Sheet feeding control for an image forming apparatus
AssigneeSanyo Electric Co., Ltd.
InventorToshiyuki Mikida
Life of this patent
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Abstract
An image forming apparatus for forming an image on a sheet supplied thereto, wherein a time period required for a first sheet passing a predetermined position in a sheet conveying path is measured, and the measured time period is compared with a previously set time period. The sheet supply operation is controlled so that, when the measured time period is shorter than the set time period, operations of supplying second and subsequent sheets are started with a time interval equal to the difference between the time periods, and, when the measured time period is equal to or longer than the set time period, operations of supplying second and subsequent sheets are started immediately.
Claims9
An image forming apparatus in which sheets of unspecified size are conveyed along a sheet conveying path and an image is formed thereon, comprising:
- means for conveying sheets along said sheet conveying path;
- means for measuring a time period required for a first sheet passing a predetermined position in said sheet conveying path to determine its size;
- means for subtracting a measured time period obtained by said measuring means from a set time period to obtain a subtraction value;
- and
- means for controlling said conveyance means in such a manner that, when said subtraction value is positive, operations of conveying second and subsequent sheets are started with a time interval equal to said subtraction value, and, when said subtraction value is negative or zero, operations of conveying second and subsequent sheets are started immediately.
An image forming apparatus in which sheets of unspecified size supplied from sheet supply means are conveyed along a sheet conveying path and an image is formed thereon, comprising:
- means for supplying sheets to said sheet conveying path;
- means for conveying supplied sheets along said sheet conveying path;
- means for measuring a time period required for a first sheet passing a predetermined position in said sheet conveying path to determine its size;
- means for comparing a measured time period obtained by said measuring means with a set time period;
- and
- means for controlling said sheet supply means in such a manner that, when said measured time period is shorter than said set time period, operations of supplying second and subsequent sheets are started with a time interval equal to the difference between said time periods, and when said measured time period is equal to or longer than said set time period, operations of supplying second and subsequent sheets are started immediately.
Dependencies are inferred from the claim text.