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Lenticular printing is a ... H.C.J. Deeks used a similar technique with minute vertical corrugations ... It is manifested in particular by streaks that appear ...
Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics ... causing those areas to appear as white vertical streaks ...
Streaks due to a dirty lens An improperly cleaned lens or cover glass, or one with a fingerprint may have parallel lines which diffract light similarly to support vanes. [ 10 ] They can be distinguished from spikes due to non-circular aperture as they form a prominent smear in a single direction, and from CCD bloom by their oblique angle.
In order to effectively utilize the entire range of available LPI in a halftone system, an image selected for printing generally must have 1.5 to 2 times as many samples per inch (SPI). For instance, if the target output device is capable of printing at 100 LPI, an optimal range for a source image would be 150 to 200 PI.
“If you have a dark-pigmented vertical streak going down your nail, this absolutely should be checked,” Zubritsky said in a 48-second clip that’s drawn 35,300 views since it was posted Tuesday.
Instead, use horizontal and vertical strokes to ensure your glasses are streak-free. Method 2: Dish Soap If you don't have lens spray handy, you can easily clean your glasses and sunglasses with ...
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
Moiré patterns appear in many situations. In printing, the printed pattern of dots can interfere with the image. In television and digital photography, a pattern on an object being photographed can interfere with the shape of the light sensors to generate unwanted artifacts.