SU918742A1 - Dryer for web-type photomaterials - Google Patents

Description

(54) DRYING ROLLER DEVICE

one

The invention relates to a drying technique, namely, to devices for photochemical processing and drying of roll photographic materials with a variable speed of their transportation.

The closest to the present invention is a device for drying roll photographic materials, a housing body and stirring in it fixed and movable air distribution ducts with a perforated working surface, provided with guides and rollers for transporting the dried photographic material 1.

A disadvantage of the known device is the complexity of the design.

The purpose of the invention is to simplify the design while at the same time ensuring control of the transport speed of the photometallic.

This goal is achieved by the fact that movable ducts are made in the form of segments installed rotatably through 90 °, while the fixed ones are located coaxially with movable ducts around them with the formation of between the gap ducts in which the scissors are installed

Vyushie perforation in areas free from photographic material.

FIG. 1 shows a drying device in the initial position of charging photographic material, a cross section; in fig. 2 is a cross-section of a drying device in which the movable boxes are rotated to the extreme position; in fig. 3 is a general section A-A in FIG. one.

The drying device for rolled photographic materials consists of a housing 1 in which air from a fan (not shown) heated by heating elements 2 enters fixed air distribution ducts 3 and 4 simultaneously in coaxially arranged moving air distribution ducts 5 and 6, covered by fixed ducts. Movable boxes 5 and 6, made in the form of segments, are rotatably mounted in the housing 1 and connected via a gear 7 to a driving tracking mechanism (not shown). The fixed boxes 3 and 4 have perforation zones 8 and 9, and the movable boxes 5 and 6 have perforation zones 10-13 for supplying heated air to the transported photographic material, with the perforation zones alternating between fixed and moving boxes.

On the fixed boxes 3 and 4, the guide rollers 14 are mounted and the flaps 15 and 16 are fixed, and on the moving boxes 5 and 6 the guide rollers 17 are mounted and the flaps 18 and 19 are fixed.

Sensory device works as follows.

In the initial state, the movable air distribution ducts 5 and 6 occupy the position (Fig. 1) at which the roll-up photo material is charged. When this flap 15, 16, 18, 19 movable 5, 6 and fixed 3.4 boxes overlap the flow of heated air through the corresponding zones of the perforations of the boxes. Air is supplied through perforation zones 10 and 11 to both surfaces of the moving photographic material.

When the transportation speed of the photographic material changes and, consequently, the need to change the photographic material path in the actual device to maintain constant drying times, the moving air distribution ducts 5 and 6 are rotated and, with the help of the guide rollers 17 installed in them, loop the photographic material. During this movement, together with the movable boxes, the plates 18, 19 fixed on them turn, opening the perforations 8, 9 of the fixed boxes 3, 4. In addition, the zones 12, 13 of the perforations of the movable boxes 5, 6 open, overlapped with fixed plates 15 , 16 fixed boxes 3, 4.

In such a movement in any position, the air is supplied only on

The sides of the photographic material located opposite the open perforation zones.

Such an embodiment of the substantive device is characterized by a considerable simplicity of construction, while at the same time controlling the transport speed of the photographic material and supplying the essential air while maintaining the constant time of the substance at a variable speed.

As a result, in this device, the control and viewing of the processed photomaterial is ensured with a constant delay value at a variable transport speed.

Claims (1)

Invention Formula A sniper device for rolled photographic materials comprising a housing and stationary and movable air distribution ducts with a perforated working surface placed in it, equipped with guide rollers for transporting the dried photographic material, in order to simplify the design while simultaneously providing for adjusting the transport speed of the photographic material movable boxes are made in the form of segments that can be rotated by 90 °, while the fixed boxes are located Clearly with movable ducts, around them with the formation between the ducts of the gap, in which the plates are installed, overlapping the perforation in areas free from photographic material. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 613180, cl. F26 13/08, 1975. /  0 fug. 7