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JPS55120010A - Picture image display plate - Google Patents

Picture image display plate

Info

Publication number
JPS55120010A
JPS55120010A JP2614779A JP2614779A JPS55120010A JP S55120010 A JPS55120010 A JP S55120010A JP 2614779 A JP2614779 A JP 2614779A JP 2614779 A JP2614779 A JP 2614779A JP S55120010 A JPS55120010 A JP S55120010A
Authority
JP
Japan
Prior art keywords
fine particles
thin slice
image
electric field
picture image
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
JP2614779A
Other languages
Japanese (ja)
Inventor
Tadashi Fujii
Masaaki Nomura
Sakae Shimizu
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2614779A priority Critical patent/JPS55120010A/en
Publication of JPS55120010A publication Critical patent/JPS55120010A/en
Pending legal-status Critical Current

Links

Landscapes

  • Toys (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE: To improve the image display contrast by digital image signal and visual recognition, by selectively applying electric fields in the form of picture image to every one of multiple ultrafine recesses, and varying the direction of orientation of fine particles in the form of thin slice in the inside.
CONSTITUTION: Fine particles 2 in the form of thin slice having high reflectance responding to electric field, made from conductive material such as iron and nickel, are suspended in a solution 3 having a high boiling point, proper viscosity, and similar specific gravity as thin slice fine particles 2, and are sealed in each ultrafine recess 1b. Then, a recording head 7 is made to contact with the side of back 1c of display plate 10, and while moving it at a constant speed in the direction of arrow B, pulse voltages are applied selectively in the form of picture image to each electrode 7a, and an electric field in the direction orthogonal to the back 1c of thin slice 1 is generated between the electrodes and transparent conductive layer 5a, then fine particles 2 in corresponding ultrafine recess part 1b rotate about 90° to absorb light, so that such part becomes dark. Therefore, a clear image 6 in dot form may be obtained. When electric field is applied in the direction of arrow H, the image 6 is erased.
COPYRIGHT: (C)1980,JPO&Japio
JP2614779A 1979-03-08 1979-03-08 Picture image display plate Pending JPS55120010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2614779A JPS55120010A (en) 1979-03-08 1979-03-08 Picture image display plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2614779A JPS55120010A (en) 1979-03-08 1979-03-08 Picture image display plate

Publications (1)

Publication Number Publication Date
JPS55120010A true JPS55120010A (en) 1980-09-16

Family

ID=12185425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2614779A Pending JPS55120010A (en) 1979-03-08 1979-03-08 Picture image display plate

Country Status (1)

Country Link
JP (1) JPS55120010A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140926A (en) * 1984-12-13 1986-06-28 Nok Corp light shutter
JPS61193122A (en) * 1985-02-21 1986-08-27 Canon Inc Optical modulating equipment
JPS61193123A (en) * 1985-02-21 1986-08-27 Canon Inc Optical modulating equipment
JPS61233425A (en) * 1985-04-08 1986-10-17 Pilot Pen Co Ltd:The Visible magnetic card
JPH0290887U (en) * 1988-12-28 1990-07-18

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140926A (en) * 1984-12-13 1986-06-28 Nok Corp light shutter
JPH0473849B2 (en) * 1984-12-13 1992-11-24
JPS61193122A (en) * 1985-02-21 1986-08-27 Canon Inc Optical modulating equipment
JPS61193123A (en) * 1985-02-21 1986-08-27 Canon Inc Optical modulating equipment
JPH0584487B2 (en) * 1985-02-21 1993-12-02 Canon Kk
JPS61233425A (en) * 1985-04-08 1986-10-17 Pilot Pen Co Ltd:The Visible magnetic card
JPH0290887U (en) * 1988-12-28 1990-07-18

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