JPH02275935A - Film carrier - Google Patents

Abstract

PURPOSE:To simultaneously perform the classification of a negative and printing processing in parallel by providing a film observation window on the film entrance side of an exposure window and providing a means for forming a loop between the observation window and the exposure window. CONSTITUTION:The film observation window 38 is provided on the film entrance side of the exposure window 35 and the means 65 for forming the loop is provided between the observation window 38 and the exposure window 35 to be integrated with a film carrier 17. Therefore, the classification of the negative is performed to a frame which is set in the film observation window 38 and the film to which the classification of the negative has been performed is reservoired in a loop shape on the entrance side of the exposure window 35. After forming the fixed quantity of loop, the film to which the classification of the negative has been performed is set in the exposure window 35 with a printing start signal to automatically perform printing processing. Thus, it is unnecessary to conventionally perform the classification of the negative to a printed frame which is set in the exposure window and the processing for the classification of the negative and the printing and exposure are simultaneously performed in parallel, thereby shortening a processing time for printing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a film carrier, and more particularly to a film carrier suitable for use in a printer that performs negative verification and prints.

[Prior Art] Color printers have a built-in automatic exposure control device that extracts at least one characteristic value from a color negative image and calculates printing exposure for each color light from an exposure amount calculation formula using this characteristic value. Calculating the amount.

In practice, an exposure control amount having a predetermined relationship with the printing exposure amount is calculated, and the red, green, and blue components of the ambient light are automatically controlled in accordance with the exposure control amount. However, since color negative images have a wide variety of scenes, it is practically difficult to calculate the appropriate printing exposure amount for all color negative images and to create well-finished printed photographs. Therefore, a color negative test is performed before photographic printing, and the amount of correction is determined based on the operator's experience for specific scenes where automatic exposure control does not produce a good finish.

The above-mentioned negative verification is performed using a special negative verification machine when processing a large amount of paper, or by observing a negative image set at the print position before printing and exposing when processing a small amount.

(Problem to be Solved by the Invention) However, in the case of small-volume processing, the negative image set at the print position is observed and verified before printing, which increases the print processing time by the time required for negative verification. Therefore, there is a problem that efficient printing processing cannot be performed.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a film carrier that improves the efficiency of print processing by simultaneously processing negative inspection and printing exposure in a simple configuration. shall be.

Another object of the present invention is to provide a film carrier that can print not only full-size frames of 135 type film but also half-size frames with high efficiency. purpose.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a film carrier with integrally provided with a film observation window and a means for forming a loop between the observation window and the exposure window on the film entrance side of the exposure window. It is something.

In another aspect of the present invention, the film carrier is attached so as to be rotatable by 90° around the printing optical axis of the printer.

In addition, in another invention, instead of the integrated film carrier having the exposure window and the film observation window, on the film entry side of the printing film carrier equipped with the exposure window, a separate body from the film carrier is provided. A film carrier for film observation is also provided, and the film carrier for film observation is composed of a film observation window and a child actor forming a loop between the film observation window and the exposure window.

[Effect]

Negative verification is performed on the frames set in the film observation window, and the negative verified film is stored in a loop on the entrance side of the exposure window. After a certain amount of loops are formed, a print start signal is sent to set the negative-verified film in the exposure window and print processing is automatically performed. Therefore, there is no need to perform negative verification on print frames set in the exposure window as in the past, and negative verification and printing exposure can be processed simultaneously, reducing print processing time. Become.

Further, when printing a full size frame instead of a full size frame, the film carrier is rotated by 90° around the printing optical axis via a rotating means to change the direction of the frame. This makes it possible to simultaneously process printing exposure and negative verification even for half-size frames.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to a field.

In the first illustration of the printer processor, white light emitted from the light source 10 enters the diffusion box 12 after the light quality is adjusted by the light quality adjustment section 11 .

The light quality adjustment unit 11 adjusts the light quality in order to automatically control the exposure amount based on the exposure control amount, and adjusts the cyan, magenta, and yellow filters 13 to 15 on the printing optical axis according to the exposure control amount. automatically inserted into 16. Diffusion box 12
The diffused printing light illuminates a color original image, such as a color negative film 18, set on a film carrier 17.

A printing lens 20 is arranged above the film carrier 17, and forms a negative image on a color paper 21 set at an exposure position. Also, color paper 21
A shutter 25 is disposed between the lens 20 and the printing lens 20, and the shutter 25 is inserted into the printing optical axis 16 by a shutter drive section 26. The color paper 21 is wound up into a roll and stored in a magazine 27.
One frame at a time is pulled out to the exposure position by a pair of transport rollers 28. After exposure, the color paper 21 is sent to a well-known processor 29 where it is developed and then cut frame by frame and outputted to a receiver 111 and 30.

Further, a scanner 31 is arranged diagonally above the film carrier 17. This scanner 31 is composed of a lens 32 and a color image area sensor 33 such as a CCD. The color image area sensor 33 separates and photometers the printing light transmitted through the color negative film 18 into three colors and sends the photometric values to the characteristic value calculation section 34 . The characteristic value calculation unit 34 is composed of a microcomputer (I'ill), and automatically calculates light leakage correction data for three colors based on the three-color separation photometric values of each point. The obtained exposure correction data is sent to a controller 50, which will be described later.

The film carrier 17 has an exposure window 35 at the exposure position.
A carrier mask 36 and a film holder 37 are arranged in this exposure window 35 . 21
- There are two types of Yaria masks 36 available, one for full-size frames and one for half-size frames of 135 type film. Select one of these and set it in the exposure window 35. The film holder 37 is forced downward by a solenoid (not shown) during exposure, and the negative film 1
8, and the energization by the solenoid is released while the film is being transferred, so that there is no problem with the film feed.

This film carrier 17 is attached to a workbench 41 of the printer so as to be rotatable by 90° around an optical axis passing through the center of the exposure window 35 by a rotating means 40. As shown in FIGS. 4 and 5, the rotating means 40 is composed of a base member 42, a rotating member 43, and a positioning ball 44 made of a steel ball disposed between these members 42 and 43. has been done.

A positioning hole 45 is formed in the base member 42 .

A positioning pin 46 protruding from above the workbench 41 fits into this hole 45, thereby positioning the film carrier 17 in the exposure window 35 of the printer. In addition, the base member 4
2, there are storage holes 47 at every 90° pitch in the circumferential direction.
is formed. The ball 44 is placed in this storage hole 47.
It is stored with half of it protruding from the edge of the hole.

The rotating member 43 is attached to the film carrier main body 1.7A side via a screw 50. A conical locking hole 51 is formed in the lower surface of the base member 42 at a position corresponding to the storage hole 47 of the base member 42 . Said hair part) 44
2, the film gear rear body 1 is attached by a ring 52.
It can be freely rotated on the 7A side. In addition, the attachment is performed between the ring 52 and the lower surface of the peripheral edge of the base member 42.
A ring sandwiching plate spring 53 is arranged, and the base member 42
is urged toward the rotating member 43 side. Ring clamping plate spring 53
As shown in FIG. 5, a large number of spring plate portions 54 are provided at a predetermined pitch in the circumferential direction. It should be noted that instead of this ring sandwiching plate spring 53, another spring material such as a coil spring may be used.

As shown in FIG. 2, on the film entrance side of the exposure window 35,
A film viewing window 38 is provided.

As shown in FIG. 1, below the film observation window 38, an illumination light source 60 for illuminating the negative film 18 and a diffusion plate 61 for diffusing the white light from the light tA60 are arranged. The film observation window 38 is formed to the size of a plurality of frames, for example, two frames, in order to efficiently perform negative verification, and allows continuous negative verification to be performed while viewing the connection of the screens.

Moreover, between the film observation window 38 and the exposure window 35,
A loop forming means 65 is arranged to temporarily store the negative film 18 in a loop shape. The loop forming means 65 includes a guide plate 66 for forming a loop by curving it upward, and a pair of film observation window side transport rollers 67 for transporting the negative film 18 so as to form a loop on the guide plate 66. and a pair of general transport rollers 68 on the exposure window side, and a controller 70 that controls the rotation of each of these transport roller pairs 67 and 68.

Further, above the guide plate 66, a movable guide plate 69 is arranged for guiding the leading end of the negative film 18 to the pair of exposure window side transport rollers 68. This movable guide plate 69 transports the leading edge of the negative film 18 to a pair of transport rollers 68 on the exposure window side.
After being guided to the guide plate 6, the mounting is flipped upward around the shaft 69A by a predetermined rotation of the MOKURO 9B, and the guide plate 6
6, form a space for forming a loop. The loop is formed upward as shown in FIG.
It can also be formed downwards.

Further, in this embodiment, the flexibility of the negative film 18 is utilized to form a free loop, but this can also be forcibly formed using, for example, a dancer roller.

Each pair of general feed rollers 67 and 68 is driven by a pulse motor 67A,
These motors 67A and 68A are driven by a controller 70 via drivers 67B and 68B. Note that instead of the pair of conveying rollers 67, the negative film may be held by a heald from above and below and conveyed generally.

As shown in FIG. 6, the controllers 1 to 1 controller 70 are composed of well-known microcomputers, and based on the control program stored in the ROM 72, various data stored in the RAM 73, and output signals from each sensor, the CPU 74
Performs automatic frame-by-frame advance control. In addition, as shown in FIG. 1, various mechanisms such as the light quality adjustment section 11 and the shutter drive section 26 of the printer processor are also controlled. For this reason, a keyboard 77 is provided for controlling frame advance and various mechanisms. As shown in FIG. 1, the keyboard 77 includes alphanumeric keys 78 for setting various modes and inputting set values, and correction keys 79 for inputting negative test results every frame. A frame advance key 80 for advancing frames, a fine adjustment key 81 for finely adjusting frame positions, a start key 82, etc. are provided. In addition, numerals 83 and 84 in FIG. 6 are I10 boats, and each boat 83 and 84 are I10 boats.
．． Each sensor and pulse smoke are connected to 84.

A film detection sensor 86 is arranged on the entrance side of the film observation window side transport roller pair 67. A photoelectric sensor consisting of a light emitter and a light receiver is used as the sensor 86, but a reflective photoelectric sensor, a limit switch for mechanical detection, or the like may be used instead. Also,
On the entrance side of the observation window 38, there is a screen sensor 87 for detecting the leading edge of each frame of the negative film 18 and specifying the screen position, and a reference signal for tracking the position of each frame (in this embodiment). In the example, a reference point detection sensor 88 that emits a film leading edge detection signal) is integrally provided. The rotation of the transport roller pair 67 is stopped based on the edge detection signal from the screen sensor 87, and each frame is accurately set at a predetermined position in the exposure window 35. The reference point detection sensor 88, like the film detection sensor 86, is composed of a light emitter and a light receiver. Based on the film leading edge detection signal from this sensor 88, a counter built in the controller 70 is operated, and the negative film is detected. Corresponding to the transfer amount of 18,
For example, the number of drive pulses for the pair of transport rollers 67 is counted.

A screen sensor 89 and a reference position detection sensor 90 are also provided on the entrance side of the exposure window 35, and each frame of the negative film 18 is accurately positioned in the exposure window 35 in the same manner as on the observation window side. As shown in FIG.
0 is attached within the sensor holding frame 91. In addition,
When storing the position data of each frame together with the negative verification data during negative verification and using this position data during printing, a screen sensor 89 placed at the entry side of the exposure window 35 is used.
can be omitted.

FIG. 7 shows the screen sensor 87 and the reference point detection sensor 8.
8 is disassembled and viewed from below.

Note that the screen detection sensor 89 and the reference point detection sensor 90 arranged on the exposure window side are also configured in the same manner as the screen detection sensor 87 of the film observation window example. A light source 92 made of a cold cathode tube is arranged below the negative film 18 transport path. The light from this light source 92 passes through a slit 95 of a slit plate 94 and illuminates the negative film 18 from below. The slit plate 94 is removed from above into the opening 96A of the mounting plate 96. The light transmitted through the negative film 18 is measured by the light receiving sensor 100. The light receiving sensor is 1
00 is a negative film 1.18 on the back side of the IC board 101.
Five light receiving sections 102A to 1. are arranged at intervals of 2 mm in the width direction.
02 F, are bonded together. In addition, one light receiving section 102F is arranged in parallel with the central light receiving section 102C at an interval of 1 mm in the film feeding direction, and this serves as the light receiving section of the reference point detection sensor 88. The light receiving sections 102A to 102F are composed of well-known amorphous silicon photosensors. Since amorphous material can be used to form a uniform and large-area film on a glass plate or the like, the light receiving parts 102A to 102F can be arranged in a strip shape at a predetermined pitch as in this embodiment.

Each of the light receiving sections 102A to 102F is formed in a rectangular shape elongated in the width direction of the negative film 18.

The dimensions of each light receiving section 102A to 102F are as follows when detecting each screen 18A of 135 type negative film 18.
The length is about 2.4 mm, and the width is about 0.2 mm. The strip-shaped scanning line L a -1-e of the negative film 1B'' by these light receiving units 102A to 102E is
As shown in FIG. In addition, the light receiving part 102Δ~1.02
The width of F is not limited to -, for example, 0.
．． It is preferable to select within the range of 1 to 0.5 mm.

In addition, in this embodiment, the light receiving sections 102A to 102T;
However, the amount of dirt can be increased or decreased as appropriate. This increase/decrease range is preferably in the range of 4 to 10, but is not limited thereto.

Further, a preamplifier/LV conversion circuit 104 shown in FIG. 6 is incorporated on the IC board 101. This preamplifier/+-V conversion circuit 104 includes each light receiving section 102A~
The weak current signal photoelectrically converted at 102F is amplified and then converted into a voltage signal. The substrate 101 is attached to the opening 106 of the mounting plate 105 from the upper blade, thereby opening the opening 106.
A glass plate 103 is fitted inside 6.

As shown in FIG. 6, a preamplifier/LV conversion circuit 10
After the gain is adjusted by the gain adjustment amplifier 107, the voltage value from 4 is output to the first and second characteristic value extraction units 108.
, 110, where the characteristic value V for screen detection is
Min, and (VMaxVMin) are extracted.

That is, in the first extraction section 108, each light receiving section 102△~
Among the voltage signals Va to Ve from 102E, the minimum value is extracted, and this is set as the characteristic value V Min, and the A/D converter 11
Send to 2.

Further, the second extraction unit 110 includes each of the light receiving units 102A to 102.
Among the voltage signals Va to Ve from E, extract the maximum value, set it as VMax, and set it as V Min from the first extraction unit 108.
As the characteristic value (VMax - VMin), the difference between
The signal is sent to the A/D converter 114. 8A/D converter 112,1
The signal digitized at 14 is sent to I of controller 70.
10 sent to boat 83.

In the eighth leap, examples of voltage signals Va to Ve obtained when the negative film 18 and each screen 18A thereof are scanned by the light receiving sections 102Δ to 102E, and characteristic values VMin and VMax extracted from these signals are shown.

An example of (VMax-VMin) is shown below. As can be seen from the figure, the 'IJI characteristic value V Min becomes small within the screen 18Δ, and becomes large in the plain negative portion where the margin between each screen 18A is 1.8 B. Therefore, the controller 70 can determine the edge that is the boundary between the screen 18A and the margin 18B by detecting this characteristic (ifjVMin) and drastic changes. 11:, Hitoshi 2, 'l,
The II characteristic value (VMax - VMin) becomes large within the screen 18Δ, and becomes a value close to "0" in the margin 18132).

Therefore, the controller 1-roller 70 has this characteristic value (VM
The position where ax - VMin) changes to approximately "0" is
By detecting it with the controller 1-roller 70, the edge position of the screen 18A can be similarly determined. and,
These two characteristic values VMin, (VMax −VMin
), the final edge position of screen 1.8A is determined.

The positioning of each screen 18Δ to the film observation window 38 is performed as follows. First, the leading edge of the negative film 18 is detected by the reference position detection sensor 88, and from the time of this detection, the film feed amount is detected by multiplying the number of drive pulses of the pulse motor 67Δ by i1, for example. Based on this and the screen detection signal, the edge position of each screen 18A of the negative film is stored as feed amount data from the leading edge, and the negative film 18 is transported based on this feed amount data, and each screen 18A is is positioned in the film observation window 38.

Basically, each screen 18A of the negative film 18 is positioned in the exposure window 35 in the same manner.

In this way, based on the output signals from the screen detection sensors 87, 89 and the reference position detection sensors 88, 90 of the same specifications,
Since each screen 18A is positioned at each window 35.38 by controlling the conveyor roller pair 67, 68 and pulse motors 67A, 68A, which also have the same specifications, each screen 18A is always positioned at the same stop position at each window 35, 38. 18A will be located.

However, if the edges of each screen 18A are unclear, the screen stop position may be shifted from the normal stop position. This amount of deviation is approximately the same for each window 35, 38 because the frame advance devices of each window 35, 38 have the same specifications. Therefore, if the film observation window 35 is stopped at a position slightly off from the normal stop position, the fine adjustment key 81 of the keyboard 77 is operated to finely adjust the screen stop position. This is done by operating the fine adjustment key 81 in the direction in which you want to move the screen 18Δ, and rotating the pulse motor 67A in the corresponding direction. The positional correction amount input using the fine adjustment key 81 can be detected based on the rotation direction and the number of drive pulses of the pulse motor 67A. Therefore, this rotational force direction and the number of drive pulses are stored in the corresponding area of the RAM 73 for each screen 18A.

When each screen 18A is set in the exposure window 35, the positioning can be performed automatically without operating the fine adjustment key 81 by referring to the signal from the screen detection sensor 89 and the position correction amount. can. The above positioning control procedure is shown in FIGS. 9 and 10. 9 shows the control procedure for the film observation window 38, and FIG. 10 shows the control procedure for the exposure window 35.

Next, the operation of this embodiment will be explained.

First, the negative film 18 is set on the entry side of the observation window 38 of the film carrier 17. With this setting, the film detection sensor 86 is turned on, and each conveyance roller pair 67.6
8 rotates to transport the negative film 18 toward the observation window 38. During this transfer, the leading edge of the negative film 18 is detected by the reference point detection sensor 88, and based on this detection signal, the counter in the controller 70 is reset, and the number of driving pulses of the motor 67A is newly set as the film transfer amount. will be counted.

Further, when the screen detection sensor 87 detects the edge of a frame of the negative film 18, the negative film 18 is
The frame is thereby positioned within the observation window 38. At this time, if the frame position is deviated from the normal position within the observation window 38, the fine adjustment key 81 is operated to set the negative film 18 at a predetermined position. When this fine adjustment key 81 is operated, the number of drive pulses is controlled by the motor 67A.
Since the subtraction or addition force is subtracted or added depending on the direction of rotation, accurate position data can be obtained.

The operator observes the frame located in the observation window 38 and performs a negative test. Note that this negative test is performed using Scanner 31.
Since the exposure amount correction data is automatically calculated, it is sufficient to indicate an approximate direction of correction to supplement this data. For example, any supplementary information that allows scanners to correctly recognize images that are difficult to use, such as the presence or absence of a color area or density area, or whether the image is a portrait or a landscape photo, may be used. The negative test result is input to the controller 70 from the keyboard 77, and is stored in the RAM 73 together with the frame position data of the built-in counter.

When a suitable number of frames have been negative-verified in this way, the leading edge of the negative film 18 reaches the reference position detection sensor 90 on the exposure window 35 side, and this sensor is turned on. Based on this detection signal, the controller 70 stops the rotation of the exposure window side transport roller pair 68 and flips the movable guide plate 69 upward. As a result, on the guide plate 66,
A space is formed in which the negative film 18 is temporarily stored in a loop shape. When a certain amount of the negative film 18 is stored as a free loop, printing is started by the loop detection sensor 85 or by the operator's operation of the star I-key 82. In addition, negative tests are performed one after another in Pudding I/Naka.

Printing is performed as follows. First, after being stored in a predetermined loop amount at the loop forming stage 65, the data is sent to the exposure window 35, and the edge position detection time signal from the screen detection sensor 89, the leading edge detection signal from the reference position detection sensor 90, and the film observation window are sent to the exposure window 35. Each screen is positioned in the exposure window 35 based on the positional correction amount input in step 38. That is, the controller I roller 70 is connected to the exposure window side screen detection sensor 89.
The number of screens from the leading edge of the film is determined based on the number of detected edges. Then, based on this number of screens, the position correction data of a predetermined area of the RAM 73 is read out, and it is determined whether the screen currently located in the exposure window 12 is the one for which the position correction amount was input in the fill 1 and the observation window 35. do. Based on the result of this determination, if there is a positional correction amount, the film is transported in consideration of the positional correction amount. Furthermore, if there is no position correction amount, fixed amount feeding is performed based on the normal edge position detection. Thereby, each screen is accurately positioned in the exposure window 35 without shifting.

The positioned screen is photometered by a scanner, and the exposure amount is calculated based on the photometry result and the NECA test result, and printing exposure is performed based on this. When the printing exposure is completed and a new unexposed color paper 21 is set at the exposure position, the controller 70 outputs a frame advance signal.

Then, each screen is sequentially set in the exposure window 35 based on the loop, frame advance signal, and screen detection signal. The printed and exposed color paper 21 is transferred to the processor section 29.
The film is then sent to , where it is processed.

In addition, when switching from full size to half size of 135 type FILNO, as shown in Figure 11,
Rotate the film carrier 17 counterclockwise around the q optical axis 16. As a result, the rotating member 43 in FIG.
passes over the ball 44 and begins to rotate. And 90
When rotated, the upper half of the ball 44 is housed in the locking hole 51, and rotation is restricted at this position. After this 90° rotation of the film carrier 17, the carrier mask 36 of the film carrier 17 is replaced from a full-size one to a half-size one. In the figure, numeral 35A indicates an opening for a full size frame, and 35B indicates an opening for a barf size frame. In addition, instead of replacing this carrier mask 36, as shown in Shokosho No. 615135,
It is also possible to use a variable carrier mask in which the mask opening changes from full size to half size in conjunction with 90° rotation of the film carrier.

In the above embodiment, the exposure window 35 is provided on the film carrier 17.
Although the present invention is not limited to this, the exposure window 120 and the observation window 38 are integrally provided and attached to the workbench of the printer processor, as shown in FIG. and observation window 121 in separate film carrier 12.
3.12i may be provided. In this case,
The negative film 18 is positioned at a predetermined position in the observation window 121 by a pair of transport rollers 127 rotated by a motor 125 via a timing gear 126. film carrier 1
On the film carrier 124 side between 23 and 1.24,
A movable guide plate 128 is arranged to guide the leading end of the negative film 18 to the film carrier 123 of the exposure window 120. This movable guide plate 127, fill l,
First ◇: After L1 is guided to the second film carrier 123 side, it is flipped upward by the rotation of the motor 129, forming a loop between each film carrier 123 and 124. Film carrier 1 equipped with observation window 121 in this way
24, and by installing this film carrier 124 alongside the existing film J and carrier 123, which are simply provided with an exposure window, the efficiency of the existing printer processor can be simplified and improved.

In each of the above embodiments, the film observation window 38121 is
Although it is designed to be formed to have the length of a frame, and two frames are successively tested as negatives, it may be formed to have a size of one frame, or three or more frames.

Furthermore, in the above embodiment, the scanner 31 measures each point of each frame of the negative film 18, patterns are identified based on this photometric value, and highly accurate printing exposure is performed. If you do it carefully, it's just Cds
It is also possible to calculate the exposure amount based only on the LATD using a photometric sensor such as , and perform printing exposure based on this, and in this case, the scanner can be omitted.

〔Effect of the invention〕

As explained above, according to the present invention, a film observation window is provided on the film entrance side of the exposure window, and means for forming a loop between this observation window and the exposure window is provided. There is no need to perform negative verification on the print frames set in the window, and negative verification and printing processing can be performed simultaneously and in parallel. Therefore, printing processing can be performed efficiently.

Further, half-size printing can be easily performed by rotating the film carrier by 90 degrees around the printing optical axis via a rotating means and positioning the film observation window on the front side. In this case, the orientation of the frame is the same as in the case of a full-size frame, so negative verification can be easily performed using bad coins that are similar to full-size frames. In addition, since the frame is positioned in front of the operator due to the 90° rotation of the film carrier, negative inspection becomes even easier.

This makes it possible to simultaneously process printing (=1 exposure and negative inspection) even for half-size frames.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a printer processor using a film carrier embodying the present invention. FIG. 2 is a perspective view showing the overall appearance of the filter carrier in the same embodiment. FIG. 3 is a plan view of the same. FIG. 4 is a longitudinal sectional view of the film carrier to show the rotating means. FIG. 5 is an exploded perspective view showing the rotating means. FIG. 6 is a block diagram showing the function of detecting the screen based on the signal from the light receiving sensor. FIG. 7 is an exploded perspective view of the screen detection sensor. FIG. 8 is an explanatory diagram showing a negative film, signals from each light receiving section when the screen of the negative film is scanned, and characteristic values extracted from the signals. FIG. 9 is a flowchart showing the automatic frame advance procedure in the film viewing window. FIG. 10 is a flowchart showing the automatic frame advance procedure in the exposure window. FIG. 11 is a plan view showing a state in which the direction of the film carrier is changed by 90 degrees by the rotating means. FIG. 12 is a plan view showing a film carrier of another embodiment. 65 ・ ・ ・ 70 ・ ・ ・ 86 ・ ・ ・ 87.89 88, 90 Loop forming means] Controller film detection sensor...Screen detection sensor...Reference position detection sensor. 17...Film carrier 18...Negative film 35.120...Exposure window 38.121...Film observation window n u 'o

Claims (3)

[Claims] (1) A film carrier for guiding a film to an exposure window for printing, comprising: a film observation window on the film entrance side of the exposure window; and means for forming a loop between the observation window and the exposure window; A film carrier characterized by being provided integrally with the film carrier. (2) A film carrier for guiding film to an exposure window for printing, comprising: a film observation window on the film entrance side of the exposure window; and means for forming a loop between the observation window and the exposure window; A film carrier characterized in that it is integrally provided with a film carrier, and the film carrier is rotatably attached by 90 degrees around the printing optical axis of a printer. (3) Means provided separately from the film carrier on the film entry side of the printing film carrier equipped with an exposure window and forming a loop between the film observation window and the film observation window and the exposure window. A film carrier for film observation, characterized by comprising: