Magazine, the resolution of the image contributor usually have the following requirements:
TIFF: Colour or greyscale photographs (halftones): always use a minimum of 300 dpi.
TIFF: Bitmapped line drawings: use a minimum of 1000 dpi.
The first point that is a gray scale image dpi at least 300dpi or more, such as pathological picture, electrophoresis, etc.;
The second point that is the lattice resolution of the general linear graph over the 1000dpi, such as by using excel curve or histogram, chemdraw structured so painted.
Submission problems encountered:
Digital photos are usually 72 dpi
The excel the image is 200 dpi
Contributors can not satisfy demand, so to change the dpi settings
Solution:
In photoshop create a new A4 format of the image, the image size option will be required for resolution, the resolution selected magazines (such as 1000ppi, there may well relate to the concept of a ppi and dpi, in fact, you do not have much control, it simply years, the equivalent of a computer screen output (ppi), the equivalent of a printer’s output (dpi), you only set to 1000 ppi, the print resolution on to 1000dpi, the two are equivalent in value). To excel or photos directly pasted into new layer (note that this is the image display may be small), the picture to fit the size of watch, cut the desired area, if the magazine on the image size requirements can be set through the picture size options (such as 5cm * 3cm), saved as tiff format, will be kept on the hook before the layer removed, were determined using the LZW compression, OK, you can.Save this picture is about 200k.
dpi increase the benefits:
Usually, we use excel paste to word for the plan or directly saved as pictures, you will find pictures it would be more narrow early Qing Dynasty, but magnified over the fuzzy
Dpi, after the increase, although the narrow sense as a direct save picture Qing, but many times you enlarge the image remains clear after
These are the LaoLang_cool dpi comrades with the help of some experience in the revision process, sorting out for all to share.
(Transfer from dxy, prepared and provided by the gaalaa Moderator)

If the artwork is “Origin” to do a graph,
In accordance with the requirements “1200 dpi (dots per inch) for black and white line art (simple bar graphs, charts, etc.)” Asking for a revision process is as follows:
(1) made plans to use program “Origin” (such as OriginPro 7.5) open;
(2) Click on the menu “File” “Export Page ..” in the “Save as type” selected “Tag Image File (*. tif)”, while “Show Image Options” before the tick, determine the “Save”;
(3) in the TIFF Options window, “DIP” set to 1200; “Color Depth” selection Monochrome; “Compression” select LZW, finally click “OK” can be.
(4) from the TIF format image with Photoshop to open the menu “Image”, “image size” confirmed “resolution” of 1200 pixels / inch, the “width” is set to 6000 pixels or so; click on the “good . ”
(5) “document”, “Save As”, “format” selected “TIFF”, “save”; in the “image compression” selected “LZW”; click on the “good”; can get to meet the requirements of the image of the magazine!
If the picture is a JPG and other photos, such as the electron microscope photographs,
300 dpi for halftones (black and white photographs)
600 dpi for combination halftones (photographs that also contain line art such as labeling or thin lines)
Either in accordance with the above requirements, processing is as follows:
(1) pictures with Photoshop to open the menu “Image” in “image mode” select “gray” (for black and white picture) or “CMYK” (for color images)
(2) in the “image” in the “image size” set “Resolution” to 600 (or 300) pixels / inch, the “width” is set to 3000 pixels or so; click on the “good.”
(3) “File” “Save As”, “format” selected “TIFF” “save”; in the “image compression” selected “LZW”; click on the “good”; can get to meet the requirements of the image of the magazine!