Abstract: Disclosed is a display control device which supplies the associated display screen with not only character information inputted by a user but also with the format information indicating the format situation around the current cursor position, so that a user can know the format situation of both the region where data are being entered and moreover the blank area where no character data have yet been entered, therefore advantageously making the display screen smaller relative to the sheet and the entire structure simpler.

Abstract: A cassette for an endless thermal ribbon utilized in a thermal printer with the ribbon being unwound from the inside diameter of a spool and rewound on the outside diameter of the spool. The ribbon is guided from the spool to effect an approximate 10 degree skew in its path past the thermal print head and then in contact with a ribbon drive roller prior to rewinding on the spool. A plurality of guide ribs are disposed in radial manner to guide and hold the ribbon in its winding and unwinding motion.

Abstract: An ink ribbon cartridge for a printer comprising a storage reel for an ink ribbon, a take-up reel for the ink ribbon, drive wheels for longitudinally advancing the ink ribbon from the storage reel to the take-up reel for printing on the ribbon, and a pulley or roller which rides on the cam and which is coupled to a further pulley or roller, these parts cooperating for transversely displacing the ribbon during its longitudinal advance to offset the area of the ribbon utilized in printing.

Abstract: A ribbon lift-up apparatus for selectively rotating a ribbon cartridge holder to the printing position or the correcting position uses a disc cam provided with various cam grooves for the printing operation and correcting operation, respectively. The disc cam includes a circular first cam groove for continuous printing operation. The first cam groove has a specified radius with the rotation axis of the disc cam as a center thereof. A second cam groove for single type printing operation is provided and a cam follower pin is positioned initially at a home position in this second cam groove. The second cam groove is in communication with the first cam groove. A third cam groove for a correcting operation is also provided. The follower pin will initially be at the home position of the second cam groove and will cross the first cam groove during the correcting operation. The third cam groove has a smaller radius than the specified radius of the first cam groove.

Abstract: In a printing apparatus wherein a reversible ribbon cassette is detachably installed, provided are means for indicating which side of the ribbon cassette is the side facing upward and means for detecting whether the side of the ribbon cassette attempted to be reloaded after once removed is the side facing upward or not based upon the indicating means. Thereby, misloading with the not-on-use side of ribbon cassette turned up is prevented and accordingly possibilities of blurred printing caused by use of already used area of the ribbon and/or of waste of the ribbon with remaining non-used portion thereon can be avoided. Further, even if the ribbon cassette installed in the apparatus is a multi-use-type one, the possibility of the printing quality being uneven due to the difference in number of times of use in places on the ribbon can also be prevented.

Abstract: A sheet setting device for a printer and the like including pressure rollers adapted to be brought into and out of engagement with a platen, and resist claws adapted to brought into and out of engagement with the platen in a position downstream of the position in which the pressure rollers are brought into and out of engagement with the platen. The device includes an operation lever and a linkage for linking the operation lever with the pressure rollers and the resist claws, the linkage being constructed such that as the operation lever is actuated, the resist claws are first brought into engagement with the platen and then the pressure rollers are moved away from the platen. By the aforesaid actuation of the operation lever, a lever having at its forward end paper ball rollers adapted to be brought into and out of engagement with the platen is moved through a cam in a manner to release the paper bail rollers from engagement with the platen.

Abstract: An electronic typewriter or a word processor with a spelling check function for speedier typing comprises a keyboard, a dictionary memory, a spelling checker, alarm means for issuing an alarm when the input word is determined to be incorrectly spelled, proper noun determination means for determining whether the input word is a proper noun and skip means for not activating the alarm means when the input word is determined to be a proper noun. The input word is determined to be a proper noun when the first letter is an upper case letter and the input word is not a first word in a sentence, or when the input word is composed of upper case letters and the preceding words are not composed of upper case letters.

Abstract: A plurality of switched voltage sources (10, 10', 10") apply charge to a sheet of paper (16) by way of respective sets of styli (12, 12', 12"). To print a dot when toner is subsequently applied to the paper, the voltage source (10) deposits charge on the paper (16) by applying a high voltage, and its voltage returns to ground when it is to avoid leaving a mark. In order to avoid the image degradation that results from the proximity of an unenergized stylus to an energized one, a zener diode (14) is interposed between the switched voltage source (10) and its respective styli (12). By virtue of stray capacitance (C.sub.s) between the styli (12) and ground, the potential of the styli does not return completely to ground when their respective voltage source is switched off. Instead, it returns only to the zener voltage, and this reduces the image degradation that the presence that the unenergized styli would otherwise cause.

Abstract: A printer with a main body having a printing head, motors, a plurality of circuits driving the printing head and the motors, a processor and a random access memory. The printer also includes a cartridge for containing memory devices for storing the data for at least one character font set and for storing the printing operation control program. A connector removably connects the cartridge mechanically and electrically to the main body of the printer. As a result, the print operation control program and character font set data can be selectively set by connecting an appropriate cartridge to the main body of the printer.

Abstract: A recording apparatus including a body having a case, a first feeding device, a guide portion, a second feeding device, and a cover. The first feeding device feeds a record sheet to a recording position by frictional force. The guide portion guides a continuous record sheet supplied from a record paper source disposed outside of the apparatus. The second feeding device accepts the record sheet from the guide portion and feeds the record sheet to the recording position through the first feeding device. The second feeding device includes at least one pin which is adapted to engage a hole in the record sheet. The cover has a free end including a guide for guiding a non-continuous record sheet from outside the apparatus to the recording position through the first feeding device. The cover further has an engagement portion on the opposite end of the cover from the guide, for rotatably attaching the cover to the case.

Abstract: A typewriter with variable color display visually presents typed text in a color variable in accordance with the typing speed and accuracy.

Abstract: An impact printer has a print ribbon that is divided into horizontal colored strips to enable color printing. A printhead is mounted on a moving carriage that moves across the width of a printing medium upon which the printing is to be deposited. The print ribbon also moves relative to the carriage. A ribbon shift mechanism is configured to include a print ribbon guide, the ribbon shift mechanism being slideably mounted in the carriage to move in a vertical direction relative thereto. A wire matrix printhead is connected to the carriage and has a printing end adjacent the print ribbon. A gear shaft is positioned to engage the gear sections of a pair of racks that are connected to the ribbon shift mechanism and which pass through the carriage. When the gear shaft is turned, the racks are engaged which cause the ribbon shift mechanism, and the print ribbon, to move either up or down thereby presenting a desired color to the printing end of the printhead.

Abstract: A thermal printing apparatus including a print station, a transport mechanism for positioning a record medium at the print station, an arcuately-shaped platen, a line of printing elements and a thermally responsive ribbon. Relative movement between the platen and the printing elements is effected from a pivot point. Printing in a variety of styles of fonts like E13B is possible on documents like checks or deposit slips, for example. Special spring and wire members facilitate the separation of the ribbon from the document after printing.

Abstract: A character erasable printing apparatus is designed to erase a character or an underline in plural times of erasing action by moving the printing head, and to print a character by a single printing action.Therefore, when an underlined character is erased together with its underline, and a correct character is printed together with an underline, the underline is interrupted.Disclosed are, to pervent such interruption of the underline, a character erasable printing apparatus capable of erasing only the character without erasing the underline when the underline mode is being set, a character erasable printing apparatus capable of erasing only the character without erasing the underline when erasing a character adjacent to an underlined character, and a character erasable printing apparatus capable of erasing the underline without moving the printing head when erasing an underline of a character adjacent to an underlined character.

Abstract: Disclosed is an electronic typewriter with a word correction function substantially consisting of a print data memory, a correction word memory, correction determination means, selection means and correction control means. If a correction word is too long to be printed in place of an erased wrong word, the selection means is driven to select a least number of neighboring words to be erased. The correction control means controls the pitch of the correction word and its adjacent spaces before and after the word. Since the correction range can be extended to the right and left margins, a relatively long word can be automatically substituted for the erased wrong word.

Abstract: A printing apparatus and a paper controlling method for a printer in which, upon activating a power source or upon changing over to the on-line mode or upon switching to a high paper feed speed, a paper feed motor is rotated first reversely to draw back paper by an amount a little greater than an amount of a possible slack and then forwardly to advance the paper. Accordingly, paper slack can be cancelled adjacent a print head in preparation for subsequent printing. Accordingly, high quality printing can be attained.

Abstract: Several line drawing devices to permit drawing horizontal and vertical lines on typewriters are known. The fact that they are rarely encountered in practice, should be sufficient proof that they were not found to be satisfactory and greatly impede the typing process. These drawbacks are overcome by the invention in that the ribbon cassette is provided with a receptacle for a colored writing implement which, in one end position, resiliently rests on the record carrier so as to produce drawn lines and is arranged to be movable and arrestable in another end position to put it out of operation. A significant advantage resides in the fact that the colored writing implement can here be attached to the cassette at a location where the typing process is not interfered with. The colored writing implement can easily be exchanged by removing the ribbon cassette. The ribbon cassette together with the colored writing implement permits easy production of drawn lines in the horizontal, vertical or any other direction.

Abstract: A printer having a ribbon lift mechanism for lifting a ribbon from a rest position to a printing position. The printer operates in two different modes, that is, a printer mode in which characters are printed according to the data in a memory and a typewriter mode in which characters are printed according to the data from a keyboard. The ribbon is returned from the printing position to the rest position when no subsequent data comes from the memory within a first preset time interval in the printer mode or when no subsequent data comes from the keyboard within a second preset time interval in the typewriter mode. The second time interval is preset shorter than the first time inteval in order to print successively in the printer mode and to put back the ribbon to the rest position quickly when an operator needs to check the print on a printing paper in the typewriter mode.

Abstract: An output apparatus includes input apparatus for inputting at least space information and character information; a memory for storing output data corresponding to the input information to be output; an additional information memory for storing additional information, such as underline information, to be added to the output data; a distinction unit for determining whether or not the memory stores the output data when space data is input; and a unit for inhibiting a readout operation of the data output from the additional information memory when the distinction unit determines that the output data is not stored in the memory.

Abstract: The ribbon (17) has an external run between the type element (25) and platen of a daisy-wheel typewriter. This run stretches between terminal members (59) which protrude from side arms (33 and 34) of the cartridge casing (18) and are fixed to the distal ends of arms (39, 41) pivotally mounted in the casing (18) at pivot (52). Ribbon lift levers of the typewriter raise the arms simultaneously to position a selected one of three tracks on the ribbon at the level of the typing. The ribbon is transferred from a feed spool having a flange to a take-up spool having a core tube and which are rotatably supported by the casing. The casing comprises a bottom portion having a resilient tongue with a pawl member positioned adjacent to the take-up spool and a resilient blade adjacent to the feed spool.