Abstract: A sheet storage apparatus includes a storage apparatus body, a sheet stacking portion, a rear end regulation member, and a rear end regulation attachment. The sheet stacking portion has an opening opened in an upward and downward direction, and is movable upward and downward with respect to a bottom portion of the storage apparatus body. The rear end regulation attachment is detachably attached to the rear end regulation member, which regulates an upstream end position in the sheet feed direction of the sheet stacked on the sheet stacking portion. The rear end regulation attachment includes a regulating portion that extends toward the bottom portion through the opening. The rear end regulation attachment regulates the upstream end of the sheet on a position downstream, in the sheet feed direction, of a regulating position of the rear end regulation member.

Abstract: An image forming apparatus includes: a sheet storage portion having a sheet stacking portion, a sheet feed portion, a drive portion configured to be capable of switching a lifting speed when lifting the sheet stacking portion between a first lifting speed and a second lifting speed, a height detecting portion configured to be capable of detecting the fact that the sheet reaches a decelerating position for switching the lifting speed of the sheet stacking portion from the first lifting speed to the second lifting speed, a time counting portion, and a control unit.

Abstract: An image forming apparatus includes: a sheet storage portion having a sheet stacking portion, a sheet feed portion, a drive portion configured to be capable of switching a lifting speed when lifting the sheet stacking portion between a first lifting speed and a second lifting speed, a height detecting portion configured to be capable of detecting the fact that the sheet reaches a decelerating position for switching the lifting speed of the sheet stacking portion from the first lifting speed to the second lifting speed, a time counting portion, and a control unit.

Abstract: An imaging apparatus includes a plurality of photoelectric conversion units configured to output an image signal obtained by executing photoelectric conversion and a noise signal; a clipping unit configured to clip the noise signal to a clipping level when the noise signal exceeds a preset clipping level; a control unit configured to calculate the clipping level based on a signal read from the plurality of photoelectric conversion units and set the calculated clipping level to the clipping unit as the preset clipping level; and a differential unit configured to execute differential processing of subtracting a noise signal read from the photoelectric conversion unit and clipped by the clipping unit, from an image signal read from the plurality of the photoelectric conversion units.

Abstract: The system control unit executes the following control when switching the mode from the first mode to the second one. When the first accumulation period is shorter than the first readout period, the system control unit controls the image sensor driving circuit and readout circuit so that the sum of the first and second readout periods fits into a 2-frame period. When the first accumulation period is longer than the first readout period, the system control unit controls the image sensor driving circuit and readout circuit so that the sum of the first accumulation period and second readout period fits into a 2-frame period.

Abstract: An imaging apparatus includes a plurality of photoelectric conversion units configured to output an image signal obtained by executing photoelectric conversion and a noise signal; a clipping unit configured to clip the noise signal to a clipping level when the noise signal exceeds a preset clipping level; a control unit configured to calculate the clipping level based on a signal read from the plurality of photoelectric conversion units and set the calculated clipping level to the clipping unit as the preset clipping level; and a differential unit configured to execute differential processing of subtracting a noise signal read from the photoelectric conversion unit and clipped by the clipping unit, from an image signal read from the plurality of the photoelectric conversion units.

Abstract: An imaging apparatus includes a plurality of photoelectric conversion units configured to output an image signal obtained by executing photoelectric conversion and a noise signal; a clipping unit configured to clip the noise signal to a clipping level when the noise signal exceeds a preset clipping level; a control unit configured to calculate the clipping level based on a signal read from the plurality of photoelectric conversion units and set the calculated clipping level to the clipping unit as the preset clipping level; and a differential unit configured to execute differential processing of subtracting a noise signal read from the photoelectric conversion unit and clipped by the clipping unit, from an image signal read from the plurality of the photoelectric conversion units.

Abstract: An object of the present invention is to provide an imaging apparatus capable of obtaining a sufficient resolution in a picture signal for zooming in on an output signal of an image pickup device by means of an electronic zoom process and a control method thereof. To attain this object, a timing generator generates a timing signal for controlling timing for reading charges to an image pickup device and the timing for mixing or transferring the charges. A zoom control portion determines a scaling factor for, by signal processing, expanding or reducing picture data generated based on the output signal of the image pickup device. The zoom control portion also determines the number of mixed pixels and a cutout range of the charges in the image pickup device. A vertical scaling factor control portion controls the timing generator so that mixture of the charges and charge transfer will be compliant with the number of mixed pixels and the cutout range respectively as determined by the zoom control portion.

Abstract: The system control unit executes the following control when switching the mode from the first mode to the second one. When the first accumulation period is shorter than the first readout period, the system control unit controls the image sensor driving circuit and readout circuit so that the sum of the first and second readout periods fits into a 2-frame period. When the first accumulation period is longer than the first readout period, the system control unit controls the image sensor driving circuit and readout circuit so that the sum of the first accumulation period and second readout period fits into a 2-frame period.

Abstract: An imaging apparatus includes a plurality of photoelectric conversion units configured to output an image signal obtained by executing photoelectric conversion and a noise signal; a clipping unit configured to clip the noise signal to a clipping level when the noise signal exceeds a preset clipping level; a control unit configured to calculate the clipping level based on a signal read from the plurality of photoelectric conversion units and set the calculated clipping level to the clipping unit as the preset clipping level; and a differential unit configured to execute differential processing of subtracting a noise signal read from the photoelectric conversion unit and clipped by the clipping unit, from an image signal read from the plurality of the photoelectric conversion units.

Abstract: An object of the present invention is to provide an imaging apparatus capable of obtaining a sufficient resolution in a picture signal for zooming in on an output signal of an image pickup device by means of an electronic zoom process and a control method thereof. To attain this object, a timing generator generates a timing signal for controlling timing for reading charges to an image pickup device and the timing for mixing or transferring the charges. A zoom control portion determines a scaling factor for, by signal processing, expanding or reducing picture data generated based on the output signal of the image pickup device. The zoom control portion also determines the number of mixed pixels and a cutout range of the charges in the image pickup device. A vertical scaling factor control portion controls the timing generator so that mixture of the charges and charge transfer will be compliant with the number of mixed pixels and the cutout range respectively as determined by the zoom control portion.