Printer apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTadashi Shiina, Tetsuo Suzuki, Tetsuzo Mori, Kunitaka Ozawa, Katsunori Hatanaka, Masakazu Ozawa
Life of this patent
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Abstract
A recording apparatus having a memory for storing recording data, and an address counter for controlling addresses in the memory in the direction of the columns or rows. The address counter controls a read start address for starting a process of reading the memory, thereby compensating for deviations in the longitudinal or widthwise direction of recording paper.
Claims22
A color recording apparatus comprising:
- a plurality of recording heads, including first to fourth recording heads, for recording a color image on a sheet, said color image having a plurality of color components, wherein each said recording head records at a different record position;
- a plurality of memory means for storing image data corresponding to respective said color components, said plural memory means being prepared for respective said plural recording heads;
- input means for inputting a control data according to an amount of displacement in an arrangement direction regarding each of said recording heads, said input means serving to input the control data independently for each of the plural recording heads;
- address signal generating means for generating an address signal for read-out of said image data, for each of said plural memory means, said address signal generating means comprising control means for controlling a read-out address of image data of corresponding said memory means based on the control data inputted from said input means;
- and
- drive/control means for driving/controlling said plural recording heads, in accordance with image data read out from each of said plural memory means based on the address signal for each of said plural memory means generated from said address signal generating means.
A color recording apparatus comprising:
- a plurality of recording heads, including first to fourth recording heads, for recording on a sheet a color image having a plurality of color components, each said recording head having a recording element disposed in a predetermined direction, said plural recording heads being arranged in a different direction from the predetermined direction;
- a plurality of memory means for storing image data corresponding to respective said color components, said plural memory means being prepared for respective said plural recording heads;
- input means for inputting a control data according to an amount of displacement in the predetermined direction regarding each of said recording heads, said input means serving to input the control data independently for each of the plural recording heads;
- address signal generating means for generating an address signal for read-out or writing of image data, for each of said plural memory means, said address signal generating means comprising control means for controlling a read-out address or writing address of image data of corresponding said memory means based on the control data inputted from said input means;
- and
- drive/control means for driving/controlling said plural recording heads in accordance with image data read out from said plural memory means.
A control method for a printer provided with a plurality of recording heads, including first to fourth recording heads, each of said recording heads having a plurality of recording elements arranged in a predetermined direction, said recording heads being arranged in a direction different from the predetermined direction, said recording heads being driven according to image data while conveying a recording material in an arrangement direction of said recording heads, said method comprising the steps of:
- causing input means to allow input of a control data according to an amount of displacement in the predetermined direction between said recording heads, for all the recording heads, said input means serving to input the control data independently for each of all the recording heads;
- and
- controlling a read-out position/writing position of the image data from/into each of image data storing means provided correspondingly to respective ones of the plural recording heads, in accordance with the control data inputted from said input means,
- whereby the displacement in the predetermined direction regarding the plural recording heads is controlled.
A control method for a printer provided with a plurality of recording heads, including first to fourth recording heads, each of said recording heads having a plurality of recording elements arranged in a predetermined direction, said recording heads being arranged in a direction different from the predetermined direction, said recording heads being driven according to image data while conveying a recording material in an arrangement direction of said recording heads, said method comprising the steps of:
- causing input means to allow input of a control data according to an amount of displacement in the direction different from the predetermined direction between said recording heads, for all the recording heads, said input means serving to input the control data independently for each of all the recording heads;
- and
- controlling either a read-out position of the image data from each of image data storing means provided correspondingly to respective ones of all the recording heads or a writing start timing of the image data of said recording heads, in accordance with the control data inputted from said input means,
- whereby the displacement in the direction different from the predetermined direction regarding all the recording heads is adjusted.
Dependencies are inferred from the claim text.