Back to results
US 6,805,051 B2Granted
Lithographic printing plate support and method of manufacturing the same
AssigneeFuji Photo Film Co., Ltd.
InventorsHideki Miwa, Teruyoshi Yasutake, Atsushi Matsuura, Akio Uesugi
Life of this patent
Estimating the term…
Abstract
A lithographic printing plate support is provided which becomes a support of a PS plate which has excellent ability to withstand repeated printing, and in which defects in appearance, such as dirtying and the like, do not occur. Also provided are a method of manufacturing the lithographic printing plate support and a PS plate which has such merits.
Claims4
A combination of a lithographic printing plate support and abrasive particles, comprising:
- the lithographic printing plate support having a mechanically roughened surface which is roughened by being rubbed by a rotary brush while said abrasive particles are supplied,
- the abrasive particles having,
- an average particle diameter of 5 to 70 μm,
- wherein a contained amount of particles having a particle diameter of 100 μm or more is in a range of 0.8 to 10 wt %, a contained amount of particles having a particle diameter of 500 μm or more is 1 wt %, and a contained amount of SiO2 is 90 wt % or more in the particles.
1 more element
A method of manufacturing a lithographic printing plate support comprising the step of:
- subjecting at least one surface of a lithographic printing plate support to a mechanical surface roughening treatment by rubbing by a rotary brush while abrasive particles are supplied, the abrasive particles being such that an average particle diameter thereof is 5 to 70 μm, a contained amount of particles having a particle diameter of 100 μm or more is in a range of 0.8 to 10 wt %, a contained amount of particles having a particle diameter of 500 μm or more is 1 wt %, and a contained amount of SiO2 is 90 wt % or more in the particles.
Dependencies are inferred from the claim text.