Claims
- 1. A printing apparatus for performing printing using a liquid ejection head ejecting a printing liquid, comprising:a carrying surface for carrying a printing medium while supporting the printing medium in a region opposed to an ejection opening of said liquid ejection head; an attraction force generating device for generating an attraction force that attracts said printing medium on said carrying surface; and a controlling section for controlling said attraction force generating device in order to create a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface in accordance with an ejection signal supplied to said liquid ejection head.
- 2. A printing apparatus as claimed in claim 1, wherein said attraction force generating device has a plurality of regions where said attraction force is generated, the plurality of regions being divided in a carrying direction of said carrying surface, and wherein said controlling section independently controls each of said plurality of divided regions to create regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 3. A printing apparatus as claimed in claim 1, wherein said region where attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid ejection head.
- 4. A printing apparatus as claimed in claim 1, which further comprises a depressing device for depressing said printing medium toward said carrying surface at a most upstream position of said region where the attraction force can be generated by said attraction force generating device.
- 5. A printing apparatus as claimed in claim 1, wherein said controlling section applies a positive and a negative high electric potential to said attraction force generating device with reference to an electric potential of said liquid ejection head.
- 6. A printing apparatus as claimed in claim 1, wherein said liquid election head has a plurality of printing elements arranged over the entire width of said printing medium.
- 7. A printing apparatus as claimed in claim 1, wherein said liquid ejection head is detachably mounted on a carriage which is reciprocally movable in a direction perpendicular to a carrying direction of said carrying surface.
- 8. A printing apparatus as claimed in claim 1, wherein said liquid ejection head has a thermal energy generating body applying thermal energy as sufficient energy for ejecting said printing liquid, in a liquid passage communicated with said ejection opening.
- 9. A printing apparatus as claimed in claim 8, wherein said thermal energy generating body is an electrothermal transducer causing a film boiling in said printing liquid.
- 10. A printing apparatus as claimed in claim 1, wherein said printing liquid is black, cyan, magenta and yellow inks, and wherein a plurality of said liquid ejection heads are arranged along the carrying direction of said carrying surface with respect to each ink.
- 11. A printing apparatus performing printing using a liquid ejection head ejecting a printing liquid, comprising:a carrying surface for carrying a printing medium while supporting the printing medium in a region opposed to an ejection opening of said liquid ejection head; an attraction force generating device for generating an attraction force for attracting said printing medium on said carrying surface; and a controlling section for controlling said attraction force generating device so as to create a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface opposed to said liquid ejection head.
- 12. A printing apparatus as claimed in claim 11, wherein said attraction force generating device has a plurality of regions where said attraction force is generated, said plurality of regions being divided in a carrying direction of said carrying surface, and wherein said controlling section independently controls each of said plurality of regions where attraction forces are generated to create regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 13. A printing apparatus as claimed in claim 11, wherein said region where said attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid election head.
- 14. A printing apparatus as claimed in claim 11, which further comprises a depressing device for depressing said printing medium toward said carrying surface at a most upstream position of said region where said attraction force can be generated by said attraction force generating device.
- 15. A printing apparatus as claimed in claim 11, wherein said controlling section applies a positive and a negative high electric potential with reference to an electric potential of said liquid election head.
- 16. A printing apparatus as claimed in claim 11, wherein said liquid ejection head has a plurality of printing elements arranged over the entire width of said printing medium.
- 17. A printing apparatus as claimed in claim 11, wherein said liquid ejection head is detachably mounted on a carriage which is reciprocally movable in a direction perpendicular to the carrying direction of said carrying surface.
- 18. A printing apparatus as claimed in claim 11, wherein said liquid ejection head has a thermal energy generating body applying thermal energy as sufficient energy for ejecting said printing liquid, in a liquid passage communicated with an ejection opening.
- 19. A printing apparatus as claimed in claim 18, wherein said thermal energy generating body is an electrothermal transducer causing a film boiling of said printing liquid.
- 20. A printing apparatus as claimed in claim 11, wherein said printing liquid is black, cyan, magenta and yellow inks, and wherein a plurality of said liquid ejection heads are arranged along a carrying direction of said carrying surface with respect to each ink.
- 21. A printing apparatus for performing printing using a liquid ejection head ejecting a printing liquid, comprising:a carrying surface for carrying a printing medium while supporting the printing medium in a region opposed to an ejection opening of said liquid ejection head; an attraction force generating device for generating an attraction force that attracts said printing medium on said carrying surface; and a controlling section for controlling said attraction force generating device so as to create a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface opposite to said liquid ejection head in accordance with plural ejection signals supplied to said liquid ejection head.
- 22. A printing apparatus as claimed in claim 21, wherein said attraction force generating device has a plurality of regions where the attraction force can be generated, said plurality of regions being divided in a carrying direction of said carrying surface, and wherein said controlling section independently controls each of said plurality of divided regions where said attraction forces are generated to create plural regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 23. A printing apparatus as claimed in claim 21, wherein said region where said attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid ejection head.
- 24. A printing apparatus as claimed in claim 21, which further comprises a depressing device for depressing said printing medium toward said carrying surface at a most upstream position of said region where the attraction force can be generated by said attraction force generating device.
- 25. A printing apparatus as claimed in claim 21, wherein said controlling section applies a positive and a negative high electric potential to said attraction force generating device with reference to an electric potential of said liquid ejection head.
- 26. A printing apparatus as claimed in claim 21, wherein said liquid ejection head has a plurality of printing elements arranged over the entire width of said printing medium.
- 27. A printing apparatus as claimed in claim 21, wherein said liquid ejection head is detachably mounted on a carriage which is reciprocally movable in a direction perpendicular to a carrying direction of said printing medium.
- 28. A printing apparatus as claimed in claim 21, wherein said liquid ejection head has a thermal energy generating body applying thermal energy as sufficient energy for ejecting said printing liquid, in a liquid passage communicated with said ejection opening.
- 29. A printing apparatus as claimed in claim 28, wherein said thermal energy generating body is an electrothermal transducer causing a film boiling of said printing liquid.
- 30. A printing apparatus as claimed in claim 21, wherein said printing liquid is black, cyan, magenta and yellow inks, and wherein a plurality of said liquid ejection heads are arranged along a carrying direction of said carrying surface with respect to each ink.
- 31. A printing method for performing printing using a liquid ejection head for ejecting printing liquid, comprising steps of:supporting and carrying a printing medium to a region opposed to an ejection opening of said liquid ejection head by a carrying surface; generating an attraction force for attracting said printing medium on said carrying surface; and creating a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface in accordance with plural ejection signals supplied to said liquid ejection head.
- 32. A printing method as claimed in claim 31, wherein a plurality of regions where said attraction force is generated is provided, said plurality of regions being divided in a carrying direction of said carrying surface, and wherein each of said plurality of divided regions where said attraction forces are generated is independently controlled to create regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 33. A printing method as claimed in claim 31, wherein said region where said attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid ejection head.
- 34. A printing method for performing printing using a liquid ejection head for ejecting printing liquid, comprising steps of:supporting and carrying a printing medium in a region opposed to an ejection opening of said liquid ejection head by a carrying surface; generating an attraction force for attracting said printing medium on said carrying surface; and creating a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface opposed to said liquid ejection head.
- 35. A printing method as claimed in claim 34, wherein a plurality of regions where said attraction force is generated is provided, said plurality of regions being divided in a carrying direction of said carrying surface, and each of said plurality of divided regions is independently controlled to create a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 36. A printing method as claimed in claim 34, wherein said region where said attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid ejection head.
- 37. A printing method for performing printing using a liquid ejection head for ejecting printing liquid, comprising steps of:supporting and carrying a printing medium in a region opposed to an ejection opening of said liquid ejection head by a carrying surface; generating an attraction force for attracting said printing medium on said carrying surface; and creating a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface opposed to said liquid ejection head in accordance with plural ejection signals supplied to said liquid ejection head.
- 38. A printing method as claimed in claim 37, wherein a plurality of regions where said attraction force is generated is provided, said plurality of regions being divided in a carrying direction of said carrying surface, and wherein each of said plurality of divided regions where said attraction force is generated is independently controlled to create a plurality of regions where said attraction force is generated and where said attraction force is not generated in a predetermined region of said carrying surface.
- 39. A printing method as claimed in claim 37, wherein said region where said attraction force is generated is a region, and an area near the region, where printing is carried out on said printing medium by said liquid ejection head.
Priority Claims (3)
Number |
Date |
Country |
Kind |
9-319357 |
Nov 1997 |
JP |
|
9-319988 |
Nov 1997 |
JP |
|
10-312889 |
Nov 1998 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/193,859, filed Nov. 18, 1998, now allowed Pat. No. 6,309,064.
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Non-Patent Literature Citations (1)
Entry |
J.T. Loiselle et al., “Paper Transport Device”, IBM Technical Disclosure Bulletin, vol. 24, No. 5, Oct. 1981, pp. 2290-2292. |