JPS57144546A - Photoreceptor - Google Patents

Photoreceptor

Info

Publication number
JPS57144546A
JPS57144546A JP2938281A JP2938281A JPS57144546A JP S57144546 A JPS57144546 A JP S57144546A JP 2938281 A JP2938281 A JP 2938281A JP 2938281 A JP2938281 A JP 2938281A JP S57144546 A JPS57144546 A JP S57144546A
Authority
JP
Japan
Prior art keywords
fine powder
photoreceptor
color
niobate
ortho
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.)
Pending
Application number
JP2938281A
Other languages
Japanese (ja)
Inventor
Yasutaka Suemune
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2938281A priority Critical patent/JPS57144546A/en
Publication of JPS57144546A publication Critical patent/JPS57144546A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Optical Filters (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE:To obtain a photoreceptor to be colored by irradiation of ultraviolet rays and to be decolored by heating or the like, and capable of being used repeatedly, by dispersing a fine powder of an ortho-niobate, a compound of niobium of rare earth elements having photochromism into a transparent film- forming polymer, and forming this dispersion layer on the surface of a substrate. CONSTITUTION:A fine powder of ortho-niobate, a rare earth compound, such as YNbO4 or EuNbO4 containing 0.01-0.1mol% PrNbO4, TbNbO4, or ErNbO4 based on the total composition is heated to 1,250-1,400 deg.C, and pulverized to 0.1-10mum size. This fine powder is dispersed into a transparent solution of a urethane or silicone type polymer, and the dispersion liquid is coated on a substrate, such as paper or synthetic resin film to form a 50-200mum thick photosensitive layer. This photoreceptor is colored from a pale color to a dark brown with ultraviolet rays, and retains this color for a long term. When it is irradiated with laser beams or heated to 100-200 deg.C, it returns to the initial color, and can be used repeatedly.
JP2938281A 1981-03-03 1981-03-03 Photoreceptor Pending JPS57144546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2938281A JPS57144546A (en) 1981-03-03 1981-03-03 Photoreceptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2938281A JPS57144546A (en) 1981-03-03 1981-03-03 Photoreceptor

Publications (1)

Publication Number Publication Date
JPS57144546A true JPS57144546A (en) 1982-09-07

Family

ID=12274581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2938281A Pending JPS57144546A (en) 1981-03-03 1981-03-03 Photoreceptor

Country Status (1)

Country Link
JP (1) JPS57144546A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344580A (en) * 1998-03-31 1999-12-14 Seiko Instruments Inc Reversible discoloring composition and clock enclosing part using this
JP2002255673A (en) * 2001-02-28 2002-09-11 Gifu Prefecture Ceramic product having color rendering property and colorant
WO2005019933A1 (en) * 2003-08-26 2005-03-03 Japan Science And Technology Agency Method for producing functional polyimide fine particle, and rewritable memory material utilizing change in fluorescence characteristics caused by light irradiation or heat treatment
US7622411B2 (en) * 2003-03-26 2009-11-24 Mitsubishi Heavy Industries, Ltd. Thermal barrier coating material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11344580A (en) * 1998-03-31 1999-12-14 Seiko Instruments Inc Reversible discoloring composition and clock enclosing part using this
JP2002255673A (en) * 2001-02-28 2002-09-11 Gifu Prefecture Ceramic product having color rendering property and colorant
US7622411B2 (en) * 2003-03-26 2009-11-24 Mitsubishi Heavy Industries, Ltd. Thermal barrier coating material
WO2005019933A1 (en) * 2003-08-26 2005-03-03 Japan Science And Technology Agency Method for producing functional polyimide fine particle, and rewritable memory material utilizing change in fluorescence characteristics caused by light irradiation or heat treatment

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