Introduction of six imaging principles of digital printing presses

1. Electronic photography

Also known as electrostatic imaging, it uses a laser scanning method to form an electrostatic latent image on a photoconductor and then uses the charge action of the charged toner and the electrostatic latent image to transfer the toner image to the substrate to complete printing.

2. Jet imaging

The ink is selectively ejected from the fine nozzles onto the substrate at a certain speed to achieve the reproduction of the ink image. Inkjet printing is divided into continuous inkjet printing and drop-on-demand inkjet printing. Continuous inkjet system uses pressure to make ink flow through fine holes to form continuous ink flow. At high speeds, the ink stream turns into tiny droplets and then charges the droplets. The charged ink droplets can be ejected to the desired position on the surface of the substrate under the control of the charge plate to form printed graphics. The offset of the ink droplet and the position of the ink dot on the substrate are determined by the amount of charge when the ink droplet leaves the pore.

The difference between on-demand inkjet and continuous inkjet is that the pressure on the ink cartridge is not continuous. Instead, it is controlled by the imaging digital signal, and it is ejected only when pressure is needed. On-demand inkjet can save the ink tank and circulation system because of no ink droplet offset, and the structure of the inkjet head is relatively simplified.

3. Electrocoagulation imaging

Electro-condensation imaging is caused by the electrochemical reaction between electrodes that causes ink to condense. And fixed on the surface of the imaging drum to form an image. The ink in the blank area where no electrochemical reaction occurs remains liquid and can be scraped off by the scraper, and the image formed by the fixed ink on the surface of the cylinder can be transferred to the substrate by pressure to complete the printing. The representative model of electro-coagulation digital printing machine is the product of EIcorsy. The resolution is 400dpi.

4. Magnetic recording imaging

Magnetic recording imaging is based on the formation of magnetic latent images by aligning magnetrons of magnetic materials under the action of an external magnetic field. Then the magnetic toner and the magnetic latent image are interacted under the magnetic field force to complete the development. Transfer the magnetic toner to the substrate to form an image. This method is generally only used for black and white printing.

5. Electrostatic imaging

Electrostatic imaging is the most widely used digital printing imaging technology. It uses the laser scanning method to form an electrostatic latent image on the photoconductor. The latent image is formed by the charge action between the charged toner and the electrostatic latent image, and transferred to the substrate to complete the printing. It is divided into two types according to the development method, which is electronic ink development. The resolution is 800dpi, represented by HPInd {go. The other is to use dry toner development, the resolution is 600dpi Xeikon, Xerox, Agfa, Canon Kodak, ManRoIand and IBM digital printers use this method.

6. Thermal Imaging

Thermal imaging is the imaging of the medium by the change of physical properties after the material is heated. Divided into direct thermal imaging and thermal transfer imaging.

Outdoor Sunshade

Outdoor sunshade umbrella is a common outdoor product used to block sunlight and rain, providing people with a comfortable outdoor resting environment. According to different functions and materials, outdoor sunshades can be divided into various types, which will be classified and introduced below.
Umbrella: Mainly used to block sunlight, prevent ultraviolet radiation, and protect people's skin from harm. Umbrellas are generally made of materials with anti ultraviolet coatings, which can effectively block the penetration of ultraviolet rays.
1. Classified by material
1. Polyester umbrella cloth: Polyester is a synthetic fiber material with good waterproof performance and durability. Polyester umbrella fabric is often used for umbrella protection and is suitable for various outdoor environments.
2. Nylon umbrella cloth: Nylon is a synthetic fiber material that is lightweight, wear-resistant, and waterproof. Nylon umbrella cloth is often used for rain and wind umbrellas, and is suitable for outdoor sports and travel.
3. UV resistant coating: Some outdoor sunshades use special UV resistant coatings, which can effectively block the penetration of ultraviolet rays and protect people's skin from harm.
2. Sort by size
1. Small umbrella: The diameter of the umbrella surface is generally below 60 centimeters, suitable for single person use or small spaces.
2. Medium Umbrella: The diameter of the umbrella surface is between 60 centimeters and 80 centimeters, suitable for 2-3 people to use.
3. Large Umbrella: Umbrella with a diameter of over 80 centimeters, suitable for use by multiple people or in larger spaces.

Sunshade,Beach Umbrella,Garden Sunshade,Sandy Shade

Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.sshotelfurniture.com