Abstract:
A gauge for determining the position of a workpiece within a fitting. The gauge comprises a body portion having a reference plane, a wall spaced from the reference plane and a fitting-receiving assembly. A shaft receiving bore is provided in the body portion which extends inwardly from the reference plane to receive at least some of the fitting-receiving assembly. The fitting-receiving assembly has a fitting-receiving portion extending outwardly from the reference plane for receiving a fitting thereon. The fitting-receiving portion has an end spaced from the reference plane and is mounted for reciprocal movement within the shaft-receiving bore relative to the reference plane. A stop assembly is provided which is operatively associated with the fitting-receiving portion and is movable therewith. The stop assembly has stop means spaced inwardly from the end on the fitting-receiving portion. A marking bore is provided in the body portion which extends inwardly for the wall. The marking bore is adapted to receive a workpiece and marking means are provided in the body portion for marking the position of the workpiece within the marking bore.
Abstract:
A drum for a photoplotter has a base having a partially cylindrical recess formed therein which recess being defined by in part by a plurality of elevated surfaces providing a support bed on which is mounted a sheet of material providing an exposed surface for supporting a substrate thereon. The drum is formed by a method whereby a tool is provided about which the sheet material is drawn and is moved into engagement with the bed and is caused to maintain this shape by an adhesive interposed therebetween. A method for mechanically compensating for surface irregularities by fixing the scanner relative to the support surface after displacements have been made is also provided.
Abstract:
A printing media feed and retaining apparatus particularly useful in a computer driven thermal ink jet printer/plotter which has a plurality of pinch rollers (20) mounted on a single pinch roller support member (25). One or more support members (25) are positioned adjacent a platen roller (10) in proximity to the print path. The pinch rollers (20) are retracted away from the platen roller for removing the print medium and are supported such that they are self centering and track without skewing or damaging the printing medium without the use of precision parts or mounting techniques.
Abstract:
A cutter drive for a computer driven printer/plotter employs a cutter carriage which is separate from the printer carriage and which is attachable to and detachable from the printer carriage to be moved thereby without a separate cutter drive. Camming surfaces on a pickup arm and a pickup hook permit the cutter carriage to be mechanically engaged and disengaged from the printer carriage without any motors or magnets.
Abstract:
An actuator mechanism for a plotter carriage adaptable for use in either a pen plotter or a pencil plotter mode in which a coupler engages both a support for a pen holder and a support for a lead holder and a motor and an actuator arm coupled to the motor are provided for driving the coupler relative to a drawing media surface. An interlock and a sensor are provided to enable the motor, actuator arm and coupler to be coupled to a pencil actuator mechanism and to determine whether the plotter carriage is being used in a pen plotter or a pencil plotter mode.
Abstract:
A paper moving system for a computer driven printer/plotter comprises a paper pinching assembly positioned at the two oppositely facing edges of the paper adjacent the print zone 10. The edges of the paper are fed through each assembly where the paper is gripped between a lubricous shim plate 52 and a straight stretch of a paper drive belt 42 which frictionally engages the paper. The belts of each assembly are biased toward the shim plates by a spring urged rail 50 to hold the belts in non-slip engagement with the paper. The paper is tensioned edge to edge by the assemblies so that a paper table or platen underneath the print zone is unnecessary.
Abstract:
An electrostatic plotter or similar color image forming apparatus for forming an image on a recording medium, e.g. a paper web being transported under tension by a transport roller pair by a head while sensing a register mark formed on the medium. The distance between the register mark and a register mark sensor and the distance between the paper web and the head are maintained constant.
Abstract:
A body having a pair of holes is provided to hold a pair of pencils or the like. The bores are provided with a threaded interior surface into which the instrument may be screwed and held.
Abstract:
An image forming apparatus has an operation part for specifying information to be recorded on a sheet, a recognition part for recognizing the information specified by the operation part, an input interface for receiving sequentially a first serial image data representing an image, a bit image generation part supplied with the first serial video data for forming bit images in response thereto, a memory having a memory area for storing the bit images formed by the bit image generation part in the memory area, a comparison part operatively connected on the one hand to the memory for reading out the bit images stored therein and on the other hand to the recognition part for receiving the information to be recorded on the sheet, the comparison part producing the output such that the output is changed with increasing occupation of the memory area by the bit images, and a reporting part connected to the comparison part for receiving the output from the comparison part and for displaying the proportion of the memory area of the memory which is already occupied by the bit images.
Abstract:
An instrument for trisecting an angle has two circular plates and four pointers. Two pointers are to define a given angle which can be an acute angle or obtuse angle. Two other pointers are to divide the given angle into three equal angles when they are perpendicular each other.