Printing apparatus for detecting and avoiding unprintable regions on recording mediums

Patent metadata

Field	Value
Publication number	US-9358812-B2
Application number	US-201313749379-A
Country	US
Kind code	B2
Filing date	Jan 24, 2013
Priority date	Jun 16, 2010
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A printing apparatus for performing printing on a recording medium includes a printing unit configured to perform printing a plurality of images sequentially on a recording medium, a detection unit configured to detect an unsuitable area that is not suitable for printing on the recording medium, and a control unit configured to control, when the detection unit detects the unsuitable area, so as to define an unprintable region, including the unsuitable area, where the image is not to be printed on the recording medium based on a length of the unsuitable area in a direction of conveyance of the recording medium, and to continue printing the images while avoiding the set unprintable region.

First claim

What is claimed is:

1. An apparatus comprising:
a determining unit configured to determine an unsuitable area that is not suitable for printing of a print medium; and
a print control unit configured to cause a print unit to print an image on the print medium and to cause the print unit to skip printing of the image so as not to print the image on the unsuitable area in accordance with the unsuitable area determined by the determining unit,
wherein the print control unit varies an amount for causing the print unit to skip the printing of the image, according to the unsuitable area, and
wherein the print control unit causes the print unit to skip the printing of the image by inserting a blank-margin job into a queue of a print job table.

2. The apparatus according to claim 1 , wherein the determining unit determines a length in a direction of conveyance of the print medium as a length of the unsuitable area.

3. The apparatus according to claim 1 , wherein the determining unit determines the unsuitable area by obtaining a sensing result of a sensor equipped on an upper stream of the print unit in a direction of conveyance of the print medium.

4. The apparatus according to claim 1 , wherein the print control unit causes the print unit to print a cut mark for causing a cutter to cut the print medium after the skipping of the printing is performed.

5. The apparatus according to claim 1 , wherein the determining unit determines an image to be printed corresponding to the unsuitable area, and the print control unit causes the print unit to print the image determined by the determining unit on a subsequent area to the unsuitable area without printing on the unsuitable area.

6. The apparatus according to claim 1 , wherein the print medium is a continuous sheet.

7. The apparatus according to claim 1 , further comprising:
a generation unit configured to generate a print job table indicating an order of execution of printing operations including printing of an image; and
a setting unit configured to set information for specifying an order of execution of a skip table for skipping the printing on the unsuitable area,
wherein the print control unit causes the print unit to skip the printing on the unsuitable area based on the skip table and causes the print unit to continue a printing operation on a subsequent area to the unsuitable area based on the print job table generated by the generation unit.

8. The apparatus according to claim 7 , further comprising a second generation unit configured to generate the skip table, wherein the skip table indicates an order of execution of printing operations for skipping the printing to be performed on the unsuitable area.

9. A method comprising:
determining an unsuitable area that is not suitable for printing of a print medium; and
printing an image on the print medium and skipping the printing of the image so as not to print the image on the unsuitable area in accordance with the determined unsuitable area,
wherein an amount for causing the print unit to skip the printing of the image is varied, according to the unsuitable area, and
wherein the skipping is performed by inserting a blank-margin job into a queue of a print job table.

10. The method according to claim 9 , wherein the determined unsuitable area corresponds to a length in a direction of conveyance of the print medium.

11. The method according to claim 9 , wherein the determined unsuitable area is determined by obtaining a sensing result of a sensor equipped on an upper stream of the print unit in a direction of conveyance of the print medium.

12. The method according to claim 9 , further comprising printing a cut mark for causing a cutter to cut the print medium after the skipping of the printing is performed.

13. The method according to claim 9 , further comprising:
generating a print job table indicating an order of execution of printing operations including printing of an image; and
setting information for specifying an order of execution of a skip table for skipping the printing on the unsuitable area,
wherein the printing is performed so that the printing on the determined unsuitable area is skipped based on the skip table, and a printing operation is continued on a subsequent area to the unsuitable area based on the generated print job table.

14. An apparatus comprising:
a determining unit configured to determine an unsuitable area that is not suitable for printing of a print medium;
a generation unit configured to generate a print job table indicating an order of execution of printing operations including printing of an image;
a setting unit configured to set information for specifying an order of execution of a skip table for skipping the printing on the unsuitable area; and
a print control unit configured to cause a print unit to print an image on the print medium based on the print job table generated by the generation unit,
wherein the print control unit causes the print unit to skip printing on the unsuitable area determined by the determination unit based on the skip table, and causes the print unit to continue a printing operation on a subsequent area to the unsuitable area based on the print job table generated by the generation unit.

15. The apparatus according to claim 14 , wherein the print control unit causes the print unit to perform a duplex printing, the determining unit determines the unsuitable area on a first surface of the print medium, and the print control unit causes the print unit to skip the printing both on the first surface and a second surface, that is a back of the first surface, of the print medium, in accordance with the unsuitable area on the first surface determined by the determining unit.

16. The apparatus according to claim 14 , wherein the print control unit causes the print unit to skip the printing of the image by inserting a blank-margin job into a queue of a print job table.

17. The apparatus according to claim 14 , wherein the print control unit causes the print unit to print a cut mark for causing a cutter to cut the print medium after the skipping of the printing is performed.

Assignees

• Canon Kk

Inventors

• Serizawa Kouichi

Classifications

• B41J11/008 Primary

  Controlling printhead for accurately positioning print image on printing material, e.g. with the intention to control the width of margins · CPC title

• B41J11/0095

  Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end · CPC title

• B41J15/00

  Devices or arrangements {of selective printing mechanisms, e.g. ink-jet printers or thermal printers,} specially adapted for supporting or handling copy material in continuous form, e.g. webs · CPC title