Printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Tanno, Haruhiko Koto
Life of this patent
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Abstract
A printing apparatus includes transporting belt transporting a printing sheet in a flat surface region opposing to respective ejection openings of printing heads, suction force generating means for generating an electrostatic suction force on a transporting surface of the belt and control means for controlling to generate the suction force only in a region opposing to the head. The control means applies positive and negative high potential to the suction force generating means with reference to a potential of the head.
Claims66
A printing apparatus performing printing using a liquid ejection head ejecting a printing liquid, comprising:
- transporting means for transporting a printing medium in a region opposing to ejection opening of said liquid ejection head;
- suction force generating means for generating a suction force on a transporting surface of said transporting means;
- and
- suction force generation control means for controlling said suction force generating means for generating the suction force only in a region opposing to said liquid ejection head relating to liquid ejection.
A printing apparatus, comprising:
- a printing head printing an image on a printing medium;
- a transporting belt transporting said printing medium;
- suction force Generating means constituted by arranging comb shape electrodes integrally formed with said transporting belt and making each individual comb teeth independent;
- power supply means for supplying a power to a power supplied portion of said electrodes provided on an end portion in the transporting direction of said transporting belt;
- and
- depressing means for depressing said printing medium toward said transporting belt at the most upstream side position of a region where a suction force can be generated by said suction force generating means,
- wherein said power supply means supplies a power to said suction force generating means only in the vicinity of a printing region by said printing head.
A printing apparatus, comprising:
- a printing head arranged a plurality of printing elements flying coloring material;
- suction force generating means arranged in opposition to said printing head,
- positive and negative high potential being applied to said suction force generating means with reference to a potential of said printing head, for sucking a printing medium opposing to said printing head.
A printing apparatus performing printing using a liquid ejection head ejecting a printing liquid, comprising:
- transporting means for transporting a printing medium in a region opposing to ejection opening of said liquid ejection head;
- attraction force generating means for generating an attraction force on a transporting surface of said transporting means;
- and
- attraction force generation control means for controlling said attraction force generating means for generating the attraction force only in a region opposing to said liquid ejection head relating to liquid ejection.
A printing apparatus, comprising:
- a printing head printing an image on a printing medium;
- a transporting belt transporting said printing medium;
- attraction force generating means constituted by arranging comb shape electrodes integrally formed with said transporting belt and making each individual comb teeth independent;
- power supply means for supplying a power to a power supplied portion of said electrodes provided on an end portion in the transporting direction of said transporting belt;
- and
- depressing means for depressing said printing medium toward said transporting belt at the most upstream side position of a region where an attraction force can be generated by said attraction force generating means,
- wherein said power supply means supplies a power to said attraction force generating means only in the vicinity of a printing region by said printing head.
A printing apparatus, comprising:
- a printing head arranged a plurality of printing elements flying coloring material;
- attraction force generating means arranged in opposition to said printing head,
- positive and negative high potential being applied to said attraction force generating means with reference to a potential of said printing head, for attracting a printing medium opposing to said printing head.
Dependencies are inferred from the claim text.