VIDEO Printing : Choosing the ultimate Printer Solution to Building your garden shedOn May 2, 2022 by Shazaib Khatri75
This technique of DVD printing utilises pre-manufactured printable DVDRs. The discs will either have a bright or a silver printable surface which is receptive to an inkjet printer. Printable DVDRs are widely available in high street stores or online and even top quality discs are inexpensive.
A Digital DVD printer works for a passing fancy principle as a desktop inkjet printer. The cyan, magenta, yellow and black ink cartridges are loaded into the printer and a printer head makes a series of passes on the printable disc surface depositing the ink according to the artwork file. It’s possible to print extremely detailed high resolution images applying this printing method nonetheless it comes with several drawbacks:
The digital DVD printing process is slow in comparison to other printing processes – Commercial digital DVD printers are only effective at printing around 200 DVDs unattended and each print usually takes up to minute based upon the complexity of the artwork.
Each disc needs to be finished with a level of clear lacquer – this really is to safeguard the printed surface from potential moisture damage when handled. This adds more delay to the process.
However, this DVD printing process does not have any fixed put up cost rendering it ideal for brief runs of significantly less than 100 DVDs which is a service that is greatly in demand with the advance of the digital download.
DVD Screen Printing
Screen printing is really a tried and tested printing method that has been used in the commercial printing industry for decades. DVD screen printing is a difference of this process, modified to permit printing onto a disc. This technique is ideal for printing areas of solid colour using vibrantly coloured inks mixed from various proportions of base cyan, magenta, yellow and black ink. Additionally there are fluorescent and metallic inks available for use with this particular process.
A display printing machine features a large rotating platform. The platform is split into 5 printing stations with a UV lamp between each station and the next. DVDs with a base coat of any colour could be printed on, which allows for a maximum of 6 different colours in the artwork design.
The printing screen, that the process gets its name, is really a very fine mesh screen which is initially covered with a thermally reactive emulsion. 咭片印刷 A different screen is necessary for each of the colours featured in the last artwork and a celluloid film is also made for each colour. The film is black in the areas where in fact the colour is necessary on the disc, and clear where it is not required. The film is attached along with a display and placed into an exposure unit. A hot, bright light is then briefly switched on on the top of the film. Where in actuality the light and heat feel the clear portions of the film to the screen beneath, the thermal emulsion on the screen is hardened. Where in actuality the film is black, heat and light do not move across the film and so the emulsion remains unchanged.
The screen is then utilized in a spray booth where it is sprayed with an excellent water jet. The water washes away the emulsion which has not hardened leaving a display where ink can move across the mesh only using areas where that colour is necessary according to the design. The screen is then fitted to its station on the DVD screen printing machine. The other 4 screens are prepared in the same way and the equipment is then willing to print.
The DVDs are loaded onto the printing machine automatically. They’re presented on spindles and each disc is lifted by an automatic arm with soft rubber vacuum cups. The DVD is put in to a metal jig which holds the disc securely to prevent any movement whilst it will be printed. The metal jigs are prearranged around the equipment and the DVDs are loaded, printed and then removed once printing is complete. A DVD that has been printed and then removed is replaced at the following machine rotation with a new unprinted disc. This technique continues before the production run is complete.
At each station an alternative coloured ink is put on the disc when a rubber squeegee blade passes on the screen. The screen is pressed down onto the disc surface and the ink is forced through the mesh by the blade. When the ink has been applied the blade returns to its starting position ready for the following disc. The device platen rotates one position and the freshly printed disc passes under a UV lamp. The UV light from the lamp cures the ink instantly and the disc moves to another location station where the following coloured ink could be applied without the chance for smearing of the previously applied ink. The printing and curing process is quickly and a contemporary DVD screen printer is effective at printing significantly more than 3,500 DVDs within an hour.
The necessity for screens and films for each different ink colour in the design to be printed onto the DVD, means that there are fixed costs associated with this particular process. These costs could be minimised by limiting the number of colours active in the DVD print design. It’s perfectly possible to design a nice-looking disc using only a single colour print onto a printable silver DVD. The fixed cost, however, does allow it to be a less viable process for tiny orders of significantly less than 100 DVDs.
Lithographic DVD Printing (Offset printing)
This technique, just like DVD screen printing, is a popular printing method for producing high resolution images on paper or card stock and has been adapted to suit DVDs. Lithographic printing is the greatest process for producing DVDs with a photographic print or artwork involving a delicate colour gradient but isn’t ideal for printing artwork that has large areas of solid colour because of potential coverage issues which might cause a “patchy” print.
The lithographic DVD printing process involves making a metal printing plate which is curved around a roller. The essential principle at use this process is that printing ink and water do not mix. The printing plate surface is treated in some areas such that it attracts ink, the residual areas are treated to attract water and not ink. The end result is a printing plate that can be introduced to ink which only adheres to it where required. The ink on the printing plate is transferred or “offset” to a different roller that includes a rubber blanket wrapped around it. The rubber blanket roller applies the ink to the DVD which is held firmly in devote a steel jig on the equipment bed.
This technique is just as fast while the screen printing process and so many tens and thousands of DVDs could be printed every hour that the equipment is running. Yet again, there are fixed put up costs involved here and so the price to print orders of significantly less than 100 DVDs is high.
DVD Printing Process Summary
In a nutshell, if your project is limited to a tiny run of discs then digital DVD printing is the best way to go. There is obviously no print quality compromise with digital printing over another 2 processes and even though it is the slowest process, this isn’t really relevant if you’re only having 50 discs printed. There are numerous companies specialising in 24 to 48 hour turnarounds on short runs of discs who utilize this printing method exclusively and own it down to an excellent art.
For projects where the amount of discs required is more than 100 and the artwork features bold, solid colours, then your DVD printing process of choice needs to be screen printing. The metallic and fluorescent inks available for this process make for a few truly eye-catching and distinctive designs. If the artwork for the discs is really a photographic image or has a subtle colour gradient, then your printing process best suited to this sort of artwork would be Lithographic printing. For screen and lithographic printing, the more units ordered, the cheaper the unit cost becomes