JPH0644126B2 - Carriage for printing machine of additional photo - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a carrier for a printing apparatus for a reprint photograph, which is exposed on the basis of image information of an already-printed photographic paper when the photographic paper is reprinted.

[Prior art]

Generally, in a photographic printing apparatus, the transmitted light of the light source which passes through the original image film is irradiated to the photographic paper through a lens unit to be exposed. When printing a color print, the light from the light source reaches the original image film through a light control filter composed of yellow (Y), magenta (M), and cyan (C) complementary color filters. There is.

Here, an image density sensor composed of an optical sensor such as a photodiode is provided between the original film and the lens unit so that the image density information of the original film can be detected.

This image density information is sent to the exposure controller, the exposure amount of each color is calculated by the following equation, and the photographic printing process can be performed with the optimum exposure amount suitable for the original image film. Note that this is based on the well-known Evans's theorem: ogE _i = ogE _Ni + C _J (D _NJ −D _NNj ).
...... (1) where, E: exposure of the original film E _N: exposure of the standard original film C: correction by concentration of the original film coefficient D _N: original film of LATD D _NN: standard original film LATD i: Any color of red, green or blue j: Any color of Y, M or C By the way, with such a photo printing device, there is no problem at the first stage like simultaneous printing, but the customer may need to reprint such as reprinting. If you place an order and print it based on the LATD of the original film, even if you use the same machine for the previous printing and the current printing, the light source and the original printing paper (printing at the time of simultaneous printing) The finish may differ from that of paper). Further, in the case of an original image film having a color that is deviated in particular, the worker makes a visual judgment and corrects it by mixing the subjectivity, so that the same correction is not always made when reordering, and the same complaint occurs.

Therefore, the present applicant proposes that the density at the time of printing is adjusted based on the printing paper printed by the original film at the time of printing to make the finish the same as the original printing paper. . In this case, it is preferable to detect the density of the image printed on the printing paper, the light beam from the light source is reflected by the printing paper, the density of this reflected light is detected, and based on this information, according to the equation (1), The obtained exposure amount is corrected.

[Problems to be solved by the invention]

However, if there are many types of image patterns to be reprinted, if the location of the original image film at the time of printing and the location of the corresponding already printed photographic paper are distant from each other, it will be difficult to collate them and it will be erroneous. It is conceivable to collate and detect image information completely different from the original film from the photographic paper.

In addition, a separate space for the existing printing paper is required, and the device itself becomes large.

In consideration of the above facts, the present invention can easily collate the original film and the already-printed photographic paper when performing printing on the basis of the image information of the photographic paper that has already been satisfactorily printed in addition to the image information of the original film. It is an object of the present invention to provide a carrier for a printing apparatus for reprinting photographs, which is capable of performing the above-mentioned processing and can downsize the apparatus itself.

[Means for solving problems]

The carrier for the printing apparatus of the reprinted photograph according to the present invention is the same as the finished state of the preprinted photographic printing paper based on the image information of the preprinted photographic printing paper which has been subjected to the printing processing by this original drawing film in addition to the image information of the original printing film. It is used for a printing apparatus for reprinting photographs that controls the exposure so that it will be finished in a different color, and a through hole is provided for the image portion of the original image film to be printed. Is a carrier for transmitting an image pattern to be disposed on the carrier, the carrier having a photographic paper arranging portion for arranging the already-printed photographic paper.

[Action]

According to the present invention, the image information of the printing paper that has already been printed is detected, and exposure is performed using both the image information of this printing paper and the image information of the original film that has been conventionally applied to the exposure amount correction. Since the quantity is determined, it can be finished in the same way as the burned photographic paper.

Here, in the carrier used in the present invention, it is possible to arrange an original film and a corresponding preprinted photographic printing paper, and these can be set as a pair to the printing position to facilitate mutual verification. There are no work mistakes. Also, because it is not necessary to separately provide a basin for arranging photographic paper,
The device itself can be miniaturized.

Example of Invention

Embodiments of the present invention will be described in detail below with reference to the drawings.
FIG. 1 shows an outline of an example of the photographic printing apparatus 10, in which light emitted from a light source 12 is applied to a negative film 18 as an original image film arranged on a carrier 16 via a light diffusion tube 14. However, the structure is such that it is printed on the photographic printing paper 22 through the lens unit 20.

Between the light source 12 and the light diffusion tube 14, yellow (Y),
A dimming filter 24 including three complementary color filters of magenta (M) and cyan (C) is interposed. The dimming filter 24 is controlled by a signal from an exposure controller 26 via drivers 28, 30, 32, respectively. Normally, the colors unnecessary in the process of white light exposure are changed to Y, M, C. The color is reduced on each filter.

Further, a density sensor 34 for detecting image density information of the three primary colors of red (R), green (G) and blue (B) is arranged between the negative film 18 and the lens unit 20. . The density sensor 34 is composed of a group of optical sensors such as photodiodes, and supplies the density distribution information signal of the negative film 18 transmitted by the light source 12 to the exposure controller 26 via the amplifier 36.

The exposure controller 26 adjusts the amounts of the three color components of YMC based on the well-known Evans's theorem to determine the correction coefficient so that the color becomes gray, and the exposure amount E is calculated according to the equation (1).
_i is controlled.

That is, after the energization (exposure start) of the solenoid 40 that constitutes the shutter 38 by this E _i, each dimming filter 24 is inserted into the optical path from the one whose exposure amount is sufficient, and the exposure of that color is finished. The entire exposure time is controlled.

In the carrier 16 in which the negative film 18 is arranged, the photographic paper arranging section 44 for arranging the photographic paper 42 which has already been printed
The negative film 18 serves as an arrangement portion for the printing paper 42 which has already been printed.

An opening 46 is formed on the printing surface of the printing paper 42 of the printing paper placement unit 44.
Is provided, and the light source 1 is provided via an optical system such as a mirror 48.
2, the light rays applied to the negative film 18 and the light rays applied to the photographic printing paper 42 have the same change.

There are E size and L size for the size of the printing paper, and there are types with and without white lines. The size of the opening 46 must be below the screen within a small white line so that light other than image information is not received, and at the same time, it must be black so that the opening itself does not reflect. The light source 12
The optical system such as the mirror 48 disposed between the photographic paper 42 and the photographic paper 42 may use another optical system such as a lens unit depending on the location of the light source 12, and the light source 12 is directly connected to the negative film 18 and the photographic paper 42. If irradiation is possible, it is not always necessary.

A density sensor 50 having the same structure as the above-described density sensor 34 is provided between the mirror 48 and the photographic paper arranging portion 44 of the carrier 16.
Is arranged so that the density of the printing surface of the printing paper 42 reflected by the irradiation from the light source 12 (in this embodiment, the light source 12A shown by the imaginary line in FIG. 1 reflected by the mirror 48) can be detected. ing. This density is preferably an average value of the densities of the entire image.

The density information signal detected by the density sensor 50 is supplied to the exposure controller 26 via the amplifier 52. The bottom surface 54 of the photographic paper arranging unit 44 is gray, and when the photographic paper arranging unit 42 is not arranged on the photographic paper arranging unit 44 during the printing process of the negative film 18, the same density as that in the correction-free state in the Evans theorem is used. The information signal is supplied to the exposure controller 26.

The exposure controller 26, as shown in FIG.
U56 (Central Processing Unit), RA
M58 (random access memory), ROM60
It is composed of a (read only memory) and a bus 62 such as a data bus or a control bus connecting these.

The output signals of the amplifiers 36 and 52 are respectively supplied to the input / output port 66 via the A / D (analog / digital) converter 64, and based on these signals, the solenoid 40 and the drivers 28, 30, A signal is supplied to 32.

The ROM 60 stores the following equation based on the equation (1).

ogE _i = ogE _Ni + C _j (D _Nj −D _NNj ) + γ _j (D _Pj −D _NPj ) ... (2) where γ: correction factor based on print paper density D _P : print paper density D _NP : standard Density of printing paper Based on this equation (2), the CPU 56 calculates the exposure amount E _{i of} each color (where i is red, green, and blue), and further, the exposure time and the operation time of each light control filter 24. It is designed to be calculated.

Next, the carrier 16 will be described in detail.

As shown in FIG. 3, the carrier 16 is composed of a base 70 and a lid 72, one side of each long side of which is connected by a hinge 74 so that the principal surfaces can be brought into contact with each other. Base 70
A limit switch 75 is attached to this so that the open / closed state of the lid 72 can be detected. The signal line of the limit switch 75 is connected to the exposure controller 26.

Two protrusions 76, 78 extending parallel to the long side are integrally formed on the front side of the base 70 on the paper surface of FIG. 3, and a space between them is used as a guide passage 80 at both ends in the width direction of the negative film 18. It is said that. Thereby, the negative film 18 is surely moved linearly when it is moved in the longitudinal direction (direction of arrow A in FIG. 3).

The negative film 18 is provided at an intermediate portion in the longitudinal direction of the guide passage 80.
A rectangular through hole 82 corresponding to one portion of the above is provided, and the negative film 18 receives the light beam from the light source 12 from there.

Further, the through hole 8 is formed in the lid body 72 in correspondence with the through hole 82.
6 is provided so that the light rays transmitted through the negative film 18 are applied to the lens unit 20.

Below the through hole 86 in FIG. 3, a substantially U-shaped frame 88 is provided.
Is attached. As shown in FIG. 4, the cross section of the frame 88 at a right angle to the axis is substantially L-shaped.
2 can be inserted and held. The base 70 is provided with the opening 46 corresponding to the portion surrounded by the frame 88, and as shown in FIG. 1, the printing paper 42 is printed with the lid 72 closed. The surface is adapted to face the mirror 48.

That is, the predetermined pattern of the negative film 18 is the through hole 8
By inserting the end of the photographic paper 42, which has been satisfactorily printed by this pattern at the time of being conveyed to the positions 2 and 86, into the frame 88, it is possible to obtain the density information of the photographic paper 42 when the negative film 18 is exposed. You can do it.

The printing procedure of the photographic printing apparatus configured as described above will be described below with reference to the flow chart of FIG. The light source 1
It is assumed that 2 is already energized and irradiated with light rays.

First, place the negative film 18 on the carrier 16 and
The pattern to be baked is moved in the direction of arrow A in the figure or in the opposite direction to face the through hole 82. At the time of this movement, the negative film 18 has the protrusions 76 of the carrier 16 at both widthwise end portions thereof.
Since it is guided by 78, it can move linearly without meandering.

When the worker completes the placement of the negative film 18 at the predetermined position, the worker next inserts the pre-baked printing paper 42 corresponding to the pattern of the negative film 18 into the frame 88, and the printing paper placement unit 44. To place. This allows the carrier 16
, A predetermined pattern of the negative film 18 and a photographic printing paper 42 favorably printed by the predetermined pattern can be arranged as a pair.
Work such as matching becomes easy.

After the above preparatory steps are completed, in step 104, when the lid body 72 of the carrier 16 is rotated about the support shaft of the hinge 74 and the base 70 and the lid body 72 are closed, the limit switch 75 is set. Detected by step 1
Move to 06. In step 106, the density sensor 34
Thus, the density of the pattern is detected by the light beam from the light source 12 which has passed through the negative film 18. At the same time, the light source 12 also irradiates the photographic printing paper 42 via the mirror 48.
This light ray is reflected by the printing paper 42, and the density of the image printed on the printing paper 42 is detected by the density sensor 50.

That is, with the same light source, the negative film 18 and the printing paper 4
Since the density of 2 is detected, there is no lamp fluctuation that occurs when the density is measured with different light sources, and the power for energizing the light source can be reduced.

Here, the densities of the negative film 18 and the printing paper 42 detected by the density sensors 34 and 50 are the average values of the entire image, but may be only one point of an important part. Also, photographic paper 4
2 is not arranged in the photographic paper arranging section 44, the bottom surface 54 of the photographic paper arranging section 44 is preliminarily grayed.
The density detected by the density sensor 50 is substantially equal to the density of standard photographic printing paper.

In step 108, the exposure amount of each color is calculated by the equation (2) based on each density detected in step 106. When the photographic printing paper 42 is not arranged as described above, the same calculation as in the equation (1) is performed.

Next, the exposure amount of each color obtained in step 108 is converted into the exposure time, sorted in the order of shorter exposure time in step 110, and then in step 112, the shutter 3 is printed.
Open 8 (energize solenoid 40). As a result, the light transmitted through the negative film 18 in a predetermined amount is transmitted to the lens unit 20.
The photographic paper 22 is reached via the and the exposure is started.

In step 114, each dimming filter 24 is operated for each predetermined time, and the cut is performed in order from the color of which the exposure is completed. When the exposure of all the colors is completed, the process proceeds to step 116, and the shutter 38 is closed. This will be described later.

Next, when the worker opens the carrier 16 at step 118, this is detected by the limit switch 75, and the printing process ends. If another original image film and printing paper are set in the carrier 16 and the carrier 16 is closed, the printing process is continued.

Next, the subroutine of step 114 will be described in detail with reference to FIG.

In the step 110, the dimming filters 24 are rearranged in ascending order of exposure time. For example, if the order is yellow (filter F1), magenta (filter F2), and cyan (filter F3), first the yellow exposure is performed in step 122. It is determined whether or not the time has ended, and when it is determined that the time has ended, a signal is sent from the exposure controller 26 to the driver 28 in step 124, and the filter F1 is inserted into the optical path. Next, when it is determined in step 126 that the magenta exposure time has ended, the driver 30 is operated in step 128 to insert the filter F2 into the optical path.
Similarly, if it is determined in step 130 that the cyan exposure time, which is the longest exposure time, has ended, step 13
In step 2, the driver 32 is operated to insert the filter F3 into the optical path, and the process returns to the main routine.

In this way, since each light control filter is controlled in consideration of not only the density of the negative film 18 but also the density of the already printed good printing paper 42, the printing paper and the printing paper 42 (for example It is possible to make the finish almost the same as that of the photographic paper for simultaneous printing).

Further, since the light source 12 is shared by the negative film 18 and the photographic printing paper 42, there is no fluctuation in chromaticity and the like, and the cost can be reduced as compared with the case where separate light sources are provided.

Further, since the negative film 18 and the corresponding preprinted photographic printing paper 42 can be arranged on the carrier 16 as a pair,
These collation work becomes easy.

In this embodiment, one light source is used for both the transmission of the original image film and the reflection of the preprinted printing paper, but the original image film 18
Even if a light source for irradiating the photographic printing paper 42 is separately provided, the same finished state as that of the prebaked photographic printing paper 42 can be obtained.

〔The invention's effect〕

As described above, the carrier for the printing apparatus of the additional photo according to the present invention is the original film and the preprinted photographic paper when the additional printing is performed based on the image information of the photographic printing paper already printed in addition to the image information of the original printing film. It has an excellent effect that it is possible to easily compare and, and the device itself can be downsized.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a photographic printing apparatus according to this embodiment, FIG. 2 is a control block diagram, FIG. 3 is a perspective view of a carrier, and FIG. 4 is a sectional view taken along line IV-IV of FIG. FIG. 5 is a control flow chart of this embodiment, and FIG. 6 is an exposure control subroutine. 10 ... Photo printing device, 12 ... Light source, 16 ... Carrier, 18 ... Negative film, 24 ... Dimming filter, 26 ... Exposure controller, 34, 50 ... Density sensor, 42 ... Printing paper, 44 ... Printing paper placement section.

Claims (2)

[Claims] 1. Exposure control based on the image information of the original film and the image information of the already-printed photographic paper which has been subjected to printing processing by the original image film so that the color tone is the same as the finished state of the already-printed photographic paper. Used for a printing apparatus for additional prints, a through hole for the image portion of the original film to be printed is provided, and the original image film is held during the printing process so that the image image arranged on the through hole is transmitted. A carrier for a printing apparatus of a reprint photograph, characterized in that the carrier is provided with a photographic paper arranging section for arranging the already-printed photographic paper. 2. The photographic paper arranging portion is provided with a photographic paper exposing hole for exposing a printing surface of the pre-baked photographic paper adjacent to the through hole. A carrier for a printing apparatus for reprinting a photograph according to item (1).