SHARP DTE124 Technical Report

Date: Mar. 29, 1994

DUPLICATOR : SD-2060

No. : DTE-124

CHANGE IN THE ADF CONTROL ROM TO IMPROVE THE
ORIGINAL COPY SIZE DETECTION AND THE ORIGINAL
COPY STOPPING PRECI SIO N .

1.General: The ROM of the PBA control PWB has been changed to improve the RADF original

copy size detection and original copy stopping precision in model SD-2060.

2.Description: 1. Improvement of original copy size detection.
(1)The software has been changed so that when the original copy is of a size other

than the standard copy paper sizes an appropriate size of copy paper is
automatically selected by the paper size detection function during automatic paper
size selection mode operations.

Ex. ➀When a B4 size paper is double folded and set, the length of the paper is

detected as between B4 and B5, and assigned as “special”, and the copy paper
size selected when the original copy was set was used. With the change in
software described above, B4 is automatically selected.

Ex. ➁If an A4 size paper is aligned with the original copy guide width and B5R size

original copy is selected (Random feed during SDF mode operations), the paper
is detected as between A3 and A4, and assigned as “special”, and as in Ex. ➀
above, the copy paper size selected with the original copy was set was used.
With the change in software described above, A3 is automatically selected.

(Size detection change.)

Tray guide Length detection Original copy size

DWD3 ON

DWD4 ON

DWD5 ON

DLS1, 2 ON
DLS1 ON, DLS2 OFF
DLS1, 2 OFF

DLS1, 2 ON
DLS1 ON, DLS2 OFF
DLS1, 2 OFF

DLS1, 2 ON
DLS1 ON, DLS2 OFF
DLS1, 2 OFF

B4
Special ⇒ B4
B5

WLT
Special ⇒ WLT
LT

A3
Special ⇒ A3
A4

(2)Prevention of original copy size detection errors during operations other than design

specifications.

SHARP CORPORATION Reprography Division

1/4

Green

C

Prevention of detection errors during when setting standard sized original copies

other than design specifications and during automatic paper size selection mode
operations has been carried out. Detection errors which occur when setting the
original copies however, occur in spite of specifications.

[Old]

The original copy sizes detected and selected operation sizes when setting standard
sized original copies are shown in the tables below. Those size selections which are
shaded are the sizes selected when sizes other than the standard sizes are detected.

Original

Copy

A5 INV INV A5 A5 A5 A5 A5 A5
B5R B5R LTR B5R A4R B5R A4R B5R B5R
A4R LTR LTR A4R A4R A4R A4R A4R A4R
B5 B5 B5 B5 B5 B5 B5 B5 B5
B4 B4 B4 B4 B4 B4 B4 B4 B4
A4 A4 A4 A4 A4 A4 A4 A4 A4
A3 A3 A3 A3 A3 A3 A3 A3 A3

INV INV INV A5 A5 A5 A5 A5 A5
LTR LTR LTR A4R
LG LG LG LG LG F4 B4 LG LG

LT LT LT LT LT LT LT LT LT
WLT WLT WLT WLT WLT WLT WLT WLT WLT
F4 LG

Inch series SEEG, SUK SCA Domestic

Set Operation Set Operation Set Operation Set Operation

LG

LG

A4R

LG

A4R

F4 F4 LG

A4R

A4R

When the detected original copy sizes deviate from the table shown above, the
selections shown in the table below are applied.

A4R

LG

2/4

Inch series

SEEG, SUK

SCA

When setting the original copy.
Operation detection.
When setting the original copy. INV A5, LTR A4R, F4 LG
Operation detection. B5R A4R
When setting the original copy. INV A5, LTR A4R, LG F4
Operation detection.

A5 INV, A4R LTR, F4 LG
B5R LTR

B5R A4R, F4 B4

When setting the original copy. INV A5, LTR A4R, F4 LG

Domestic

Operation detection.

The selections shown in the table above operate for all sizes of set original copies other
than design specifications. However, When detection errors occur during operation size
detection, copy operations are stopped. (during automatic paper selection mode
operations).