JP2004202872A5 - Printing apparatus and control method thereof - Google Patents

Claims (11)

An ink tank containing a predetermined volume of ink;
An ink jet head for receiving a supply of ink from the ink tank for printing;
Remaining amount detection means for detecting the remaining amount of ink in the ink tank;
Evaporation amount estimating means for estimating the evaporation amount of the ink in the ink tank;
Calculating means for calculating the density of the ink based on the remaining amount of ink detected by the remaining amount detecting means and the evaporation amount of the ink estimated by the evaporation amount estimating means;
A printing apparatus comprising: density correction means for performing density correction at the time of printing based on the density of ink calculated by the calculation means. The printing apparatus according to claim 1, wherein the evaporation amount estimation unit estimates the evaporation amount of the ink based on at least one of an environmental temperature, an environmental humidity, and an elapsed time from the previous printing. The printing apparatus according to claim 1, wherein the calculation unit calculates an ink density immediately before printing. The printing apparatus may be detachably mounted with a replacement member including an ink storage unit for storing ink, and the ink tank stores the ink supplied from the ink storage unit. The printing device described in. The printing apparatus according to claim 4, wherein the ink tank is capable of containing an amount of ink capable of image recording on at least one sheet of print medium printable by the printing apparatus. The printing apparatus further comprises control means for supplying ink from the ink storage unit to the ink tank before printing on the print medium, and the calculation unit is configured to supply the ink tank from the ink storage unit before printing. 6. The printing apparatus according to claim 5, wherein the density of the ink when ink is supplied is calculated. The printing apparatus according to any one of claims 4 to 6, wherein the exchange member can accommodate a print medium. The printing apparatus according to claim 1, wherein the correction of the density by the density correction unit is not performed when the elapsed time from the previous printing does not exceed the predetermined time. A control method of a printing apparatus for controlling a printing apparatus provided with an ink tank containing a predetermined volume of ink and an ink jet head for receiving supply of ink from the ink tank and performing printing,
A remaining amount detection step of detecting the remaining amount of ink in the ink tank;
An evaporation amount estimation step of estimating the evaporation amount of the ink in the ink tank;
Calculating the density of the ink based on the remaining amount of ink detected in the remaining amount detecting step and the evaporation amount of the ink estimated in the evaporation amount estimating step;
A control method of a printing apparatus, comprising: a density correction step of performing density correction at the time of printing based on the density of ink calculated in the calculation step. 10. The control of the printing apparatus according to claim 9, wherein in the evaporation amount estimation step, the evaporation amount of the ink is estimated based on at least one of the environmental temperature, the environmental humidity, and the elapsed time from the previous printing. Method. 10. The control method of the printing apparatus according to claim 9, wherein in the calculating step, the ink density immediately before printing is calculated.