Image forming apparatus having simple drive timing control
AssigneeRicoh Company, Ltd.
InventorsShinji Kobayashi, Tadashi Shinohara
Life of this patent
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Abstract
A color image forming apparatus for forming a color image on a storage medium using a laser beam generated from a laser generating means includes a plurality of image data interfaces provided between the color image forming apparatus and a peripheral device, image data interface conversion means for converting each of the image data interfaces into an image data interface for the laser generating means, and a single control means for controlling a drive timing of the laser generating means, the control means controlling the drive timing of the laser generating means for each one of a plurality of colors based on image data input from the image interface conversion means.
Claims24
An image forming apparatus for forming an image on a transfer paper using a laser beam generated from a laser generating means, the color image forming apparatus comprising:
- an adjustment component that adjusts a sub-scanning regist up to the timing of an operation commencement signal from a regist sensor and an electrostatic latent image formation operation commencement, such that a succeeding operation commencement signal becomes active during electrostatic latent image formation;
- a scanning synchronization signal generating component;
- an image effective interval signal generating component;
- and
- a line data synchronization signal generating component that generates a line data synchronization signal synchronized to image data of each line at least during an interval in which the image effective interval signal is active,
- the image forming apparatus using the scanning synchronization signal, the image effective interval signal and the line data synchronization signal to transfer data.
An image forming apparatus for forming an image on a transfer paper using a laser beam generated from a laser generating means, the image forming apparatus comprising:
- an image forming component that includes means for periodically line scanning in a scanning direction a photosensitive body movable in a sub-scanning direction with a laser beam carrying image data and exposing a photosensitive surface using the laser beam;
- an application board that produces image data and transfers the image data so produced to the image forming component;
- trigger signal generating means for generating a scanning line trigger signal and a sub-scanning effective region trigger signal for transferring at a predetermined timing the image data from the application board to the image forming component based on a laser beam scan synchronization signal;
- communication means for communicating the scanning line trigger signal and the sub-scanning effective region trigger signal to the application board;
- and
- transferring means for generating a scanning line synchronization signal based on the communicated scanning line trigger signal and generating a sub-scanning effective region signal based on the sub-scanning effective region trigger signal, and transferring image data to the image forming component in synchrony with the scanning line synchronization signal and the sub-scanning effective region signal.
An image forming apparatus for forming an image on a transfer paper using a laser beam generated from a laser generating component, the color image forming apparatus comprising:
- an adjustment component that adjusts a sub-scanning regist up to the timing of an operation commencement signal from a regist sensor and an electrostatic latent image formation operation commencement, such that a succeeding operation commencement signal becomes active during electrostatic latent image formation;
- a scanning synchronization signal generating component that generates a scanning synchronization signal;
- an image effective interval signal generating component that generates an image effective interval signal;
- and
- a line data synchronization signal generating component that generates a line data synchronization signal synchronized to image data of each line at least during an interval in which the image effective interval signal is active;
- the image forming apparatus using the scanning synchronization signal, the image effective interval signal and the line data synchronization signal to transfer data.
An image forming apparatus for forming an image on a transfer paper using a laser beam generated from a laser generating component, the image forming apparatus comprising:
- an image-forming component that includes a component that periodically scans in a scanning direction a photosensitive body movable in a sub-scanning direction with a laser beam carrying image data and exposing a photosensitive surface using the laser beam;
- an application board that produces image data and transfers the image data so produced to the image forming component;
- a trigger signal generating component that generates a scanning line trigger signal and a sub-scanning effective region trigger signal for transferring at a predetermined timing the image data from the application board to the image forming component based on a laser beam scan synchronization signal;
- a communication component for communicating the scanning line trigger signal and the sub-scanning effective region trigger signal to the application board;
- and
- a transfer component that generates a scanning line synchronization signal based on the communicated scanning line trigger signal and generates a sub-scanning effective region signal based on the sub-scanning effective region trigger signal, and transfers image data to the image forming component in synchrony with the scanning line synchronization signal and the sub-scanning effective region signal.
Dependencies are inferred from the claim text.