US 4,756,086 A · Pen printer

Abstract

A pen printer for performing drawing with a detachably held pen comprises a pen holder operation mechanism for moving a pen holder detachably holding the pen between a pen attaching position, where the pen is attached to or detached from the pen holder, and a home position, where drawing is started or ended, and for moving the pen holder from the home position for drawing a desired sign or figure according to a pattern corresponding to the desired sign or figure and causing the pen holder to return to the home position, a support member for supporting the pen holder operation mechanism to be movable in all directions, a pen seat, mounted on the support member, for receiving a tip of the pen held by the pen holder, pen attaching position reference point display marks, mounted on the pen seat, for displaying a pen attaching position reference point for the pen tip of the pen held by the pen holder, and pen holder operation mechanism moving screws for moving the pen holder operation mechanism in all directions so as to align the pen tip of the pen hold by the pen holder in the pen attaching position with the pen attaching position reference position.

Claims22

Dependent claims

A pen printer for performing drawing with a detachably held pen;

comprising:
a pen holder for detachably holding the pen;
a pen holder operation mechanism for moving said pen holder between a pen attaching position, where the pen is attached to or detached from said pen holder, and a home position, where drawing is started or ended, and for moving said pen holder from the home position for drawing a desired sign or figure according to a pattern corresponding to the desired sign or figure and causing said pen holder to return to the home position;
a support member for supporting said pen holder operation mechanism to be movable in all directions;
a pen seat, mounted on said support member, for receiving a tip of the pen held by said pen holder;
pen attaching position reference point display means, mounted on said pen seat, for displaying a pen attaching position reference point for the pen tip of the pen held by said pen holder;
and
pen holder operation mechanism moving means for moving said pen holder operation mechanism in all directions so as to align the pen tip of the pen held by said pen holder in the pen attaching position with the pen attaching position reference position.

5 more elements

A pen printer comprising a pen holder for detachably holding a pen and a pen holder operation mechanism for moving said pen holder according to a pattern corresponding to a desired sign or figure so as to cause the pen to draw the desired sign or figure on a paper surface, wherein said pen holder operation mechanism comprises:

a base;
a carrier frame supported on said base so as to be movable along a Y-axis;
a pen support member, supported by said carrier frame so as to be movable along an X-axis perpendicular to the Y-axis, for supporting said pen holder;
four pulleys rotatably mounted in said carrier frames, said four pulleys being respectively located at corners of a parallelogram having two parallel sides parallel to the Y-axis and two other parallel sides parallel to the X-axis;
a pair of rotary drums rotatably mounted on said base so as to be spaced apart on an X-axis line passing through a middle point of the parallelogram;
a pair of motors coupled to said pair of rotary drums to independently rotate said pair of rotary drums in a forward or reverse direction;
a pulley and a drive string fixing portion which are mounted on said pen support member, said pulley and said drive string fixing portion being spaced apart on an X-axis line passing through the middle point of the parallelogram;
and
a drive string looped around said pulley of said pen support member, two of said four pulleys which are near said pulley of said pen support member, said pair of rotary drums on said base, and the remaining two of said four pulleys which are near said drive string fixing portion on said pen support member, both ends of said drive string being fixed to said drive string fixing portion on said pen support member.

6 more elements

Dependencies are inferred from the claim text.

Pen printer

Life of this patent

Pen printer

Life of this patent

Abstract

Claims22