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 Offsetdruck
- "Offset" an indirect means PRINT METHOD. The print is made
by a
Blanket, on HP Indigo as well as in the conventional offset
printing.
- Real Offsetfarbpigmente in the patented ElectoInk used.
- With grid points, as in conventional offset printing, is
used.
- Almost all papers, in the conventional offset printing
used, including in
digital offset printing can be printed.
- The liquid paint dries by itself. The hitherto
conventional digital
Burn the toner deleted. Therefore it is no formation of the
wave
Paper and for any unwanted shine with the print of images.
When offset printing processes are some steps before the
actual print is necessary. First, the text set, and the
illustrations are reproduced. Then instead of the break.
Then the Imposition and the arc assembled before the disk
copy takes place. The machine is set up and the inking and
the dampening set. Finally, the print edition.
The method uses the selective wetting of a structured
image-surface (printed) by an ink-Dampening emulsion and
subsequent transfer of Benetzungsbildes on a rubber cylinder
(blanket), his part on the actual substrate (paper, film,
metal, etc.) transfers ( prints). This intermediate pressure
transmission of the image ( "offset") owes its name to the
proceedings. It is therefore an indirect PRINT METHOD. The
blanket has the advantage that no rubbing farbannehmenden
the layers through the plate into contact with the paper can
take place.
colors:
Most common is the CMYK (cyan, magenta, yellow, key - or even
the BlackBerry is contrast), using any colors for a printing
plate is needed. With these four Colors can be a big part of the
Colors of the color printing. The hue of this color is in the
ISO 2846 definition. By screening different sizes (small, from
the eye only by the near-visible points) are the result of four
inks an enormous amount of color visible to the eye. For Colors,
not with the CMYK Colors can be printed (gold, silver,
reflective Colors, Colors outside the color space) or not to be
printed (such as the a company logo), it is still different
standardized palettes like HKS or Color Pantone (spot). To
offset printing with a special rainbow pattern to be achieved,
including the Iris printing is used.
Coloring of the color offset printing is the coloring, or more
precisely the insoluble pigment. The achromatic (black) pigments
are mostly inorganic, for Buntpigmente are almost exclusively
organic pigments used or Color.
Offset inks are pasty and have a viscosity from 40 to 100 Pa s.
The Colorize the printing is done by inking. To print only the
parts of the colors included, you must first printing of the
dampening form rollers are wetted. Machines with more than four
Farbwerke allow print an additional (jewelry-) colors on the
machine. Additional plants can be special for the inline
finishing lacquer with various applications.
format:
format
DIN-format
390 mm x 280
mm A4-Überformat
360 mm x 520 mm
A3-Überformat
460/480 mm x
640/650 mm A2-Überformat
520 mm x 720 mm
B2-Überformat
640 mm x 915 mm
A1-Überformat
720 mm x 1020
mm B1-Überformat
750 mm x 1050
mm B1-Überformat
890 mm x 1260
mm A0-Überformat
1000 mm x 1400
mm B0
1100 mm x 1600
mm B0-Überformat
1200 mm x 1620
mm B0-Überformat
1320 mm x 1850
mm
1510 mm x 2050
mm
Druckform:
While previously the light-sensitive layer of the offset
printing plate by laying on of positive-or negative-exposed
films, has in large and medium-sized print shops the direct
exposure (Direct Imaging) the printing plate, including CTP (computer
to plate), is enforced. With a laser (thermal or optical) or a
UV radiation source (CTCP, Computer to Conventional Plate) is
the layer of the printing plate with tiny points of different
sizes exposed and then developed - now even "chemical free", ie
under the waiver on a photographic chemical development. (Large
items are for dark and small bright points for games, image
resolution up to 120 dots per inch)
For the manufacture the offset form the transfer of the print
image on the surface of a printing plate and this creates a
solid anchorage of the print image for the print edition. The
offset technique could not last even for an economy so universal
and flexible PRINT METHOD develop because they are always on a
light and versatile offset plate production could help. For each
edition area, for every offset press (sheet and web printing
press) and for all quality requirements are the offset printing
plates and films available. The production of the printing plate
is divided today in the offset copy on film and the filmlose
Offset Platemaking. The offset copy film loses, however, with
increasing importance and will be replaced by CTP and equipment
replaced.
Falzarten:
When folding the paper in accordance with specified dimensions and predetermined pattern on one of the scoring process
prepared bending point, possibly in the direction bent. LASER LINE identifies the type of fold on the number of pages,
caused by the folding (In technical jargon on the number of breaks is called). A once folded
Sheet of paper has four pages, called Four-Fold sides.
For folding, we verweden our new high-performance strong Heidelberg Stahlfolder KH 78, the example with extensive
Brochures will be used. Also in the Machinery: Horizon AFC-566 FKT Binderhaus R50
Digifold car and nail-fold and Rillnak scorers, Typical products are folded flyers and brochures,
but also presentation folders, greeting cards, business cards and CD booklets.
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