JPH01214857A - Photosensitive material processing device - Google Patents

Abstract

PURPOSE:To prevent hot blast in a drying part from being sent to a development processing part by forming an aperture in the vicinity of the communicative holes between the drying part and the development processing part and sucking dry wind through this aperture. CONSTITUTION:A sensitive material P such as a photographic paper on which an image is printed is sent to a development processing part 12 and successively processed in developing tanks 16 and 18, a fixing tank 22, and a water washing tank 24 and sent to a drying part 14. In the drying part 14, the sensitive material P is wound around the outside peripheral surface of a winding drum 38 and moved toward rolls 42 and 44, and hot blast is blown from a slit 52 to a hot blast duct 46 to dry the material P. Hot blast is circulated in the direction of an arrow A and sucked through a suction hole 56A of a duct 56 and sent to a fan 48. Thus, air in the processing part 12 is partially sucked through a communicative holes 28 in the vicinity of the suction hole 56A and hot blast in the drying part 14 does not flow to the processing part 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photosensitive material processing apparatus for developing a photosensitive material in a developing processing section and then drying it in a drying section.

[Background technology]

After the image has been exposed, the photosensitive material such as photographic paper is developed, fixed, and washed in a developing device, and then dried in a drying section to become a product.

In the drying section, warm air is supplied to the photosensitive material passing therethrough by a fan driven by a motor. Therefore, the internal pressure of the drying section is higher than that of the developing section, causing warm air from the drying section to flow into the developing section from the opening connecting the developing section and the drying section. In this case, the portion of the transport roller exposed from the processing liquid such as the developer dries, causing chemicals to precipitate or the concentration of the processing liquid to change.

In consideration of the above-mentioned fact, the present invention aims to provide a photosensitive material processing apparatus in which hot air from a drying section is not sent to a developing section.

[Summary and operation of the invention]

The present invention relates to a photosensitive material processing apparatus in which a photosensitive material after image exposure is developed in a development processing section and then dried in a drying section, wherein a circulation path for circulating drying air is formed in the drying section. A part of the passage is characterized in that it serves as a suction port to the circulation passage with an opening formed near a communication opening between the development processing section and the drying section.

Therefore, in the present invention, drying air is circulated in the drying section to dry the photosensitive material, and air from the developing processing section is sucked through a suction port provided in a part of this circulation path. Hot air does not reach the development processing section.

[Embodiments of the invention]

The drawing shows a photosensitive material processing apparatus 10 to which the present invention is applied.

In this photosensitive material processing apparatus 10, a development processing section 12 and a drying section 14 are provided side by side, and after the photosensitive material P is developed, it is dried and taken out.

The development processing section 12 is provided with a developing tank 16, 18, a fixing tank 22, and a washing tank 24, each of which is filled with a developing solution, a fixing solution, and washing water. Conveyance rollers (not shown) are arranged in each of these processing tanks so that the photosensitive materials P are sequentially inserted and then taken out and sent to the next process. A communication hole 28 through which the photosensitive material P passes is formed in the partition wall 26 formed between the development processing section 12 and the drying section 14, and the photosensitive material P is transferred from the development processing section 12 to the drying section 14.
It is designed to allow passage to.

A transport roller 32 is installed in the drying section 14 near this communication port 28.
A pair of rollers are provided to sandwich the photosensitive material P and then send it out to a pair of conveyance rollers 34. A guide plate 36 is provided between the conveyance rollers 32 and 34 to change the direction of the photosensitive material P fed out in the horizontal direction vertically downward.

A winding drum 38 is disposed below the conveyance roller 34 , and after winding the photosensitive material P about half a circumference, it is reversed and directed upward, and sent to the conveyance roller 42 . Furthermore, a pair of conveyance rollers 44 are provided above the conveyance roller 42 to take out the dried photosensitive material P above the drying section 14.

A hot air duct 46 is arranged around the outer periphery of the winding drum 38,
Warm air from the fan 48 is blown onto the surface of the photosensitive material P through a plurality of slits 52. For this purpose, a heater 54 is arranged in the hot air duct 46.

One end of a circulation duct 56 is communicated with the fan 48 . A portion of the circulation duct 56 is formed vertically, and its upper end serves as a suction port 56A. This suction port 56A is open facing below the communication port 28,
The hot air blown from the hot air duct 46 to the photosensitive material P is sucked in the six directions of the arrows and sent back to the fan 48.

Further, an intake port 58 for taking in outside air is formed in a part of the circulation duct 56.

A duct 62 is formed horizontally above the drying section 14, and an opening 62A formed at one end communicates with the development processing section 12, and an opening 62B formed at the other end is open to the outside. In addition, a fan 64 is installed in the middle of this duct 62.
is provided and rotates together with the fan 48 under the driving force of a motor (not shown) to discharge air from the developing processing section 12 to the outside.

The axis of this fan 64 is slightly inclined from the horizontal direction, and the hot air discharged from the hot air duct 46, a part of which is sucked into the suction port 56A in the direction of the arrow 6, and the remaining hot air are transferred to the duct. The liquid is sucked through an opening 62C formed in a part of the tube 62 and sent to the opening 62B.

Next, the operation of this embodiment will be explained.

The photosensitive material P on which an image has been printed by a printer (not shown) is sent to the development processing section 12, and is transported to the development tank 16.1.
8. After being sequentially developed in the fixing tank 22 and the washing tank 24, it is sent to the drying section 14.

In the drying section 14, the photosensitive material P held between the conveyance rollers 32 and 34 is wound around the outer periphery of the winding drum 38 and moved in the direction of the conveyance rollers 42 and 44. Warm air is blown out from the slits 52 of 46 for drying. This hot air circulates in the six directions of the arrows through the duct 5.
The air is sucked through the suction port 56A of No. 6 and sent to the fan 48. Therefore, part of the atmospheric air in the developing processing section 12 is sucked through the communication port 28 near the suction port 56A, and the warm air from the drying section 14 does not reach the developing processing section 12 through the communication port 28. Therefore, there is no problem caused by an increase in the ambient temperature of the development processing section 12.

The remaining warm air that is not sucked into the suction port 56A near the communication port 28 passes through the opening 62C and is discharged from the opening 62B of the duct 62 together with the developing processing unit air from the opening 62A, so that the hot air does not flow into the developing processing unit 12. ensuring prevention.

In the above embodiment, the hot air is supplied while the photosensitive material P is wound around the winding drum in the drying section. It is also possible to have a structure in which the drying process is performed by blowing hot air during the drying process.

〔Effect of the invention〕

As explained above, in the present invention, a part of the circulation path of the drying section is opened near the communication hole between the drying section and the developing processing section to form a suction hole, so that hot air from the drying section does not reach the developing processing section. It has no excellent effect.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing a photosensitive material processing apparatus to which the present invention is applied. P...Photosensitive material, 10...Photosensitive material processing device, 12...Development processing section, 14...Drying section, 28...Communication port, 48...Fan, 56...Circulation duct , 56A... Suction port.

Claims (1)

[Claims] (1) A photosensitive material processing apparatus in which a photosensitive material after image exposure is developed in a development processing section and then dried in a drying section, wherein a circulation path for circulating drying air is formed in the drying section, and this circulation path A part of the photosensitive material processing apparatus is characterized in that a part thereof is a suction port to the circulation path having an opening formed near a communication port between the development processing section and the drying section.