Iii . Digital Image Processing; Outline - Canon ImageRunner 600 Service Manual

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CHAPTER 4 IMAGE PROCESSING SYSTEM

III . DIGITAL IMAGE PROCESSING

Digital image processing takes place on the following PCBs:

IP (image processor)

MFC (multi-function controller)

System motherboard

Memory board (DRAM)

Image server

[1] Digital Image Processing (for scanner input)

• Shading correction

• Enlargement/reduction (main scanning direction)

• Edge emphasis

• Binary processing

• AE processing (density correction curve)

• Negative/positive reversal

• Frame erasing

[2] Compression/decompression

[3] Data transfer control

[1] Digital Image Processing (for PDL input)

• Enlargement/reduction (main/sub scanning direction)

[2] Data transfer control

Relays image signals.

Converts PDL data into a format that can be

processed by the copier.

Page Memory: 18 MB

(equivalent of 4 A4 originals; not compressed)

Stores image data that has been read in sequence.

2 GB (1,920 A4 originals; compressed)

Table 4-301 Related PCBs

CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.

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