GB2328107A - Self-diagnostic methods for a facsimile - Google Patents

Self-diagnostic methods for a facsimile Download PDF

Info

Publication number
GB2328107A
GB2328107A GB9824145A GB9824145A GB2328107A GB 2328107 A GB2328107 A GB 2328107A GB 9824145 A GB9824145 A GB 9824145A GB 9824145 A GB9824145 A GB 9824145A GB 2328107 A GB2328107 A GB 2328107A
Authority
GB
United Kingdom
Prior art keywords
data
facsimile
printed
cpu
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9824145A
Other versions
GB2328107B (en
GB9824145D0 (en
Inventor
Sang-Cheol Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1019950047554A external-priority patent/KR100195833B1/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of GB9824145D0 publication Critical patent/GB9824145D0/en
Publication of GB2328107A publication Critical patent/GB2328107A/en
Application granted granted Critical
Publication of GB2328107B publication Critical patent/GB2328107B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
    • H04N1/0001—Transmission systems or arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
    • H04N1/00015—Reproducing apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00029—Diagnosis, i.e. identifying a problem by comparison with a normal state
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00047—Methods therefor using an image not specifically designed for the purpose
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/0005—Methods therefor in service, i.e. during normal operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00063—Methods therefor using at least a part of the apparatus itself, e.g. self-testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00071—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for characterised by the action taken
    • H04N1/00074—Indicating or reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00912—Arrangements for controlling a still picture apparatus or components thereof not otherwise provided for
    • H04N1/00915—Assigning priority to, or interrupting, a particular operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/2307—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/2307—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity
    • H04N1/233—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity according to characteristics of the data to be reproduced, e.g. number of lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/2307—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity
    • H04N1/2376—Inhibiting or interrupting a particular operation or device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/2307—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity
    • H04N1/2392—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity for displaying or indicating, e.g. a condition or state
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
    • H04N1/32363—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter at the transmitter or at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
    • H04N1/32363—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter at the transmitter or at the receiver
    • H04N1/32379—Functions of a still picture terminal memory associated with reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32609—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper
    • H04N1/32614—Fault detection or counter-measures, e.g. original mis-positioned, shortage of paper related to a single-mode communication, e.g. at the transmitter or at the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Facsimiles In General (AREA)

Abstract

A facsimile includes a printer with a recording element to print data. An error message is generated if more than a preset number of successive lines are identical.

Description

2328107 SELF-DIAGNOSTIC METHODS FOR A FACSIMILE
Backaround to the Inventio
The present invention relates to self -diagnostic methods for a facsimile and more particularly to method for sensing abnormal data received in a receiving mode or data scanned in a copy mode or transmitting mode.
FIG. 1 is a block diagram of a general facsimile. A CPU 110 controls the overall functions of the facsimile in accordance with a set program once a transmitting mode, a receiving mode or a copy mode is selected. A network control unit (NCU) 112 forms a speech path between a is public subscriber telephone network (PSTN) and a modem 114 under the control of the CPU 110. Modem 114 demodulates analog signals received via NCU 112 into digital signals and modulates digital signals from CPU 110 into analog signals under the control of CPU 110. A scanner 116 scans documents provided for that purpose if the transmitting or copy mode is selected, to convert it into image data, thus supplying the image data to CPU 110.
An operating panel (OPE) 118 consists of a key matrix equipped with a plurality of keys, and provides key data produced by key manipulation to CPU 110. A printer 120 prints data received or to be duplicated under the control of CPU 110. Additionally, a temperature detecting circuit as shown in FIG. 2 is provided in printer 120 to sense the surface temperature of a recording element within the printer 120 and to inform CPU 110 of the result. A memory 122 stores data to be retrieved by the 2 CPU 110.
FIG. 2 is a diagram showing the circuit for sensing the surface temperature of the recording element. A thermistor RT contacts the surface of the recording element and its resistance value varies according to temperature changes caused by heat generated during operation of the recording element. A supply voltage Vcc is divided in accordance with the resistance value of a resistor R1 and thermistor RT and the divided voltage VT is applied to CPU 110 to enable it to check for overheating of the recording element. Voltage VT divided by the resistance value of thermistor RT at room temperature is used as a reference voltage.
is The surface temperature of the recording element rises when black data is printed and becomes excessively hot when two or more pages of black data are successively printed. At this time, the overheat is detected by CPU 110, which blocks the driving of the recording element when, when the voltage VT is higher than a preset voltage.
A self-diagnostic function of the conventional facsimile will now be described with reference to FIGs. 1 and 2.
First, the surface temperature of the recording element is sensed by means of thermistor RT shown in FIG. 2. When black pages are being printed, the surface temperature of the recording element rises if black sheets are printed for a prescribed period (e.g., the time typically taken for printing two or three pages). At this time, the resistance value of thermistor RT rises and the voltage 3 divided by thermistor R, increases. If the surface of the recording element over-heats so that the voltage divided by thermistor R, exceed a preset voltage, the operation of the recording element is suspended to prevent further black pages being printed.
When black data is received, as described above, the receiving or copy mode continues until the voltage divided by the thermistor reaches the preset voltage due 10 to overheating of the recording element. That is, the operation of the recording element is stopped only after at least two or more pages of black output are printed.
Thus, damage resulting from overheating of the recording is element can be prevented, but a significant amount of electrical power is wasted. Furthermore, if the thermistor is defective, the black pages are continuously printed, damaging the recording element and consuming recording paper.
In addition, when the pages printed are blank, due to problems at the sending side or receiving side, blank sheets of paper are not sensed, thus wasting the recording paper and increasing power consumption.
Therefore, it is an object of the present invention to provide improved self-diagnostic methods.
Summary of the Invention
Accordingly, a first embodiment of the present invention provides a selfdiagnostic method for a facsimile which 4 includes a printer with a recording element to print data and a temperature sensor to provide a sensing signal representative of the temperature of the recording element, in which an error message is generated if, when a preset number of lines of a document have been printed, the sensing signal deviates from a reference signal received when the recording element is not being used by no more than a predetermined amount.
Preferably, the method comprises: detecting the sensing signal when a preset number of lines of a document have been printed; comparing the detected signal with the reference signal; and generating an error message when the detected signal and the reference signal deviate from one another by no more than a predetermined amount.
A second embodiment of the invention provides a self- diagnostic method for a facsimile in which an error message is generated if a preset number of consecutive lines of scanned data or data to be printed lie either all above or all below a predetermined reference level.
Preferably, the method comprises:
sensing a line of scanned data or data to be printed; incrementing a first counter if the level of the sensed data is below a reference level; incrementing a second counter if the level of the sensed data is above a reference level; and generating an error reaches a preset number.
message when either count Preferably, the method further comprises resetting the 5 counters when normal line data is sensed.
A third embodiment of the present invention provides a self-diagnostic method for a facsimile having a printer for printing data and a memory for temporarily storing data in which an error message is generated if the given number of consecutive lines of scanned data or data to be printed are the same.
Preferably, the method comprises:
is sensing a line of scanned data or data to be printed; incrementing a counter if the sensed data is the same as the data of the previous line; and generating an error message when the counter reaches a preset number.
Preferably, the counter is reset if the sensed line data is different from the data of the previous line.
Brief Description of the Drawinas
The present invention will now be described by way of example with reference to the accompanying drawings in which: FIG. 1 is a block diagram of a facsimile; 30 FIG. 2 shows a circuit for sensing the surface temperature of a recording element; 6 FIG. 3 shows the waveform of data provided after scanning one line in a facsimile; FIG. 4 is a control flow chart for detecting successive blank sheets of paper in a copy mode; FIG. 5 is a flow control chart for detecting the scanning of error data in a copy mode or transmitting mode; and FIG. 6 is a flow control chart for detecting the reception of the error data in a receiving mode.
Detailed Description of the Preferred Embodiment
The facsimile embodying the present invention may be constructed as has been described with reference to FIGs. 1 and 2. A further detailed description will thus be omitted.
A first embodiment of the present invention will now described with reference to FIGs. 1, 2 and 4. CPU stores a voltage from a temperature sensing circuit shown in FIG. 2 as a reference voltage before printer is operated in step 410. When the printing function be 110 as is initialized in step 412, CPU 110 receives or scans data corresponding to the preset number of lines (about 20mm30mm) to be printed via printer 120 in step 414.
While the data of the preset number of lines is printed, CPU 110 senses whether a voltage different from the reference voltage stored in step 410 is received from the temperature sensing circuit of FIG. 2 in step 416.
The reason of sensing the voltage difference is that, if h 7 normal data is to be printed, the surf ace temperature of the recording element rises and the raised surface temperature increases the resistance value of the thermistor RT -The voltage V, divided according to the increased resistance value of thermistor R T increases and exceeds the reference voltage level. However, if abnormal white data is to be printed, the recording element within printer 120 is neither driven nor subjected to a change of surface temperature. Accordingly, the resistance value of thermistor RT remains at the initial value and the voltage divided by thermistor RT stays at a level close to or identical to the reference voltage. CPU 110 senses that the voltage level remains close or identical to the reference voltage via the temperature sensing circuit, to sense the printing of the blank sheets of paper.
When a voltage difference is sensed in step 416, CPU 110 determines that normal data is printing and proceeds to step 418. In step 418, CPU 110 prints data corresponding to the preset number of lines (of about 120mm-13Omm) from the following line after completing the printing operation in step 414 via printer 120. Then, step 420 determines whether the printing function is finished. if not, CPU 110 proceeds to step 416 to sense the voltage difference. When it is determined that the printing function is finished, CPU 110 proceeds to step 424 to move into a standby mode.
If the voltage having a level identical to the reference voltage is sensed after data corresponding to the preset number of lines is printed in step 416, CPU 110 proceeds 8 to step 422 to provide an error message to informing the user of the error and proceeds to step 424, thus switching into the standby mode.
The error message is output by supplying an alarm sound and printing a message, which informs the user that white data is received, onto the recording paper.
is A second embodiment of the present invention will now be described with reference to FIGs. 1, 3 and 5.CPU 110 determines whether the transmitting mode or copy mode is selected in step 510. Upon selection of the transmitting mode or copy mode, CPU 110 sets a count value (11x11) for counting scan lines equal to one and sets a count value (11y,') for counting the number of lines detected as white data equal to zero in step 512. A count value (11z11) for counting the number of lines detected as black data is set equal into zero.
CPU 110 scans the xth line via a scanner 116 in step 514. When the data from scanner 116 is normal data, the data has the waveform shown in FIG. 3C; when it is white data, it has the waveform shown in FIG. 3A. When it is black data, the waveform as shown in FIG. 3B is produced.
CPU 110 compares whether the data corresponding to the xth line from scanner 116 is below reference level Vref in step 516 to determine whether black data is supplied from scanner 116. The waveform of FIG. 3B corresponding to black data has a signal level below reference level Vref.
9 CPU 110 compares whether the data corresponding to the xth line exceeds reference level Vref in step 522, to determine whether white data is supplied from scanner 116. The waveform of FIG. 3A corresponding to white data has a signal level above reference level Vret.
The case of scanning a normal document in step 514 will be taken as an example. Once the data havingthe waveform shown in FIG. 3C is produced by scanner 116, CPU compares the output data waveform with reference level V,,,, in step 516, and proceeds to step 520. Since black data is not successively scanned in step 520, CPU sets 11z11 to zero, and proceeds to step 522. CPU 110 is compares the output data waveform with reference level Vref in step 522, and proceeds to step 526. CPU 110 sets llyll to zero since white data is not scanned in step 522 and proceeds to step 528. CPU 110 transmits data corresponding to the xth line to the receiving side in the transmitting mode and prints data corresponding to the xth line via printer 120 in the copy mode in step 528.
After 11x11 is incremented on completion of printing, it is determined whether llyll exceeds the preset number of lines in step 532 and whether 11z11 exceeds the preset number of lines in step 536. Also, CPU 110 determines whether there are any following lines to be scanned in step 540. If such lines exist, it proceeds to step 514 to scan the next lines. In step 542, it is determined whether there is a following page to be scanned and, if so, proceeds to step 512 to scan the following page.
The case of scanning a blank document in step 514 will be taken as an example. CPU 110 compares the data having the waveform shown in FIG. 3A from scanner 116 with reference level Vref in step 516, and proceeds to step 520 since it exceeds reference level V,, ,f. Since black data is not scanned in step 520, CPU 110 sets the 11z11 to zero, and proceeds to step 522. CPU 110 compares the output data waveform with reference level Vref in step 522, and proceeds to step 524 since it exceeds reference level Vref. CPU 110 increments llyll and proceeds to step 528.
Upon the completion of steps 528 and 530, CPU 110 is determines whether llyll exceeds the preset number of lines in step 532, and if so proceeds to step 534, thus providing an error message and switching into the standby mode in step 544. Otherwise, steps 536, 540 and 542 are executed.
The case of scanning a black document in step 514 will be taken as an example. CPU 110 compares the data having the waveform as shown in FIG. 3B from scanner 116 with reference level Vrer in step 522 and proceeds to step 518 since it is below reference level V,,,,. CPU 110 increments ITZ11 and proceeds to step 528. Upon the completion of steps 528, 530 and 532, CPU 110 determines whether 11z11 exceeds the preset number of lines in step 536, and if so proceeds to step 538 to provide an error message and switch into the standby mode in step 544.
11 A third embodiment of the invention will now be described with reference to FIGs. 1 and 6. When the receiving mode is selected, CPU 110 sets a count value (91111) for counting the number of lines received equal to one and sets a count value ('In") for counting the number of successive identical lines to zero.
CPU 110 then proceeds to step 614 to determine whether data of one line is received. When data corresponding to one line is received, CPU proceeds to step 618. CPU 110 stores the data corresponding to the received lth line in memory 122 in step 618, and sends the data corresponding to the lth line to printer 120 in step 620.
In addition, CPU 110 compares the data corresponding to the 1-1th line recorded in memory 122 with thedata corresponding to the lth line in step 622 to determine whether they are the same as each other. If so, it is the CPU proceeds to step 624. CPU 110 increments 'In" in step 624. Also, CPU 110 compares whether 'In" is the same as the preset number of lines. If so, an error message is printed in step 628 and the mode is switched to the standby mode in step 634. On the other hand, if black data or white data corresponding to the preset number of lines is not received, CPU 110 increments 11111 in step 632 to proceeds to step 614.
If different data is received, CPU 110 proceeds to step 630 in step 622 to set 'In" equal to one and proceeds to step 632.
12 As described above, printing or transmitting is performed only when accurate data is received or scanned. The printing or transmission of successive lines of white data is blocked to prevent waste of recording paper.
13

Claims (11)

CLAIMS:
1. A self-diagnostic method for a facsimile having a printer for printing data and a memory for temporarily storing data in which an error message is generated if the given number of consecutive lines of scanned data or data to be printed are the same.
2. A method according to claim 1 comprising:
sensing a line of scanned data or data to be printed; incrementing a counter if the sensed data is the same as the data of the previous line; and generating an error message when the counter reaches is a preset number.
3. A method according to claim 2 further comprising resetting the counter if the sensed line data is different from the data of the previous line.
4.
A self-diagnostic method for a facsimile substantially as described with reference to FIGs. 1 and 6 of the accompanying drawings.
5. A selfdiagnostic method for a facsimile which includes a printer with a recording element to print data and a temperature sensor to provide a sensing signal representative of the temperature of the recording element, in which an error message is generated if, when a preset number of lines of a document have been printed, the sensing signal deviates from a reference signal 14 received when the recording element is not being used by no more than a predetermined amount.
6. A self-diagnostic method according comprising: detecting the sensing signal when a preset number of lines of a document have been printed; comparing the detected signal with the reference signal; and generating an error message when the detected signal and the reference signal deviate from one another by no more than a predetermined amount.
to claim 5
7. A self-diagnostic method for a facsimile in which an error message is generated if a preset number of consecutive lines of scanned data or data to be printed lie either all above or all below a predetermined reference level.
8. A method according to claim 7 comprising:
sensing a line of scanned data or data to be printed; incrementing a first counter if the level of the sensed data is below a reference level; incrementing a second counter if the level of the sensed data is above a reference level; and generating an reaches a preset number.
error message when either count
9. A method according to claim 8 further comprising:
resetting the counters when normal line data is is sensed.
10. A self-diagnostic method for a facsimile substantially as described with reference to FIGs 1,2 and 4 of the accompanying drawings.
11. A self-diagnostic method for a facsimile substantially as described with reference to FIGs 1, 3 and 5 of the accompanying drawings.
GB9824145A 1995-12-07 1996-12-05 Self-diagnostic methods for a facsimile Expired - Fee Related GB2328107B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019950047554A KR100195833B1 (en) 1995-12-07 1995-12-07 Self checking method for facsimile
GB9625317A GB2308037B (en) 1995-12-07 1996-12-05 Self-diagnostic methods for a facsimile

Publications (3)

Publication Number Publication Date
GB9824145D0 GB9824145D0 (en) 1998-12-30
GB2328107A true GB2328107A (en) 1999-02-10
GB2328107B GB2328107B (en) 1999-07-21

Family

ID=26310559

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9824145A Expired - Fee Related GB2328107B (en) 1995-12-07 1996-12-05 Self-diagnostic methods for a facsimile
GB9823536A Expired - Lifetime GB2328106B (en) 1995-12-07 1996-12-05 Self-diagnostic methods for a facsimile

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9823536A Expired - Lifetime GB2328106B (en) 1995-12-07 1996-12-05 Self-diagnostic methods for a facsimile

Country Status (1)

Country Link
GB (2) GB2328107B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5550614A (en) * 1995-06-05 1996-08-27 Ricoh Company, Ltd. Method and system for detecting and distinguishing between blank pages within a reproduction job

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5550614A (en) * 1995-06-05 1996-08-27 Ricoh Company, Ltd. Method and system for detecting and distinguishing between blank pages within a reproduction job

Also Published As

Publication number Publication date
GB2328106B (en) 1999-07-21
GB2328106A (en) 1999-02-10
GB2328107B (en) 1999-07-21
GB9824145D0 (en) 1998-12-30
GB9823536D0 (en) 1998-12-23

Similar Documents

Publication Publication Date Title
USRE36211E (en) Communication managing data processing device in facsimile machine
GB2308037A (en) Self-diagnostic methods for a facsimile
EP0656721B1 (en) Facsimile apparatus
US20090051948A1 (en) Image-forming apparatus and method for controlling the same
US5889595A (en) Method of stopping a printing operation upon reception of abnormal image data in a facsimile
US6268937B1 (en) Facsimile system capable of document transmission with shortened transmission time
US5243437A (en) Fax machine having automated maintenance features
GB2328107A (en) Self-diagnostic methods for a facsimile
US7424627B2 (en) Storage device protection system, method for protecting hard disk thereof, medium for providing control program, and control program
US5677770A (en) Image forming apparatus for printing additional data such as image forming condition data along with the image
JP2867927B2 (en) Recording device
JP3603801B2 (en) Image processing device
JP2792985B2 (en) Facsimile machine
JP3167712B2 (en) I / O device
JP2000261642A (en) Information communication unit
JP3067400B2 (en) Communication management information processing device for facsimile machine
EP0854629A2 (en) Method of recording receiving information in a facsimile
KR100200964B1 (en) Printing method for economizing paper
JP3984667B2 (en) Facsimile device
JP3678328B2 (en) Facsimile device
JPH11215330A (en) Original reader
JPH05130345A (en) Facsimile equipment
JPH0583498A (en) Facsimile equipment
JPH05333641A (en) Copying device
JPH05193173A (en) Image recording apparatus

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081205