JPH028289Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an automatic developing apparatus having a drying process for processing objects.

[Prior art]

Conventional automatic developing devices that have a drying process for the processed material generally dry the processed material by blowing air heated by a drying heater onto the processed material using a drying fan. The drying temperature is controlled by detecting the temperature of the heated air blown out by a temperature sensor placed on the blowing side of the drying fan, and opening and closing a switch of the drying heater to maintain the appropriate temperature of the heated air.

However, if the temperature sensor is located on the blowing side of the drying fan as described above, when the workpiece is processed continuously, there will be a difference in the drying temperature between the start and end of the process. Differences occur in the drying state of the product, and even if the product is properly dried at the beginning, the drying temperature drops below the appropriate range at the end, causing uneven drying and poor drying.

In addition, the degree of change in drying temperature varies depending on the processing type of the processed material, such as intermittent processing and continuous processing, making it difficult to set an appropriate drying temperature depending on the processing type, and ensuring good drying processing at all times. It was difficult to achieve.

[Purpose of invention]

This invention was devised against the above background, and by controlling the drying temperature appropriately,
It is an object of the present invention to provide an automatic developing device that can easily set an appropriate drying temperature even when the processing types of objects to be processed are different, and can always achieve good drying processing.

[Structure of the idea]

In the present invention to achieve the above object, a plurality of frames are provided to surround the rollers arranged in the drying section, and each of the frames has an air outlet and an air suction port, and is heated to the drying section. a fan means for feeding air into the frame, the fan means having a number of air blowing ducts and an air suction duct equal to the number of air blowing ports and air suction ports of the frame, respectively; The air outlet and the air outlet duct are coupled together, and the air inlet and the air intake duct are coupled to allow heated air to flow in and circulate within the frame, and a temperature sensor is disposed within the air intake duct. It is characterized in that the temperature inside the frame is controlled.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

The automatic developing device 1 includes a developer tank 2 for developing the object A, a fixer tank 3 for fixing, a washing tank 4 for washing, and a drying section 5 for drying. The processing object A introduced through the intake port 6 is sequentially conveyed to the developer tank 2, fixer tank 3, washing tank 4, and drying section 5 through the above-mentioned processing steps. A series of conveyance devices 7 each having a large number of conveyance rollers 7a that are driven are disposed, and at the end of the conveyance device 7 below the drying section 5, the workpiece A that has passed through all the processing steps is transferred to the device. A take-out port 8 for taking out the product is open.

Further, the drying section 5 has an appropriate number of frames 5a that surround the conveying rollers 7a arranged in large numbers in the drying section 5, and a suitable number of frames 5a are arranged at appropriate intervals. The heated air is transferred to the frame 5a.
A drying fan 9 for blowing and circulating air is provided inside the drying fan 9, and a blowing duct 10 communicates between the blowing portion 9a of the drying fan 9 and the blowing ports 5b of each frame 5a, and the blowing port 5c of each frame 5a and the suction portion 9b of the drying fan 9 are communicated with each other by a blowing duct 11, forming a circulation path for heated air.

In the suction duct 11 communicating with the suction portion 9b of the drying fan 9, there is provided a temperature sensor 1 such as a thermistor for controlling the drying temperature in the frame 5a.
2 is arranged, and this temperature sensor 12 and the suction part 9
It is detected whether or not heating of the recirculating air by the drying heater 13 provided between b is necessary or unnecessary.

Note that 5d is an exhaust port for discharging a part of the air used in the drying process, and 11a is an air supply port for replenishing fresh air into the suction duct 11.

Next, the operation of this embodiment configured as described above will be explained.

A workpiece A to be processed, such as a long film, taken into the automatic developing device 1 through the intake port 6 is supported by a transport roller 7a of a transport device 7 and transported one by one, and various processing steps are performed. That is, first, a developing process is performed in the developer tank 2, then a fixing process is performed in the fixer tank 3, a water washing process is performed in the washing tank 4, and finally the drying part 5 is transported. While passing through the frame 5a, it is dried by heated air blown out from the drying fan 9 through the blow-off duct 10, and taken out from the outlet 8.

On the other hand, the heated air blown into the frame 5a of the drying section 5 and used for the drying process of the object to be processed A, which is tinged with moisture and whose temperature has decreased, is partially transferred to the exhaust port 5d.
After being discharged from the frame body 5a, it is introduced into the suction duct 11 from the suction port 5c of the frame body 5a.

The suction port 5 in the suction duct 11
A temperature sensor 12 provided near c measures the temperature of the heated air introduced into the suction duct 11 after being used for the drying process.
detects the drying temperature inside the frame 5a, and when the drying temperature inside the frame 5a falls below an appropriate range, notifies the need for heating, and uses the drying heater 13 disposed downstream of the temperature sensor 12 to The recirculating air together with the air supplied through the intake port 11a is heated.

The heated reflux air is sucked into the drying fan 9 from the suction part 9b, passes through the blow-off duct 10 from the blow-off part 9a, and is blown out again from the blow-off port 5a into the frame 5a of the drying part 5. Maintain a stable drying temperature and always perform a good drying process.

[Effect of idea]

As described above, the present invention provides a plurality of frames surrounding the rollers arranged in the drying section, each of which has an air outlet and an air suction port, and
A fan means for feeding heated air into the frame is provided in the drying section, and the fan means has air blowing ducts and air suction in numbers equal to the number of air blowing ports and air suction ports of the frame, respectively. ducts, the air outlet and the air outlet duct are coupled together, and the air inlet and the air inlet duct are coupled together to allow heated air to flow in and circulate within the frame, and the air inlet duct is connected to the air inlet duct. A temperature sensor is installed inside the frame to control the temperature inside the frame, so the temperature of the heated air after being blown onto the workpiece in the drying section is detected, and the drying heater is activated as necessary. The inside of the drying section can be heated and stably maintained at an appropriate temperature, and even if the processing type of the processed material is different, such as continuous processing or intermittent processing, good drying processing can always be achieved, and uneven drying and drying can be avoided. The occurrence of defects, etc. can be prevented.

In particular, the present invention allows dry air to flow in and circulate through each frame surrounding the rollers to dry the processed material, so it is possible to achieve a good dry finish by maintaining the temperature inside the frame stably. can.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of an automatic developing device according to the present invention. Figure 1 is a cross-sectional front view, and Figure 2 is a schematic diagram showing a heated air circulation system in the drying section. be. 1 is an automatic developing device, 5 is a drying section, 5a is a frame body,
7 is a conveying device, 7a is a conveying roller, 9 is a drying fan, 10 is a blowing duct, 11 is a suction duct,
12 is a temperature sensor, 13 is a drying heater, and A is a processed object.

Claims (1)

[Scope of utility model registration request] A plurality of frames surrounding the rollers arranged in the drying section are provided, each of the frames having an air outlet and an air suction port, and fan means for feeding heated air into the drying section. provided, the fan means has a number of air blowing ducts and an air suction duct equal in number to the number of air blowing ports and air suction ports of the frame, respectively, and the air blowing ports and the air blowing duct are connected; and coupling the air suction port and the air suction duct,
Inflowing and circulating heated air into the frame,
A temperature sensor is disposed within the air suction duct,
An automatic developing device characterized in that the temperature inside the frame is controlled.