As the heat of collection heats up, more and more collectors have a strong interest in ancient calligraphy and painting. However, because of the uniqueness and scarcity of ancient calligraphy and painting, it is impossible for everyone to have it, so many people also have a demand for copies of ancient calligraphy and painting, because the copy also has a certain art appreciation value and potential collection value, especially It is that kind of vivid and realistic reproduction. This will inevitably impose higher requirements on imitation and printing technology, and Colo Printing can maximize the artistic characteristics of the original template and reach the artistic realm that is difficult to be expressed by other printing methods, which has attracted more attention. Can realistically reproduce calligraphy and painting Colo printing technology was invented by German photographer Albert in the 19th century in 1869. It is a transliteration of English collotype. It belongs to the category of lithography. It uses 10mm frosted glass as the base and is coated with a thin layer of sodium silicate. The substrate, then coated with gelatin and dichromate solution, dried to form a photosensitive film, this layer of dry film produces some fine wrinkles, use it to contact with the continuous negative adjustment film negative copy, under the light, the photosensitive film produces different hardening reactions , And finally made a printing plate, and then printed. From the process point of view, it is also called glass plate printing. This technology Qing Guangxu was introduced to China from Japan in the early years. In 1876, Shanghai Youzheng Book Company hired Japanese experts to test successfully; in 1907, the Commercial Press also began to test the Colo edition technology. By 1919, it successfully printed rice paper 15-color overprint, which was a landmark success. China's colo printing business has developed tremendously, showing special charm in printing manuscripts and calligraphy and painting, which can reproduce the colors and levels of manuscripts to the maximum extent and achieve realistic effects. Color artwork is attracting attention The process of colographic printing can be divided into four processes: photography, revision, printing and printing. Photography is a method commonly used to obtain printed film by Coro. With the development of technology, not only digital cameras are used for taking pictures, but also original documents can be scanned directly to generate electronic files. Revising and printing are the key steps of Corot printing technology. When revising the plate, you must carefully compare the original manuscript, focusing on whether you have lost some key and subtle levels, which requires the revision personnel to have a certain level of artistic cultivation and technical level; firstly, the glass must be cleaned when making the plate to ensure that there is no oil on the glass Only apply the photosensitive solution after drying naturally. The main components of the photosensitive solution are gelatin, ammonium dichromate, potassium dichromate, nitrate, and a small amount of benzoin. The negative picture is exposed to the photosensitive film in close contact. After development and printing, the printing plate is formed. The last is printing, mostly manual. The key to whether the printed matter can restore the tone and level of the work is to analyze the color of the original draft. Therefore, in the printing process, you must understand the paint and color characteristics used by the painter; also pay attention to the printing skills and ink color debugging. The products copied by Colo Printing are exquisite and realistic, with vivid brushstrokes and even realism. They have high artistic value and collection value, and are well received by calligraphers and people from all walks of life. This method of copying has become not only a way of spreading art, but also a means of indirectly protecting cultural relics. According to the super simulation characteristics of Colo printing, many places in China began to produce Colo printing on a large scale, such as Beijing Rongbaozhai, Shanghai Museum and Zhejiang. In addition, some exquisite Color artwork produced in different eras such as the Republic of China and the early days of the founding of the People's Republic of China also went to the auction market and achieved good results. In addition, the combination of digital technology and traditional Colo printing makes the printing effect better than ever. All kinds of phenomena show that Colo Printing is ushering in another spring.
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