摘要:
A printing apparatus has a motor, a character drum rotated by the rotational force of the motor, a printing paper feed mechanism operable by the rotational force of the motor, and a mechanism for shifting hammers and a stain preventing member integral with said mechanism and shiftable by the rotational force of the motor. The stain preventing member has shielded portions at every other column.
摘要:
The apparatus of the present invention is provided with a stain preventing element provided between a print drum and a hammer and adapted to shield alternate digits to be printed, said stain preventing element being shiftable in the transverse or advancing direction of print sheet. Said hammer is an intermediate hammer which is set to a predetermined initial position from an unsteady position upon the turning on of the power supply, and simultaneously necessary preparations such as paper feeding and ink application onto the print drum prior to the printing are performed. Also there is provided a stain preventing mechanism for multi-color printing, and the above-mentioned stain preventing member is provided with a means for preventing ink diffusion. Also the paper feed plunger etc. is structured similar to the said hammer thereby rendering the entire apparatus smaller and more compact.
摘要:
An ink ribbon cassette has a case housing an ink ribbon inside. Holes for receiving positioning members are formed at the two ends of a front portion of the case, and an engaging member is formed at the center of a rear portion of the case. One of the positioning members also serves as an ink ribbon end detector. A printing apparatus for printing using such an ink ribbon cassette has a carriage, projections and a spring. Thus, the slackening of the ink ribbon will not occur in the printing mode.
摘要:
A recording head having plural recording elements, a printed circuit board connected to the plural recording elements for power supply thereto, a serial-in-parallel-out driver circuit provided on the printed circuit board for converting the signals to the recording elements into parallel signals, and electrodes provided on the printed circuit board for connection with an external connector.
摘要:
A printing apparatus of the type in which character wheels of respective columns are independently rotatably juxtaposed and the character wheel of each column is individually rotation-controlled to select a desired one of characters on the outer periphery of the character wheel at a print position, characterized in that the apparatus is compact and light in weight.
摘要:
A thermal transfer printer comprising means for identifying space data present between character data in a print data string. When a space portion is detected by the space identifier, the thermal head is moved apart from the platen of the printer and the ink ribbon feed is stopped thereby preventing the waste of the ink ribbon by the space portion in a line.
摘要:
A platen support structure of a thermal transfer printer, for example, has a platen holder holding a platen, a frame supporting two ends of the platen holder, and an indexing mechanism for pivotally supporting the platen holder. The platen holder is curved in the inoperative mode of the printer and is flexed linearly in the operative mode. Clear printing can be performed without irregular line feed.
摘要:
A thermal transfer printer includes a thermal head having plural heat generating elements, a thermal head driver connected to a character generator for controlling the thermal head by supplying drive currents to the heat generating elements of the thermal head in response to print information, and control circuit for controlling the drive currents from the thermal head driver in response to the ambient temperature. Therefore, the thermal transfer printer is capable of constantly providing an optimum transfer density regardless of the ambient temperature, thus ensuring a satisfactory print quality.
摘要:
This invention provides a printer capable of regulating the displacement of printing head according to the kind of characters to be printed. The printer has a printing head, an identifying device for identifying the print size of the printing head, and a drive mechanism for driving the printing head according to the print size identified by the identifying device.
摘要:
A dot matrix printer comprises a head comprising a plurality of printing elements, a motor for moving the head, an oscillation source for supplying pulses for driving the motor, and varying means for varying the spacing between dots printed by the head at an integer ratio corresponding to the driving pulses put out from the oscillation source.