Band-based printing control system
AssigneeCanon Kabushiki Kaisha
InventorHiroharu Takahashi
Life of this patent
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Abstract
In an output method and output apparatus, one page of text data is divided into portions corresponding to bands of the print image of the page. Each portion of data is serially developed as a high-density image (600 dpi) on a bit map memory, and then is serially printed. One page of graphic data is, as a whole, developed as a low-density image (300 dpi) on the bit map memory. The low-density image is smoothed before output.
Claims33
A printer controller for controlling a printing operation of a printer based on output information of one page inputted from an external apparatus, comprising:
- input means for inputting the output information of one page from the external apparatus;
- and
- control means for controlling the printing operation based on the output information inputted by said input means, said control means controlling the print operation so as to print in synchronism with whether generation of image data proceeds in band units or whether generation of image data proceeds in page units.
A method for controlling a printing operation of a printer based on output information of one page inputted from an external apparatus, comprising the steps of:
- inputting the output information of one page from the external apparatus;
- and
- controlling the printing operation based on the output information inputted in said input step, said controlling step controlling the print operation so as to print in synchronism with whether generation of image data proceeds in band units or whether generation of image data proceeds in page units.
A memory medium for storing computer executable process steps to control a printing operation of a printer based on output information of one page inputted from an external apparatus, said process step comprising:
- a step to input the output information of one page from the external apparatus;
- and
- a step to control the printing operation based on the output information inputted in said input step, wherein the print operation is controlled so as to print in synchronism with whether generation of image data proceeds in band units or whether generation of image data proceeds in page units.
A printer control apparatus for generating and outputting image data, said apparatus comprising:
- input means for inputting control data from an external device;
- generating means for generating image data in response to the control data and for storing the generated image data in a storage device from which the image data can be read for printing;
- and
- control means for controlling switching of said generating means on the basis of the control data between a first mode in which the image data of a page is generated in bands and stored in said storage device and a second mode in which the image data of one page is stored as a page in said storage device.
A method of controlling a printer to generate and output image data, said method comprising the steps of:
- receiving control data from an external device;
- generating image data using a generating means, in response to the control data;
- storing the generated image data in a storage device from which the image data can be read for printing;
- and
- controlling switching of said generating means on the basis of the control data between a first mode in which the image data of a page is generated in bands and stored in said storage device and a second mode in which the image data of one page is stored as a page in said storage device.
Dependencies are inferred from the claim text.