Abstract: A document processing apparatus has a control section. The control section determines that at least some of a plurality of colors contained in input document data are a determined color group, determines at least one set of confusion colors of the colors contained in the determined color group based on confusion color information defined in association with color blindness of a human being in a predetermined color component space, and performs predetermined process for portions of the colors contained in the determined confusion color set, in the input document data.

Abstract: A Hough transform unit executes Hough transform to HIGH pixels of outline binary image data inputted thereto, and stores the calculation result in a Hough space data storage. A Hough space data calculating/projecting unit sequentially reads out data stored in the Hough space data storage, executes a specific calculation, and thereafter stores the calculation result sequentially in a calculated projection data storage. An angle detector sequentially reads out calculated frequency data stored in the calculated projection data storage, calculates the maximal value of the data read out, and detects an angle that gives the maximal value as the skew angle. The image processing device, being thus configured, allows detecting and correcting the skew angle with high accuracy, even when the input image contains image elements such as photograph images and dot images.

Abstract: A releasing film (C) comprising a polyester film (A) and a cured silicone resin layer (B) formed on at least one side of the polyester film (A), characterized in that (1) the film (A) is a biaxially oriented film formed of polyethylene-2,6-naphthalenedicarboxylate and has a surface center line average roughness (Ra) of 50 nm or less and (2) the releasing film (C) has a dimensional change of 0.2% or less under a stress of 150 gf/mm2 at 120° C.; and a releasing film (C) comprising a primer layer (D) having a SiO bond, between said film (A) and said cured silicone resin layer (B). The releasing film of the present invention is excellent in heat resistance, surface properties and gas barrier properties, and has small dimensional change rate.

Abstract: A releasing film (C) comprising a polyester film (A) and a cured silicone resin layer (B) formed on at least one side of the polyester film (A), characterized in that (1) the film (A) is a biaxially oriented film formed of polyethylene-2,6-naphthalenedicarboxylate and has a surface center line average roughness (Ra) of 50 nm or less and (2) the releasing film (C) has a dimensional change of 0.2% or less under a stress of 150 gf/mm.sup.2 at 120.degree. C.; and a releasing film (C) comprising a primer layer (D) having a SiO bond, between said film (A) and said cured silicone resin layer (B). The releasing film of the present invention is excellent in heat resistance, surface properties and gas barrier properties, and has small dimensional change rate.

Abstract: An image resolution conversion method converting an image of a first resolution represented by multivalued digital data into an image of a second resolution by interpolation, comprises the steps of assigning a block defined by a plurality of pre-conversion pixels of the first resolution image to each post-conversion pixel, performing edge detection in the block based on data for each pixel of the block, and performing resolution conversion by a first interpolation method when at least the result of the edge detection satisfies predetermined conditions, and performing resolution conversion by a second interpolation method when the result of the edge detection does not satisfy the predetermined conditions.

Abstract: An image recording apparatus for setting an edit region by preliminary scanning of an original and recording an edited image by main scanning of the original includes a designation input device; a bit map memory; an edit information processing device; an image processing device; a recording device; and a control device. The image recording apparatus permits the same edited image data that is used for a test record to be used for a final record.

Abstract: A polyester film having on at least one side, a primer layer comprising a crosslinked product between (a) a polyurethane having (0.22-33).times.10.sup.-4 gram equivalent/gram of resin, of at least one functional group selected from a carboxyl group and a salt group derived therefrom and (b) a polyepoxy compound, said crosslinked product containing (c) an antistatic agent composed mainly of a compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group of 4-20 carbon atoms, and M.sub.1 and M.sub.2 each represent an alkali metal ion, an ammonium group or a tertiary amino group, as well as a process for producing said film. The film is useful as a base material for highly processed polyester film products such as magnetic tape, floppy disc, X-ray photographic film, telephone card, OHP, base for printing plate and the like.

Abstract: A liquid crystal emulsion composition usable for forming a polymer dispersed type liquid crystal membrane free from undesirable bubbles, by a printing method, comprises 100 parts by weight of a liquid crystal material, 10 to 100 parts by weight of a saponification product of a polyvinyl acetate resin, 1 to 30 parts by weight of an aliphatic alcohol having 3 to 8 carbon atoms and 50 to 1,000 parts by weight of water.