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
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
January 03, 2026
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People's
Comrades, young people and officers and soldiers, I have come here just after the national celebration to share the beginning of
January 03, 2026
Comrades, young people and officers and soldiers, I have come here just after the national celebration to share the beginning of
Russian President Vladimir Putin touched on the issue of training talents at a meeting of the state council on December 25. The
January 03, 2026
Russian President Vladimir Putin touched on the issue of training talents at a meeting of the state council on December 25. The
All the people across the DPRK significantly greeted the hope-filled New Year 2026. The Kumsusan Palace of the Sun, the sacred
January 03, 2026
All the people across the DPRK significantly greeted the hope-filled New Year 2026. The Kumsusan Palace of the Sun, the sacred
The schoolchildren’s New Year performance in 2026 “Mt Country Is the Best” was given on January 1. The performance was
January 03, 2026
The schoolchildren’s New Year performance in 2026 “Mt Country Is the Best” was given on January 1. The performance was
Greeting the significant New Year 2026, all the Korean people pay the highest tribute and best wishes for immortality to President
January 03, 2026
Greeting the significant New Year 2026, all the Korean people pay the highest tribute and best wishes for immortality to President
At the time when students of revolutionary schools are growing up with pride to be the backbone of the Juche revolution under the
January 03, 2026
At the time when students of revolutionary schools are growing up with pride to be the backbone of the Juche revolution under the
Russian Foreign Ministry spokeswoman Maria Zakharova condemned the US’ acts of hostility against Venezuela at a press conference o
January 02, 2026
Russian Foreign Ministry spokeswoman Maria Zakharova condemned the US’ acts of hostility against Venezuela at a press conference o
The respected Comrade Kim Jong Un received a congratulatory letter from the Central Standing Committee of the General Association
January 02, 2026
The respected Comrade Kim Jong Un received a congratulatory letter from the Central Standing Committee of the General Association
The hope-filled New Year 2026 has come, encouraging all the people of the DPRK to turn out in the vigorous advance towards a new
January 02, 2026
The hope-filled New Year 2026 has come, encouraging all the people of the DPRK to turn out in the vigorous advance towards a new
The respected Comrade Kim Jong Un received a congratulatory letter from the General Association of Koreans in China on January 1.
January 02, 2026
The respected Comrade Kim Jong Un received a congratulatory letter from the General Association of Koreans in China on January 1.
The respected Comrade Kim Jong Un received New Year’s cards from heads of state, political party leaders and personages of differe
January 02, 2026
The respected Comrade Kim Jong Un received New Year’s cards from heads of state, political party leaders and personages of differe
Kim Jong Un, general secretary of the Workers’ Party of Korea, president of the State Affairs of the Democratic People’s
January 02, 2026
Kim Jong Un, general secretary of the Workers’ Party of Korea, president of the State Affairs of the Democratic People’s
All the people across the DPRK are paying the highest respect to President Kim Il Sung and Chairman Kim Jong Il, eternal leaders
January 02, 2026
All the people across the DPRK are paying the highest respect to President Kim Il Sung and Chairman Kim Jong Il, eternal leaders
On New Year's Day warm affection was shown for children by the benevolent father who represents the bright smile of them, the hope
January 02, 2026
On New Year's Day warm affection was shown for children by the benevolent father who represents the bright smile of them, the hope
The hopeful New Year 2026 has come to the country dynamically advancing toward the grand goal of eternal prosperity for the
January 01, 2026
The hopeful New Year 2026 has come to the country dynamically advancing toward the grand goal of eternal prosperity for the
The respected Comrade Kim Jong Un made a speech at a New Year celebration. The full text of his speech is as follows: Dear
January 01, 2026
The respected Comrade Kim Jong Un made a speech at a New Year celebration. The full text of his speech is as follows: Dear
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People’s
January 01, 2026
Kim Jong Un, general secretary of the Workers' Party of Korea and president of the State Affairs of the Democratic People’s
Marking the New Year 2026, the Editorial Board of The Pyongyang Times extends warm greetings to all readers, who have got familiar
January 01, 2026
Marking the New Year 2026, the Editorial Board of The Pyongyang Times extends warm greetings to all readers, who have got familiar
Villages of the Konggwi Vegetable Farm in Kanggye City and the Kaewon Farm in Wiwon County, Jagang Province, underwent great
December 31, 2025
Villages of the Konggwi Vegetable Farm in Kanggye City and the Kaewon Farm in Wiwon County, Jagang Province, underwent great
More Articles
