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
Maria Zakharova, spokeswoman for the Russian Foreign Ministry, warned against Japan’s dangerous moves towards militarization at a
December 06, 2025
Maria Zakharova, spokeswoman for the Russian Foreign Ministry, warned against Japan’s dangerous moves towards militarization at a
Modern rural dwellings which have been built at the Jamjin Farm in Kangso District and the Ryongho Farm in Ryonggang County,
December 06, 2025
Modern rural dwellings which have been built at the Jamjin Farm in Kangso District and the Ryongho Farm in Ryonggang County,
An art troupe of Korean schoolchildren in Japan headed by Ri Chol Su, principal of Toshun Korean Primary School, arrived in
December 06, 2025
An art troupe of Korean schoolchildren in Japan headed by Ri Chol Su, principal of Toshun Korean Primary School, arrived in
The State Academy of Sciences developed the technologies for producing reduced iron and synthetic fuel oil based on coal
December 06, 2025
The State Academy of Sciences developed the technologies for producing reduced iron and synthetic fuel oil based on coal
The Tanchon Smeltery is the one and only business that has been selected as one of the top ten enterprises for three consecutive
December 06, 2025
The Tanchon Smeltery is the one and only business that has been selected as one of the top ten enterprises for three consecutive
The Public Prosecutor General of Venezuela on November 26 exposed and condemned the illegality of the attacks the US is mounting o
December 05, 2025
The Public Prosecutor General of Venezuela on November 26 exposed and condemned the illegality of the attacks the US is mounting o
The Vietnamese embassy in Pyongyang hosted a photo exhibition and reception at the Taedonggang Diplomatic Club on December 3 on
December 05, 2025
The Vietnamese embassy in Pyongyang hosted a photo exhibition and reception at the Taedonggang Diplomatic Club on December 3 on
A meeting took place at the Central Youth Hall in Pyongyang on December 3 to mark the International Day of Persons with
December 05, 2025
A meeting took place at the Central Youth Hall in Pyongyang on December 3 to mark the International Day of Persons with
The expedition of youth and students from across the DPRK to revolutionary battle sites in the area of Mt Paektu visited Chairman
December 05, 2025
The expedition of youth and students from across the DPRK to revolutionary battle sites in the area of Mt Paektu visited Chairman
The exhibition of products of Koryo medicine pharmaceutical factories-2025 closed with due ceremony at the Okryu Exhibition House
December 05, 2025
The exhibition of products of Koryo medicine pharmaceutical factories-2025 closed with due ceremony at the Okryu Exhibition House
New villages have been built at the Chongok Farm and the Jasan Farm in Phyongsong City of South Phyongan Province and the
December 05, 2025
New villages have been built at the Chongok Farm and the Jasan Farm in Phyongsong City of South Phyongan Province and the
South Phyongan Province has newly built the Institute of Agricultural Science. The comprehensive research base with research
December 05, 2025
South Phyongan Province has newly built the Institute of Agricultural Science. The comprehensive research base with research
Modern dwelling houses have been built at the Tongchon Farm in Cholsan County of North Phyongan Province and the Jonchang Farm in
December 05, 2025
Modern dwelling houses have been built at the Tongchon Farm in Cholsan County of North Phyongan Province and the Jonchang Farm in
North Hamgyong Province splendidly remodelled the Kyongsong Tile Factory. The remodelling of the factory furnished with efficient
December 05, 2025
North Hamgyong Province splendidly remodelled the Kyongsong Tile Factory. The remodelling of the factory furnished with efficient
A spokesman for the Chinese Foreign Ministry answered a question put by a journalist as to the US’ sanctions against Venezuela
December 04, 2025
A spokesman for the Chinese Foreign Ministry answered a question put by a journalist as to the US’ sanctions against Venezuela
Young people in South Phyongan Province volunteered one after another to work at coal mines in the province with the will to
December 04, 2025
Young people in South Phyongan Province volunteered one after another to work at coal mines in the province with the will to
The Third Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea held in June 2021 adopted the childcare
December 04, 2025
The Third Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea held in June 2021 adopted the childcare
DPRK scientists and technicians developed a disaster warning information system to ensure scientific, accurate and rapid disaster
December 04, 2025
DPRK scientists and technicians developed a disaster warning information system to ensure scientific, accurate and rapid disaster
Pak Thae Song, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and premier
December 03, 2025
Pak Thae Song, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and premier
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the General Council of the United Russia
December 03, 2025
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the General Council of the United Russia
More Articles
