Abstract: A laser scanning optical system includes a light source, a polygonal mirror for deflecting a light beam emitted by the light source, and a scanning lens system for guiding the light beam deflectively reflected by the polygonal mirror to a surface to be scanned. The scanning lens system has a spherical lens, and a toric lens which is formed of a plastic material having a positive refractive power in both main scanning and sub-scanning directions. At least one surface of the toric lens has an aspherical shape which is substantially perpendicular to a light beam, which has been transmitted through the spherical lens, in a main scanning section.

Abstract: A toner for developing an electrostatic image has toner particles containing at least a binder resin and a colorant, and an inorganic fine powder. The inorganic fine powder has been treated with a silicone oil having, in its molecular weight distribution as measured by gel permeation chromatography, at least one peak value in the region of molecular weight of from 500 to 15,000 and having at least one peak value or shoulder in the region of molecular weight of from 3,000 to 100,000 at a value greater than the former peak value.

Abstract: 3,3-Dimethylbutyraldehyde is synthesized via hydrolysis of 1,1-dichloro-3,3-dimethylbutane or 1-bromo-1-chloro-3,3-dimethylbutane in the presence of water and a base and is purified via an aldehyde/bisulfite adduct.

Abstract: An image processing apparatus having an input means which inputs coded image data for a plurality of frames, with the coded image data being coded by intraframe and interframe coding. A decoder decodes the coded image, and skips decoding of the decoded image data in units of frames when the decoding is not performed at a predetermined timing, and performs decoding of intraframe coded image data following a skipped frame.

Abstract: A data communication apparatus automatically sets a signal send condition in accordance with an actual communication status. If the data communication apparatus accommodates a plurality of lines, a call is made from a first line to a second line and a predetermined signal is sent from the first line to the second line, and based on the received information, a signal send condition contained therein is determined and registered.

Abstract: A server is connected to an Ethernet port via a network and is further connected to a copier via video interface ports. The server is capable of subjecting image data read in by the copier or obtained from the network to processing for character recognition, coding and translation by a character recognition circuit, image coding/decoding circuit and translating circuit. Furthermore, image data is capable of being generated by a page-description-language interpreter based upon data, which is in the format of page description language, received from the network. Conversely, a character in the image data is capable of being recognized, coded and converted into page description language so that the amount of data sent to the network can be reduced.

Abstract: An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a hindered phenol compound and a fluorene compound represented by the following formula (1): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently substituted or unsubstituted aryl, and R.sub.5 and R.sub.6 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl.

Abstract: There is provided an image processing apparatus for executing a process to an input image in accordance with the characteristics thereof, comprising: an input device to input image data; a detector to detect the characteristics of the input image; and a processor to execute first and second processes such as brightness correcting processes or color balance correcting processes for the input image data on the basis of weights corresponding to the characteristics of the input image. When the weight of the first process is large, the weight of the second process is set to a small value. As the characteristics of the input image are deviated from a predetermined condition, the processor sets the weight of the first process to a small value and sets the weight of the second process to a large value. With the apparatus, the brightness and the color balance of the input image are preferably corrected and a natural image can be output irrespective of the characteristics of the image reading apparatus.

Abstract: An image processing apparatus which enables three-dimensional modeling and a full variety of computer graphic animation. For this purpose, the apparatus inputs three-dimensional data of a plurality of objects, and independently sets texture animation state values and change amounts for the respective objects. As texture animation is started, display of each object changes in a real-time manner from the initial display state in accordance with a change amount.

Abstract: An information processing apparatus for processing document information including image information has a printer, a line number register, registers for storing format information for each line displayed on a screen of a CRT display, and a processing section for retrieving the format information corresponding to a portion of document information at which the cursor is currently located and for allowing the display to display the document information together with the format information.