Inventor

TSUTSUI KYOJI

JP45 patents

Patents

45 patents

US6579826B2Jun 17, 2003

Reversible thermosensitive recording medium and image forming and erasing method using the recording medium

RICOH KK122 citations98

US5432534AJul 11, 1995

Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium

RICOH KK65 citations96

US5296439AMar 22, 1994

Reversible thermosensitive coloring recording medium, recording method, and image display apparatus using the recording medium

RICOH KK43 citations96

US4245021AJan 13, 1981

Electrophotographic element having charge transport layer

RICOH KK85 citations95

US6063173AMay 16, 2000

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

RICOH KK22 citations93

US5641724AJun 24, 1997

Reversible thermosensitive coloring composition and a thermosensitive recording medium using thereof

RICOH KK26 citations93

US4596754AJun 24, 1986

Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate

RICOH KK38 citations93

US6677273B2Jan 13, 2004

Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material

RICOH KK33 citations92

US6432518B1Aug 13, 2002

Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material

RICOH KK24 citations92

US6154243ANov 28, 2000

Reversible thermal recording method and apparatus therefor

RICOH KK36 citations92

US6090748AJul 18, 2000

Reversible thermosensitive recording material and recording method and recording apparatus therefor

RICOH KK31 citations92

US5981115ANov 9, 1999

Reversible thermosensitive recording material

RICOH KK42 citations92

US5981429ANov 9, 1999

Reversible thermosensitive recording medium

RICOH KK25 citations92

US5942377AAug 24, 1999

Reversible thermosensitive composition and reversible thermosensitive recording medium using same

RICOH KK24 citations92

US5521138AMay 28, 1996

Reversible thermosensitive coloring composition, and recording medium using the same

RICOH KK29 citations92

US5703005ADec 30, 1997

Thermosensitive coloring composition and reversible thermosensitive recording medium using same

RICOH KK18 citations84

US5585320ADec 17, 1996

Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method

RICOH KK16 citations82

US5534907AJul 9, 1996

Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method

RICOH KK14 citations82

US4251613AFeb 17, 1981

Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials

RICOH KK22 citations82

US4251614AFeb 17, 1981

Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials

RICOH KK21 citations82

US5185194AFeb 9, 1993

Heat-mode recording medium

RICOH KK19 citations81

US5932516AAug 3, 1999

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

RICOH KK7 citations74

US5866505AFeb 2, 1999

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

RICOH KK7 citations74

US5552364ASep 3, 1996

Reversible theromosensitive coloring recording method, recording medium and recording apparatus for the recording method

RICOH KK8 citations74

US5395433AMar 7, 1995

Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium

RICOH KK12 citations74

US4716220ADec 29, 1987

Optically anisotropic recording medium and method of recording and erasing information using the same

RICOH KK10 citations73

US6090192AJul 18, 2000

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same

RICOH KK15 citations73

US5955225ASep 21, 1999

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same

RICOH KK14 citations73

US5891823AApr 6, 1999

Reversible thermosensitive recording medium

RICOH KK11 citations73

US5868821AFeb 9, 1999

Thermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming composition

RICOH KK12 citations73

US6656879B2Dec 2, 2003

Method of reversible selective manifestation of different states of functional element

RICOH KK2 citations63

US6001159ADec 14, 1999

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

RICOH KK6 citations63

US4327020AApr 27, 1982

Bis-azo compounds

RICOH KK5 citations63

US4314016AFeb 2, 1982

Electrophotographic element having a bisazo photoconductor

RICOH KK6 citations63

US4293492AOct 6, 1981

Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole

RICOH KK2 citations63

US7456132B2Nov 25, 2008

Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing method

RICOH KK6 citations61

US4540643ASep 10, 1985

Tetrazonium salt compounds, novel disazo compounds, method for the production thereof and disazo compound-containing electrophotographic elements

RICOH KK1 citations52

US7553796B2Jun 30, 2009

Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method

RICOH KK0 citations50

TSUTSUI KYOJI

Patents

Reversible thermosensitive recording medium and image forming and erasing method using the recording medium

Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium

Reversible thermosensitive coloring recording medium, recording method, and image display apparatus using the recording medium

Electrophotographic element having charge transport layer

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

Reversible thermosensitive coloring composition and a thermosensitive recording medium using thereof

Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate

Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material

Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material

Reversible thermal recording method and apparatus therefor

Reversible thermosensitive recording material and recording method and recording apparatus therefor

Reversible thermosensitive recording material

Reversible thermosensitive recording medium

Reversible thermosensitive composition and reversible thermosensitive recording medium using same

Reversible thermosensitive coloring composition, and recording medium using the same

Thermosensitive coloring composition and reversible thermosensitive recording medium using same

Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method

Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method

Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials

Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials

Heat-mode recording medium

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

Reversible theromosensitive coloring recording method, recording medium and recording apparatus for the recording method

Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium

Disazo compounds with xanthone nucleus for electrophotography

Plates for use in lithographic printing

Electrophotographic photoconductor

Novel hydrazone compounds and process for preparing the same

Electrophotographic sensitive materials containing disazo compounds

Electrophotographic sensitive materials containing a disazo pigment

Electrophotographic sensitive element having a photoconductive disazo pigment

Optically anisotropic recording medium and method of recording and erasing information using the same

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same

Reversible thermosensitive recording medium

Thermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming composition

Method of reversible selective manifestation of different states of functional element

Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same

Bis-azo compounds

Electrophotographic element having a bisazo photoconductor

Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole

Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing method

Tetrazonium salt compounds, novel disazo compounds, method for the production thereof and disazo compound-containing electrophotographic elements

Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method