A soft-member attachment structure includes an attachment hole provided through a rear end portion of a barrel. The barrel configures a thermochromic writing instrument, along a longitudinal central axis and having an inner circumferential surface between two openings located at an upper end and a lower end; an attachment portion located under a large diameter portion of a soft member used for a thermochromic change and having a diameter being smaller than a diameter of the large diameter portion and allowing insertion into the attachment hole; a straight internal hole provided along a longitudinal central axis of the soft member and opening at least at a lower end of the soft member; and a rod-like inner core having an outer diameter allowing insertion into the internal hole, a length to be placed within the internal hole, and an outer circumferential surface contacting an inner circumferential surface of the internal hole. The attachment portion is inserted into the attachment hole and the inner core is inserted into the internal hole to attach the soft member to the attachment hole.

A new design for a marker holder and eraser has a front side and a back side, the back side having a recess. The front side has two openings for retaining markers. A metal plate and a magnet holder are disposed within the recess and an erasing material covers the recess. Projections extend from the magnet holder into openings on the front side to engage markers disposed in the openings, thereby holding the markers at any angle.

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.

An inflatable white board includes at least one sheet and at least one inflatable portion constructed and arranged to provide rigidity to the inflatable white board. The inflatable whiteboard may include a sheet constructed and arranged to function as marker board, dry erase board, dry-wipe board, pen board, or the like. The sheet may have one or more layers, such as a writable/erasable top layer and a bottom layer. The inflatable whiteboard may be reusable and may be deflated for ease of storage and transport. The inflatable whiteboard may include a writing instrument holder

An inflatable white board includes at least one sheet and at least one inflatable portion constructed and arranged to provide rigidity to the inflatable white board. The inflatable whiteboard may include a sheet constructed and arranged to function as marker board, dry erase board, dry-wipe board, pen board, or the like. The sheet may have one or more layers, such as a writable/erasable top layer and a bottom layer. The inflatable whiteboard may be reusable and may be deflated for ease of storage and transport. The inflatable whiteboard may include a writing instrument holder

The coating film transfer tool includes: a feeding core around which transfer tape is wound and that feeds a piece of transfer tape, the piece of transfer tape including a piece of base tape and a coating film that is provided on one surface of the piece of base tape; a transfer head that presses the coating film against a transfer target and transfers the coating film thereonto; a winding core that winds up the piece of base tape from which the coating film has been transferred; and an intermediate roller that rotates as the piece of transfer tape travels, in contact with a first surface of the piece of transfer tape fed from the feeding core, the first surface being a surface on which the coating film is not provided. A second surface of the intermediate roller is adhesive with respect to the first surface.

The coating film transfer tool includes: a feeding core around which transfer tape is wound and that feeds a piece of transfer tape, the piece of transfer tape including a piece of base tape and a coating film that is provided on one surface of the piece of base tape; a transfer head that presses the coating film against a transfer target and transfers the coating film thereonto; a winding core that winds up the piece of base tape from which the coating film has been transferred; and an intermediate roller that rotates as the piece of transfer tape travels, in contact with a first surface of the piece of transfer tape fed from the feeding core, the first surface being a surface on which the coating film is not provided. A second surface of the intermediate roller is adhesive with respect to the first surface.

An eraser for removing strokes of writing, painting and/or drawing tools, including at least one binder and at least one plasticizer. The eraser includes at least one plasticizer in the form of pentaerythritol tetravalerate.

A writing system that includes a reusable notebook including a sheet having a working surface. The working surface includes a printed code and an operative control. The writing system includes a writing instrument configured to capture images of the printed code and a computing device configured to communicate with the reusable notebook and/or the writing instrument. The sheet includes a surface coating over the working surface configured so that a writing material of the writing instrument can be removed by applying a dry ancillary device.

A writing system that includes a reusable notebook including a sheet having a working surface. The working surface includes a printed code including an operative control. The writing system includes a writing instrument configured to capture images of the printed code and a computing device configured to communicate with the reusable notebook and/or the writing instrument. The sheet includes a porous surface located in the working surface. A writing material of the writing instrument comprises solid particles having a particle size greater than a porosity of the porous surface.