Abstract: In a recording apparatus including a feed knob for manually feeding a recording sheet, a torque limiter is provided for preventing transmission of a torque more than a predetermined value from the feed knob to a recording sheet feeding portion.

Abstract: The present invention is an impact print bar assembly (10) adapted for installation in a typewriter, character printer or other device adapted for linear application of printed characters to sheet material. The assembly (10) includes an impact print bar (12) which is adapted to be held within a bar holder (14) in any of four different orientations, each of the orientations presenting a different print surface. The impact print bar (12) provides a solid, non-rotating, surface for the sheet material to reast against during printing. The impact print bar (12) includes a central support rod (28) having a resilient, usually plastic, body (36) formed thereabout. The degree of hardness of the body (36) may be varied, depending on the application desired. The support rod (38) has a square cross-section such that it will fit into the hollow frame (52) of the bar holder (15) in any of the four orientations.

Abstract: An impact type color printer is provided a control circuit which produces a random digit signal each time the printer is connected to a power supply, according to which random digit signal a platen is rotated so that one of plural impact sections axially arranged in each ink saturated member of different color is selected at random and positioned just opposite to a printing head to be subjected to impact thereby for printing operation.

Abstract: A dot matrix impact printer for color printing comprising a platen and a print wire. The platen comprises a plurality of members made of porous material containing different colors. The print wire and platen member are driven to a position adjacent each other and the print wire is moved to force a paper to the platen, so that a dot is printed on the paper with color ink contained in the corresponding member of the platen.

Abstract: The continuous type belt is arranged round two rollers, one of which is driven. One straight section of the type belt contacts over its entire length the support designed as a platen.In order to avoid groove on the platen caused by the rotating type belt, and to achieve a distribution of other kinds of wear of the platen over its circumference, a gear motor causes the platen to rotate very slowly (approximately 1 revolution in 72 hours).The platen can also be rotated without a gear motor. For this purpose, the longitudinal axis of the platen is slightly inclined relative to the edge of the type belt. This inclination effects a small movement component in the direction of the platen circumference while the type belt slides along the lateral surface of the platen, said component causing a slow revolution of the platen.