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Patent Searching and Data


Title:
ENGRAVING HEAD
Document Type and Number:
Japanese Patent JPH11198334
Kind Code:
A
Abstract:

To provide an engraving head for a gravure engraving system for damping an excess vibration of a diamond cutting tool with good durability without depending upon an ambient temperature and further rapidly vibrating the tool.

When a shaft 103 is vibrated, a conductive plate 11 fixed to the shaft 103 is vibrated in a direction of an arrow (d), and the plate 11 crosses a magnetic flux changing in a short side direction of a length L1. Accordingly, a Lorentz force of a reverse force to a moving direction of the plate 11 is generated in the plate 11. A magnitude of the force is proportional to a moving speed of a diamond cutting tool 101. Therefore, the tool 101 relatively rapidly moves due to its transient response at a part in which a stepwise density signal abruptly changes to tend to overshoot, but a magnetic damper rapidly attenuates the overshoot of the tool 101 with the force as an attenuating force.


Inventors:
NISHIMURA HIROTAKE
Application Number:
JP708498A
Publication Date:
July 27, 1999
Filing Date:
January 16, 1998
Export Citation:
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Assignee:
DAINIPPON SCREEN MFG
International Classes:
B41C1/045; B44B5/00; (IPC1-7): B41C1/045; B44B5/00
Attorney, Agent or Firm:
Shiro Ogasawara