DE2618285A1 - DEVICE FOR DRY DEVELOPMENT OF LIGHTING MATERIALS IN FILM FILMS OR. PAPER FORM IN SHEET SIZE - Google Patents

Description

PATENT LAWYERS F.W. HEMivifcRICH · GtRD MÜLLER · D. GROSSE · F. POLLMEIER

22 606 yy 22.01.1976

HANS HAUS, 6250 Lirnburg

Device for the dry development of blueprint materials in film-foils or paper form in sheet format

(Addition to patent (patent application P 2047033.1)

The main patent relates to a device for dry development of blueprint materials in film-foils or paper form in sheet format, which are individually in a, with the development chamber filled with vaporous developing agent can be brought in and out, the development chamber having a slot for a vapor-permeable material which surrounds the sheet-shaped material to be traced Has development folder.

Particularly in the development of diazo film material obtained as a template for diverse printing process or for the production of microfilm duplicates increasingly important _s must be created in the developing chamber as constant as possible conditions so that as to the quality of the templates high requirements can be met . The development folder, which is used in the device according to the main patent and is pushed into and out of the development chamber, introduces temperature changes from the outside into the development chamber during each pulling-in and pulling-out process, which interfere with maintaining these conditions and, in special cases, for example relatively low outside temperatures, lead to the formation of condensation water.

The object of the invention is to counter these difficulties and to create a system that is as constant as possible Allow atmosphere in the development chamber. This problem is solved by the fact that in the development

709846 / O0A3

- E 2 -

PATENT LAWYERS F.W. HEMMERICH GERD MÖLLER D. GROSSE F. POLLMEIER

p? f.nf.

ζ 22.O4.197f

h.who

chamber an inner chamber is arranged, whose inner jacket consist of a material that conducts heat well and can be heated by heating elements and against the outer wrinkles of the development chamber are thermally insulated, and that in the inner cap spray nozzles directed against one or more of the inner walls are arranged for the development fl uidity. Isabel the spray nozzles can be connected in a manner known per se to a metering pump that can be operated by motor or by hand and the device can be operated according to the invention that inside the inner chamber by controlling the heating temperature of the heating elements and the amount of through the nozzles against the walls of the inner chamber sprayed developing liquid constantly an unsaturated vapor atmosphere is maintained, for example with a Temperature between 50 and 80 ° C.

With the device according to the invention operated in this way the use of condensed water is practically avoided and can be carried out in a very short time, about 20 to 60 seconds a perfect development of the blueprint materials reach.

-Gl-

$ 09846/0043

PATENT LAWYERS F.W. HEMMERICH GERD MÜLLER D. GROSSE F. POLLMEIER

22 6G6

€ 22.04.1976

h. who

26 13285 -ei-

The invention is explained in more detail with reference to the embodiment shown in the drawing.

In the development chamber denoted by 1 there is an inner chamber 2 arranged. The walls 2a to 2c of these inner chimneys r are heated by heating elements 3 and 4, the in the embodiment are arranged outside on the walls of the inner chamber 2, but they can also be in the Walls can be built in themselves or form an integral part of the walls. The inner chamber is against the real one The development chamber is thermally insulated by insulating plates 10. Against the heated inner surfaces of the walls of the Inner chamber, here 2c, align the mouths of the spray nozzles 5, which can be actuated by hand via the line M here Dosing pump 6 are connected. In place of this metering pump, a motorized and automatic one can also be used controlled pump. The insertion slot 7 for the development folder 8 consists of a horizontal one in the Inner chamber 2 protruding sealing support 9 and a development folder 8 presses against this support, known per se Sealing lip 11. The development folder 8 has a sealing lip against the outer peripheral edge 7a of the filling slot 7 pressable flange 8a. The development folder is also provided with a shoulder at the front edge 8b in the direction of insertion 8c equipped, the movement path of which can be brought into and out of the active position on the development chamber 1 arranged (not shown) lock is. The sealing support 9 and the sealing lip 10 are exchangeable connected to the wall 1b of the developing chamber 1 surrounding the insertion slot 7. When inserted into the inner chamber 2, the development folder 8 slides on between the sealing pad 9 and the rear wall 2d of the inner chamber arranged horizontal grate 12, which the passage

709846 / QQ43

- G 2 -

PATENT LAWYERS F.W. HEMMERICH ■ GERD MÜLLER ■ D. GROSSE · F. POLLMEIER

22 L G 6

* 22.OM.197f ".

the vaporous development ^ volvissipkeit allowed.

-Al-

^ 09846/0043

Le e rs e

it

Claims (1)

PATENT LAWYERS F.W. HEMiViERiCH · GEHD MÜLLER · D. GROSSE · F. POLLMEIER 22 606 22.01.197f h .wer HANS HAUS, 625O Limburg Claims 1. Device for the dry development of blueprint materials in film-foils or paper form in sheet format, characterized in that an inner chamber (2) is arranged in the development chamber (1), the inner walls (2a to 2c) of which are made of a highly thermally conductive heating element ( 3, ¹ O heatable material and are thermally insulated from the outer walls of the developing chamber (1), and that spray nozzles (5) for the developing liquid are arranged in the inner chamber (2) against one or more of the inner walls (2c). 709846/0043 PATENT LAWYERS F.W. HEMMEiilCH · GE3D MCLLER · D. GROSSE · F. POLLMEIER 22 60fi 04/22/1976 h.wer 26 13285 -A2- .. 2. Device according to claim I ₁
characterized, that the spray nozzles (5) in a known manner with a motorized or manually operated metering pump (6) are connected. 3. Device according to claims 1 and / or 2, characterized in that that the insertion slot (7) for the development folder (8) on a horizontal, protruding into the inner chamber (2) Sealing pad (9) and a development folder (8) against this pressing, known elastic sealing lip (H) consists. M. Device according to claim 3, characterized in that the development folder (8) has a sealing against the outer peripheral edge (7a) of the insertion slot (7) can be pressed Has splash (8a). 5. Device according to claims 3 and / or 4, characterized, that the development folder (8) at the front in the direction of insertion Edge (8b) has an attachment (8c), the trajectory of which can be brought into and out of the active position in the area of on the developing chamber (1) arranged barrier () lies. 6. Apparatus according to claim 3j characterized in that the sealing support (9) and the sealing lip JAÜJ are interchangeable with the one enclosing the insertion slot (7) 709846/0043 -A3- PATENT LAWYERS F.W. HEMMER.CH GiFlD V.ULl-ΕΓ * D. GROSSE F POLLMEIER OT Ci ~ C 3 ?? .ci \. " ^r " ^r h. who Wall (Ib) of the development chamber (1) are connected. 7. A method for operating the devices according to the claims 1 to 6, characterized, that inside the inner chamber (?) by controlling the heating temperature of the heating elements (3) and the menjre the developing liquid continuously sprayed through the nozzles (5) against the walls (2c) of the inner chamber (2) an unsaturated steam atmosphere is maintained. 8. The method according to claim 7, characterized, that the temperature in the interior (2) is about 50 ° to 3c ^c . 709846/0043