It is a printing technique for use in the reproduction of documents and images on any material and consists in transferring an ink through a mesh stretched on a frame, the passage of the ink freezes in parts where there is no image using an emulsion or varnish, leaving open the area where the ink will. It is a repetitive, because once obtained the model, can be played endlessly without losing definition.
One of the reasons that have determined the diffusion of the printing is the ease of preparation of the screen printer.
This preparation can take place with simple means and also with more sophisticated photomechanical procedures.
In both cases the goal is always to be applied to the fabric of woven a gelatin layer impermeable to ink and close the plot in the unexposed parts.
The process is carried out in 7 basic steps:
The manual screen printing process can be summarized as follows:
Matrix used as a frame, or frame, with a fine mesh, opened in certain areas, the image is printed, and closed in others.
The ink, which has a certain density, and is dragged down by a rubber squeegee call, through the mesh and deposited on the support. So the non-printing parts are sealed and remain free those through which the ink deposited on the step to support.
Each support is placed under the die, is printed and removed for drying in the case of a sheet of paper, plastic or metal. If it is a material remains in place for implementing the next color over the former.
Basic stages of industrial screen printing process
The screen printing process involves four basic stages and consecutive
Of these the first three stages are preparing all the elements and the fourth or last truly corresponds to printing.
The main advantage of this printing system is that by their wide range of media that can print quality in many of these are low.
Offset printing is an industrial method of reproducing text and images on paper or similar materials, which comprises applying an oily ink, on a metal plate for transfer to a rubber and finally to the paper by pressure.
Offset printing is done using aluminum sheets fixed and treated on cylinders, so there is a plate for each color you want to represent the case of the photochrome (cyan, magenta, yellow and black).
Thus obtained printed full color image by overlaying, several passes, the different inks. The quantity and proportions of each of the basic inks used in the printing process and partial transparency of these and the support on which is printed, will result in a full color image with a good gradient of tones.
So that the plate is impregnated with ink, only, is subjected to a photochemical treatment (sunstroke and revealed), so that the treated parts repel water. In this way the iron is first passed through a dampening water impregnating and then by an ink.
As the ink is a fatty compound, is repelled by the water, and is deposited exclusively on the treated parts, ie, with image. Water often contains other substances to improve its reactivity (pH and conductivity) with the sheet and the water.
Finally, and inked images are transferred to a rubber lining other cylinder and this rubber which comes into contact with the paper for printing, aided by a pressure cylinder, or platen.
This printing process is called direct film or plate.
The plate is the part that carries the information that on receipt printable ink, it distributes significantly to then move to where you are printing.
The characteristics of a design program ofsset valid for printing is capable of transmitting this information, broken down into colors. In the case of the four colors, we get 4 plates, one for each color (Cyan, Magenta, Yellow and Black) and the combination of these would get a wide range of colors, which is called in full color.
There are 3 most common standard sizes. 35 cm x 50 cm, 50 cm x 70 cm. and 70 x 100 cm. Depends on the size of the original print and the number of impressions will be used either machine, putting on one or more original specifications, reducing print times and therefore the printing costs.
The process of transferring an image, text or combination thereof, made on a plain paper and transfer it to a PVC card. This process is performed by applying a temperature of about 240 ° C on the card image and sublimate. The most common equipment used to apply heat transfer machines are or heat press.
It is mainly used for making small quantities of custom cards with a finish which is not known for its high definition compared to offset printing. Print tapes using CMYK. These are defined as films that are giving the colors to the card. The printing process is performed on-board card. Its main use is the personalization of printed cards. It is also possible to give a final layer of gloss to the card using CMYK ribbons. One disadvantage is that you can not print to the edge, which is common to display a white border around the outside perimeter of the card.
For card printing in small quantities and for mobile applications
A new generation of rewritable card printer.
Print your cards to a single face in high definition, with advanced encoding options.
Print double-sided cards in high definition, with advanced encoding options.
Modular coding and printing for centralized card
Print and laminate security cards