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US 5,737,501 AGranted
Printer control unit and method
AssigneeCanon Kabushiki Kaisha
InventorKiyohiro Tsunekawa
Life of this patent
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AssigneeCanon Kabushiki Kaisha
InventorKiyohiro Tsunekawa
Estimating the term…
When there occurs a need to perform resolution conversion while a drawing object, such as a character, is formed, deterioration of print quality is reduced by selecting a reforming method according to the type of font. The quality of other pages is prevented from deteriorating in a case in which a drawing object is referenced at the same time from different pages by forming another drawing object. Prevention of deterioration of quality is achieved by selecting a method of forming (for example, by rescaling when the font is scalable) a pattern having a different resolution according to the type of font in a case in which a drawing object is formed on the basis of print data. Further, prevention of deterioration of quality is achieved where a drawing object is shared among a plurality of pages by forming another drawing object when a decreased resolution is desired.
A printer control unit, comprising:
A printer control unit for drawing an image by retrieving a previously formed font object corresponding to previously input print data when a same character type and the same character code as those of the previously formed font object are requested in current print data and by referring to said previously formed font object when said previously formed font object is present, said printer control unit comprising:
A printer control method, comprising:
A printer control method for retrieving a previously formed font object corresponding to print data input earlier and for drawing an image by referring to said previously formed font object when said font object is present in a case in which a same character type and same character code as those of the previously formed font object are requested in current print data, said printer control method comprising:
A memory which is accessed by a computer, said memory having stored therein the following programs:
A memory which is accessed by a computer, said memory having stored therein a printer control program for retrieving a previously formed font object corresponding to previously input print data and for drawing an image by referring to said previously formed font object when said previously formed font object is present in a case in which a same character type and same character code as those of the previously formed font object are requested in current print data, said printer control program including:
A method for re-writing font objects at a reduced resolution, said method comprising:
A method for re-writing font objects at a reduced resolution, said method comprising:
A method for managing a cache of font objects in accordance with input print data, said method comprising:
An apparatus for re-writing font objects at a reduced resolution, said apparatus comprising:
An apparatus for re-writing font objects at a reduced resolution, said apparatus comprising:
An apparatus for managing a cache of font objects in accordance with input print data, said apparatus comprising:
Dependencies are inferred from the claim text.