METHOD AND DEVICE FOR MARKING IDENTIFICATION CODE BY LASER BEAM

Title:

METHOD AND DEVICE FOR MARKING IDENTIFICATION CODE BY LASER BEAM

Document Type and Number:

WIPO Patent Application WO/2003/036391

Kind Code:

A1

Abstract:

A method and device for marking an identification code on an article to be marked on a stage by means of a laser beam. The laser beam outputted from an exposure unit is so scanned as to deflect in time series in order in a direction perpendicular to the relative movement direction with respect to the stage. The irradiation is shifted synchronously in the relative movement direction. The irradiated points on the article are arranged like orthogonal coordinates. Another method and device is for marking arrays of identification codes while one exposure unit is moving by one pitch in the relative movement direction.

Inventors:

SATO KENJI (JP)
MORI MASAKI (JP)
UEHARA YUKIHIRO (JP)

Application Number:

PCT/JP2002/011042

Publication Date:

May 01, 2003

Filing Date:

October 24, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TORAY ENG CO LTD (JP)
SATO KENJI (JP)
MORI MASAKI (JP)
UEHARA YUKIHIRO (JP)

International Classes:

G02B26/10; G06K1/12; (IPC1-7): G03F7/20; G02B26/10; B41M5/26

Foreign References:

JP2001166493A	2001-06-22
JP2001265000A	2001-09-28
JPH0477715A	1992-03-11
JPH04191742A	1992-07-10
JPH10142805A	1998-05-29
JPH11133620A	1999-05-21
JPS50148998A	1975-11-28
JP2002365811A	2002-12-18
JP2002351086A	2002-12-04

Attorney, Agent or Firm:

Ogawa, Shin-ichi (Noguchi & Saika International Patent Office Akiyama Building, 22-13, Toranomon 1-chom, Minato-ku Tokyo, JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: HOLOGRAPHIC RECORDING MATERIAL AND METHOD FOR CREATING A LIGHT-RESISTANT HOLOGRAM

Next Patent: WO/2003/036393