JPS54130935A - Forming and reading method and apparatus of secret image - Google Patents

Forming and reading method and apparatus of secret image

Info

Publication number
JPS54130935A
JPS54130935A JP3856278A JP3856278A JPS54130935A JP S54130935 A JPS54130935 A JP S54130935A JP 3856278 A JP3856278 A JP 3856278A JP 3856278 A JP3856278 A JP 3856278A JP S54130935 A JPS54130935 A JP S54130935A
Authority
JP
Japan
Prior art keywords
image
drum
black
subjected
infrared ray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3856278A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6112263B2 (cs
Inventor
Takao Aoki
Hidejiro Kadowaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP3856278A priority Critical patent/JPS54130935A/ja
Publication of JPS54130935A publication Critical patent/JPS54130935A/ja
Publication of JPS6112263B2 publication Critical patent/JPS6112263B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Combination Of More Than One Step In Electrophotography (AREA)
JP3856278A 1978-03-31 1978-03-31 Forming and reading method and apparatus of secret image Granted JPS54130935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3856278A JPS54130935A (en) 1978-03-31 1978-03-31 Forming and reading method and apparatus of secret image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3856278A JPS54130935A (en) 1978-03-31 1978-03-31 Forming and reading method and apparatus of secret image

Publications (2)

Publication Number Publication Date
JPS54130935A true JPS54130935A (en) 1979-10-11
JPS6112263B2 JPS6112263B2 (cs) 1986-04-07

Family

ID=12528729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3856278A Granted JPS54130935A (en) 1978-03-31 1978-03-31 Forming and reading method and apparatus of secret image

Country Status (1)

Country Link
JP (1) JPS54130935A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02133987A (ja) * 1988-11-15 1990-05-23 Taiyo Yuden Co Ltd 回路基板とその製造方法

Also Published As

Publication number Publication date
JPS6112263B2 (cs) 1986-04-07

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