JP2515771Y2 - Negative film detecting device in auto negative mask of automatic photoprinting machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention detects the inserted negative film in the printing process of the auto negative mask of the automatic photoprinting machine and automatically starts transporting the film. The present invention relates to an improvement in a negative film detection device for detecting the front and back sides of a negative film and preventing the waste of time for transporting the negative film and the occurrence of misprinting.

(Prior Art) Conventionally, the latent image bar code (DX code) attached to one side edge of the negative film is usually from the left in frame order in which the operator shoots the negative film in the auto negative mask of the printing machine. When sending to the right for printing, the DX code detection sensor located on the left side (upper side) in the direction of movement of the negative film detects the DX code of the negative film near the negative film insertion opening of the auto negative mask. Negative film to be sent at the same time as obtaining the information such as film maker and sensitivity by detecting the DX code of the inserted negative film provided on the left side (upper side) in the position corresponding to By detecting the presence or absence of the DX code of the negative film, the front and back of the negative film was discriminated.

Therefore, when insertion set in the negative film in the face down of photographing frame order status (see the negative film B ₂ of FIG. 1), since DX code is not without completely detected, the first image frame exposure printing position of When the negative film that had been inserted and set was faced down, it was informed by a display on the operation unit display, an alarm buzzer, etc.

Also, after inserting the leading edge of the negative film into the negative film insertion opening of the auto negative mask, or before that, the operator presses the transport roller drive button on the operation panel one by one, and the operator presses the transport negative roller auto negative mask transport device. And started the printing work.

Further, it has been considered that the leading end of the fed film sheet actuates the microswitch to drive the transport device.

(Problems to be solved by the invention) In such a conventional detection device, although there is a starting mechanism that is interlocked with the feeding of the film sheet, it is possible to perform a physical start in which the switch is turned on by the insertion force accompanied by the pressing friction of the negative film. Therefore, not only a strong insertion force is required, but there is a risk of damaging the negative film, and a simple and safe operation cannot be obtained.Each time, a long negative film tip that is otherwise difficult to handle is sent from the insertion opening, The operation work is complicated and the printing efficiency is poor, such as the mechanism for starting the transport device by operating the operation buttons on the operation panel one by one.

Furthermore, although a method for discriminating between the front and back of the DX code has been proposed, the negative film does not have the function of automatically controlling the transport of the negative film and not performing the printing in the case of facing down based on this. when insertion set in a state in which the captured frames in order to face down was reversed (see negative film B ₁ of FIG. 1), despite the negative film is face down, to the left (upper side) of Okugyo If a certain DX code is detected and the first frame is sent to the print (exposure) position and then stopped, the operator presses the print start button without noticing the reverse side of the negative film. Are sequentially frame-advanced and the print processing is completed. Therefore, a large amount of misprint (back print) occurs.

Further, as described above, when the negative film is sent from left to right in the auto negative mask of the printing machine for printing work, the negative film is sent in the order of frames taken (see negative film A _{1 in} FIG. ₁ ). Since it is sent to the exposure unit in an inverted state, it is difficult for the operator to check the image. Therefore, it is necessary to insert the image into the erect image facing up and perform the printing work. Therefore, when the negative film is inserted and set in the auto negative mask in the reverse order of shooting frames (see the negative film A _{2 in} FIG. 1), it is facing up. Nevertheless, there are inconveniences such as being unable to print because it is detected that there is no DX code, and finally, every time the operator inserts the negative film into the auto negative mask and sets it, the front and back sides must be visually confirmed. There was a problem.

This device pays attention to these problems and simplifies the printing operation with the auto negative mask of the printing machine,
It is an object of the present invention to accurately detect the front and back of a negative film to control the conveyance to the printing section and improve the printing efficiency.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an apparatus for detecting a negative film in an auto negative mask of an automatic photoprinting machine, in which a conveying path near the negative film insertion opening of the auto negative mask is used. A leading edge detection sensor is provided to detect the leading edge of the negative film and is connected to start the conveying device, and at the same time, the latent image bar code on one side edge of the negative film is detected at one side of the conveying path. A sensor is provided to detect the arrangement of latent image barcodes with this detection sensor to control the transport of the negative film.The leading edge detection sensor near the negative film insertion opening detects the leading edge of the negative film inserted. The transport device is automatically started, and the detection sensor provided on the side reads the row of the latent image barcode on the negative film and the CPU determines the front and back of the DX code. Suggest negative film detecting apparatus in the automatic negative mask pictures automatic baking machine and controlling the feeding of the negative film Te.

(Operation) The leading edge detection sensor detects the leading edge of the inserted negative film and starts driving the driving source of the feeding device to automatically start feeding driving of the negative film to the exposure frame.

The latent image bar code detection sensor reads the arrangement and presence of latent image bar codes on the side edge of the inserted negative film and controls the conveyance to the exposure frame. The latent image bar code on the side edge of the negative film. Is read in a predetermined arrangement, it is read to confirm that the negative film is facing up (normal image), and the film is sent to the exposure frame in a proper manner for printing. If the latent image barcode on the side edge of the negative film is in the opposite order to the predetermined arrangement, or if there is no latent image barcode, it is impossible for the negative image barcode sensor to read it. Control the negative film feed by confirming that the image is inserted in the inverted image state although it is face down (reverse image) or face up.

In a detection device provided with latent image barcode detection sensors on opposite sides, one latent image barcode detection sensor reads a predetermined sequence of latent image barcodes on a negative film and the other latent image barcode detection sensor. The code detection sensor reads a predetermined reverse sequence of the latent image bar code, confirms that the inserted negative film is face-up (normal image or inverted image), and controls the transfer to the exposure frame for printing. On the other hand, since both latent image barcode detection sensors cannot read the latent image barcodes that are different from the predetermined or reverse arrangements, the inserted negative film must be face down (reverse image). Error response to confirm,
Control the negative film feed.

(Embodiment) Next, an embodiment of the negative film detection device according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an auto negative mask of an automatic photographic printing machine for carrying out the present invention, FIG. 2 is a plan view showing a cutaway portion of the same, and FIG. 3 is a perspective view of essential parts of the same. Fourth
Figures and 5 are plan views showing the latent image bar code (DX code) part of the negative film. In the figure, (1) shows an auto negative mask, which is composed of a main body (1a) and a cover body (1b). An exposure frame (4) that is cut out vertically is provided in a conveying path (3) following an insertion opening (2) for inserting the negative film (12), and conveying rollers (5) (5) are provided on the conveying path (3). Is provided to transmit the power of the drive section (16).

The drive section (16) is provided adjacent to the transport path (3), and the drive pulley (1) is fixed to the shaft (17a) of the motor (17).
8) The timing belt (20) is stretched between the transmission pulleys (5a) and (5a) of the transfer rollers (5) and (5) that are arranged in parallel with this, and the tension pulley (1
9) It is formed by engaging (19), and (15) shows a free roller equipped at the exit on the conveying path (3).

(6) is a DX code detection sensor as a latent image bar code detection sensor. As usual, one side of the transport path (3) near the insertion port (2) (the negative film (12) is fed from left to right). (When printing, left side in the transport direction)
If the DX code detection sensor (6) is provided only on the lower side, and the light from the sensor light source (9) provided on the lower side is reflected by the reflection mirror (10) to receive the light, the DX code detection sensor (6) When the start mark (13a) of the DX code (13) head of the negative film (12) is input and memorized with, and the negative film (12) is inserted face down (see B ₁ and B _{2 in} Fig. ₁ ) , The DX code (13) with the end mark (13b) not stored in the DX code detection sensor (6) by the CPU (not shown) of the processor body, or the DX code (13) of the negative film (12) The side edge that is not marked appears and cannot be detected by the DX code detection sensor (6).
When the leading image area (frame) (14) of the negative film (12) sent in (5) reaches the exposure frame (4), the conveyance is stopped and it is confirmed that the negative film (12) is facing down. display,
Notify by warning.

Further, DX code detection sensors (6) and (6a) are provided on the left and right sides of the transport path (3) near the insertion opening (2) facing each other in the transport direction, and the sensor light sources (9) are provided on the lower side. When equipped to reflect the light from the left and right mirrors (10) (10a) and receive it, the DX code (13) on the side edge along the length direction of the negative film (12) inserted and conveyed.
To detect the front and back of the negative film (12), the left sensor (6) inputs and stores the start mark (13a) of the DX code (13) head of the negative film (12),
In the sensor (6a) on the right side, the end mark (13b) of the DX code (13) head of the negative film (12) is input and stored, and the negative film (12) is in a face-up state (Fig. ₁ , A ₁ , A ₂
(See), the CPU (not shown) of the processor main body detects the DX code (13) starting with the start mark (13a) by the left sensor (6) or the right sensor as stored in the CPU. By detecting the DX code (13) having the end mark (13b) at the head by (6a), the frame feed drive of the transport rollers (5) and (5) is continued to expose the negative film (12) to the exposure frame (4). ) And the negative film (12) face down (first
Left sensor (6) when inserted as shown in Figures B ₁ and B ₂ )
A back-facing DX code (13) that starts with an end mark (13b) that is not stored in or a DX code (13) that starts with a back-facing start mark (13a) that is not stored in the right sensor (6a) Each sensor (6) (6
Since it cannot be detected by a) and cannot be detected, the leading image area (frame) (14) of the negative film (12) sent by the transport rollers (5) (5) as an abnormal DX code is the exposure frame (4). When the film reaches, the conveyance is stopped and the negative film is displayed with a warning or other indication that it is facing down.

(7) is a screen detection sensor, which is installed on the transport path (3) so that the light from the sensor light source (9) is reflected by the mirror (11) to receive the light, and the negative film (12) transported is The state of each image area (frame) (14), such as missing or covering, is detected and stored, and the edge (14a) of each image area (14) is detected and the feed length to the exposure frame (4) position is detected. CPU determines the calculation and sends it.

(8) is a leading edge detection sensor, which is provided on the conveyance path (3) near the negative film insertion opening (2) and is a CPU (not shown).
Connected to the motor (17) of the drive unit (16) via the sensor light source (9) provided below the sensor (8)
The leading edge of the negative film (12) inserted by the light from is transmitted is detected, and the driving unit (16) is automatically started to drive the transport roller (5) to expose the negative film (12) to the exposure frame (4).
It is effective in terms of cost reduction and simplification of the mechanism by carrying out the conveyance to the front end and by omitting the front end detection sensor (8) also as the DX code detection sensor (6).

Explaining the printing process in the automatic photoprinting machine equipped with the negative film detecting device for carrying out the present invention with reference to the flowchart of FIG. 6, the tip of the negative film (12) inserted from the insertion opening (2) is detected. The drive motor (17) is started by the signal detected by the sensor (8), the transport roller (5) is rotated to feed the negative film (12), and at the same time, the DX code detection sensor (6) (6a) starts the mark. The end mark, film maker, and sensitivity are read, and the screen detection sensor (7) detects the state of each image area (frame) (14) of the negative film (12) (blank, fog, etc.) and stores each. At the same time, the edge (14a) of the image area (14) is detected, the feed length to the position of the exposure frame (4) is calculated and determined by the CPU, and the image is conveyed.

Negative film (12) is a DX code detection sensor (6)
The front and back are judged from the data read in (6a), and if it is facing down, it will not be burned and a lamp or alarm will notify the abnormality. For the negative film (12) that has been conveyed as normal without any back-side abnormalities, the detected storage data of each frame (14) above is used to calculate each printing condition to determine whether or not printing is necessary, and no printing is required. If there is any, the image area (frame) (14) which is conveyed without being exposed and needs to be burned is sequentially fed frame by frame in the exposure frame (4) under appropriate conditions.

(Effect of the Invention) Since the negative film detection device in the auto negative mask according to the present invention is configured as described above, the tip of the negative film is detected by the detection sensor only by inserting the negative film, and the auto negative mask is conveyed. Since the part starts and automatically conveys the negative film to the exposure frame, unlike the starting mechanism in which the start switch is physically turned on with the negative film, friction resistance is not added to the negative film and the negative film is Not hurt. Therefore, the negative film can be smoothly inserted, which is safe, and the transport operation can be started by only inserting the film lightly, and the initial operation in the printing operation can be made very simple and quick.

Moreover, the latent image bar code detection sensor near the insertion opening of the negative film conveyance path detects the predetermined (as stored) arrangement of the DX code of the negative film, so that the operator mistakenly reverses the negative film. When inserted in the direction, the side code that does not have the DX code different from the specified input and stored sequence or the DX code of the negative film sends the detection sensor (side) to the input and stored specified side. When the arrangement of is not detected, the reverse insertion of the negative film is automatically checked, the abnormality is notified, the conveyance is controlled, and the printing operation is stopped.

Therefore, the operator can omit the troublesome work of strictly checking the front and back of the negative film one by one, and at the same time, the risk of unnecessary back-baking can be eliminated, and the simplification and efficiency of the baking work can be significantly improved, and the baking can be significantly improved. The rise in costs can be suppressed.

Further, in the detection device in which the latent image bar code detection sensors are installed on both sides opposite to each other, the DX code of a predetermined line (as input and stored) is set by one of the sensors and the DX code of another line is set by the other sensor. Each of the reversely aligned DX codes (as stored in the input memory) is read and detected, and the negative film inserted face up is detected in both the upright and inverted images so that both images can be printed. The efficiency of the work is further improved, and since the negative film can be inserted in the state of the upright image, the operator can easily confirm the image and the printing efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an auto negative mask equipped with a negative film detecting device embodying the present invention in relation to the inserting direction of the negative film, and FIG. 2 shows a part of the same auto negative mask cut out. A plan view, FIG. 3 is a perspective view showing a notch of a main portion of the same auto negative mask, FIG. 4 is a plan view showing a side edge cord portion of a front-facing negative film, and FIG. 5 is a side edge of a back-facing negative film. FIG. 6 is a plan view showing the code part, FIG. 6 is a flow chart showing a printing process in an automatic photoprinting machine using an auto negative mask equipped with a detection device for carrying out the present invention, and FIG. 7 is a block diagram of the same. In the figure, (1) is an auto negative mask, (2) is an insertion opening,
(3) is a transport path, (4) is an exposure frame, (5) is a transport roller, (6) and (6a) are DX code detection sensors, (8) is a leading edge detection sensor, (12) is a negative film, and (13) ) Indicates a DX code.

Claims (3)

(57) [Scope of utility model registration request] 1. An apparatus for detecting a negative film in an auto negative mask of an automatic photoprinting machine, wherein a leading edge detection sensor is provided in a conveying path near the negative film insertion opening of the automatic negative mask to detect the leading edge of the negative film. A sensor for detecting the latent image barcode described on one side edge of the negative film is provided on one side of the conveying path, and the latent image barcode is detected by the detection sensor. Negative film detection device in the automatic negative mask of the automatic photoprinting machine for detecting the alignment of the lines and controlling the transport of the negative film. 2. A negative film detecting device for an automatic negative mask of an automatic photoprinting machine according to claim 1, wherein said latent image bar code detecting sensors are provided on both sides of a conveying path. 3. The negative film detecting device in an auto negative mask of an automatic photographic printing machine according to claim 1, wherein the leading edge detecting sensor also serves as a latent image barcode detecting sensor.