Production method of printer
Provided is a production method of a printer that detects an amount of ink in an ink tank by using a light source and a photoelectric conversion device, the method including a first step of irradiating the ink tank with light by the light source in a state where the ink tank is not filled with ink to detect light from the ink tank by using the photoelectric conversion device, and a second step of storing a first correction parameter of an output of the photoelectric conversion device in a non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the first step.
1. A production method of a printer that detects an amount of ink in an ink tank by using a light source and a photoelectric conversion device, the method comprising:
a first step of irradiating the ink tank with light by the light source in a state where the ink tank is not filled with ink to detect light from the ink tank by using the photoelectric conversion device;
a second step of storing a first correction parameter of an output of the photoelectric conversion device in a non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the first step;
a third step of detecting light from the ink tank by using the photoelectric conversion device in a state of not emitting light by the light source; and
a fourth step of storing a second correction parameter of the output of the photoelectric conversion device in the non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the third step.
2. The production method of a printer according to claim 1 , wherein
the second correction parameter is a black reference parameter.
3. The production method of a printer according to claim 1 , wherein
the first correction parameter is a normalization parameter of the output of the photoelectric conversion device.
4. A production method of a printer wherein that detects an amount of ink in an ink tank by using a light source and a photoelectric conversion device, the method comprising:
a first step of irradiating the ink tank with light by the light source in a state where the ink tank is not filled with ink to detect light from the ink tank by using the photoelectric conversion device; and
a second step of storing a first correction parameter of an output of the photoelectric conversion device in a non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the first step, wherein
the first correction parameter is a white reference parameter.
5. The production method of a printer according to claim 4 , further comprising:
a third step of irradiating the ink tank with light by the light source in a state where the ink tank is filled with the ink to detect light from the ink tank by using the photoelectric conversion device; and
a fourth step of storing a second correction parameter of the output of the photoelectric conversion device in the non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the third step.
6. The production method of a printer according to claim 5 , wherein
the second correction parameter is a black reference parameter.
7. A production method of a printer that detects an amount of ink in an ink tank having a mark at a side surface of the ink tank, by using a light source and a photoelectric conversion device, the method comprising:
a first step of irradiating the ink tank with light by the light source in a state where the ink tank is not filled with ink to detect light from the ink tank by using the photoelectric conversion device;
a second step of storing a first correction parameter of an output of the photoelectric conversion device in a non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the first step; and
third step of storing, based on the output of the photoelectric conversion device in the first step, a second correction parameter indicating a position of the mark in the non-volatile storage unit of the printer.