Printing apparatus and correction method of the printing apparatus
AssigneeCanon Kabushiki Kaisha
InventorKazushi Fujimoto
Life of this patent
Estimating the term…
Abstract
In an apparatus including a first acquisition unit configured to acquire information of an operation amount of a conveyance unit configured to convey a printing medium, a second acquisition unit configured to acquire information of a density of an image printed by a printhead, and a specify unit configured to specify the density of the image based on histogram collection on the information of the density of the image acquired by the second acquisition, the following correction is made. More specifically, a correction value of the information of the operation amount based on a histogram on the acquired information of the operation amount is decided. Then, based on the decided correction value, the acquired information of the operation amount is corrected.
Claims18
An apparatus comprising:
- a first acquisition unit configured to acquire information of an operation of a conveyance unit configured to convey a printing medium;
- a second acquisition unit configured to acquire information of a density of an image printed by a printhead;
- a correction circuit configured to correct the information of the operation acquired by the first acquisition unit;
- a control circuit configured to collect information of input data and control to hold the information of the input data with a predetermined format in a memory;
- a switching circuit configured to switchably connect the control circuit to at least either the first acquisition unit or the second acquisition unit;
- and
- a setting circuit configured to set a correction value to the correction circuit,
- wherein the control circuit corrects the information of the density of the image acquired by the second acquisition unit and controls to hold the information of the density of the image with the predetermined format in the memory,
- wherein the control circuit corrects the information of the operation acquired by the first acquisition unit and controls to hold the information of the density of the image with the predetermined format in the memory,
- the setting circuit determines a correction value of the information of the operation, based on the information of the operation with the predetermined format held in the memory, and
- the correction circuit performs correction based on the correction value set by the setting circuit if the control circuit is connected to the first acquisition unit.
A method of an apparatus including a first acquisition unit configured to acquire information of an operation of a conveyance unit configured to convey a printing medium, a second acquisition unit configured to acquire information of a density of an image printed by a printhead, a correction circuit configured to correct the information of the operation acquired by the first acquisition unit, a control circuit configured to collect information of input data and control to hold the information of the input data with a predetermined format in a memory, a switching circuit configured to switchably connect the control circuit to at least either the first acquisition unit or the second acquisition unit and a setting circuit configured to set a correction value to the correction circuit, the method comprising:
- correcting information of the operation acquired by the first acquisition unit and holding the information of the operation with the predetermined format in the memory, at the control circuit;
- correcting information of the density of the image acquired by the second acquisition unit and holding the information of the density of the image with the predetermined format in the memory, at the control circuit;
- determining a correction value of the information of the operation, based on the information of the operation with the predetermined format held in the memory, at the setting circuit;
- and
- performing correction based on the correction value at the correction circuit if the control circuit is connected to the first acquisition unit.
A non-transitory computer-readable storage medium storing a program that causes a computer to function as an apparatus including a first acquisition unit configured to acquire information of an operation of a conveyance unit configured to convey a printing medium, a second acquisition unit configured to acquire information of a density of an image printed by a printhead, a correction circuit configured to correct the information of the operation acquired by the first acquisition unit, a control circuit configured to collect information of input data and control to hold the information of the input data with a predetermined format in a memory, a switching circuit configured to switchably connect the control circuit to at least either the first acquisition unit or the second acquisition unit and a setting circuit configured to set a correction value to the correction circuit, the program comprising:
- correcting information of the operation acquired by the first acquisition unit;
- holding the information of the operation with a predetermined format in the memory;
- correcting information of the density of the image acquired by the second acquisition unit;
- holding the information of the density of the image with the predetermined format in the memory;
- determining a correction value of the information of the operation, based on the information of the operation with a predetermined format held in the memory;
- and
- performing correction based on the correction value if the control circuit is connected to the first acquisition unit.
Dependencies are inferred from the claim text.