JPH036547A - Film feeder - Google Patents

Abstract

PURPOSE:To set a control negative film for print conditioning in an exposure window automatically by providing a memory stored with the rotation procedure of a nip roller and a controller for positioning a frame of a control negative film in the exposure window of a film carrier. CONSTITUTION:When a print conditioning mode is specified and the control negative film 30 is inserted into the entrance side of the film carrier 10, the controller 40 decides the insertion direction of the film from the signal of a detection sensor 31 for a DX code and a frame number code. The controller 40 reads a corresponding frame feed procedure out of the memory 60 corresponding to the decision result and the specified mode kind of print conditioning and feeds frames according to the procedure. Consequently, each frame can be set in the exposure window 13A automatically at all times and various print condition setting operations are performed efficiently.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a film feeding device for a photographic printer, and more specifically, to a film feeding device for a photographic printer, and more specifically, a film feeding device for automatically positioning a control negative film for setting printing conditions in an exposure window of a film carrier. The present invention relates to a film feeding device for

[Conventional technology]

Conventionally, automatic film carriers have been used to automatically advance the photographic film frame by frame during printing of the photographic film. This automatic film carrier is designed to feed photographic film in fixed amounts by operating a frame advance key, and to advance frames based on detection of the edge position of the next frame.

[Problems to be Solved by the Invention] However, in the above conventional automatic film carrier, each frame of the control negative film, such as normal frame, under frame, and over frame, is set in order to set the first frame and to set printing conditions. When setting the camera to the exposure window, it had to be done manually. For example, after operating the frame advance key to advance the photographic film by a fixed amount, operate the fine adjustment key without visually checking the positional relationship between the exposure window and the frame, and set the advance of the photographic film to section v&11. I try to set the pieces. Furthermore, without operating such a frame advance key, the nip between the transport roller pair may be opened, photographic film may be inserted from the front side of the film carrier, and a desired frame may be set in the exposure window.

As described above, since the desired frames are manually set in the exposure window, there is a problem in that it takes time to set the frames, making it impossible to perform quick print processing. In particular, when setting each frame of control negative film in the exposure window to determine printing conditions, measuring the density of each frame, or performing a test print of each frame, manual setting is required many times. Therefore, such problems become more prominent.

Additionally, when setting each frame of control negative film manually according to the photometry procedure, if a mistake is made in the setting, the photometry results will be taken in incorrectly, resulting in the problem of not being able to accurately set printing conditions. .

The present invention is intended to solve the above problems, and an object of the present invention is to provide a film feeding device that can automatically set a control negative film in an exposure window for setting printing conditions. .

[Means to solve the problem]

In order to achieve the above object, the present invention provides a motor for rotating a nip roller of a film carrier and a DX of a control negative film inserted into a film carrier.
A sensor that detects film information recorded in barcode format such as a code or a film frame number code, a means for specifying modes for setting various conditions, and a control that determines the nip roller rotation procedure in advance for each mode type and negative film insertion direction. The insertion direction of the control negative is determined based on the stored memory and the signal from the sensor, and the corresponding nip roller rotation procedure is read in correspondence with this determination result and the specified condition setting mode type, and this procedure is executed. A controller 7 is provided which rotates the motor based on the control and positions the frame of the control negative film in the exposure window of the film carrier.

[Effect]

First, when a print condition setting mode is specified and a control negative film is inserted from the film carrier side, the controller determines the film insertion direction based on signals from the DX code and frame number code detection sensors. In correspondence with this determination result and the designated mode type for setting print conditions, the controller reads the corresponding frame advance procedure from the memory, and performs frame advance based on this. Frame advance is started by, for example, operating a frame advance key after the operator inserts the leading edge of the control negative film from the entrance side of the film carrier and contacts the nip portion of the nip roller. , if the film is inserted from the leading edge, frame advancing is performed based on the frame advancing data from the leading edge of the film.Also, if the film is inserted from the trailing edge of the film, frame advancing data is performed from the trailing edge of the film. Frame advance is performed based on.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 2 and 3, a film carrier 10
The printer includes a base body 11, and is set on a table (not shown) of a printer during use.

An entrance guide 12, a carrier mask 13 having an exposure window 13A, and an exit guide 14 are removably attached to the upper surface of the base body 10, and these form a horizontal film transport path in the lateral direction. be done.

Above the entry side guide 12, a detection unit 16 for detecting a DX code and a film frame number code is arranged in order from the film entry side.
, an edge and perforation detection section 17 , and a pair of input conveyance rollers 18 are arranged. Further, above the carrier mask 16, a film pressing means 19 is arranged.

Furthermore, above the exit guide 14, a pair of exit conveyance rollers 2 are provided.
0 and a film guide plate 21 are arranged. A nip release lever 25 is provided at the end of the support shaft 24 of the bracket 23 that supports the output conveyance roller pair 20. By rotating this lever 25, the nip portion of the output conveyance roller pair 20 is opened via a cam portion (not shown), and the slide plate 26 and the connecting lever 27 are opened.
The nip portion of the pair of input conveyance rollers 18 is opened via the cam portion and the cam portion. In conjunction with this, the detection section 16 for the DX code and the like and the film guide plate 21 are opened upward. This allows easy manual insertion and removal of films such as the control negative film 30. Further, a film press release lever 28 is provided at the center of the upper surface of the film carrier 10, and by rotating this lever 28, the film press of the film press means 19 is released. In addition, in Fig. 3, 31 is DX
code and film frame number code detection sensor, 3
Reference numeral 2 indicates an edge sensor, 33 indicates a perforation sensor, and 34 indicates a film leading edge detection sensor, which will be described later.

FIG. 1 schematically shows the film carrier 10 and a controller 40 for positioning each frame of the control negative film 30 in its exposure window 13A. The lower rollers 41 of the pair of input and output conveyance rollers 18.20 are rotated synchronously by a pulse motor 43. The pulse motor 43 is controlled by the controller 4° via a driver 44. Further, the upper roller 45 is
It is attached to the lower roller 41 by a support member 46 so as to be in contact with the lower roller 41 . The support member 46 includes the bracket 23, support shaft 24, slide plate 26, connection lever 27, etc. shown in FIGS. 2 and 3. Then, by rotating the nip release lever 25, the support member 4
6 upward, and the upper roller 45 is attached to the lower roller 4.
1 and open the nip. The nip release lever 25 is provided with a nip state detection sensor 47 for detecting a nip state. Specifically, this sensor 47 is turned on and off by the displacement of the nip release lever 25.
A micro switch is used.

Further, the film leading edge detection sensor 34 is provided close to the nip portion of the input side conveyance roller pair 18. This film leading edge detection sensor 34 acts as an end sensor for detecting the trailing edge of the negative film 12 during normal automatic frame feeding, and by sharing it in this way, the number of sensors used can be reduced. ing.

The pressing roller pair 48 disposed on the film entrance side is for suppressing vertical vibrations of the negative film 30 in the DX code and frame number code detection section 16. The lower roller 49 of this roller pair 48 is urged upward by a support bracket 50, and the negative film 3
When inserting from the conveying direction of 0, it is retracted downward to facilitate the insertion.

The control negative film 30 used to set the exposure conditions of the printer is, as shown in FIGS. 4 and 5, a 135 type piece film with an underframe 51. Normal comma 52
．． The overframes 53 are recorded in order, and the distance ML2 between each frame (equivalent number of motor drive pulses P2) is set larger than the distance between frames of a normal film. Then, between the leading end 30A and the under frame 51, and between the over frame 53 and the trailing end 30B, there is an element negative part 54 with a length of at least one frame or more, in which nothing is recorded. .55 is provided.

Moreover, at the edge of this control negative film 30,
A DX code 56 is recorded in barcode format. As is well known, this DX code 56 has data bits and clock bits arranged in parallel, and each DX code 56
A start bit and an end bit are provided at the leading and trailing ends of the data bits to identify the scanning direction of each barcode to prevent erroneous reading even if the scanning direction of each barcode is reversed. It is being This DX
The code 56 is read by the DX code and frame number code detection sensor 31.

This detection signal is then sent to the controller 40, which determines whether the control negative film 30 is inserted into the film carrier with the front side reversed or whether it is transported forward or backward. That is, depending on whether the start bit or the end bit of the DX code 56 is detected first, the negative film 3
0 is inserted from the tip 30A side or from the rear @30B side. Further, it is determined on which side of the film the detection position of the DX code 56 is located, and the front and back sides of the negative film 30 are determined based on the result of this determination and the result of the determination of the leading and trailing edges.

The controller 40 is composed of a well-known microcomputer, and controls each part based on a program stored in a built-in ROM 60 and various data stored in a RAM 61 and detection signals from various sensors. And R
The OM 60 stores in advance a control program and feeding amount data for feeding the control negative film 12 in a fixed amount in accordance with various modes for setting printing conditions. This data is automatically applied even if the controller negative film 30 is inserted into the film carrier 10 with the leading edge 30A and trailing edge 30B reversed, and each frame is always placed in the exposure window using the same procedure. In order to be able to set the feed amount data, the feed amount data when the tip is inserted from the front end and the feed amount data when the feed amount is inserted from the rear end are stored.

In this control program, the controller negative film 3
A flowchart for sequentially measuring the density of each frame of 0 is shown in FIG.

Further, a keyboard 63 is connected to the controller 40. In addition to density and color balance correction keys 64, the keyboard 63 includes alphanumeric keys 65 and frame advance keys 66 for selecting various modes and inputting numerical values, as well as a fine adjustment key 67, a start key 68, etc. It is provided.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 and 6.

When setting the printing conditions, the pair of transport rollers 18 and 20 are brought into a nip state by operating the nip release lever 25.

This nip state is detected by the nip state detection sensor 47. In this nip state, the alphanumeric keys 65 of the keyboard 63 are operated to designate each frame photometry mode of the control negative film in the print condition setting mode. After that, when the control negative film 30 is inserted from the entrance side of the film carrier 10 and its leading edge 30A is brought into contact with the nip portion of the transport roller pair 18, the control negative film 30 is detected by the film leading edge detection sensor 34.
The tip 30A of is detected. Also, with this insertion, D
By the X code and frame number code detection sensor 31, D
The start bit or end bit of the X code 56 is detected, and based on this signal, the controller 40 determines the front and back of the control negative film 30 and the insertion direction.

Based on this determination result, the controller 40 reads the leading end side feed data as shown in FIG. 4 when the leading end is inserted, and the rear end side sending data as shown in FIG. 5 when the trailing end is inserted.

Next, when the frame advance key 66 is operated, the controller 40 rotates the motor 43 by a fixed amount based on the read data, and sets each frame in the exposure window 13A. Incidentally, during fixed amount feeding, the number of perforations from the perforation sensor 33 is counted to monitor the feeding amount.

Therefore, when inserting the tip, the controller 40 rotates the motor 43 based on the number of drive pulses as shown in FIG. First, the element frame section 54 is set in the exposure window 13A by rotating by 21 drive pulses. In this state,
The light source 71 emits light, and this light is diffused by the diffusion box 72, illuminating the element frame portion 54 of the exposure window 13A. The light transmitted through the negative film 30 reaches the light receiving sensor 74 of the printing exposure section 70, and the base density of the film 30 is photometered by this sensor. After this photometric value is converted into a characteristic value by the characteristic value calculation section 74, it is sent to the controller 40 and stored in a predetermined area of the RAM 61. Next, the controller 40
The motor 43 is rotated by the number of driving IJJ pulses (P2X2), thereby setting the normal coma 52 in the exposure window 13A, and thereafter operating the light receiving sensor 73 in the same manner, and storing this photometric value in the RAM 61. Next, the motor 43 is rotated by the number of drive pulses (-P2), that is, reversely rotated by -22 minutes, and the under frame 51 is set in the exposure window 13A, and the photometric value of this frame 51 is stored in the same manner. . Next, the motor 43 is rotated by the number of drive pulses (P2x2), and the photometric value of the overcoat 53 is similarly stored.

Further, when the control negative film 30 is inserted into the film carrier 10 from the rear end 30B, the feed amount data based on the rear end 30B as shown in FIG. Perform sending.

In this way, the frame feed amount is changed depending on the insertion direction of the control negative film 30, and each frame is moved to the exposure window 13.
Since each frame is automatically set to A and the photometry is performed, there is no setting error that would occur when manually setting it, making it possible to set accurate print conditions.Also, since each frame is automatically set, each frame and Unlike the method in which positioning is performed manually by visually checking the exposure window and operating a fine adjustment key, frame-by-frame advance can be performed efficiently.

In addition, in the above embodiment, the control negative film 30
Although we have explained the frame advance for photometering the elementary light frame portion 54.55 and each frame 51°52.53, there are also other methods such as when setting the reference value of a simple densitometer and each frame of the control negative film 35. When printing frames, round printing, light source correction, light source reference value storage, etc., automatic frame advance of the control negative film is performed in accordance with each of these setting modes. That is, since the normal coma 52 is printed when setting the reference value of the simple densitometer,
Corresponding to this mode, when inserting the leading end of the film, the control negative film 30 is moved by a distance (L1+2XL2), the normal frame 52 is immediately set in the exposure window 13A, and then this frame 52 is printed.

In addition, each frame of the control negative film 30 has 51.5
2. In the mode that prints 53 sequentially, when inserting the leading edge of the film, first move the film 30 to the distance (L1+2xL2).
the normal frame 52 is set in the exposure window 13A, this frame 52 is printed, and then the distance (-L
2), set the under frame 51 in the exposure window 13A, print this frame 51, and then move the distance (
2 x L2) and move the over frame 53 to exposure window 1.
3A and print this frame 53.

Also, during round printing, normal coma 52, under coma 51. When any one of the overframe frames 53 is specified, the specified frame is automatically set in the exposure window 13A, and round exposure is performed by gradually shifting the density and color balance.

In addition, in the light source correction or light source reference value storage mode, after the normal coma 52 is set in the exposure window 13A, the photometry of this frame is performed and stored.

In addition, in each of the above setting modes, the film 30 is
It is determined whether the insertion direction is the leading end or the trailing end, and frame-by-frame advance data that matches this direction of insertion is adopted.

In the above embodiment, a series of operations are performed when each setting mode is designated.
The motor 43 may be controlled so that when the frame advance key is operated after setting A, the under frame 51 and over frame 53 are automatically set in sequence.

〔Effect of the invention〕

As explained above, according to the present invention, the start bit and end bit of the DX code and frame number code are detected, the insertion direction of the control negative film is determined based on this, and the control negative film is made to correspond to the insertion direction. Since each frame of the control negative film is set in the exposure window based on the frame advance data that matches this, each frame is always set in the exposure window dynamically by 4 degrees regardless of the direction in which the control negative film is inserted. This allows you to efficiently set various print conditions.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a film feeding device embodying the present invention. FIG. 2 is a perspective view showing the overall appearance of the film carrier used in the same example. FIG. 3 is a plan view of the same. FIG. 4 is an explanatory diagram showing an example of frame advance data when a control negative film is inserted into a film carrier from the leading end. FIG. 5 is an explanatory diagram showing an example of frame advance data when a control negative film is inserted into the film carrier from the rear end. FIG. 6 is a flowchart showing the frame-by-frame advance processing procedure in the controller in the photometry mode. 18.20...Transport roller pair and tube roller) JO...
Control negative film 31...DX code and frame number code detection sensor 40...Controller 51...Under frame 52...Normal coma 53...Over frame. 10... Film carrier 13A... Exposure window

Claims (1)

[Claims] (1) A motor for rotating the nip roller of the film carrier, a sensor for detecting film information recorded in barcode format such as the DX code and film frame number code of the control negative film inserted into the film carrier, and various conditions. means for specifying a mode of output;
A memory stores the nip roller rotation procedure in advance for each mode type and control negative film insertion direction, and determines the control negative film insertion direction based on the signal from the sensor, and uses this determination result and the specified condition setting mode. and a controller that reads out the rotation procedure of the corresponding nip roller in accordance with the type and rotates the motor based on this procedure to position the frame of the control negative film in the exposure window of the film carrier. Device.