Imaging apparatus, control method for the imaging apparatus, and storage medium

A control method for an imaging apparatus that includes a blade member configured to open and close an exposure opening, a drive member configured to drive the blade member, a first urging member configured to force the blade member, and to change the blade member to a charge state according to a rotation of the drive member, a motor configured to drive the drive member, an image sensor located at a position corresponding to the exposure opening, a controller configured to control the motor and the image sensor, a blade moving member configured to move between an open position for opening the exposure opening and a closed position for closing the exposure opening, a cam member having a driving cam that contacts the drive member, and an engaging member configured to lock the blade moving member at the closed position and operate in association with the cam member, the control method comprising the steps of controlling the motor and the image sensor,

• wherein the controlling step rotates the motor in a first direction as reading of a signal corresponding to first imaging starts for one frame using the image sensor, and changes the blade member to the charge state according to a charging of the first urging member,
• wherein the controlling step rotates the motor in a second direction reverse to the first direction after a change of the blade member to the charge state by the first urging member is completed, completes reading the signal corresponding to the first imaging before opening the exposure opening, and stops rotating the motor in the second direction, and
• wherein the control method further comprises:
• driving, by the drive member, the blade moving member so that the blade moving member moves from the open position to the closed position;
• changing, by the first urging member, the blade member to the charge state when charged as a result of the drive cam contacting the drive member;
• performing, by the controller, a charge operation that charges the first urging member by the cam member as a result of the motor being rotated in the first direction, and stops the motor when the cam member has a first phase;
• providing, by the controller, a releasing operation that rotates the motor in the second direction after standing by a first predetermined time after the charge operation is completed, and stops the motor when the cam member has a second phase, wherein the releasing operation includes a discharge operation that releases the charge of the first urging member, and an unlock operation that unlocks the blade moving member at the closed position by the engaging member after the discharge operation;
• closing, by the blade member, the exposure opening from when the charge operation starts to when the unlock operation starts;
• and
• completing, by the controller, an electric charge reading from the image sensor before the unlock operation starts.

A non-transitory computer-readable storage medium that stores a program for causing a computer to execute each process of a method for controlling an imaging apparatus that includes a blade member configured to open and close an exposure opening, a drive member configured to drive the blade member, a first urging member configured to force the blade member, and to change the blade member to a charge state according to a rotation of the drive member, a motor configured to drive the drive member, and an image sensor located at a position corresponding to the exposure opening, a controller configured to control the motor and the image sensor, a blade moving member configured to move between an open position for opening the exposure opening and a closed position for closing the exposure opening, a cam member having a driving cam that contacts the drive member, and an engaging member configured to lock the blade moving member at the closed position and operate in association with the cam member, the control method comprising the steps of controlling the motor and the image sensor,

• wherein the controlling step rotates the motor in a first direction as reading of a signal corresponding to first imaging starts for one frame using the image sensor, and changes the blade member to the charge state according to a charging of the first urging member,
• wherein the controlling step rotates the motor in a second direction reverse to the first direction after a change of the blade member to the charge state by the first urging member is completed, completes reading the signal corresponding to the first imaging before opening the exposure opening, and stops rotating the motor in the second direction and
• wherein the control method further comprises:
• driving, by the drive member, the blade moving member so that the blade moving member moves from the open position to the closed position;
• changing, by the first urging member, the blade member to the charge state when charged as a result of the drive cam contacting the drive member;
• performing, by the controller, a charge operation that charges the first urging member by the cam member as a result of the motor being rotated in the first direction, and stops the motor when the cam member has a first phase;
• providing, by the controller, a releasing operation that rotates the motor in the second direction after standing by a first predetermined time after the charge operation is completed, and stops the motor when the cam member has a second phase, wherein the releasing operation includes a discharge operation that releases the charge of the first urging member, and an unlock operation that unlocks the blade moving member at the closed position by the engaging member after the discharge operation;
• closing, by the blade member, the exposure opening from when the charge operation starts to when the unlock operation starts;
• and
• completing, by the controller, an electric charge reading from the image sensor before the unlock operation starts.