3c, the number of driving pulses corresponding to the length r (, 1) shown in FIG. This is set as a preset value, and rl is sequentially added to this value.Also, this drive pulse number storage section 55a
55e is at the same time as the frame number storage section 54a is shifted.
Move up one line at a time.

Note that since the frame number barcode 3 is recorded with a certain pinch and the positional relationship with the frame number 5 is also constant, the memory 53 is stored for one line, for example, in the frame number storage section 54a.
It is also possible to provide only the drive pulse number storage section 55a. In this case, the latest numerical data and the number of driving pulses representing the position of this data are memorized, and the number of driving pulses corresponding to the pitch of the frame number barcode 3 is added to this.
On the other hand, by adding "l" to the numerical data, the position of each frame number on the negative mask 7 side can be checked.

The determination unit 56 determines whether the drive pulse stored in the memory 53 is within a certain range when the frame of the piece negative 2 is set at the print position, reads out numerical data corresponding to this, and stores it in the memory 57. Write. The numerical data written in this memory 57 is decoded by a decoder 58, converted to frame number 5, and then sent to the printer 40.

The printing device 40 is driven when the exposed portion is set on the printing device 40 after feeding of the photographic paper 27, and prints frame number 5 on the back side of the photographic paper 27.

The image area sensor 8 includes a large number of pixels arranged in a matrix as is well known, and converts light incident on each pixel into an electrical signal and stores the electrical signal. The signal charges accumulated in these pixels are read out at a predetermined period and output as a time-series signal. This time series signal is
In the A/D converter 60, the image area sensor 8
It is converted into a digital signal at a timing synchronized with the reading of the data. This digital signal is converted into a concentration signal (a value proportional to the concentration value in g&density) by a logarithmic converter 61, and then sent to a comparator 62.

The unexposed portions have a base density, and the exposed frame portions have a high density. Therefore, frames can be detected by checking the density value measured by the image area sensor 8. For this purpose, a comparator 62 thresholds a density value slightly higher than the base density.
is provided to binarize the density signal at each point of the frame output from the logarithmic converter 61. This binary data is written into the frame memory 63. Writing to this frame memory 63 is performed periodically in synchronization with reading from the image area sensor 8. Also, the area surrounded by hatching represents the frame.

The determination unit 64 reads out one line of binary data from the frame memory 63 and selects the frame edge 11a.

11b, and these edges 11a,
The center of llb, that is, the center position of the frame is calculated. Note that it is preferable to determine the center position for a plurality of lines (for example, three lines at the center and above and below).

Then, when the center position of the frame coincides with the center position PL of the frame memory 63, the transfer of the piece negative 2 is stopped.

In large-scale photo labs, when inspecting negatives, a notch is drilled on the center line of the frame and at the side edge of the frame to be printed. For this notched piece negative,
Notch sensor 9 detects a notch and sends a signal to counter 6
Send to 7. This counter 67 counts drive pulses when the notch detection signal is input, and when the next notch detection signal is input, shifts the count value already being counted and starts a new count at the same time. Therefore, the counter 67 can simultaneously measure the amount of movement of two notches. The determination unit 68 determines whether the contents of the counter 67 have reached a count value corresponding to the distance L3 between the center of the negative mask and the notch sensor 9.

If the content of the counter 67 corresponds to the distance L3, it means that the frame to be printed is correctly set at the print position, and at this point a frame set signal is output.

For piece negatives without notches, frame positioning can be performed by screen detection, but positioning cannot be performed for frames where edges do not exist. To cope with such a case, a counter 69 is provided which is reset by a signal from the edge sensor 10 and counts drive pulses after this reset.

That is, in the piece negative 2, since the distance from the cut end surface 2f to each frame 2a to 2e is fixed, the cut end surface 2
The position of the frame can be determined by measuring the moving position of f.0 For example, if the interval between the frames is 2 mm, the distance from the cut end surface 2f to the center of the frame 2a is 21 m +
+ (19+2), so the contents of the counter 69 are (
If film feeding is stopped when the value corresponding to L4+21)ma+ is reached, frame 2a can be positioned at the printing position. Therefore, the second piece 2b has the cut end surface 2
Since the distance from f is 59 ma + (2 + 36 + 2 + 19), film advance can be stopped when the contents of the counter 69 reach the value corresponding to (t, 4 + 59) m.

The memory 70 stores the distance (L) of each frame from the cut end surface 2f.
4+21), (L4+59), etc. are stored. The determining section 71 checks the contents of the counter 69 while referring to the data in the memory 70, and outputs a frame set signal. In addition, the width of the full size frame is 36m, but the width of the half size frame is 1.
Since it is 9m5+, it is necessary to use different values for full size and half size. In this case,
Two types of data, one for full size and one for half size, may be written in the memory 70, and the data may be selected according to the designation of the film size.

The priority section 72 extracts the frame cent signals from the determination sections 64, 68, and 71 based on a prespecified priority order. For example, the priority is notch detection.

If the order is screen detection and cut edge detection,
If both of these are performed, priority is given to notch detection, and a motor stop signal is sent to the motor control circuit 73 when the frame set signal is output from the determination section 68.

Further, in the case of a piece negative without a notch, screen detection and cut end face detection are performed, but in this case, screen detection is given priority for frame positioning. If the screen cannot be detected, the frame set signal from the determination unit 71 causes the motor 2 to
Perform the stop in step 3.

The motor control circuit 73 generates a signal indicating the rotation direction when the print end signal is input manually, and sends the signal to the driver 4.
Send to 2. At the same time, a drive pulse with a constant period is generated to drive the driver 42. Drive pulse counters 55a-5
5e, the counter 67° is sent to the counter 69. Then, the rotation of the pulse motors 2 to 2 is stopped by a motor stop signal from the priority section 72. In addition, in order to eliminate sudden stops of the pulse motor 23, the movement position of the frame is checked and the determination unit 6
It is preferable to output a deceleration signal from 4.68.71 and lengthen the period of the drive pulse in accordance with this deceleration signal.

The image area sensor 8 is used not only for frame positioning but also for photometry for exposure control. In this case, the density signal is sent to the characteristic value extraction section 75, where the maximum density value, minimum density value, density value of a specific area, etc. are extracted for each color.
These characteristic values are sent to the exposure amount calculation section 76. This exposure amount calculation section 76 is configured to use an LATD sensor (
The exposure amount is calculated for each color using the LATD value measured by the method (not shown) and each characteristic value described above.

Next, the operation of the above embodiment will be explained with reference to FIG. When the bus key 50 is operated after setting the piece negative 2 on the negative carrier 17, the pulse motor 23 rotates normally and transports the piece negative 2 in the direction of the arrow in FIG. During this transfer, the barcode sensor 6 reads the frame number barcode 3 printed on the side of the piece negative 2, and writes the obtained signal into the buffer memory 5.

The data temporarily stored in the buffer memory 51 is converted into numerical data by the decoder 52, and then written into the frame number storage section 54a. In synchronization with this reading, the drive pulse number storage section 55a starts counting drive pulses.

When the barcode sensor 6 reads the barcode 3 for the next frame number, the numerical data stored in the frame number storage section 54a is shifted to the frame number storage section 54b above it, and at the same time, the driving pulse number storage section 55a The number of driving pulses stored in is also shifted to the number of driving pulses storage section 55b. After this shift, new numerical data is written into the frame number storage section 54a. Then, each time the pulse motor 23 rotates step by step, the drive pulse number storage section 55a.

55b counts up by "1". Similarly below,
Every time the frame number barcode 3 is read, data is shifted, new data is written, and driving pulse counting is started.

When the piece negative 2 is transferred, the edge sensor 10 detects the cut end surface 2f. The counter 69 starts counting the drive hals in response to the detection signal from the edge sensor 10, and measures the amount of movement of the cut end surface 2f. Since the piece negative 2 shown in FIG. 1 is not notched, the notch sensor 9 does not output a notch detection signal, and therefore the counter 67 does not perform a counting operation. In this case,
The determining section 68 sends a signal indicating that there is no notch to the priority section 72.

The image area sensor 8 periodically measures the light of the piece negative 2 through the negative mask 7 and generates a time-series signal. , this time series signal is digitally converted and logarithmically converted, then binarized by a comparator 62, and the obtained binary data is written into a frame memory 63. This frame memory 63 is written in synchronization with reading from the image area sensor 8, so it stores the latest binary data.

When the determining unit 64 detects both frame edges lla and llb, it sends a frame detection signal to the priority unit 72 to instruct that positioning by screen detection is possible. Next, the determining section 64 checks the center positions of the frame edges 11a and 11b, and when they reach the position PL, sends a frame center signal to the priority section 72.

On the other hand, the determination unit 71 generates a frame set signal based on the movement position of the cut end surface 2f measured by the counter 69.

However, since the priority of screen detection is higher than that of cut edge detection, when the priority section 72 receives the frame detection signal from the determination section 64, the priority is determined. After this, when the frame set signal is output from the determination section 64, a motor stop signal is sent to the motor control circuit 73. The motor control circuit 73 stops the rotation of the pulse motor 23 when the motor stop signal is input, and stops the frame 2 detected on the screen.
Correctly position a at the printing position.

After positioning the frame, a test is performed to determine whether the frame should be printed and whether the finish is appropriate.

If it is recognized that the frame is out of focus, by operating the bus key 50, piece negative feeding is restarted as described above, and the next frame 2b is positioned. Also,
For frames with inappropriate finish, use color key 4.
6 and density key 47 to input the correction amount.

When the print start key 49 is operated after negative verification, the density data for one frame read by the image area sensor 8 is immediately taken into the characteristic value extraction section 67.
Various characteristic values are extracted from this. Exposure calculation unit 68
calculates the exposure amount for each color from various characteristic values and LATD values. Color filters 13~
15 into the optical path 18 is adjusted. After this filter adjustment, the shutter 29 is opened and the photographic paper 27 is exposed.

When the printing of the frame 2a is completed, the determining section 56 determines the numerical data that the driving pulse is within a certain range, and writes this into the memory 57. In this case, if there are two numerical data for 35mm full size, select the one without "A", and for 35mm half size, both will be stored in memory 57.
write to.

Along with this, the controller 4 operates the pulse motor 23
is rotated to transport the photographic paper 27 by one frame, set the unexposed part to the exposure position, and transport the exposed part towards the development processing section 36. After this photographic paper is fed, numerical data is read from the memory 57 and sent to the decoder 58. The decoder 58 converts the binary numerical data into frame number data with reference to Table 1, and sends this to the printer 40. The printer 40 drives a print head in accordance with the input frame number data to print a frame number on the back of the photographic paper 27 on which the photo was first printed.

After printing the frame number, the controller 41 retracts each color filter 13 to 15 to the standard position via the filter adjustment section 17. Further, the motor control circuit 65 rotates the pulse motor 23 again, aligns the next frame 2b with the center of the negative mask as described above, and prints.

For frames and the like that are shadowed by a strobe, the edges become unclear, so the determination unit 64 does not output a frame detection signal. In this case, since the priority section 71 gives priority to cut edge detection over screen detection, the rotation of the pulse motor 23 is stopped when the frame set signal is output from the determination section 71. That is, since each of the frames 2a to 2d is located at a predetermined distance from the cut end surface 2f, the positions of the frames are determined by referring to the memory 70 that stores the distance data of each frame.

Then, when the distance of the next frame to be positioned matches the distance measured by the counter, the determination unit 71 outputs a frame set signal. When this frame set signal is output, the pulse motor 23 stops rotating.

Further, in the case of a piece negative with a notch, the notch made on the frame is detected by a notch sensor 9. When this notch detection signal is manually input to the counter 67, the counter 67 starts counting drive pulses.

When the next notch is detected, the count value is shifted to the next notch, and then the two counting sections start counting, thereby measuring the amount of movement of the two notches. When the counter 67 starts counting, the determination unit 6
8 sends a signal to the priority section 72 indicating that positioning by the notch is possible.

When the distance measured by the counter 67 becomes equal to the distance L3 between the center of the negative mask and the notch sensor 9, a frame set signal is output from the determining section 68. The priority section 72 sends a motor stop signal to the motor control circuit 73 to stop the rotation of the pulse motor 23 when receiving the commacent signal from the determination section 68 .

In addition to printing frame numbers, the present invention can also be used to automatically set frames in print positions during reprints or reprints. Also,
The present invention can be used not only for photo printing apparatuses but also for negative inspection apparatuses. In this negative verification device, negative verification is performed after frame positioning, and empirically determined exposure correction data and automatically extracted frame number data are stored on a tape or magnetic floppy. Then, at the time of printing, the storage medium and the piece negative are set in a photo printing device, and photo printing and frame number printing are performed.

[Effects of the Invention] As explained in detail above, the present invention reads the frame number barcode with a barcode sensor, measures the transfer amount of the piece negative in synchronization with this reading, and reads the frame number barcode or Check the moving position of the frame number, measure the moving position of the cut end surface of the other piece negative, and position the frame so that it is set at the center of the negative mask.
After this positioning, frame numbers whose transfer amount of the piece negative is within a certain range are extracted, so that the frame number of the frame set in the negative frame can be accurately determined.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the present invention showing the relationship between a negative mask, a sensor, and a piece negative. FIG. 2 is an explanatory diagram showing an example of a frame number barcode. FIG. 3 is a schematic diagram of a photographic printing apparatus embodying the present invention. FIG. 4 is a functional block diagram of the controller. FIG. 5 is a flowchart showing the operation of the photographic printing apparatus. 2... Piece negative 2a to 2e... Frame 2f... Cut end surface 3... Barcode for frame number 5... Frame number 6... Barcode sensor 7... Negative mask 8... Image area sensor 9... Notch sensor 10... Edge sensor 11a, 11b... Frame edge 23... Pulse motor 40... Printer 53... Memory 63 for storing numerical data and drive pulse number... Frame memory 67, 69... counter.

Claims (2)

[Claims] (1) A method in which a barcode sensor is placed at a certain distance from the negative mask, and the barcode sensor reads the frame number barcode recorded on it when the piece negative is transferred to determine the frame number in the negative mask, In synchronization with the reading of the frame number barcode, measurement of the transfer amount of the piece negative is started, and the moving position of the frame number barcode or frame number is measured with the barcode sensor position as the origin, and the movement position of the frame number is measured from the cut end surface. Check the distance of each frame in advance, measure the moving position of the cut edge of the piece negative, position the frame at the printing position, extract the frame number whose moving position is within a certain range at this positioning, and A method for determining a frame number of a piece negative, characterized by determining that the frame number is a frame number of a frame within a negative mask. (2) The piece negative is transferred by a pulse motor,
2. The piece negative frame number determination method according to claim 1, wherein the amount of conveyance of the piece negative is measured by counting drive pulses of the pulse motor.