Printing apparatus and printing method
AssigneeCanon Kabushiki Kaisha
InventorsTakuya Fukasawa, Yoshiaki Murayama, Satoshi Azuma, Minoru Teshigawara
Life of this patent
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Abstract
Printed products can be efficiently sorted into non-defective ones and defective ones even when a discharge failure occurs during the printing operation. Two inspection patterns for detecting discharge failure are printed before and after a plurality of images. The inspection patterns are read to determine the type of discharge failure. Printed media are sorted based on whether it is determined that there is a continuous discharge failure, whether it is determined that there is an accidental discharge failure, or whether it is determined that the discharge is normal.
Claims20
A printing apparatus comprising:
- a printhead having nozzles for printing a plurality of images and inspection patterns on a continuous print medium;
- a reading unit configured to read and inspect the inspection patterns;
- a cut unit configured to cut the continuous print medium on which the plurality of images are printed to form a print product;
- a discharge unit configured to discharge the print product;
- and
- a control unit configured to, based on inspection results of two successive inspection patterns inspected by said reading unit, control said discharge unit to discharge the print product which is printed between the two successive inspection patterns discriminately from another print product.
A method for printing with a printhead for discharging ink, comprising:
- printing a plurality of images and inspection patterns on a continuous print medium;
- reading and inspecting the inspection patterns;
- forming a print product by cutting the continuous print medium on which the plurality of images are printed;
- and
- discharging, based on inspection results of two successive inspection patterns, the print product which is printed between the two successive inspection patterns discriminately from another print product.
A printing apparatus comprising:
- a printhead having nozzles for printing a plurality of images and inspection patterns on a continuous print medium;
- a reading unit configured to read and inspect the inspection patterns;
- a cut unit configured to cut the continuous print medium on which the plurality of images are printed to form a print product;
- and
- a discharge unit configured to discharge the print product,
- wherein the discharge unit discharges the print product formed between two successive inspection patterns in a case where a result of inspecting the two successive inspection patterns is a first result discriminately from the print product formed between two successive inspection patterns in a case where the result of inspecting the two successive inspection patterns is a second result different from the first result.
A printing apparatus comprising:
- a printhead having nozzles for printing a plurality of images and inspection patterns on a print medium;
- a reading unit configured to read and inspect the inspection patterns;
- and
- a discharge unit configured to discharge the print medium which has been printed,
- wherein the discharge unit discharges the print medium which has been printed between two successive inspection patterns in a case where a result of inspecting the two successive inspection patterns is a first result discriminately from the print medium which has been printed between two successive inspection patterns in a case where the result of inspecting the two successive inspection patterns is a second result different from the first result.
A print product processing apparatus comprising:
- a reading unit configured to read and inspect inspection patterns printed on a continuous print medium;
- a cut unit configured to cut the continuous print medium on which a plurality of images are printed to form a print product;
- and
- a discharge unit configured to discharge the print product,
- wherein the discharge unit discharges the print product formed between two successive inspection patterns in a case where a result of inspecting the two successive inspection patterns is a first result discriminately from the print product formed between two successive inspection patterns in a case where the result of inspecting the two successive inspection patterns is a second result different from the first result.
Dependencies are inferred from the claim text.