摘要:
A display device includes a liquid crystal capable of displaying a central region, a first peripheral region at the periphery of the central region, and a second peripheral region at the periphery of the central region and differing from the first peripheral region. A first electrode is connected to a region including the central region and first peripheral region of the liquid crystal. A second electrode is connected to a region including the central region and second peripheral region of the liquid crystal. The display regions of the liquid crystal are controlled by supplying driving signals to the first electrode and second electrode.
摘要:
A camera comprises a liquid-crystal display device and a liquid-crystal control section. The liquid-crystal display device has a liquid crystal whose transmittance is variable. The liquid-crystal control section, in the photograph enable mode, brings the liquid crystal of the liquid-crystal display device into the light-transmitting state and, in the photograph disable mode, brings the liquid crystal of the liquid-crystal display device into a half light-transmitting state or the no-light-transmitting state.
摘要:
A camera includes a liquid-crystal display device with a liquid crystal whose transmittance is variable. A liquid-crystal control section, in a release signal waiting mode, brings the liquid crystal of the liquid-crystal display device into the light-transmitting state and, when a release signal is output to turn on an exposure mode, lowers the transmittance of the liquid crystal of the liquid-crystal display device temporarily.
摘要:
The camera system comprises a camera and an external device. The camera includes a microcomputer, a write control circuit for receiving replacement data from the external device and writing the replacement data into a replacement program memory of the microcomputer, and an interface circuit for controlling a camera element in accordance with the decoded value output from an instruction decoder (ID) of the microcomputer. The external device includes a memory for storing address data to be changed in the microcomputer in the camera and replacement program data, and a transmission circuit for reading out the replacement data from the memory and transmitting the read-out data to the camera.
摘要:
An apparatus for recording data to a film, executing: both unchangeable recording such as optical recording, and changeable recording such as magnetic recording for relatively important data, which is required protection from data failure and is permitted to change such as date, date print mode, and trimming direction of printing area, and executing: only magnetic recording for relatively unimportant data, which is allowed some data failure and has few possibility of changing such as aperture value, shutter time value, photometric value, exposure compensation value, and object distance value; wherein the apparatus is housed in a detachable back cover of a camera, and data being transmitted from the main body of the camera to the back cover.
摘要:
Disclosed is a process for preparing a printed circuit board, which comprises the steps of:(1) forming, on the surface of an insulating substrate on a necessitate portion of which electrolessly plated copper is to be precipitated, a layer of a light-sensitive resin composition comprising (a) 40 to 80 parts by weight of a vinyl-polymerized high molecular weight binder having an acid value of 10 to 46 mgKOH/g, (b) 20 to 60 parts by weight of a compound having at least two polymerizable unsaturated double bonds in a molecule, with the total amount of Components (a) and (b) being 100 parts by weight, and (c) a photopolymerization initiator generating free radicals by irradiation of active light in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of Components (a) and (b);(2) forming a negative pattern of the light-sensitive resin composition on the surface of the substrate by irradiating active light imagewisely and developing with a semi-aqueous developing solution; and(3) forming a circuit pattern by electroless copper plating by using the negative pattern of the light-sensitive resin composition on the surface of the substrate as a plating resist.
摘要:
When an error is found in a program of the microcomputer, there are stored in a writable memory change address data of an address of a wrong instruction to be subjected to modification or insertion in the read-only memory, change instruction codes of modification or insertion for replacement of the wrong instruction, and a control code controlling a second program counter. When the contents of the program counter match the change address data stored in the writable memory, the program data in the writable memory is executed in place of the wrong instruction in the read-only memory according to the control code controlling the second program counter. Consequently, even when a bug is found in the program, a program replacement and/or insertion can be easily achieved and it is unnecessary to discard the final product on which the program is developed through a mask. Moreover, the program can be easily changed from an external device. This facilitates determining the cause of troubles occurring in the one-chip microcomputer incorporated in an electronic apparatus and hence improves reliability of the apparatus.
摘要:
An exposure control device for a camera having a shutter mechanism, a solenoid serving as an electromagnetic drive, a presser for pressing a solenoid plunger, and a control circuit for conduction control for the solenoid. After the solenoid attracts the plunger to open the shutter, conduction voltage for holding the plunger is controlled within a permissible range and become lower than the conduction voltage utilized for initially attracting the plunger. The heating of the solenoid is thus minimized. This control sequence prevents the breakdown of the solenoid and improved reliability in exposure control. Furthermore, power consumption in the camera is minimized.
摘要:
A machine part used as a magnet roll for developing and a process for producing the same. The machine part constitutes a member of a developing machine for an electrophotographic process such as a copier and facsimile, and a laser printer as well. The machine part comprises a shaft having a resin-bonded magnet layer provided on the outer periphery thereof. The composite molding of a resin-bonded magnet is produced by molding and establishing a composition for a thermoplastic resin-bonded magnet comprising from 35 to 60 % by volume of a thermoplastic resin and from 40 to 65 % by volume of a hard ferrite powder into a cylinder of uniform thickness on the outer periphery of a shaft, obtained is a thin resin-bonded magnet layer having a surface roughness of 5 .mu.m or less and free of seams which have generated during molding, the thin resin-bonded magnet layer further having provided on the surface a plurality of magnetic poles at a small spacing.
摘要:
A photosensitive resin composition comprising (A) a polymer obtained by reacting an isocyanate compound having an ethylenic unsaturated group with a polymer which is a reaction product of a tetracarboxylic acid dianhydride and a diamine, and (B) a photoinitiator, can provide a thick film excellent in heat resistant, adhesiveness, flexibility, electrical and mechanical properties, and is particularly suitable for producing a photosensitive element.