JPS62232655A - Drying device for printing plate - Google Patents

Abstract

PURPOSE:To obtain a printing plate use drying device being advantageous heat-economically, by providing a circulating wind use air suction port on a side plate of a drying box, drying uniformly both the surface and the rear side of a printing plate, minimizing an outflow of a hot air to the outside of the drying box, and also, raising the drying efficiency without deteriorating the environment of an automatic developing machine chamber. CONSTITUTION:Air which is fed out of blower 7 is controlled as to its temperature by a heater 8, becomes a hot air of 60-80 deg.C, and led to upper and lower slit blow-off ports 9a, 9b. As for a method for suspending a duct 9 to a drying box, it is executed by coupling an end part 9c and 9d of the duct 9 into a hole which has been provided on side plates 3a, 3b. On the side plate 3b (the side plate of an outlet side of a drying air), many suction ports 13 are provided, and a suction of a drying circulating air is executed. The duct consist of a cylindrical shape of about a pentagon, one line thereof is opened and forms the slit blow-off ports 9a, 9b, and a drying air which has been led in from the end 9c of the duct 9 is blown out to the PS plate surface from the slit blow-off ports 9a, 9b, and dries a gum liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drying apparatus for a photolithographic printing plate (for PS plate). The drying device ff is particularly suitable for gumming cloth machines. [Prior art] Conventionally, automatic developing machines and gumming machines for photosensitive planographic printing plates have been used to dry g-light materials to be handled horizontally. Due to the handling of
The problem is that the installation space becomes large, and efforts are being made to save space.

Efforts have been made to minimize the installation space for these devices.1 For example, drying devices used in gum coating machines for 1g likelihood lithographic printing plates! In II, the circulating air inlet is located on the bottom plate of the drying box, and will be explained in detail with reference to Figure 90. , Fig. 2 is a diagram showing an example of a drying device of a conventional printing plate gum coating machine.
l is its front view, (bl) is a B-8 sectional view of 1 (al). 1) It is sandwiched between the flower-shaped rollers 12 and conveyed through the drying box 1 with one point of contact. During this time, the slit outlet 9a of the duct 9,
Drying is carried out by drying air (f! 1160 to 80°C) blown out from QbF, and finally the mole l->(finished at 7-ra 11 and exit diaphragm 4.Ca of drying chamber 1) is dried. The process ends when it is discharged as a printing plate.

At this time, in order to circulate and use the drying air, the air blower 7 sucks the drying air used for drying the S-light material through the air suction port 13 installed on the bottom plate 2 of the drying box 1 as circulating air. , 7FI] through the heater 8), and then the upper slit outlet 9a via a duct passing through one side plate 3a of the drying box.
The photosensitive material is blown onto the thorny surface of the photosensitive material from the lower slit outlet 9...ba-, and dried.

Hot air is supplied through the upper and lower slit outlets 9a and 9b.
Is it sprayed onto the plate and serves as a drying agent? Eventually, some of the fresh air that enters the drying box 1 will be sucked into the blower 7 through the suction port 13 provided on the bottom plate 2 and will be reused.

[The problem that the invention attempts to solve]

However, in the conventional drying device, when the PS plate 10 enters the drying box 1 and begins drying, the drying air blown out from the lower slit outlet 9b plays the role of drying the gum liquid on the plate 28. 7'j If the air is immediately sucked into the air blower 7 from the suction hole 13 provided on the bottom plate 2 of the drying box and used for circulation, on the other hand, the electric heated air blown out from the upper slit air outlet 9a is
After the gum liquid on the S plate 10 has completed its role of drying, it cannot be sucked into the suction port 13 immediately and flows laterally along the top surface of the PS plate, and the hot air that collects is connected to the edge of the 28 plate 10. Narrow space between sides 13a and 3b of drying box l? Through the suction port 13ζ: must be sucked in. As a result, the hot air blown out from the upper slit outlet 9a rather flows out of the drying box from the inlet partition plate 5 or outlet partition plate 4 of the drying box Q), which has less flow resistance. When such a situation occurs, air from outside the drying box will flow into the lower side of the P8 plate, contrary to the upper side.As a result, the upper surface of the printing plate and Uneven drying due to differences in drying speed q on the lower surface,
In addition, the drying air thermal efficiency decreases due to the large amount of fresh air, which is not desirable. .

In addition, on the 28th edition, when the gum is applied, the gum liquid flows into the drying box and enters the blower 7 through the suction port 13 provided on the bottom plate 2 of the drying box.

If it dries and solidifies, it may cause an accident in which the blower motor seizes up due to overload.

The present invention solves the above-mentioned drawbacks, uniformly dries both the front and back sides of the printing plate, minimizes the flow of hot air outside the drying box, does not deteriorate the environment of the automatic processor room, and at the same time improves drying efficiency. Printing plate drying device i1 that increases thermoeconomic page efficiency? It is about providing.

[A point of contention? [Means and effects for solving the problem] Is the present invention a g-photolithographic printing plate? In a device that dries by blowing out drying air, is there an outlet for blowing out the drying air into the drying box? Is there an air inlet for circulating air on the side plate of the drying plate where the duct passes through? This is a printing plate drying device characterized by the following:

〔Example〕

Embodiment 5 of the present invention/This will be explained with reference to FIG. 1. Figure 1 shows a drying device of a gum coating machine for printing plates, which is an embodiment of the present invention. It is an AA curved view of.

The air that is emitted from the blower 7) is heated to a temperature of 9? by the heater 8. Duct 9 with regulated hot air of 60-80℃
Depending on the lower slit outlet 9a.

Guided by 9b. The method of suspending the duct 9 to the drying box is to insert the
d? ! /C.1 is performed for fitting.

Side plate 3b (dry air outlet side plate) (second is a large number of suction ports 13
There are 1. 12.C&) Intake of dry circulating air is performed.

The duct 9 has a sharp, approximately pentagonal cylindrical shape as shown in FIG. The drying air introduced from the slit outlet 9Jl (9b) is blown onto the PS plate surface to dry the gum liquid.

By using this drying device, drying air from the lower slit outlets 9a and 9b (6) is suctioned from the suction port 13 provided on the side plate 3b and used for circulation.
The front and back screens will dry evenly.

〔Effect of the invention〕

By providing the circulating air air suction port of the present invention on the side plate of the drying shaft, the front and back surfaces of the printing plate can be dried evenly.13.
It becomes possible to minimize the outflow of hot air outside the drying box, and as a result, the working conditions of the automatic #J and image machine room become normal, increasing the thermal efficiency of the drying air and reducing the heating cost (/I). Savings t: Contributed.Also, the gum liquid flowed into the drying box.

Accidents such as motor breakdown caused by the solidification of this material are also avoided.In spite of the fact that the present invention is implemented, the external dimensions of the gum cloth machine are significantly enlarged. (can be installed t0

[Brief explanation of drawings]

(a) is a front view of the drying device of a gumming coating machine for printing plates, which is an embodiment of the present invention; (bl is A in (a))
- AIFI side view, Figure @2 is an example of a drying device of a gum coating machine of a conventional printing plate automatic developing machine (Al is a front view, (b) is a BB sectional view of (a). The figure is a perspective view of a duct used in the drying device 1 of the present invention. 1... Drying path, 2... Bottom plate, 3a, 3b...
side plate. 4... Outlet partition, 5... Inlet partition, 6... Application section. 7...Blower, 8...Heater, 9...Duct. 9a, 9b...slit outlet, 10...P
S version. 11...Morton a-ra, 12...Flower shape a-ra. 13... Suction port, 14... Suction duct. Figure 1 (b)

Claims (1)

[Claims] In an apparatus for drying photosensitive planographic printing plates by blowing out drying air, an air inlet for circulating air is provided in the side plate of the drying box through which a duct provided with an air outlet for blowing the drying air into the drying box passes. A printing plate drying device characterized by being provided with: