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公开(公告)号：DE2418762A1
公开(公告)日：1974-10-31
申请号：DE2418762
申请日：1974-04-18
Applicant: MITA INDUSTRIAL CO LTD
Inventor： TAKAHASHI KENZI , KOUCHI TOSHIHIRO , HIRAKATA OSAKA , KAMEZAWA YASUTOKI , AIZAWA TATSUO
Abstract: An improved process for the diazo-type multicolor reproduction which can give multicolored copies excellent in the hue separation and can increase the number of copies obtained from an original treated with a color-forming agent is disclosed. This improved multicolor reproduction process is characterized by the use of a color-forming composition comprising a thermo-volatile or sublimable coupler and at least one hue separation-improving agent selected from polyalkylene oxides and polyalkylene oxide derivatives which are solid under normal conditions and fatty acid derivatives having a melting point of at least 100 DEG C.
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公开(公告)号：DE2743003A1
公开(公告)日：1978-03-30
申请号：DE2743003
申请日：1977-09-23
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KATO MAMORU , YAMAURA SUSUMU , HIRAKATA OSAKA , KAMEZAWA YASUTOKI , AIZAWA TATSUO
Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), is produced by coating on at least one surface of the substrate an aqueous composition containing the thermoplastic acrylic polymer in the form of an aqueous emulsion and the thermosetting resin in the form of an aqueous solution and drying the coated substrate to form a toner-receiving layer on the surface of the substrate. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency.
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公开(公告)号：DE2844691A1
公开(公告)日：1979-04-26
申请号：DE2844691
申请日：1978-10-13
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KATO MAMORU , YAMAURA SUSUMU , HIRAKATA OSAKA , KAMEZAWA YASUTOKI , AIZAWA TATSUO
Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) 100 parts by weight of thermoplastic acrylic-styrene copolymer and (B) 10 to 100 parts by weight of dry method finely divided silica is disclosed. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency without broadening of contours of the image. This transfer sheet has feel and touch quite similar to those of ordinary paper and is very excellent in graphic characteristics.
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