Title:
IMAGE COPYING DEVICE
Document Type and Number:
Japanese Patent JPH05336319
Kind Code:
A
Abstract:
PURPOSE: To prohibit a copying operation when an original is replaced between a first time original scanning and a second time original scanning, in an image copying device for which two times of original scannings are required.
CONSTITUTION: A line memory b19 stores the image data of the xth line of a first time original scanning. A comparator circuit 20 compares the image data of the xth line of a second original scanning with the image data stored in the line memory b19. A control part 1 controls a copying operation according to the comparison result of the comparator circuit 20.
More Like This:
| JPH07221973 | IMAGE PROCESSING UNIT |
| JP2009028930 | IMAGE FORMING APPARATUS |
Inventors:
DOI KOJI
Application Number:
JP14389392A
Publication Date:
December 17, 1993
Filing Date:
June 04, 1992
Export Citation:
Assignee:
CANON KK
International Classes:
G03G21/04; G03G15/00; G03G15/01; G03G21/00; G06T1/00; H04N1/04; (IPC1-7): H04N1/04; G03G15/00; G03G15/01; G03G21/00; G06F15/62; G06F15/64
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)