The autograph support device includes a supporting member that supports an image carrier having a planar image display surface such that the image display surface that displays a mirror-image image of an image displayed on a planar writing surface is located one side of the normal direction of the writing surface of a writing medium having the writing surface, and a half mirror that is arranged between the writing surface and the image display surface to reflect at least a portion of light from the one side of the nomal direction of the writing surface above and allow a portion of the light to be transmitted therethrough, and the image display surface and the writing surface are arranged at an equal optical distance with a planar mirror surface of the half mirror interposed therebetween.

The line-marking tool attaches to a pad of paper. The line-marking tool comprises an anchored straight edge, a rotating straight edge, and a slewing bearing. The slewing bearing attaches the rotating straight edge to the anchored straight edge. The anchored straight edge attaches to the pad of paper such that the position of the anchored straight edge relative to the top sheet of the pad of paper is fixed. The anchored straight edge and the rotating straight edge are used to draw straight lines on the top sheet. The slewing bearing adjusts the cant of the rotating straight edge relative to the anchored straight edge such that a cant is formed between a line drawn using the rotating straight edge and a line drawn using the anchored straight edge. The slewing bearing is calibrated to form a precise angle of cant on the top sheet.

The line-marking tool attaches to a pad of paper. The line-marking tool comprises an anchored straight edge, a rotating straight edge, and a slewing bearing. The slewing bearing attaches the rotating straight edge to the anchored straight edge. The anchored straight edge attaches to the pad of paper such that the position of the anchored straight edge relative to the top sheet of the pad of paper is fixed. The anchored straight edge and the rotating straight edge are used to draw straight lines on the top sheet. The slewing bearing adjusts the cant of the rotating straight edge relative to the anchored straight edge such that a cant is formed between a line drawn using the rotating straight edge and a line drawn using the anchored straight edge. The slewing bearing is calibrated to form a precise angle of cant on the top sheet.

The invention comprises a method and apparatus for producing a handwritten appearance of input text on a marking surface, comprising the steps of: backing the marking surface with a conveyor belt of a plotter system; machine plotting the input text on the marking surface with a plotting pen having a downward force of one-half to forty ounces; feeding a new sheet to the conveyor belt from a paper feeder system, the step of feeding under control of a paper position detection system; loading a current marking surface into the plotter system; and repeating the steps of loading and emulating n times as designated by a print job, where the step of emulating changes applied vectors to the current marking surface for sub-tasks within the print job and optionally to us graphic codes on the marking surface to control work flow.

In a cutting device for cutting a round, a transparent substrate is arranged on an object to be cut. A sleeving tube is arranged on the transparent substrate. An end of a transverse rod penetrates through the sleeving rod and extends to over the object. The position of the transverse rod in the sleeving rod is adjusted by a locking member. The other end of the transverse rod is fixed to a cutting assembly. The cutting assembly selectively touches the object. A rotating assembly is combined with the transparent substrate and penetrates through the transparent substrate. When the rotating assembly is pressed to touch the object and the rotating assembly rotates on the object to rotate the transparent substrate, the transverse rod moves the cutting assembly to perform a round-cutting operation on the object or paint a round line on the object.

A carpenter square includes a body including a first, second, and third edges. A fence is pivoted to the first edge for movement among first, second, and third positions. In the first and second positions, the fence is normal to the body. In the third position, the fence is coplanar to the body. A hinge assembly pivots the fence to the body and includes a notch in the body, a recess in the notch, and a tab projecting from the fence and fit over the pin for reciprocating and swinging movement. The tab moves between a neutral stance, in which the tab is mis-registered with the recess and disables movement of the fence among the first, second, and third positions, and an advanced stance, in which the tab is registered with the recess and enables movement of the fence among the first, second, and third positions.

A plotter includes a mounting portion, a first movement mechanism, a second movement mechanism, a processor, and a memory. The mounting portion is configured to mount with a pen containing a liquid. The first movement mechanism is configured to relatively move the mounting portion and a workpiece in a movement direction. The second movement mechanism configured to relatively move the mounting portion and the workpiece in a direction intersecting the movement direction. The memory is configured to store computer-readable instructions that, when executed by the processor, instruct the processor to perform processes. The processes include acquiring plot data, acquiring information relating to a remaining amount of the liquid of the pen, setting a relative movement speed of the mounting portion and the workpiece, and controlling the first movement mechanism and the second movement mechanism at the set movement speed, and performing drawing on the workpiece.

A vertically driving marking robot includes a robot body; at least one magnet constraining the robot to move parallel to a vertical, magnetically responsive surface; a drive configured to displace the robot relative to the surface while the robot is held to the surface; a holder configured to hold a marker; an accelerometer measuring a gravity vector; a computing device in communication with the optical sensors, the accelerometer, and the drive. The computing device includes a processor and computer-readable memory, wherein the computer-readable memory includes non-transitory program code for at least one of the following actions: (a) generating a drift correction to compensate for drive slippage drift in response to and as a function of the gravity vector and (b) commanding the drive to displace the robot along a desired trajectory in response to the drift correction.

The method of present disclosure relates to a writing apparatus for dispensing writing fluid on a writing surface. The writing apparatus comprises a sensor, containers for storing one or more mixing elements, a processor and a memory communicatively coupled to the processor. The writing apparatus compares the characteristics with predefined characteristics to determine quality of the writing surface. Further, the writing apparatus also determines a quality of the writing fluid suited for the writing surface. Based on the quality of the writing surface and the writing fluid, the writing apparatus modifies at least one property of the writing fluid before dispensing the writing fluid on the writing surface. For modifying the property, the one or more mixing elements are added into the writing fluid. Once the writing fluid is modified, the writing apparatus dispense the writing fluid on the writing surface.

Provided is a system and method for replicating drawings or carvings. The system includes three drawing or carving instruments. The three drawing or carving instruments are attached to one another via a fastener between each pair of drawing or carving instruments. A first tip of a first drawing or carving instrument is oriented between 0 and 180 degrees with respect to a second tip of a second drawing or carving instrument. A third tip of a third drawing or carving instrument is oriented between 0 and 180 degrees with respect to the first tip of the first drawing or carving instrument and with respect to the second tip of the second drawing or carving instrument. A first plane defined by the first tip and the second tip is non-coplanar with a second plane defined by the first tip and the third tip.