Image forming apparatus for forming an image in synchronization with a vertical synchronizing signal
AssigneeSharp Kabushiki Kaisha
InventorsKaoru Higuchi, Hiroshi Ishii, Masaya Nagata
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Abstract
In response to a vertical synchronizing signal generated from a vertical synchronizing signal generator, a microcomputer forms a predetermined image on a print sheet using a printer head on the basis of image data applied from an image memory. The microcomputer controls the rotation of a motor so that the move position of the print sheet is set to a predetermined position with a vertical synchronizing signal as the reference after an edge of the print sheet is detected by a sheet sensor.
Claims26
An image forming apparatus responsive to a vertical synchronizing signal to move a print sheet for forming a predetermined image, comprising:
- convey means for moving said print sheet;
- image forming means for forming said predetermined image on said print sheet while said print sheet is moved by said convey means;
- detection means for detecting an edge of said print sheet;
- and
- control means for controlling said convey means so that a move position of said print sheet from which said print sheet is to be moved by said convey means during image forming is set to a predetermined position with said vertical synchronizing signal as a reference after an edge of said print sheet is detected by said detection means in moving said print sheet by said convey means.
A method for conveying a print sheet on which a predetermined image is to be formed comprising the steps of:
- detecting an edge of the print sheet;
- and
- controlling a conveyor for moving the print sheet so that a move position of the print sheet from which the print sheet is to be moved by said conveyor during the formation of the predetermined image on the print sheet including setting the move position to a predetermined position with reference to a vertical synchronizing signal after said edge has been detected.
Dependencies are inferred from the claim text.