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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7413840 | Process for forming an electrophotographic photosensitive member with depressed portions by condensing a surface of a surface layer on which a coating liquid is present A production method of an electrophotographic photosensitive member which has high productivity when producing a surface layer in which depressed portions which are independent respectively are formed on an electrophotographic photosensitive member surface, and can ... | 08/19/2008 |
| 7371491 | Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor, and image forming apparatus and process cartridge using the electrophotographic photoreceptor A photoreceptor including an electroconductive substrate; and a charge blocking layer; a moiré preventing layer; and a photosensitive layer, which are overlaid overlying the substrate in this order, wherein the photosensitive layer includes a titanyl phthalocyanine... | 05/13/2008 |
| 7335452 | Substrate with plywood suppression The present disclosure provides photoreceptors and methods for fabricating photoreceptors. Photoreceptor device surfaces and fabrication methods have been designed to suppress a “plywood effect.” One method includes providing a substrate, rotating the substrate,... | 02/26/2008 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7267914 | Electrophotographic photoconductor, process cartridge, image forming apparatus and image forming method An electrophotographic photoconductor, including an electrically conductive substrate, an undercoat layer containing a filler and a binder resin and provided on the substrate, and a photoconductive layer provided on the undercoat layer and containing a binder resin.... | 09/11/2007 |
| 7232635 | Image forming method, image forming apparatus, and processing cartridge A method of forming a toner image employing a photoreceptor is described. The photoreceptor comprises a photosensitive layer on a cylindrical conductive substrate, Formula (1) and Formula (2) are held, 0 | 06/19/2007 |
| 7205079 | Imaging member A photoconductive imaging member includes a substrate, hole blocking layer, a photogenerating layer, and a charge transport layer, wherein the charge transport layer is formed in a sol-gel process. The charge transport layer includes an in situ formed organic-inorga... | 04/17/2007 |
| RE39516 | Single-layer type electrophotosensitive material and image forming apparatus using the same The present invention provides a single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the conductive substrate, wherein the photosensitive layer contains a phthalocyanine compound as an electric char... | 03/13/2007 |
| 7166248 | Reduced VOC emission alkenyl aromatic polymer foams and processes A method for producing an alkenyl aromatic polymer foam structure that comprises melting at least one alkenyl aromatic polymer resin. An effective amount of blowing agent mixture is dissolved in the at least one alkenyl aromatic polymer. The blowing agent mixture co... | 01/23/2007 |
| 7151143 | Blends containing macrocyclic polyester oligomer and high molecular weight polymer The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation an... | 12/19/2006 |
| 7090890 | Modification of polymer optoelectronic properties after film formation by impurity addition or removal The methods of this invention involve modification of the properties of an organic film after it has been deposited by either adding new components into it from its top or bottom surface, or by causing components to leave the film from its top or bottom surface. In ... | 08/15/2006 |
| 7071291 | Isolation, formulation and shaping of macrocyclic oligoesters Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ... | 07/04/2006 |
| 7060404 | Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptor A photoreceptor including an electroconductive substrate; and a photosensitive layer located overlying the electroconductive substrate and comprising a charge generation material, a charge transport material and an inorganic filler, wherein the content of the inorga... | 06/13/2006 |
| 7052813 | Imaging member A charge transport layer for an imaging member comprising a first and second charge transport layer wherein the second charge transport layer comprises a charge transport component, a hindered phenol covalently bonded to a polymer, and an additional polymer binder o... | 05/30/2006 |
| 7045556 | Polyolefin foams made with isopentane-based blowing agents A blowing agent blend for making polyolefin foams comprising isopentane and at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent having a boiling point less than 28° C., or a chemical co-blowing agent, or combinations thereof. T... | 05/16/2006 |
| 7026643 | Organic n-channel semiconductor device of N,N' 3,4,9,10 perylene tetracarboxylic diimide The invention provides a device comprising an improved n-channel semiconducting film. This film consists of a perylene tetracaboxylic acid diimide compound and was deposited onto substrates by vacuum sublimation. Thin film transistor devices comprising such films as... | 04/11/2006 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 04/04/2006 |
| 6994914 | Macrocyclic polyester oligomers and processes for polymerizing the same A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly... | 02/07/2006 |
| 6962968 | Purification of macrocyclic oligoesters Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ... | 11/08/2005 |
| 6960626 | Intimate physical mixtures containing macrocyclic polyester oligomer and filler The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler wi... | 11/01/2005 |
| 6953060 | Substrate with external member An apparatus comprising: (a) a substrate including a level intermediate region disposed between a first end region and a second end region; (b) a first external member disposed circumferentially around the first en... | 10/11/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6833226 | Electrophotographic apparatus, process cartridge and electrophotographic photosensitive member In an electrophotographic apparatus including an electrophotographic photosensitive member around which a charger, an exposure device, a developing device and a transfer device are provided in this order and not having any charge elimination device between the trans... | 12/21/2004 |
| 6720121 | Electrophotographic photoconductor and manufacturing method therefor An electrophotographic photoconductor and method of manufacturing thereof exhibits excellent characteristics of residual potential and repetition potential by containment of an additive of a compound. The electrophotographic photoconductor includes a conductive subs... | 04/13/2004 |
| 6696214 | Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same The invention provides an electrophotographic photoreceptor, in which suppression of image defects and high sensitivity are compatible, and a method for production thereof. The invention also provides a coating fluid for forming a photosensitive layer and... | 02/24/2004 |
| 6645687 | Imaging members A process comprising forming chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidinone (NMP) to provide a ClGaPc (NMP) Type I; separately dry milling and then wet treating the Type I product to form Type II ClGaPc (NMP); blending the ClGaPc Type I... | 11/11/2003 |
| 6632578 | Electrophotographic light-receiving member and process for its production A process for producing an electrophotographic light-receiving member having a conductive support and a light-receiving member having a photoconductive layer formed on the surface of the conductive support and composed of a non-single crystal material con... | 10/14/2003 |
| 6605400 | Electrophotographic photoreceptor An electrophotographic photoreceptor is disclosed. A surface layer of the photoreceptor comprises binder resin having silicon or fluorine atoms and dioxolan or a derivative thereof at 0.001 to 10 weight percent.... | 08/12/2003 |
| 6492080 | Process for tuning photoreceptor sensitivity A process including: forming a first chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidone (NMP) to form a ClGaPc (NMP) Type-I product; forming a second chlorogallium phthalocyanine in dimethyl sulfoxide (DMSO) to form a ClGaPc (DMSO) Type-I pro... | 12/10/2002 |
| 6489072 | Electrophotographic photoconductor and method for manufacturing same An electrophotographic photoconductor includes a conductive substrate and a photosensitive layer formed on a substrate. The photosensitive layer includes a phthalocyanine compound as a charge generation substance. An embodiment of the photosensitive layer... | 12/03/2002 |
| 6447965 | Electrophotographic photoreceptor containing TiOPc, method for manufacturing the same, and coating liquid for charge generating layer An electrophotographic photoreceptor highly sensitive to laser light, which is capable of forming an image without forming an interference fringe and a coating liquid for a charge generating layer for forming the same are provided, and the photoreceptor i... | 09/10/2002 |
| 6352809 | Process for producing electrophotographic photoreceptor, electrophotographic photoreceptor and image-forming apparatus A process for producing an electrophotographic photoreceptor, which includes contacting a solution containing at least one of optically functional organosilicon compounds represented by formula (I) F--[D--A]b (I) with a solid catalyst for reaction,... | 03/05/2002 |
| 6245475 | Process of spray forming photoreceptors with ink nozzles A method of forming one or more polymer containing layers on a substrate using ink jet nozzles. The method is particularly suited to forming one or more polymer containing layers of a photoreceptor. The polymer containing layers may be formed by moving a ... | 06/12/2001 |
| 6225016 | Photoconductor for electrophotography and a method of manufacturing the same A photoconductor for electrophotography includes a photosensitive film containing a bisazo charge generation agent described by structural formula (I) ##STR1## and from 100 nmol to 40 mmol, preferably from 500 nmol to 20 mmol, of a compound described... | 05/01/2001 |
| 6214513 | Slot coating under an electric field A coating process for the fabrication of organic photoreceptors employs an electrically conductive single slot die biased to allow an electric field between the die and the ground plane on the photoreceptor substrate. The homogenous coating dispersion is ... | 04/10/2001 |
| 6190812 | Single-layer type electrophotosensitive material and image forming apparatus using the same The present invention provides a single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the conductive substrate, wherein the photosensitive layer contains a phthalocyanine compound as an el... | 02/20/2001 |
| 6180309 | Organic photoreceptor with improved adhesion between coated layers A process for preparing an imaging member includes applying a first organic layer to an imaging member substrate, treating the first organic layer with one of corona discharge or plasma discharge; and applying a second organic layer to the first organic l... | 01/30/2001 |
| 6174637 | Electrophotographic imaging member and process of making A photo conducting imaging member has a charge generator layer including a binder containing at least a polycarbonate of formula (I): ##STR1##... | 01/16/2001 |
| 6040106 | Porous photoreceptor and method for manufacturing the same A method for manufacturing a photoreceptor includes the steps of consecutively forming a transparent conductive layer, a photoconductive layer, insulation layer and an electrode layer on a transparent support member, covering the electrode layer with a ph... | 03/21/2000 |
| 6027844 | Polymeric binders having saturated ring for improved performance of single layer positive organic photoconductor Composites comprising polymeric binders and phthalocyanine pigments to form a single layer positive organic photoconductor are provided for use in electrophotography. The polymeric binders comprise an aliphatic polymer or copolymer having a saturated ring... | 02/22/2000 |
