Global Patent Index - EP 0191591 A3

EP 0191591 A3 19870204 - ELECTRO-OPTIC SENSOR

Title (en)

ELECTRO-OPTIC SENSOR

Publication

EP 0191591 A3 19870204 (EN)

Application

EP 86300756 A 19860205

Priority

US 70025285 A 19850211

Abstract (en)

[origin: EP0191591A2] This invention relates to a sheet sensor comprising a light source (62) coupled to an optical waveguide (60) arranged to direct light at the path of the sheet (54). At least a second waveguide is arranged to receive light after transmission through, or reflection from, the light. A transducer converts the received light into an electrical signal which indicates the presence or the absence of a sheet in the path. Both the light source and the <<transmission>> waveguide are secured to each other and to a common substrate (64).

IPC 1-7

G03G 15/00; G03B 27/62; B65H 7/14

IPC 8 full level

G01V 8/16 (2006.01); B65H 43/08 (2006.01); G03G 15/00 (2006.01)

CPC (source: EP)

B65H 43/08 (2013.01); G03G 15/65 (2013.01); G03G 2215/00371 (2013.01); G03G 2215/00611 (2013.01); G03G 2215/00616 (2013.01); G03G 2215/00721 (2013.01)

Citation (search report)

  • [Y] DE 3206069 A1 19820909 - OMRON TATEISI ELECTRONICS CO [JP]
  • [Y] DE 3006541 A1 19800904 - KONISHIROKU PHOTO IND
  • [AD] US 4432599 A 19840221 - MCMAHON DONALD H [US]
  • [A] DE 2807375 B2 19810115
  • [Y] INSTRUMENTS & CONTROL SYSTEMS, vol. 56, no. 9, September 1983, pages 57-58, Radnor, Pennsylvania, US; D.A. KROHN "Inside fiber optic sensors"
  • [Y] PATENT ABSTRACTS OF JAPAN, vol. 8, no. 257 (P-316)[1694], 24th November 1984; & JP - A - 59 128 507 (MATSUSHITA DENKI SANGYO) 24-07-1984
  • [Y] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 150 (P-207)[1295], 30th June 1983; & JP - A - 58 61407 (MATSUSHITA DENKI SANGYO) 12-04-1983
  • [Y] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 180 (P-215)[1325], 9th August 1983; & JP - A - 58 83873 (FUJI XEROX) 19-05-1983
  • [Y] XEROX DISCLOSURE JOURNAL, vol. 5, no. 2, March/April 1980; pages 191-192; P.R. SPENSOR "Paper sensor"

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0191591 A2 19860820; EP 0191591 A3 19870204; JP S61186886 A 19860820

DOCDB simple family (application)

EP 86300756 A 19860205; JP 2188486 A 19860203