Re: SOT: Scanning old computer docs

2021-04-03 Thread Guy Dunphy via cctalk
At 12:19 AM 3/04/2021 -0600, you wrote: >On 4/2/21 10:27 PM, Guy Dunphy via cctalk wrote: >> There are defects in your 'good' flatbed image too - for eg the >> bleed-through of the orange lettering on the other side of the >> sheet. The way to correct that is to use a black, highly light >> abso

Re: SOT: Scanning old computer docs

2021-04-02 Thread Grant Taylor via cctalk
On 4/2/21 10:27 PM, Guy Dunphy via cctalk wrote: There are defects in your 'good' flatbed image too - for eg the bleed-through of the orange lettering on the other side of the sheet. The way to correct that is to use a black, highly light absorbent backing sheet. Eg black velvet. Hum. Why do

Re: SOT: Scanning old computer docs

2021-04-02 Thread Guy Dunphy via cctalk
Hi Kevin, Are you _sure_ the two modes use the same optical sensor? Often sheet feed systems use a different sensor somewhere along the paper path. I suspect they are not, given the odd colour pattering off the top edge of the paper, on the autofeed image. If those two images are definitely produ

Re: SOT: Scanning old computer docs

2021-04-02 Thread ED SHARPE via cctalk
how  fast is  scanner? ed#  In a message dated 4/2/2021 6:35:03 PM US Mountain Standard Time, cctalk@classiccmp.org writes:  On 04/02/2021 07:56 PM, Kevin Parker via cctalk wrote: > If there is anyone on the list familiar with scanners I'd be most grateful > for some advice please. > > Some time a

Re: SOT: Scanning old computer docs

2021-04-02 Thread Jon Elson via cctalk
On 04/02/2021 07:56 PM, Kevin Parker via cctalk wrote: If there is anyone on the list familiar with scanners I'd be most grateful for some advice please. Some time ago I bought a HP 8270 sheet feed (full duplex) scanner NOS. I wanted to digitise a whole heap of old computer documentation and for

Re: SOT: Scanning old computer docs

2021-04-02 Thread Dan MacMillan via cctalk
Hi Kevin, I have a multi-function printer scanner that has a similar problem when it needs to be cleaned. This link explains the problem and how to fix it. Maybe your issue is similar. https://help.brother-usa.com/app/answers/detail/a_id/62055/~/black-vertical-lines-when-copying-or-scanning

Re: SOT: Scanning old computer docs

2021-04-02 Thread Grant Taylor via cctalk
On 4/2/21 6:56 PM, Kevin Parker via cctalk wrote: If there is anyone on the list familiar with scanners I'd be most grateful for some advice please. I'm definitely not an expert. But I have opinions. Some time ago I bought a HP 8270 sheet feed (full duplex) scanner NOS. I wanted to digitise

SOT: Scanning old computer docs

2021-04-02 Thread Kevin Parker via cctalk
If there is anyone on the list familiar with scanners I'd be most grateful for some advice please. Some time ago I bought a HP 8270 sheet feed (full duplex) scanner NOS. I wanted to digitise a whole heap of old computer documentation and for a little while I've been working through the big heap of