Image forming apparatus with control based on detected and designated recording medium size
AssigneeCanon Kabushiki Kaisha
InventorsTomoko Nanbu, Yoji Serizawa, Hidenobu Suzuki
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Abstract
An image forming apparatus includes a detecting unit that detects the size of a recording medium and a designating unit that designates the size of a recording medium onto which an image is to be recorded. The comparing unit compares the detected size with the designated size to determine which size is larger and a control unit controls the apparatus to perform operations such that an operation when the detected size is larger than the designated size is different from that when the detected size is smaller than the designated size.
Claims30
An image forming apparatus comprising:
- means for recording an image onto a recording medium;
- means for conveying a recording medium to said recording means;
- means for detecting a size of the recording medium;
- means for designating a size of a recording medium onto which an image is to be recorded;
- means for comparing the detected size with the designated size to determine which size is larger;
- and
- controlling means for controlling said apparatus to perform a plurality of operations such that an operation performed when the detected size is larger than the designated size is different from an operation performed when the detected size is smaller than the designated size, wherein said detecting means detects the size of the recording medium during the conveyance by said conveying means.
An image forming apparatus comprising:
- means for recording an image onto a recording medium;
- means for conveying the recording medium to said recording means;
- means for detecting a size of the recording medium during the conveyance by said conveying means;
- means for designating a size of a recording medium onto which an image is to be recorded;
- and
- means for controlling an image forming operation,
- wherein said detecting means comprises means for measuring a length of the recording medium in a conveyance direction during the conveyance by said conveying means, and
- wherein said controlling means has a first mode for controlling the image forming operation on the basis of the detected size and a second mode for controlling the image forming operation on the basis of the designated size.
An image forming apparatus comprising:
- paper feed means for feeding a recording medium;
- detecting means for detecting a trailing end of the recording medium;
- a plurality of counting means each for counting a conveyance time for the recording medium fed by said paper feed means;
- and
- controlling means for controlling a paper feed timing for the subsequent recording medium fed by said paper feed means on the basis of the count results of said counting means when said paper feed means feeds a plurality of the recording mediums successively,
- wherein said paper feed means is capable of feeding a plurality of the recording mediums sequentially, and each of said plurality of counting means counts a conveyance time until said detecting means detects each trailing end of the plurality of the recording mediums fed sequentially respectively.
Dependencies are inferred from the claim text.