Abstract: A print device includes a tape mounting portion, a tape print portion, a tape discharge portion, a tube mounting portion, a ribbon mounting portion, a tube print portion, and a tube discharge portion. The tape mounting portion is configured such that a tape is detachably mounted in the tape mounting portion. The tube mounting portion is configured such that a tube is detachably mounted in the tube mounting portion along a predetermined direction. The ribbon mounting portion is configured such that an ink ribbon is detachably mounted in the ribbon mounting portion. The tape mounting portion and the ribbon mounting portion are disposed on a same side with respect to the tube mounting portion, and are disposed side by side along the predetermined direction.

Abstract: An imaging apparatus includes a motor including a motor shaft to which a pinion gear is attached, and a feed roller including a shaft. The feed roller is positioned upstream from the print zone in relation to the sheet feed direction. A primary gear train includes a first gear in mesh with the pinion gear and a second gear rigidly mounted to the shaft of the feed roller. A spring coupling has a first end connected to the second gear of the primary gear train. A secondary gear train includes a third gear in mesh with the pinion gear and a fourth gear rotatably mounted to the shaft of the feed roller for free rotation with respect to the shaft, the second end of the spring coupling being connected to the fourth gear of the secondary gear train.

Abstract: The present invention provides a sheet conveying apparatus for conveying a sheet comprising a convey member for applying a conveying force to a sheet, a drive source for driving the convey member, and a drive transmitting means for transmitting a drive force from a first drive transmitting member attached to the drive source to a second drive transmitting member attached to the convey member through one or more speed reduction members stepwisely. Among the first drive transmitting member, second drive transmitting member and speed reduction members, manufacturing accuracy of the speed reduction member disposed at a front stage of the second drive transmitting member is greater than manufacturing accuracies of the other members.

Abstract: An image recording apparatus has a first recording-sheet storing section for storing a first recording sheet, a second recording-sheet storing section for storing a second recording sheet, a serial recording head for effecting image recording on the first recording sheet while travelling with respect to the first recording sheet, a line recording head for effecting image recording on the second recording sheet when the second recording sheet is in a stationary state, a first conveying device for conveying the first recording sheet to the position of the serial recording head; and the second conveying device for conveying the second recording sheet to the position of the line recording head. With this arrangement, it is possible to selectively effect serial recording and line recording and, in addition, to effect recording from an original document as well as recording and reproduction of the thus-read original document.

Abstract: A thermal printer carries out printing operations to produce images in multiple colors in response to a printing program. In order to eliminate distortions and to insure registration of colors in the printed image, a printer controller eliminates backlash in the drive mechanism at the beginning of each printing operation.

Abstract: A backlash control system for a printer medium drive system having a motor-driven gear train for driving medium-engaging rollers. Pinion gears mounted on the motor drive shaft mesh with a main gear and a tension gear, mounted in turn on a main drive and a tension roller. An anti-backlash spring device includes pinch fingers which exert a pinch force on the main and tension gears. The pinch fingers are mounted at ends of a horizontal spring beam secured at an intermediate pivot point. As the motor turns to drive the print medium forward, the pinch force results in bowing of the horizontal beam, tending to exert a restoring force on the main and tension gears. As the motor direction is reversed and stopped, the restoring force results in the main and tension gears being pulled backwards to keep the gear teeth meshed tightly to the pinion gear teeth. The pinch fingers also exert a thrust load axially against the main drive and tension gears.

Abstract: A printing apparatus including a paper guide, provided on a frame for guiding recording paper; a platen pivotally supported by the frame; a paper feeding roller rotatably provided in the frame; and a printing driving section reciprocally moving with respect to the recording paper on the platen for performing printing, and a cam rack in engagement with the paper feeding roller for intermittently rotating the paper feeding roller. The cam rack has a projection to be engaged with the paper feeding roller for stopping the rotation of the paper feeding roller.

Abstract: There is described a printing apparatus in which line feed is achieved by rotating a platen with a paper advancing motor and the printing is conducted while the platen is stopped by the paper advancing motor. The printer is further provided with a detent mechanism for stopping the platen at the interval of a determined angle, and a solenoid for deactivating the function of the detent mechanism.

Abstract: A strip provided adjacent the edges thereof with perforations is driven forwards during a printing operation by the cooperating printing and counter-pressure cylinders of an offset mechanism, and by two pairs of pin tractors, pins of which enter the somewhat larger perforations. When the cylinders release the strip, same is moved backwards by the pin tractors over a distance equal to the difference between the forward displacement and the length of a form. To position the strip before a new printing operation, those pins going through the perforations of the pin tractors are moved a little forwards until they lie anew frontwards in the perforations.

Abstract: In a carriage driving system of a printing apparatus, due to play between gears and elongation of a wire or belt, a positional error is produced in the stop position of a carriage when the carriage is moved in the backspacing direction. Then, in the conventional printing apparatus, the carriage is backspaced while the error is regulated every time data is inputted in the centering mode or the right margin flash mode, but this increases the number of times of movement of the carriage, and therefore extra vibration and noise are generated. Disclosed is a printing apparatus comprising a regulating means for controlling a printing means to regulate a positional deviation in response to a print start command signal in a specified mode such as a centering mode and a right margin flash mode.

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: A thermal printer using a single pulse motor is disclosed. This thermal printer comprises: a single pulse motor; a moving member which is moved in accordance with the drive of the pulse motor; a head raising and lowering mechanism and a sheet feed mechanism which are selectively actuated in correspondence with the movement of the moving member; and a carriage moving mechanism which is interlockingly driven by the pulse motor. These components are driven by the single pulse motor. Also, the moving member may be a rack.

Abstract: In a governor device for a printer including a driving wheel rotating for a predetermined amount by means of urging force by a urging spring to feed paper and engaging with a stopper to stop at this position and a governor gear train consisting of a speed-up gear engaged with the driving wheel and a fly wheel to perform the governing action. The governor device for a printer further includes a wind-up gear engaging with the driving wheel and a friction slip device attached to the fly wheel in the governor gear train to absorb the bounce when the driving wheel stops.

Abstract: A mechanical torque transmitting apparatus such as a one-way clutch which includes two distinct sets of flexural arms (primary and auxiliary) and a cylindrical engagement surface. The primary flexural arm is adapted to be in edgewise continuous engagement with the cylindrical surface. Preferably, the primary flexural arm has a long, straight, narrow cross-section area and applies a relatively low force against the cylindrical surface when said surface is rotating in a free-wheeling direction. In the non free-wheeling direction, the force against the cylindrical surface increases until the rotational forces overcome and buckle the primary flexural arm whereupon the auxiliary flexural arm is brought into contact with the cylindrical surface to resist further rotation.

Abstract: A linespacing apparatus includes a slip clutch assembly which is driven by an electric motor. The slip clutch assembly includes a face cam which drives a linkage which, in turn, indexes a platen in order to linespace the platen. The face cam includes an abutment portion which abruptly halts the motion of the linkage and the slip clutch assembly prevents bounce or recoil of the linkage thereby promoting smooth operation of the apparatus. The linkage may be adjusted by an operator to vary the amount of rotation of the platen during each operating stroke of the linkage.

Abstract: An intermittent paper feed mechanism comprises a driving wheel rotationally driven in an intermittent manner, a driven wheel disposed opposite to and rotated by the driving wheel, a stopper means for restricting the angle of rotation of the driving wheel and a coiled return spring for biasing the driving wheel in a direction opposite to its rotational driven direction. The driving and driven wheels, the stopper means and the return spring are coaxially mounted on a common shaft. The device of the invention enables a paper on which characters are printed by a printing head to be advanced at a high accuracy in an intermittent manner without using a stepping pulse motor.

Abstract: A powered gear driven paper insert and line feed mechanism capable of rotating a platen through one half line spacing increments and which is both power operated and disconnectable for manual operation is disclosed. The platen of the typewriter or printer may be manually rotated using platen or may be electronically rotated by energizing the control magnet, thus engaging the clutch assembly to connect the drive motor to the platen. The clutching assembly is such that two separate clutches are operable to disconnect the platen and gear train from the overall clutch apparatus and also to disconnect the drive motor belt and other related hardware which is driven by the drive motor and belt.

Abstract: A paper feed assembly for a printer which permits manual paper advance includes a pair of rotatable rollers for advancing a print paper therebetween, a paper feed gear mounted on one roller and a drive gear alternately operatively engaged with the paper feed gear. The drive gear includes a paper feed portion for incrementally rotating the paper feed gear for advance of the print paper and a drive portion for effecting proper alignment of the paper feed gear and drive gear prior to paper advancement.

Abstract: A printer includes a paper transport cylinder which is intermittently driven by a motor to automatically advance the paper by one line each time a line has been printed. In order to advance the paper before printing begins a manually actuable key is provided which, when depressed, couples the transport cylinder to the motor and actuates the motor. The transport cylinder is rotated while the key is depressed to rapidly advance the paper.