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Patent Searching and Data


Title:
METHOD OF FABRICATING GRADUATED PLATE
Document Type and Number:
WIPO Patent Application WO/1998/057129
Kind Code:
A1
Abstract:
The whole circumference of a disk is divided into the first section (B1), the second section (B2), ..., and the N-th section (BN) in the counterclockwise direction. First, a predetermined number of graduation lines are consecutively drawn in the first section (B1). Then, predetermined numbers of graduation lines are continuously drawn in order of the N-th section (BN), the second section (B2) the (N-1)-th section (BN-1), and so on. Thus, the graduation lines are drawn along the whole circumference of the disk. As a result, when one of two adjacent graduation lines is in the N-th section and the other is in the (N-1)-th section (BN-1), the difference between the times at which the graduation lines are drawn is nearly equal to the time taken to draw the graduation lines included in three sections, and the time can be shortened. Therefore, drift error that occurs in proportion to the passage of time does not appear concentratedly on particular portions.

Inventors:
SAWADA KIYOSHI (JP)
ODAKA SHUNICHI (JP)
HIRAI TOSHIO (JP)
Application Number:
PCT/JP1998/002597
Publication Date:
December 17, 1998
Filing Date:
June 12, 1998
Export Citation:
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Assignee:
FANUC LTD (JP)
SAWADA KIYOSHI (JP)
ODAKA SHUNICHI (JP)
HIRAI TOSHIO (JP)
International Classes:
G01D5/36; B81C99/00; G01D5/245; G01D5/347; (IPC1-7): G01D5/245
Foreign References:
JPS6217614A1987-01-26
Other References:
See also references of EP 0937964A4
Attorney, Agent or Firm:
Takemoto, Shoji (23-10 Toranomon 1-chom, Minato-ku Tokyo, JP)
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