Depth of the role of industrial UV flatbed printer Ricoh Toshiba grayscale printing technology and summer maintenance Summer maintenance uv flatbed printer attention problem
One: temperature control. UV printers should be placed in a cool, backlit corner to avoid high temperatures and direct sunlight. Suitable indoor temperatures are 19 ° C ~ 32 ° C, humidity is 25% ~ 70%.
Second: power off and moisturize. When the UV flatbed printer does not work for a long time, you can choose to power off and moisturize, do not let the machine out of standby, so the temperature will rise.
Three: After the UV flatbed printer is turned on every day, be sure to first test the strip to see if the nozzle is clogged. The summer temperature is too high and the ink is easy to dry.
Four: In week, the internal and external hygiene of the cleaning equipment, especially in key positions such as the nose and guide rails, is especially important. Summer temperature is high uv printer ink preservation should also pay special attention, ink storage temperature is best not to exceed 25 degrees, placed in the shade of the shade;
Industrial uv flatbed printer Ricoh Toshiba grayscale printing technology
Professional sales often say Ricoh and Toshiba print grayscale printing, what exactly is the meaning, what is the use?
Grayscale printing: Also known as "Multi Bits." 2 bits of data per pixel 2bpp or 3 bits of data per pixel 3bpp. By controlling each nozzle to eject a certain number of ink droplets and coalesce into a single ink droplet, different pixels within an image will be presented on the print medium at different droplet sizes. Each igniting of each nozzle can produce different sizes of ink droplets as needed.
Higher resolution: higher resolution lower resolution: lower resolution grayscale: grayscale
UV flatbed printers mostly use industrial printheads, and the grayscale printing technology of the printheads is very important. During the operation of the uv flatbed printer, the position of the nozzle is fixed and the head is constantly moving. Because the printed object is stationary, a large amount of fluid can potentially be placed to achieve higher ink throughput. The scanning printer can achieve the purpose of enhancing the print quality by multiple back and forth movements of the print head, and different uv flatbed printers only have the opportunity to pass the print medium through the print head, which makes the gray scale printing technology change on the uv flatbed printer. It is vital.
Uv printer grayscale printing technology that generates different sizes of ink droplets based on data in a single image file to achieve image quality consistent with small dot high resolution imaging without sacrificing productivity associated with large ink droplet printing .
The printhead's drive system (both hardware and software) requires special design to match the grayscale printing capabilities of different brands of printheads.
From the size of the ink droplets produced, there are three different printing methods:
Two-state printing: Also known as "Native", 1 bit of data per pixel (1bpp). Each pixel is 0 or 1 drop. All nozzles on the printhead eject the same size of ink droplets each time it is fired.
Adjustable two-state printing: Also known as "Binary Multi Pulse". 1 bit of data per pixel (1bpp). The value of the pixel is 0 or 1. A plurality of ink droplets will coalesce into a single ink droplet onto the printing medium during the ejection process according to the size of the ink droplets required by the user.
The adjustable two-state print mode allows the user to select the appropriate amount of ink on a single-pass printer without having to change the type of printhead used.
In two-state printing, each nozzle can only generate ink droplets of a fixed size, and the "pixels" that are finally printed onto the medium have only "ink drops" and "no ink drops". In contrast, grayscale printing can produce droplets of different sizes and have more advantages in printing, such as sharper text, sharper edges, color matching with less ink, and for single The -pass printer is extremely important and does not have to sacrifice high quality prints for production.
Two-state printing: The printhead requires a single, optimized trapezoidal pulse to produce a matching base drop size when the printhead is designed.
Adjustable two-state printing: The printhead uses a continuous trapezoidal pulse of increasing amplitude to produce ink droplets with a base droplet size of 1.5 to 3 times. Each time the ignition head can only be selected to be turned on or off, in which case all pulses in the waveform will be used, so the size of the ink drops cannot be selected based on different pixel points within the same image. In this mode, a multi-pulse amplifier is required.
Grayscale printing: During any ignition pulse period, the nozzle on the printhead can be controlled to eject a small, medium or large ink droplet. Small, medium, and large ink dots are generated according to the needs of the image. In this mode, a multi-pulse amplifier and multi-bit data encoding and decoding functions are required.
Supporting grayscale printing The design of a printhead driver board is a complex task that requires skill and experience.
The drive system must have the ability to generate a suitable high voltage waveform containing high quality trapezoidal pulses over a range of injection loads that must support several trapezoidal pulses of different amplitudes within a single waveform, and these waveforms must be Programmatically, the waveform structure can be optimized for different applications or inks. Ultimately, the data path circuitry must update the state of the switches in the driver chip in time just before each pulse in the waveform occurs.
In order to ensure that all ink droplets have the correct size and ejection speed, a very precise waveform shape must be generated in the drive circuit. And when generating these waveforms, you must consider the following complications:
If an ink droplet is driven by a pulse at the beginning of a waveform, then the ink droplet will appear earlier from the nozzle.
Small ink droplets travel longer in the air than large ink droplets (while the print medium is constantly moving)
Some ink drops are faster than other ink drops due to different waveform pulse sizes
Ink droplets may collide with other ink droplets during the flight and combine with them.
The distance between the surface of the printhead on the printhead and the surface of the print medium is variable
Different types of inks need to match different waveforms
Ideally, the driver board will have a power amplifier for each nozzle row to allow each row of nozzles to be applied to different waveforms to compensate for the difference between each nozzle row. In contrast, an inexpensive, simple driver board simply switches between two potentials. For best results, each generator droplet's waveform pulse should have a different pulse shape. For example, the first shot of the ink droplet requires more energy than the second shot of the ink droplet because the piezoelectric element is already in an oscillating state during the second shot. This means that ideally, the hardware that generates the voltage waveform should be able to support analog pulses of different shapes. A subtle driver board will try to skip these complex requirements, but simply generate a waveform pulse by simply switching between the two levels.
Application-specific tuning is very important for accurate drop placement and high speed drop ejection.
As long as you know the uv printer grayscale printing technology is very important, choose the industrial nozzle to see the print head can print gray level is a few, print out the actual effect ok just fine.
By providing independent timing control of each pulse and the ability to match any pulse segment to a particular drop size waveform, more powerful control can be achieved over simple multi-pulse operation.
After reading the above introduction, it should be no stranger to grayscale printing, so it is completely incorrect to judge the quality of the nozzle from grayscale printing. Even if the specific flatbed printer uses the same nozzle hardware accessories, the quality can not keep up with the actual use. There are big differences. For more information about small UV flatbed printer technology,