Printing apparatus, control method, and conveyance apparatus

Patent metadata

Field	Value
Publication number	US-11813853-B2
Application number	US-202117408641-A
Country	US
Kind code	B2
Filing date	Aug 23, 2021
Priority date	Sep 17, 2020
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

To provide a technology capable of appropriately suppressing deterioration in cutting accuracy of a slitter although the rigidity of a print medium changes, a printing apparatus is equipped with: a first conveyance unit configured to convey a print medium; a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit; a cutting unit disposed on a downstream side in a conveyance direction in which the print medium is conveyed by the first conveyance unit and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction; and a second conveyance unit disposed on the cutting unit, and the printing apparatus includes a correction unit configured to correct a parameter related to conveyance of at least one of the first conveyance unit and the second conveyance unit, based on information about the print medium.

First claim

What is claimed is:

1. A printing apparatus comprising:
a first conveyance unit configured to convey a print medium in a conveyance direction;
a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit;
a cutting unit disposed on a downstream side of the printing unit in the conveyance direction and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction;
a second conveyance unit disposed on the cutting unit; and
a correction unit configured to correct a parameter related to conveyance of the second conveyance unit, based on information obtained by reading a detection pattern which is printed by the printing unit.

2. The printing apparatus according to claim 1 , wherein the information is information related to a change in rigidity.

3. The printing apparatus according to claim 2 , wherein the correction unit further corrects the parameter based on information which is a setting of marginless, which is for cutting an inside of an image print area in which an image based on image data is printed, or with-margin, which is for cutting an outside of the image print area.

4. The printing apparatus according to claim 3 , wherein the correction unit corrects a ratio of a conveyance speed of the second conveyance unit to a conveyance speed of the first conveyance unit so that the ratio increases in a case where the setting is marginless, as compared to a case where the setting is with-margin.

5. The printing apparatus according to claim 1 , wherein the detection pattern is printed together with an image printed based on image data.

6. The printing apparatus according to claim 5 , wherein the detection pattern is a pattern whose lightness changes in a case where a conveyance amount of the first conveyance unit and the second conveyance unit change.

7. The printing apparatus according to claim 5 , wherein the cutting unit is disposed at two locations in a width direction of the print medium, the width direction intersecting the conveyance direction, and
wherein the detection pattern is formed on at least one side in the width direction, the one side being outside an image print area in which the image based on the image data is printed.

8. The printing apparatus according to claim 2 , wherein the correction unit further corrects the parameter based on information which is an ink application amount for a cutting area in a vicinity of a cutting section to be cut by the cutting unit, the cutting area including the cutting section.

9. The printing apparatus according to claim 8 , wherein the cutting area is divided in the conveyance direction, and the information is an ink application amount for each area obtained by the division.

10. The printing apparatus according to claim 8 , wherein the cutting unit is disposed at two locations in a width direction of the print medium, the width direction intersecting the conveyance direction, and
wherein the information is a greater ink application amount of the two cutting areas.

11. The printing apparatus according to claim 9 , wherein the cutting unit is disposed at two locations in a width direction of the print medium, the width direction intersecting the conveyance direction, and
wherein the information is a greater ink application amount of the two cutting areas which are located at both ends of an area obtained by the division in the width direction.

12. The printing apparatus according to claim 8 , wherein the correction unit corrects a ratio of a conveyance speed of the second conveyance unit to a conveyance speed of the first conveyance unit so that the ratio increases according to an increase in the ink application amount in the cutting area.

13. The printing apparatus according to claim 8 , wherein the ink application amount is a printing duty which indicates an application amount of ink for a unit area in the cutting area.

14. The printing apparatus according to claim 8 , wherein the correction unit further corrects the parameter based on information which includes a type of print medium.

15. The printing apparatus according to claim 14 , wherein the correction unit corrects a ratio of a conveyance speed of the second conveyance unit to a conveyance speed of the first conveyance unit so that the ratio increases according to a decrease in rigidity of the type of print medium due to a liquid component of ink.

16. The printing apparatus according to claim 1 , wherein the correction unit adjusts a corrected value according to a use amount of the cutting unit.

17. The printing apparatus according to claim 1 , wherein the first conveyance unit and the second conveyance unit are conveyance rollers, respectively, and
wherein the parameter is a rotation speed of each of the conveyance rollers.

18. A printing apparatus comprising:
a first conveyance unit configured to convey a print medium in a conveyance direction;
a printing unit configured to print an image by applying ink to the print medium conveyed by the first conveyance unit;
a cutting unit disposed on a downstream side of the printing unit in the conveyance direction and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction;
a second conveyance unit disposed on the cutting unit; and
a correction unit configured to correct a parameter related to conveyance of at least one of the first conveyance unit and the second conveyance unit, based on information about the print medium,
wherein the parameter is driving amounts of a first driving unit that drives the first conveyance unit and a second driving unit that drives the second conveyance unit.

19. The printing apparatus according to claim 1 , wherein the correction unit corrects a parameter related to conveyance of the first conveyance unit, based on information obtained by reading the detection pattern which is printed by the printing unit.

20. A control method of a printing apparatus, the printing apparatus including: (a) a first conveyance unit configured to convey a print medium in a conveyance direction; (b) a printing unit configured to print an image on the print medium conveyed by the first conveyance unit; (c) a cutting unit disposed on a downstream side of the printing unit in the conveyance direction and configured to cut the print medium, which is conveyed by the first conveyance unit, along the conveyance direction; and (d) a second conveyance unit disposed on the cutting unit, the control method comprising
a correction step for correcting a parameter related to conveyance of the second conveyance unit, based on information obtained by reading a detection pattern which is printed by the printing unit.

21. The control method according to claim 20 , wherein the detection pattern is printed together with an image printed based on image data.

22. The control method according to claim 21 , wherein the detection pattern is a pattern whose lightness changes in a case where a conveyance amount of the first conveyance unit and the second conveyance unit change.

23. The control method according to claim 21 , wherein the cutting unit is disposed at two locations in a width direction of the print medium, the width direction intersecting the conveyance direction, and
wherein the detection pattern is formed on at least one side in the width direction, the one side being outside an image print area in which the image based on the image

Assignees

• Canon Kk

Inventors

• Kawafuji Hiroshi
• Taira Hiroshi
• Sato Kazuhiko
• Yokozawa Taku
• Kunimine Noboru
• Aichi Akiko
• Azuma Satoshi
• Mogi Sae
• Yoshizawa Kei
• Nishioka Shingo
• Saito Junichi
• Nagai Hajime
• Baba Naoko
• Konno Yuji
• Yoshikawa Serena
• Wada Satoshi

Classifications

• B41J11/663 Primary

  Controlling cutting, cutting resulting in special shapes of the cutting line, e.g. controlling cutting positions, e.g. for cutting in the immediate vicinity of a printed image · CPC title

• B41J11/009

  Detecting type of paper, e.g. by automatic reading of a code that is printed on a paper package or on a paper roll or by sensing the grade of translucency of the paper · CPC title

• B41J11/706

  using a cutting tool mounted on a reciprocating carrier · CPC title