Pyongyang University of Publishing and Printing Industry has recently researched and introduced the satchel-decoration printing process by using an ink jet method based on the CTP technology.
The CTP technology can directly print the image data input in a computer on paper, metal, cloth, leather, glass and wood. It is widely used in the printing industry as this technology does not use film and chemical reagents.
Unlike the currently used screen printing method, the new printing process is simple and can bring printed images into line with original ones. Especially, all materials needed for the printing process are locally available ones.
In order to prevent diffusion in jet printing, one of the knotty problems in establishing the printing process based on an ink jet method, scientists completed a method of transforming the physicochemical property of printing substrate.
In addition, they introduced a rational coating method that meets technical indexes, thus improving brilliance and colour tone and obtaining unfading print images.
They also solved different technical problems including adjusting printing conditions to increase descriptive representation according to manuscript and harmonizing the amount of ink absorption and picture deviation according to the moving speed of printing plate so as to improve representation.
“Thanks to the newly-developed ink jet method for the satchel-decoration printing process, the printing cost has been lowered by one fifth as compared to previously, while further improving the quality of decoration printing,” said scientist Kim Chol Gyu.
Their research finding has been introduced into several bag factories including the Sinuiju Bag Factory.
More From Pyongyang Times
Russian President Vladimir Putin referred to the foreign policy line of his country in a diplomatic meeting on January 15. He
January 22, 2026
Russian President Vladimir Putin referred to the foreign policy line of his country in a diplomatic meeting on January 15. He
With contagious diseases breaking out one after another across the world, a flu epidemic is rapidly spreading. The World Health
January 22, 2026
With contagious diseases breaking out one after another across the world, a flu epidemic is rapidly spreading. The World Health
Mountain villages in Jagang Province are turning into a fairyland. House-moving in Puji-ri of Songgan County, Ryongmun-ri of
January 22, 2026
Mountain villages in Jagang Province are turning into a fairyland. House-moving in Puji-ri of Songgan County, Ryongmun-ri of
A new catalyst production base has been built at the Namhung Youth Chemical Complex. The catalyst production base is another
January 22, 2026
A new catalyst production base has been built at the Namhung Youth Chemical Complex. The catalyst production base is another
With the implementation of the Regional Development 20x10 Policy of the Workers’ Party of Korea, regional-industry factories are
January 22, 2026
With the implementation of the Regional Development 20x10 Policy of the Workers’ Party of Korea, regional-industry factories are
The Youth Movement Museum marked the tenth anniversary of its founding. The respected fatherly Marshal Kim Jong Un personally
January 22, 2026
The Youth Movement Museum marked the tenth anniversary of its founding. The respected fatherly Marshal Kim Jong Un personally
It has been ten years since the Youth Movement Museum was opened to public to convey the Workers' Party of Korea's idea of
January 22, 2026
It has been ten years since the Youth Movement Museum was opened to public to convey the Workers' Party of Korea's idea of
Dmitri Medvedev, vice-chairman of the Security Council of Russia, posted an article on an SNS on January 12 to deride the US’ atte
January 21, 2026
Dmitri Medvedev, vice-chairman of the Security Council of Russia, posted an article on an SNS on January 12 to deride the US’ atte
Russia decided to deport a diplomat of the British embassy in the country. On January 15, the Russian Foreign Ministry called the
January 21, 2026
Russia decided to deport a diplomat of the British embassy in the country. On January 15, the Russian Foreign Ministry called the
Spectacular scenes of rural development have unfolded at several farms in Kangwon Province. Newly-built public and production
January 21, 2026
Spectacular scenes of rural development have unfolded at several farms in Kangwon Province. Newly-built public and production
The Academy of Forest Science has been built on a modern basis. The academy has all facilities and conditions, including an office
January 21, 2026
The Academy of Forest Science has been built on a modern basis. The academy has all facilities and conditions, including an office
The case of poisoning of Emperor Kojong is recorded as one of the violations of the sovereignty of Korea committed by the Japanese
January 21, 2026
The case of poisoning of Emperor Kojong is recorded as one of the violations of the sovereignty of Korea committed by the Japanese
Over the past five years since the Eighth Congress of the Workers’ Party of Korea, a new era of overall development has been
January 21, 2026
Over the past five years since the Eighth Congress of the Workers’ Party of Korea, a new era of overall development has been
A croaker pedigree farm has been built at the Ongjin West Sea Fish Farm. The pedigree farm has an office building, welfare
January 21, 2026
A croaker pedigree farm has been built at the Ongjin West Sea Fish Farm. The pedigree farm has an office building, welfare
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the 14th Congress of the Communist Party of
January 21, 2026
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the 14th Congress of the Communist Party of
The Ryongsong Machine Complex, where a flaming torch was lit to create the Chollima spirit in the new era, has turned into a
January 20, 2026
The Ryongsong Machine Complex, where a flaming torch was lit to create the Chollima spirit in the new era, has turned into a
Comrades,I express gratitude to the workers of Ryongsong, teachers and researchers from Kim Chaek University of Technology and Pyo
January 20, 2026
Comrades,I express gratitude to the workers of Ryongsong, teachers and researchers from Kim Chaek University of Technology and Pyo
The Mexican President said in a press conference on January 13 that her country would maintain a foreign policy based on equality
January 20, 2026
The Mexican President said in a press conference on January 13 that her country would maintain a foreign policy based on equality
The ideal socialist villages indicative of the Korean-style civilization of the countryside sprang up at the Chollisong Farm in
January 20, 2026
The ideal socialist villages indicative of the Korean-style civilization of the countryside sprang up at the Chollisong Farm in
The participants in the celebrations of the 80th founding anniversary of the Socialist Patriotic Youth League toured Pyongyang.
January 20, 2026
The participants in the celebrations of the 80th founding anniversary of the Socialist Patriotic Youth League toured Pyongyang.
More Articles
