What does the photo in the advertising company mean?

Advertising photos are divided into indoor photos and outdoor photos. Mainly depends on the place to use. These two machines are different from ink. The photos were mainly drawn with a photo machine. The width of a general photo machine is 1.52M, and the materials that can be sprayed are adhesive tape, PP synthetic paper, photographic paper, lamp sheets, various photo fabrics, transparent sheets, waterproof PP, etc. A photo is a photo sprayed by a photo machine, which can be divided into oily photo and water-based photo. Oily photos are also called outdoor photos. It is not easy to fade in the wind and sun, and water-based photos are generally used indoors. The price of photos is different with different materials. For example, ordinary, photo paper is real, photos with glue, photos with film.

Let's introduce the photos and inkjet printing, and the problem of outdoor billboards mentioned by the landlord will be solved.

1 photo-refers to high definition, higher image quality and better paper use.

2 spray painting-glue can be used, but the definition of general spray painting is not as high as that of photos.

The material of inkjet printing is lamp cloth, and the color on it will fade with the change of temperature and time. Relatively speaking, the effect of ink painting is not as good as that of photo. It is recommended to use photo painting, which is not expensive, but the effect and preservation time are much longer.

There are tapes, posters, lights, photo stickers, car stickers and so on. Self-adhesive can be pasted, generally used as floor stickers, wall stickers and desktop stickers. Posters can't be pasted without glue on the back. They are commonly used as X-shaped stents and Yi Labao. Lights are transparent on both sides and are generally used as light box advertisements (most of the advertisements in those stations are made of this). Photo stickers are very simple, similar to photo stickers, and can be made of professional photo paper, adhesive, posters, lights, etc. Car stickers are also transparent materials similar to lamps, which are generally used for window advertisements.

The key problem is that the photos are clear and easy to save (because the photos have to be pasted on the surface, and there are bright films (to increase the brightness and color of the picture and make it brighter and more gorgeous) and dumb films (the surface is ground yarn).

Inkjet generally refers to the output of outdoor advertising pictures, and the output is a big picture. For example, many billboard pictures beside the highway are the output of inkjet printer. The output models are: NRU Sasha 3200, Fortune 3200, etc. Generally the maximum width is 3.2 meters. The medium used by inkjet printers is generally advertising cloth (commonly known as light box cloth), and the ink is oily ink. In order to ensure the durability of the picture, inkjet companies usually have a darker picture color than the color on the display. Its actual output image resolution generally only needs 30~45DPI (compared according to printing requirements), and the actual picture size is relatively large, with an area of several hundred square meters.

Photo generally refers to indoor use, and the picture it outputs is generally only a few square meters in size. For example, small advertising pictures used by manufacturers at exhibitions. The output model, such as HP5000, generally has a maximum width of 1.5m ... The media used by the photo machine are generally PP paper and lamps, and the ink is water-based ink. After the output image is completed, it needs to be coated and mounted. The output resolution can reach 300- 1200 dpi (different models have different colors), and its color saturation is clear.

The following briefly introduces some simple requirements for making and outputting images in inkjet printing and photographing.

1, size:

The size of the ink-jet image is the same as the actual picture size, which is different from printing, and there is no need to leave a bleeding part. In inkjet printing companies, there is a blank margin behind the output screen. The general screen margin is 10CM. As shown in the figure, you can negotiate with the inkjet output company how many edges to leave for buttonholes. The price is calculated in square meters, so the screen size is in centimeters.

2, image resolution requirements:

Ink-jet images are often very large, so it is necessary to understand the truth that "I don't know the true face of Lushan Mountain". The same is true for inkjet images. If the big picture still uses the printing resolution, it will kill the computer. However, there is no standard requirement for the resolution and filtering of inkjet images. The following are the resolutions I use when I use different sizes, which can be referenced: image area (square meters) 180- infinite 30- 180 1-30 resolution (DPI) 1 1.25 22.544.

Note: Since most current inkjet printers require images of 1 1.25DPI, 22.5DPI and 45DPI for output, reasonable use of image resolution can speed up drawing.

Generally, it takes 72DPI/ inch to take pictures. If the image is too large (for example, the file size exceeds 400M when displaying the actual size of the new image in PHOTOSHOP), the resolution can be appropriately reduced and controlled within 400 m. ..

3, image mode requirements:

CMKY mode is used uniformly in inkjet printing, and RGB mode is prohibited. The current inkjet printers are all four-color inkjet printers, and their colors are completely different from the printing colors. Of course, when drawing, the inkjet printer will follow the printing standard, and the inkjet printer will adjust the color of the picture to be close to the sample.

Photos can be in CMKY mode or RGB mode. Note that the value of red in RGB is defined by CMKY, that is, M= 100 Y= 100.

4, the black part of the image requirements:

It is forbidden to have a single black value in inkjet and photo images, and three colors, C, M and Y, must be added to form mixed black. If it is big black, it can be made as follows: C=50 M=50 Y=50 K= 100. Especially when you use it in PHOTOSHOP, you should pay attention to changing the black part into four-color black, otherwise a horizontal bar will appear on the black part of the screen, which will affect the overall effect.

5, image storage requirements:

It is best to save inkjet and photo images in TIF format, but be careful not to use compressed format.

Size of spray paint. Sometimes the picture should be bleeding. If the machine shrinks the cloth without bleeding, the printed size will be smaller than that on the computer. Especially the big picture, it is more obvious. Generally, we bleed 0. 1 meter per meter. At that time, it depends on the situation of each company

Image color. If the customer takes photos and scans and asks for writing, it is recommended not to change the color mode to CMYK mode. Just slightly adjust the original color mode. Of course, it depends on the results of the scanner.

There is nothing wrong with direct printing with RGB, but not with inkjet printing. Too many colors. Image storage requirements. It has always been in tif format, but it can also be stored in compressed format. About the number of points, it depends. Painting is generally 30dpi, and photographing is generally 72dpi. If the picture is larger, it can be reduced accordingly. The minimum number of points I have done is 10dpi, 300 square. If it is large, it can be divided into several documents. Photos are generally not less than 50dpi. As for the small number of points, the picture will not be blurred, but will produce strong sawtooth. On the other hand, if you increase the number of points and enlarge the picture, it will be blurred and the sawtooth will be less obvious. Generally speaking, you can do both and think for yourself.

With regard to compression formats, inkjet printing companies generally require the use of tiff and cmyk formats. In fact, it is ok to use jpg, but the compression ratio must be higher than 8, otherwise the picture quality is not guaranteed. For the case that the original image is small and blurred after enlargement, noise can be appropriately increased.