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44 05 Grid voltage correction operation test

Used to perform the grid voltage correction and to display the measure data on the copy quantity display.

When this simulation is executed, the grid voltage correction is automatically performed. The image density

sensor is read when -30V, 0V, and +30V are applied to the latest patch forming grid voltage.

After completion of the operation, the measure data are displayed on the copy quantity display.

Since there are two or more display items, the third digit is used to make distinction between the light reception

level and the original judgment level, and the lower two digits are used to display the data.

The display is selected by the magnification ratio key.

Copy quantity display

Display data (Image density sensor A/D input value)

3rd digit 2nd, 1st digits

A Measured

data

Drum surface data (patch forming grid voltage) –30V is applied.

b Drum surface data (patch forming grid voltage) is applied.

C Drum surface data (patch forming grid voltage) is applied.

d Patch data (patch forming grid voltage) -30V is applied.

E Patch data (patch forming grid voltage) is applied.

F Patch data (patch forming grid voltage) +30V is applied.

The data displayed by the lower two digits are A/D input values of the original sensor, and is expressed in

decimal. (Display range: 0 ∼ 99)

The patch forming grid voltage after execution of this simulation can be checked with SIM 44-9.

06 Grid voltage correction compulsory execution

The grid voltage correction is forcibly executed during the simulation.

When the operation is completed, the patch forming grid voltage after grid voltage correction is displayed on the

copy quantity display. The relationship between the display value and the patch forming grid voltage value is as

shown below.

Display value Patch forming grid voltage

8 200 V Display range: 8 ∼ 99

When the display is

changed by 1, the

voltage is changed by 5V.

50 410 V

99 655 V

The drum surface data and the patch data after execution of this simulation can be checked with SIM 44-10.

(Note) When this simulation is executed, the patch forming grid voltage is stored, and the grid voltage amount may

be changed from the patch forming grid voltage before and after execution.

07 Image density sensor, drum mark sensor operation test

Used to read the light reception level for the light emitting amount of the image density sensor and the drum mark

sensor and to display on the copy quantity display.

When this simulation is executed, the light emitting levels of the image density sensor and the drum mark sensor

are changed in 5 steps and each light reception level is read.

After completion of operation, the measured data are displayed on the copy quantity display.

Since there are two or more display items, the third digit is used to make distinction between the light reception

level and the original judgment level, and the lower two digits are used to display the data.

The display is selected by the magnification ratio key.

Copy quantity display

Display data

3rd digit 2nd, 1st digits

A Measured

data

Image density sensor input value, when light emitting 1V

b Image density sensor input value, when light emitting 2V

C Image density sensor input value, when light emitting 3V

d Image density sensor input value, when light emitting 4V

E Image density sensor input value, when light emitting 5V

F Judgement

data

Drum mark sensor level, when light emitting 1V

G Drum mark sensor level, when light emitting 2V

H Drum mark sensor level, when light emitting 3V

I Drum mark sensor level, when light emitting 4V

J Drum mark sensor level, when light emitting 5V

The data displayed with the lower two digits:

“A” ∼ “E”: Image density sensor A/D input value. Converted into a decimal number and displayed. (Display range:

0 ∼ 99)

“F” ∼ “J”: Drum mark sensor level is displayed with 0 and 1.

“0”: Drum mark sensor sensing impossible

“1”: Drum mark sensor sensing possible

8 – 10

1 2 ... 91 92 93 94 95 96 97 98 99 100 101 ... 124 125

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Sharp SF-1116 Manuale di Servizio Pagina 96

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