Abstract: A semiconductor memory device according to an embodiment includes a plurality of strings each including a select transistor and a memory cell that can be set to any one of a plurality of different threshold voltages, a select gate line that is commonly connected to the select transistors of the plurality of strings, a plurality of bit lines that are individually connected to the plurality of strings, a word line that is commonly connected to the memory cells of the plurality of strings, and a control unit configured to execute a write sequence for repeatedly performing a plurality of loops each including a set of a program operation and a verify operation, and a voltage applied to the select gate line in the program operation of a last loop is lower than a voltage applied to the select gate line in the program operation of a first loop.

Abstract: Provided is an image forming apparatus including a temperature sensing circuit to which a temperature sensing element is electrically connected, wherein a surface of a heater on a side where the temperature sensing element is provided is in contact with the inner surface of a film, a heating element is provided in a primary side circuit which is electrically connected to a commercial power supply, and the temperature sensing circuit is electrically insulated from both of the primary side circuit and a secondary side circuit which is electrically insulated from the primary side circuit.

Abstract: An image forming apparatus includes a heater including a heating element, a driving unit that supplies electrical power to the heating element, and a plurality of temperature detection portions, each detecting a temperature of the heater, and being disposed on a first circuit. A control unit controls the driving unit based on the temperatures detected by the plurality of temperature detection portions, the control unit being disposed on a second circuit, which is isolated from the first circuit. A plurality of abnormality detection circuit portions output signals corresponding to the temperatures detected by the plurality of temperature detection portions, and are disposed on the first circuits. In addition, an abnormality transmission circuit portion transmits a signal indicating an abnormality in the heater to the control unit based on the signals output by the abnormality detection circuit portions.

Abstract: A plurality of semiconductor layers have longitudinally a first direction, have a peripheral area surrounded by the plurality of control gate electrodes, and are arranged in a plurality of rows within the laminated body. A controller controls a voltage applied to the control gate electrodes and bit lines. The controller, during a writing operation, applies a first voltage to a first bit line connected to the semiconductor layer positioned in a first row closer to the insulation separating layer, and applies a second voltage larger than the first voltage to a second bit line connected to the semiconductor layer positioned in a second row positioned further from the insulation separating layer with respect to the first row, among the plurality of rows.

Abstract: The power supply apparatus includes a transformer, a switching unit provided on a primary side of the transformer and configured to perform switching operation for converting an input voltage resulting from rectification and smoothing of an AC voltage and outputting an output voltage from a secondary side of the transformer; a first detection unit configured to detect the output voltage, a feedback unit configured to generate a feedback voltage based on the voltage detected by the first detection unit; a control unit configured to control the switching operation of the switching unit based on the feedback voltage generated by the feedback unit; and a second detection unit configured to detect the AC voltage.

Abstract: The power supply apparatus alternately repeats a control between a first control of varying a frequency of switching operation within a predetermined range and for a predetermined cycle according to a frequency determined based on a feedback voltage, and a second control of varying the frequency within a range narrower than the predetermined range or a third control of controlling the frequency to be a constant frequency.

Abstract: A heater of the present invention includes jointed heat generating resistors having a positive temperature characteristic of resistance and provided between a first conductive element and a second conductive element on a substrate in a longitudinal direction of the substrate, and a plurality of heating blocks provided in the longitudinal direction, each of which is a set of the first conductive element, the second conductive element, and the heat generating resistor, and power supplied to at least one of the plurality of heating blocks can be controlled independent of other heating blocks.

Abstract: The power supply apparatus, when a switching element is driven at a second frequency lower than a first frequency, determines a duty of a pulse signal according to a predetermined voltage so that a frequency of the pulse signal input to a feedback unit is equal to or more than a predetermined frequency.

Abstract: A semiconductor memory device includes a first memory cell transistor, a second memory cell transistor, and a third memory cell transistor that are connected in series. A word line is coupled to a gate of the third memory cell transistor. A controller is configured to set a first upper limit value for voltages applied to the word line during writing of data to the first memory cell transistor and a second upper limit value for voltages applied to the word line during writing of data to the second memory cell transistor. The second upper limit value is different from the first upper limit value.

Abstract: In an image heating device having a plurality of heating blocks which are controllable independently in a longitudinal direction of a heater, an increase of the size of the heater can be suppressed, and temperatures of a plurality of heating block can be detected. A heater has a first temperature sensor corresponding to a first heating block, a second temperature sensor corresponding to a second heating block, a first electric conductor electrically coupled to the first temperature sensor, a second electric conductor electrically coupled to the second temperature sensor, and a common electric conductor electrically coupled to the first and second temperature sensors.

Abstract: The present invention relates to an image heating apparatus that includes a heater including a plurality of independently controllable heating blocks in a longitudinal direction thereof, each including a first conductor, a second conductor, and a heating element. At least one of electrodes corresponding to the respective heating blocks is disposed in an area where the heating element is located in the longitudinal direction on a second surface of the heater that is opposite to a first surface that comes into contact with an endless belt. An electrical contact is arranged so as to face the second surface of the heater. An overheating occurring in a no-media passage portion when an image formed on a recording material having a small size is heated is suppressed or reduced.

Abstract: The power supply apparatus includes a transformer, at least one switching element provided on a primary side of the transformer and configured to perform a switching operation to output an output voltage from a secondary side of the transformer, and a control unit configured to determine a turn-on time of a pulse signal for controlling the switching element for each of first cycles, and perform a predetermined control in which a change value of the turn-on time of the pulse signal for each of second cycles each including the first cycles becomes smaller than a change value of the turn-on time of the pulse signal for each of the first cycles, to change the second cycle depending on operation states.

Abstract: A heater of the present invention includes jointed heat generating resistors having a positive temperature characteristic of resistance and provided between a first conductive element and a second conductive element on a substrate in a longitudinal direction of the substrate, and a plurality of heating blocks provided in the longitudinal direction, each of which is a set of the first conductive element, the second conductive element, and the heat generating resistor, and power supplied to at least one of the plurality of heating blocks can be controlled independent of other heating blocks.

Abstract: In a heater including a plurality of first temperature detection elements that are arranged at predetermined intervals in a longitudinal direction of a substrate and respectively output temperature signals individually, and a plurality of second temperature detection elements that are arranged at predetermined intervals in positions that differ from the positions of the first temperature detection elements in a lateral direction that is orthogonal to the longitudinal direction but correspond to the positions of at least some of the plurality of first temperature detection elements in the longitudinal direction, and that output a single temperature signal obtained by adding individual temperature signals together, the individual temperature signals included in the single temperature signal are acquired on the basis of the plurality of temperature signals output by the plurality of first temperature detection elements and the single temperature signal.

Abstract: In an image heating device having a plurality of heating blocks which are controllable independently in a longitudinal direction of a heater, an increase of the size of the heater can be suppressed, and temperatures of a plurality of heating block can be detected. A heater has a first temperature sensor corresponding to a first heating block, a second temperature sensor corresponding to a second heating block, a first electric conductor electrically coupled to the first temperature sensor, a second electric conductor electrically coupled to the second temperature sensor, and a common electric conductor electrically coupled to the first and second temperature sensors.

Abstract: The switching power supply apparatus including a transformer includes a detection unit configured to detect that the power supply apparatus malfunctions and a first holding unit configured to turn off a first switching element and holds the first switching element at turn-off condition, and when the detection unit detects that malfunction occurs, the first holding unit releases the first switching element from the turn-off condition at a timing when the control unit turns on the second switching element by a second control signal.

Abstract: An image forming apparatus includes a control circuit having a plurality of semiconductor elements configured to perform switching between ON and OFF of a plurality of heat generating blocks, and a power interrupting unit configured to be activated so as to interrupt power being supplied to the plurality of semiconductor elements when a heater overheats. Of the plurality of semiconductor elements, a first semiconductor element to supply power to a first heat generating block, is connected, in series, to a second semiconductor element to supply power to a second heat generating block. In addition, when the power interrupting unit is not activated, the second heat generating block is controlled by controlling only the second semiconductor element, and, when the power interrupting unit is not activated, the first heat generating block is controlled by controlling the first semiconductor element and the second semiconductor element.

Abstract: The present invention relates to an image heating apparatus that includes a heater including a plurality of independently controllable heating blocks in a longitudinal direction thereof, each including a first conductor, a second conductor, and a heating element. At least one of electrodes corresponding to the respective heating blocks is disposed in an area where the heating element is located in the longitudinal direction on a second surface of the heater that is opposite to a first surface that comes into contact with an endless belt. An electrical contact is arranged so as to face the second surface of the heater. An overheating occurring in a no-media passage portion when an image formed on a recording material having a small size is heated is suppressed or reduced.

Abstract: According to one embodiment, a memory controller transmits a first instruction to a memory device. The memory device includes cell transistors; word lines coupled to gates of the cell transistors; a first data latch; and a second latch. The first instruction instructs application of a positive voltage to one of the word lines. The memory controller transmits a second instruction after the transmission of the first instruction and before transmitting a third instruction. The third instruction instructs output of data from the memory device. The second instruction is different from the third instruction and a fourth instruction instructing copy of data from the first data latch to the second data latch.

Abstract: The power supply apparatus includes a control unit configured to perform control of gradually changing a turn-on duty of a first switching element when a first voltage mode is switched to a second voltage mode or when the second voltage mode is switched to the first voltage mode.