SU38160A1 - Method for making offset zinc printing plates for gravure printing - Google Patents
Method for making offset zinc printing plates for gravure printingInfo
- Publication number
- SU38160A1 SU38160A1 SU138755A SU138755A SU38160A1 SU 38160 A1 SU38160 A1 SU 38160A1 SU 138755 A SU138755 A SU 138755A SU 138755 A SU138755 A SU 138755A SU 38160 A1 SU38160 A1 SU 38160A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- zinc
- printing
- offset
- sulphate
- gravure printing
- Prior art date
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
Description
Предчагаемый способ изготовлени клише дл« глубокой,печати с офсетных пластин состоит в том, что вполне готовое дл печати офсетное клише с чистыми промежутками между штрихами покрывают защитным слоем краски только на печатающих элементах формы а затем пластинку по вешивают в гальванопластической ванне с кислым электролитом и пропускают ток; при этом на свободных местах пластинки, т. е. между штрихами, наращиваетс тонкий слой цинка, который, выступа вверх над элементами рисунка, делает форму углубленной и пригодной дл глубокой печати .The proposed method of making cliches for in-depth printing from offset plates is that a completely ready-to-print offset cliche with clean gaps between strokes is covered with a protective paint layer only on the printing elements of the form and then the plate is hung in an electroplating bath with an acidic electrolyte and passed current; at the same time, on the free places of the plate, i.e., between the strokes, a thin layer of zinc is built up, which, protruding upward over the elements of the pattern, makes the form in-depth and suitable for intaglio printing.
11л | осуществлени способа необходимо , на основании проделанных опытных работ, чтобы офсетна пластинка была тщательно обработана в слабом растворе азотной кислоты с последующей промывкой и нейтрализацией кислоты слабым раствором щелочи дл того, чтобы пробельные места были обезжирены и вполне чисты. Далее необходимо дл закатывани вз ть такую краску, чтобы она вполне плотно закрывала штрих, обладала бы диэлектрическими свойствами и не разлагалась бы в электролите. По произведенным опытам така краска могла быть составлена из Vs по весу хорошей типографской краски и з переводной краски с прибавкой нескольких ка 1ель лавандового масла. Также пригодны и изв.стны уже рецепты по Лангбейну, например, состав из 20 ч. асфальта, 200 ч. гарпиуса и 200 ч. пчелиного воска, или состав из 400 ч желтого воска, 400 ч. асфальта, 100 ч. черного пека, 100 ч. светлого бургундского лака с добавкой небольшо. о количества скипидара.11l | The implementation of the method requires, on the basis of the experimental work done, that the offset plate be thoroughly treated in a weak solution of nitric acid, followed by washing and neutralizing the acid with a weak alkali solution in order that the spaces are degreased and completely clean. Next, it is necessary for rolling to take such a paint so that it completely tightly covers the stroke, would have dielectric properties and would not decompose in the electrolyte. According to the experiments performed, such ink could be composed of Vs by the weight of a good printing ink and s transfer ink with the addition of several ka 1EL of lavender oil. Recipes according to Langbein are also suitable and known, for example, the composition of 20 parts of asphalt, 200 parts of garpius and 200 parts of beeswax, or the composition of 400 hours of yellow wax, 400 parts of asphalt, 100 hours of black pitch, 100 hours. Light Burgundy varnish with the addition of slightly. about the amount of turpentine.
В качестве кислого электролита может быть вз т состав из 150 г SO . 7Н„О 30 г Naa SO - lOH O-j+ 15 г НзВОз + 25 г Al CSOsH-|-20г NaCl + 20z декстрина и 0,05 еж H.jSO,.A composition of 150 g of SO can be taken as the acid electrolyte. 7Н „About 30 g Naa SO - lOH O-j + 15 g NZVOZ + 25 g Al CSOsH- | -20g NaCl + 20z dextrin and 0.05 hedgehog H.jSO ,.
Обработка пластинки в ванне произвотс в течение около 30 минут при плотности тока 0,7 - 0,75 ампер н&дм, напр жение 0,75 вольт, рассто ние между анодами 1 - 1,5 см и температура электролита 18°. При этом получаетс толщина наращиваемого сло в 0,005 мм.Processing the plate in the bath takes about 30 minutes at a current density of 0.7–0.75 amperes dm, a voltage of 0.75 volts, a distance between the anodes of 1–1.5 cm, and an electrolyte temperature of 18 °. This results in a layer thickness of 0.005 mm.
Дл лучшего наращивани сло цинка пробельные места могут быть покрыты тончайшим слоем меди в цианистой ванне в течение нескольких минут, наблюда только тщательно заFor a better build-up of the zinc layer, the whitespace can be covered with the thinnest layer of copper in the cyanide bath for a few minutes;
тем, чтобы защитный слой краски не подвергс разрушению. Такое предварительное омеднение .гарантирует большое сцепление наращиваемого затем сло цинка и облегчает работу.so that the protective paint layer is not destroyed. Such preliminary copper plating ensures a large adhesion of the zinc layer which is then increased and facilitates the work.
Предмет изобретени .The subject matter of the invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU138755A SU38160A1 (en) | 1933-12-10 | 1933-12-10 | Method for making offset zinc printing plates for gravure printing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU138755A SU38160A1 (en) | 1933-12-10 | 1933-12-10 | Method for making offset zinc printing plates for gravure printing |
Publications (1)
Publication Number | Publication Date |
---|---|
SU38160A1 true SU38160A1 (en) | 1934-08-31 |
Family
ID=48354092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU138755A SU38160A1 (en) | 1933-12-10 | 1933-12-10 | Method for making offset zinc printing plates for gravure printing |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU38160A1 (en) |
-
1933
- 1933-12-10 SU SU138755A patent/SU38160A1/en active
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