Title:
【発明の名称】光学スケールを製造するための方法
Document Type and Number:
Japanese Patent JP2003512611
Kind Code:
A
Abstract:
A length of scale (1) which has a profile consisting of a sequence of troughs (18) and crests (16) is subjected to a process to make the shapes of the crests more regular, thus increasing and making more predictable the signal reflected from the crests on the scale. The process comprises passing a length of scale (1) between upper (20) and lower (22) cylindrical rollers. The lower roller (22) may be driven or the length of scale (1) may be pulled through. Reference marks or identification marks may be added to the scale by appropriately marking the upper roller (20). Alternatively, the marks may be added at an initial embossing step which imparts the troughs and crests profile to the scale or at a separate subsequent step.
Inventors:
Michael homer
James Reynolds Henshaw
Peter Jeffrey Holden
James Reynolds Henshaw
Peter Jeffrey Holden
Application Number:
JP2001532060A
Publication Date:
April 02, 2003
Filing Date:
October 13, 2000
Export Citation:
Assignee:
RENISHAW PUBLIC LIMITED COMPANY
International Classes:
G01D5/38; B44B5/00; B44B5/02; G01D5/347; (IPC1-7): G01D5/38
Domestic Patent References:
| JPH03500932A | 1991-02-28 | |||
| JPH0821745A | 1996-01-23 |
Attorney, Agent or Firm:
Yoshikazu Tani (2 outside)