JPH043156A - Copying device - Google Patents

Abstract

PURPOSE:To enable the management corresponding to an image and the measured density value by fetching the signal outputted by a density measuring section upon lapse of the time corresponding to the time until a copying photosensitive material arrives at the density measuring section after passage detecting means detect the passage of the photosensitive material to measure image density. CONSTITUTION:The time t1 required for the passage detecting sensor 48 detects the passage of color paper after the passage detecting sensor 34 detects the passage of the color paper and the time t2 required for the density measuring part of the first image of the color paper 15 arrives at the density measuring section 28 after the passage detecting sensor 34 detects the passage of the color paper are previously stored in a controller. The controller executes the control so as to fetch the signal outputted by the density measuring section 28 upon lapse of the time corresponding to the time until the copying photosensitive material arrives at the density measuring section after the passage detecting means 34, 48 detect the passage of the photosensitive material. The constitution of the copying device is simplified in this way and the management corresponding to the image and the measured density value is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus, and more particularly, the present invention is provided with a copying section for copying an image onto a photosensitive material for copying according to copying conditions, and the copying apparatus is provided with a copying section that copies an image on a copying photosensitive material according to copying conditions. The present invention relates to a copying apparatus that corrects copying conditions.

[Prior Art and Problems to be Solved by the Invention] In a copying device such as a printer processor, an image of a reference film is printed on vapor, which is a photosensitive material for copying, and after copying is performed, development, fixing, washing, drying, etc. Perform each process to create a print.

In addition, as post-processing, the quality of the print is evaluated, and if the quality is poor, the image density of the print is measured, and the copying conditions of the printing process, that is, the exposure amount, is corrected based on the measured density value. conduct. In this post-processing, the image density is successively measured for each of a plurality of images copied onto a print, so it is necessary to manage the measured density values in correspondence with the images. In this way, when post-processing is performed for each image, it is necessary to manage each image and the data of each image in correspondence.

For this reason, a method has been proposed in which each image and data are classified and managed by making them correspond to each other by punching holes at different numbers and intervals in photographic paper (Japanese Patent Laid-Open No. 63-234
(See Publication No. 234).

However, in the above classification and management method, in order to manage images and image data in correspondence, it is necessary to install a punching device for punching holes and a sensor for detecting punch holes in the copying device. The configuration was complicated.

In addition, when automatically measuring the density of each image as post-processing for each image, it is necessary to measure the density of each image with the density measurement part located at the a-large measurement position, but the image position can be detected using a punch hole. In the method of measuring the image density using a conventional method, it is necessary to install a sensor for detecting punch holes in the vicinity of the density measurement position, making the configuration of the copying apparatus complicated.

Further, in a copying apparatus having a density measuring section that automatically measures the density of an image, the level of the output signal of the density measuring section fluctuates due to fluctuations in power supply voltage, etc., so the level of the output signal is adjusted. However, the power supply voltage may fluctuate after this level adjustment, and in this case, accurate concentration values cannot be obtained.

The present invention has been made in consideration of the above facts, and an object of the present invention is to provide a copying apparatus that can measure image density and manage the image in correspondence with the measured density value with a simple configuration. .

Another object of the present invention is to provide a copying apparatus that can reduce the effects of fluctuations in power supply voltage and obtain more accurate density values.

[Means to solve the problem]

The invention as set forth in claim (1) is a copying apparatus comprising a copying section for copying an image onto a photosensitive material for copying according to copying conditions, and correcting the copying conditions based on the density of the copied image, the copying apparatus comprising: a processing section that processes the copied photosensitive material while conveying it; a density measuring section that is placed on the outlet side of the processing section that measures the density and outputs a signal; passage detection means for detecting passage of the photosensitive material to be copied, and control so as to capture a signal output by the density measurement section after a time period corresponding to the time from when the passage detection means detects the passage of the photosensitive material to be copied to the density measurement section has elapsed. and control means for.

The invention as set forth in claim (2) is a copying apparatus comprising a copying section for copying an image onto a photosensitive material for copying according to copying conditions, and correcting the copying conditions based on the density of the copied image, the copying apparatus comprising: a processing section that processes the copied photosensitive material while conveying it; a density measurement section that is placed on the output side of the processing section that measures the density and outputs a signal; and a density measurement section that takes in the output signal of the density measurement section and processes it in the processing section. and control means for controlling the density measuring section so as to adjust the level of the output signal of the density measuring section immediately before the copied photosensitive material passes through the density measuring section.

Furthermore, a passage detection means for detecting the pressure of passage of the copy photosensitive material is provided on the upstream side in the conveyance direction from the density measurement section, and the control means corresponds to the time from when the passage detection means detects the passage of the copy photosensitive material until it reaches the density measurement section. The concentration measuring section can be controlled so as to adjust the level of the output signal of the concentration measuring section immediately before the time elapses.

Further, a mark detection means is provided for applying a mark to the photosensitive material for copying in correspondence with the image position and for detecting the presence or absence of the mark at a predetermined position on the conveyance path, and the control means is configured such that the mark detection means detects the presence of the mark. The concentration measuring section can be controlled to adjust the level of the output signal of the concentration measuring section based on the timing.

Further, a detection means for detecting the passage of the photosensitive copy material is arranged between the processing section and the density measurement section, and the control means controls the output signal of the density measurement section when the detection means detects the passage of the photosensitive copy material. The concentration measuring section can be controlled to perform level adjustment.

[Effect]

In the invention described in claim (1), the passage detecting means detects passage of the photosensitive material to be copied and is controlled to capture the signal output from the density measuring section after a time corresponding to the time from when the photosensitive material to be copied reaches the density measuring section. do. Therefore, by managing the elapsed time after the passage is detected, it is possible to detect the timing at which the image corresponds to the density measurement section, so there is no need to provide a sensor to detect the image position, and the configuration of the copying device can be simplified. can. Furthermore, when measuring the density of multiple images copied onto a photosensitive material, the order of the images corresponds to the order of the captured signals, so it is possible to manage the images and the measured density values in correspondence. can.

In the invention described in claim (2), the level of the output signal of the density measuring section is adjusted immediately before the photosensitive copy material processed in the processing section passes through the density measuring section. Therefore, changes in the output signal due to fluctuations in power supply voltage, etc. can be minimized, and more accurate concentration values can be obtained.

C Embodiment] First Embodiment Next, a first embodiment of the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a printer processor 10, which is a type of copying apparatus according to the present invention. printer processor 1
0 is covered with a caning 36 on the outside. The printer processor 10 also includes a work table 17 that protrudes from the caning 36. A negative carrier 19 on which a negative film 21 is placed is placed on the upper surface of the work table 17.

Furthermore, a light source section 11 that constitutes a part of the copying section 16 is installed below the work table 17.

The light source unit 11 includes a light source (not shown) and a plurality of filters (not shown), and the light rays emitted from the light source reach the negative film 21 set on the negative carrier 19 via the plurality of filters. ing.

An optical system 29 that constitutes a part of the copying section 16 is attached to an arm section 27 that protrudes from the printer processor 10 . The optical system 29 includes a lens (not shown) and a shutter (not shown), and is arranged on the optical axis of the light beam.

The light beam transmitted through the negative film 21 passes through a lens and a color paper 15 set in the exposure chamber 14.
The image of the negative film 21 is formed on top. As a result, the image on the negative film 21 is copied onto the color paper 15 as an image 54. In addition, in Fig. 4, r
The portion indicated by J represents the density measurement site of each image 54.

A paper magazine 12 is mounted above the arm portion 27 in which a long color paper 15, which is a photosensitive material for copying, is wound up in layers on a reel 13 and stored therein. A roller 23 is disposed on the arm portion 27 and conveys the color paper 15 to the exposure chamber 14 while holding the color paper 15 therebetween. Further, the color paper 15 on which the image of the negative film 21 has been copied in the exposure chamber 14 is stored in a reservoir section 1 adjacent to the exposure chamber 14.
8- Transported.

In FIG. 1, the reservoir section 18 stocks the color vapor 15 that has been subjected to the printing process, and absorbs the difference in processing time between the copying section 16 that performs the printing process and the processor section 25 that performs each process of development, fixing, and washing.

The color paper 15 discharged from the reservoir section 18 is conveyed to the processor section 25 adjacent to the reservoir section 18.

A passage detection sensor 34 is arranged between the reservoir section 18 and the processor section 25. As shown in FIG. 5, the passage detection sensor 34 includes a light-emitting element 34A that emits infrared rays and a light-receiving element 34B, which are arranged opposite to each other across the conveyance path of the color paper 15. Each of them is connected to a control device 40. The passage detection sensor 34 detects passage of the color paper 15 carried into the processor section 25, and sends the detection result to the control device 40.
Output to. When the passage detection sensor 34 detects passage of the color paper 15, the control device 40 determines that the color paper 15 has been carried into the processor section 25.

A plurality of conveyance rollers 38 are disposed within the processor section 25 and rotate at a constant speed by receiving the driving force of a motor (not shown). The color paper 15 carried into the processor section 25 is conveyed at a constant speed by a conveyance roller 38, and is transferred to the color developing section 20 and the bleach-fixing section 2 of the processor section 25.
2. Pass through a rinsing section 24 and a drying section 26 in sequence. In the color development section 20, the color paper 15 is immersed in a developer 2OA to perform a development process. The developed color paper 15 is conveyed to a bleach-fixing section 22, where the color paper 15 is immersed in a fixing solution 22Ai and subjected to a fixing process. The color paper 15 that has undergone the fixing process is conveyed to the rinsing section 24, where the color paper 15 is washed with washing water 2.
Soak in 4A and wash with water. The washed color paper 15 is conveyed to a drying section 26, where the color paper 15 is wound around a roller and dried by exposing it to high temperature air. The color paper 15 that has passed through the drying section 26 is carried out from the processor section 25, guided by a plurality of pairs of rollers 46, and conveyed to a density measuring section 28 disposed above the drying section 26.

A color paper 1 is placed between the drying section 26 and the density measuring section 28.
A passage detection sensor 48 is disposed to detect jamming of No. 5 (see FIG. 2).

The passage detection sensor 48 includes a light emitting element 48A and a light receiving element 48B.
The light emitting element 48A and the light receiving element 48B are each connected to the control device 40 (see FIG. 5).

The passage detection sensor 48 detects the passage of the color paper 15 carried out from the processor section 25 and conveyed to the density measurement section 28, and outputs the detection result to the control device 40. When the passage detection sensor 48 detects passage of the color paper 15, the control device 40 determines that the color paper 15 has been conveyed to the exit side of the processor section 25.

As shown in FIG. 2, the density measuring section 28 includes a density meter 30 and a white plate 32 having a reference density and used for white level adjustment. The densitometer 30 and the white plate 32 are arranged to face each other, and a conveyance path for the color paper 15 is formed between the densitometer 30 and the white plate 32. The densitometer 30 is connected to a control device 40, and emits light from a built-in light source, and detects the amount of light that hits the white plate 32 or the color paper 15 at the measurement position on the conveyance path (the position indicated by arrow A in FIG. 2) and is reflected. By doing so, the density of the white plate 32 and the color paper 15 is measured, and a signal is output to the control device 40.

A conveying roller 31 and an O-roller 31A are provided downstream of the density measuring section 28 in the color vapor conveying direction. As shown in FIG.
2A, the drive force of the motor 42 is transmitted, the color paper 15 is rotated, and the color paper 15 is pinched and conveyed together with the roller 31A. The motor 42 is connected to the control device 40 via a motor drive circuit 44, and the processor section 25
The driving of the color paper 15 is controlled by a control device 40 so that the color paper 15 is conveyed at the same speed as the conveyance roller 38 inside.

A pair of canters 35 for cutting the color paper are disposed downstream of the conveyance roller 31 in the color vapor conveyance direction, facing each other across the color paper 15 conveyance path. The color paper 15 cut by the cutter 35 is held between a pair of rollers 37 and passed through the opening 38 to the cane puffer 3.
6 is discharged to a vapor receiving box 39 (see Fig. 1) installed outside.

The control device 40 determines the required time 1+ from when the passage detection sensor 34 detects the passage of the color paper until the passage detection sensor 48 detects the passage of the color paper (see FIG. 3).
After the passage detection sensor 34 detects passage of the color paper 15, the first image 54A (fourth image) of the color paper 15 is displayed.
The required time tz (see FIG. 3) until the concentration measurement site reaches the concentration measurement section 28 (see FIG. 3) is stored in advance.

In the first embodiment, the processor section 25 and the concentration measuring section 2
The conveyance speed of the color paper 15 within the color paper 8 is constant. Therefore, the required time 1. and t2 are always constant and can be determined by dividing the conveyance distance of the color paper 15 by the conveyance speed. The control device 40 determines the time ts (
(see Figure 4) is also stored. Further, a display 52 such as a liquid crystal or a CRT is connected to the control device 40. The control device 40 displays information such as jamming of the color paper 15 on the display 52.

Next, the operation of the first embodiment will be explained with reference to the flowchart of FIG. Note that this flowchart is executed by the control device 40 when the user of the printer processor 10 instructs to start processing.

The user of the printer processor 10 prints the color paper 15
While setting the paper magazine 12 loaded with
A negative film 21 is set on the negative carrier 19, and the printer processor 10 is instructed to start processing.

When the start of processing is instructed, in step 100 it is determined whether the passage detection sensor 34 disposed on the entrance side of the processor section 25 has detected passage of the color paper 15. Steps 7 and 100 are repeated while no passage is detected.

Further, when the start of processing is instructed, the light source of the light source section 11 is turned on in the copying section 16 in parallel with the processing of the control device 40, and the negative film 21 is positioned.

Next, the exposure amount is calculated, and based on this exposure amount, the light source section 11
At the same time, the shank of the optical system 29 is opened. As a result, the light beam emitted from the light source passes through the filter and the negative film 21 and exposes the color paper 15 positioned at the exposure position in the exposure chamber 14. As a result, the image of the negative film is printed on the color paper 15 as the image 54. The color paper 15 on which the image has been printed is conveyed to the processor section 25 via the reservoir section 18.

When the color paper 15 is carried into the processor section 25,
The passage detection sensor 34 detects passage of the color paper 15, and the determination at step 100 is affirmed, and the process moves to step 102.

In step 102, the timer is reset and measurement of the elapsed time since the passage detection sensor 34 detects passage of the color paper 15 is started. Next, in step 104, the light source of the densitometer 30 is turned on.

It takes some time for the light source to stabilize after it is turned on. Therefore, in the first embodiment, the color paper 15
The light source is turned on immediately after being carried into the prosensor section 25. In step 106, the timer reset in step 102 is monitored, and it is determined whether the elapsed time indicated by the timer has reached the required time t1. If the required time t1 has not elapsed since the timer was reset, step 1
Repeat step 06. When the elapsed time reaches the required time t, the process moves to step 108.

The color paper 15 carried into the processor section 25 in parallel with the processing of steps 102 to 106 described above.
Each process is performed within the processor section 25. That is,
The color paper 15 is conveyed to the color development section 20, where it is immersed in a developer 20A and subjected to development processing.

The developed color paper 15 is conveyed to a bleach-fixing section 22 and subjected to a fixing process. Fixed color paper 1
5 is transported to the rinsing section 24 and washed with water. The washed color paper 15 is transported to a drying section 26 and dried. The color paper 15 on which the drying process has been completed is carried out from the processor section and conveyed to the density measuring section 28.

In step 108, it is determined whether the passage detection sensor 48 disposed on the output side j of the processor section 25 has detected passage of the color paper 15. If the passing detection sensor 48 does not detect the passage of the color paper 15, it is determined that jamming of the color paper 15 has occurred in the processor unit 25, and in step 120, the occurrence of jamming is displayed on the display 52, and processing is performed. end.

When the passage detection sensor 48 detects passage of the color paper 15, the color paper 15 is sent to the processor t! It is determined that the white plate 32 has been transported normally, and in step 110, the white plate 32 is photometered to adjust the white level to bring the output signal to a reference level.

In step 112, the timer reset in step 102 is monitored, and the elapsed time indicated by the timer is the required time t2.
It is determined whether or not. If the required time t2 has not elapsed since the timer was reset, step 112
repeat. When the elapsed time reaches the required time t2, the process moves to step 114. When the required time t2 has elapsed since the timer was reset, the density measurement portion of the image 54A first copied onto the color paper 15 is located at the density measurement position of the density measurement unit 28. Therefore, step 1
At step 14, the output signal of the densitometer 30 is captured and stored as the density value of the image 54A. Further, the timer is reset, and the time elapsed since the density of the image 54A was measured is measured.

In step 116, the timer reset in step 114 is monitored, and the elapsed time indicated by the timer is the required time t3.
It is determined whether or not. If the required time t3 has not elapsed since the timer was reset, step 116 is repeated. Step 1 when the elapsed time reaches the required time t3
Move to 18. In step 118, it is determined whether the processing has ended. This determination may be made based on whether a predetermined period of time has elapsed since the passage detection sensor 48 determined that the color paper 15 had passed, and the output signal of the densitometer 30 may be at a reference level corresponding to the white plate 32. You may proceed depending on whether or not it has happened.

If it is determined in step 118 that the processing is not completed, the process returns to step 114 to capture and store the signal again, and repeats steps 114 to 118 until the determination in step 118 is affirmative. The order in which the plurality of density values obtained in this way were obtained corresponds to the order in which the plurality of images 54 were copied onto the color paper 15.
The image 54 and the captured density value can be managed in correspondence with each other. If the determination in step 118 is affirmative, the process ends.

In this way, in the first embodiment, the state in which the density measurement part of the image 54 is located at the density measurement position of the density measurement section 28 is achieved by managing the elapsed time. There is no need to provide one, and the configuration of the printer processor 10 can be simplified.

Furthermore, in the first embodiment, since the order of the plurality of images 54 copied onto the color paper 15 corresponds to the order of the captured density values, the images 54 and the captured density values can be managed in correspondence. I can do it.

Furthermore, in the first embodiment, the white level of the densitometer 30 is adjusted when the passage detection sensor 48 disposed between the processor section 25 and the density measurement section 28 detects the passage of the color paper 15. Therefore, changes in the 8-power signal due to fluctuations in power supply voltage, etc. can be minimized, and a more accurate output signal can be obtained.

Furthermore, in the first embodiment, the light source of the densitometer 30 is turned on when the passage detection sensor 34 disposed on the entrance side of the processor unit 25 detects the passage of the color paper 15. The amount of light becomes stable.

In the first embodiment, when the passing detection sensor 48 detects the passing of the color paper 15, the level of the output signal of the density measuring section 28 is adjusted. Even if the level of the output signal of the density measuring section 28 is adjusted immediately before the time corresponding to the time from when the detection sensor 34 detects the passing of the color paper 15 until the color paper 15 reaches the density measuring section 28 has elapsed. good.

Second Embodiment Next, a second embodiment of the present invention will be described. Note that the same parts as in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

FIG. 7 shows a printer processor 10 according to the second embodiment.
It is shown. In the second embodiment, a punching device 56 is disposed between the exposure chamber 14 and the reservoir section 18. A punching device 56 punches holes as marks on the color paper 15. The punching device 56 is installed so that the distance between the punching position of the color paper 15 and the image exposure position in the exposure chamber 14 is a distance @a. The punching device 56 punches holes 58 in the color paper 15 at the same time that the image is copied onto the color paper 15 in the exposure chamber 14 . As a result, as shown in FIG.
A punch hole 58A corresponding to the image 60A is punched at a separated position. In FIG. 9, the direction of the arrow indicates the direction of conveyance of the color paper 15, and the "x" indicates the density measurement site. Similarly, for the other images 60B and 60C160D, the punch holes 58B and 5 corresponding to each image are
8C158D is drilled at a distance [a].

Further, a punch hole detection section 62 is arranged between the drying section 26 and the concentration measurement section 28, where the passage detection sensor 48 was arranged in the first embodiment.

The punch hole detection section 62 is configured by a light emitting element 64 and a light receiving element 66 arranged opposite to each other with the color paper 15 conveying path interposed therebetween. The light emitting element 64 and the light receiving element 66 are each connected to the control device 40 (see FIG. 1O).
4 irradiates a light beam toward the light receiving element 66;
receives the light beam transmitted through the punched hole 58 of the color paper 15, converts it into an electrical signal, and outputs it to the control device 40. The control device 40 determines that a punched hole has been detected when the magnitude of the electrical signal output from the light receiving element 66 is greater than or equal to a predetermined value. Further, the punch hole detection position of the punch hole detection section 62 is the position shown by arrow B in FIG. They are separated by a distance along the transport path.

A conveyance roller 68 and a roller 68A are arranged between the punch hole detection section 62 and the density measurement section 28. As shown in FIG. 10, the conveyance roller 68 is attached to the rotating shaft 70A of the pulse motor 70, rotates upon transmission of the driving force of the pulse motor 70, and conveys the color paper 15 by sandwiching it together with the roller 68A. . The pulse motor 70 is connected to the control device 40 via a pulse motor drive circuit 72, and its driving is controlled by the control device 40.

Further, the pulse motor 70 has a built-in encoder 74 that converts the amount of rotation of the rotating shaft 70A into the number of pulses. The encoder 74 is connected to the control device 40 via a pulse counter 76 that adds up the number of pulses output by the encoder 74. As a result, the control device 40 controls the pulse motor 7.
The rotation amount of the rotation 111170A of 0, that is, the conveyance distance of the color paper 15 can be detected. Note that the conveying roller 31 in the first embodiment is a driven roller to which no driving force is transmitted in the second embodiment.

Further, the control device 40 detects the density measurement portion of the image and the density of the density measurement portion 28 when the punch hole 58A is located at the punch hole detection portion of the punch hole detection portion 62 (the position indicated by arrow B in FIG. 8). The distance between the measurement site (position shown by arrow A in Fig. 8), that is, the distance corresponding to the sum of the distance a shown in Fig. 9 and the distance shown in Fig. 8, is stored as the number of pulses N. ing.

Next, the operation of the second embodiment will be explained with reference to the flowchart of FIG. 11. Note that this flowchart also applies to the first
As in the embodiment, when the user of the printer processor 10 instructs the start of processing, the control device 40 executes the processing.

When the start of processing is instructed, the concentration measurement table is cleared in step 130. In the concentration measurement table, a plurality of timings at which the output signal of the concentration meter 30 is taken into the control device 40 are registered as count values of the number of pulses. Next, in step 132, it is determined whether the passage detection sensor 34 has detected passage of the color paper 15 or not. Step 132 is repeated while no passage is detected.

When the start of processing is instructed, the copying section 16 copies the image on the negative film 21 set in the negative carrier 19 onto the color paper 15. At this time, the punching device 56 is activated at the same time. As a result, as shown in FIG.
Punch holes 58 corresponding to each image are punched at separate positions. The color paper 15 with punched holes 58 is conveyed to the processor section 25 via the reservoir section 18. When the color paper 15 is conveyed to the processor section 25, the passage detection sensor 34 detects the passage of the color paper 15, and the determination in step 132 is affirmed, and the process proceeds to step 134.

In step 134, the timer is reset and measurement of the elapsed time since the passage detection sensor 34 detects passage of the color paper 15 is started. Next, in step 136, the light source of the densitometer 30 is turned on. Step 138 Step 1
The timer reset in step 34 is monitored, and it is determined whether the elapsed time indicated by the timer has reached the required time t1. If the required time t1 has not elapsed since the timer was reset, step 138 is repeated. When the elapsed time reaches the required time t, the process moves to step 140.

In step 140, it is determined whether the punch hole detection section 62 arranged on the output side of the processor section detects the punch hole 58 of the color paper 15, that is, whether the color paper 15 has been conveyed to the output side of the processor section 25. do. If the punch hole detection unit 62 does not detect the passing of the color paper 15, it is determined that jamming of the color paper 15 has occurred in the processor unit 25, and in step 162, the occurrence of jamming is displayed on the display 52, and processing is performed. end.

The punch hole detection unit 62 detects the punch hole 58 of the color paper 15.
If detected, it is determined that the color paper 15 has been normally conveyed within the processor section 25, and in step 142, the white plate 32 is photometered and the white level is adjusted using the output signal as a reference level. Since the timing of this white level adjustment is immediately before the density measuring section 28 measures the density of the image 60, changes in the output signal of the densitometer 30 due to fluctuations in the N applied voltage, etc. can be minimized.

In step 144, the count value S of the pulse counter 76 is
Incorporate. In step 146, the detected punch hole 5
A calculated value C of the number of pulses indicating the count value of the pulse counter 76 when the density measurement part of the image 60 corresponding to image 8 is located at the density measurement part is obtained and registered in the density measurement table. This calculated value C can be determined by the sum of the number of pulses N stored in advance in the control device 40 and the count value S taken in at step 144.

A state in which the count value S of the pulse counter 76 is equal to the calculated value C of the number of pulses obtained here becomes the timing for performing the cut process.

In step 148, the pulse motor 70 is driven to convey the color paper 15. In step 150, it is determined whether the punch hole detection section 62 has detected the punch hole 58 of the color paper 15. If no punch holes are detected,
At step 152, the count value of the pulse counter 76 is taken in, and the process moves to step 154. In step 154, it is determined whether the count value of the number of pulses taken in in step 152 is registered in the concentration measurement table.

If the determination is negative, the process returns to step 148, and steps 148 to 154 are repeated until the punch hole 58 is detected or the registration in the concentration measurement table matches the count value of the pulse counter 76. If the determination in step 150 is affirmative, the process returns to step 144, and in steps 144 and 146, the calculated value C of the number of pulses is registered in the concentration measurement table.

If the determination in step 154 is affirmative, step 1
56. In this state, the image 60 is displayed at the concentration measurement site.
concentration measurement site is located.

Then, in step 156, the concentration measurement signal output from the concentration meter is taken in. In step 158, the corresponding registration in the concentration measurement table is canceled. In step 160, it is determined whether the processing has ended. This determination may be made based on whether the punch hole detection sensor 62 has not detected a punch hole for a predetermined period of time or longer, and may be determined based on whether there is no registration in the density measurement table after step 158 is executed. Good too. If it is determined in step 160 that the processing has not been completed, the process returns to step 148. Further, if the determination in step 160 is affirmative, the process ends.

As described above, in the second embodiment, the punch hole 58 corresponding to the image 60 is punched by the punching device 56, and when the punch hole detection section 62 detects the punch hole 58, the density measurement section 30 punches the punch hole 58 corresponding to the image 60.
Since the level of the output signal is adjusted, changes in the output signal due to fluctuations in power supply voltage, etc. can be minimized, and more accurate concentration values can be obtained.

Furthermore, in the second embodiment, the white level adjustment and density measurement are performed based on the timing at which the punch hole detection section 62 detects a punch hole, so there is no need to provide a separate sensor, etc., and the printer processor 10 can be simplified.

Note that in the second embodiment, the level of the output signal of the density measurement section 30 is adjusted when the punch hole detection section 62 detects the punch hole 58, but the present invention is not particularly limited to this. For example, the level of the output signal may be adjusted after a certain period of time has passed since the punch hole detection section 62 detects the punch hole.

Further, in the first and second embodiments, a single color paper 15
Although the processing has been described above, the present invention can also be applied to the case where a plurality of color papers 15 are sequentially processed.

Furthermore, in the first embodiment, the passage detection sensor 34 serving as passage detection means is disposed between the reservoir section 18 and the processor section 25, but the communication detection sensor 34 is connected to the color paper 15 conveyance from the density measurement section 28. It only needs to be placed on the upstream side of the direction, and for example, it may be placed anywhere within the exposure chamber 14, the reservoir section 18, or the processor section 25.

Further, in the first and second embodiments, the output signal of the densitometer 30 is taken in a state where the density measurement part of the image 54 is located at the density measurement part of the density measurement section 28, but the image 54
The conveyance of the color paper 15 is stopped with the density measurement part of the density measurement part 28 located at the density measurement part of the density measurement part 28, and the density measurement part 3
0 may be activated to obtain the concentration value.

Further, in the first and second embodiments, the captured signals are stored as density values in the control device 40, but the measurement results may be printed.

〔Effect of the invention〕

In the invention described in claim (1), the signal output from the density measuring section is captured after a time period corresponding to the time from when the passage detecting means detects the passage of the photosensitive material to be copied to the density measuring section has elapsed. , an excellent effect can be obtained in that it is possible to measure the image density and manage the image and the measured density value in correspondence with a simple configuration.

In the invention as claimed in claim (2), the level of the output signal of the density measuring section is adjusted immediately before the copying photosensitive material processed in the processing section passes through the density measuring section, so that fluctuations in power supply voltage, etc. The excellent effect of reducing the influence and obtaining more accurate concentration values can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a printer processor according to the first embodiment, and FIG. 2 is a schematic cross-sectional diagram of the vicinity of the density measurement section in FIG. 1.
Fig. 3 is a schematic diagram of the conveyance path for explaining the required time, Fig. 4 is a plan view of the color paper, Fig. 5 is a schematic block diagram of the first embodiment, and Fig. 6 is a schematic diagram of the first embodiment. A flowchart explaining the operation, FIG. 7 is a schematic configuration diagram of the printer processor according to the second embodiment, FIG. 8 is a schematic sectional view of the vicinity of the density measurement section in FIG. 7, and FIG. 9 is a color diagram of the second embodiment. A plan view showing the paper, FIG. 10 is a schematic block diagram of the second embodiment,
FIG. 11 is a flowchart explaining the operation of the second embodiment. DESCRIPTION OF SYMBOLS 10... Printer processor, 16... Copying part, 25... Processor part, 28, 30, 34, 40, 48, 58, 62, 76... Concentration measurement part, - Concentration meter, - Passage detection sensor , ・Control device, ・Passage detection sensor, φ bunch hole, ・Punch hole detection section, conflict pulse counter.

Claims (5)

[Claims] (1) A copying apparatus that includes a copying section that copies an image onto a photosensitive material for copying according to copying conditions, and that corrects the copying conditions based on the density of the copied image, and conveys the photosensitive material for copying on which the image has been copied. a processing section that performs processing while processing the photosensitive material; a density measurement section that is placed on the output side of the processing section that measures the density and outputs a signal; and a passage detection means that detects passage of the photosensitive material to be copied on the upstream side of the density measurement section in the conveyance direction. and a control means for controlling so as to capture a signal output by the density measuring section after a time corresponding to the time from when the passage detecting means detects passage of the photosensitive material to be copied to the density measuring section has elapsed. Device. (2) A copying apparatus that includes a copying section that copies an image onto a photosensitive material for copying according to copying conditions, and that corrects the copying conditions based on the density of the copied image, and conveys the photosensitive material for copying on which the image has been copied. a processing section that processes the photosensitive material while processing it, a density measurement section that is placed on the output side of the processing section that measures the density and outputs a signal, and a density measurement section that takes in the output signal of the density measurement section and determines the density of the photosensitive material to be copied that has been processed in the processing section. A copying apparatus comprising: a control means for controlling a density measuring section so as to adjust the level of an output signal of the density measuring section immediately before passing through the measuring section. (3) Passage detection means for detecting the passage of the copy photosensitive material is provided upstream of the density measuring section in the conveying direction, and the control means detects passage of the copy photosensitive material before the passage detection means passes the copy photosensitive material. 3. The copying apparatus according to claim 2, wherein the density measuring section is controlled so as to adjust the level of the output signal of the density measuring section immediately before the time corresponding to the time corresponding to the time elapses. (4) A mark detection means is provided for applying a mark to the photosensitive material for copying in correspondence with the image position and for detecting the presence or absence of the mark at a predetermined position on the conveyance path, and the control means is configured such that the mark detection means detects the mark. 3. The copying apparatus according to claim 2, wherein the density measuring section is controlled so as to adjust the level of the output signal of the density measuring section based on the timing at which the presence is detected. (5) A detection means for detecting the passage of the photosensitive material to be copied is disposed between the processing section and the density measurement section, and the control means controls the density measurement section when the detection means detects the passage of the photosensitive material for copying. 3. The copying apparatus according to claim 2, wherein the density measuring section is controlled to adjust the level of the output signal.