Abstract:
A printing mode setting portion outputs energizing time data corresponding to a selected printing mode when selecting the printing mode according to operation of the operation unit. Based on the energizing time data, the energizing time period of a head energizing signal which is output from a head driving portion to a driving coil of a dot printer head is controlled by the energizing time control portion 6. When printing mode having a high dot density is selected, printing energy is reduced and the energizing time period is refined for the driving coil 8, thus making it made possible to lower the noise level.
Abstract:
A memory device includes a reset signal generator for generating a reset signal when the output voltage from a main power supply circuit to supply a driving voltage to a memory decreases to a first predetermined voltage, and a switching circuit for allowing a data holding voltage from a backup power supply to be supplied to the memory in place of the driving voltage from the main power supply circuit in response to the reset signal. This memory device further includes a comparator for generating an inhibiting signal when it detects that the data holding voltage from the backup power supply following generation of the reset signal is lower than the voltage necessary to hold the data in the memory, and a control circuit for setting the memory into an operation inhibition state when it detects that the inhibiting signal was generated from the comparator following the reset signal.
Abstract:
A dot character display apparatus includes a control circuit for transferring data corresponding to character body and upper and lower symbols from first to third character generators to image buffers, a drive circuit for driving a dot matrix display section on the basis of the data stored in the image buffers. The dot matrix display section has an upper display area to display the upper symbol, a central display area to display the charcter body, and a lower display area to display the lower symbol. The drive circuit has a first drive section to drive the central display area of the dot matrix display section in accordance with data indicative of the character body from the first character generator, and a secod drive section to drive the upper and lower display areas of the dot matrix display section in accordance with data representative of the upper and lower symbols from the second and third character generators.
Abstract:
A beauty instrument capable of imparting a massaging effect to skin. A beauty instrument is configured such that a pair of balls is supported at the tip of a handle. The balls are positioned at a distance from each another, and are capable of rotating around respective axes thereof.
Abstract:
The present invention provides a method which can produce ε-caprolactam with a good selectivity by reacting cyclohexanone oxime with a good conversion in a vapor phase Beckmann rearrangement reaction. Disclosed is a method for producing ε-caprolactam, which comprises performing a vapor phase Beckmann rearrangement reaction of cyclohexanone oxime in the presence of a pentasil type zeolite, wherein the pentasil type zeolite is a zeolite obtained by subjecting a mixture containing a silicon compound, water, and a compound represented by formula (I): [(R1)3N+—(CH2)m—N+(R1)2—(CH2)m—N+(R1)3]·3/n (A) (I) wherein R1 represents an alkyl group having 1 to 4 carbon atoms, A represents an n-valent anion, m represents an integer of 5 to 7, and n represents an integer of 1 to 3, to a hydrothermal synthesis reaction.
Abstract:
Grounding terminals of a memory unit are disposed at the opposite ends of an array of signal terminals of the memory unit, respectively, reception grounding terminals of a connector are disposed at the opposite ends of any array of reception signal terminals of the connector, respectively, the grounding terminals of the memory unit are connected to the reception grounding terminals of the connector, respectively, before the signal terminals of the memory unit are connected to the reception signal terminals of the connector in inserting the memory unit in the connector. Upon the insertion of the memory unit in the connector, the static electricity accumulate in the memory unit is discharged surely to a ground without affecting the semiconductor memory of the memory unit through the signal terminals and the reception signal terminals.
Abstract:
A stepping motor driving circuit includes a plurality of switching transistors having their emitter-collector paths connected to the corresponding ends of motor coils, a plurality of diodes having their anodes connected to the above-mentioned ends of the motor coils and their cathodes connected to a common terminal, and a braking circuit connected between the cathode of the diodes and the other end of the motor coils, in which the switching transistors are sequentially turned ON to permit excitation currents to pass through the corresponding motor coils. The braking circuit has a variable effective impedance.