Background color removal is proposed and implemented for modern color reproduction technology. Started to be used in photo-engraving, according to the principle of using mask technology to operate empirically. In the 1970s, PCR (Programmed Color Reduction) was used in the manual of the Haier electronic color separation machine in Germany. Translated into programmatic color removal; ICR (Integrated Color Removal) is used for full color removal in the manual of the big screen Japanese electronic color separation machine; GCR (GreyComponent Replacement) is used for gray component replacement in American materials. Special circuits or related software implementation.
It is difficult to distinguish in practical application, and it is more flexible in operation. After years of application technology, it has matured. The core is to handle and use the relationship between the three primary colors and the black version. According to the characteristics of the manuscript, the conditions of printability, and the customer's requirements for the product, they can be divided into two categories:
1. The original copy is mainly made of color. This type of manuscript generally has a large density range, rich layers, and bright and bright blocks. There are relatively many primary colors and intermediate colors in the picture. At this time, the three-color version should be reused. On the basis of maintaining the necessary tone, the main color of the screen should be expressed in the three-primary color version as much as possible. The tone is relatively long, the basic color is enough, and the opposite color should be used in an appropriate amount or not. The black tone is relatively short, and the amount of background color removal is relatively small. Medium to dark colors, increase the contrast of the image and improve the adaptability of printing. The black tone level needs to be short and shallow (0% to 50%), some to be short and moderate (0% to 65%), some to be short and brand new (0% to 80%), regardless of the deepest What is the area of ​​the dots, and the starting point is from the middle, focusing on the role of skeleton and reward.
2. The original copy is mainly gradation or achromatic. This type of manuscript is generally rich in layers, simple in tone, and elegant, with non-color as the main tone (such as the focus, thick, heavy, light, and clear ink in Chinese painting). The black version should be used for reproduction. The main tone of the image depends on Black version performance, gray version can be added when needed. The black tone is relatively long, the three primary colors are relatively short on the basis of meeting the requirements of primary and intermediate colors, and the amount of background color removal is increased accordingly, which is conducive to plate making and printing, and it is conducive to reproducing the main tone of the image. Prevent non-color tone yellowing, purple or reddish.
Everything in nature is very rich. According to CY / T23 "Classification of Printing Manuscripts", manuscripts are divided into physical objects, paintings, photographs, electronic manuscripts, etc. In the terminology of image manuscripts, printed matter is also regarded as manuscripts. Each type of manuscript has its own characteristics. When similar manuscripts are made, different customers have different requirements. Although the data used on the equipment or in the software are used, the data used are adjustable, so it is difficult to give quantitative requirements. , Can only give specification requirements.
Originals with color as the main body should use the three primary color versions reasonably, with the three primary colors as the main, the tone is relatively long, the black version is supplemented, the tone is relatively short, and the amount of background color removal is relatively small; The black version should be reused, the tone is relatively long, the tone of the three primary colors is relatively short, and the amount of background color removal is relatively large; if the tone of the three primary colors is long, the black tone is also long, and the image will be gray, dull, and difficult to print ; If the three-primary-color version is short-cut, the amount of background color removal is large, and the black version is short, the image will be gray, flat, thin, discontinuous, and poor three-dimensional. Therefore, according to the characteristics of the manuscript, printability conditions, and customer requirements for the product, in the implementation process, the relationship between the three primary color plates and the black plate is carefully and scientifically handled, and the amount of background color removal is used reasonably to achieve improved product quality and efficiency. purpose.
Bird Supplies
Birds have been kept as pets for at least two thousand years. Some people keep them because of their [songs" – other people enjoy the way many birds mimic human voices – and other people again like the playful antics of many bird species.
We started in the pet industry three decades ago as bird suppliers to the trade. Since the early days we have been supplying accessories, food etc for pet birds, poultry and wild birds. So we do have a comprehensive knowledge of all facets involved in bird keeping.
We stock metal bird cages – essential to keep your pet enclosed. Our cages come in a huge array of styles, sizes and colours.
For wild birds, we have small wooden Bird Houses and rattan bird nests. Great to watch birds nesting in the garden.
We have a very big range of bird feeders – metal and plastic. We also supply food products – millet sprays – calcium blocks and cuttlefish bones.
Our massive range of bird accessories include – bird nets, cuttlefish bone clips, sand perch covers, bird chains, nesting material, perches – plus other lines.
For poultry, we have many sizes of plastic, metal and aluminum drinkers and feeders for farm or home use.
We also have many accessories for pigeons, such as plastic carriers for competitions, aluminum baskets, pigeon leg rings etc.
For you and your birds enjoyment, we have wooden bird`s playgrounds, wooden, acrylic and plastic bird toys, bells and mirrors. Rope bird perches, rope bird toys and ladders – a huge range of toys.
Order Quantity:
One of our advantages in supplying you our Bird Supplies is that we have been in the business for almost four decades. We have a massive range of quality products. Our advantage is that we can supply a very large variety of products to you in smaller volumes than you may be required to purchase elsewhere.
We are flexible in order volume - orders can be supplied LCL or full containers. MOQ can be discussed accordingly.
OEM Service:
Many of our customers have great ideas for Bird Supplies. If you have an idea, we are happy to discuss details with you, including volumes, costs and OEM etc. We can also help with developing products.
Bird Supplies
Bird House,Decorative Bird House Kits,Birdhouse Kits,Wooden Bird House Kit
PERCELL PET SYSTEM CO., LTD , https://www.percell-pet.com