Panasonic DP-3000 Technical Manual page 9
Digital copier
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Also See for DP-3000:
- Operating instructions manual (199 pages) ,
- User manual (105 pages) ,
- Service manual (9 pages)
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1. Ducument Adaptor for New Copier Engine (Gate Array)
DZAC000234 (DANCE) is a Ducument Adaptor for New Copier Engine (Gate Array) and provides the
Image Control peripheral function and Recording Data Control.
• DMA Control
It is used to transfer data between the following devices.
Scanning Control LSI (MN86076) →
Page Memory (S-DRAM)
Sort Memory Control Gate Array
(BRIDGE)
Page Memory (S-DRAM)
System Memory (DRAM)
• Rotation Management
The rotation is carried out by the hardware when transferring the route.
Page Memory (S-DRAM)
Page Memory (S-DRAM)
• S-DRAM Control
It generates S-DRAM Control Signal for Page memory and Refresh Control when the power is ON. It
does not backup the Page Memory.
• PDL Data Transfer
When installing the PDL Option, the actual coded data is retrieved on the PDL side first and is
transferred to Page Memory (S-DRAM). Then, the coded data is transferred to the PDL Option on the
System side.
• Picture Quality Correction Circuit (Smoothing)
When the receiving data (8 dot/mm x 3.85, 7.7, 15.4 line/mm) is converted to 16 dot/mm x 15.4 line/
mm resolution, the current printed data and 15 surrounding printed data are sent to the Smoothing
ROM through 16 bit line and the ROM sends smoothed dot data. As a result of this operation, the
distorted curved lines are smoothed.
• Binary Gray Scale Conversion
The signal of a binary-level image such as copying is converted into a multiple-value (256-scale)
image signal. The signal is transferred to an external PWM control LSI for multiple-value recording.
A maximum of 7-by-7 pixels around an area is referred to in layers for conversion into multiple-value
signal.
• Gray-Level Enhancement
This control function allows expressing higher-level scales than using a recorded signal, by reducing
line density into 1/2 or 1/3 on the original after binary-to-multiple value conversion. This capability
increases reproduction of grayscale images such as photographs.
• Laser Pulse Width Control
After smoothing, the IPC controls Laser pulse width by the software setting of the print quality.
• Image Range Isolation Circuit
It identifies the halftone picture range and controls smoothing, Binary Gray Scale Conversion, and
Laser pulse width control to eliminate blotching of the recording picture which has undergone error
diffusion or other process.
• Reduction / Enlargement Control Circuit
This circuit is used to process the received data so that it fits on the recording paper, according to the
Fax Parameter Settings.
Page Memory (S-DRAM)
→
Sort Memory Control Gate Array
(BRIDGE)
→
Page Memory (S-DRAM)
→
PMW Control LSI (LP)
→
Page Memory
→
CODEC for Image (PM-22c) :
→
PMW Control LSI (LP)
9
:
Scanning Route
:
Coding Route
:
Decoding Route
:
Recording Route
:
Report Route
Rotation (Send)
:
Copy, Rotation (Receive)
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