Power supply device for communication apparatus

A power supply device for a communication apparatus, comprising:

• a main power supply for receiving power from and AC source and supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• and
• constant voltage generation means for maintaining an output voltage from said battery constant,
• wherein, when said main power supply is ON, said main power supply control means receives power supplied from said main power supply, and when said main power supply is OFF, said main power supply control means receives power supplied from said battery via said constant voltage generation means, wherein said communication apparatus comprises an image communication apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for receiving power from and AC source and supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• and
• constant voltage generation means for maintaining an output voltage from said battery constant,
• wherein, when said main power supply is ON, said main power supply control means receives power supplied from said main power supply, and when said main power supply is OFF, said main power supply control means receives power supplied from said battery via said constant voltage generation means, wherein said communication apparatus comprises a facsimile apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• reading means for reading a document sheet;
• and
• sheet detection means for detecting presence/absence of a document sheet,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said sheet detection means intermittently performs detection of a document sheet when said main power supply is OFF, and said main power supply control means turns on said main power supply in correspondence with a detection result provided by said sheet detection means.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• reading means for reading a document sheet;
• and
• sheet detection means for detecting presence/absence of a document sheet,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said sheet detection means intermittently performs detection of a document sheet when said main power supply is OFF, and said main power supply control means turns on said main power supply in correspondence with a detection result provided by said sheet detection means, wherein said communication apparatus comprises an image communication apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• reading means for reading a document sheet;
• and
• sheet detection means for detecting presence/absence of a document sheet,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said sheet detection means intermittently performs detection of a document sheet when said main power supply is OFF, and said main power supply control means turns on said main power supply in correspondence with a detection result provided by said sheet detection means, wherein said communication apparatus comprises a facsimile apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply means, having a timer, for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• clock means for measuring time;
• and display means for displaying the time,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said display means displays the time measured by said clock means when said main power supply is ON, and said display means displays the time measured by said timer of said main power supply control means when said main power supply is OFF.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply means, having a timer, for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• clock means for measuring time;
• and
• display means for displaying the time,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said display means displays the time measured by said clock means when said main power supply is ON, and said display means displays the time measured by said timer of said main power supply control means when said main power supply is OFF, wherein said communication apparatus comprises an image communication apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply means, having a timer, for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• clock means for measuring time;
• and
• display means for displaying the time,
• wherein said main power supply control means receives power supplied from said main power supply when said main power supply is ON, said main power supply control means receives power supplied from said battery when said main power supply is OFF, said display means displays the time measured by said clock means when said main power supply is ON, and said display means displays the time measured by said timer of said main power supply control means when said main power supply is OFF, wherein said communication apparatus comprises a facsimile apparatus.

A power supply device comprising:

• a main power supply for supplying power to each unit of an apparatus main body upon reception of an input power;
• main power supply control means for ON/OFF-controlling said main power supply;
• power detection means for detecting presence/absence of power supplied to said main power supply;
• state holding means for, when the power input to said main power supply changes from an absence state to a presence state, turning on said main power supply for a predetermined period of time required for initializing said main power supply control means so as to supply power to said main power supply control means;
• and
• reset means for resetting said state holding means when said power detecting means detects that the power changes from a presence state to an absence state.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• console means operated by an operator;
• and
• producing means for producing a confirmation sound in response to an operation of said console means,
• wherein said main power supply control means detects whether or not said console means is operated, and controls said producing means to generate the confirmation sound in correspondence a detection result, and
• said main power supply control means receives power supplied from said main power supply when said main power supply is ON, and said main power supply control means receives a power supplied from said battery when said main power supply is OFF.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• console means operated by an operator;
• and
• producing means for producing a confirmation sound in response to an operation of said console means,
• wherein said main power supply control means detects whether or not said console means is operated, and controls said producing means to generate the confirmation sound in correspondence a detection result, and
• said main power supply control means receives power supplied from said main power supply when said main power supply is ON, and said main power supply control means receives a power supplied from said battery when said main power supply is OFF, wherein said communication apparatus comprises an image communication apparatus.

A power supply device for a communication apparatus, comprising:

• a main power supply for supplying power to each unit of a communication apparatus main body;
• main power supply control means for ON/OFF-controlling said main power supply;
• a battery for supplying power to said main power supply control means;
• console means operated by an operator;
• and
• producing means for producing a confirmation sound in response to an operation of said console means,
• wherein said main power supply control means detects whether or not said console means is operated, and controls said producing means to generate the confirmation sound in correspondence a detection result, and
• said main power supply control means receives power supplied from said main power supply when said main power supply is ON, and said main power supply control means receives a power supplied from said battery when said main power supply is OFF, wherein said communication apparatus comprises a facsimile apparatus.

A power supply device comprising:

• a power supply for converting AC power to DC power and outputting the DC power;
• a processor operable by the DC power output from said power supply, said processor being initialized when the DC power is supplied thereto;
• and
• a device for starting re-initialization of said processor in response to an occurrence of an instantaneous turning off of the AC power, the re-initialization starting after the AC power has been restored.

An original document reading apparatus, comprising:

• a reading unit for reading an original sheet;
• a sensor for detecting the presence and absence of the original sheet;
• and
• a processor for enabling and disabling said sensor to detect the presence and absence of the document sheet in a standby mode, and, in reply to a detection of the presence of the document sheet by said sensor, changing the standby mode into an operation mode and causing said sensor to effect continuous detection of the presence and absence of the document sheet.