Print apparatus

1. A print apparatus comprising:

a print-medium sender configured to transport a print medium to perform linefeed of the print medium;

a print-medium transportation unit disposed downstream of the print-medium sender in a print-medium transportation direction, and configured to transport the print medium to perform linefeed of the print medium;

a print unit disposed downstream of the print-medium sender and upstream of the print-medium transportation unit in the print-medium transportation direction, and configured to perform printing on the print medium while moving in a direction perpendicular to the print-medium transportation direction; and

a linefeed-amount correction controller configured to set an amount of linefeed of the print medium by the print-medium sender to a first linefeed amount in order to linefeed the print medium by a first linefeed distance when only the print-medium sender transports the print medium, and to set an amount of linefeed of the print medium by the print-medium sender to a second linefeed amount different from the first linefeed amount in order to linefeed the print medium by the first linefeed distance when both the print-medium sender and the print-medium transportation unit transport the print medium at the same time,

wherein a third linefeed amount, which is an amount of linefeed of the print-medium transportation unit when both the print-medium sender and the print-medium transportation unit transport the print medium, is greater than the second linefeed amount, which is the amount of linefeed of the print-medium sender when both the print-medium sender and the print-medium transportation unit transport the print medium.

2. The print apparatus according to claim 1 , wherein

the first linefeed amount is greater than the second linefeed amount.

3. The print apparatus according to claim 1 further comprising

a print-unit movement controller configured to restrict the direction in which the print unit performs printing to a single direction when only one of the print-medium transportation unit and the print-medium sender linefeeds the print medium, and

wherein the print-unit movement controller is configured to enable printing in two directions when both the print-medium transportation unit and the print-medium sending linefeed the print medium at the same time.

4. The print apparatus according to claim 2 further comprising

a print-unit movement controller configured to restrict the direction in which the print unit performs printing to a single direction before the leading end of the print medium reaches the print-medium transportation unit.

5. The print apparatus according to claim 3 , wherein

the print-unit movement controller prevents the print unit from moving at a high speed when only one of the print-medium transportation unit and the print-medium sender linefeeds the print medium, and

wherein the print-unit movement controller is configured to allow the print unit to move at the high speed when both the print-medium transportation unit and the print-medium sending linefeed the print medium at the same time.

6. The print apparatus according to claim 4 , wherein

the print-unit movement controller prevents the print unit from moving at a high speed before the leading end of the print medium reaches the print-medium transportation unit.

7. The print apparatus according to claim 1 , wherein

after a trailing end of the print medium comes off the print-medium sender, the linefeed-amount correction controller is configured to set the amount of linefeed of the print medium by the print-medium transportation unit to be smaller than the amount of linefeed before the trailing end of the print medium comes off the print-medium sender.

8. The print apparatus according to claim 1 , wherein

a third linefeed amount, which is an amount of linefeed of the print-medium transportation unit when both the print-medium sender and the print-medium transportation unit transport the print medium, is greater than a fourth linefeed amount, which is an amount of linefeed of the print-medium transportation unit when only the print-medium transportation unit transports the print medium.

9. The print apparatus according to claim 8 , wherein

after the trailing end of the print medium comes off the print-medium sender, the print-unit movement controller is configured to prevent the print unit from moving at a high speed.

10. The print apparatus according to claim 1 , wherein

after the trailing end of the print medium comes off the print-medium sender, the print-unit movement controller prevents the print unit from moving at a high speed.

11. The print apparatus according to claim 1 , wherein

the linefeed-amount correction controller is configured to correct the amount of linefeed of the print medium in accordance with a thickness of the print medium.

12. The print apparatus of claim 11 , wherein the linefeed-amount correction controller is configured to correct the amount of linefeed of the print medium such that the linefeed amount is corrected in a greater amount as the thickness of the print medium increases in size.

13. The print apparatus according to claim 1 , wherein the linefeed amount of the print medium is set by the linefeed-amount correction controller based in part on a distance between a platen and a print head provided along the print medium transportation direction after the print-medium sender and before the print-medium transportation unit.

14. A print apparatus comprising:

a print-medium sender configured to transport a print medium to perform linefeed of the print medium;

a print-medium transportation unit disposed downstream of the print-medium sender in a print-medium transportation direction, and configured to transport the print medium to perform linefeed of the print medium;

a print unit disposed downstream of the print-medium sender and upstream of the print-medium transportation unit in the print-medium transportation direction, and configured to perform printing on the print medium; and

a controller configured to control an amount of linefeed of the print medium by the print-medium sender to a first linefeed amount in order to linefeed the print medium by a first linefeed distance when the print medium is transported by only the print-medium sender and to control an amount of linefeed of the print medium by the print medium sender to a second linefeed amount different from the first linefeed amount when both the print-medium sender and the print-medium transportation unit transport the print medium at the same time,

wherein a third linefeed amount, which is an amount of linefeed of the print-medium transportation unit when both the print-medium sender and the print-medium transportation unit transport the print medium, is greater than a fourth linefeed amount, which is an amount of linefeed of the print-medium transportation unit when only the print-medium transportation unit transports the print medium.

15. The print apparatus according to claim 13 , wherein the linefeed amount of the print medium is set by the linefeed-amount correction controller such that the linefeed amount of the print medium is corrected in a greater amount as the distance between the platen and the print head increases.

16. The print apparatus according to claim 14 , wherein the first linefeed amount is greater than the second linefeed amount.

17. The print apparatus according to claim 14 further comprising

a print-unit movement controller configured to restrict the direction in which the print unit performs printing to a single direction when only one of the print-medium transportation unit and the print-medium sender linefeeds the print medium, and

wherein the print-unit movement controller is configured to enable printing in two directions when both the print-medium transportation unit and the print-medium sending linefeed the print medium at the same time.

18. The print apparatus according to claim 14 , wherein

the controller is configured to control the linefeed amount of the print medium in accordance with a thickness of the print medium.

19. The print apparatus of claim 18 , wherein the controller is configured to control the linefeed amount of the print medium such that the linefeed amount is corrected in a greater amount as the thickness of the print medium increases in size.

20. The print apparatus according to claim 14 , wherein the linefeed amount of the print medium is controlled by the controller based in part on a distance between a platen and a print head provided along the print medium transportation direction after the print-medium sender and before the print-medium transportation unit.

21. The print apparatus according to claim 20 , wherein the linefeed amount of the print medium is controlled by the controller such that the linefeed amount of the print medium is corrected in a greater amount as the thickness of the print medium increases in size.

22. The print apparatus according to claim 14 ,

wherein the controller is configured to move the print unit at a first speed when both the print-medium transportation unit and the print-medium sender linefeed the print medium at the same time, and the controller is configured to move the print unit at a second speed slower than the first speed when only one of the print-medium transportation unit and the print-medium sender linefeeds the print medium.

23. A print apparatus comprising:

a print-medium sender configured to transport a print medium to perform linefeed of the print medium;

a print-medium transportation unit disposed downstream of the print-medium sender in a print-medium transportation direction, and configured to transport the print medium to perform linefeed of the print medium;

a print unit disposed downstream of the print-medium sender and upstream of the print-medium transportation unit in the print-medium transportation direction, and configured to perform printing on the print medium; and

a controller configured to control an amount of linefeed of the print medium by the print-medium sender to a first linefeed amount in order to linefeed the print medium by a first linefeed distance when the print medium is transported by only the print-medium sender and to control an amount of linefeed of the print medium by the print medium sender to a second linefeed amount different from the first linefeed amount when both the print-medium sender and the print-medium transportation unit transport the print medium at the same time,

wherein a third linefeed amount, which is an amount of linefeed of the print-medium transportation unit when both the print-medium sender and the print-medium transportation unit transport the print medium, is greater than the second linefeed amount, which is the amount of linefeed of the print-medium sender when both the print-medium sender and the print-medium transportation unit transport the print medium.