JPH0392838A - Photograph printing method - Google Patents

Abstract

PURPOSE:To efficiently print a film including both full-size frames and trimmed frames by moving the film in a second direction at the end of full-size printing, and trimming and printing the frames to be trimmed according to stored information. CONSTITUTION:With the full-size frame set to a print position, the frame on a negative film 18 is printed in full size on a color paper 42 via a zoom lens 38. According to trimming frame position information stored in the area 63c of a memory 63, the negative film 18 is reversely moved to set the first frame to be trimmed to the print position. Trimming information is read out of the area 63b of the memory 63, and a zoom lens 38 and a paper mask 40 are set in accordance with trimming conditions. Thus, the film including both the full- size frames and the frames to be trimmed can be efficiently printed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a photographic printing method, and more particularly to a method of printing a film in which full-size print frames and trimmed print frames coexist.

[Conventional technology]

In photographic printing, in which frames recorded on film are exposed to a specified photographic paper, full-size prints are generally performed, in which the entire frame recorded on film is exposed to light.
A trimming print is performed in which a specific area is enlarged and printed as needed.

In addition to specifying cropping conditions by looking at a photo of the completed full-size print, such trimming prints also require recording the cropping conditions on the film at the time of shooting, as disclosed in Japanese Patent Application Laid-Open No. 61-254943. ,
There are some that read this mechanically during printing and trim and print.

By the way, when doing trimming prints, it is rare to trim all the frames of one film, and in many cases, some frames are trimmed and the other frames are printed as usual at full size. do. In addition, there are cases in which not only trimmed prints but also full-size prints are performed for the same frame.

In such cases, conventionally, depending on whether the frame is a full-size print frame or a trimmed frame, the printing conditions are changed for each frame and printed one frame at a time, or the full-size print is first performed, and then the trimming function is applied again. Only the prints that required trimming were extracted and printed using a printer that had the same technology.

[Problems to be Solved by the Invention] However, when printing a film in which full-size print frames and trimmed print frames coexist, the above-mentioned two methods have a problem in that they are extremely inefficient. In other words, in the method of printing one frame at a time,
It is necessary to change printing conditions such as printing magnification for each frame. On the other hand, with the method of performing full-size printing and cropped printing separately, the film must be set twice, and when printing one frame both full-size and cropped, it is necessary to print the same frame with different colors. It is necessary to redundantly adjust exposure conditions such as balance.

[Purpose of the invention]

The present invention has been made in view of the above, and an object of the present invention is to provide a photographic printing method that can efficiently print a film in which full-size print frames and trimmed print frames coexist.

[Means to solve the problem]

In order to achieve the above object, the present invention transfers the film in a first direction to produce a full size print. Along with doing this,
While the film is being transported in the first direction, the trimming information recorded on the trimmed print frame is read and stored, and when full-size printing is completed, the film is transported in the second direction and the trimming information recorded on the trimmed print frame is read and stored. The trimming print is performed on the trimmed print frame based on the stored trimming information.

(Function) Since the present invention is structured as described above, while the film is being transported in the first direction, full-size printing is performed continuously with the printing magnification fixed at the standard magnification.
While the film is being transported in the second direction, necessary trimming print frames are printed while adjusting trimming conditions such as printing magnification. That is, the printing magnification needs to be adjusted only when the film is transferred in the second direction.

Further, when performing both full-size and cropping printing for the same frame, the exposure conditions for full-size printing can be used as they are, and there is no need to make new adjustments during trimming printing.

〔Example〕

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

FIG. 1 shows the structure of a printing apparatus for carrying out the photographic printing method of this embodiment. First, the mechanical configuration of the photoprinting apparatus will be explained along the optical path.

The printing light emitted from the light source 10 is passed through a cyan filter 1.
2a, magenta filter 12b, yellow filter 12
After passing through c, the light enters the diffusion box 14. The amount of insertion of these color filters 12a to 12c into the optical path is adjusted by a filter adjustment section l4, thereby adjusting the ratio and intensity of the three colors of the printing light. Further, the diffusion box 15 is a rectangular cylinder whose inner surface is a mirror surface, with diffusion plates arranged on both end faces thereof, and sufficiently diffuses the color-corrected printing light.

The printing light that has passed through the diffuser [15] illuminates a negative film 18 on a film carrier 16 placed at the printing position. The negative film 18 is a long film containing both full-size print frames and trimmed print frames, and as shown in FIG. Trimming mark 19a for specifying the trimming range. 19
b is attached. The negative film 18 is then triangulated by a pair of feed rollers 20 and 22 placed at both ends of the negative carrier in the forward direction (rightward in the figure) shown by the solid line while full-size printing is being performed. While being moved, the objects are transported in the opposite direction (toward the left in the figure) as indicated by the dotted lines. The pair of feed rollers 20 and 22 are interlocked by a chain or the like, and are rotated forward and backward by a pulse motor 24.

Further, a film mask 26 is arranged on the negative film 18 to maintain the flatness of the negative film 18.

An end detection section 2 is placed on the left side of the film carrier 16 to detect the end of the negative film 18. That is, when the negative film 18 is running forward, the leading edge of the negative film 18 is detected, and when the negative film 18 is running backward, the trailing edge is detected.

Further, a data reading device 30 is arranged on the left side of the feed roller 20, and detects trimming marks 19a and 19b recorded on a frame two frames before the print position. The data reading device 30 includes an edge sensor 34 that detects the edge 32 of the frame, as shown in FIG.
, an image sensor 36a that detects the position of the trimming mark 19a, and an image sensor 36b that detects the position of the trimming mark 19b.

Note that the data reading device 30 may be located on the film carrier 16 or on the right side of the film carrier 16. Furthermore, if the trimming information is recorded in a barcode, a barcode reader is used.

Next, the printing light that has passed through the negative film passes through a zoom lens 38 for printing and reaches the color bar, -42, whose exposure range is regulated by a paper mask 40, and the image on the negative film is transferred to the color paper. 42. The zoom lens 38 is driven by a motor 44,
The printing magnification can be adjusted. Further, the paper mask 40 is moved by the color paper 4 by the motor 46.
The exposure range is adjusted according to the trimming range. The color paper 42 is pulled out one frame at a time from the paper roll 48, passes through a guide roller 49, and reaches a pair of pull-out rollers 51 driven by a pulse motor 50. Then, the exposed portion is cut by a cutter 52 placed next to the paper mask 40.
It is adapted to be sent to a photographic developing device (not shown).

A shutter 54 whose opening and closing are controlled by a shutter drive section 53 is arranged between the zoom lens 38 and the color paper 42, and exposure is performed by opening the shutter 54 for a certain period of time.

A scanner 56 consisting of an image sensor and a lens is arranged diagonally above the print position, and measures the transmitted light at each point of the frame set at the print position. The output signal of this scanner 56 is transmitted to a characteristic value extraction section 5 which will be described later.
7.

Next, the structure of the control department of the photo printing apparatus according to this embodiment will be explained.

The characteristic value extraction section 57 extracts characteristic values such as average transmission density, maximum density, and minimum density for each color based on the output signal of the scanner 57 for each frame. The exposure calculation unit 58 calculates the exposure using these characteristic values and sends it to a controller 6l, which will be described later.

The condition determination unit 60 determines trimming conditions (printing magnification, masking size of the paper mask 40) based on signals from the data reading device 30 and the transport control unit 70, which will be described later. To be more specific, when there is an output from the image sensor 36a or 36b, it is determined that the frame is a frame to be trimmed, and the output of the conveyance control unit 70 after the output of the edge sensor 34 until the output of the image sensor 36a is output. From the number of pulses, the left and right length l1 from the center point of the frame is determined. Further, from the position of the trimming mark 19b detected by the image sensor 19,b, the vertical length C2 from the center point of the frame is determined, and the trimming area (2I!.z X2j2+) is determined from this.

The calculation unit 62 calculates the printing magnification and masking size from the size of the trimming area determined by the condition determination unit 60 and the width of the color paper 42. From this, the focal length cent position of the zoom lens 38 and the set position of the paper mask 40 are determined and sent to the controller 61 as trimming information. In addition, since the data reading device W30 is placed two frames before the print position, the calculation unit 62 is set at the print position.
Request trimming information before the frame.

The trimming control unit 66 controls the pulse motor 4 via drivers 61 and 68 based on the signal from the controller 61.
4, 46t-control and drive the zoom lens 38 and paper mask 40 to adjust the printing magnification and masking range.

Based on the signals from the end detection sensor 28, the data reading device 30, and the controller 61, the conveyance control unit 70
The drive of the pulse motor 24 is controlled via the driver 72. To be more specific, after a print start operation is performed, the motor 24 is first rotated in the forward direction to perform full-size printing, and the negative film 18 is transported forward (rightward) one frame at a time. At this time, the moving position of the negative film 18 is detected by counting the drive pulses supplied to the pulse motor 24 with a pulse counter.

Furthermore, in order to position the frame at the print position, the number of drive pulses is counted after receiving a signal from the edge sensor 34 of the data reading device 30, and it is determined whether this count value has reached a certain value. It will be done. Also, in order to perform trimming printing, the motor 24 is reversed, and the negative film 18 is moved in the opposite direction (to the left).
Based on the position information of the trimming print frame, this frame is positioned at the print position.

The controller 6l is for overall control of the printing device, and is used for full-size printing. The filter adjustment unit 14 is controlled based on the signal from the exposure calculation unit 58, and if the frame placed at the print position is a frame to be trimmed, the exposure of this frame is set to the area 63a of the memory 63. to be memorized. Then, during trimming printing, the exposure amount of the corresponding frame is read out, and the exposure amount is corrected taking into account the printing magnification and reciprocity law.
Based on this, the filter adjustment section 14 is controlled.

Further, the controller 61 stores the focal length set position of the zoom lens 38 and the set position of the paper mask 40 in the area 63b of the memory 63, and stores the position of the trimming print frame in the area 63c of the information from the calculation unit 62. . Then, during trimming printing, these data are read from the memory 63 and supplied to a trimming control section 66 and a conveyance control section 70, which will be described later.

Further, the controller 61 also controls the shutter drive section 53.

Next, the operation of the above embodiment will be explained with reference to FIG.

First, set the negative film 18 on the film carrier 16 and press the print start button (not shown).
Under the control of the transport control section 70, forward transport of the negative film 18 begins. At this time, the conveyance control section 70 measures the amount of movement of the negative film 18 by counting drive pulses. During this transfer, the edge sensor 34 detects the edge 32 of the first frame, and the data reading device 30 detects the trimming marks 19a, 19b, and determines trimming conditions based on this. After the edge is detected, the film transport is stopped after the negative film l8 has been transported a certain length, and the first frame is set at the printing position.

Next, the printing light emitted from the light source 10 illuminates the negative film 18 after passing through the color filters 12a to 12C and the diffusion box 15. Then, the scanner 56 detects the light transmitted through the frames of the negative film 18, and after calculating the exposure amount in the exposure calculation section 5, it is sent to the controller 6l.

When the frame set at the print position is a full-size print frame, the controller 61 adjusts the insertion amount of the color filters 12a to 12c into the optical path according to the exposure amount.

After this adjustment, the shutter 54 is opened for a certain period of time, and the first frame of one day's worth of negative film is printed in full size on the color paper 42 using the zoom lens 38. At this time, the zoom lens 38 is fixed at a standard magnification, and the Baber mask 40 is set at a position within the standard range.

On the other hand, if the frame set at the print position is a trimmed print frame, the trimming information (focal length set position, paper mask set position) and exposure amount determined by the condition determining section 60 and the calculation section 62 are set by the controller. 6
1 to the memory 63. Further, the amount of film movement determined by counting the driving pulses is stored in the memory 63 as frame position information.

Thereafter, the negative film 18 is transferred to the conveyance control section 7 in the same manner as described above.
0, the frame is moved rightward one frame at a time, printing is performed only on the full-size print frame, and information on the trimming print frame is read and stored in the memory 63.

When the end detection sensor 28 detects the end of the negative film 18 during this full-size printing process, the transport control unit 7
0 stops the transfer of the negative film 18.

Next, the negative film l8 is transported in the opposite direction based on the trimming frame position information stored in the area 63c of the memory 63, and the first trimming print frame is set at the printing position. Then, area 63b of memory 63
The trimming information is read out from , and the zoom lens and paper mask 40 are set according to the trimming conditions. Further, the exposure amount is corrected in consideration of the trimming information read from the area 63a of the memory 63, and the color filters 12a to 12c are adjusted according to the result of this calculation. Immediately after this, the shutter 54 is opened to perform trimming printing. In this way, when trimming prints, the exposure amount measured during full-size printing is used, so when both full-size and trimming prints are made, as will be explained later, variations in color or density will occur between each. Never. Note that in this trimming print, the average density may be measured again using the scanner 56.

Thereafter, the transport control unit 70 places the frames to be trimmed and printed one after another in the print position, repeats the trimming and printing in the same manner, and when the end detection sensor 28 detects the end of the negative film l8, all printing operations are completed. end.

In this embodiment, since the trimming information is read during full-size printing as described above, there is no need to read the trimming information each time during trimming printing.

On the other hand, during full-size printing, the position information or frame number and exposure amount of the trimmed print frame are memorized, and when there is a trimmed print frame, the film is run in reverse and printed using the stored position information or frame number. It is also possible to determine the frame, read the trimming information, and perform trimming printing using the stored exposure amount.

In the above embodiment, only the printing magnification and the exposure range are used as trimming conditions, but the center position of the main subject may also be recorded on the film as a trimming condition. In this case, the film carrier 16 is By driving in the Y direction, the center position of the main subject is aligned with the optical axis of the zoom lens.

In addition, full-size prints are often requested for trimmed print frames. In this case, the third
In the figure, full-size printing may be performed after storing trimming information and the like. Furthermore, if all the frames are trimming print frames, the order of printing may be changed so that the trimming print is performed first and the full size print is performed later.

Modern negative films have frame numbers represented by barcodes printed on the side, so this frame number barcode can be used to identify the frame centered at the print position, and also to identify the frame based on the barcode reader. The frame position information may be combined with the amount of movement of the number barcode.

〔Effect of the invention〕

As explained above, in the present invention, full-size printing is performed by transporting the film in the first direction, and during that time, the trimming information is read and recorded in 4. Since the trimming information is memorized, the film is transferred in the second direction, and trimming printing is performed based on the previously memorized trimming information, there is no need to change the printing conditions for each frame. In addition, one film can be printed continuously, and a film containing a mixture of full-size print frames and trimmed print frames can be efficiently printed.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the configuration of a photoprinting apparatus for carrying out the photoprinting method of the present invention. FIG. 2 is an explanatory diagram showing the positional relationship of essential parts of the photographic printing apparatus shown in FIG. 1. FIG. FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention. 18...Negative film 19a, 19b...Trimming mark 28...End detection sensor 30...Data reading device 38...Zoom lens 40...Paper mask 58...Exposure amount calculation section 61 ...Controller 62...Calculation section 63...Memory 66...Trimming control section 70...Transportation control section.

Claims (1)

[Claims] (1) In a film printing method in which a full-size print frame in which the entire frame of the film is printed and a trimming print frame in which a part of the frame is printed based on trimming information recorded on the film are mixed, the film is Full-size printing is performed by transporting in the first direction, and the trimming information recorded for the trimming print frame during transport in the first direction is read and stored, and full-size printing is completed. A photographic printing method characterized in that the film is transported in a second direction at a point in time, and a trimming print is performed on a trimming print frame based on the stored trimming information.