Video printer having a frame memory configured to effectively ut

Details Video printer having a frame memory configured to effectively ut Video printer having a frame memory configured to effectively ut

1993-06-29

1996-01-30

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347254, H04N 121

Patent

active

054884055

ABSTRACT:
The invention has for its object to provide a video printer which enables multi-prints of improved image quality to be obtained, and which is built up of a frame memory 18 having a capacity of 1,024 pixels (H).times.512 pixels (V), a thermal head 28 of 1,024 elements, and a control unit 40 designed to repeat a printing process by the number of print lines, wherein, upon multi-printing indicated, the first four images A.sub.1, B.sub.1, C.sub.1 and D.sub.1 are reduced to 1/2 in size for writing in a frame memory 18, then the image data in Y from 0 to 511 are written at X=0 in the 0 to 511 addresses on a line memory 22, then the image data in Y from 0 to 511 are written at X=512 in the 512 to 1,023 addresses on the line memory 22, and finally the thus written 1,024 image data are transferred every print line to the thermal head 28 via a gradation control unit 24, whereby the four images are printed on a recording paper. By repeating the above process four times, 16 images are printed on the single recording paper.

REFERENCES:
patent: 4872064 (1989-10-01), Tutt et al.
patent: 4965662 (1990-10-01), Shiota
patent: 5317417 (1994-05-01), Yamamura

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