JPH071632Y2 - Dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a drying device for drying a sheet-shaped wet electrophotographic photosensitive material.

(Technical Background and Problems to be Solved) FIG. 2 is a cross-sectional structural view showing the outline of a conventionally used camera-type electrophotographic plate making machine 2A, and in FIG. Photographing light emitted from a light source (not shown) to the original is reflected by the surface of the original, reflected by the mirror 21, and condensed by the lens 22. The collected photographing light is supplied from the paper feeding unit 23 by a conveying unit (not shown), and the electrophotographic photosensitive member (hereinafter,
It forms an image on P (referred to as master paper). The photographed master paper P is conveyed to the developing section 24 by the above-mentioned conveying means, developed, fixed in the fixing section 25, hydrophilized in the pre-etching section 26, dried in the drying section 27, and then taken out 28. It is supposed to be released from.

FIG. 3 is a sectional structural view showing an example of a drying device 3A used in the drying unit 27 of the above-mentioned camera type electrophotographic plate making machine 2A, which is disposed near the entrance of the drying unit 27 and has a pre-etching unit. The master paper P conveyed from 26 is dried.
The rollers 31A and 31B for taking in the inside of the 27, and the dried master paper P, which is arranged in the vicinity of the outlet of the drying unit 27, is dried.
It has rollers 32A and 32B for carrying out from 27.
Further, the master paper P is disposed between the rollers 31B and 32B and holds the transported master paper P, and the master paper P is disposed between the rollers 31A and 32A above the guide member 33 and transported. And a box-shaped heating means 30 for drying. A heater 34 is provided inside the heating means 30, and a fan 35 is provided above the heater 34.
The master paper P is dried by sucking in the outside air and blowing it to the heater 34 to create hot air, and sending this hot air through the air blow holes 36 provided in the lower part of the heating means 30.

The drying device 3A having such a structure has an advantage that the manufacturing cost is low because the structure is simple, but it is uneconomical because the thermal efficiency is low because it sucks the outside air, and the heater 34
However, there is a drawback in that it is necessary to increase the capacity and lacks safety.

FIG. 4 is a cross-sectional structure diagram showing an example of a drying device 4A that solves the above-mentioned drawbacks, and the same portions described in FIG.

Slits 41A and 41B for letting in and out the conveyed master paper P are provided on the side surface of the box-shaped heating means 40 of the drying device 4A. Then, a guide member 33 for holding the master paper P conveyed through the slit 41A in the heating means 40, and hot air for drying the conveyed master paper P arranged above the guide member 33 are blown. It has an outlet duct 42 and a temperature sensor 43 for measuring the temperature inside the heating means 40. Further, from the hole 44 formed in the bottom portion of the heating means 40 below the guide member 33, the heating means 40 is
A fan 45 for sucking air in the inside, a pipe 46 for sending the air blown from the fan 45 to the duct 42, and a pipe arranged in the pipe 46 and converting the air blown from the fan 45 into hot air A heater 47 is provided. This dryer
The operation of 4A will be described. The fan 45 sucks the air in the heating means 40, blows it to the heater 47 to generate hot air, and sends it to the duct 42 through the pipe 46. Then, the hot air is blown out from the hole provided in the lower part of the duct 42 and is blown out from the air blow hole 36, whereby the master paper P is dried and the above-mentioned operation is repeated again. Since this drying device 4A is a so-called circulation type, in order to prevent the temperature inside the heating means 40 from rising excessively, the temperature is detected by the temperature sensor 43 and the heater 47 is used.
To control.

However, the drying device 4A having such a structure has a complicated structure and requires a high wind pressure fan 45 to circulate air, so that the manufacturing cost is high, and the high wind pressure fan 45A is also used.
Had a problem that the blowing noise was loud.

(Purpose of Invention) This invention was made under the circumstances described above.
An object of the present invention is to provide a drying device having a simple structure, low manufacturing cost, low blowing noise, high thermal efficiency, and high safety.

(Means for Solving Problems) The present invention relates to a drying device for drying a sheet-shaped wet electrophotographic photosensitive material, and the above object of the present invention is to provide a heat source for radiating a conveyed sheet material by heat. A reflecting plate that reflects the radiant heat of the heat source to the sheet material, and is arranged to be inclined with respect to the conveying direction of the sheet material, and air is blown to the sheet material at an angle of 30 ° to 40 ° from a vertical line. Blower means, blower holes for dispersing and sending the blower air from the blower member to the conveying surface of the sheet-shaped electrophotographic printing plate material, and circulating air which passes under the reflector and is sucked again by the blower means. The air passage, the heat source, the reflection plate, the air blowing means, the air blowing hole, and the circulation air passage are covered at a predetermined temperature except the front and rear slits for passing the sheet-shaped electrophotographic printing plate material. Set up a box It is achieved by Rukoto.

(Advantage of the Invention) In the drying device according to the present invention, the inclined fan blows air to the heater and the master paper and circulates the air in the heating means, so that a small fan or a small capacity heater can efficiently perform drying. It is possible.

(Embodiment of the Invention) FIG. 1 is a sectional structural view showing an example of the drying apparatus 1A of the present invention in correspondence with FIG. 4, and the same portions described in FIG. The description is omitted.

The fan 11 is arranged obliquely above the guide member 33 in the box-shaped heating means 10 of the drying device 1A, and the guide member 33.
It is arranged in the vicinity of the upper fan 11 and is composed of a heater 12 and a heating unit 14 including a heat reflection plate 13. This dryer
Explaining the operation of 1A, when the air in the heating means 10 is circulated by the fan 11, the air passing in front of the heat reflection plate 13 of the heating section 14 is heat-exchanged to become hot air, which the fan 11 sucks. Then, the master paper P is dried by sending air through the air blowing holes 36, and the master paper P is also dried by radiant heat from the heater 12 and the heat reflecting plate 13. Since this drying device 1A is also a circulation type, in order to prevent the temperature inside the heating means 10 from rising excessively, the temperature sensor 43
The temperature is detected by and the heater 12 is controlled.

It should be noted that the position and the inclination angle of the fan 11 may be arranged so that the air in the heating means 10 is circulated and the air is blown to the heating section 14 and the master paper P.
Diagonally above and set the angle of inclination of the fan 11 axis to 30
It is effective if the angle is set to 40 °. The type of the fan 11 is not particularly limited, but for example, a flow fan can be used to reduce the cost, and a line flow fan can be used to heat the motor.
10 Since it can be placed outside, it is possible to improve the durability of the motor. And when using a flow fan,
It is more effective if a space of 150 mm to 200 mm is provided side by side in the width direction of the master paper P so as to be installed side by side. Further, the heating portion 14 may be disposed in the vicinity of the fan 11 and the heat reflection plate 13 may be oriented in the master paper P direction. The heater 12 and the heat reflection plate 13 may be formed in a line shape in the width direction of the master paper. It is also effective if provided. Further, the mounting position of the temperature sensor 43 can be arbitrary. If the fan 11 and the heating unit 14 described above are provided below the guide member 33, more effective drying can be performed.

(Variations of the Invention) In the above-described embodiments, the case where the master paper is used for the drying unit is described, but the present invention is not limited to the drying unit and may be used for the fixing unit and the like.
Further, although an example in which the invention is applied to a camera type electrophotographic plate making machine is shown, the invention is not limited to the camera type, and the invention can be applied to a console type or the like.

(Effect of the Invention) As described above, according to the drying apparatus of the present invention, since the fan and the heating unit are built in the box-shaped heating means, the thermal efficiency is high, so that the fan is downsized and the manufacturing cost is reduced. In addition, the blowing noise can be reduced, and the capacity of the heater can be reduced to improve safety.

[Brief description of drawings]

FIG. 1 is a sectional structural view showing an example of the drying device of the present invention,
FIG. 2 is a sectional structural view showing an example of a conventional camera type electrophotographic plate making machine, and FIGS. 3 and 4 are sectional structural views showing an example of a conventional drying apparatus, respectively. 1A, 3A, 4A ... Drying device, 10, 30, 40 ... Heating means, 11, 35, 45 ...
Fan, 12, 34, 47 ... Heater, 13 ... Heat reflection plate, 14 ... Heating part, 27 ... Drying part, 31A, 31B, 32A, 32B ... Roller, 33 ... Guide member, 36 ... Blower hole, 41A, 41B ... Slit, 43 ... Temperature sensor.

Claims (1)

[Scope of utility model registration request] 1. A drying device for carrying out drying after a hydrophilic treatment in an electrophotographic plate making apparatus, which comprises electrification-exposure-developing-fixing-hydrophilization-drying an electrophotographic printing plate in a consistent process, wherein a sheet is conveyed. A heat source for radiantly heating the sheet-shaped electrophotographic printing plate material, a reflector for reflecting the radiant heat of the heat source to the sheet-shaped electrophotographic printing plate material, and an inclination with respect to the conveying direction of the sheet-shaped electrophotographic printing plate material And an air blower that blows air at an angle of 30 ° to 40 ° from a vertical line, and a blower hole that blows air from the air blower in a distributed manner to the conveying surface of the sheet-shaped electrophotographic printing plate material. The sheet-shaped electrophotographic printing plate, the circulation air passage that passes under the reflection plate and is again sucked by the air blower, and the heat source, the reflection plate, the air blower, the air blow hole, and the circulation air passage. The front and rear slots for passing the material Drying apparatus is characterized by providing a box kept covered predetermined temperature except Tsu bets.