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US 2003/0112317 A1Published application
Image forming apparatus of a 4-series drum configuration
AssigneeToshiba Tec Kabushiki Kaisha
InventorNaoya Murakami
Life of this patent
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Abstract
According to this invention, in a 4-series tandem type full color copying machine, a system which can perform a successive high-speed delay process by receiving a delay amount control signal from an engine portion and controlling the delay amount and can easily correct differences between delay amounts caused by distances between photosensitive drums due to registration can be provided other than the conventional delay control system in a high-speed processing system in which first and second pages are successively input.
Claims19
An image forming apparatus comprising:
- a supply section which supplies image data items of different colors;
- an image forming section including a feeding section which feeds a recording medium, a plurality of image forming units which respectively have rotatable photosensitive drums arranged side by side on said feeding section and transfer respective image data items of different colors onto the recording medium fed by said feeding section, and an output section which outputs sync signals in a sub-scanning direction in synchronism with processes by said image forming units;
- and
- a delay section which delays image data items of respective colors from said supply section by feeding times of the recording medium corresponding to intervals between said image forming units based on the sync signals from said output section of said image forming section and outputs the image data items to said image forming section.
1 more element
An image forming apparatus comprising:
- a supply section which supplies image data items of yellow, magenta, cyan, black;
- an image forming section including a feeding section which feeds a recording medium, image forming units for yellow, magenta, cyan, black which respectively have rotatable photosensitive drums arranged side by side on said feeding section and transfer respective image data items of yellow, magenta, cyan, black in order onto the recording medium fed by said feeding section, and an output section which outputs sync signals for yellow, magenta, cyan, black in a sub-scanning direction in synchronism with processes by said image forming units;
- and
- a delay section which delays image data of magenta from said supply section by feeding time of the recording medium corresponding to an interval between said image forming units for yellow and magenta based on the sync signal for magenta from said output section of said image forming section and outputs the image data to said image forming section, which delays image data of cyan from said supply section by feeding time of the recording medium corresponding to an interval between said image forming units for magenta and cyan based on the sync signal for cyan from said output section of said image forming section and outputs the image data to said image forming section, and which delays image data of black from said supply section by feeding time of the recording medium corresponding to an interval between said image forming units for cyan and black based on the sync signal for black from said output section of said image forming section and outputs the image data to said image forming section.
1 more element
Dependencies are inferred from the claim text.