Facsimile apparatus with controllable pixel density for image formation

Claim 2

A facsimile apparatus which is capable of transmitting data in at least two selected communication standard modes, comprising: instruction means for providing instructions as to the communication standard of the receiving facsimile apparatus; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 3

A facsimile apparatus according to claim 1, wherein said image reading means includes a photoelectric conversion means for reading an original image document, frequency converting means for converting the frequency of a synchronizing clock signal of said photoelectric conversion means, and image conveying means for conveying said original image document over an alterable distance be conveyed.

Claim 4

A facsimile apparatus which is capable of transmitting and receiving data in at least two selected communication standard modes, comprising: receiving means provided to conform to the communication receive standards; determination means for determining the communication standard of the image signal received by said receiving means; decoding means for decoding said image signal received in accordance with the results of determination made by said determination means; recording means capable of recording the decoded image data at a modified recording density; recording density converting means for converting the recording density of said recording means in accordance with the results of determination made by said determination means; instruction means for providing instructions as to the communication standard of a receiving facsimile apparatus; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 5

A facsimile apparatus which is capable of transmitting and receiving data in at least two selected communication standard modes, comprising: receiving means provided to conform to the communication receive standards; determination means for determining the communication standard of the image signal received by said receiving means; decoding means for decoding said image signal received in accordance with the results of determination made by said determination means; recording means capable of recording the decoded image data at a modified recording density; recording density converting means for converting the recording density of said recording means in accordance with the results of determination made by said determination means; instruction means for providing instructions as to the communication standard of a receiving facsimile apparatus; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 6

A facsimile apparatus according to claim 3, wherein said recording means is a printing device that employs an electrophotographic recording process, and wherein said recording density is modified by changing the speed at which light scans a photosensitive body.

Claim 7

A facsimile apparatus according to claim 3, wherein said image reading means includes photoelectric conversion means for reading an original image document, frequency converting means for converting the frequency of a synchronizing clock signal of said photoelectric conversion means, and image conveying means for conveying said original image document over an alterable distance.

Claim 8

A facsimile apparatus which is capable of transmitting data selectively in either of the G3 or G4 communication standard modes, comprising: instruction means for providing instructions as to whether a receiving facsimile apparatus is a G3 or G4 machine; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 9

A facsimile apparatus which is capable of transmitting data selectively in either of the G3 or G4 communication standard modes, comprising: instruction means for providing instructions as to whether a receiving facsimile apparatus is a G3 or G4 machine; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 10

A facsimile apparatus which is capable of transmitting and receiving data selectively in either of the G3 or G4 communication standard modes, comprising: receiving means provided to correspond with both the G3 and G4 communication standards; determination means for determining whether the image signal received by said receiving means conforms to the G3 or G4 communication standard; decoding means for decoding said image signal received in accordance with the results of determination made by said determination means; recording means capable of recording the decoded image data at a modified recording density conforming to either the G3 or G4 standard; recording density converting means for converting the recording density of said recording means in accordance with the results of determination made by said determination means; instruction means for providing instructions as to whether a receiving facsimile apparatus is a G3 or G4 machine; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 11

A facsimile apparatus which is capable of transmitting and receiving data selectively in either of the G3 or G4 communication standard modes, comprising: receiving means provided to correspond with both the G3 and G4 communication standards; determination means for determining whether the image signal received by said receiving means conforms to the G3 or G4 communication standard; decoding means for decoding said image signal received in accordance with the results of determination made by said determination means; recording means capable of recording the decoded image data at a modified recording density conforming to either the G3 or G4 standard; recording density converting means for converting the recording density of said recording means in accordance with the results of determination made by said determination means; instruction means for providing instructions as to whether a receiving facsimile apparatus is a G3 or G4 machine; image reading means in which the pixel density with which an original document is read can be modified; control means for controlling said image reading means to modify the pixel density in accordance with the instruction from said instruction means; encoding means for encoding an image signal from said image reading means in accordance with the instruction from said instruction means; and transmission means for transmitting the encoded image signal in conformity with the communication standard of said receiving facsimile apparatus.

Claim 12

A facsimile apparatus in which the pixel density of image data received or to be transmitted can be converted when the image received or to be transmitted is to be formed, comprising: reading means for photoelectrically reading a document image at a fixed pixel density; conversion means for converting the pixel density of the image data from said reading means; manual instruction means for instructing said conversion means to execute or not to execute conversion of the pixel density; and transmission means for encoding and transmitting the image data whose pixel density has been converted by said conversion means, in a case where said instruction means instructs said conversion means to execute conversion of the pixel density, and for transmitting the image data whose pixel density has not been converted, in a case where said instruction means has not instructed conversion.

Claim 13

A facsimile apparatus in which the pixel density of image data received or to be transmitted can be converted when the image received or to be transmitted is to be formed, comprising: reading means for photoelectrically reading a document image at a fixed pixel density; conversion means for converting the pixel density of the image data from said reading means; manual instruction means for instructing said conversion means to execute or not to execute conversion of the pixel density; and transmission means for encoding and transmitting the image data whose pixel density has been converted by said conversion means, in a case where said instruction means instructs said conversion means to execute conversion of the pixel density, and for transmitting the image data whose pixel density has not been converted, in a case where said instruction means has not instructed conversion.

Claim 14

A facsimile apparatus capable of receiving an image signal in conformity with both a first and a second communication standard, comprising: receiving means for receiving a facsimile image signal; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a fixed pixel density conforming to either the first or the second communication standard; converting means for converting the pixel density of the received image data so that it conforms to the fixed pixel density of said recording means; and manual selection means for selecting to execute or not to execute conversion of the pixel density of the received image data by said converting means when the fixed pixel density of said recording means does not conform to the pixel density of the received image data, wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data, said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 15

A facsimile apparatus capable of receiving an image signal in conformity with both a first and a second communication standard, comprising: receiving means for receiving a facsimile image signal; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a fixed pixel density conforming to either the first or the second communication standard; converting means for converting the pixel density of the received image data so that it conforms to the fixed pixel density of said recording means; and manual selection means for selecting to execute or not to execute conversion of the pixel density of the received image data by said converting means when the fixed pixel density of said recording means does not conform to the pixel density of the received image data, wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data, said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 16

A facsimile apparatus capable of transmitting and receiving in conformity with both a first and a second communication standard, comprising: reading means for photoelectrically reading a document image at a first fixed pixel density conforming to either the first or the second communication standard; first converting means for converting the first fixed pixel density of the image data from said reading means; transmission means for encoding and transmitting the image data whose pixel density has been converted by said first converting means or the image data whose pixel density has not been converted; receiving means for receiving a facsimile image signal; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a second fixed pixel density conforming to either the first or the second communication standard; second converting means for converting the pixel density of the received image data so that it conforms to the second fixed pixel density of said recording means; and manual selection means for selecting to execute or not to execute conversion of the pixel density of the image data by said first converting means or said second converting means when the first fixed pixel density of said reading means does not conform to the pixel density of a transmitting facsimile apparatus, or the second fixed pixel density of said recording means does not conform to the pixel density of the received image data; wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data, said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 17

A facsimile apparatus capable of transmitting and receiving in conformity with both a first and a second communication standard, comprising: reading means for photoelectrically reading a document image at a first fixed pixel density conforming to either the first or the second communication standard; first converting means for converting the first fixed pixel density of the image data from said reading means; transmission means for encoding and transmitting the image data whose pixel density has been converted by said first converting means or the image data whose pixel density has not been converted; receiving means for receiving a facsimile image signal; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a second fixed pixel density conforming to either the first or the second communication standard; second converting means for converting the pixel density of the received image data so that it conforms to the second fixed pixel density of said recording means; and manual selection means for selecting to execute or not to execute conversion of the pixel density of the image data by said first converting means or said second converting means when the first fixed pixel density of said reading means does not conform to the pixel density of a transmitting facsimile apparatus, or the second fixed pixel density of said recording means does not conform to the pixel density of the received image data; wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data, said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 18

A facsimile apparatus which is capable of transmitting and receiving an image signal in conformity with both the G3 and G4 communication standards, comprising: reading means for photoelectrically reading a document image at a first pixel density conforming to either the G3 or the G4 communication standard; first converting means for converting the pixel density of the image data from said reading means to the pixel density of a communication standard which is different from the first pixel density of said reading means; transmission means for encoding and transmitting the image data whose pixel density has been converted by said first conversion means or the image data whose pixel density has not been converted: receiving means for receiving a facsimile image signal in conformity with either the G3 or the G4 communication standard; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a second fixed pixel density in conformity with either the G3 or the G4 communication standard; second converting means for converting the pixel density of the received image data so that it conforms to the second pixel density of said recording means; and manual selection means for manually selecting and instructing both of said first and second converting means either to execute or not to execute conversion of the pixel density when the first fixed pixel density of said reading means does not conform to the pixel density of a current communication standard, or the second fixed pixel density of said recording means does not conform to the pixel density of the received image data, wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 19

A facsimile apparatus which is capable of transmitting and receiving an image signal in conformity with both the G3 and G4 communication standards, comprising: reading means for photoelectrically reading a document image at a first pixel density conforming to either the G3 or the G4 communication standard; first converting means for converting the pixel density of the image data from said reading means to the pixel density of a communication standard which is different from the first pixel density of said reading means; transmission means for encoding and transmitting the image data whose pixel density has been converted by said first conversion means or the image data whose pixel density has not been converted: receiving means for receiving a facsimile image signal in conformity with either the G3 or the G4 communication standard; decoding means for decoding the image signal received by said receiving means and thereby converting it into received image data; recording means for recording the received image data at a second fixed pixel density in conformity with either the G3 or the G4 communication standard; second converting means for converting the pixel density of the received image data so that it conforms to the second pixel density of said recording means; and manual selection means for manually selecting and instructing both of said first and second converting means either to execute or not to execute conversion of the pixel density when the first fixed pixel density of said reading means does not conform to the pixel density of a current communication standard, or the second fixed pixel density of said recording means does not conform to the pixel density of the received image data, wherein if said manual selection means selects to execute conversion of the pixel density, the pixel density of the received image data is converted to conform to the fixed pixel density of said recording means, and if said manual selection means does not select to execute conversion of the pixel density of the received image data said recording means records the received image data without conversion of the pixel density of the received image data.

Claim 20

A facsimile apparatus according to claim 10, wherein said first fixed pixel density and said second fixed pixel density are equal.

Claim 21

A facsimile apparatus according to claim 11, wherein said first fixed pixel density and said second fixed pixel density are equal.