Talking about the painting knowledge and experience

First, a variety of inkjet application knowledge:

There are two types of inkjet: one is the output of outdoor advertising screens, and the other is the output of indoor advertising screens. Friends can customize according to the actual situation. The price of an inkjet product is calculated by multiplying the actual square meter by the price per square meter, and the design fee is charged based on the difficulty level. Here are two general categories of general materials:

a

1. Pp film (also known as our poster, exquisitely colloidal, high-precision, but no self-adhesive surface behind, customers can use double-sided adhesive on the wall, can be used multiple times)

2. Adhesive (It differs from pp film in that it has its own adhesive surface, and the customer tears the back film and sticks it on the wall)

3. Photo paper (also known as a poster, fine-grained, high-precision, no plastic surface)

4. Light box film (exquisite inkjet printing in front of the light box, which is different from the inkjet printing on our common signboards, but for the inkjet printing on the McDonald's food light box, with the characteristics of exquisite image and moderate light transmission)

5. Adhesive backing ordinary board (that is, the back adhesive is affixed with a kind of special kt board like foam board, and then add a perimeter of the edge, forming a picture frame, this material is light, can be used as a company decoration, exhibition display.)

6. The difference between the high-quality backboard and the ordinary board is that it will not produce bubbles when it is used for a long time.

7. Silk cloth (similar to silk-like printing materials, used for more romantic and elegant display occasions, such as clothing stores, etc.)

8. Canvas cloth (used for a more romantic and elegant display area, has a certain oil painting texture, can be used for wedding photography, etc.)

9. Transparent adhesive (the other type of adhesive, but this type of transparent phenomenon, most of them used for posting at the door, this material is noble and generous, is a choice to display the company's image.)

b

1. Outdoor light cloth (we see large-scale outdoor printing, this kind of light is from the outside to the spray cloth.)

2. Outdoor light cloth (we see the inkjet on the outdoor signboards, this kind of light is in the light box to spray outwards.)

3. Body stickers (used for printing on the body, such printing stickiness, anti-sun)

4. Outdoor cloth (for more romantic and elegant display occasions, but this type can be used outdoors)

5. Mesh cloth (mesh printing material, a special material for the guests to reflect the style of a material)

6. Single-bore (material applied to body glass, used with body wrap)

For indoor use, the output screen is generally only a few square meters in size. One end limits the maximum width of 1.5 meters. When the output image is finished, it must be coated (the guest can choose the film or the sub-film), or the sill board is considered as the finished product. The output resolution is high, and the color is relatively saturated and clear. Outdoor accuracy will be relatively small, unlimited size, without film.

Note: The inkjet image is best stored in tif format, but it is easy to transfer and can store jpeg format. The files in coreldraw, freehand, and illustrator formats must convert text to curves.

Second, inkjet and photo output requirements:

Inkjet printing generally refers to outdoor advertising screen output, which outputs a large screen, such as the number of billboard screens next to the highway is the output of the inkjet printer. Output models are: nrusalsa3200, color God 3200, etc., is generally the maximum width of 3.2 meters. The media used in inkjet printers is generally advertising cloth (commonly known as light box cloth). The ink uses oily ink. In order to ensure the persistence of the picture, the color of the screen is generally a bit darker than the color on the display. Its actual output image resolution generally only needs 30 - 45dpi (device resolution), the actual size of the picture is relatively large, there are more than 100 square meters of area.

The photo is generally used in the home, and the screen it outputs is generally only a few square meters in size. For example, the small advertisement screen used by manufacturers at the exhibition. Output models such as: hp5000, generally the maximum width of 1.5 meters. The media used in the photo machine is generally pp paper, lamp, ink using water-based ink. After the output image is finished, the film and the sampan plate are counted as finished products, and the output resolution can reach 300-1200 dpi (different in different models), and its color is relatively saturated and clear.

Below we briefly describe some simple requirements for making and exporting images in inkjet and photo.

1, size

The size of the inkjet image is the same as the actual required screen size. It is different from printing and does not require the “bleeding” part. Inkjet companies generally leave "white border" (usually 10cm) when outputting pictures. You can negotiate with the inkjet output company, leaving a few centimeters of the side to use for "buttonholes". The price is calculated per square meter, so the screen size is in centimeters.

Photo output image does not need to "bleed", according to the actual size of the map can be.

2, image resolution requirements

Inkjet images are often very large, and we must understand the truth that “you don’t know the true colors of the mountains, but you are in this mountain”. If the big picture still uses the resolution of the print, it will be exhausting the computer. In fact, the resolution of the inkjet image is not dead standard. The following is the resolution that I personally used when making different sizes of inkjet images. It is for reference only (the image area is square meters):

More than 180 square meters (resolution dpi: 11.25),

30--180 square meters (resolution dpi:22.5),

1-30 square meters (resolution dpi:45)

Note: Since most of the current inkjet printers use 11.25dpi, 22.5dpi, and 45dpi as output resolutions, reasonable use of image resolution can speed up graphics.

Photo resolution is generally 72dpi. If the image is too large (such as the file size exceeds 400m when Photoshop newly displays the actual size), the resolution can be appropriately reduced and the file can be controlled within 400m.

3, image mode requirements

Inkjet uses the cmky mode in a unified manner, and the rgb mode is prohibited. Today's inkjet printers are all four-color inkjet printers. When printing, they should follow the printing standards. The inkjet company will adjust the screen color and sample size.

The photo can use either the cmky mode or the rgb mode. Note that the red value in rgb is defined in cmky, ie m=100y=100.

4, the black part of the image requirements

No single black value is allowed in the inkjet and photo images. The c, m, and y colors must be filled to form a mixed black. If it is big black, you can make: c=50m=50y=50k=100. Especially when using the effects it brings in photoshop, pay attention to changing the black part to four-color black, otherwise the black part of the screen will have crossbars, affecting the overall effect.

5, image storage requirements

The inkjet and photo-realistic images are best stored in the tif format. Note that the compressed format cannot be used.

Third, inkjet and photo prices:

General inkjet prices are low, and pictorial prices are high. The price of the two is related to the accuracy of the output, the material used and the difficulty of the design.