Konica Minolta bizhub C658 Service Manual page 1983

bizhub C658/C558/C458/C368/C308/C258
(b) Document feed roller / Document pick-up roller
[1] Document feed roller
(c) Document separation roller
3.1.5 Document separation roller pressure switching mechanism
• As a solution to misfeed problems when they occur, the pressure of the document separation roller can be changed as necessary.
• Inserting a spacer into a space below the spring that applies pressure to the document separation roller will increase the pressure.
• The pressure may be set in two steps selectable according to the direction in which the spacer is inserted.
• The spacer is disposed beside the document separation roller.
• For details, see " I.15.1.4 Adjusting the pressure of the separation
3.2 Document registration section
3.2.1 Document registration outline
• The registration motor provides the drive for the registration roller.
• The original will create a loop between the document feed roller and the registration roller when the original is being conveyed in order to
correct the skew.
3.2.2 Document registration loop formation process
1. The registration sensor detects the leading edge of the original.
2. The registration roller remains stationary.
3. Because the document feed roller continues rotating to feed the original, a loop is formed at the leading edge of the original.
4. The loop corrects skew in the original.
5. The registration roller is started to rotate to transport the original.
[7]
[6]
[8]
[1] Original
[3] Document separation roller
[5] Loop formation
[7] Registration roll
3.3 1-sided document reading section
3.3.1 Document reading section
• The document reading motor provides the drive for document reading roller/1/2/3, and the document exit roller.
• The original transported from the document registration section will be transported to the document exit section by document reading
roller/1/2/3, and the document exit roller.
[1]
[4]
[3] [2]
[5]
PC THEORY OF OPERATION DF-704 > 3. OPERATION
[2]
[2] Document pick-up roller
roller".
[1]
[2] Document pick-up roller
[4] Document feed roller
[6] Registration sensor (PS3)
[8] Registration roller
PC-9