Internal test method for facsimile transceiver
AssigneeRicoh Company, Ltd.
InventorsMitsuru Kondo, Toshihiko Misawa
Life of this patent
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Abstract
The transmitting and receiving sections are both energized, and the output of the transmitting section is connected to the input of the receiving section. The intensity of the transmitting section light source is varied, as by opening and closing a switch, and if the output of the receiving section is accurate in response to the light source variation, the transmitting and receiving sections are judged to be operating normally.
Claims10
A method of testing a facsimile transceiver having a transmitter section with a light source to illuminate the copy and a receiver section, the method comprising the steps of:
- energizing both the transmitter section and the receiver section;
- connecting the output of the transmitter section to the input of the receiver section;
- and
- varying the intensity of the lights source;
- whereby
- the correlation between the pattern produced by the receiver section and the variation in intensity of the light source is an indication of the normality of operation of the transceiver.
In a facsimile transceiver having a transmitter section with a light source to illuminate the copy and a receiver section, the improvement of a system to test the transceiver, comprising:
- switch means operative to energize both the transmitter section and the receiver section and connect the output of the transmitter section to the input of the receiver section for testing;
- and
- means to vary the intensity of the light source;
- whereby
- the correlation between the pattern produced by the receiver section and the variation of intensity of the light source is an indication of the normality of operation of the transceiver.
Dependencies are inferred from the claim text.