Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1991-05-10
1993-03-02
Fuller, Benjamin R.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358404, 358444, 395115, H04N 121
Patent
active
051914301
ABSTRACT:
In a printing apparatus, a raster buffer for storing dot image data is divided into three layers in the direction of auxiliary scanning, and the respective layers are assigned to a writing layer in which a font pattern read from a font memory is written, a reading layer from which dot image data that have been written are read, and a write-waiting layer in which a font pattern that has overflown the writing layer is written, with the writing layer and the write-waiting layer having a capacity for storing a character having the biggest size among those which are used frequently. Prior to printing of dot image data, a font pattern is written in the writing layer, and the definition of the layer in which writing has been made is changed to a reading layer, dot image data is then read from the reading layer, the definition of the write-waiting layer waiting for the next writing is changed to a writing layer, and the definition of the reading layer from which the reading has been made is changed to a write-waiting layer, with such change of definition being made successively.
REFERENCES:
patent: 4805094 (1989-02-01), Oye et al.
patent: 5046039 (1991-09-01), Ugajin et al.
Sudoh Eisho
Suzuki Masahiro
Fuller Benjamin R.
OKI Electric Industry Co., Ltd.
Rogers Scott A.
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