Abstract: A postage meter utilizing an offset printing roll. A die plate carried by the roll has a first region for receiving thereon fixed information such as the city and state, and a second region for receiving thereon variable information such as the date and postage amount. At the beginning of a revolution of the printing roll, the second region is depressed and an inking roll applies ink to the first region. Then the second region is moved into the plane of the first region and an ink jet printing device projects ink droplets onto the second region to form the variable information thereon. The quality of the printed form of the variable information is sensed. If acceptable, a document is printed. If unacceptable, the first and second regions are both wiped clean and the entire operation is repeated. The cleaning operation can employ an hydrophilic oil which is applied to the printing roll.

Abstract: Novel radiation-curable, liquid vinyl-hydro copolymers and coating compositions which are free of volatile solvent(s) and which are adapted to be applied to a substrate and cured rapidly by exposure to radiation to form release coatings having good release properties with respect to adhesives and methods for producing such polymers and compositions and for applying and curing such release coatings are disclosed.

Abstract: Organic photoconductive elements with a charge generating layer and a charge transport layer carried on an electroconductive support are disclosed. The invention involves the combined use of a polycarbonate resin having a weight average molecular weight ranging from about 25,000 to about 45,000 as an adhesive in the bonding layer on the electroconductive support and as a binder in the charge transporting layer forming a homogeneous phase to provide a receptive and retentive base layer for the charge-generating layer.

Abstract: Novel radiation-curable, liquid vinyl organosilicon polymers and coating compositions which are free of volatile solvent(s) and which are adapted to be applied to a substrate and cured rapidly by exposure to radiation to form release coatings having good release properties with respect to adhesives, and methods for producing such polymers and compositions and for applying and curing such release coatings.The vinyl polysiloxane may be prepared from dimethyl dichlorosilane, vinyl methyl dichlorosilane, and tetrachlorosilane or trichloromethylsilane.It may be mixed with a polymethyl hydrogen polysiloxane and a photosensitizer and cured by ultraviolet or electron beam radiation.

Abstract: Organic photoconductive elements which are stable and sensitive over a broad range of the spectrum, including the near infrared band, having a charge generating layer and a charge transport layer carried on an electroconductive support are disclosed. The invention involves the use of a first layer between the support and the charge generating layer which is capable of functioning as (i) an adhesive bonding layer on the electroconductive support to provide a receptive and retentive base layer for the charge generating layer and (ii) as a barrier layer to prevent substantially any leakage of charge from the surface of the photoconductor, characterized by the first layer comprising at least one polycarbonate having a weight average molecular weight ranging from about 25,000 to about 45,000, in combination with a charge generating layer that comprises at least one organic pigment which is sensitive to near infrared radiation.

Abstract: Organic photoconductive elements with a charge generating layer and a charge transport layer carried on an electroconductive support are disclosed. The invention involves the combined use of a mixture of a polyester having a Tg (glass transition temperature) larger than about 60.degree. C. with a polyester having a Tg smaller than about 30.degree. C. in the adhesive bonding layer on the electroconductive support and in the charge transporting layer to provide a receptive and retentive base layer for the charge-generating layer.

Abstract: Novel radiation-curable, liquid vinyl organosilicon polymers and coating compositions which are free of volatile solvent(s) and which are adapted to be applied to a substrate and cured rapidly by exposure to radiation to form release coatings having good release properties with respect to adhesives, and methods for producing such polymers and compositions and for applying and curing such release coatings.

Abstract: Dual layer organic photoconductive elements which are stable and sensitive over a broad range of the spectrum, including near the infrared band, and the process for preparing same. The charge-generating layer comprises a mixture of a charge-generating dye, such as a diane blue dye, and a squarylium dye as a near-infrared sensitizer.

Abstract: Improvement in the humidity resistance of photoconductive cadmium sulfoselenide (CdSSe) is achieved by soaking commercially available CdSSe in a solution of vinylidene chloride-acrylonitrile copolymer in an organic solvent, followed by removing the excessive solution and then heating the soaked photoconductive material.

Abstract: Dual layer organic photoconductive elements which are stable, have good negative charge acceptance and are sensitive over a broad range of the spectrum, including near the infrared band, and the process for preparing same. The charge-generating layer comprises a mixture of a charge-generating diane dye, such as Chlorodiane Blue, and a cyanine dye as a near-infrared sensitizer.