Claims
- 1. An image forming apparatus comprising:
- a movable image carrier; and
- a plurality of developing devices for developing a latent image formed on said movable image carrier,
- wherein a developing image on said movable image carrier is formed on a single recording medium,
- wherein said plurality of developing devices are arranged in a direction of movement of said movable image carrier, and are operated in sequence from the downstream to the upstream side in the direction of movement of said movable image carrier, and
- wherein when an image is formed on the single recording medium, the development of the developing device on the downstream side is started after the development of a developing device on the upstream side in the direction of movement of said movable image carrier is ended.
- 2. An apparatus according to claim 1, wherein a color of the developing device on the most downstream side is black.
- 3. An apparatus according to claim 1, wherein said plurality of developing devices are operated repeatedly.
- 4. An apparatus according to claim 1, further comprising a movable recording medium carrier, opposing said image carrier, for carrying a recording medium,
- wherein when said recording medium carrier carries a recording medium, a length of a portion in a direction of movement of said recording medium carrier in which no recording medium is present is larger than distances between adjacent developing devices of said plurality of developing devices.
- 5. An apparatus according to claim 4, wherein the length of the portion in the direction of movement of said recording medium carrier in which no recording medium is present is equal to a distance from a trailing end to a leading end of the recording medium.
- 6. An apparatus according to claim 4, wherein when said recording medium carrier carries a plurality of recording mediums, lengths of a plurality of portions in the direction of movement of said recording medium carrier in which no recording mediums are present are equal.
- 7. An image forming apparatus comprising:
- a movable image carrier; and
- a plurality of developing devices for developing a latent image formed on said movable image carrier;
- wherein a developing image on said movable image carrier is formed on a single recording medium,
- wherein said plurality of developing devices comprise cyan, magenta, yellow, and black developing devices arranged in an order of cyan, magenta, yellow, and black from an upstream side in a moving direction of said movable image carrier, and when the image is formed on the single recording medium, said developing devices are operated in an order of cyan, magenta, yellow and black.
- 8. An image forming apparatus comprising:
- a movable image carrier; and
- a plurality of developing devices for developing a latent image formed on said movable image carrier;
- wherein a developing image on said movable image carrier is formed on a single recording medium,
- wherein said plurality of developing devices comprises yellow, cyan, magenta, and black developing devices arranged in an order of yellow, cyan, magenta and black from an upstream side in a moving direction of said movable image carrier, and when the image is formed on the single recording medium, said developing devices are operated in an order of magenta, cyan, yellow and black.
- 9. An image forming apparatus comprising:
- a movable image carrier; and
- a plurality of developing devices for developing a latent image formed on said movable image carrier;
- wherein a developing image on said movable image carrier is formed on a single recording medium,
- wherein said plurality of developing devices are not less than three and arranged in a direction of movement of said movable image carrier,
- wherein said plurality of developing devices are to be operated in sequence, and
- wherein when the image is formed on the single recording medium, the development of a developing device on the most downstream side in the direction of movement of said image carrier is started after the development of a developing device on the most upstream side is ended.
- 10. An apparatus according to claim 9, further comprising a movable recording medium carrier opposing said image carrier, for carrying a recording medium, so that when said recording medium carrier carries a recording medium, a length of a portion in a direction of movement of said recording medium carrier in which no recording medium is present is smaller than a distance between said developing device on the most upstream side and said developing device on the most downstream side of said plurality of developing devices.
- 11. An apparatus according to claim 9, wherein a color of the developing device on the most downstream side is black.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-042260 |
Feb 1993 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/190,474 filed Feb. 2, 1994, now abandoned.
US Referenced Citations (17)
Continuations (1)
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Number |
Date |
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Parent |
190474 |
Feb 1994 |
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