Claims
- 1. An image forming apparatus, comprising:
- input means for inputting image data;
- image forming means for forming an image on a recording medium in accordance with the input image data;
- clock pulse input means for inputting first clock pulses from outside;
- clock pulse generating means for generating second clock pulses;
- clock pulse output means for outputting the second clock pulses to the outside; and
- status data output means for outputting to the outside status data of the image forming means;
- wherein said image forming apparatus outputs the status data to the outside in either a first or second mode, said first mode being one in which said apparatus outputs the status data in synchronism with the first clock pulses input form the outside, and said second mode being one in which said apparatus outputs the second clock pulses generated by said generating means to the outside and outputs the status data in synchronism with the second clock pulses.
- 2. An apparatus according to claim 1, further comprising input means for inputting command data from the outside, wherein said status data output means outputs the status data corresponding to the input command data in the first mode or the second mode.
- 3. An apparatus according to claim 2, wherein said apparatus is capable of selecting the first mode or the second mode on a basis of the command data from the outside.
- 4. An apparatus according to claim 1, wherein the first clock pulses and the second clock pulses are communicated via a common line.
- 5. An apparatus according to claim 2, wherein the command data and the status data are communicated via a common line.
- 6. An apparatus according to claim 1, wherein when an error occurs during image forming operation by said image forming means, said status data output means outputs to the outside information associated with the error as the status data.
- 7. An apparatus according to claim 6, wherein said information associated with the error includes a number of pages of image data to be re-sent.
Priority Claims (1)
Number |
Date |
Country |
Kind |
58-56828 |
Apr 1983 |
JPX |
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Parent Case Info
This application is a division of application Ser. No. 07/554,187 filed Jul. 20, 1990, which is a continuation of application Ser. No. 07/291,349 filed Dec, 29, 1988, which is a continuation of application Ser. No. 41,635 filed Apr. 23, 1987, which is a continuation of application Ser. No. 594,866 filed Mar. 29, 1984.
US Referenced Citations (1)
Number |
Name |
Date |
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4671294 |
Humpleman |
Sep 1987 |
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Divisions (1)
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Number |
Date |
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Parent |
554187 |
Jul 1990 |
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Continuations (3)
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Date |
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291349 |
Dec 1988 |
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Parent |
41635 |
Apr 1987 |
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Parent |
594866 |
Mar 1984 |
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