Abstract: A camera capable of imprinting data in which data imprinting means is provided in a control circuit for controlling photographing and power consumption is reduced by appropriately changing intervals for driving a central processing unit (CPU) in accordance to data to be imprinted.A drive signal outputting means 7 is included in the control circuit 1 for controlling photographing and a first drive signal is output from a short time counting means 5 at intervals of one minute and a second drive signal is output from a long time counting means 6 at intervals of 10 minutes, respectively, to a drive signal detecting means 8. When data imprinting mode is set up in a time mode (indicating in unit of minute), the CPU 9 is driven by the first drive signal and time data in a memory 9d is added up at intervals of one minute. When a date mode (indicating in unit of day) is set up, the CPU 9 is driven by the second drive signal and the time data is added up at intervals of 10 minutes.

Abstract: In order to enable the determination of a center precisely and automatically, a reference mark on a printed circuit board is image-recognized to determine tone transition points, thereby to determine an interim center and diameter of the mark by a four-points searching method. Next, a preset minute value .alpha. is added to the interim mark diameter to determine a standard circle diameter, thereby to set a standard circle having the interim center as its center. Then, image processing is performed in that standard circle and the mark is separated into a plurality of sections. The center of the mark is detected by determining the center of the section of the tone indicating the mark. Machining operations such as the perforations are carried out on the basis of the detected center.

Abstract: A serial printer comprises a printing head, a carrier for carrying the printing head, a platen, and a pair of guide members extending in parallel with the platen for supporting the carrier in a movable manner. An openable member is attached openably to the casing of the printer and supporting one of the guide members. Engaging receivers are formed in the carrier for allowing the one guide member to engage therewith and disengage therefrom in a direction substantially perpendicular to the extending direction of the one guide member. Engaging brackets may be mounted on the printing head for coming into and out of engagement with one of the guide members at a right angle with respect to the extending direction of the one guide member. Moving members may be supported movably in the casing of the printer for supporting the one guide member, when moved, to bring the one guide member into and out of an engagement with the engaging brackets.

Abstract: A method for approximately representing a first curve having anchor points and a control point, wherein the first curve is subdivided into a plurality of segments and an approximate curve is constructed by joining the points corresponding to the ends of the segments with straight lines. The number of segments is determined by sequentially subdividing the first curve until sum of the lengths of lines joining the anchor points and control points is less than a predetermined value.

Abstract: A dot printer includes: a platen and a printing head encased in a printer case in the vertical direction; a paper housing portion provided laterally of the platen; a feed roller disposed laterally of the printing head for feeding a paper taken out of a paper housing portion to the printing head; and a discharge roller disposed laterally of the printing head for discharging the paper outside of the case. With this construction, the printer can be made thin and can also be miniaturized.

Abstract: A motor driven shutter has diaphragm blades and shutter blades controlled by a single motor. The shutter comprises a driving member actuated by the motor, a diaphragm member for setting the diaphragm blades to a predetermined position via the driving member by the forward rotation of the motor, a closing member for operating the diaphragm blades to a closed position, and shutter blades urged in an open direction. The driving member sets the diaphragm blades to a predetermined position and further releases the shutter blades upon motor rotation in the reverse direction in a diaphragm setting process. The driving member closes the diaphragm blades by releasing the engagement of the closing member in the succeeding operation of the motor.

Abstract: In a step-up circuit for causing the emission of light of a distance measuring light emitting element, the step-up circuit outputs a step-up voltage from one terminal of a step-up capacitor. A step-up voltage level changeover circuit applies a step-up voltage to the capacitor every time the distance measuring light emitting element emits light that is higher than the step-up voltage in the normal state. The number of parts is reduced by eliminating a separate capacitor for light emission, the space for the circuit is reduced by using the capacitor having a small capacity, the soldering steps for fabrication of the circuit are automated; and the costs for assembly are ameliorated owing to the automation.

Abstract: A photosensitive glass processing method, and article made thereby, which makes it possible to facilitate the etch depth control, minimize the surface roughness of the etched surface, improve the operating efficiency in single-side etching process, and increase the yield includes a first exposure step, in which laser light is applied to the obverse side of photosensitive glass from above it through an exposure mask by using a pulsed laser that covers the sensitivity wavelength range of the photosensitive glass, thereby forming a first exposed portion, the energy intensity per pulse of laser light being set at 10 mJ/cm.sup.2, and the total exposure energy being set at 500 mJ/cm.sup.2 ; a second exposure step, in which laser light is applied to an end surface of the photosensitive glass through another exposure mask, thereby forming a second exposed portion, the energy intensity per pulse of laser light being set at 10 mJ/cm.sup.2, and the total exposure energy being set at 15,000 mJ/cm.sup.

Abstract: An image forming apparatus which enables resolution modes to be readily changed over has a light-emitting element for irradiating a polygonal mirror with a light beam and a controller for controlling the light-emitting element. The controller is connected to an image clock signal changeover circuit that changes the period of an image clock signal to a period which is n (a positive integer) times the former. The controller is arranged such that the image recording density in the horizontal scanning direction can be changed by the image clock signal changeover circuit and/or the controller judges the pulses of a horizontal synchronizing signal output from a photosensor to be valid at intervals of (n-1) pulses, thereby enabling control of the recording density in the vertical scanning direction.

Abstract: A desk top cleaner for cleaning dust from the top of a table includes a crankshaft rotatably supported in a frame. A broom is formed with an elongated slot to engage with the crankshaft and has its upper end portion fitted in a supporting portion formed in the frame and its lower end portion equipped with a brush. A drive mechanism is provided for transmitting a rotating force from a drive source to the crankshaft. A dust case for accommodating the dust swept by the broom is included in the frame.