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Current content: 159 361 214 patent documents

This week's update (25/10/2024 12:00 CET):

149 148 new documents added

988 023 documents amended

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EP 0234903 B1 19900620 - ELECTROSTATOGRAPHIC COPYING

Title (en)

ELECTROSTATOGRAPHIC COPYING

Publication

EP 0234903 B1 19900620 (EN)

Application

EP 87301547 A 19870223

Priority

GB 8604369 A 19860221

Abstract (en)

[origin: EP0234903A2] An electrostatographic copying apparatus 10 is modified, to avoid having to use electrically conductive resin-impregnated paper for copying, by inclusion of a radio-active source (at 52 or 54) for ionising the paper in place of the resin.

IPC 1-7

G03G 13/22; G03G 15/22

IPC 8 full level

G03G 15/00 (2006.01); G03G 15/22 (2006.01)

CPC (source: EP)

G03G 15/22 (2013.01); G03G 15/6597 (2013.01); G03G 2215/00371 (2013.01); G03G 2215/00518 (2013.01); G03G 2215/00654 (2013.01)

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0234903 A2 19870902; EP 0234903 A3 19880302; EP 0234903 B1 19900620; DE 3763344 D1 19900726; GB 2188590 A 19871007; GB 8604369 D0 19860326

DOCDB simple family (application)

EP 87301547 A 19870223; DE 3763344 T 19870223; GB 8604369 A 19860221