Method of fabricating a phosphor screen of a color television picture tube
AssigneeToppan Printing Co., Ltd.
InventorsTatsuo Masaki, Keiji Miyajima, Kenzo Fukuyoshi, Hiroji Kumagai
Life of this patent
Estimating the term…
Loading patent…
AssigneeToppan Printing Co., Ltd.
InventorsTatsuo Masaki, Keiji Miyajima, Kenzo Fukuyoshi, Hiroji Kumagai
Estimating the term…
A method for manufacturing a phosphor screen for a color picture tube is disclosed which comprises the steps of transferring an ink pattern contained on an intaglio having a surface comprising ink receiving portions with a depth of 10.mu. or more, said ink containing 15 to 90% by volume of phosphor powder, by rotatably moving at a first speed a transcriber having a cylindrical surface covered with a layer of a soft material along the surface of the intaglio in order to apply the ink pattern onto the cylindrical surface of the transcriber and transcribing said ink pattern from said transcriber onto an object to be printed for a color picture tube by rotatably moving the transcriber at a second higher speed along the surface of said object.
A method for manufacturing a phosphor screen for a color picture tube comprising the steps of transferring an ink pattern contained on an intaglio having a surface comprising ink receiving portions with a depth of 10.mu. or more, said ink containing 15 to 90% by volume of phosphor powder, by rotatably moving at a first speed a transcriber having a cylindrical surface covered with a 0.2 to 3.0 mm thick layer of a soft material having a rubber hardness of 50.degree. or less, along the surface of the intaglio in order to apply the ink pattern onto the cylindrical surface of the transcriber and transcribing said ink pattern from said transcriber onto an object to be printed for a color picture tube by rotatably moving the transcriber at a second speed along the surface of said object, said second speed being higher than said first speed.
Dependencies are inferred from the claim text.