Abstract: A method and apparatus is provided for refilling an ink reservoir associated with an ink jet printhead. A refill ink source is brought into sealing engagement with the front nozzle face of the printhead. Ink from the refill reservoir is forced into the printhead nozzles and flows through the nozzle channels back into the reservoir. The refill operation can be enabled by establishing a pressure gradient against the refill ink supply forcing it through a pressure regulating drive seal, or a filter, into the nozzles. Alternatively, a vacuum is established through a vent tube to the cartridge reservoir creating a negative differential at the vent hole and causing the ink from the refill container to pass through the nozzles into the supply reservoir.

Abstract: Disclosed is a recording sheet which comprises (a) a substrate; (b) a coating on the substrate which comprises (i) a binder selected from the group consisting of (A) copolymers of styrene and at least one other monomer; (B) copolymers of acrylic monomers and at least one other monomer; and (C) mixtures thereof; and (ii) an additive having a melting point of less than about 65.degree. C. and a boiling point of more than about 150.degree. C. and selected from the group consisting of (A) diphenyl compounds; (B) phenyl alkanes; (C) indan compounds; (D) benzene derivatives; (E) benzyl alcohols; (F) phenyl alcohols; (G) menthol; (H) aromatic amines; and (I) mixtures thereof; (c) an optional filler; (d) an optional antistatic agent; and (e) an optional biocide.

Abstract: Coated sheets or substrates such as paper, opaque Mylar, Teslin or the like are utilized in the creation of simulated, photographic-quality prints formed using non photographic imaging procedures such as xerography and ink jet. A first substrate has a reverse reading image formed thereon. Such an image may be formed using conventional color xerography. A second substrate having a right reading image containing the same information as the first substrate is adhered to the first substrate. The foregoing results in a simulated photographic-quality print which has a relatively high optical density compared to prints using only the reverse reading image on the one substrate.

Abstract: Disclosed is a recording sheet which comprises a substrate, an image receiving coating, and a biocide.

Abstract: Disclosed is a process for generating images which comprises (1) generating an electrostatic latent image on an imaging member in an imaging apparatus; (2) developing the latent image; and (3) transferring the developed image to a recording sheet which comprises (a) a substrate; (b) a coating on the substrate which comprises (i) a polymeric binder selected from the group consisting of (A) copolymers of styrene and at least one other monomer; (B) copolymers of acrylic monomers and at least one other monomer; and (C) mixtures thereof; and (ii) an additive having a melting point of more than about 65.degree. C. and a boiling point of more than about 150.degree. C. and selected from the group consisting of (A) norbornane compounds; (B) phenyl compounds; and (C) mixtures thereof; (c) an optional filler; (d) an optional antistatic agent; and (e) an optional biocide. In a preferred embodiment, the latent image is developed with a liquid developer.

Abstract: A film for electrophotographic transfer comprising a transparent plastic film having a heat resistance temperature of 100.degree. C. or higher having provided on at least one side thereof a transparent resin layer, wherein the transparent resin layer comprises a polyester resin having a peak count value (A) in GPC molecular weight measurement which satisfies relationship: -30.ltoreq.A-B.ltoreq.+20, in which B is a peak count value of the binder resin of a color toner used for fixing, and an initial count value (Cp) in the GPC molecular weight measurement which satisfies relationship: -500.ltoreq.Cp-Ct.ltoreq.-200, in which Ct is an initial count value in the GPC molecular weight measurement of the binder resin of a color toner used for fixing, or a polyester resin having a weight average molecular weight of from 15000 to 40000 and a weight average molecular weight to number average molecular weight ratio of from 3.5 to 10; the transparent resin layer has a thickness of from 1 to 8 .mu.

Abstract: A process for enabling a printer to separate print jobs while using a protocol for receiving page description data that does not have an end-of-file indicator defined. It is assumed that the each job received by the printer has a first packet with a size of 1 byte, and a content of one null character, a number of data packets having 512 bytes each, and a last packet having the remainder of the bytes of the job which usually will number between 1 and 512 bytes, exclusive. This process also assumes that the printer can send a status packet back to the originator of the data packets, a print server, verifying the receipt of a packet. The system now can generate a hard stop between jobs by having the printer verify the receipt of the previous packet for every current packet received, resulting in a flow of status packets back to the server that is one packet out of phase.

Abstract: A toner composition comprised of resin particles, first magenta pigment particles of a molydate silicate salt of rhodamine, and second magenta pigment particles of a 2,9-dimethylquinacridone; and wherein the first pigment is present in an amount of from about 0.5 to about 1.2 weight percent, and the second pigment is present in an amount of from about 1.5 to about 10.2 weight percent.

Abstract: Transfer paper for electrophotography of the present invention includes base paper; and a coating layer provided on at least one side of the base paper. The coating layer includes a pigment and a binder, has a solids content in the range of 2 to 10 g/m.sup.2, and has void-free areas containing no voids having a circle-equivalent diameter of equal to or more than 1 .mu.m and void area containing voids whose circle-equivalent diameter is equal to or more than 1 .mu.m. A proportion of void areas whose equivalent circle diameter is more than 20 .mu.m is not more than 2%, and the average equivalent circle diameter of the void areas and that of the void-free areas as observed on the surface of the coating layer satisfy at least one of the following conditions: (1) the average equivalent circle diameter of the void areas and that of the void-free areas are each from 1.5 to 10 .mu.m; (2) the average equivalent circle diameter of the void areas and that of the void-free areas are each 0.2 to 1.

Abstract: Disclosed is a process for generating images which comprises (1) generating an electrostatic latent image on an imaging member in an imaging apparatus; (2) developing the latent image; and (3) transferring the developed image to a recording sheet which comprises (a) a substrate; (b) a coating on the substrate which comprises (1) a binder selected from the group consisting of (A) polyesters; (B) polyvinyl acetals; (C) vinyl alcohol-vinyl acetal copolymers; (D) polycarbonates; and (E) mixtures thereof; and (2) an additive having a melting point of more than about 65.degree. C. and a boiling point of more than about 150.degree. C. and selected from the group consisting of (A) furan compounds; (B) pyrone and pyran compounds; (C) dioxane compounds; (D) aromatic anhydrides; (E) aromatic esters; (F) alkoxy compounds; (G) methylene dioxy compounds; (H) quinone compounds; and (I) mixtures thereof; (c) an optional filler; (d) an optional antistatic agent; and (e) an optional biocide.

Abstract: Hydroxygallium phthalocyanine crystals having intense diffraction peaks at Bragg angles (2.theta..+-.0.2.degree.) of 7.5.degree., 9.9.degree., 12.5.degree., 16.3.degree., 18.6.degree., 25.1.degree. and 28.3.degree. in CuK.alpha. characteristic X-ray diffractometry, a process for producing the same, and an electrophotographic photoreceptor containing the same are disclosed. The hydroxygallium phthalocyanine crystals are obtained by once preparing impurity-free hydroxygallium phthalocyanine having intense X-ray diffraction peaks at specific Bragg angles, followed by a solvent treatment for crystal transformation, in which the impurity-free crystals are prepared by using excess phthalocyanine ring-forming compound in the synthesis of starting gallium phthalocyanine or by removing insoluble matter from the acid paste of starting gallium phthalocyanine.

Abstract: An electrophotographic imaging member including a substrate, a charge blocking layer, an optional adhesive interface layer, a charge generating layer, and a charge transport layer, the blocking layer comprising solid finely divided light scattering inorganic particles having an average particle size between about 0.3 micrometer and about 0.7 micrometer selected from the group consisting of amorphous silica, mineral particles and mixtures thereof, dispersed in a matrix material comprising the chemical reaction product of (a) a film-forming polymer selected from the group consisting of hydroxyalkylcellulose, hydroxy alkyl methacrylate polymer, hydroxy alkyl methacrylate copolymer and mixtures thereof and (b) an organosilane.

Abstract: Simulated photographic-quality prints are created using non-photographic imaging such as xerography and ink jet. Reverse or wrong reading toner images are formed on a transparent substrate which is adhered to a coated backing sheet. The backing sheet is coated with a polymer material which seves as an adhesive and has a glass transition temperature less than 55.degree. C. A hydrophilic polymer coating having a melting point greater than 50.degree. C. contacting the adhesive polymer serves as a wetting agent for providing an enhanced optical interface as well as protection for the adhesive polymer which has a lower melting point than the adhesive polymer.

Abstract: Metal fibers are mixed, at a predetermined mixing ratio, into a document for which forgery should be prevented. In reading a document, microwaves are applied to the document via a transmission antenna and reflected microwaves are received via a reception antenna. The document includes a portion in which the microwave reception level falls within a predetermined range and which portion is longer than a predetermined length, the document is regarded as a forgery preventive document and the copying operation is stopped. Further, a registration guide is so formed as to reflect microwaves at a certain reflectance. Influences of variations due to a temperature change and aging are compensated by measuring a reception level corresponding to the registration guide.

Abstract: A process for the preparation of toner compositions, or toner particles comprising generating a latex comprised of a sulfonated polyester and olefinic resin in water; generating a pigment mixture comprised of said pigment dispersed in water; shearing said latex and said pigment mixture; adding an alkali (II) halide; stirring and heating to enable coalescence; followed by filtration and drying.

Abstract: The present invention is a method and apparatus for detecting the presence of image regions requiring compact dot growth control and controlling the dot growth of such regions when rendered on a printing system. The invention operates to recognize those pixels within a bitmap image that are appropriate for alteration, using a template-based approach, and then alters the exposure pulse of identified pixels during imaging so as to assure a more stable output by a xerographic development system.

Abstract: An electrocapillary color display sheet is disclosed which utilizes a plurality of sets of different color droplets between two sheets in which each set of droplets will create a pixel of an image. Each set of droplets has at least two droplets in which each droplet has a different color. On one of the sheets there is a first type electrode for each set of droplets. Each first type electrode has at least two holes and each hole holds one second type electrode. Each second type electrode corresponds to one droplet of the corresponding set of droplets. There is also an addressable electrical connection to each droplet. By selectively activating droplets of each set of droplets and its corresponding first type electrode and second type electrode, at least one of the droplets of the set will expand in a space commonly shared by the droplets of each set to create a colored pixel.

Abstract: A method and apparatus for eliminating the accumulation of triboelectric negative toner that occurs between the cleaning edge of the cleaning blade and the photoreceptor surface. After image transfer, the residual toner particles on the photoreceptor surface are then charged to a uniform polarity using either a preclean corotron or a biased conductive blade. A UCA is used to dislodge the residual toner particles away from the photoreceptor surface. The polarity of the particles is opposite to that of the collection roll positioned to attract the toner particles levitated by the UCA onto the collection roll.