Toshiba f99e609 Service Note

BSI(Service Note) TOSHIBA

Digital copier

No.15-1 = No.12-2

No.15-1 < No.12-2

No.15-1 = No.12-2

TOSHIBA TEC CORPORATION

2-4-1, Shibakoen, Minato-ku, TOKYO, 105-8524 JAPAN

BSI No

F99E609

SUBJECT

Exposure Level Adjustment for No. 15-1 Chart

MODEL

CATEGORY

Treatment in the field

CONTENT

The field adjustment chart (No.15-1) for digital copiers is designed to have the same checking and judgment procedure as the field adjustment chart (No. 12-2) for the current analog. However, the image density reproductivity level of gray scale "S" patch for No. 15-1 is lighter than that of No.12-2 due to the image processing process specific to the digital copiers.

General

FIELD APPLICATION

To be applied when necessary

FACTORY APPLICATION

UNIT

Other

Date

99/05/13

riginal

Image process

Original

Adjust the exposure level by looking at the copy of the gray scale. At the optimum exposure level, S2 can be seen slightly and S1 should not be observed.

< The correction of judgment level>

Adjust the exposure level by looking at the copy of the gray scale. At the optimum exposure level, S3 can be seen slightly at S2 density reproductivity level by No.12-2 in the analog copiers' case and an even image reproduction for the grid pattern which is placed on the chart. This setting level is applied for the Text/Photo mode, the Text mode, and also the Photo mode.

CAUTION

In addition, in case of using No.15-1 for analog copiers, the optimum exposure level setting is the same as the current judgment level in which S2 can been slightly and S1 should not been observed.

Analog copier

Analog exposure

Copy output

BSI No. F99E609 Page 2

Grid pattern

Gray Scale Patch S3