JPH0636093B2 - Photographic developing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic printing and developing apparatus in which an image is printed on a photosensitive material supplied from a photosensitive material supply section in a printing section and developed in a developing section.

2. Description of the Related Art There is a photographic printing developing apparatus in which a printing unit for printing an image of a film on a printing paper and a developing unit for developing a printing paper on which an image is printed are connected.

In this type of photographic printing developing apparatus, a printing paper reservoir portion is provided between the printing portion and the developing portion to absorb the difference in processing speed between the respective portions, that is, the difference in transport speed of the printing paper. The photographic paper reservoir portion is provided with guide rollers located on the printing portion side and the developing portion side, respectively, and the photographic paper intermediate portion is bent in a loop between the rollers. As a result, the difference in printing paper transport speed between the printing unit and the developing unit is absorbed, and the printing paper can be transported smoothly.

[Problems to be Solved by the Invention] Since the photographic printing paper has hygroscopicity, the photographic printing paper absorbs moisture and guide rollers when the atmospheric conditions of the photographic printing paper reservoir are excessively high. There is a problem that photographic paper may be unnecessarily attached to the guide roller due to dew condensation on the guide roller, and may be wound or bent.
On the other hand, when the atmospheric conditions of the printing paper reservoir are excessively low, the printing paper becomes too dry and static electricity is generated, and the sparks caused by the spontaneous discharge of the electric charge reaching a certain potential make the printing paper unnecessary. It is exposed or by noise radio waves,
There is also a problem that it adversely affects other auxiliary equipment arranged in the photoprinting and developing device, particularly the microcomputer or its sensor, causing malfunction.

In consideration of the above facts, the present invention, when conveying the photographic paper after the printing process in the printing section to the developing section, the atmospheric conditions are optimized to the conveyance conditions of the photographic paper, and the photographic paper to be conveyed is An object of the present invention is to obtain a photographic printing and developing apparatus which can be stably conveyed without being bent or wound unnecessarily and generating static electricity.

[Means for Solving Problems] A photographic printing developing apparatus according to the present invention is a photographic printing developing apparatus in which an image of a photosensitive material supplied from a photosensitive material supply section is printed in the printing section and developed in the developing section. There is provided a blower arranged between the photosensitive material supply section and the developing section and capable of introducing outside air, and a control means for stopping the blower when a set condition is reached.

[Operation] In the photographic printing / developing apparatus having the above structure, the air is introduced between the photosensitive material supplying section and the developing section by the blower. For this reason, when the photographic paper tends to get damp due to high atmospheric conditions between the photosensitive material supply section and the developing section, such as in the summer, the outside air is introduced and fed to the photographic paper to supply the photosensitive material supply section. The atmospheric condition between the developing section and the developing section can be a humidity suitable for carrying the printing paper.

On the other hand, when the outside air is low in humidity and the photographic paper is likely to dry like winter, that is, when the atmospheric condition between the photosensitive material supply unit and the developing unit becomes less than or equal to the set humidity, the blower is stopped by the control means, The introduction of outside air is stopped, and the appropriately moist air naturally flows in from the developing section. Therefore, the photographic paper will not be too dry.

In this way, the atmospheric conditions between the photosensitive material supplying section and the developing section can be set to a humidity suitable for the transportation of the printing paper throughout the four seasons, and the printing paper can be stably maintained without adversely affecting the transportation of the printing paper. Be transported.

[Embodiment] FIG. 1 is a schematic sectional view of a photographic printing and developing apparatus 10 according to the present invention.

The photographic printing developing device 10 is composed of a printing unit 12 and a developing unit 14. The printing section 12 is provided with a photographic paper magazine 16 as a photosensitive material supply section.
8 is rolled up and stored. The photographic paper 18 drawn out from the photographic paper magazine 16 is sequentially guided and conveyed to the printing section 20. An optical system 22 and a light source 24 for printing a negative film image on the photographic printing paper 18 are arranged in the printing section 20. In this case, the photographic printing paper 18 is conveyed while being alternately moved and stopped in accordance with the printing process performed for each image frame.

The printing paper 18 after the printing process is sent to the reservoir unit 26,
Further, after passing through the reservoir section 26, it is sent to the developing section 14.

Guide rollers 34 and 36 located on the printing section 12 side and the developing section 14 side are arranged in the reservoir section 26, and the intermediate portion of the photographic printing paper 18 is bent in a loop between the rollers. As a result, the difference in printing paper transport speed between the printing unit 12 and the developing unit 14 is absorbed, and the printing paper can be transported smoothly.

The developing section 14 is provided with a developing tank 27, a bleach-fixing tank 30 and a water washing tank 32, each of which is a processing bath filled with a processing liquid and is adapted to develop the photographic paper 18 after exposure. There is.

A drying chamber 38 is disposed on the side of the washing tank 32, and the photographic printing paper 18 after development is dried in the drying chamber 38 and then taken out through the cutter unit 40.

A blower 42 is arranged above the reservoir portion 26 so that the outside air can be introduced into the reservoir portion 26 and the print portion 20. A humidity sensor 44 is arranged near the blower 42 so that the humidity of the outside air can be detected. The humidity sensor 44 is connected to a control circuit (not shown), and operates when the humidity becomes lower than a set humidity to output a detection signal thereof. Further, the control circuit stops the rotation of the blower 42 based on the detection signal from the humidity sensor 44.

Next, the operation of this embodiment will be described.

The printing paper 18 on which the image is printed in the printing unit 20 of the printing unit 12 is sent from the leading end to the light source 24 through the reservoir unit 26.

Generally, it is desirable to introduce outside air into the photographic printing paper conveying system in the reservoir section 26 or the like in the photographic printing / developing apparatus even under high humidity environmental conditions, but if there is an appropriate air flow, the photographic printing paper acts as a guide roller. Unnecessarily difficult to attach.

Here, the blower 42 uses the reservoir unit 2 as in the summer, for example.
When the atmospheric condition in 6 is high humidity, it operates and the outside air is introduced into the reservoir section 26 and the printing section 20 and fed to the photographic printing paper 18. For this reason, the photographic paper 18 absorbs excessive water and is prevented from unnecessarily adhering to the guide rollers 34 and 36 and winding or bending.

On the other hand, when the outside air condition is low and the atmosphere condition inside the reservoir portion 26 is also low like in the winter season, the humidity sensor 44 detects this and the blower 42 is stopped based on the detection signal to introduce the outside air. Stops and the appropriately moist air naturally flows in from the developing section. Therefore, the photographic printing paper 18 does not become excessively dry, static electricity is generated during transportation, the photographic printing paper is unnecessarily exposed by sparks, and other auxiliary equipment disposed in the photoprinting / developing apparatus due to noise radio waves. In particular, it does not adversely affect the microcomputer or its sensor.

The photographic printing paper 18 that has passed through the reservoir section 26 is sent to the developing section 14, is subjected to development processing in the processing tanks of the developing tank 28, the bleach-fixing tank 30, and the washing tank 32, and is further dried in the drying chamber 38, and then the cutter section 40. It is cut and taken out.

In the present embodiment, the humidity sensor 44 detects the humidity of the outside air and outputs the stop signal of the blower 42 when the humidity falls below a predetermined humidity. Place it directly on the reservoir 2
The humidity in 6 may be detected, and the blower 42 may be stopped when the atmospheric condition in the reservoir 26 becomes equal to or lower than a predetermined humidity.

Further, generally, the atmospheric condition in the reservoir portion 26 becomes high humidity when the temperature is high such as in summer, and the atmospheric condition in the reservoir portion 26 becomes low humidity when the temperature is low in winter. Therefore, a temperature sensor capable of detecting the outside air temperature may be provided in place of the temperature sensor 44 in the above-described embodiment, and the blower 42 may be stopped when the outside air falls below a predetermined temperature. Alternatively, the amount of charge may be detected by an electrostatic sensor and similarly controlled when the amount of charge is equal to or larger than a predetermined amount.

Further, although the blower 42 is automatically stopped in accordance with the outside air condition or the atmospheric condition in the reservoir section 26 in the above-described embodiment, the present invention is not limited to this, and a manual switch capable of stopping the blower 42 is provided to be manually operated. The blower 42 may be stopped by an operation. Further, in order to control to the optimum humidity, the rotation speed of the blower may be changed or intermittent operation may be performed.

[Effects of the Invention] As described above, the photographic printing and developing apparatus according to the present invention is a photographic printing and developing apparatus in which an image of the photosensitive material supplied from the photosensitive material supplying section is printed in the printing section and developed in the developing section. The printing unit is provided with a blower arranged between the photosensitive material supply unit and the developing unit and capable of introducing outside air, and a control means for stopping the blower when a set condition is reached. At the time of transporting the photographic printing paper after the printing processing in the developing section, the photo printing and developing apparatus does not need to be provided with a special device such as a humidifier or a dehumidifier, and simply and inexpensively.
The atmospheric conditions between the photosensitive material supply section and the developing section can be optimized to the conveyance conditions of the photographic paper, and the conveyed photographic paper may be unnecessarily wrapped around, bent, or generate static electricity. It has the effect that it can be stably transported without any problems.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a photographic printing and developing apparatus according to the present invention. 10 ... Photographic developing device, 12 ... Printing part, 14 ... Developing part, 18 ... Printing paper, 26 ... Reservoir part, 42 ... Blower, 44 ... Humidity sensor.

Claims (3)

[Claims] 1. A photographic printing developing apparatus in which an image is printed on a photosensitive material supplied from a photosensitive material supplying section in a printing section and is developed in a developing section, wherein the photosensitive printing apparatus is provided between the photosensitive material supplying section and the developing section. A blower that is arranged and can introduce outside air, and a control means that stops the blower when a set condition is reached,
A photoprinting / developing device comprising: 2. The control means includes a humidity sensor capable of detecting the humidity between the photosensitive material supplying section and the developing section or the outside air, and stops the blower when the humidity sensor detects a predetermined humidity. The photographic printing and developing device according to claim 1. 3. The control means includes a temperature sensor capable of detecting the temperature of the outside air, and stops the blower when the temperature sensor detects a predetermined temperature.
Photographic printing and developing device described in the item.