Savin LD330 Spécifications télécharger pdf (Page 81)

Print Controller Design Guide for Information Security:

Page 81 of 92

Data Flow

Marking:

• The data flow for when the Copy Data Security feature is selected at the time a print job is

performed is virtually the same as that of regular print jobs (see Printer). The printer

language-encoded data sent from the host computer is interpreted by the language processing

subsystem, after which it is converted into image data. It is then combined with the background

pattern selected by the user and stored temporarily in the Page Memory in binary bitmap format.

Detection/Graying:

• The optional Copy Data Security Unit, which is necessary in order to detect the embedded pattern

on the paper, functions as part of the image processing performed during the scanning phase, i.e.

before the image data is temporarily saved to memory. As the scanning engine scans the image,

the Copy Data Security Unit examines the scanned data for the presence of an embedded pattern.

Once the unit detects the presence of the pattern, demarcating the data as a confidential document,

the buzzer is sounded and the scanned data is grayed out from that point onward. Following this,

an entry for the event itself is stored in the Access Log, along with the username.

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Special pattern

embedded when

image is printed out

When pattern is detected,

buzzer sounds and image

data is grayed out (before

data is stored).

Strong deterrent

Previous deterrent

feature still used

・

MFP with Copy Data

Security setting disabled,

・ MFP without Copy

Data Security Unit, or

・ Non-Ricoh product

MFP with optional

Copy Data Security

Unit installed and

enabled

MFP

Pattern cannot be detected, however

pre-selected marking (e.g. date)

becomes noticeably visible

Contract

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Contract

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Jan. 1 ‘05

Buzzer

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Savin LD330 Spécifications Page 81

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