Electrophotographic printing plate precursor and photosensitive lithographic printing plate precursor
AssigneeFuji Photo Film Co., Ltd.
InventorsHiromichi Tachikawa, Hiroaki Yokoya, Yoshihiko Urabe
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Abstract
A novel electrophotographic printing plate precursor and a novel photosensitive lithographic printing plate precursor are disclosed, in which a specific layer is formed on the end face thereof.
Claims35
An electrophotographic printing plate precursor comprising a photoconductive layer on a conductive support having a hydrophilic surface, wherein a printing plate is prepared by imagewise exposure, toner image formation by development with a toner and removal of the photoconductive layer in the nonimage areas other than the toner image areas, characterized in that a layer containing a polymer having at least a polysiloxane structure is formed at the end face of the plate precursor.
An electrophotographic printing plate precursor comprising a photoconductive layer on a conductive support having a hydrophilic surface, wherein a printing plate is prepared by imagewise exposure, toner image formation by development with a toner and removal of the photoconductive layer in the nonimage areas other than the toner image areas, characterized in that a solution containing a silicate of formula:
- mSi.sub.2 /nM.sub.2 O (wherein M is an alkali metal atom and the ratio of m/n is 0.5 to 8.5) and a hydrophilic resin is coated on the end face of the plate precursor and further a layer containing at least a polysiloxane structure is formed thereon.
An electrophotographic printing plate precursor comprising a photoconductive layer on a conductive support having a hydrophilic surface, wherein a printing plate is prepared by imagewise exposure, toner image formation by development with a toner and removal of the photoconductive layer in the nonimage areas other than the toner image areas, characterized in that the end face of the plate precursor is desensitized and further a layer containing at least a polysiloxane structure is formed thereon.
An electrophotographic printing plate precursor comprising a photoconductive layer on a conductive support having a hydrophilic surface, wherein a printing plate is prepared by imagewise exposure, toner image formation by development with a toner and removal of the photoconductive layer in the nonimage areas other than the toner image areas, characterized in that an aqueous solution containing a silicate of formula:
- mSiO.sub.2 /nM.sub.2 O (wherein M is an alkali metal atom and the ratio of m/n is 0.5 to 8.5) and a hydrophilic resin is coated on the end face of the plate precursor.
An electrophotographic printing plate precursor comprising a photoconductive layer on a conductive support having a hydrophilic surface, wherein a printing plate is prepared by imagewise exposure, toner image formation by development with a toner and removal of the photoconductive layer in the nonimage areas other than the toner image areas, characterized in that an aqueous solution containing a silicate of formula:
- mSiO.sub.2 /nM.sub.2 O (wherein M is an alkali metal atom and the ratio of m/n is 0.5 to 8.5) and a hydrophilic resin is coated on the end face of the plate precursor and further an insulating resin is coated thereon.
A photosensitive lithographic printing plate precursor comprising a photosensitive layer on a conductive support having a hydrophilic surface, characterized in that an aqueous solution containing a silicate of formula:
- mSiO.sub.2 /nM.sub.2 O (wherein M is an alkali metal atom and the ratio of m/n is 0.5 to 8.5) and a hydrophilic resin is coated on the end face of the plate precursor.
Dependencies are inferred from the claim text.