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A printing apparatus capable of easily setting driving conditions in consideration of conditions on the printing apparatus main body side as well at an arbitrary point of time is disclosed. The printing apparatus including a printhead having a plurality of print elements and a head driver for genera

A printing apparatus capable of easily setting driving conditions in consideration of conditions on the printing apparatus main body side as well at an arbitrary point of time is disclosed. The printing apparatus including a printhead having a plurality of print elements and a head driver for generating a pulse-like driving signal supplied to the printhead. The apparatus sets driving conditions for a printhead with test patterns obtained by simultaneously driving a predetermined number of print elements of the plurality of print elements are printed on the printing medium while the pulse width of the driving signal is decreased stepwise from a predetermined value. Then, the boundary value of a pulse width with which a print element is not properly driven is obtained from the test patterns, and the pulse width of a driving signal generated by the head driver is controlled on the basis of the boundary value.

대표청구항 ▼

A printing apparatus capable of easily setting driving conditions in consideration of conditions on the printing apparatus main body side as well at an arbitrary point of time is disclosed. The printing apparatus including a printhead having a plurality of print elements and a head driver for genera

A printing apparatus capable of easily setting driving conditions in consideration of conditions on the printing apparatus main body side as well at an arbitrary point of time is disclosed. The printing apparatus including a printhead having a plurality of print elements and a head driver for generating a pulse-like driving signal supplied to the printhead. The apparatus sets driving conditions for a printhead with test patterns obtained by simultaneously driving a predetermined number of print elements of the plurality of print elements are printed on the printing medium while the pulse width of the driving signal is decreased stepwise from a predetermined value. Then, the boundary value of a pulse width with which a print element is not properly driven is obtained from the test patterns, and the pulse width of a driving signal generated by the head driver is controlled on the basis of the boundary value. wherein said pelletized EVAs define gaps therebetween. 4. The illuminated sparkling pumpkin of claim 3, wherein said pelletized EVAs having soft and rough surfaces create a varying degree of light dispersion effect when illuminated. 5. The illuminated sparkling pumpkin of claim 1, said light source comprising: an on-off switch; and a base member having a battery receiving chamber connected to a socket for receiving a threaded electrical connector of a light bulb. 6. The illuminated sparkling pumpkin of claim 5, wherein eyes, a nose, and a mouth are attached to said depressions. 7. A decorative pumpkin, comprising: a main body shell made of rotationally molded pelletized copolymers and a coloring agent, said main body shell having an exterior surface forming a pumpkin-like shape, said exterior surface defining a hollow interior space; and a light source for providing illumination within said hollow interior space, wherein said main body shell imparts an enhanced glowing effect upon illumination from said light source. 8. The decorative pumpkin of claim 7, said main body shell further comprising: a face section having characterizing depressions; a pumpkin stem-shaped protrusion positioned at a top portion of said main body shell; and a plurality of generally vertically extending grooves segmenting said main body shell. 9. The decorative pumpkin of claim 8, wherein fabric eyes, nose, and mouth are attached in said depressions. 10. The decorative pumpkin of claim 7, wherein said pelletized copolymers are formed from ethylene vinyl acetate. 11. The decorative pumpkin of claim 7, wherein said pelletized copolymers have soft and rough surfaces, and wherein said pelletized parts define gaps therebetween. 12. The decorative pumpkin of claim 11, wherein said pelletized parts having soft and rough surfaces create a varying degree of light dispersion effect when illuminated by a light source providing illumination within said hollow interior space. 13. A method of manufacturing a synthetic pumpkin, comprising the steps of: providing a pelletized raw material in a mold; placing said mold in a processing machine; rotating said mold while heating said mold to a pre-selected operating temperature; maintaining said mold at said pre-selected operating temperature to form a main body shell having an exterior surface forming a pumpkin shape, said exterior surface defining a hollow interior space; and removing said formed main body shell from said processing machine. 14. The method of manufacturing the pumpkin of claim 13, further comprising adding a coloring agent to said mold. 15. The method of manufacturing the pumpkin of claim 13, wherein said pelletized raw material is ethylene vinyl acetate copolymer (EVA). 16. The method of manufacturing the pumpkin of claim 13, wherein said main body shell further comprises: a face section having depressions forming Jack-o-lantern eyes, nose and mouth; a pumpkin stem-shaped protrusion positioned at a top portion of said main body shell; and a plurality of generally vertically extending grooves segmenting said main body shell, wherein said main body shell further defining an aperture at a bottom portion of said main body shell. 17. The method of manufacturing the pumpkin of claim 16, further comprising the step of affixing eyes, nose, and mouth shaped elements in said depressions. 18. The method of manufacturing the pumpkin of claim 13, further comprising: providing a light source within said hollow interior space, wherein said light source includes an on-off switch and a base member having a battery chamber and socket for receiving a light bulb.