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AssigneeCanon Kabushiki Kaisha
InventorsJiro Moriyama, Hidehiko Kanda
Estimating the term…
A printing apparatus receives, from a host apparatus, main scanning/printing direction information representing the main scanning/printing direction of a printhead. The printing apparatus stores, in a print buffer, print data corresponding to the printing direction represented by the main scanning/printing direction information generated by the host apparatus. The CPU of the printing apparatus controls printing by the printhead on the basis of the main scanning/printing direction information and the print data stored in the print buffer.
A printing apparatus which performs printing by driving a printhead on the basis of print data transmitted from a host apparatus, comprising:
An information processing apparatus which transmits print data to a printing apparatus that has a buffer for storing print data and performs printing by scanning a printhead in a main scanning direction with respect to a printing medium on the basis of the print data stored in the buffer, comprising:
A method of controlling a printing apparatus which has a buffer for storing print data and performs printing by scanning a printhead in a main scanning direction with respect to a printing medium on the basis of print data from a host apparatus that is stored in the buffer, comprising:
A method of controlling an information processing apparatus which transmits print data to a printing apparatus that has a buffer for storing print data and performs printing by scanning a printhead in a main scanning direction with respect to a printing medium on the basis of the print data stored in the buffer, comprising:
A program of causing a computer to control a printing apparatus which has a buffer for storing print data and performs printing by scanning a printhead in a main scanning direction with respect to a printing medium on the basis of print data from a host apparatus that is stored in the buffer, comprising:
A program of causing a computer to control an information processing apparatus which transmits print data to a printing apparatus that has a buffer for storing print data and performs printing by scanning a printhead in a main scanning direction with respect to a printing medium on the basis of the print data stored in the buffer, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Using printers: by matrix printers
Receiving print data characterized by its formatting, e.g. particular page description languages: including print-ready data, i.e. data already…
Input data handling means: buffers
Accepting output data; Preparing data for the controlling system: characterised by a particular command or data flow, e.g. Page Description…
Term end not estimated
The present invention relates to a printing apparatus and printing method and, particularly, to a technique of implementing a low-cost, high-speed, high-quality printing apparatus. More particularly, the present invention relates to an inkjet printing apparatus and control method therefor which maintain a high speed or high image quality while reducing the RAM capacity or ROM capacity in the printing apparatus or the number of gates of an ASIC to implement a low-cost printing apparatus. The present invention also relates to an inkjet printing apparatus and control method therefor which perform printing proper for the relationship between the host apparatus of a system and the printing apparatus.
Inkjet printing apparatuses have widely been used in printing apparatuses, copying machines, and the like because low noise, low apparatus cost, low running cost, compact apparatus, and the like can be facilitated.
A conventional serial inkjet printing apparatus prints one page by repeating main scanning of scanning a printhead in the main scanning direction and sub-scanning of conveying a printing medium in the sub-scanning direction. The serial inkjet printing apparatus ensures a memory (print buffer) having a capacity enough to store print data of at least one scanning. After all print data of one scanning is stored in the print buffer, main scanning of the printhead starts. Especially with the development of color printing apparatuses and an increase in resolution in response to demands for higher image qualities, the capacity necessary for the print buffer increases. The printing apparatus requires an expensive larger-capacity memory, resulting in a high apparatus cost.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a perspective view showing the schematic arrangement of an inkjet printing apparatus to which the present invention can be applied;
FIG. 2 is a view showing the orifice layout of a printhead according to the first embodiment;
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
(First Embodiment)
FIG. 1 is a perspective view showing the schematic arrangement of an inkjet printing apparatus to which the present invention can be applied.