公开(公告)号：US3781208A

公开(公告)日：1973-12-25

申请号：US3781208D

申请日：1970-04-28

Applicant: MITA INDUSTRIAL CO LTD

Inventor： UEDA Y ,  KAMEZAWA Y ,  AIZAWA T ,  IKEDA T

IPC: G03G9/09 ,  G03G9/12 ,  G03G9/04

CPC classification number: G03G9/091 ,  G03G9/122

Abstract: A LIQUID DEVELOPER COMPRISING A DISPERSION OF A DYE OR PIGMENT HAVING A LONG CHAIN ALKYL GROUP IN THE MOLECULE STRUCTURE IN A LIQUID HYDROCARBON. THE LIQUID DEVELOPER FOR ELECTROPHOTOGRAPHY IS EXCELLENT IN DISPERSIBILITY OF THE IMAGE-FORMING DYE OR PIGMENT PARTICLES, UNIFORMITY IN CHARGE POLARITY, STORAGE STABILITY, DISTINCT-IMAGE FORMING ABILITY AND IMAGE-FIXING PROPERTY, AND SUCH LIQUID DEVELOPER CAN BE PREPARED WITHOUT AID OF CONVENTIONAL MODIFIERS SUCH AS CONTROL AGENTS, DISPERSING AGENTS AND FIXING AGENTS.

公开(公告)号：US3725066A

公开(公告)日：1973-04-03

申请号：US3725066D

申请日：1970-08-31

Applicant: MITA INDUSTRIAL CO LTD

Inventor： NIHYAKUMEN K ,  AIZAWA T ,  UEDA Y ,  KAMEZAWA Y ,  KOUCHI T ,  YOKOYAMA T

IPC: G03C5/18 ,  G03C1/58 ,  G03C7/46 ,  G03C5/34

CPC classification number: G03C7/46 ,  G03C1/58

Abstract: A COLORING MATERIAL IN USE FOR THE DIAZO-TYPE MULTICOLOR REPRODUCTION WHICH COMPRISES A THERMOVOLATILE OR THERMOSUBLIMATIVE ACID ADDITION SALT OF A THERMOVOLATILE OR THERMOSUBLIMATIVE AZO COUPLING COMPONENT HAVING AN AMINO GROUP, AND A DIAZO-TYPE MULTICOLOR REPRODUCTION PROCESS USING SUCH COLORING MATERIAL.

公开(公告)号：US3720619A

公开(公告)日：1973-03-13

申请号：US3720619D

申请日：1969-12-16

Applicant: MITA INDUSTRIAL CO LTD

Inventor： INOUE E ,  UEDA Y ,  AIZAWA T

IPC: G03G9/12 ,  G03G9/135 ,  G03G9/04

CPC classification number: G03G9/1355 ,  G03G9/122

Abstract: A LIQUID DEVELOPER FOR ELECTROPHOTOGRAPHY WHICH COMPRISES A DISPERSION OF A SALT-FORMING REACTION PRODUCT BETWEEN AT LEAST ONE DYESTUFF OR DYESTUFF BASE CONTAINING AMINO GROUPS AND AT LEAST ONE FATTY ACID OF NOT LESS THAN 8 CARBON ATOMS, IN A HIGH ELECTRIC RESISTANCE LIQUID AS CARRIER, SAID FATTY ACID BEING SOLUBLE IN SAID CARRIER LIQUID; CHARACTERIZED IN THAT AS A SALT FORMED FROM SAID FATTY ACID AND SAID DYESTUFF OR DYESTUFF BASE UN INSOLUBLE UN SAID HIGH ELECTRIC RESISTANCE LIQUID, AND THAT SAID FATTY ACID IS PRESENT IN AN AMOUNT OF AT LEAST 4 MOLS PER MOL OF SAID DYESTUFF OR DYESTUFF BASE, THE AMOUNT OF SAID FATTY ACID BEING SUFFICIENT TO DISPERSE SAID SLAT IN THE FINE DIVIDED STATE STABLY IN THE CARRIER LIQUID BUT BEING NOT SO EXCESSIVE AS TO CAUSE ANY BLEEDING OF AN IMAGE TO BE FORMED.

公开(公告)号：US3715213A

公开(公告)日：1973-02-06

申请号：US3715213D

申请日：1970-02-17

Applicant: MITA INDUSTRIAL CO LTD

Inventor： AIZAWA T ,  UEDA Y ,  KAMEZAWA Y ,  NIHYAKUMEN K ,  YOKOYAMA T

IPC: G03C1/52 ,  G03C1/58 ,  G03C5/18

CPC classification number: G03C1/58 ,  G03C1/52

Abstract: A PROCESS FOR THE DIAZO-TYPE MULTICOLOR REPRODUCTION BY WHICH PORTIONS OF A SENSITIVE PAPER CORRESPONDING TO PREDETERMINED PORTIONS OF AN ORIGINAL CAN BE SELECTIVELY COLORED TO DIFFERENT HUES BY DISPOSING A LAYER OF THERMOTRANSFERABLE COUPLER BETWEEN AN ORIGINAL AND DIAZO-PHOTOSENSITIVE PAPER FOLLOWED BY EXPOSURE TO LIGHT AND HEATING OF THE ASSEMBLY. THE LAYER OF THERMOTRANSFERABLE COUPLER IS NOT APPLIED TO THE ENTIRE IMAGE AREA OF THE ORIGINAL AND THE THERMOTRANSFERABLE COUPLER IS FASTER IN COUPLING RATE WITH THE DIAZONIUM SALT UNDER THE DEVELOPMENT CONDITIONS THAN THE BASIC COLOR COUPLER OF THE PHOTOSENSITIVE PAPER OR DEVELOPING SOLUTION.