The process starts with receiving digital data from the customer in the digital image is usually directly from a digital camera or photo to be scanned.
The digital data is then opened on a PC to be checked for non-completeness problem occurs with the output movie.
Then the data made into a data postscript or PDF file and in output to Imagesetter (CTF) through the RIP (Raster Image Processor), for a film separation.
Then through platemaker contacted a printing plate and ready made progressive proof
The steps that must be done:
1. always the best possible preparation for the original image here termed garbage In .. Garbage out .. (Kalo yg processed image with low quality (small file size .. just a 72dpi resolution) then the resultant production would surely be less good his jg ..
2. using Photoshop software to process the gambargunakan potoshop for image processing will be in use for print production. Other software such as windows picture and fax viewer or Photopaint is not recommended.
3. RGB to CMYK conversion
this is very necessary dlakukan.Mengingat no ato digcam bbrp scanner working with RGB color, often a decline in color from RGB to CMYK. how far they will first decrease due to the difference between the RGB colorspace CMYK dmn n greater drpd RGB colorspace CMYK
4. image resolution
its image resolution is bnyk distinguished elements form an image. dmn magnitude certify Dlm ppi (pixels per inch) ato dpi (dots per inch).
to know the input resolution for print auspicious,
dgunakan verifiable formula: 2 x screen ruling. if the screen ruling which in use is 150 LPI then menjd 300 dpi input resolution
jg pd ruling screen printing often as raster dsebut .. ato screen frequency. This influential paper type yg pd later would be in use for printing.
5. digital image analysis and correction of the most important:
* Specify the highlights (white point) and shadow (dark point) way by using the menu ato curve pd level photoshop
* Color cast (color bias) bias is often not desired color, eg Yellowish color (yellow), redish (redness), bluish (blue).
how to get rid of this color is a menu with the curve, color selective color balance ato
* Tone (contrast color - to avoid the image looks 'flat' - flat) way with the curve menu (fix the midtone) * correction warnacaranya can use selective color menu
* Sharpness / sharpness interchangeable with Unsharp masking6 menu. file format
* Tiff (tagged image file format) is a non-compressed file format to preserve the completeness of data recorded color reply
* Eps (encapsulated postscript) format interchangeable inin dgunakan to send bitmap image information postscript dr one prog. k prog. other. dpt dterapkan pd vector drawing bitmap atopun
* Jpeg (joint photography expert group) files for its ud kkompres high mobility of data and practical
* Dcs (explanation for this distinguished bnr2 more k-way printing machine n CTP)
* Pdf (portable document format) is the file format used timeout smua dbuat n jobs are ready for the d output.
its advantages are: interchangeable compress data with good quality, and is cross platform dpt dbuka shingga both PC and macintosh d ..
7. do not forget to link imagestlh we make a design, gather images in 1 folder with dmikian its own would not have happened during the missing link output
8. textteks do not forget .. hrs d d convert to a path or create the outline .. ato his cool language .. 'Off' .. kalo bs not even dmatikan, which always include the type fonts in use in 1 folderbtw .. do not forget jg .. tlalu jgn small fonts .. because it would complicate the reading
9. vector drawing
* Make sure it is CMYK
* Discard element2 dperlukan yg ga .. suppose we'll make sbuah bodytext .. was ill .. tp jd nah .. sampah2 .. such as text area dbuang tsb hrs ..
* Avoid using the path which tlalu bnyk ..
* Make sure the color of our vector design in accordance with color chart ..
* Overprint is a process of coating colors blend dr an overprint object.tujuan done is to avoid it happening ..... miss register.tp if the use of incorrect overprint problem will occur.
as an example of this brikut:
- Black text with background warnakalo this type .. must be in overprint ..
because in the event miss register, will give rise to white text dsekeliling. krn color appeared on a distinguished background area dtmpt-i text not covered by ink (jd pd plates shift there this .. ksalahan fit the mold)
- Text color with the background color with the background color of text .. should not be in overprint color .. krn text color will join with the background color ..
- White text white text .. also not be in overprint ..
His simple example gini d. .. u pd PNH ato liat tabloid newspaper her text dmn his color fled ga tu? well that his text was gara2 dbaca n dcetak 4 colors by the printing machine .. souw .. dmn suppose the color of his td who wants only black .. (Only black 100%) found by the dbaca 4 color printing (CMYK) so .. no more, .. his friends that his name overprint
* Trapping is a method to avoid problems with printing d register to add shape to the edge of the object at 0:15 to 0:30 mm. dmn print at the moment it happened aj bs development shingga paper raises miss register, causing a 'white effect' which is in freehand diinginkan.menu not exist in: window> toolbar> Xtra operations> trapouw y.. This effect is very dperlukan when using spot color or special .. and also in the packaging industry his trutama gravure.gampang gini .. PNH u liat ato dmajalah newspaper / tabloid a picture of his distinguished edge there appears white right? nan who dnamakan miss it registers without trapping.
To assess the separation film is good film must always perform calibration on a regular basis to maintain the quality of the movie separasinya.
Measuring tool that is used to calibrate a densitometer.
Some thing hrs dr note to check the quality of the film separation, among other things:.
1.density: separation film thickness value.
Recommended maximum density value is 3.8 - 4.2 D.
To know the value of density of a film, using a measuring instrument densitomer hrs Transparency.
Low density value which will result in solid colors on your printed output will look faded or the color is not dark. One cause of low density is krn processor conditions are less good.
2. linearization dot (raster): raster 50% in digital files must be out 50% jg on film with more or less 2% tolerance
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